Release patch relase due to bad version bumping.

Mac clock shim not needed after 10.12

.builds/.freebsd.yaml

@@ -1,11 +0,0 @@
-image: freebsd/latest
-packages:
-  - gmake
-tasks:
-  - build: |
-      cd janet
-      gmake
-      gmake test
-      sudo gmake install
-      gmake test-install
-      gmake test-amalg

.builds/.openbsd.yaml

@@ -1,11 +0,0 @@
-image: openbsd/6.5
-packages:
-  - gmake
-tasks:
-  - build: |
-      cd janet
-      gmake
-      gmake test
-      doas gmake install
-      gmake test-install
-      gmake test-amalg

.builds/freebsd.yml

@@ -0,0 +1,11 @@
+image: freebsd/12.x
+sources:
+- https://git.sr.ht/~bakpakin/janet
+packages:
+- gmake
+tasks:
+- build: |
+    cd janet
+    gmake
+    gmake test
+    sudo gmake install

.builds/linux.yml

@@ -0,0 +1,21 @@
+image: archlinux
+sources:
+- https://git.sr.ht/~bakpakin/janet
+packages:
+- meson
+tasks:
+- with-epoll: |
+    cd janet
+    meson setup with-epoll --buildtype=release
+    cd with-epoll
+    meson configure -Depoll=true
+    ninja
+    ninja test
+- no-epoll: |
+    cd janet
+    meson setup no-epoll --buildtype=release
+    cd no-epoll
+    meson configure -Depoll=false
+    ninja
+    ninja test
+    sudo ninja install

.builds/openbsd.yml

@@ -0,0 +1,32 @@
+image: openbsd/latest
+sources:
+- https://git.sr.ht/~bakpakin/janet
+packages:
+- gmake
+- meson
+tasks:
+- gmake: |
+    cd janet
+    gmake
+    gmake test
+    doas gmake install
+    gmake test-install
+- meson_min: |
+    cd janet
+    meson setup build_meson_min --buildtype=release -Dsingle_threaded=true -Dnanbox=false -Ddynamic_modules=false -Ddocstrings=false -Dnet=false -Dsourcemaps=false -Dpeg=false -Dassembler=false -Dint_types=false -Dtyped_array=false -Dreduced_os=true
+    cd build_meson_min
+    ninja
+- meson_prf: |
+    cd janet
+    meson setup build_meson_prf --buildtype=release -Dprf=true
+    cd build_meson_prf
+    ninja
+    ninja test
+- meson_default: |
+    cd janet
+    meson setup build_meson_default --buildtype=release
+    cd build_meson_default
+    ninja
+    ninja test
+    doas ninja install
+

.gitattributes

@@ -1,2 +1,10 @@
-# Use an approximate language for syntax highlighting (clojure is pretty close)
-*.janet linguist-language=clojure
+*.janet linguist-language=Clojure
+
+*.janet text eol=lf
+*.c text eol=lf
+*.h text eol=lf
+*.md text eol=lf
+*.yml text eol=lf
+*.build text eol=lf
+*.txt text eol=lf
+*.sh text eol=lf

.github/workflows/release.yml

@@ -0,0 +1,55 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - "v*.*.*"
+
+jobs:
+
+  release:
+    name: Build release binaries
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ ubuntu-latest, macos-latest ]
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@master
+      - name: Set the version
+        run: echo "version=${GITHUB_REF/refs\/tags\//}" >> $GITHUB_ENV
+      - name: Set the platform
+        run: echo "platform=$(tr '[A-Z]' '[a-z]' <<< $RUNNER_OS)" >> $GITHUB_ENV
+      - name: Compile the project
+        run: make clean && make
+      - name: Build the artifact
+        run: JANET_DIST_DIR=janet-${{ env.version }}-${{ env.platform }} make build/janet-${{ env.version }}-${{ env.platform }}-x64.tar.gz
+      - name: Draft the release
+        uses: softprops/action-gh-release@v1
+        with:
+          draft: true
+          files: |
+            build/*.gz
+            build/janet.h
+            build/c/janet.c
+            build/c/shell.c
+
+  release-windows:
+    name: Build release binaries for windows
+    runs-on: windows-latest
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@master
+      - name: Setup MSVC
+        uses: ilammy/msvc-dev-cmd@v1
+      - name: Build the project
+        shell: cmd
+        run: build_win all
+      - name: Draft the release
+        uses: softprops/action-gh-release@v1
+        with:
+          draft: true
+          files: |
+            ./dist/*.zip
+            ./*.zip
+            ./*.msi

.github/workflows/test.yml

@@ -0,0 +1,34 @@
+name: Test
+
+on: [push, pull_request]
+
+jobs:
+
+  test-posix:
+    name: Build and test on POSIX systems
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ ubuntu-latest, macos-latest ]
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@master
+      - name: Compile the project
+        run: make clean && make
+      - name: Test the project
+        run: make test
+
+  test-windows:
+    name: Build and test on Windows
+    runs-on: windows-latest
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@master
+      - name: Setup MSVC
+        uses: ilammy/msvc-dev-cmd@v1
+      - name: Build the project
+        shell: cmd
+        run: build_win
+      - name: Test the project
+        shell: cmd
+        run: build_win test

.gitignore

@@ -13,6 +13,12 @@ janet
 janet-*.tar.gz
 dist
 
+# jpm lockfile
+lockfile.janet
+
+# Kakoune (fzf via fd)
+.fdignore
+
 # VSCode
 .vscode
 
@@ -20,9 +26,17 @@ dist
 .project
 .cproject
 
+# Gnome Builder
+.buildconfig
+
 # Local directory for testing
 local
 
+# Common test files I use.
+temp.janet
+temp*.janet
+scratch.janet
+
 # Emscripten
 *.bc
 janet.js
@@ -34,6 +48,7 @@ janet.wasm
 
 # Generate test files
 *.out
+.orig
 
 # Tools
 xxd
@@ -41,6 +56,7 @@ xxd.exe
 
 # VSCode
 .vs
+.clangd
 
 # Swap files
 *.swp
@@ -52,6 +68,10 @@ tags
 vgcore.*
 *.out.*
 
+# Wix artifacts
+*.msi
+*.wixpdb
+
 # Created by https://www.gitignore.io/api/c
 
 ### C ###
@@ -122,3 +142,6 @@ compile_commands.json
 CTestTestfile.cmake
 
 # End of https://www.gitignore.io/api/cmake
+
+# Astyle
+*.orig

.travis.yml

@@ -1,26 +0,0 @@
-language: c
-script:
-- make
-- make test
-- sudo make install
-- make test-install
-- make test-amalg
-- make build/janet-${TRAVIS_TAG}-${TRAVIS_OS_NAME}.tar.gz
-compiler:
-- clang
-- gcc
-os:
-- linux
-- osx
-before_deploy: 
-deploy:
-  provider: releases
-  api_key:
-    secure: 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
-  file: build/janet-${TRAVIS_TAG}-${TRAVIS_OS_NAME}.tar.gz
-  draft: true
-  skip_cleanup: true
-  on:
-    tags: true
-    repo: janet-lang/janet
-    condition: "$CC = clang"

CHANGELOG.md

@@ -1,8 +1,607 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
-## 0.6.0 - ??
+## 1.21.1 - 2022-03-27
+- C functions `janet_dobytes` and `janet_dostring` will now enter the event loop if it is enabled.
+- Fix hashing regression - hash of negative 0 must be the same as positive 0 since they are equal.
+- The `flycheck` function no longer pollutes the module/cache
+- Fix quasiquote bug in compiler
+- Disallow use of `cancel` and `resume` on fibers scheduled or created with `ev/go`, as well as the root
+  fiber.
 
+## 1.20.0 - 2022-1-27
+- Add `:missing-symbol` hook to `compile` that will act as a catch-all macro for undefined symbols.
+- Add `:redef` dynamic binding that will allow users to redefine top-level bindings with late binding. This
+  is intended for development use.
+- Fix a bug with reading from a stream returned by `os/open` on Windows and Linux.
+- Add `:ppc64` as a detectable OS type.
+- Add `& more` support for destructuring in the match macro.
+- Add `& more` support for destructuring in all binding forms (`def`).
+
+## 1.19.2 - 2021-12-06
+- Fix bug with missing status lines in some stack traces.
+- Update hash function to have better statistical properties.
+
+## 1.19.1 - 2021-12-04
+- Add an optional `prefix` parameter to `debug/stacktrace` to allow printing prettier error messages.
+- Remove appveyor for CI pipeline
+- Fixed a bug that prevented sending threaded abstracts over threaded channels.
+- Fix bug in the `map` function with arity at least 3.
+
+## 1.19.0 - 2021-11-27
+- Add `math/log-gamma` to replace `math/gamma`, and change `math/gamma` to be the expected gamma function.
+- Fix leaking file-descriptors in os/spawn and os/execute.
+- Ctrl-C will now raise SIGINT.
+- Allow quoted literals in the `match` macro to behave as expected in patterns.
+- Fix windows net related bug for TCP servers.
+- Allow evaluating ev streams with dofile.
+- Fix `ev` related bug with operations on already closed file descriptors.
+- Add struct and table agnostic `getproto` function.
+- Add a number of functions related to structs.
+- Add prototypes to structs. Structs can now inherit from other structs, just like tables.
+- Create a struct with a prototype with `struct/with-proto`.
+- Deadlocked channels will no longer exit early - instead they will hang, which is more intuitive.
+
+## 1.18.1 - 2021-10-16
+- Fix some documentation typos
+- Fix - Set pipes passed to subprocess to blocking mode.
+- Fix `-r` switch in repl.
+
+## 1.18.0 - 2021-10-10
+- Allow `ev/cancel` to work on already scheduled fibers.
+- Fix bugs with ev/ module.
+- Add optional `base` argument to scan-number
+- Add `-i` flag to janet binary to make it easier to run image files from the command line
+- Remove `thread/` module.
+- Add `(number ...)` pattern to peg for more efficient number parsing using Janet's
+  scan-number function without immediate string creation.
+
+## 1.17.2 - 2021-09-18
+- Remove include of windows.h from janet.h. This caused issues on certain projects.
+- Fix formatting in doc-format to better handle special characters in signatures.
+- Fix some marshalling bugs.
+- Add optional Makefile target to install jpm as well.
+- Supervisor channels in threads will no longer include a wasteful copy of the fiber in every
+  message across a thread.
+- Allow passing a closure to `ev/thread` as well as a whole fiber.
+- Allow passing a closure directly to `ev/go` to spawn fibers on the event loop.
+
+## 1.17.1 - 2021-08-29
+- Fix docstring typos
+- Add `make install-jpm-git` to make jpm co-install simpler if using the Makefile.
+- Fix bugs with starting ev/threads and fiber marshaling.
+
+## 1.17.0 - 2021-08-21
+- Add the `-E` flag for one-liners with the `short-fn` syntax for argument passing.
+- Add support for threaded abstract types. Threaded abstract types can easily be shared between threads.
+- Deprecate the `thread` library. Use threaded channels and ev instead.
+- Channels can now be marshalled.
+- Add the ability to close channels with `ev/chan-close` (or `:close`).
+- Add threaded channels with `ev/thread-chan`.
+- Add `JANET_FN` and `JANET_REG` macros to more easily define C functions that export their source mapping information.
+- Add `janet_interpreter_interupt` and `janet_loop1_interrupt` to interrupt the interpreter while running.
+- Add `table/clear`
+- Add build option to disable the threading library without disabling all threads.
+- Remove JPM from the main Janet distribution. Instead, JPM must be installed
+  separately like any other package.
+- Fix issue with `ev/go` when called with an initial value and supervisor.
+- Add the C API functions `janet_vm_save` and `janet_vm_load` to allow
+saving and restoring the entire VM state.
+
+## 1.16.1 - 2021-06-09
+- Add `maclintf` - a utility for adding linting messages when inside macros.
+- Print source code of offending line on compiler warnings and errors.
+- Fix some issues with linting and re-add missing `make docs`.
+- Allow controlling linting with dynamic bindings `:lint-warn`, `:lint-error`, and `:lint-levels`.
+- Add `-w` and `-x` command line flags to the `janet` binary to set linting thresholds.
+  linting thresholds are as follows:
+    - :none - will never be trigger.
+    - :relaxed - will only trigger on `:relaxed` lints.
+    - :normal - will trigger on `:relaxed` and `:normal` lints.
+    - :strict - will trigger on `:strict`, `:normal`, and `:relaxed` lints. This will catch the most issues
+      but can be distracting.
+
+## 1.16.0 - 2021-05-30
+- Add color documentation to the `doc` macro - enable/disable with `(dyn :doc-color)`.
+- Remove simpler HTML docs from distribution - use website or built-in documentation instead.
+- Add compiler warnings and deprecation levels.
+- Add `as-macro` to make using macros within quasiquote easier to do hygienically.
+- Expose `JANET_OUT_OF_MEMORY` as part of the Janet API.
+- Add `native-deps` option to `declare-native` in `jpm`. This lets native libraries link to other
+  native libraries when building with jpm.
+- Remove the `tarray` module. The functionality of typed arrays will be moved to an external module
+  that can be installed via `jpm`.
+- Add `from-pairs` to core.
+- Add `JPM_OS_WHICH` environment variable to jpm to allow changing auto-detection behavior.
+- The flychecker will consider any top-level calls of functions that start with `define-` to
+  be safe to execute and execute them. This allows certain patterns (like spork/path) to be
+  better processed by the flychecker.
+
+## 1.15.5 - 2021-04-25
+- Add `declare-headers` to jpm.
+- Fix error using unix pipes on BSDs.
+- Support .cc and .cxx extensions in `jpm` for C++ code.
+- Change networking code to not create as many HUP errors.
+- Add `net/shutdown` to close sockets in one direction without hang ups.
+- Update code for printing the debug repl
+
+## 1.15.4 - 2021-03-16
+- Increase default nesting depth of pretty printing to `JANET_RECURSION_GUARD`
+- Update meson.build
+- Add option to automatically add shebang line in installed scripts with `jpm`.
+- Add `partition-by` and `group-by` to the core.
+- Sort keys in pretty printing output.
+
+## 1.15.3 - 2021-02-28
+- Fix a fiber bug that occured in deeply nested fibers
+- Add `unref` combinator to pegs.
+- Small docstring changes.
+
+## 1.15.2 - 2021-02-15
+- Fix bug in windows version of `os/spawn` and `os/execute` with setting environment variables.
+- Fix documentation typos.
+- Fix peg integer reading combinators when used with capture tags.
+
+## 1.15.0 - 2021-02-08
+- Fix `gtim` and `ltim` bytecode instructions on non-integer values.
+- Clean up output of flychecking to be the same as the repl.
+- Change behavior of `debug/stacktrace` with a nil error value.
+- Add optional argument to `parser/produce`.
+- Add `no-core` option to creating standalone binaries to make execution faster.
+- Fix bug where a buffer overflow could be confused with an out of memory error.
+- Change error output to `file:line:column: message`. Column is in bytes - tabs
+  are considered to have width 1 (instead of 8).
+
+## 1.14.2 - 2021-01-23
+- Allow `JANET_PROFILE` env variable to load a profile before loading the repl.
+- Update `tracev` macro to allow `def` and `var` inside to work as expected.
+- Use `(dyn :peg-grammar)` for passing a default grammar to `peg/compile` instead of loading
+  `default-peg-grammar` directly from the root environment.
+- Add `ev/thread` for combining threading with the event loop.
+- Add `ev/do-thread` to make `ev/thread` easier to use.
+- Automatically set supervisor channel in `net/accept-loop` and `net/server` correctly.
+
+## 1.14.1 - 2021-01-18
+- Add `doc-of` for reverse documentation lookup.
+- Add `ev/give-supervsior` to send a message to the supervising channel.
+- Add `ev/gather` and `chan` argument to `ev/go`. This new argument allows "supervisor channels"
+  for fibers to enable structured concurrency.
+- Make `-k` flag work on stdin if no files are given.
+- Add `flycheck` function to core.
+- Make `backmatch` and `backref` more expressive in pegs.
+- Fix buggy `string/split`.
+- Add `fiber/last-value` to get the value that was last yielded, errored, or signaled
+  by a fiber.
+- Remove `:generate` verb from `loop` macros. Instead, use the `:in` verb
+  which will now work on fibers as well as other data structures.
+- Define `next`, `get`, and `in` for fibers. This lets
+  `each`, `map`, and similar iteration macros can now iterate over fibers.
+- Remove macro `eachy`, which can be replaced by `each`.
+- Add `dflt` argument to find-index.
+- Deprecate `file/popen` in favor of `os/spawn`.
+- Add `:all` keyword to `ev/read` and `net/read` to make them more like `file/read`. However, we
+  do not provide any `:line` option as that requires buffering.
+- Change repl behavior to make Ctrl-C raise SIGINT on posix. The old behavior for Ctrl-C,
+  to clear the current line buffer, has been moved to Ctrl-Q.
+- Importing modules that start with `/` is now the only way to import from project root.
+  Before, this would import from / on disk. Previous imports that did not start with `.` or `/`
+  are now unambiguously importing from the syspath, instead of checking both the syspath and
+  the project root. This is backwards incompatible and dependencies should be updated for this.
+- Change hash function for numbers.
+- Improve error handling of `dofile`.
+- Bug fixes in networking and subprocess code.
+- Use markdown formatting in more places for docstrings.
+
+## 1.13.1 - 2020-12-13
+- Pretty printing a table with a prototype will look for `:_name` instead of `:name`
+  in the prototype table to tag the output.
+- `match` macro implementation changed to be tail recursive.
+- Adds a :preload loader which allows one to manually put things into `module/cache`.
+- Add `buffer/push` function.
+- Backtick delimited strings and buffers are now reindented based on the column of the
+  opening delimiter. Whitespace in columns to the left of the starting column is ignored unless
+  there are non-space/non-newline characters in that region, in which case the old behavior is preserved.
+- Argument to `(error)` combinator in PEGs is now optional.
+- Add `(line)` and `(column)` combinators to PEGs to capture source line and column.
+  This should make error reporting a bit easier.
+- Add `merge-module` to core.
+- During installation and release, merge janetconf.h into janet.h for easier install.
+- Add `upscope` special form.
+- `os/execute` and `os/spawn` can take streams for redirecting IO.
+- Add `:parser` and `:read` parameters to `run-context`.
+- Add `os/open` if ev is enabled.
+- Add `os/pipe` if ev is enabled.
+- Add `janet_thread_current(void)` to C API
+- Add integer parsing forms to pegs. This makes parsing many binary protocols easier.
+- Lots of updates to networking code - now can use epoll (or poll) on linux and IOCP on windows.
+- Add `ev/` module. This exposes a fiber scheduler, queues, timeouts, and other functionality to users
+  for single threaded cooperative scheduling and asynchronous IO.
+- Add `net/accept-loop` and `net/listen`. These functions break down `net/server` into it's essential parts
+  and are more flexible. They also allow further improvements to these utility functions.
+- Various small bug fixes.
+
+## 1.12.2 - 2020-09-20
+- Add janet\_try and janet\_restore to C API.
+- Fix `os/execute` regression on windows.
+- Add :pipe option to `os/spawn`.
+- Fix docstring typos.
+
+## 1.12.1 - 2020-09-07
+- Make `zero?`, `one?`, `pos?`, and `neg?` polymorphic.
+- Add C++ support to jpm and improve C++ interop in janet.h.
+- Add `%t` formatter to `printf`, `string/format`, and other formatter functions.
+- Expose `janet_cfuns_prefix` in C API.
+- Add `os/proc-wait` and `os/proc-kill` for interacting with processes.
+- Add `janet_getjfile` to C API.
+- Allow redirection of stdin, stdout, and stderr by passing keywords in the env table in `os/spawn` and `os/execute`.
+- Add `os/spawn` to get a core/process back instead of an exit code as in `os/execute`.
+  When called like this, `os/execute` returns immediately.
+- Add `:x` flag to os/execute to raise error when exit code is non-zero.
+- Don't run `main` when flychecking.
+- Add `:n` flag to `file/open` to raise an error if file cannot be opened.
+- Fix import macro to not try and coerce everything to a string.
+- Allow passing a second argument to `disasm`.
+- Add `cancel`. Resumes a fiber but makes it immediately error at the yield point.
+- Allow multi-line paste into built in repl.
+- Add `(curenv)`.
+- Change `net/read`, `net/chunk`, and `net/write` to raise errors in the case of failures.
+- Add `janet_continue_signal` to C API. This indirectly enables C functions that yield to the event loop
+  to raise errors or other signals.
+- Update meson build script to fix bug on Debian's version of meson
+- Add `xprint`, `xprin`, `xprintf`, and `xprinf`.
+- `net/write` now raises an error message if write fails.
+- Fix issue with SIGPIPE on macOS and BSDs.
+
+## 1.11.3 - 2020-08-03
+- Add `JANET_HASHSEED` environment variable when `JANET_PRF` is enabled.
+- Expose `janet_cryptorand` in C API.
+- Properly initialize PRF in default janet program
+- Add `index-of` to core library.
+- Add `-fPIC` back to core CFLAGS (non-optional when compiling default client with Makefile)
+- Fix defaults on Windows for ARM
+- Fix defaults on NetBSD.
+
+## 1.11.1 - 2020-07-25
+- Fix jpm and git with multiple git installs on Windows
+- Fix importing a .so file in the current directory
+- Allow passing byte sequence types directly to typed-array constructors.
+- Fix bug sending files between threads.
+- Disable PRF by default.
+- Update the soname.
+
+## 1.11.0 - 2020-07-18
+- Add `forever` macro.
+- Add `any?` predicate to core.
+- Add `jpm list-pkgs` subcommand to see which package aliases are in the listing.
+- Add `jpm list-installed` subcommand to see which packages are installed.
+- Add `math/int-min`, `math/int-max`, `math/int32-min`, and `math/int32-max` for getting integer limits.
+- The gc interval is now autotuned, to prevent very bad gc behavior.
+- Improvements to the bytecode compiler, Janet will now generate more efficient bytecode.
+- Add `peg/find`, `peg/find-all`, `peg/replace`, and `peg/replace-all`
+- Add `math/nan`
+- Add `forv` macro
+- Add `symbol/slice`
+- Add `keyword/slice`
+- Allow cross compilation with Makefile.
+- Change `compare-primitve` to `cmp` and make it more efficient.
+- Add `reverse!` for reversing an array or buffer in place.
+- `janet_dobytes` and `janet_dostring` return parse errors in \*out
+- Add `repeat` macro for iterating something n times.
+- Add `eachy` (each yield) macro for iterating a fiber.
+- Fix `:generate` verb in loop macro to accept non symbols as bindings.
+- Add `:h`, `:h+`, and `:h*` in `default-peg-grammar` for hexidecimal digits.
+- Fix `%j` formatter to print numbers precisely (using the `%.17g` format string to printf).
+
+## 1.10.1 - 2020-06-18
+- Expose `janet_table_clear` in API.
+- Respect `JANET_NO_PROCESSES` define when building
+- Fix `jpm` rules having multiple copies of the same dependency.
+- Fix `jpm` install in some cases.
+- Add `array/trim` and `buffer/trim` to shrink the backing capacity of these types
+  to their current length.
+
+## 1.10.0 - 2020-06-14
+- Hardcode default jpm paths on install so env variables are needed in fewer cases.
+- Add `:no-compile` to `create-executable` option for jpm.
+- Fix bug with the `trace` function.
+- Add `:h`, `:a`, and `:c` flags to `thread/new` for creating new kinds of threads.
+  By default, threads will now consume much less memory per thread, but sending data between
+  threads may cost more.
+- Fix flychecking when using the `use` macro.
+- CTRL-C no longer exits the repl, and instead cancels the current form.
+- Various small bug fixes
+- New MSI installer instead of NSIS based installer.
+- Make `os/realpath` work on windows.
+- Add polymorphic `compare` functions for comparing numbers.
+- Add `to` and `thru` peg combinators.
+- Add `JANET_GIT` environment variable to jpm to use a specific git binary (useful mainly on windows).
+- `asm` and `disasm` functions now use keywords instead of macros for keys. Also
+  some slight changes to the way constants are encoded (remove wrapping `quote` in some cases).
+- Expose current macro form inside macros as (dyn :macro-form)
+- Add `tracev` macro.
+- Fix compiler bug that emitted incorrect code in some cases for while loops that create closures.
+- Add `:fresh` option to `(import ...)` to overwrite the module cache.
+- `(range x y 0)` will return an empty array instead of hanging forever.
+- Rename `jpm repl` to `jpm debug-repl`.
+
+## 1.9.1 - 2020-05-12
+- Add :prefix option to declare-source
+- Re-enable minimal builds with the debugger.
+- Add several flags for configuring Janet on different platforms.
+- Fix broken meson build from 1.9.0 and add meson to CI.
+- Fix compilation issue when nanboxing is disabled.
+
+## 1.9.0 - 2020-05-10
+- Add `:ldflags` option to many jpm declare functions.
+- Add `errorf` to core.
+- Add `lenprefix` combinator to PEGs.
+- Add `%M`, `%m`, `%N`, and `%n` formatters to formatting functions. These are the
+  same as `%Q`, `%q`, `%P`, and `%p`, but will not truncate long values.
+- Add `fiber/root`.
+- Add beta `net/` module to core for socket based networking.
+- Add the `parse` function to parse strings of source code more conveniently.
+- Add `jpm rule-tree` subcommand.
+- Add `--offline` flag to jpm to force use of the cache.
+- Allow sending pointers and C functions across threads via `thread/send`.
+- Fix bug in `getline`.
+- Add `sh-rule` and `sh-phony` to jpm's dialect of Janet.
+- Change C api's `janet_formatb` -> `janet_formatbv`, and add new function `janet_formatb` to C api.
+- Add `edefer` macro to core.
+- A struct/table literal/constructor with duplicate keys will use the last value given.
+  Previously, this was inconsistent between tables and structs, literals and constructor functions.
+- Add debugger to core. The debugger functions are only available
+  in a debug repl, and are prefixed by a `.`.
+- Add `sort-by` and `sorted-by` to core.
+- Support UTF-8 escapes in strings via `\uXXXX` or `\UXXXXXX`.
+- Add `math/erf`
+- Add `math/erfc`
+- Add `math/log1p`
+- Add `math/next`
+- Add os/umask
+- Add os/perm-int
+- Add os/perm-string
+- Add :int-permissions option for os/stat.
+- Add `jpm repl` subcommand, as well as `post-deps` macro in project.janet files.
+- Various bug fixes.
+
+## 1.8.1 - 2020-03-31
+- Fix bugs for big endian systems
+- Fix 1.8.0 regression on BSDs
+
+## 1.8.0 - 2020-03-29
+- Add `reduce2`, `accumulate`, and `accumulate2`.
+- Add lockfiles to `jpm` via `jpm make-lockfile` and `jpm load-lockfile`.
+- Add `os/realpath` (Not supported on windows).
+- Add `os/chmod`.
+- Add `chr` macro.
+- Allow `_` in the `match` macro to match anything without creating a binding
+  or doing unification. Also change behavior of matching nil.
+- Add `:range-to` and `:down-to` verbs in the `loop` macro.
+- Fix `and` and `or` macros returning nil instead of false in some cases.
+- Allow matching successfully against nil values in the `match` macro.
+- Improve `janet_formatc` and `janet_panicf` formatters to be more like `string/format`.
+  This makes it easier to make nice error messages from C.
+- Add `signal`
+- Add `fiber/can-resume?`
+- Allow fiber functions to accept arguments that are passed in via `resume`.
+- Make flychecking slightly less strict but more useful
+- Correct arity for `next`
+- Correct arity for `marshal`
+- Add `flush` and `eflush`
+- Add `prompt` and `return` on top of signal for user friendly delimited continuations.
+- Fix bug in buffer/blit when using the offset-src argument.
+- Fix segfault with malformed pegs.
+
+## 1.7.0 - 2020-02-01
+- Remove `file/fileno` and `file/fdopen`.
+- Remove `==`, `not==`, `order<`, `order>`, `order<=`, and `order>=`. Instead, use the normal
+  comparison and equality functions.
+- Let abstract types define a hash function and comparison/equality semantics. This lets
+  abstract types much better represent value types. This adds more fields to abstract types, which
+  will generate warnings when compiled against other versions.
+- Remove Emscripten build. Instead, use the amalgamated source code with a custom toolchain.
+- Update documentation.
+- Add `var-`
+- Add `module/add-paths`
+- Add `file/temp`
+- Add `mod` function to core.
+- Small bug fixes
+- Allow signaling from C functions (yielding) via janet\_signalv. This
+  makes it easy to write C functions that work with event loops, such as
+  in libuv or embedded in a game.
+- Add '%j' formatting option to the format family of functions.
+- Add `defer`
+- Add `assert`
+- Add `when-with`
+- Add `if-with`
+- Add completion to the default repl based on currently defined bindings. Also generally improve
+  the repl keybindings.
+- Add `eachk`
+- Add `eachp`
+- Improve functionality of the `next` function. `next` now works on many different
+  types, not just tables and structs. This allows for more generic data processing.
+- Fix thread module issue where sometimes decoding a message failed.
+- Fix segfault regression when macros are called with bad arity.
+
+## 1.6.0 - 2019-12-22
+- Add `thread/` module to the core.
+- Allow seeding RNGs with any sequence of bytes. This provides
+  a wider key space for the RNG. Exposed in C as `janet_rng_longseed`.
+- Fix issue in `resume` and similar functions that could cause breakpoints to be skipped.
+- Add a number of new math functions.
+- Improve debugger experience and capabilities. See examples/debugger.janet
+  for what an interactive debugger could look like.
+- Add `debug/step` (janet\_step in the C API) for single stepping Janet bytecode.
+- The built in repl now can enter the debugger on any signal (errors, yields,
+  user signals, and debug signals). To enable this, type (setdyn :debug true)
+  in the repl environment.
+- When exiting the debugger, the fiber being debugged is resumed with the exit value
+  of the debug session (the value returned by `(quit return-value)`, or nil if user typed Ctrl-D).
+- `(quit)` can take an optional argument that is the return value. If a module
+  contains `(quit some-value)`, the value of that module returned to `(require "somemod")`
+  is the return value. This lets module writers completely customize a module without writing
+  a loader.
+- Add nested quasiquotation.
+- Add `os/cryptorand`
+- Add `prinf` and `eprinf` to be have like `printf` and `eprintf`. The latter two functions
+  now including a trailing newline, like the other print functions.
+- Add nan?
+- Add `janet_in` to C API.
+- Add `truthy?`
+- Add `os/environ`
+- Add `buffer/fill` and `array/fill`
+- Add `array/new-filled`
+- Use `(doc)` with no arguments to see available bindings and dynamic bindings.
+- `jpm` will use `CC` and `AR` environment variables when compiling programs.
+- Add `comptime` macro for compile time evaluation.
+- Run `main` functions in scripts if they exist, just like jpm standalone binaries.
+- Add `protect` macro.
+- Add `root-env` to get the root environment table.
+- Change marshalling protocol with regard to abstract types.
+- Add `show-paths` to `jpm`.
+- Add several default patterns, like `:d` and `:s+`, to PEGs.
+- Update `jpm` path settings to make using `jpm` easier on non-global module trees.
+- Numerous small bug fixes and usability improvements.
+
+### 1.5.1 - 2019-11-16
+- Fix bug when printing buffer to self in some edge cases.
+- Fix bug with `jpm` on windows.
+- Fix `update` return value.
+
+## 1.5.0 - 2019-11-10
+- `os/date` now defaults to UTC.
+- Add `--test` flag to jpm to test libraries on installation.
+- Add `math/rng`, `math/rng-int`, and `math/rng-uniform`.
+- Add `in` function to index in a stricter manner. Conversely, `get` will
+  now not throw errors on bad keys.
+- Indexed types and byte sequences will now error when indexed out of range or
+  with bad keys.
+- Add rng functions to Janet. This also replaces the RNG behind `math/random`
+  and `math/seedrandom` with a consistent, platform independent RNG.
+- Add `with-vars` macro.
+- Add the `quickbin` command to jpm.
+- Create shell.c when making the amalgamated source. This can be compiled with
+  janet.c to make the janet interpreter.
+- Add `cli-main` function to the core, which invokes Janet's CLI interface.
+  This basically moves what was init.janet into boot.janet.
+- Improve flychecking, and fix flychecking bugs introduced in 1.4.0.
+- Add `prin`, `eprint`, `eprintf` and `eprin` functions. The
+  functions prefix with e print to `(dyn :err stderr)`
+- Print family of functions can now also print to buffers
+  (before, they could only print to files.) Output can also
+  be completely disabled with `(setdyn :out false)`.
+- `printf` is now a c function for optimizations in the case
+  of printing to buffers.
+
+## 1.4.0 - 2019-10-14
+- Add `quit` function to exit from a repl, but not always exit the entire
+  application.
+- Add `update-pkgs` to jpm.
+- Integrate jpm with https://github.com/janet-lang/pkgs.git. jpm can now
+  install packages based on their short names in the package listing, which
+  can be customized via an env variable.
+- Add `varfn` macro
+- Add compile time arity checking when function in function call is known.
+- Added `slice` to the core library.
+- The `*/slice` family of functions now can take nil as start or end to get
+  the same behavior as the defaults (0 and -1) for those parameters.
+- `string/` functions that take a pattern to search for will throw an error
+  when receiving the empty string.
+- Replace (start:end) style stacktrace source position information with
+  line, column. This should be more readable for humans. Also, range information
+  can be recovered by re-parsing source.
+
+## 1.3.1 - 2019-09-21
+- Fix some linking issues when creating executables with native dependencies.
+- jpm now runs each test script in a new interpreter.
+- Fix an issue that prevent some valid programs from compiling.
+- Add `mean` to core.
+- Abstract types that implement the `:+`, `:-`, `:*`, `:/`, `:>`, `:==`, `:<`,
+  `:<=`, and `:>=` methods will work with the corresponding built-in
+  arithmetic functions. This means built-in integer types can now be used as
+  normal number values in many contexts.
+- Allow (length x) on typed arrays an other abstract types that implement
+  the :length method.
+
+## 1.3.0 - 2019-09-05
+- Add `get-in`, `put-in`, `update-in`, and `freeze` to core.
+- Add `jpm run rule` and `jpm rules` to jpm to improve utility and discoverability of jpm.
+- Remove `cook` module and move `path` module to https://github.com/janet-lang/path.git.
+  The functionality in `cook` is now bundled directly in the `jpm` script.
+- Add `buffer/format` and `string/format` format flags `Q` and `q` to print colored and
+  non-colored single-line values, similar to `P` and `p`.
+- Change default repl to print long sequences on one line and color stacktraces if color is enabled.
+- Add `backmatch` pattern for PEGs.
+- jpm detects if not in a Developer Command prompt on windows for a better error message.
+- jpm install git submodules in dependencies
+- Change default fiber stack limit to the maximum value of a 32 bit signed integer.
+- Some bug fixes with `jpm`
+- Fix bugs with pegs.
+- Add `os/arch` to get ISA that janet was compiled for
+- Add color to stacktraces via `(dyn :err-color)`
+
+## 1.2.0 - 2019-08-08
+- Add `take` and `drop` functions that are easier to use compared to the
+  existing slice functions.
+- Add optional default value to `get`.
+- Add function literal short-hand via `|` reader macro, which maps to the
+  `short-fn` macro.
+- Add `int?` and `nat?` functions to the core.
+- Add `(dyn :executable)` at top level to get what used to be
+  `(process/args 0)`.
+- Add `:linux` to platforms returned by `(os/which)`.
+- Update jpm to build standalone executables. Use `declare-executable` for this.
+- Add `use` macro.
+- Remove `process/args` in favor of `(dyn :args)`.
+- Fix bug with Nanbox implementation allowing users to created
+  custom values of any type with typed array and marshal modules, which
+  was unsafe.
+- Add `janet_wrap_number_safe` to API, for converting numbers to Janets
+  where the number could be any 64 bit, user provided bit pattern. Certain
+  NaN values (which a machine will never generate as a result of a floating
+  point operation) are guarded against and converted to a default NaN value.
+
+## 1.1.0 - 2019-07-08
+- Change semantics of `-l` flag to be import rather than dofile.
+- Fix compiler regression in top level defs with destructuring.
+- Add `table/clone`.
+- Improve `jpm` tool with git and dependency capabilities, as well as better
+  module uninstalls.
+
+## 1.0.0 - 2019-07-01
+- Add `with` macro for resource handling.
+- Add `propagate` function so we can "rethrow" signals after they are
+  intercepted. This makes signals even more flexible.
+- Add `JANET_NO_DOCSTRINGS` and `JANET_NO_SOURCEMAPS` defines in janetconf.h
+  for shrinking binary size.
+  This seems to save about 50kB in most builds, so it's not usually worth it.
+- Update module system to allow relative imports. The `:cur:` pattern
+  in `module/expand-path` will expand to the directory part of the current file, or
+  whatever the value of `(dyn :current-file)` is. The `:dir:` pattern gets
+  the directory part of the input path name.
+- Remove `:native:` pattern in `module/paths`.
+- Add `module/expand-path`
+- Remove `module/*syspath*` and `module/*headerpath*` in favor of dynamic
+  bindings `:syspath` and `:headerpath`.
+- Compiled PEGs can now be marshaled and unmarshaled.
+- Change signature to `parser/state`
+- Add `:until` verb to loop.
+- Add `:p` flag to `fiber/new`.
+- Add `file/{fdopen,fileno}` functions.
+- Add `parser/clone` function.
+- Add optional argument to `parser/where` to set parser byte index.
+- Add optional `env` argument to `all-bindings` and `all-dynamics`.
+- Add scratch memory C API functions for auto-released memory on next gc.
+  Scratch memory differs from normal GCed memory as it can also be freed normally
+  for better performance.
+- Add API compatibility checking for modules. This will let native modules not load
+  when the host program is not of a compatible version or configuration.
+- Change signature of `os/execute` to be much more flexible.
+
+## 0.6.0 - 2019-05-29
+- `file/close` returns exit code when closing file opened with `file/popen`.
+- Add `os/rename`
+- Update windows installer to include tools like `jpm`.
 - Add `jpm` tool for building and managing projects.
 - Change interface to `cook` tool.
 - Add optional filters to `module/paths` to further refine import methods.
@@ -81,7 +680,7 @@ All notable changes to this project will be documented in this file.
 - Disallow NaNs as table or struct keys
 - Update module resolution paths and format
 
-## 0.3.0 - 2019-26-01
+## 0.3.0 - 2019-01-26
 - Add amalgamated build to janet for easier embedding.
 - Add os/date function
 - Add slurp and spit to core library.

CONTRIBUTING.md

@@ -14,7 +14,6 @@ Please read this document before making contributions.
   on how to reproduce it. If it is a compiler or language bug, please try to include a minimal
   example. This means don't post all 200 lines of code from your project, but spend some time
   distilling the problem to just the relevant code.
-* Add the `bug` tag to the issue.
 
 ## Contributing Changes
 
@@ -30,13 +29,13 @@ may require changes before being merged.
   the test folder and make sure it is run when`make test` is invoked.
 * Be consistent with the style. For C this means follow the indentation and style in
   other files (files have MIT license at top, 4 spaces indentation, no trailing
-          whitespace, cuddled brackets, etc.) Use `make format` to
-  automatically format your C code with
+  whitespace, cuddled brackets, etc.) Use `make format` to automatically format your C code with
   [astyle](http://astyle.sourceforge.net/astyle.html). You will probably need
   to install this, but it can be installed with most package managers.
 
-  For janet code, the use lisp indentation with 2 spaces. One can use janet.vim to
-  do this indentation, or approximate as close as possible.
+  For janet code, use lisp indentation with 2 spaces. One can use janet.vim to
+  do this indentation, or approximate as close as possible. There is a janet formatter
+  in [spork](https://github.com/janet-lang/spork.git) that can be used to format code as well.
 
 ## C style
 
@@ -74,4 +73,3 @@ timely manner. In short, if you want extra functionality now, then build it.
 
 * Include a good description of the problem that is being solved
 * Include descriptions of potential solutions if you have some in mind.
-* Add the appropriate tags to the issue. For new features, add the `enhancement` tag.

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2019 Calvin Rose and contributors
+Copyright (c) 2021 Calvin Rose and contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in

Makefile

@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Calvin Rose
+# Copyright (c) 2021 Calvin Rose
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to
@@ -24,45 +24,68 @@
 
 PREFIX?=/usr/local
 
-INCLUDEDIR=$(PREFIX)/include
-BINDIR=$(PREFIX)/bin
-LIBDIR=$(PREFIX)/lib
-JANET_BUILD?="\"$(shell git log --pretty=format:'%h' -n 1)\""
-CLIBS=-lm
+INCLUDEDIR?=$(PREFIX)/include
+BINDIR?=$(PREFIX)/bin
+LIBDIR?=$(PREFIX)/lib
+JANET_BUILD?="\"$(shell git log --pretty=format:'%h' -n 1 2> /dev/null || echo local)\""
+CLIBS=-lm -lpthread
 JANET_TARGET=build/janet
 JANET_LIBRARY=build/libjanet.so
 JANET_STATIC_LIBRARY=build/libjanet.a
-JANET_PATH?=$(PREFIX)/lib/janet
-MANPATH?=$(PREFIX)/share/man/man1/
-PKG_CONFIG_PATH?=$(PREFIX)/lib/pkgconfig
+JANET_PATH?=$(LIBDIR)/janet
+JANET_MANPATH?=$(PREFIX)/share/man/man1/
+JANET_PKG_CONFIG_PATH?=$(LIBDIR)/pkgconfig
+JANET_DIST_DIR?=janet-dist
+JPM_TAG?=master
 DEBUGGER=gdb
+SONAME_SETTER=-Wl,-soname,
 
-CFLAGS=-std=c99 -Wall -Wextra -Isrc/include -fpic -O2 -fvisibility=hidden \
-	   -DJANET_BUILD=$(JANET_BUILD)
-LDFLAGS=-rdynamic
+# For cross compilation
+HOSTCC?=$(CC)
+HOSTAR?=$(AR)
+CFLAGS?=-O2
+LDFLAGS?=-rdynamic
+
+COMMON_CFLAGS:=-std=c99 -Wall -Wextra -Isrc/include -Isrc/conf -fvisibility=hidden -fPIC
+BOOT_CFLAGS:=-DJANET_BOOTSTRAP -DJANET_BUILD=$(JANET_BUILD) -O0 -g $(COMMON_CFLAGS)
+BUILD_CFLAGS:=$(CFLAGS) $(COMMON_CFLAGS)
+
+# For installation
+LDCONFIG:=ldconfig "$(LIBDIR)"
 
 # Check OS
 UNAME:=$(shell uname -s)
 ifeq ($(UNAME), Darwin)
 	CLIBS:=$(CLIBS) -ldl
+	SONAME_SETTER:=-Wl,-install_name,
+	LDCONFIG:=true
 else ifeq ($(UNAME), Linux)
 	CLIBS:=$(CLIBS) -lrt -ldl
 endif
+
 # For other unix likes, add flags here!
-ifeq ($(UNAME),Haiku)
+ifeq ($(UNAME), Haiku)
+	LDCONFIG:=true
 	LDFLAGS=-Wl,--export-dynamic
 endif
+# For Android (termux)
+ifeq ($(UNAME), Linux) # uname on Darwin doesn't recognise -o
+ifeq ($(shell uname -o), Android)
+	CLIBS:=$(CLIBS) -landroid-spawn
+endif
+endif
 
-$(shell mkdir -p build/core build/mainclient build/webclient build/boot)
-all: $(JANET_TARGET) $(JANET_LIBRARY) $(JANET_STATIC_LIBRARY)
+$(shell mkdir -p build/core build/c build/boot)
+all: $(JANET_TARGET) $(JANET_LIBRARY) $(JANET_STATIC_LIBRARY) build/janet.h
 
 ######################
 ##### Name Files #####
 ######################
 
-JANET_HEADERS=src/include/janet.h src/include/janetconf.h
+JANET_HEADERS=src/include/janet.h src/conf/janetconf.h
 
-JANET_LOCAL_HEADERS=src/core/util.h \
+JANET_LOCAL_HEADERS=src/core/features.h \
+					src/core/util.h \
 					src/core/state.h \
 					src/core/gc.h \
 					src/core/vector.h \
@@ -83,12 +106,14 @@ JANET_CORE_SOURCES=src/core/abstract.c \
 				   src/core/corelib.c \
 				   src/core/debug.c \
 				   src/core/emit.c \
+				   src/core/ev.c \
 				   src/core/fiber.c \
 				   src/core/gc.c \
 				   src/core/inttypes.c \
 				   src/core/io.c \
 				   src/core/marsh.c \
 				   src/core/math.c \
+				   src/core/net.c \
 				   src/core/os.c \
 				   src/core/parse.c \
 				   src/core/peg.c \
@@ -96,13 +121,13 @@ JANET_CORE_SOURCES=src/core/abstract.c \
 				   src/core/regalloc.c \
 				   src/core/run.c \
 				   src/core/specials.c \
+				   src/core/state.c \
 				   src/core/string.c \
 				   src/core/strtod.c \
 				   src/core/struct.c \
 				   src/core/symcache.c \
 				   src/core/table.c \
 				   src/core/tuple.c \
-				   src/core/typedarray.c \
 				   src/core/util.c \
 				   src/core/value.c \
 				   src/core/vector.c \
@@ -115,114 +140,63 @@ JANET_BOOT_SOURCES=src/boot/array_test.c \
 				   src/boot/number_test.c \
 				   src/boot/system_test.c \
 				   src/boot/table_test.c
+JANET_BOOT_HEADERS=src/boot/tests.h
 
-JANET_MAINCLIENT_SOURCES=src/mainclient/line.c src/mainclient/main.c
+##########################################################
+##### The bootstrap interpreter that creates janet.c #####
+##########################################################
 
-JANET_WEBCLIENT_SOURCES=src/webclient/main.c
+JANET_BOOT_OBJECTS=$(patsubst src/%.c,build/%.boot.o,$(JANET_CORE_SOURCES) $(JANET_BOOT_SOURCES))
 
-##################################################################
-##### The bootstrap interpreter that compiles the core image #####
-##################################################################
+$(JANET_BOOT_OBJECTS): $(JANET_BOOT_HEADERS)
 
-JANET_BOOT_OBJECTS=$(patsubst src/%.c,build/%.boot.o,$(JANET_CORE_SOURCES) $(JANET_BOOT_SOURCES)) \
-	build/boot.gen.o
-
-build/%.boot.o: src/%.c $(JANET_HEADERS) $(JANET_LOCAL_HEADERS)
-	$(CC) $(CFLAGS) -DJANET_BOOTSTRAP -o $@ -c $<
+build/%.boot.o: src/%.c $(JANET_HEADERS) $(JANET_LOCAL_HEADERS) Makefile
+	$(CC) $(BOOT_CFLAGS) -o $@ -c $<
 
 build/janet_boot: $(JANET_BOOT_OBJECTS)
-	$(CC) $(CFLAGS) -DJANET_BOOTSTRAP -o $@ $^ $(CLIBS)
+	$(CC) $(BOOT_CFLAGS) -o $@ $(JANET_BOOT_OBJECTS) $(CLIBS)
 
 # Now the reason we bootstrap in the first place
-build/core_image.c: build/janet_boot
-	build/janet_boot $@ JANET_PATH $(JANET_PATH) JANET_HEADERPATH $(INCLUDEDIR)/janet
-
-##########################################################
-##### The main interpreter program and shared object #####
-##########################################################
-
-JANET_CORE_OBJECTS=$(patsubst src/%.c,build/%.o,$(JANET_CORE_SOURCES)) build/core_image.o
-JANET_MAINCLIENT_OBJECTS=$(patsubst src/%.c,build/%.o,$(JANET_MAINCLIENT_SOURCES)) build/init.gen.o
-
-# Compile the core image generated by the bootstrap build
-build/core_image.o: build/core_image.c $(JANET_HEADERS) $(JANET_LOCAL_HEADERS)
-	$(CC) $(CFLAGS) -o $@ -c $<
-
-build/%.o: src/%.c $(JANET_HEADERS) $(JANET_LOCAL_HEADERS)
-	$(CC) $(CFLAGS) -o $@ -c $<
-
-$(JANET_TARGET): $(JANET_CORE_OBJECTS) $(JANET_MAINCLIENT_OBJECTS)
-	$(CC) $(LDFLAGS) $(CFLAGS) -o $@ $^ $(CLIBS)
-
-$(JANET_LIBRARY): $(JANET_CORE_OBJECTS)
-	$(CC) $(LDFLAGS) $(CFLAGS) -shared -o $@ $^ $(CLIBS)
-
-$(JANET_STATIC_LIBRARY): $(JANET_CORE_OBJECTS)
-	$(AR) rcs $@ $^
-
-######################
-##### Emscripten #####
-######################
-
-EMCC=emcc
-EMCFLAGS=-std=c99 -Wall -Wextra -Isrc/include -O2 \
-		  -s EXTRA_EXPORTED_RUNTIME_METHODS='["cwrap"]' \
-		  -s ALLOW_MEMORY_GROWTH=1 \
-		  -s AGGRESSIVE_VARIABLE_ELIMINATION=1 \
-		  -DJANET_BUILD=$(JANET_BUILD)
-JANET_EMTARGET=build/janet.js
-JANET_WEB_SOURCES=$(JANET_CORE_SOURCES) $(JANET_WEBCLIENT_SOURCES)
-JANET_EMOBJECTS=$(patsubst src/%.c,build/%.bc,$(JANET_WEB_SOURCES)) \
-				build/webinit.gen.bc build/core_image.bc
-
-%.gen.bc: %.gen.c
-	$(EMCC) $(EMCFLAGS) -o $@ -c $<
-
-build/core_image.bc: build/core_image.c $(JANET_HEADERS) $(JANET_LOCAL_HEADERS)
-	$(EMCC) $(EMCFLAGS) -o $@ -c $<
-
-build/%.bc: src/%.c $(JANET_HEADERS) $(JANET_LOCAL_HEADERS)
-	$(EMCC) $(EMCFLAGS) -o $@ -c $<
-
-$(JANET_EMTARGET): $(JANET_EMOBJECTS)
-	$(EMCC) $(EMCFLAGS) -shared -o $@ $^
-
-emscripten: $(JANET_EMTARGET)
-
-#############################
-##### Generated C files #####
-#############################
-
-%.gen.o: %.gen.c
-	$(CC) $(CFLAGS) -o $@ -c $<
-
-build/xxd: tools/xxd.c
-	$(CC) $< -o $@
-
-build/init.gen.c: src/mainclient/init.janet build/xxd
-	build/xxd $< $@ janet_gen_init
-build/webinit.gen.c: src/webclient/webinit.janet build/xxd
-	build/xxd $< $@ janet_gen_webinit
-build/boot.gen.c: src/boot/boot.janet build/xxd
-	build/xxd $< $@ janet_gen_boot
+build/c/janet.c: build/janet_boot src/boot/boot.janet
+	build/janet_boot . JANET_PATH '$(JANET_PATH)' > $@
+	cksum $@
 
 ########################
 ##### Amalgamation #####
 ########################
 
-amalg: build/janet.c build/janet.h build/core_image.c
+SONAME=libjanet.so.1.20
 
-AMALG_SOURCE=$(JANET_LOCAL_HEADERS) $(JANET_CORE_SOURCES) build/core_image.c
-build/janet.c: $(AMALG_SOURCE) tools/amalg.janet $(JANET_TARGET)
-	$(JANET_TARGET) tools/amalg.janet $(AMALG_SOURCE) > $@
-
-build/janet.h: src/include/janet.h
+build/c/shell.c: src/mainclient/shell.c
 	cp $< $@
 
+build/janet.h: $(JANET_TARGET) src/include/janet.h src/conf/janetconf.h
+	./$(JANET_TARGET) tools/patch-header.janet src/include/janet.h src/conf/janetconf.h $@
+
+build/janetconf.h: src/conf/janetconf.h
+	cp $< $@
+
+build/janet.o: build/c/janet.c src/conf/janetconf.h src/include/janet.h
+	$(HOSTCC) $(BUILD_CFLAGS) -c $< -o $@
+
+build/shell.o: build/c/shell.c src/conf/janetconf.h src/include/janet.h
+	$(HOSTCC) $(BUILD_CFLAGS) -c $< -o $@
+
+$(JANET_TARGET): build/janet.o build/shell.o
+	$(HOSTCC) $(LDFLAGS) $(BUILD_CFLAGS) -o $@ $^ $(CLIBS)
+
+$(JANET_LIBRARY): build/janet.o build/shell.o
+	$(HOSTCC) $(LDFLAGS) $(BUILD_CFLAGS) $(SONAME_SETTER)$(SONAME) -shared -o $@ $^ $(CLIBS)
+
+$(JANET_STATIC_LIBRARY): build/janet.o build/shell.o
+	$(HOSTAR) rcs $@ $^
+
 ###################
 ##### Testing #####
 ###################
 
+# Testing assumes HOSTCC=CC
+
 TEST_SCRIPTS=$(wildcard test/suite*.janet)
 
 repl: $(JANET_TARGET)
@@ -238,9 +212,11 @@ valgrind: $(JANET_TARGET)
 
 test: $(JANET_TARGET) $(TEST_PROGRAMS)
 	for f in test/suite*.janet; do ./$(JANET_TARGET) "$$f" || exit; done
+	for f in examples/*.janet; do ./$(JANET_TARGET) -k "$$f"; done
 
 valtest: $(JANET_TARGET) $(TEST_PROGRAMS)
 	for f in test/suite*.janet; do $(VALGRIND_COMMAND) ./$(JANET_TARGET) "$$f" || exit; done
+	for f in examples/*.janet; do ./$(JANET_TARGET) -k "$$f"; done
 
 callgrind: $(JANET_TARGET)
 	for f in test/suite*.janet; do valgrind --tool=callgrind ./$(JANET_TARGET) "$$f" || exit; done
@@ -252,10 +228,21 @@ callgrind: $(JANET_TARGET)
 dist: build/janet-dist.tar.gz
 
 build/janet-%.tar.gz: $(JANET_TARGET) \
-	src/include/janet.h src/include/janetconf.h \
+	build/janet.h \
 	janet.1 LICENSE CONTRIBUTING.md $(JANET_LIBRARY) $(JANET_STATIC_LIBRARY) \
-	build/doc.html README.md build/janet.c
-	tar -czvf $@ $^
+	README.md build/c/janet.c build/c/shell.c
+	mkdir -p build/$(JANET_DIST_DIR)/bin
+	cp $(JANET_TARGET) build/$(JANET_DIST_DIR)/bin/
+	mkdir -p build/$(JANET_DIST_DIR)/include
+	cp build/janet.h build/$(JANET_DIST_DIR)/include/
+	mkdir -p build/$(JANET_DIST_DIR)/lib/
+	cp $(JANET_LIBRARY) $(JANET_STATIC_LIBRARY) build/$(JANET_DIST_DIR)/lib/
+	mkdir -p build/$(JANET_DIST_DIR)/man/man1/
+	cp janet.1 build/$(JANET_DIST_DIR)/man/man1/janet.1
+	mkdir -p build/$(JANET_DIST_DIR)/src/
+	cp build/c/janet.c build/c/shell.c build/$(JANET_DIST_DIR)/src/
+	cp CONTRIBUTING.md LICENSE README.md build/$(JANET_DIST_DIR)/
+	cd build && tar -czvf ../$@ ./$(JANET_DIST_DIR)
 
 #########################
 ##### Documentation #####
@@ -270,11 +257,8 @@ build/doc.html: $(JANET_TARGET) tools/gendoc.janet
 ##### Installation #####
 ########################
 
-SONAME=libjanet.so.1
-
-.PHONY: $(PKG_CONFIG_PATH)/janet.pc
-$(PKG_CONFIG_PATH)/janet.pc: $(JANET_TARGET)
-	mkdir -p $(PKG_CONFIG_PATH)
+.INTERMEDIATE: build/janet.pc
+build/janet.pc: $(JANET_TARGET)
 	echo 'prefix=$(PREFIX)' > $@
 	echo 'exec_prefix=$${prefix}' >> $@
 	echo 'includedir=$(INCLUDEDIR)/janet' >> $@
@@ -285,27 +269,45 @@ $(PKG_CONFIG_PATH)/janet.pc: $(JANET_TARGET)
 	echo "Description: Library for the Janet programming language." >> $@
 	$(JANET_TARGET) -e '(print "Version: " janet/version)' >> $@
 	echo 'Cflags: -I$${includedir}' >> $@
-	echo 'Libs: -L$${libdir} -ljanet $(LDFLAGS)' >> $@
+	echo 'Libs: -L$${libdir} -ljanet' >> $@
 	echo 'Libs.private: $(CLIBS)' >> $@
 
-install: $(JANET_TARGET) $(PKG_CONFIG_PATH)/janet.pc
-	mkdir -p $(BINDIR)
-	cp $(JANET_TARGET) $(BINDIR)/janet
-	mkdir -p $(INCLUDEDIR)/janet
-	cp -rf $(JANET_HEADERS) $(INCLUDEDIR)/janet
-	mkdir -p $(JANET_PATH)
-	mkdir -p $(LIBDIR)
-	cp $(JANET_LIBRARY) $(LIBDIR)/libjanet.so.$(shell $(JANET_TARGET) -e '(print janet/version)')
-	cp $(JANET_STATIC_LIBRARY) $(LIBDIR)/libjanet.a
-	ln -sf $(SONAME) $(LIBDIR)/libjanet.so
-	ln -sf libjanet.so.$(shell $(JANET_TARGET) -e '(print janet/version)') $(LIBDIR)/$(SONAME)
-	cp tools/cook.janet $(JANET_PATH)
-	cp tools/jpm $(BINDIR)/jpm
-	cp tools/highlight.janet $(JANET_PATH)
-	cp tools/bars.janet $(JANET_PATH)
-	mkdir -p $(MANPATH)
-	cp janet.1 $(MANPATH)
-	-ldconfig $(LIBDIR)
+install: $(JANET_TARGET) $(JANET_LIBRARY) $(JANET_STATIC_LIBRARY) build/janet.pc build/janet.h
+	mkdir -p '$(DESTDIR)$(BINDIR)'
+	cp $(JANET_TARGET) '$(DESTDIR)$(BINDIR)/janet'
+	mkdir -p '$(DESTDIR)$(INCLUDEDIR)/janet'
+	cp -r build/janet.h '$(DESTDIR)$(INCLUDEDIR)/janet'
+	mkdir -p '$(DESTDIR)$(JANET_PATH)'
+	mkdir -p '$(DESTDIR)$(LIBDIR)'
+	cp $(JANET_LIBRARY) '$(DESTDIR)$(LIBDIR)/libjanet.so.$(shell $(JANET_TARGET) -e '(print janet/version)')'
+	cp $(JANET_STATIC_LIBRARY) '$(DESTDIR)$(LIBDIR)/libjanet.a'
+	ln -sf $(SONAME) '$(DESTDIR)$(LIBDIR)/libjanet.so'
+	ln -sf libjanet.so.$(shell $(JANET_TARGET) -e '(print janet/version)') $(DESTDIR)$(LIBDIR)/$(SONAME)
+	mkdir -p '$(DESTDIR)$(JANET_MANPATH)'
+	cp janet.1 '$(DESTDIR)$(JANET_MANPATH)'
+	mkdir -p '$(DESTDIR)$(JANET_PKG_CONFIG_PATH)'
+	cp build/janet.pc '$(DESTDIR)$(JANET_PKG_CONFIG_PATH)/janet.pc'
+	[ -z '$(DESTDIR)' ] && $(LDCONFIG) || true
+
+install-jpm-git: $(JANET_TARGET)
+	mkdir -p build
+	rm -rf build/jpm
+	git clone --depth=1 --branch='$(JPM_TAG)' https://github.com/janet-lang/jpm.git build/jpm
+	cd build/jpm && PREFIX='$(PREFIX)' \
+		DESTDIR=$(DESTDIR) \
+		JANET_MANPATH='$(JANET_MANPATH)' \
+		JANET_HEADERPATH='$(INCLUDEDIR)/janet' \
+		JANET_BINPATH='$(BINDIR)' \
+		JANET_LIBPATH='$(LIBDIR)' \
+		../../$(JANET_TARGET) ./bootstrap.janet
+
+uninstall:
+	-rm '$(DESTDIR)$(BINDIR)/janet'
+	-rm -rf '$(DESTDIR)$(INCLUDEDIR)/janet'
+	-rm -rf '$(DESTDIR)$(LIBDIR)'/libjanet.*
+	-rm '$(DESTDIR)$(JANET_PKG_CONFIG_PATH)/janet.pc'
+	-rm '$(DESTDIR)$(JANET_MANPATH)/janet.1'
+	# -rm -rf '$(DESTDIR)$(JANET_PATH)'/* - err on the side of correctness here
 
 #################
 ##### Other #####
@@ -318,25 +320,38 @@ grammar: build/janet.tmLanguage
 build/janet.tmLanguage: tools/tm_lang_gen.janet $(JANET_TARGET)
 	$(JANET_TARGET) $< > $@
 
+compile-commands:
+	# Requires pip install copmiledb
+	compiledb make
+
 clean:
 	-rm -rf build vgcore.* callgrind.*
+	-rm -rf test/install/build test/install/modpath
 
 test-install:
-	cd test/install && rm -rf build && jpm build && jpm test
+	echo "JPM has been removed from default install."
 
-build/embed_janet.o: build/janet.c $(JANET_HEADERS)
-	$(CC) $(CFLAGS) -c $< -o $@
-build/embed_main.o: test/amalg/main.c $(JANET_HEADERS)
-	$(CC) $(CFLAGS) -c $< -o $@
-build/embed_test: build/embed_janet.o build/embed_main.o
-	$(CC) $(LDFLAGS) $(CFLAGS) -o $@ $^ $(CLIBS)
+help:
+	@echo
+	@echo 'Janet: A Dynamic Language & Bytecode VM'
+	@echo
+	@echo Usage:
+	@echo '   make            Build Janet'
+	@echo '   make repl       Start a REPL from a built Janet'
+	@echo
+	@echo '   make test       Test a built Janet'
+	@echo '   make valgrind   Assess Janet with Valgrind'
+	@echo '   make callgrind  Assess Janet with Valgrind, using Callgrind'
+	@echo '   make valtest    Run the test suite with Valgrind to check for memory leaks'
+	@echo '   make dist       Create a distribution tarball'
+	@echo '   make docs       Generate documentation'
+	@echo '   make debug      Run janet with GDB or LLDB'
+	@echo '   make install    Install into the current filesystem'
+	@echo '   make uninstall  Uninstall from the current filesystem'
+	@echo '   make clean      Clean intermediate build artifacts'
+	@echo "   make format     Format Janet's own source files"
+	@echo '   make grammar    Generate a TextMate language grammar'
+	@echo
 
-test-amalg: build/embed_test
-	./build/embed_test
-
-uninstall:
-	-rm $(BINDIR)/../$(JANET_TARGET)
-	-rm -rf $(INCLUDEDIR)
-
-.PHONY: clean install repl debug valgrind test amalg \
-	valtest emscripten dist uninstall docs grammar format
+.PHONY: clean install repl debug valgrind test \
+	valtest dist uninstall docs grammar format help compile-commands

README.md

@@ -1,49 +1,56 @@
 [![Join the chat](https://badges.gitter.im/janet-language/community.svg)](https://gitter.im/janet-language/community)
  
-[![Appveyor Status](https://ci.appveyor.com/api/projects/status/bjraxrxexmt3sxyv/branch/master?svg=true)](https://ci.appveyor.com/project/bakpakin/janet/branch/master)
-[![Build Status](https://travis-ci.org/janet-lang/janet.svg?branch=master)](https://travis-ci.org/janet-lang/janet)
-[![builds.sr.ht status](https://builds.sr.ht/~bakpakin/janet/.freebsd.yaml.svg)](https://builds.sr.ht/~bakpakin/janet/.freebsd.yaml?)
-[![builds.sr.ht status](https://builds.sr.ht/~bakpakin/janet/.openbsd.yaml.svg)](https://builds.sr.ht/~bakpakin/janet/.openbsd.yaml?)
+[![builds.sr.ht status](https://builds.sr.ht/~bakpakin/janet/commits/freebsd.yml.svg)](https://builds.sr.ht/~bakpakin/janet/commits/freebsd.yml?)
+[![builds.sr.ht status](https://builds.sr.ht/~bakpakin/janet/commits/openbsd.yml.svg)](https://builds.sr.ht/~bakpakin/janet/commits/openbsd.yml?)
+[![Actions Status](https://github.com/janet-lang/janet/actions/workflows/test.yml/badge.svg)](https://github.com/janet-lang/janet/actions/workflows/test.yml)
 
 <img src="https://raw.githubusercontent.com/janet-lang/janet/master/assets/janet-w200.png" alt="Janet logo" width=200 align="left">
 
 **Janet** is a functional and imperative programming language and bytecode interpreter. It is a
-modern lisp, but lists are replaced
-by other data structures with better utility and performance (arrays, tables, structs, tuples).
+lisp-like language, but lists are replaced
+by other data structures (arrays, tables (hash table), struct (immutable hash table), tuples).
 The language also supports bridging to native code written in C, meta-programming with macros, and bytecode assembly.
 
-There is a repl for trying out the language, as well as the ability
+There is a REPL for trying out the language, as well as the ability
 to run script files. This client program is separate from the core runtime, so
-janet could be embedded into other programs. Try janet in your browser at
+Janet can be embedded in other programs. Try Janet in your browser at
 [https://janet-lang.org](https://janet-lang.org).
 
+If you'd like to financially support the ongoing development of Janet, consider
+[sponsoring its primary author](https://github.com/sponsors/bakpakin) through GitHub.
+
 <br>
 
 ## Use Cases
 
-Janet makes a good system scripting language, or a language to embed in other programs. Think Lua or Guile.
+Janet makes a good system scripting language, or a language to embed in other programs.
+It's like Lua and Guile in that regard. It has more built-in functionality and a richer core language than
+Lua, but smaller than GNU Guile or Python.
 
 ## Features
 
+* Configurable at build time - turn features on or off for a smaller or more featureful build
 * Minimal setup - one binary and you are good to go!
-* First class closures
+* First-class closures
 * Garbage collection
-* First class green threads (continuations)
-* Python style generators (implemented as a plain macro)
+* First-class green threads (continuations)
+* Python-style generators (implemented as a plain macro)
 * Mutable and immutable arrays (array/tuple)
 * Mutable and immutable hashtables (table/struct)
 * Mutable and immutable strings (buffer/string)
-* Lisp Macros
+* Macros
+* Multithreading
+* Per-thread event loop for efficient evented IO
 * Byte code interpreter with an assembly interface, as well as bytecode verification
-* Tailcall Optimization
+* Tail call Optimization
 * Direct interop with C via abstract types and C functions
 * Dynamically load C libraries
 * Functional and imperative standard library
 * Lexical scoping
 * Imperative programming as well as functional
 * REPL
-* Parsing Expression Grammars built in to the core library
-* 300+ functions and macros in the core library
+* Parsing Expression Grammars built into the core library
+* 400+ functions and macros in the core library
 * Embedding Janet in other programs
 * Interactive environment with detailed stack traces
 
@@ -52,16 +59,18 @@ Janet makes a good system scripting language, or a language to embed in other pr
 * For a quick tutorial, see [the introduction](https://janet-lang.org/docs/index.html) for more details.
 * For the full API for all functions in the core library, see [the core API doc](https://janet-lang.org/api/index.html)
 
-Documentation is also available locally in the repl.
+Documentation is also available locally in the REPL.
 Use the `(doc symbol-name)` macro to get API
 documentation for symbols in the core library. For example,
 ```
-(doc doc)
+(doc apply)
 ```
-Shows documentation for the doc macro.
+Shows documentation for the `apply` function.
 
 To get a list of all bindings in the default
-environment, use the `(all-symbols)` function.
+environment, use the `(all-bindings)` function. You
+can also use the `(doc)` macro with no arguments if you are in the REPL
+to show bound symbols.
 
 ## Source
 
@@ -71,7 +80,9 @@ the SourceHut mirror is actively maintained.
 
 ## Building
 
-### macos and Unix-like
+### macOS and Unix-like
+
+The Makefile is non-portable and requires GNU-flavored make.
 
 ```
 cd somewhere/my/projects/janet
@@ -80,9 +91,11 @@ make test
 make repl
 ```
 
+Find out more about the available make targets by running `make help`.
+
 ### 32-bit Haiku
 
-32-bit Haiku build instructions are the same as the unix-like build instructions,
+32-bit Haiku build instructions are the same as the UNIX-like build instructions,
 but you need to specify an alternative compiler, such as `gcc-x86`.
 
 ```
@@ -94,7 +107,7 @@ make repl
 
 ### FreeBSD
 
-FreeBSD build instructions are the same as the unix-like build instuctions,
+FreeBSD build instructions are the same as the UNIX-like build instructions,
 but you need `gmake` to compile. Alternatively, install directly from
 packages, using `pkg install lang/janet`.
 
@@ -105,6 +118,11 @@ gmake test
 gmake repl
 ```
 
+### NetBSD
+
+NetBSD build instructions are the same as the FreeBSD build instructions.
+Alternatively, install directly from packages, using `pkgin install janet`.
+
 ### Windows
 
 1. Install [Visual Studio](https://visualstudio.microsoft.com/thank-you-downloading-visual-studio/?sku=Community&rel=15#) or [Visual Studio Build Tools](https://visualstudio.microsoft.com/thank-you-downloading-visual-studio/?sku=BuildTools&rel=15#)
@@ -112,93 +130,170 @@ gmake repl
 3. Run `build_win` to compile janet.
 4. Run `build_win test` to make sure everything is working.
 
-### Emscripten
+To build an `.msi` installer executable, in addition to the above steps, you will have to:
 
-To build janet for the web via [Emscripten](https://kripken.github.io/emscripten-site/), make sure you
-have `emcc` installed and on your path. On a linux or macOS system, use `make emscripten` to build
-`janet.js` and `janet.wasm` - both are needed to run janet in a browser or in node.
-The JavaScript build is what runs the repl on the main website,
-but really serves mainly as a proof of concept. Janet will run slower in a browser.
-Building with emscripten on windows is currently unsupported.
+5. Install, or otherwise add to your PATH the [WiX 3.11 Toolset](https://github.com/wixtoolset/wix3/releases)
+6. run `build_win dist`
+
+Now you should have an `.msi`. You can run `build_win install` to install the `.msi`, or execute the file itself.
 
 ### Meson
 
-Janet also has a build file for [Meson](https://mesonbuild.com/), a cross platform build
-system. This is not currently the main supported build system, but should work on any
-system that supports meson. Meson also provides much better IDE integration than Make or batch files.
+Janet also has a build file for [Meson](https://mesonbuild.com/), a cross-platform build
+system. Although Meson has a Python dependency, Meson is a very complete build system that
+is maybe more convenient and flexible for integrating into existing pipelines.
+Meson also provides much better IDE integration than Make or batch files, as well as support
+for cross-compilation.
+
+For the impatient, building with Meson is as follows. The options provided to
+`meson setup` below emulate Janet's Makefile.
+
+```sh
+git clone https://github.com/janet-lang/janet.git
+cd janet
+meson setup build \
+          --buildtype release \
+          --optimization 2 \
+          --libdir /usr/local/lib \
+          -Dgit_hash=$(git log --pretty=format:'%h' -n 1)
+ninja -C build
+
+# Run the binary
+build/janet
+
+# Installation
+ninja -C build install
+```
+
+## Development
+
+Janet can be hacked on with pretty much any environment you like, but for IDE
+lovers, [Gnome Builder](https://wiki.gnome.org/Apps/Builder) is probably the
+best option, as it has excellent meson integration. It also offers code completion
+for Janet's C API right out of the box, which is very useful for exploring. VSCode, Vim,
+Emacs, and Atom will have syntax packages for the Janet language, though.
 
 ## Installation
 
-See [the Introduction](https://janet-lang.org/introduction.html) for more details.
+See the [Introduction](https://janet-lang.org/docs/index.html) for more details. If you just want
+to try out the language, you don't need to install anything. You can also move the `janet` executable wherever you want on your system and run it.
 
 ## Usage
 
-A repl is launched when the binary is invoked with no arguments. Pass the -h flag
+A REPL is launched when the binary is invoked with no arguments. Pass the -h flag
 to display the usage information. Individual scripts can be run with `./janet myscript.janet`
 
 If you are looking to explore, you can print a list of all available macros, functions, and constants
-by entering the command `(all-bindings)` into the repl.
+by entering the command `(all-bindings)` into the REPL.
 
 ```
-$ ./janet
-Janet 0.0.0 alpha  Copyright (C) 2017-2018 Calvin Rose
+$ janet
+Janet 1.7.1-dev-951e10f  Copyright (C) 2017-2020 Calvin Rose
 janet:1:> (+ 1 2 3)
 6
 janet:2:> (print "Hello, World!")
 Hello, World!
 nil
 janet:3:> (os/exit)
-$ ./janet -h
-usage: ./janet [options] scripts...
+$ janet -h
+usage: build/janet [options] script args...
 Options are:
-  -h Show this help
-  -v Print the version string
-  -s Use raw stdin instead of getline like functionality
-  -e Execute a string of janet
-  -r Enter the repl after running all scripts
-  -p Keep on executing if there is a top level error (persistent)
-  -- Stop handling option
-$
+  -h : Show this help
+  -v : Print the version string
+  -s : Use raw stdin instead of getline like functionality
+  -e code : Execute a string of janet
+  -r : Enter the REPL after running all scripts
+  -p : Keep on executing if there is a top-level error (persistent)
+  -q : Hide prompt, logo, and REPL output (quiet)
+  -k : Compile scripts but do not execute (flycheck)
+  -m syspath : Set system path for loading global modules
+  -c source output : Compile janet source code into an image
+  -n : Disable ANSI color output in the REPL
+  -l path : Execute code in a file before running the main script
+  -- : Stop handling options
 ```
 
 If installed, you can also run `man janet` to get usage information.
 
 ## Embedding
 
-The C API for Janet is not yet documented but coming soon.
-
-Janet can be embedded in a host program very easily. There is a make target
-`make amalg` which creates the file `build/janet.c`, which is a single C file
+Janet can be embedded in a host program very easily. The normal build
+will create a file `build/janet.c`, which is a single C file
 that contains all the source to Janet. This file, along with
-`src/include/janet.h` and `src/include/janetconf.h` can dragged into any C
+`src/include/janet.h` and `src/conf/janetconf.h` can be dragged into any C
 project and compiled into the project. Janet should be compiled with `-std=c99`
 on most compilers, and will need to be linked to the math library, `-lm`, and
 the dynamic linker, `-ldl`, if one wants to be able to load dynamic modules. If
 there is no need for dynamic modules, add the define
 `-DJANET_NO_DYNAMIC_MODULES` to the compiler options.
 
+See the [Embedding Section](https://janet-lang.org/capi/embedding.html) on the website for more information.
+
 ## Examples
 
 See the examples directory for some example janet code.
 
 ## Discussion
 
-Feel free to ask questions and join discussion on the [Janet Gitter Channel](https://gitter.im/janet-language/community).
-Alternatively, check out [the #janet channel on Freenode](https://webchat.freenode.net/)
+Feel free to ask questions and join the discussion on the [Janet Gitter Channel](https://gitter.im/janet-language/community).
+Gitter provides Matrix and irc bridges as well.
 
 ## FAQ
 
-### Why is my terminal is spitting out junk when I run the repl?
+### Where is (favorite feature from other language)?
+
+It may exist, it may not. If you want to propose major language features, go ahead and open an issue, but
+they will likely by closed as "will not implement". Often, such features make one usecase simpler at the expense
+of 5 others by making the language more complicated.
+
+### Is there a language spec?
+
+There is not currently a spec besides the documentation at https://janet-lang.org.
+
+### Is this Scheme/Common Lisp? Where are the cons cells?
+
+Nope. There are no cons cells here.
+
+### Is this a Clojure port?
+
+No. It's similar to Clojure superficially because I like Lisps and I like the aesthetics.
+Internally, Janet is not at all like Clojure.
+
+### Are the immutable data structures (tuples and structs) implemented as hash tries?
+
+No. They are immutable arrays and hash tables. Don't try and use them like Clojure's vectors
+and maps, instead they work well as table keys or other identifiers.
+
+### Can I do Object Oriented programming with Janet?
+
+To some extent, yes. However, it is not the recommended method of abstraction, and performance may suffer.
+That said, tables can be used to make mutable objects with inheritance and polymorphism, where object
+methods are implemeted with keywords.
+
+```
+(def Car @{:honk (fn [self msg] (print "car " self " goes " msg)) })
+(def my-car (table/setproto @{} Car))
+(:honk my-car "Beep!")
+```
+
+### Why can't we add (feature from Clojure) into the core?
+
+Usually, one of a few reasons:
+- Often, it already exists in a different form and the Clojure port would be redundant.
+- Clojure programs often generate a lot of garbage and rely on the JVM to clean it up.
+  Janet does not run on the JVM, and has a more primitive garbage collector.
+- We want to keep the Janet core small. With Lisps, usually a feature can be added as a library
+  without feeling "bolted on", especially when compared to ALGOL like languages. Adding features
+  to the core also makes it a bit more difficult to keep Janet maximally portable.
+
+### Why is my terminal spitting out junk when I run the REPL?
 
 Make sure your terminal supports ANSI escape codes. Most modern terminals will
-support these, but some older terminals, windows consoles, or embedded terminals
-will not. If your terminal does not support ANSI escape codes, run the repl with
+support these, but some older terminals, Windows consoles, or embedded terminals
+will not. If your terminal does not support ANSI escape codes, run the REPL with
 the `-n` flag, which disables color output. You can also try the `-s` if further issues
 ensue.
 
-## Why Janet
+## Why is it called "Janet"?
 
 Janet is named after the almost omniscient and friendly artificial being in [The Good Place](https://en.wikipedia.org/wiki/The_Good_Place).
-
-<img src="https://raw.githubusercontent.com/janet-lang/janet/master/assets/janet-the-good-place.gif" alt="Janet logo" width="115px" align="left">
-

appveyor.yml

@@ -1,47 +0,0 @@
-version: build-{build}
-clone_folder: c:\projects\janet
-image:
-- Visual Studio 2017
-configuration:
-- Release
-- Debug
-platform:
-- x64
-environment:
-  matrix:
-  - arch: Win64
-matrix:
-  fast_finish: true
-
-# skip unsupported combinations
-init:
-- call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat"
-
-install:
-    - build_win
-    - build_win test
-    - choco install nsis -y -pre
-    - build_win dist
-    - call "C:\Program Files (x86)\NSIS\makensis.exe" janet-installer.nsi 
-    
-build: off
-
-only_commits:
-  files:
-    - appveyor.yml
-    - src/
-
-artifacts:
-    - path: janet-installer.exe
-      name: janet-windows-installer.exe
-      type: File
-
-deploy:
-  description: 'The Janet Programming Language.'
-  provider: GitHub
-  auth_token:
-    secure: lwEXy09qhj2jSH9s1C/KvCkAUqJSma8phFR+0kbsfUc3rVxpNK5uD3z9Md0SjYRx
-  artifact: janet-windows
-  draft: true
-  on:
-      APPVEYOR_REPO_TAG: true

build_win.bat

@@ -13,78 +13,60 @@
 @if "%1"=="clean" goto CLEAN
 @if "%1"=="test" goto TEST
 @if "%1"=="dist" goto DIST
+@if "%1"=="install" goto INSTALL
+@if "%1"=="all" goto ALL
 
 @rem Set compile and link options here
 @setlocal
-@set JANET_COMPILE=cl /nologo /Isrc\include /c /O2 /W3 /LD /D_CRT_SECURE_NO_WARNINGS
+
+@rem Example use asan
+@rem set JANET_COMPILE=cl /nologo /Isrc\include /Isrc\conf /c /O2 /W3 /D_CRT_SECURE_NO_WARNINGS /MD /fsanitize=address /Zi
+@rem set JANET_LINK=link /nologo clang_rt.asan_dynamic-x86_64.lib clang_rt.asan_dynamic_runtime_thunk-x86_64.lib
+
+@set JANET_COMPILE=cl /nologo /Isrc\include /Isrc\conf /c /O2 /W3 /D_CRT_SECURE_NO_WARNINGS /MD
 @set JANET_LINK=link /nologo
 
-mkdir build
-mkdir build\core
-mkdir build\mainclient
-mkdir build\boot
+@set JANET_LINK_STATIC=lib /nologo
 
-@rem Build the xxd tool for generating sources
-@cl /nologo /c tools/xxd.c /Fobuild\xxd.obj
-@if errorlevel 1 goto :BUILDFAIL
-@link /nologo /out:build\xxd.exe build\xxd.obj
-@if errorlevel 1 goto :BUILDFAIL
+@rem Add janet build tag
+if not "%JANET_BUILD%" == "" (
+    @set JANET_COMPILE=%JANET_COMPILE% /DJANET_BUILD="\"%JANET_BUILD%\""
+)
 
-@rem Generate the embedded sources
-@build\xxd.exe src\mainclient\init.janet build\init.gen.c janet_gen_init
-@if errorlevel 1 goto :BUILDFAIL
-@build\xxd.exe src\boot\boot.janet build\boot.gen.c janet_gen_boot
-@if errorlevel 1 goto :BUILDFAIL
+if not exist build mkdir build
+if not exist build\core mkdir build\core
+if not exist build\c mkdir build\c
+if not exist build\boot mkdir build\boot
 
-@rem Build the generated sources
-@%JANET_COMPILE% /Fobuild\mainclient\init.gen.obj build\init.gen.c
-@if errorlevel 1 goto :BUILDFAIL
-@%JANET_COMPILE% /Fobuild\boot\boot.gen.obj build\boot.gen.c
-@if errorlevel 1 goto :BUILDFAIL
-
-@rem Build the bootstrap interpretter
+@rem Build the bootstrap interpreter
 for %%f in (src\core\*.c) do (
-    @%JANET_COMPILE% /DJANET_BOOTSTRAP /Fobuild\boot\%%~nf.obj %%f
+    %JANET_COMPILE% /DJANET_BOOTSTRAP /Fobuild\boot\%%~nf.obj %%f
     @if errorlevel 1 goto :BUILDFAIL
 )
 for %%f in (src\boot\*.c) do (
-    @%JANET_COMPILE% /DJANET_BOOTSTRAP /Fobuild\boot\%%~nf.obj %%f
+    %JANET_COMPILE% /DJANET_BOOTSTRAP /Fobuild\boot\%%~nf.obj %%f
     @if errorlevel 1 goto :BUILDFAIL
 )
 %JANET_LINK% /out:build\janet_boot.exe build\boot\*.obj
 @if errorlevel 1 goto :BUILDFAIL
-build\janet_boot build\core_image.c
-
-@rem Build the core image
-@%JANET_COMPILE% /Fobuild\core_image.obj build\core_image.c
-@if errorlevel 1 goto :BUILDFAIL
+build\janet_boot . > build\c\janet.c
 
 @rem Build the sources
-for %%f in (src\core\*.c) do (
-    @%JANET_COMPILE% /Fobuild\core\%%~nf.obj %%f
-    @if errorlevel 1 goto :BUILDFAIL
-)
+%JANET_COMPILE% /Fobuild\janet.obj build\c\janet.c
+@if errorlevel 1 goto :BUILDFAIL
+%JANET_COMPILE% /Fobuild\shell.obj src\mainclient\shell.c
+@if errorlevel 1 goto :BUILDFAIL
 
 @rem Build the resources
 rc /nologo /fobuild\janet_win.res janet_win.rc
 
-@rem Build the main client
-for %%f in (src\mainclient\*.c) do (
-    @%JANET_COMPILE% /Fobuild\mainclient\%%~nf.obj %%f
-    @if errorlevel 1 goto :BUILDFAIL
-)
-
 @rem Link everything to main client
-%JANET_LINK% /out:janet.exe build\core\*.obj build\mainclient\*.obj build\core_image.obj build\janet_win.res
+%JANET_LINK% /out:janet.exe build\janet.obj build\shell.obj build\janet_win.res
 @if errorlevel 1 goto :BUILDFAIL
 
-@rem Gen amlag
-setlocal enabledelayedexpansion
-set "amalg_files="
-for %%f in (src\core\*.c) do (
-    set "amalg_files=!amalg_files! %%f"
-)
-janet.exe tools\amalg.janet src\core\util.h src\core\state.h src\core\gc.h src\core\vector.h src\core\fiber.h src\core\regalloc.h src\core\compile.h src\core\emit.h src\core\symcache.h %amalg_files% build\core_image.c > build\janet.c
+@rem Build static library (libjanet.a)
+%JANET_LINK_STATIC% /out:build\libjanet.lib build\janet.obj
+@if errorlevel 1 goto :BUILDFAIL
 
 echo === Successfully built janet.exe for Windows ===
 echo === Run 'build_win test' to run tests. ==
@@ -105,17 +87,18 @@ exit /b 1
 @echo command prompt.
 exit /b 0
 
-@rem Clean build artifacts 
+@rem Clean build artifacts
 :CLEAN
-del janet.exe janet.exp janet.lib
+del *.exe *.lib *.exp
 rd /s /q build
+rd /s /q dist
 exit /b 0
 
 @rem Run tests
 :TEST
 for %%f in (test/suite*.janet) do (
     janet.exe test\%%f
-    @if errorlevel 1 goto :TESTFAIL
+    @if errorlevel 1 goto TESTFAIL
 )
 exit /b 0
 
@@ -123,19 +106,61 @@ exit /b 0
 :DIST
 mkdir dist
 janet.exe tools\gendoc.janet > dist\doc.html
+janet.exe tools\removecr.janet dist\doc.html
+janet.exe tools\removecr.janet build\c\janet.c
 
-copy build\janet.c dist\janet.c
+copy build\c\janet.c dist\janet.c
+copy src\mainclient\shell.c dist\shell.c
 copy janet.exe dist\janet.exe
 copy LICENSE dist\LICENSE
 copy README.md dist\README.md
+
 copy janet.lib dist\janet.lib
 copy janet.exp dist\janet.exp
-copy src\include\janet.h dist\janet.h
-copy src\include\janetconf.h dist\janetconf.h
-copy tools\cook.janet dist\cook.janet
-copy tools\highlight.janet dist\highlight.janet
-copy tools\jpm dist\jpm
-copy tools\jpm.bat dist\jpm.bat
+
+janet.exe tools\patch-header.janet src\include\janet.h src\conf\janetconf.h build\janet.h
+copy build\janet.h dist\janet.h
+copy build\libjanet.lib dist\libjanet.lib
+
+@rem Create installer
+janet.exe -e "(->> janet/version (peg/match ''(* :d+ `.` :d+ `.` :d+)) first print)" > build\version.txt
+janet.exe -e "(print (os/arch))" > build\arch.txt
+set /p JANET_VERSION= < build\version.txt
+set /p BUILDARCH= < build\arch.txt
+echo "JANET_VERSION is %JANET_VERSION%"
+if defined APPVEYOR_REPO_TAG_NAME (
+    set RELEASE_VERSION=%APPVEYOR_REPO_TAG_NAME%
+) else (
+    set RELEASE_VERSION=%JANET_VERSION%
+)
+if defined CI (
+    set WIXBIN="c:\Program Files (x86)\WiX Toolset v3.11\bin\"
+) else (
+    set WIXBIN=
+)
+%WIXBIN%candle.exe tools\msi\janet.wxs -arch %BUILDARCH% -out build\
+%WIXBIN%light.exe "-sice:ICE38" -b tools\msi -ext WixUIExtension build\janet.wixobj -out janet-%RELEASE_VERSION%-windows-%BUILDARCH%-installer.msi
+exit /b 0
+
+@rem Run the installer. (Installs to the local user with default settings)
+:INSTALL
+FOR %%a in (janet-*-windows-*-installer.msi) DO (
+    @echo Running Installer %%a...
+    %%a /QN
+)
+exit /b 0
+
+@rem build, test, dist, install. Useful for local dev.
+:ALL
+call %0 build
+@if errorlevel 1 exit /b 1
+call %0 test
+@if errorlevel 1 exit /b 1
+call %0 dist
+@if errorlevel 1 exit /b 1
+call %0 install
+@if errorlevel 1 exit /b 1
+@echo Done!
 exit /b 0
 
 :TESTFAIL

examples/assembly.janet

@@ -1,23 +1,22 @@
 # Example of dst bytecode assembly
 
 # Fibonacci sequence, implemented with naive recursion.
-(def fibasm (asm '{
-  arity 1
-  bytecode [
-    (ltim 1 0 0x2)      # $1 = $0 < 2
-    (jmpif 1 :done)     # if ($1) goto :done
-    (lds 1)             # $1 = self
-    (addim 0 0 -0x1)    # $0 = $0 - 1
-    (push 0)            # push($0), push argument for next function call
-    (call 2 1)          # $2 = call($1)
-    (addim 0 0 -0x1)    # $0 = $0 - 1
-    (push 0)            # push($0)
-    (call 0 1)          # $0 = call($1)
-    (add 0 0 2)        # $0 = $0 + $2 (integers)
-    :done
-    (ret 0)             # return $0
-  ]
-}))
+(def fibasm
+  (asm
+    '{:arity 1
+      :bytecode @[(ltim 1 0 0x2)   # $1 = $0 < 2
+                  (jmpif 1 :done)  # if ($1) goto :done
+                  (lds 1)          # $1 = self
+                  (addim 0 0 -0x1) # $0 = $0 - 1
+                  (push 0)         # push($0), push argument for next function call
+                  (call 2 1)       # $2 = call($1)
+                  (addim 0 0 -0x1) # $0 = $0 - 1
+                  (push 0)         # push($0)
+                  (call 0 1)       # $0 = call($1)
+                  (add 0 0 2)      # $0 = $0 + $2 (integers)
+                  :done
+                  (ret 0)          # return $0
+]}))
 
 # Test it
 

examples/async-execute.janet

@@ -0,0 +1,22 @@
+(defn dowork [name n]
+  (print name " starting work...")
+  (os/execute [(dyn :executable) "-e" (string "(os/sleep " n ")")] :p)
+  (print name " finished work!"))
+
+# Will be done in parallel
+(print "starting group A")
+(ev/call dowork "A 2" 2)
+(ev/call dowork "A 1" 1)
+(ev/call dowork "A 3" 3)
+
+(ev/sleep 4)
+
+# Will also be done in parallel
+(print "starting group B")
+(ev/call dowork "B 2" 2)
+(ev/call dowork "B 1" 1)
+(ev/call dowork "B 3" 3)
+
+(ev/sleep 4)
+
+(print "all work done")

examples/channel.janet

@@ -0,0 +1,15 @@
+(def c (ev/chan 4))
+
+(defn writer []
+  (for i 0 10
+    (ev/sleep 0.1)
+    (print "writer giving item " i "...")
+    (ev/give c (string "item " i))))
+
+(defn reader [name]
+  (forever
+    (print "reader " name " got " (ev/take c))))
+
+(ev/call writer)
+(each letter [:a :b :c :d :e :f :g]
+  (ev/call reader letter))

examples/debug.janet

@@ -0,0 +1,11 @@
+# Load this file and run (myfn) to see the debugger
+
+(defn myfn
+  []
+  (debug)
+  (for i 0 10 (print i)))
+
+(debug/fbreak myfn 3)
+
+# Enable debugging in repl with
+# (setdyn :debug true)

examples/debugger.janet

@@ -0,0 +1,151 @@
+###
+### A useful debugger library for Janet. Should be used
+### inside a debug repl. This has been moved into the core.
+###
+
+(defn .fiber
+  "Get the current fiber being debugged."
+  []
+  (dyn :fiber))
+
+(defn .stack
+  "Print the current fiber stack"
+  []
+  (print)
+  (with-dyns [:err-color false] (debug/stacktrace (.fiber) ""))
+  (print))
+
+(defn .frame
+  "Show a stack frame"
+  [&opt n]
+  (def stack (debug/stack (.fiber)))
+  (in stack (or n 0)))
+
+(defn .fn
+  "Get the current function"
+  [&opt n]
+  (in (.frame n) :function))
+
+(defn .slots
+  "Get an array of slots in a stack frame"
+  [&opt n]
+  (in (.frame n) :slots))
+
+(defn .slot
+  "Get the value of the nth slot."
+  [&opt nth frame-idx]
+  (in (.slots frame-idx) (or nth 0)))
+
+(defn .quit
+  "Resume (dyn :fiber) with the value passed to it after exiting the debugger."
+  [&opt val]
+  (setdyn :exit true)
+  (setdyn :resume-value val)
+  nil)
+
+(defn .disasm
+  "Gets the assembly for the current function."
+  [&opt n]
+  (def frame (.frame n))
+  (def func (frame :function))
+  (disasm func))
+
+(defn .bytecode
+  "Get the bytecode for the current function."
+  [&opt n]
+  ((.disasm n) 'bytecode))
+
+(defn .ppasm
+  "Pretty prints the assembly for the current function"
+  [&opt n]
+  (def frame (.frame n))
+  (def func (frame :function))
+  (def dasm (disasm func))
+  (def bytecode (dasm 'bytecode))
+  (def pc (frame :pc))
+  (def sourcemap (dasm 'sourcemap))
+  (var last-loc [-2 -2])
+  (print "\n  function:   " (dasm 'name) " [" (in dasm 'source "") "]")
+  (when-let [constants (dasm 'constants)]
+    (printf "  constants:  %.4Q" constants))
+  (printf "  slots:      %.4Q\n" (frame :slots))
+  (def padding (string/repeat " " 20))
+  (loop [i :range [0 (length bytecode)]
+         :let [instr (bytecode i)]]
+    (prin (if (= (tuple/type instr) :brackets) "*" " "))
+    (prin (if (= i pc) "> " "  "))
+    (prinf "\e[33m%.20s\e[0m" (string (string/join (map string instr) " ") padding))
+    (when sourcemap
+      (let [[sl sc] (sourcemap i)
+            loc [sl sc]]
+        (when (not= loc last-loc)
+          (set last-loc loc)
+          (prin " # line " sl ", column " sc))))
+    (print))
+  (print))
+
+(defn .source
+  "Show the source code for the function being debugged."
+  [&opt n]
+  (def frame (.frame n))
+  (def s (frame :source))
+  (def all-source (slurp s))
+  (print "\n\e[33m" all-source "\e[0m\n"))
+
+(defn .breakall
+  "Set breakpoints on all instructions in the current function."
+  [&opt n]
+  (def fun (.fn n))
+  (def bytecode (.bytecode n))
+  (for i 0 (length bytecode)
+    (debug/fbreak fun i))
+  (print "Set " (length bytecode) " breakpoints in " fun))
+
+(defn .clearall
+  "Clear all breakpoints on the current function."
+  [&opt n]
+  (def fun (.fn n))
+  (def bytecode (.bytecode n))
+  (for i 0 (length bytecode)
+    (debug/unfbreak fun i))
+  (print "Cleared " (length bytecode) " breakpoints in " fun))
+
+(defn .break
+  "Set breakpoint at the current pc."
+  []
+  (def frame (.frame))
+  (def fun (frame :function))
+  (def pc (frame :pc))
+  (debug/fbreak fun pc)
+  (print "Set breakpoint in " fun " at pc=" pc))
+
+(defn .clear
+  "Clear the current breakpoint"
+  []
+  (def frame (.frame))
+  (def fun (frame :function))
+  (def pc (frame :pc))
+  (debug/unfbreak fun pc)
+  (print "Cleared breakpoint in " fun " at pc=" pc))
+
+(defn .next
+  "Go to the next breakpoint."
+  [&opt n]
+  (var res nil)
+  (for i 0 (or n 1)
+    (set res (resume (.fiber))))
+  res)
+
+(defn .nextc
+  "Go to the next breakpoint, clearing the current breakpoint."
+  [&opt n]
+  (.clear)
+  (.next n))
+
+(defn .step
+  "Execute the next n instructions."
+  [&opt n]
+  (var res nil)
+  (for i 0 (or n 1)
+    (set res (debug/step (.fiber))))
+  res)

examples/echoclient.janet

@@ -0,0 +1,5 @@
+(with [conn (net/connect "127.0.0.1" 8000)]
+  (print "writing abcdefg...")
+  (:write conn "abcdefg")
+  (print "reading...")
+  (printf "got: %v" (:read conn 1024)))

examples/echoserve.janet

@@ -0,0 +1,15 @@
+(defn handler
+  "Simple handler for connections."
+  [stream]
+  (defer (:close stream)
+    (def id (gensym))
+    (def b @"")
+    (print "Connection " id "!")
+    (while (:read stream 1024 b)
+      (printf " %v -> %v" id b)
+      (:write stream b)
+      (buffer/clear b))
+    (printf "Done %v!" id)
+    (ev/sleep 0.5)))
+
+(net/server "127.0.0.1" "8000" handler)

examples/evsleep.janet

@@ -0,0 +1,22 @@
+(defn worker
+  "Run for a number of iterations."
+  [name iterations]
+  (for i 0 iterations
+    (ev/sleep 1)
+    (print "worker " name " iteration " i)))
+
+(ev/call worker :a 10)
+(ev/sleep 0.2)
+(ev/call worker :b 5)
+(ev/sleep 0.3)
+(ev/call worker :c 12)
+
+(defn worker2
+  [name]
+  (repeat 10
+    (ev/sleep 0.2)
+    (print name " working")))
+
+(ev/go worker2 :bob)
+(ev/go worker2 :joe)
+(ev/go worker2 :sally)

examples/iterate-fiber.janet

@@ -0,0 +1,19 @@
+(def f
+  (coro
+    (for i 0 10
+      (yield (string "yield " i))
+      (os/sleep 0))))
+
+(print "simple yielding")
+(each item f (print "got: " item ", now " (fiber/status f)))
+
+(def f
+  (coro
+    (for i 0 10
+      (yield (string "yield " i))
+      (ev/sleep 0))))
+
+(print "complex yielding")
+(each item f (print "got: " item ", now " (fiber/status f)))
+
+(print (fiber/status f))

examples/numarray/numarray.c

@@ -7,13 +7,13 @@ typedef struct {
 } num_array;
 
 static num_array *num_array_init(num_array *array, size_t size) {
-    array->data = (double *)calloc(size, sizeof(double));
+    array->data = (double *)janet_calloc(size, sizeof(double));
     array->size = size;
     return array;
 }
 
 static void num_array_deinit(num_array *array) {
-    free(array->data);
+    janet_free(array->data);
 }
 
 static int num_array_gc(void *p, size_t s) {
@@ -23,7 +23,7 @@ static int num_array_gc(void *p, size_t s) {
     return 0;
 }
 
-Janet num_array_get(void *p, Janet key);
+int num_array_get(void *p, Janet key, Janet *out);
 void num_array_put(void *p, Janet key, Janet value);
 
 static const JanetAbstractType num_array_type = {
@@ -31,7 +31,8 @@ static const JanetAbstractType num_array_type = {
     num_array_gc,
     NULL,
     num_array_get,
-    num_array_put
+    num_array_put,
+    JANET_ATEND_PUT
 };
 
 static Janet num_array_new(int32_t argc, Janet *argv) {
@@ -75,27 +76,33 @@ void num_array_put(void *p, Janet key, Janet value) {
     }
 }
 
+static Janet num_array_length(int32_t argc, Janet *argv) {
+    janet_fixarity(argc, 1);
+    num_array *array = (num_array *)janet_getabstract(argv, 0, &num_array_type);
+    return janet_wrap_number(array->size);
+}
+
 static const JanetMethod methods[] = {
     {"scale", num_array_scale},
     {"sum", num_array_sum},
+    {"length", num_array_length},
     {NULL, NULL}
 };
 
-Janet num_array_get(void *p, Janet key) {
+int num_array_get(void *p, Janet key, Janet *out) {
     size_t index;
-    Janet value;
     num_array *array = (num_array *)p;
     if (janet_checktype(key, JANET_KEYWORD))
-        return janet_getmethod(janet_unwrap_keyword(key), methods);
+        return janet_getmethod(janet_unwrap_keyword(key), methods, out);
     if (!janet_checkint(key))
         janet_panic("expected integer key");
     index = (size_t)janet_unwrap_integer(key);
     if (index >= array->size) {
-        value = janet_wrap_nil();
+        return 0;
     } else {
-        value = janet_wrap_number(array->data[index]);
+        *out = janet_wrap_number(array->data[index]);
     }
-    return value;
+    return 1;
 }
 
 static const JanetReg cfuns[] = {
@@ -109,6 +116,11 @@ static const JanetReg cfuns[] = {
         "(numarray/scale numarray factor)\n\n"
         "scale numarray by factor"
     },
+    {
+        "sum", num_array_sum,
+        "(numarray/sum numarray)\n\n"
+        "sums numarray"
+    },
     {NULL, NULL, NULL}
 };
 

examples/numarray/project.janet

@@ -0,0 +1,7 @@
+(declare-project
+  :name "numarray"
+  :description "Example c lib with abstract type")
+
+(declare-native
+  :name "numarray"
+  :source @["numarray.c"])

examples/numarray/test/numarray_tests.janet

@@ -1,10 +1,4 @@
-(import cook)
-
-(cook/make-native
-    :name "numarray"
-    :source @["numarray.c"])
-
-(import build/numarray :as numarray)
+(import /build/numarray)
 
 (def a (numarray/new 30))
 (print (get a 20))

examples/rtest.janet

@@ -0,0 +1,11 @@
+# How random is the RNG really?
+
+(def counts (seq [_ :range [0 100]] 0))
+
+(for i 0 1000000
+  (let [x (math/random)
+        intrange (math/floor (* 100 x))
+        oldcount (counts intrange)]
+    (put counts intrange (if oldcount (+ 1 oldcount) 1))))
+
+(pp counts)

examples/select.janet

@@ -0,0 +1,23 @@
+(def channels
+  (seq [:repeat 5] (ev/chan 4)))
+
+(defn writer [c]
+  (for i 0 3
+    (def item (string i ":" (mod (hash c) 999)))
+    (ev/sleep 0.1)
+    (print "writer giving item " item " to " c "...")
+    (ev/give c item))
+  (print "Done!"))
+
+(defn reader [name]
+  (forever
+    (def [_ c x] (ev/rselect ;channels))
+    (print "reader " name " got " x " from " c)))
+
+# Readers
+(each letter [:a :b :c :d :e :f :g]
+  (ev/call reader letter))
+
+# Writers
+(each c channels
+  (ev/call writer c))

examples/select2.janet

@@ -0,0 +1,37 @@
+###
+### examples/select2.janet
+###
+### Mix reads and writes in select.
+###
+
+(def c1 (ev/chan 40))
+(def c2 (ev/chan 40))
+(def c3 (ev/chan 40))
+(def c4 (ev/chan 40))
+
+(def c5 (ev/chan 4))
+
+(defn worker
+  [c n x]
+  (forever
+    (ev/sleep n)
+    (ev/give c x)))
+
+(defn writer-worker
+  [c]
+  (forever
+    (ev/sleep 0.2)
+    (print "writing " (ev/take c))))
+
+(ev/call worker c1 1 :item1)
+(ev/sleep 0.2)
+(ev/call worker c2 1 :item2)
+(ev/sleep 0.1)
+(ev/call worker c3 1 :item3)
+(ev/sleep 0.2)
+(ev/call worker c4 1 :item4)
+(ev/sleep 0.1)
+(ev/call worker c4 1 :item5)
+(ev/call writer-worker c5)
+
+(forever (pp (ev/rselect c1 c2 c3 c4 [c5 :thing])))

examples/tarray.janet

@@ -1,83 +0,0 @@
-# naive matrix implementation for testing typed array
-
-(defmacro printf [& xs] ['print ['string/format (splice xs)]])
-
-(defn matrix [nrow ncol] {:nrow nrow :ncol ncol :array (tarray/new :float64 (* nrow ncol))})
-
-(defn matrix/row [mat i]
-  (def {:nrow nrow :ncol ncol :array array} mat)
-  (tarray/new :float64 ncol 1 (* i ncol)  array))
-
-(defn matrix/column [mat j]
-  (def {:nrow nrow :ncol ncol :array array} mat)
-  (tarray/new :float64 nrow ncol j array))
-
-(defn matrix/set [mat i j value]
-  (def {:nrow nrow :ncol ncol :array array} mat)
-  (set (array (+ (* i ncol) j)) value))
-
-(defn matrix/get [mat i j value]
-  (def {:nrow nrow :ncol ncol :array array} mat)
-  (array (+ (* i ncol) j)))
-
-
-# other variants to test rows and cols views
-
-(defn matrix/set* [mat i j value]
-  (set ((matrix/row mat i) j) value))
-
-(defn matrix/set** [mat i j value]
-  (set ((matrix/column mat j) i) value))
-
-
-(defn matrix/get* [mat i j value]
-  ((matrix/row mat i) j))
-
-(defn matrix/get** [mat i j value]
-  ((matrix/column j) i))
-
-
-(defn tarray/print [array]
-  (def size (tarray/length array))
-  (def buf @"")
-  (buffer/format buf "[%2i]" size)
-  (for i 0 size
-       (buffer/format buf " %+6.3f " (array i)))
-  (print buf))
-       
-(defn matrix/print [mat]
-  (def {:nrow nrow :ncol ncol :array tarray} mat)
-  (printf "matrix %iX%i %p" nrow ncol tarray)
-  (for i 0 nrow
-       (tarray/print (matrix/row mat i))))
-
-
-(def nr 5)
-(def nc 4)
-(def A (matrix nr nc))
-
-(loop (i :range (0 nr) j :range (0 nc)) 
-      (matrix/set A i j i))
-(matrix/print A)
-
-(loop (i :range (0 nr) j :range (0 nc)) 
-      (matrix/set* A i j i))
-(matrix/print A)
-
-(loop (i :range (0 nr) j :range (0 nc)) 
-      (matrix/set** A i j i))
-(matrix/print A)
-
-
-(printf "properties:\n%p" (tarray/properties (A :array)))
-(for i 0 nr  
-     (printf "row properties:[%i]\n%p" i (tarray/properties (matrix/row A i))))
-(for i 0 nc  
-     (printf "col properties:[%i]\n%p" i (tarray/properties (matrix/column A i))))
-
-
-
-
-
-
-

examples/tcpclient.janet

@@ -0,0 +1,6 @@
+(with [conn (net/connect "127.0.0.1" "8000")]
+  (printf "Connected to %q!" conn)
+  (:write conn "Echo...")
+  (print "Wrote to connection...")
+  (def res (:read conn 1024))
+  (pp res))

examples/tcpserver.janet

@@ -0,0 +1,20 @@
+(defn handler
+  "Simple handler for connections."
+  [stream]
+  (defer (:close stream)
+    (def id (gensym))
+    (def b @"")
+    (print "Connection " id "!")
+    (while (:read stream 1024 b)
+      (repeat 10 (print "work for " id " ...") (ev/sleep 0.1))
+      (:write stream b)
+      (buffer/clear b))
+    (printf "Done %v!" id)))
+
+# Run server.
+(let [server (net/server "127.0.0.1" "8000")]
+  (print "Starting echo server on 127.0.0.1:8000")
+  (forever
+    (if-let [conn (:accept server)]
+      (ev/call handler conn)
+      (print "no new connections"))))

examples/threaded-channels.janet

@@ -0,0 +1,22 @@
+(def chan (ev/thread-chan 10))
+
+(ev/spawn
+  (ev/sleep 0)
+  (print "started fiber!")
+  (ev/give chan (math/random))
+  (ev/give chan (math/random))
+  (ev/give chan (math/random))
+  (ev/sleep 0.5)
+  (for i 0 10
+    (print "giving to channel...")
+    (ev/give chan (math/random))
+    (ev/sleep 1))
+  (print "finished fiber!")
+  (:close chan))
+
+(ev/do-thread
+  (print "started thread!")
+  (ev/sleep 1)
+  (while (def x (do (print "taking from channel...") (ev/take chan)))
+    (print "got " x " from thread!"))
+  (print "finished thread!"))

examples/udpclient.janet

@@ -0,0 +1,5 @@
+(def conn (net/connect "127.0.0.1" "8009" :datagram))
+(:write conn (string/format "%q" (os/cryptorand 16)))
+(def x (:read conn 1024))
+(pp x)
+

examples/udpserver.janet

@@ -0,0 +1,6 @@
+(def server (net/listen "127.0.0.1" "8009" :datagram))
+(while true
+  (def buf @"")
+  (def who (:recv-from server 1024 buf))
+  (printf "got %q from %v, echoing!" buf who)
+  (:send-to server who buf))

examples/urlloader.janet

@@ -1,10 +1,10 @@
-# An example of using Janet's extensible module system
-# to import files from URL. To try this, run `janet -l examples/urlloader.janet`
-# from the repl, and then:
+# An example of using Janet's extensible module system to import files from
+# URL. To try this, run `janet -l ./examples/urlloader.janet` from the command
+# line, and then at the REPL type:
 #
 # (import https://raw.githubusercontent.com/janet-lang/janet/master/examples/colors.janet :as c)
 #
-# This will import a file using curl. You can then try
+# This will import a file using curl. You can then try:
 #
 # (print (c/color :green "Hello!"))
 #
@@ -13,9 +13,9 @@
 
 (defn- load-url
   [url args]
-  (def f (file/popen (string "curl " url)))
-  (def res (dofile f :source url ;args))
-  (try (file/close f) ([err] nil))
+  (def p (os/spawn ["curl" url "-s"] :p {:out :pipe}))
+  (def res (dofile (p :out) :source url ;args))
+  (:wait p)
   res)
 
 (defn- check-http-url

janet-installer.nsi

@@ -1,162 +0,0 @@
-# Use the modern UI
-!define MULTIUSER_EXECUTIONLEVEL Highest
-!define MULTIUSER_MUI
-!define MULTIUSER_INSTALLMODE_COMMANDLINE
-!include "MultiUser.nsh"
-!include "MUI2.nsh"
-!include ".\tools\EnvVarUpdate.nsh"
-
-# Basics
-Name "Janet"
-OutFile "janet-installer.exe"
-
-# Some Configuration
-!define APPNAME "Janet"
-!define DESCRIPTION "The Janet Programming Language"
-!define HELPURL "http://janet-lang.org"
-
-# MUI Configuration
-!define MUI_ICON "assets\icon.ico"
-!define MUI_UNICON "assets\icon.ico"
-!define MUI_HEADERIMAGE
-!define MUI_HEADERIMAGE_BITMAP "assets\janet-w200.png"
-!define MUI_HEADERIMAGE_RIGHT
-
-# Show a welcome page first
-!insertmacro MUI_PAGE_WELCOME
-
-# License page
-!insertmacro MUI_PAGE_LICENSE "LICENSE"
-
-# Pick Install Directory
-!insertmacro MULTIUSER_PAGE_INSTALLMODE
-!insertmacro MUI_PAGE_DIRECTORY
-
-page instfiles
-
-# Need to set a language.
-!insertmacro MUI_LANGUAGE "English"
- 
-function .onInit
-	setShellVarContext all
-functionEnd
-
-section "install"
-    createDirectory "$INSTDIR\Library"
-    createDirectory "$INSTDIR\C"
-    createDirectory "$INSTDIR\bin"
-	setOutPath $INSTDIR
-    
-    file /oname=bin\janet.exe dist\janet.exe
-    file /oname=logo.ico assets\icon.ico
-    
-    file /oname=Library\cook.janet dist\cook.janet
-    
-    file /oname=C\janet.h dist\janet.h
-    file /oname=C\janetconf.h dist\janetconf.h
-    file /oname=C\janet.lib dist\janet.lib
-    file /oname=C\janet.exp dist\janet.exp
-    file /oname=C\janet.c dist\janet.c
-    
-    file /oname=bin\jpm.janet dist\jpm
-    file /oname=bin\jpm.bat dist\jpm.bat
- 
-	# Uninstaller - See function un.onInit and section "uninstall" for configuration
-	writeUninstaller "$INSTDIR\uninstall.exe"
- 
-	# Start Menu
-	createShortCut "$SMPROGRAMS\Janet.lnk" "$INSTDIR\janet.exe" "" "$INSTDIR\logo.ico"
-    
-    # HKLM (all users) vs HKCU (current user)
-    WriteRegExpandStr HKLM "SYSTEM\CurrentControlSet\Control\Session Manager\Environment" JANET_PATH "$INSTDIR\Library"
-    WriteRegExpandStr HKLM "SYSTEM\CurrentControlSet\Control\Session Manager\Environment" JANET_HEADERPATH "$INSTDIR\C"
-    WriteRegExpandStr HKLM "SYSTEM\CurrentControlSet\Control\Session Manager\Environment" JANET_BINDIR "$INSTDIR\bin"
-
-    WriteRegExpandStr HKCU "Environment" JANET_PATH "$INSTDIR\Library"
-    WriteRegExpandStr HKCU "Environment" JANET_HEADERPATH "$INSTDIR\C"
-    WriteRegExpandStr HKCU "Environment" JANET_BINDIR "$INSTDIR\bin"
-
-    SendMessage ${HWND_BROADCAST} ${WM_WININICHANGE} 0 "STR:Environment" /TIMEOUT=5000
-    
-    # Update path
-    ${EnvVarUpdate} $0 "PATH" "A" "HKCU" "$INSTDIR\bin" ; Append
-    ${EnvVarUpdate} $0 "PATH" "A" "HKLM" "$INSTDIR\bin" ; Append  
- 
-	# Registry information for add/remove programs
-	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Janet" "DisplayName" "Janet"
-	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Janet" "UninstallString" "$INSTDIR\uninstall.exe"
-	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Janet" "QuietUninstallString" "$INSTDIR\uninstall.exe /S"
-	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Janet" "InstallLocation" "$INSTDIR"
-	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Janet" "DisplayIcon" "$INSTDIR\logo.ico"
-	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Janet" "Publisher" "Janet-Lang.org"
-	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Janet" "HelpLink" "${HELPURL}"
-	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Janet" "URLUpdateInfo" "${HELPURL}"
-	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Janet" "URLInfoAbout" "${HELPURL}"
-	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Janet" "DisplayVersion" "0.6.0"
-	WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Janet" "VersionMajor" 0
-	WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Janet" "VersionMinor" 6
-	# There is no option for modifying or repairing the install
-	WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Janet" "NoModify" 1
-	WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Janet" "NoRepair" 1
-	# Set the INSTALLSIZE constant (!defined at the top of this script) so Add/Remove Programs can accurately report the size
-	WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Janet" "EstimatedSize" 1000
-sectionEnd
- 
-# Uninstaller
- 
-function un.onInit
-	SetShellVarContext all
- 
-	#Verify the uninstaller - last chance to back out
-	MessageBox MB_OKCANCEL "Permanantly remove Janet?" IDOK next
-		Abort
-	next:
-functionEnd
- 
-section "uninstall"
- 
-	# Remove Start Menu launcher
-	delete "$SMPROGRAMS\Janet.lnk"
- 
-	# Remove files
-    delete $INSTDIR\logo.ico
-    
-    delete $INSTDIR\C\janet.c
-    delete $INSTDIR\C\janet.h
-    delete $INSTDIR\C\janet.lib
-    delete $INSTDIR\C\janet.exp
-    delete $INSTDIR\C\janetconf.h
-    
-    delete $INSTDIR\bin\jpm.janet
-    delete $INSTDIR\bin\jpm.bat
-    delete $INSTDIR\bin\janet.exe
-
-    delete $INSTDIR\Library\cook.janet
-    
-    # Remove env vars
-
-    DeleteRegValue HKLM "SYSTEM\CurrentControlSet\Control\Session Manager\Environment" JANET_PATH
-    DeleteRegValue HKLM "SYSTEM\CurrentControlSet\Control\Session Manager\Environment" JANET_HEADERPATH
-    DeleteRegValue HKLM "SYSTEM\CurrentControlSet\Control\Session Manager\Environment" JANET_BINDIR
-
-    DeleteRegValue HKCU "Environment" JANET_PATH
-    DeleteRegValue HKCU "Environment" JANET_HEADERPATH
-    DeleteRegValue HKCU "Environment" JANET_BINDIR
-
-    # Unset PATH
-    ${un.EnvVarUpdate} $0 "PATH" "R" "HKCU" "$INSTDIR\bin" ; Remove
-    ${un.EnvVarUpdate} $0 "PATH" "R" "HKLM" "$INSTDIR\bin" ; Remove 
-    
-    # make sure windows knows about the change
-    SendMessage ${HWND_BROADCAST} ${WM_WININICHANGE} 0 "STR:Environment" /TIMEOUT=5000
-     
-	# Always delete uninstaller as the last action
-	delete $INSTDIR\uninstall.exe
- 
-    rmDir "$INSTDIR\Library"
-	rmDir "$INSTDIR\C"
-    rmDir "$INSTDIR\bin"
- 
-	# Remove uninstaller information from the registry
-	DeleteRegKey HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Janet"
-sectionEnd

janet.1

@@ -3,18 +3,21 @@
 janet \- run the Janet language abstract machine
 .SH SYNOPSIS
 .B janet
-[\fB\-hvsrpnqk\fR]
+[\fB\-hvsrpnqik\fR]
 [\fB\-e\fR \fISOURCE\fR]
+[\fB\-E\fR \fISOURCE ...ARGUMENTS\fR]
 [\fB\-l\fR \fIMODULE\fR]
 [\fB\-m\fR \fIPATH\fR]
 [\fB\-c\fR \fIMODULE JIMAGE\fR]
+[\fB\-w\fR \fILEVEL\fR]
+[\fB\-x\fR \fILEVEL\fR]
 [\fB\-\-\fR]
-.IR script
-.IR args ...
+.BR script
+.BR args ...
 .SH DESCRIPTION
 Janet is a functional and imperative programming language and bytecode interpreter.
-It is a modern lisp, but lists are replaced by other data structures with better utility
-and performance (arrays, tables, structs, tuples). The language also bridging bridging
+It is a Lisp-like language, but lists are replaced by other data structures
+(arrays, tables, structs, tuples). The language also features bridging
 to native code written in C, meta-programming with macros, and bytecode assembly.
 
 There is a repl for trying out the language, as well as the ability to run script files.
@@ -25,6 +28,118 @@ Implemented in mostly standard C99, Janet runs on Windows, Linux and macOS.
 The few features that are not standard C99 (dynamic library loading, compiler
 specific optimizations), are fairly straight forward. Janet can be easily ported to
 most new platforms.
+
+.SH REPL KEY-BINDINGS
+
+.TP 16
+.BR Home
+Move cursor to the beginning of input line.
+
+.TP 16
+.BR End
+Move cursor to the end of input line.
+
+.TP 16
+.BR Left/Right
+Move cursor in input line.
+
+.TP 16
+.BR Up/Down
+Go backwards and forwards through history.
+
+.TP 16
+.BR Tab
+Complete current symbol, or show available completions.
+
+.TP 16
+.BR Delete
+Delete one character after the cursor.
+
+.TP 16
+.BR Backspace
+Delete one character before the cursor.
+
+.TP 16
+.BR Ctrl\-A
+Move cursor to the beginning of input line.
+
+.TP 16
+.BR Ctrl\-B
+Move cursor one character to the left.
+
+.TP 16
+.BR Ctrl\-D
+If on a newline, indicate end of stream and exit the repl.
+
+.TP 16
+.BR Ctrl\-E
+Move cursor to the end of input line.
+
+.TP 16
+.BR Ctrl\-F
+Move cursor one character to the right.
+
+.TP 16
+.BR Ctrl\-H
+Delete one character before the cursor.
+
+.TP 16
+.BR Ctrl\-K
+Delete everything after the cursor on the input line.
+
+.TP 16
+.BR Ctrl\-L
+Clear the screen.
+
+.TP 16
+.BR Ctrl\-N/Ctrl\-P
+Go forwards and backwards through history.
+
+.TP 16
+.BR Ctrl\-U
+Delete everything before the cursor on the input line.
+
+.TP 16
+.BR Ctrl\-W
+Delete one word before the cursor.
+
+.TP 16
+.BR Ctrl\-G
+Show documentation for the current symbol under the cursor.
+
+.TP 16
+.BR Ctrl\-Q
+Clear the current command, including already typed lines.
+
+.TP 16
+.BR Alt\-B/Alt\-F
+Move cursor backwards and forwards one word.
+
+.TP 16
+.BR Alt\-D
+Delete one word after the cursor.
+
+.TP 16
+.BR Alt\-,
+Go to earliest item in history.
+
+.TP 16
+.BR Alt\-.
+Go to last item in history.
+
+.LP
+
+The repl keybindings are loosely based on a subset of GNU readline, although
+Janet does not use GNU readline internally for the repl. It is a limited
+substitute for GNU readline, and does not handle
+utf-8 input or other mutlibyte input well.
+
+To disable the built-in repl input handling, pass the \fB\-s\fR option to Janet, and
+use a program like rlwrap with Janet to provide input.
+
+For key bindings that operate on words, a word is considered to be a sequence
+of characters that does not contain whitespace.
+
 .SH DOCUMENTATION
 
 For more complete API documentation, run a REPL (Read Eval Print Loop), and use the doc macro to
@@ -48,6 +163,17 @@ Read raw input from stdin and forgo prompt history and other readline-like featu
 Execute a string of Janet source. Source code is executed in the order it is encountered, so earlier
 arguments are executed before later ones.
 
+.TP
+.BR \-E\ code arguments
+Execute a single Janet expression as a Janet short-fn, passing the remaining command line arguments to the expression. This allows
+more concise one-liners with command line arguments.
+
+.TP
+.BR \-d
+Enable debug mode. On all terminating signals as well the debug signal, this will
+cause the debugger to come up in the REPL. Same as calling (setdyn :debug true) in a
+default repl.
+
 .TP
 .BR \-n
 Disable ANSI colors in the repl. Has no effect if no repl is run.
@@ -57,6 +183,10 @@ Disable ANSI colors in the repl. Has no effect if no repl is run.
 Open a REPL (Read Eval Print Loop) after executing all sources. By default, if Janet is called with no
 arguments, a REPL is opened.
 
+.TP
+.BR \-R
+If using the REPL, disable loading the user profile from the JANET_PROFILE environment variable.
+
 .TP
 .BR \-p
 Turn on the persistent flag. By default, when Janet is executing commands from a file and encounters an error,
@@ -65,7 +195,7 @@ after an error. Persistent mode can be good for debugging and testing.
 
 .TP
 .BR \-q
-Quiet output. Don't print a repl prompt or expression results to stdout.
+Hide the logo in the repl.
 
 .TP
 .BR \-k
@@ -73,7 +203,7 @@ Don't execute a script, only compile it to check for errors. Useful for linting
 
 .TP
 .BR \-m\ syspath
-Set the variable module/*syspath* to the string syspath so that Janet will load system modules
+Set the dynamic binding :syspath to the string syspath so that Janet will load system modules
 from a directory different than the default. The default is set when Janet is built, and defaults to
 /usr/local/lib/janet on Linux/Posix, and C:/Janet/Library on Windows. This option supersedes JANET_PATH.
 
@@ -84,11 +214,27 @@ Source should be a path to the Janet module to compile, and output should be the
 resulting image. Output should usually end with the .jimage extension.
 
 .TP
-.BR \-l\ path
-Load a Janet file before running a script or repl. Multiple files can be loaded
+.BR \-i
+When this flag is passed, a script passed to the interpreter will be treated as a janet image file
+rather than a janet source file.
+
+.TP
+.BR \-l\ lib
+Import a Janet module before running a script or repl. Multiple files can be loaded
 in this manner, and exports from each file will be made available to the script
 or repl.
-
+.TP
+.BR \-w\ level
+Set the warning linting level for Janet.
+This linting level should be one of :relaxed, :none, :strict, :normal, or a
+Janet number. Any linting message that is of a greater lint level than this setting will be displayed as
+a warning, but not stop compilation or execution.
+.TP
+.BR \-x\ level
+Set the error linting level for Janet.
+This linting level should be one of :relaxed, :none, :strict, :normal, or a
+Janet number. Any linting message that is of a greater lint level will cause a compilation error
+and stop compilation.
 .TP
 .BR \-\-
 Stop parsing command line arguments. All arguments after this one will be considered file names
@@ -103,5 +249,19 @@ find native and source code modules. If no JANET_PATH is set, Janet will look in
 the default location set at compile time.
 .RE
 
+.B JANET_PROFILE
+.RS
+Path to a profile file that the interpreter will load before entering the REPL. This profile file will
+not run for scripts, though. This behavior can be disabled with the -R option.
+.RE
+
+.B JANET_HASHSEED
+.RS
+To disable randomization of Janet's PRF on start up, one can set this variable. This can have the
+effect of making programs deterministic that otherwise would depend on the random seed chosen at program start.
+This variable does nothing in the default configuration of Janet, as PRF is disabled by default. Also, JANET_REDUCED_OS
+cannot be defined for this variable to have an effect.
+.RE
+
 .SH AUTHOR
 Written by Calvin Rose <calsrose@gmail.com>

meson.build

@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Calvin Rose and contributors
+# Copyright (c) 2021 Calvin Rose and contributors
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to
@@ -18,7 +18,9 @@
 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 # IN THE SOFTWARE.
 
-project('janet', 'c', default_options : ['c_std=c99'])
+project('janet', 'c',
+  default_options : ['c_std=c99', 'build.c_std=c99', 'b_lundef=false', 'default_library=both'],
+  version : '1.21.0')
 
 # Global settings
 janet_path = join_paths(get_option('prefix'), get_option('libdir'), 'janet')
@@ -28,24 +30,68 @@ header_path = join_paths(get_option('prefix'), get_option('includedir'), 'janet'
 cc = meson.get_compiler('c')
 m_dep = cc.find_library('m', required : false)
 dl_dep = cc.find_library('dl', required : false)
+android_spawn_dep = cc.find_library('android-spawn', required : false)
+thread_dep = dependency('threads')
 
-# Some options
-add_project_link_arguments('-rdynamic', language : 'c')
+# Link options
+if get_option('default_library') != 'static' and build_machine.system() != 'windows'
+    add_project_link_arguments('-rdynamic', language : 'c')
+endif
+
+# Generate custom janetconf.h
+conf = configuration_data()
+version_parts = meson.project_version().split('.')
+last_parts = version_parts[2].split('-')
+if last_parts.length() > 1
+  conf.set_quoted('JANET_VERSION_EXTRA', '-' + last_parts[1])
+else
+  conf.set_quoted('JANET_VERSION_EXTRA', '')
+endif
+conf.set('JANET_VERSION_MAJOR', version_parts[0].to_int())
+conf.set('JANET_VERSION_MINOR', version_parts[1].to_int())
+conf.set('JANET_VERSION_PATCH', last_parts[0].to_int())
+conf.set_quoted('JANET_VERSION', meson.project_version())
+# Use options
+conf.set_quoted('JANET_BUILD', get_option('git_hash'))
+conf.set('JANET_NO_NANBOX', not get_option('nanbox'))
+conf.set('JANET_SINGLE_THREADED', get_option('single_threaded'))
+conf.set('JANET_NO_DYNAMIC_MODULES', not get_option('dynamic_modules'))
+conf.set('JANET_NO_DOCSTRINGS', not get_option('docstrings'))
+conf.set('JANET_NO_SOURCEMAPS', not get_option('sourcemaps'))
+conf.set('JANET_NO_ASSEMBLER', not get_option('assembler'))
+conf.set('JANET_NO_PEG', not get_option('peg'))
+conf.set('JANET_NO_NET', not get_option('net'))
+conf.set('JANET_NO_EV', not get_option('ev') or get_option('single_threaded'))
+conf.set('JANET_REDUCED_OS', get_option('reduced_os'))
+conf.set('JANET_NO_INT_TYPES', not get_option('int_types'))
+conf.set('JANET_PRF', get_option('prf'))
+conf.set('JANET_RECURSION_GUARD', get_option('recursion_guard'))
+conf.set('JANET_MAX_PROTO_DEPTH', get_option('max_proto_depth'))
+conf.set('JANET_MAX_MACRO_EXPAND', get_option('max_macro_expand'))
+conf.set('JANET_STACK_MAX', get_option('stack_max'))
+conf.set('JANET_NO_UMASK', not get_option('umask'))
+conf.set('JANET_NO_REALPATH', not get_option('realpath'))
+conf.set('JANET_NO_PROCESSES', not get_option('processes'))
+conf.set('JANET_SIMPLE_GETLINE', get_option('simple_getline'))
+conf.set('JANET_EV_NO_EPOLL', not get_option('epoll'))
+conf.set('JANET_EV_NO_KQUEUE', not get_option('kqueue'))
+conf.set('JANET_NO_INTERPRETER_INTERRUPT', not get_option('interpreter_interrupt'))
+if get_option('os_name') != ''
+  conf.set('JANET_OS_NAME', get_option('os_name'))
+endif
+if get_option('arch_name') != ''
+  conf.set('JANET_ARCH_NAME', get_option('arch_name'))
+endif
+jconf = configure_file(output : 'janetconf.h',
+  configuration : conf)
 
 # Include directories
-incdir = include_directories('src/include')
-
-# Building generated sources
-xxd = executable('xxd', 'tools/xxd.c')
-gen = generator(xxd,
-  output : '@BASENAME@.gen.c',
-  arguments : ['@INPUT@', '@OUTPUT@', '@EXTRA_ARGS@'])
-boot_gen = gen.process('src/boot/boot.janet', extra_args: 'janet_gen_boot')
-init_gen = gen.process('src/mainclient/init.janet', extra_args: 'janet_gen_init')
+incdir = include_directories(['src/include', '.'])
 
 # Order is important here, as some headers
 # depend on other headers for the amalg target
 core_headers = [
+  'src/core/features.h',
   'src/core/util.h',
   'src/core/state.h',
   'src/core/gc.h',
@@ -69,12 +115,14 @@ core_src = [
   'src/core/corelib.c',
   'src/core/debug.c',
   'src/core/emit.c',
+  'src/core/ev.c',
   'src/core/fiber.c',
   'src/core/gc.c',
   'src/core/inttypes.c',
   'src/core/io.c',
   'src/core/marsh.c',
   'src/core/math.c',
+  'src/core/net.c',
   'src/core/os.c',
   'src/core/parse.c',
   'src/core/peg.c',
@@ -82,13 +130,13 @@ core_src = [
   'src/core/regalloc.c',
   'src/core/run.c',
   'src/core/specials.c',
+  'src/core/state.c',
   'src/core/string.c',
   'src/core/strtod.c',
   'src/core/struct.c',
   'src/core/symcache.c',
   'src/core/table.c',
   'src/core/tuple.c',
-  'src/core/typedarray.c',
   'src/core/util.c',
   'src/core/value.c',
   'src/core/vector.c',
@@ -106,75 +154,112 @@ boot_src = [
 ]
 
 mainclient_src = [
-  'src/mainclient/line.c',
-  'src/mainclient/main.c'
+  'src/mainclient/shell.c'
 ]
 
 # Build boot binary
-janet_boot = executable('janet-boot', core_src, boot_src, boot_gen,
+janet_boot = executable('janet-boot', core_src, boot_src,
   include_directories : incdir,
   c_args : '-DJANET_BOOTSTRAP',
-  dependencies : [m_dep, dl_dep])
+  dependencies : [m_dep, dl_dep, thread_dep, android_spawn_dep],
+  native : true)
 
-# Build core image
-core_image = custom_target('core_image',
+# Build janet.c
+janetc = custom_target('janetc',
   input : [janet_boot],
-  output : 'core_image.gen.c',
-  command : [janet_boot, '@OUTPUT@', 'JANET_PATH', janet_path, 'JANET_HEADERPATH', header_path])
+  output : 'janet.c',
+  capture : true,
+  command : [
+    janet_boot, meson.current_source_dir(),
+    'JANET_PATH', janet_path
+  ])
 
-libjanet = shared_library('janet', core_src, core_image,
+janet_dependencies = [m_dep, dl_dep, android_spawn_dep]
+if not get_option('single_threaded')
+  janet_dependencies += thread_dep
+endif
+
+libjanet = library('janet', janetc,
   include_directories : incdir,
-  dependencies : [m_dep, dl_dep],
+  dependencies : janet_dependencies,
+  version: meson.project_version(),
+  soversion: version_parts[0] + '.' + version_parts[1],
   install : true)
-janet_mainclient = executable('janet', core_src, core_image, init_gen, mainclient_src,
+
+# Extra c flags - adding -fvisibility=hidden matches the Makefile and
+# shaves off about 10k on linux x64, likely similar on other platforms.
+if cc.has_argument('-fvisibility=hidden')
+  extra_cflags = ['-fvisibility=hidden']
+else
+  extra_cflags = []
+endif
+janet_mainclient = executable('janet', janetc, mainclient_src,
   include_directories : incdir,
-  dependencies : [m_dep, dl_dep],
+  dependencies : janet_dependencies,
+  c_args : extra_cflags,
   install : true)
-janet_jpm = install_data('tools/jpm', install_dir : 'bin')
+
+if meson.is_cross_build()
+  native_cc = meson.get_compiler('c', native: true)
+  if native_cc.has_argument('-fvisibility=hidden')
+    extra_native_cflags = ['-fvisibility=hidden']
+  else
+    extra_native_cflags = []
+  endif
+  janet_nativeclient = executable('janet-native', janetc, mainclient_src,
+    include_directories : incdir,
+    dependencies : janet_dependencies,
+    c_args : extra_native_cflags,
+    native : true)
+else
+  janet_nativeclient = janet_mainclient
+endif
 
 # Documentation
 docs = custom_target('docs',
   input : ['tools/gendoc.janet'],
   output : ['doc.html'],
   capture : true,
-  command : [janet_mainclient, '@INPUT@'])
-
-# Amalgamated source
-amalg = custom_target('amalg',
-  input : ['tools/amalg.janet', core_headers, core_src, core_image],
-  output : ['janet.c'],
-  capture : true,
-  command : [janet_mainclient, '@INPUT@'])
-
-# Amalgamated client
-janet_amalgclient = executable('janet-amalg', amalg, init_gen, mainclient_src,
-  include_directories : incdir,
-  dependencies : [m_dep, dl_dep],
-  build_by_default : false)
+  command : [janet_nativeclient, '@INPUT@'])
 
 # Tests
 test_files = [
-  'test/suite0.janet',
-  'test/suite1.janet',
-  'test/suite2.janet',
-  'test/suite3.janet',
-  'test/suite4.janet',
-  'test/suite5.janet',
-  'test/suite6.janet'
+  'test/suite0000.janet',
+  'test/suite0001.janet',
+  'test/suite0002.janet',
+  'test/suite0003.janet',
+  'test/suite0004.janet',
+  'test/suite0005.janet',
+  'test/suite0006.janet',
+  'test/suite0007.janet',
+  'test/suite0008.janet',
+  'test/suite0009.janet',
+  'test/suite0010.janet'
 ]
 foreach t : test_files
-  test(t, janet_mainclient, args : files([t]), workdir : meson.current_source_dir())
+  test(t, janet_nativeclient, args : files([t]), workdir : meson.current_source_dir())
 endforeach
 
 # Repl
-run_target('repl', command : [janet_mainclient])
+run_target('repl', command : [janet_nativeclient])
+
+# For use as meson subproject (wrap)
+janet_dep = declare_dependency(include_directories : incdir,
+  link_with : libjanet)
+
+# pkgconfig
+pkg = import('pkgconfig')
+pkg.generate(libjanet,
+  subdirs: 'janet',
+  description: 'Library for the Janet programming language.')
 
 # Installation
 install_man('janet.1')
-install_headers('src/include/janet.h', 'src/include/janetconf.h', subdir: 'janet')
-janet_libs = [
-  'tools/bars.janet',
-  'tools/cook.janet',
-  'tools/highlight.janet'
-]
-install_data(sources : janet_libs, install_dir : janet_path)
+install_data(sources : ['tools/.keep'], install_dir : join_paths(get_option('libdir'), 'janet'))
+patched_janet = custom_target('patched-janeth',
+  input : ['tools/patch-header.janet', 'src/include/janet.h', jconf],
+  install : true,
+  install_dir : join_paths(get_option('includedir'), 'janet'),
+  build_by_default : true,
+  output : ['janet.h'],
+  command : [janet_nativeclient, '@INPUT@', '@OUTPUT@'])

meson_options.txt

@@ -0,0 +1,29 @@
+option('git_hash', type : 'string', value : 'meson')
+
+option('single_threaded', type : 'boolean', value : false)
+option('nanbox', type : 'boolean', value : true)
+option('dynamic_modules', type : 'boolean', value : true)
+option('docstrings', type : 'boolean', value : true)
+option('sourcemaps', type : 'boolean', value : true)
+option('reduced_os', type : 'boolean', value : false)
+option('assembler', type : 'boolean', value : true)
+option('peg', type : 'boolean', value : true)
+option('int_types', type : 'boolean', value : true)
+option('prf', type : 'boolean', value : false)
+option('net', type : 'boolean', value : true)
+option('ev', type : 'boolean', value : true)
+option('processes', type : 'boolean', value : true)
+option('umask', type : 'boolean', value : true)
+option('realpath', type : 'boolean', value : true)
+option('simple_getline', type : 'boolean', value : false)
+option('epoll', type : 'boolean', value : false)
+option('kqueue', type : 'boolean', value : false)
+option('interpreter_interrupt', type : 'boolean', value : false)
+
+option('recursion_guard', type : 'integer', min : 10, max : 8000, value : 1024)
+option('max_proto_depth', type : 'integer', min : 10, max : 8000, value : 200)
+option('max_macro_expand', type : 'integer', min : 1, max : 8000, value : 200)
+option('stack_max', type : 'integer', min : 8096, max : 0x7fffffff, value : 0x7fffffff)
+
+option('arch_name', type : 'string', value: '')
+option('os_name', type : 'string', value: '')

src/boot/array_test.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to

src/boot/boot.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -23,6 +23,13 @@
 #include <janet.h>
 #include "tests.h"
 
+#ifdef JANET_WINDOWS
+#include <direct.h>
+#define chdir(x) _chdir(x)
+#else
+#include <unistd.h>
+#endif
+
 extern const unsigned char *janet_gen_boot;
 extern int32_t janet_gen_boot_size;
 
@@ -50,10 +57,55 @@ int main(int argc, const char **argv) {
     JanetArray *args = janet_array(argc);
     for (int i = 0; i < argc; i++)
         janet_array_push(args, janet_cstringv(argv[i]));
-    janet_def(env, "process/args", janet_wrap_array(args), "Command line arguments.");
+    janet_def(env, "boot/args", janet_wrap_array(args), "Command line arguments.");
+
+    /* Add in options from janetconf.h so boot.janet can configure the image as needed. */
+    JanetTable *opts = janet_table(0);
+#ifdef JANET_NO_DOCSTRINGS
+    janet_table_put(opts, janet_ckeywordv("no-docstrings"), janet_wrap_true());
+#endif
+#ifdef JANET_NO_SOURCEMAPS
+    janet_table_put(opts, janet_ckeywordv("no-sourcemaps"), janet_wrap_true());
+#endif
+    janet_def(env, "boot/config", janet_wrap_table(opts), "Boot options");
 
     /* Run bootstrap script to generate core image */
-    status = janet_dobytes(env, janet_gen_boot, janet_gen_boot_size, "boot.janet", NULL);
+    const char *boot_filename;
+#ifdef JANET_NO_SOURCEMAPS
+    boot_filename = NULL;
+#else
+    boot_filename = "boot.janet";
+#endif
+
+    int chdir_status = chdir(argv[1]);
+    if (chdir_status) {
+        fprintf(stderr, "Could not change to directory %s\n", argv[1]);
+        exit(1);
+    }
+
+    FILE *boot_file = fopen("src/boot/boot.janet", "rb");
+    if (NULL == boot_file) {
+        fprintf(stderr, "Could not open src/boot/boot.janet\n");
+        exit(1);
+    }
+
+    /* Slurp file into buffer */
+    fseek(boot_file, 0, SEEK_END);
+    size_t boot_size = ftell(boot_file);
+    fseek(boot_file, 0, SEEK_SET);
+    unsigned char *boot_buffer = janet_malloc(boot_size);
+    if (NULL == boot_buffer) {
+        fprintf(stderr, "Failed to allocate boot buffer\n");
+        exit(1);
+    }
+    if (!fread(boot_buffer, 1, boot_size, boot_file)) {
+        fprintf(stderr, "Failed to read into boot buffer\n");
+        exit(1);
+    }
+    fclose(boot_file);
+
+    status = janet_dobytes(env, boot_buffer, (int32_t) boot_size, boot_filename, NULL);
+    janet_free(boot_buffer);
 
     /* Deinitialize vm */
     janet_deinit();

src/boot/buffer_test.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to

src/boot/number_test.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to

src/boot/system_test.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -23,6 +23,7 @@
 #include <janet.h>
 #include <assert.h>
 #include <stdio.h>
+#include <math.h>
 
 #include "tests.h"
 
@@ -44,11 +45,31 @@ int system_test() {
     assert(janet_equals(janet_wrap_integer(INT32_MIN), janet_wrap_integer(INT32_MIN)));
     assert(janet_equals(janet_wrap_number(1.4), janet_wrap_number(1.4)));
     assert(janet_equals(janet_wrap_number(3.14159265), janet_wrap_number(3.14159265)));
+#ifdef NAN
+    assert(janet_checktype(janet_wrap_number(NAN), JANET_NUMBER));
+#else
+    assert(janet_checktype(janet_wrap_number(0.0 / 0.0), JANET_NUMBER));
+#endif
 
     assert(NULL != &janet_wrap_nil);
 
     assert(janet_equals(janet_cstringv("a string."), janet_cstringv("a string.")));
     assert(janet_equals(janet_csymbolv("sym"), janet_csymbolv("sym")));
 
+    Janet *t1 = janet_tuple_begin(3);
+    t1[0] = janet_wrap_nil();
+    t1[1] = janet_wrap_integer(4);
+    t1[2] = janet_cstringv("hi");
+    Janet tuple1 = janet_wrap_tuple(janet_tuple_end(t1));
+
+    Janet *t2 = janet_tuple_begin(3);
+    t2[0] = janet_wrap_nil();
+    t2[1] = janet_wrap_integer(4);
+    t2[2] = janet_cstringv("hi");
+    Janet tuple2 = janet_wrap_tuple(janet_tuple_end(t2));
+
+    assert(janet_equals(tuple1, tuple2));
+
+
     return 0;
 }

src/boot/table_test.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -61,5 +61,11 @@ int table_test() {
     assert(janet_equals(janet_table_get(t2, janet_csymbolv("t2key1")), janet_wrap_integer(10)));
     assert(janet_equals(janet_table_get(t2, janet_csymbolv("t2key2")), janet_wrap_integer(100)));
 
+    assert(t2->count == 4);
+    assert(janet_equals(janet_table_remove(t2, janet_csymbolv("t2key1")), janet_wrap_integer(10)));
+    assert(t2->count == 3);
+    assert(janet_equals(janet_table_remove(t2, janet_csymbolv("t2key2")), janet_wrap_integer(100)));
+    assert(t2->count == 2);
+
     return 0;
 }

src/conf/janetconf.h

@@ -0,0 +1,64 @@
+/* This will be generated by the build system if this file is not used */
+
+#ifndef JANETCONF_H
+#define JANETCONF_H
+
+#define JANET_VERSION_MAJOR 1
+#define JANET_VERSION_MINOR 21
+#define JANET_VERSION_PATCH 1
+#define JANET_VERSION_EXTRA ""
+#define JANET_VERSION "1.21.1"
+
+/* #define JANET_BUILD "local" */
+
+/* These settings all affect linking, so use cautiously. */
+/* #define JANET_SINGLE_THREADED */
+/* #define JANET_NO_DYNAMIC_MODULES */
+/* #define JANET_NO_NANBOX */
+/* #define JANET_API __attribute__((visibility ("default"))) */
+
+/* These settings should be specified before amalgamation is
+ * built. Any build with these set should be considered non-standard, and
+ * certain Janet libraries should be expected not to work. */
+/* #define JANET_NO_DOCSTRINGS */
+/* #define JANET_NO_SOURCEMAPS */
+/* #define JANET_REDUCED_OS */
+/* #define JANET_NO_PROCESSES */
+/* #define JANET_NO_ASSEMBLER */
+/* #define JANET_NO_PEG */
+/* #define JANET_NO_NET */
+/* #define JANET_NO_INT_TYPES */
+/* #define JANET_NO_EV */
+/* #define JANET_NO_REALPATH */
+/* #define JANET_NO_SYMLINKS */
+/* #define JANET_NO_UMASK */
+/* #define JANET_NO_THREADS */
+
+/* Other settings */
+/* #define JANET_DEBUG */
+/* #define JANET_PRF */
+/* #define JANET_NO_UTC_MKTIME */
+/* #define JANET_OUT_OF_MEMORY do { printf("janet out of memory\n"); exit(1); } while (0) */
+/* #define JANET_EXIT(msg) do { printf("C assert failed executing janet: %s\n", msg); exit(1); } while (0) */
+/* #define JANET_TOP_LEVEL_SIGNAL(msg) call_my_function((msg), stderr) */
+/* #define JANET_RECURSION_GUARD 1024 */
+/* #define JANET_MAX_PROTO_DEPTH 200 */
+/* #define JANET_MAX_MACRO_EXPAND 200 */
+/* #define JANET_STACK_MAX 16384 */
+/* #define JANET_OS_NAME my-custom-os */
+/* #define JANET_ARCH_NAME pdp-8 */
+/* #define JANET_EV_NO_EPOLL */
+/* #define JANET_EV_NO_KQUEUE */
+/* #define JANET_NO_INTERPRETER_INTERRUPT */
+
+/* Custom vm allocator support */
+/* #include <mimalloc.h> */
+/* #define janet_malloc(X) mi_malloc((X)) */
+/* #define janet_realloc(X, Y) mi_realloc((X), (Y)) */
+/* #define janet_calloc(X, Y) mi_calloc((X), (Y)) */
+/* #define janet_free(X) mi_free((X)) */
+
+/* Main client settings, does not affect library code */
+/* #define JANET_SIMPLE_GETLINE */
+
+#endif /* end of include guard: JANETCONF_H */

src/core/abstract.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,15 +21,128 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "gc.h"
+#include "state.h"
+#ifdef JANET_EV
+#ifdef JANET_WINDOWS
+#include <windows.h>
+#endif
+#endif
 #endif
 
 /* Create new userdata */
-void *janet_abstract(const JanetAbstractType *atype, size_t size) {
-    JanetAbstractHead *header = janet_gcalloc(JANET_MEMORY_ABSTRACT,
+void *janet_abstract_begin(const JanetAbstractType *atype, size_t size) {
+    JanetAbstractHead *header = janet_gcalloc(JANET_MEMORY_NONE,
                                 sizeof(JanetAbstractHead) + size);
     header->size = size;
     header->type = atype;
     return (void *) & (header->data);
 }
+
+void *janet_abstract_end(void *x) {
+    janet_gc_settype((void *)(janet_abstract_head(x)), JANET_MEMORY_ABSTRACT);
+    return x;
+}
+
+void *janet_abstract(const JanetAbstractType *atype, size_t size) {
+    return janet_abstract_end(janet_abstract_begin(atype, size));
+}
+
+#ifdef JANET_EV
+
+/*
+ * Threaded abstracts
+ */
+
+void *janet_abstract_begin_threaded(const JanetAbstractType *atype, size_t size) {
+    JanetAbstractHead *header = janet_malloc(sizeof(JanetAbstractHead) + size);
+    if (NULL == header) {
+        JANET_OUT_OF_MEMORY;
+    }
+    janet_vm.next_collection += size + sizeof(JanetAbstractHead);
+    header->gc.flags = JANET_MEMORY_THREADED_ABSTRACT;
+    header->gc.data.next = NULL; /* Clear memory for address sanitizers */
+    header->gc.data.refcount = 1;
+    header->size = size;
+    header->type = atype;
+    void *abstract = (void *) & (header->data);
+    janet_table_put(&janet_vm.threaded_abstracts, janet_wrap_abstract(abstract), janet_wrap_false());
+    return abstract;
+}
+
+void *janet_abstract_end_threaded(void *x) {
+    janet_gc_settype((void *)(janet_abstract_head(x)), JANET_MEMORY_THREADED_ABSTRACT);
+    return x;
+}
+
+void *janet_abstract_threaded(const JanetAbstractType *atype, size_t size) {
+    return janet_abstract_end_threaded(janet_abstract_begin_threaded(atype, size));
+}
+
+/* Refcounting primitives and sync primitives */
+
+#ifdef JANET_WINDOWS
+
+static int32_t janet_incref(JanetAbstractHead *ab) {
+    return InterlockedIncrement(&ab->gc.data.refcount);
+}
+
+static int32_t janet_decref(JanetAbstractHead *ab) {
+    return InterlockedDecrement(&ab->gc.data.refcount);
+}
+
+void janet_os_mutex_init(JanetOSMutex *mutex) {
+    InitializeCriticalSection((CRITICAL_SECTION *) mutex);
+}
+
+void janet_os_mutex_deinit(JanetOSMutex *mutex) {
+    DeleteCriticalSection((CRITICAL_SECTION *) mutex);
+}
+
+void janet_os_mutex_lock(JanetOSMutex *mutex) {
+    EnterCriticalSection((CRITICAL_SECTION *) mutex);
+}
+
+void janet_os_mutex_unlock(JanetOSMutex *mutex) {
+    LeaveCriticalSection((CRITICAL_SECTION *) mutex);
+}
+
+#else
+
+static int32_t janet_incref(JanetAbstractHead *ab) {
+    return __atomic_add_fetch(&ab->gc.data.refcount, 1, __ATOMIC_RELAXED);
+}
+
+static int32_t janet_decref(JanetAbstractHead *ab) {
+    return __atomic_add_fetch(&ab->gc.data.refcount, -1, __ATOMIC_RELAXED);
+}
+
+void janet_os_mutex_init(JanetOSMutex *mutex) {
+    pthread_mutex_init(mutex, NULL);
+}
+
+void janet_os_mutex_deinit(JanetOSMutex *mutex) {
+    pthread_mutex_destroy(mutex);
+}
+
+void janet_os_mutex_lock(JanetOSMutex *mutex) {
+    pthread_mutex_lock(mutex);
+}
+
+void janet_os_mutex_unlock(JanetOSMutex *mutex) {
+    pthread_mutex_unlock(mutex);
+}
+
+#endif
+
+int32_t janet_abstract_incref(void *abst) {
+    return janet_incref(janet_abstract_head(abst));
+}
+
+int32_t janet_abstract_decref(void *abst) {
+    return janet_decref(janet_abstract_head(abst));
+}
+
+#endif

src/core/array.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,18 +21,22 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "gc.h"
 #include "util.h"
+#include "state.h"
 #endif
 
 #include <string.h>
 
-/* Initializes an array */
-JanetArray *janet_array_init(JanetArray *array, int32_t capacity) {
+/* Creates a new array */
+JanetArray *janet_array(int32_t capacity) {
+    JanetArray *array = janet_gcalloc(JANET_MEMORY_ARRAY, sizeof(JanetArray));
     Janet *data = NULL;
     if (capacity > 0) {
-        data = (Janet *) malloc(sizeof(Janet) * capacity);
+        janet_vm.next_collection += capacity * sizeof(Janet);
+        data = (Janet *) janet_malloc(sizeof(Janet) * (size_t) capacity);
         if (NULL == data) {
             JANET_OUT_OF_MEMORY;
         }
@@ -43,26 +47,16 @@ JanetArray *janet_array_init(JanetArray *array, int32_t capacity) {
     return array;
 }
 
-void janet_array_deinit(JanetArray *array) {
-    free(array->data);
-}
-
-/* Creates a new array */
-JanetArray *janet_array(int32_t capacity) {
-    JanetArray *array = janet_gcalloc(JANET_MEMORY_ARRAY, sizeof(JanetArray));
-    return janet_array_init(array, capacity);
-}
-
 /* Creates a new array from n elements. */
 JanetArray *janet_array_n(const Janet *elements, int32_t n) {
     JanetArray *array = janet_gcalloc(JANET_MEMORY_ARRAY, sizeof(JanetArray));
     array->capacity = n;
     array->count = n;
-    array->data = malloc(sizeof(Janet) * n);
+    array->data = janet_malloc(sizeof(Janet) * (size_t) n);
     if (!array->data) {
         JANET_OUT_OF_MEMORY;
     }
-    memcpy(array->data, elements, sizeof(Janet) * n);
+    safe_memcpy(array->data, elements, sizeof(Janet) * n);
     return array;
 }
 
@@ -71,11 +65,14 @@ void janet_array_ensure(JanetArray *array, int32_t capacity, int32_t growth) {
     Janet *newData;
     Janet *old = array->data;
     if (capacity <= array->capacity) return;
-    capacity *= growth;
-    newData = realloc(old, capacity * sizeof(Janet));
+    int64_t new_capacity = ((int64_t) capacity) * growth;
+    if (new_capacity > INT32_MAX) new_capacity = INT32_MAX;
+    capacity = (int32_t) new_capacity;
+    newData = janet_realloc(old, capacity * sizeof(Janet));
     if (NULL == newData) {
         JANET_OUT_OF_MEMORY;
     }
+    janet_vm.next_collection += (capacity - array->capacity) * sizeof(Janet);
     array->data = newData;
     array->capacity = capacity;
 }
@@ -96,6 +93,9 @@ void janet_array_setcount(JanetArray *array, int32_t count) {
 
 /* Push a value to the top of the array */
 void janet_array_push(JanetArray *array, Janet x) {
+    if (array->count == INT32_MAX) {
+        janet_panic("array overflow");
+    }
     int32_t newcount = array->count + 1;
     janet_array_ensure(array, newcount, 2);
     array->data[array->count] = x;
@@ -122,36 +122,81 @@ Janet janet_array_peek(JanetArray *array) {
 
 /* C Functions */
 
-static Janet cfun_array_new(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_array_new,
+              "(array/new capacity)",
+              "Creates a new empty array with a pre-allocated capacity. The same as "
+              "(array) but can be more efficient if the maximum size of an array is known.") {
     janet_fixarity(argc, 1);
     int32_t cap = janet_getinteger(argv, 0);
     JanetArray *array = janet_array(cap);
     return janet_wrap_array(array);
 }
 
-static Janet cfun_array_pop(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_array_new_filled,
+              "(array/new-filled count &opt value)",
+              "Creates a new array of `count` elements, all set to `value`, which defaults to nil. Returns the new array.") {
+    janet_arity(argc, 1, 2);
+    int32_t count = janet_getinteger(argv, 0);
+    Janet x = (argc == 2) ? argv[1] : janet_wrap_nil();
+    JanetArray *array = janet_array(count);
+    for (int32_t i = 0; i < count; i++) {
+        array->data[i] = x;
+    }
+    array->count = count;
+    return janet_wrap_array(array);
+}
+
+JANET_CORE_FN(cfun_array_fill,
+              "(array/fill arr &opt value)",
+              "Replace all elements of an array with `value` (defaulting to nil) without changing the length of the array. "
+              "Returns the modified array.") {
+    janet_arity(argc, 1, 2);
+    JanetArray *array = janet_getarray(argv, 0);
+    Janet x = (argc == 2) ? argv[1] : janet_wrap_nil();
+    for (int32_t i = 0; i < array->count; i++) {
+        array->data[i] = x;
+    }
+    return argv[0];
+}
+
+JANET_CORE_FN(cfun_array_pop,
+              "(array/pop arr)",
+              "Remove the last element of the array and return it. If the array is empty, will return nil. Modifies "
+              "the input array.") {
     janet_fixarity(argc, 1);
     JanetArray *array = janet_getarray(argv, 0);
     return janet_array_pop(array);
 }
 
-static Janet cfun_array_peek(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_array_peek,
+              "(array/peek arr)",
+              "Returns the last element of the array. Does not modify the array.") {
     janet_fixarity(argc, 1);
     JanetArray *array = janet_getarray(argv, 0);
     return janet_array_peek(array);
 }
 
-static Janet cfun_array_push(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_array_push,
+              "(array/push arr x)",
+              "Insert an element in the end of an array. Modifies the input array and returns it.") {
     janet_arity(argc, 1, -1);
     JanetArray *array = janet_getarray(argv, 0);
+    if (INT32_MAX - argc + 1 <= array->count) {
+        janet_panic("array overflow");
+    }
     int32_t newcount = array->count - 1 + argc;
     janet_array_ensure(array, newcount, 2);
-    if (argc > 1) memcpy(array->data + array->count, argv + 1, (argc - 1) * sizeof(Janet));
+    if (argc > 1) memcpy(array->data + array->count, argv + 1, (size_t)(argc - 1) * sizeof(Janet));
     array->count = newcount;
     return argv[0];
 }
 
-static Janet cfun_array_ensure(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_array_ensure,
+              "(array/ensure arr capacity growth)",
+              "Ensures that the memory backing the array is large enough for `capacity` "
+              "items at the given rate of growth. Capacity and growth must be integers. "
+              "If the backing capacity is already enough, then this function does nothing. "
+              "Otherwise, the backing memory will be reallocated so that there is enough space.") {
     janet_fixarity(argc, 3);
     JanetArray *array = janet_getarray(argv, 0);
     int32_t newcount = janet_getinteger(argv, 1);
@@ -161,9 +206,15 @@ static Janet cfun_array_ensure(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_array_slice(int32_t argc, Janet *argv) {
-    JanetRange range = janet_getslice(argc, argv);
+JANET_CORE_FN(cfun_array_slice,
+              "(array/slice arrtup &opt start end)",
+              "Takes a slice of array or tuple from `start` to `end`. The range is half open, "
+              "[start, end). Indexes can also be negative, indicating indexing from the "
+              "end of the array. By default, `start` is 0 and `end` is the length of the array. "
+              "Note that index -1 is synonymous with index `(length arrtup)` to allow a full "
+              "negative slice range. Returns a new array.") {
     JanetView view = janet_getindexed(argv, 0);
+    JanetRange range = janet_getslice(argc, argv);
     JanetArray *array = janet_array(range.end - range.start);
     if (array->data)
         memcpy(array->data, view.items + range.start, sizeof(Janet) * (range.end - range.start));
@@ -171,7 +222,12 @@ static Janet cfun_array_slice(int32_t argc, Janet *argv) {
     return janet_wrap_array(array);
 }
 
-static Janet cfun_array_concat(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_array_concat,
+              "(array/concat arr & parts)",
+              "Concatenates a variable number of arrays (and tuples) into the first argument, "
+              "which must be an array. If any of the parts are arrays or tuples, their elements will "
+              "be inserted into the array. Otherwise, each part in `parts` will be appended to `arr` in order. "
+              "Return the modified array `arr`.") {
     int32_t i;
     janet_arity(argc, 1, -1);
     JanetArray *array = janet_getarray(argv, 0);
@@ -185,6 +241,11 @@ static Janet cfun_array_concat(int32_t argc, Janet *argv) {
                 int32_t j, len = 0;
                 const Janet *vals = NULL;
                 janet_indexed_view(argv[i], &vals, &len);
+                if (array->data == vals) {
+                    int32_t newcount = array->count + len;
+                    janet_array_ensure(array, newcount, 2);
+                    janet_indexed_view(argv[i], &vals, &len);
+                }
                 for (j = 0; j < len; j++)
                     janet_array_push(array, vals[j]);
             }
@@ -194,7 +255,12 @@ static Janet cfun_array_concat(int32_t argc, Janet *argv) {
     return janet_wrap_array(array);
 }
 
-static Janet cfun_array_insert(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_array_insert,
+              "(array/insert arr at & xs)",
+              "Insert all `xs` into array `arr` at index `at`. `at` should be an integer between "
+              "0 and the length of the array. A negative value for `at` will index backwards from "
+              "the end of the array, such that inserting at -1 appends to the array. "
+              "Returns the array.") {
     size_t chunksize, restsize;
     janet_arity(argc, 2, -1);
     JanetArray *array = janet_getarray(argv, 0);
@@ -206,16 +272,26 @@ static Janet cfun_array_insert(int32_t argc, Janet *argv) {
         janet_panicf("insertion index %d out of range [0,%d]", at, array->count);
     chunksize = (argc - 2) * sizeof(Janet);
     restsize = (array->count - at) * sizeof(Janet);
+    if (INT32_MAX - (argc - 2) < array->count) {
+        janet_panic("array overflow");
+    }
     janet_array_ensure(array, array->count + argc - 2, 2);
-    memmove(array->data + at + argc - 2,
-            array->data + at,
-            restsize);
-    memcpy(array->data + at, argv + 2, chunksize);
+    if (restsize) {
+        memmove(array->data + at + argc - 2,
+                array->data + at,
+                restsize);
+    }
+    safe_memcpy(array->data + at, argv + 2, chunksize);
     array->count += (argc - 2);
     return argv[0];
 }
 
-static Janet cfun_array_remove(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_array_remove,
+              "(array/remove arr at &opt n)",
+              "Remove up to `n` elements starting at index `at` in array `arr`. `at` can index from "
+              "the end of the array with a negative index, and `n` must be a non-negative integer. "
+              "By default, `n` is 1. "
+              "Returns the array.") {
     janet_arity(argc, 2, 3);
     JanetArray *array = janet_getarray(argv, 0);
     int32_t at = janet_getinteger(argv, 1);
@@ -240,72 +316,55 @@ static Janet cfun_array_remove(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static const JanetReg array_cfuns[] = {
-    {
-        "array/new", cfun_array_new,
-        JDOC("(array/new capacity)\n\n"
-             "Creates a new empty array with a pre-allocated capacity. The same as "
-             "(array) but can be more efficient if the maximum size of an array is known.")
-    },
-    {
-        "array/pop", cfun_array_pop,
-        JDOC("(array/pop arr)\n\n"
-             "Remove the last element of the array and return it. If the array is empty, will return nil. Modifies "
-             "the input array.")
-    },
-    {
-        "array/peek", cfun_array_peek,
-        JDOC("(array/peek arr)\n\n"
-             "Returns the last element of the array. Does not modify the array.")
-    },
-    {
-        "array/push", cfun_array_push,
-        JDOC("(array/push arr x)\n\n"
-             "Insert an element in the end of an array. Modifies the input array and returns it.")
-    },
-    {
-        "array/ensure", cfun_array_ensure,
-        JDOC("(array/ensure arr capacity)\n\n"
-             "Ensures that the memory backing the array is large enough for capacity "
-             "items. Capacity must be an integer. If the backing capacity is already enough, "
-             "then this function does nothing. Otherwise, the backing memory will be reallocated "
-             "so that there is enough space.")
-    },
-    {
-        "array/slice", cfun_array_slice,
-        JDOC("(array/slice arrtup [, start=0 [, end=(length arrtup)]])\n\n"
-             "Takes a slice of array or tuple from start to end. The range is half open, "
-             "[start, end). Indexes can also be negative, indicating indexing from the end of the "
-             "end of the array. By default, start is 0 and end is the length of the array. "
-             "Returns a new array.")
-    },
-    {
-        "array/concat", cfun_array_concat,
-        JDOC("(array/concat arr & parts)\n\n"
-             "Concatenates a variadic number of arrays (and tuples) into the first argument "
-             "which must an array. If any of the parts are arrays or tuples, their elements will "
-             "be inserted into the array. Otherwise, each part in parts will be appended to arr in order. "
-             "Return the modified array arr.")
-    },
-    {
-        "array/insert", cfun_array_insert,
-        JDOC("(array/insert arr at & xs)\n\n"
-             "Insert all of xs into array arr at index at. at should be an integer "
-             "0 and the length of the array. A negative value for at will index from "
-             "the end of the array, such that inserting at -1 appends to the array. "
-             "Returns the array.")
-    },
-    {
-        "array/remove", cfun_array_remove,
-        JDOC("(array/remove arr at [, n=1])\n\n"
-             "Remove up to n elements starting at index at in array arr. at can index from "
-             "the end of the array with a negative index, and n must be a non-negative integer. "
-             "Returns the array.")
-    },
-    {NULL, NULL, NULL}
-};
+JANET_CORE_FN(cfun_array_trim,
+              "(array/trim arr)",
+              "Set the backing capacity of an array to its current length. Returns the modified array.") {
+    janet_fixarity(argc, 1);
+    JanetArray *array = janet_getarray(argv, 0);
+    if (array->count) {
+        if (array->count < array->capacity) {
+            Janet *newData = janet_realloc(array->data, array->count * sizeof(Janet));
+            if (NULL == newData) {
+                JANET_OUT_OF_MEMORY;
+            }
+            array->data = newData;
+            array->capacity = array->count;
+        }
+    } else {
+        array->capacity = 0;
+        janet_free(array->data);
+        array->data = NULL;
+    }
+    return argv[0];
+}
+
+JANET_CORE_FN(cfun_array_clear,
+              "(array/clear arr)",
+              "Empties an array, setting it's count to 0 but does not free the backing capacity. "
+              "Returns the modified array.") {
+    janet_fixarity(argc, 1);
+    JanetArray *array = janet_getarray(argv, 0);
+    array->count = 0;
+    return argv[0];
+}
 
 /* Load the array module */
 void janet_lib_array(JanetTable *env) {
-    janet_core_cfuns(env, NULL, array_cfuns);
+    JanetRegExt array_cfuns[] = {
+        JANET_CORE_REG("array/new", cfun_array_new),
+        JANET_CORE_REG("array/new-filled", cfun_array_new_filled),
+        JANET_CORE_REG("array/fill", cfun_array_fill),
+        JANET_CORE_REG("array/pop", cfun_array_pop),
+        JANET_CORE_REG("array/peek", cfun_array_peek),
+        JANET_CORE_REG("array/push", cfun_array_push),
+        JANET_CORE_REG("array/ensure", cfun_array_ensure),
+        JANET_CORE_REG("array/slice", cfun_array_slice),
+        JANET_CORE_REG("array/concat", cfun_array_concat),
+        JANET_CORE_REG("array/insert", cfun_array_insert),
+        JANET_CORE_REG("array/remove", cfun_array_remove),
+        JANET_CORE_REG("array/trim", cfun_array_trim),
+        JANET_CORE_REG("array/clear", cfun_array_clear),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, array_cfuns);
 }

src/core/asm.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,6 +21,7 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "util.h"
 #endif
@@ -52,7 +53,6 @@ struct JanetAssembler {
 
     Janet name;
     JanetTable labels; /* keyword -> bytecode index */
-    JanetTable constants; /* symbol -> constant index */
     JanetTable slots; /* symbol -> slot index */
     JanetTable envs; /* symbol -> environment index */
     JanetTable defs; /* symbol -> funcdefs index */
@@ -73,20 +73,22 @@ static const JanetInstructionDef janet_ops[] = {
     {"call", JOP_CALL},
     {"clo", JOP_CLOSURE},
     {"cmp", JOP_COMPARE},
+    {"cncl", JOP_CANCEL},
     {"div", JOP_DIVIDE},
     {"divim", JOP_DIVIDE_IMMEDIATE},
     {"eq", JOP_EQUALS},
     {"eqim", JOP_EQUALS_IMMEDIATE},
-    {"eqn", JOP_NUMERIC_EQUAL},
     {"err", JOP_ERROR},
     {"get", JOP_GET},
     {"geti", JOP_GET_INDEX},
     {"gt", JOP_GREATER_THAN},
-    {"gten", JOP_NUMERIC_GREATER_THAN_EQUAL},
+    {"gte", JOP_GREATER_THAN_EQUAL},
     {"gtim", JOP_GREATER_THAN_IMMEDIATE},
-    {"gtn", JOP_NUMERIC_GREATER_THAN},
+    {"in", JOP_IN},
     {"jmp", JOP_JUMP},
     {"jmpif", JOP_JUMP_IF},
+    {"jmpni", JOP_JUMP_IF_NIL},
+    {"jmpnn", JOP_JUMP_IF_NOT_NIL},
     {"jmpno", JOP_JUMP_IF_NOT},
     {"ldc", JOP_LOAD_CONSTANT},
     {"ldf", JOP_LOAD_FALSE},
@@ -97,9 +99,8 @@ static const JanetInstructionDef janet_ops[] = {
     {"ldu", JOP_LOAD_UPVALUE},
     {"len", JOP_LENGTH},
     {"lt", JOP_LESS_THAN},
-    {"lten", JOP_NUMERIC_LESS_THAN_EQUAL},
+    {"lte", JOP_LESS_THAN_EQUAL},
     {"ltim", JOP_LESS_THAN_IMMEDIATE},
-    {"ltn", JOP_NUMERIC_LESS_THAN},
     {"mkarr", JOP_MAKE_ARRAY},
     {"mkbtp", JOP_MAKE_BRACKET_TUPLE},
     {"mkbuf", JOP_MAKE_BUFFER},
@@ -107,17 +108,23 @@ static const JanetInstructionDef janet_ops[] = {
     {"mkstu", JOP_MAKE_STRUCT},
     {"mktab", JOP_MAKE_TABLE},
     {"mktup", JOP_MAKE_TUPLE},
+    {"mod", JOP_MODULO},
     {"movf", JOP_MOVE_FAR},
     {"movn", JOP_MOVE_NEAR},
     {"mul", JOP_MULTIPLY},
     {"mulim", JOP_MULTIPLY_IMMEDIATE},
+    {"neq", JOP_NOT_EQUALS},
+    {"neqim", JOP_NOT_EQUALS_IMMEDIATE},
+    {"next", JOP_NEXT},
     {"noop", JOP_NOOP},
+    {"prop", JOP_PROPAGATE},
     {"push", JOP_PUSH},
     {"push2", JOP_PUSH_2},
     {"push3", JOP_PUSH_3},
     {"pusha", JOP_PUSH_ARRAY},
     {"put", JOP_PUT},
     {"puti", JOP_PUT_INDEX},
+    {"rem", JOP_REMAINDER},
     {"res", JOP_RESUME},
     {"ret", JOP_RETURN},
     {"retn", JOP_RETURN_NIL},
@@ -167,21 +174,28 @@ static void janet_asm_deinit(JanetAssembler *a) {
     janet_table_deinit(&a->slots);
     janet_table_deinit(&a->labels);
     janet_table_deinit(&a->envs);
-    janet_table_deinit(&a->constants);
     janet_table_deinit(&a->defs);
 }
 
+static void janet_asm_longjmp(JanetAssembler *a) {
+#if defined(JANET_BSD) || defined(JANET_APPLE)
+    _longjmp(a->on_error, 1);
+#else
+    longjmp(a->on_error, 1);
+#endif
+}
+
 /* Throw some kind of assembly error */
 static void janet_asm_error(JanetAssembler *a, const char *message) {
     a->errmessage = janet_formatc("%s, instruction %d", message, a->errindex);
-    longjmp(a->on_error, 1);
+    janet_asm_longjmp(a);
 }
 #define janet_asm_assert(a, c, m) do { if (!(c)) janet_asm_error((a), (m)); } while (0)
 
 /* Throw some kind of assembly error */
 static void janet_asm_errorv(JanetAssembler *a, const uint8_t *m) {
     a->errmessage = m;
-    longjmp(a->on_error, 1);
+    janet_asm_longjmp(a);
 }
 
 /* Add a closure environment to the assembler. Sub funcdefs may need
@@ -210,7 +224,7 @@ static int32_t janet_asm_addenv(JanetAssembler *a, Janet envname) {
     janet_table_put(&a->envs, envname, janet_wrap_number(envindex));
     if (envindex >= a->environments_capacity) {
         int32_t newcap = 2 * envindex;
-        def->environments = realloc(def->environments, newcap * sizeof(int32_t));
+        def->environments = janet_realloc(def->environments, newcap * sizeof(int32_t));
         if (NULL == def->environments) {
             JANET_OUT_OF_MEMORY;
         }
@@ -239,9 +253,6 @@ static int32_t doarg_1(
         case JANET_OAT_ENVIRONMENT:
             c = &a->envs;
             break;
-        case JANET_OAT_CONSTANT:
-            c = &a->constants;
-            break;
         case JANET_OAT_LABEL:
             c = &a->labels;
             break;
@@ -493,16 +504,19 @@ static JanetAssembleResult janet_asm1(JanetAssembler *parent, Janet source, int
     a.defs_capacity = 0;
     a.name = janet_wrap_nil();
     janet_table_init(&a.labels, 0);
-    janet_table_init(&a.constants, 0);
     janet_table_init(&a.slots, 0);
     janet_table_init(&a.envs, 0);
     janet_table_init(&a.defs, 0);
 
     /* Set error jump */
+#if defined(JANET_BSD) || defined(JANET_APPLE)
+    if (_setjmp(a.on_error)) {
+#else
     if (setjmp(a.on_error)) {
+#endif
         if (NULL != a.parent) {
             janet_asm_deinit(&a);
-            longjmp(a.parent->on_error, 1);
+            janet_asm_longjmp(a.parent);
         }
         result.funcdef = NULL;
         result.error = a.errmessage;
@@ -517,34 +531,34 @@ static JanetAssembleResult janet_asm1(JanetAssembler *parent, Janet source, int
                      "expected struct or table for assembly source");
 
     /* Check for function name */
-    a.name = janet_get1(s, janet_csymbolv("name"));
+    a.name = janet_get1(s, janet_ckeywordv("name"));
     if (!janet_checktype(a.name, JANET_NIL)) {
         def->name = janet_to_string(a.name);
     }
 
     /* Set function arity */
-    x = janet_get1(s, janet_csymbolv("arity"));
+    x = janet_get1(s, janet_ckeywordv("arity"));
     def->arity = janet_checkint(x) ? janet_unwrap_integer(x) : 0;
     janet_asm_assert(&a, def->arity >= 0, "arity must be non-negative");
 
-    x = janet_get1(s, janet_csymbolv("max-arity"));
+    x = janet_get1(s, janet_ckeywordv("max-arity"));
     def->max_arity = janet_checkint(x) ? janet_unwrap_integer(x) : def->arity;
     janet_asm_assert(&a, def->max_arity >= def->arity, "max-arity must be greater than or equal to arity");
 
-    x = janet_get1(s, janet_csymbolv("min-arity"));
+    x = janet_get1(s, janet_ckeywordv("min-arity"));
     def->min_arity = janet_checkint(x) ? janet_unwrap_integer(x) : def->arity;
     janet_asm_assert(&a, def->min_arity <= def->arity, "min-arity must be less than or equal to arity");
 
     /* Check vararg */
-    x = janet_get1(s, janet_csymbolv("vararg"));
+    x = janet_get1(s, janet_ckeywordv("vararg"));
     if (janet_truthy(x)) def->flags |= JANET_FUNCDEF_FLAG_VARARG;
 
     /* Check source */
-    x = janet_get1(s, janet_csymbolv("source"));
+    x = janet_get1(s, janet_ckeywordv("source"));
     if (janet_checktype(x, JANET_STRING)) def->source = janet_unwrap_string(x);
 
     /* Create slot aliases */
-    x = janet_get1(s, janet_csymbolv("slots"));
+    x = janet_get1(s, janet_ckeywordv("slots"));
     if (janet_indexed_view(x, &arr, &count)) {
         for (i = 0; i < count; i++) {
             Janet v = arr[i];
@@ -565,34 +579,16 @@ static JanetAssembleResult janet_asm1(JanetAssembler *parent, Janet source, int
     }
 
     /* Parse constants */
-    x = janet_get1(s, janet_csymbolv("constants"));
+    x = janet_get1(s, janet_ckeywordv("constants"));
     if (janet_indexed_view(x, &arr, &count)) {
         def->constants_length = count;
-        def->constants = malloc(sizeof(Janet) * count);
+        def->constants = janet_malloc(sizeof(Janet) * (size_t) count);
         if (NULL == def->constants) {
             JANET_OUT_OF_MEMORY;
         }
         for (i = 0; i < count; i++) {
             Janet ct = arr[i];
-            if (janet_checktype(ct, JANET_TUPLE) &&
-                    janet_tuple_length(janet_unwrap_tuple(ct)) > 1 &&
-                    janet_checktype(janet_unwrap_tuple(ct)[0], JANET_SYMBOL)) {
-                const Janet *t = janet_unwrap_tuple(ct);
-                int32_t tcount = janet_tuple_length(t);
-                const uint8_t *macro = janet_unwrap_symbol(t[0]);
-                if (0 == janet_cstrcmp(macro, "quote")) {
-                    def->constants[i] = t[1];
-                } else if (tcount == 3 &&
-                           janet_checktype(t[1], JANET_SYMBOL) &&
-                           0 == janet_cstrcmp(macro, "def")) {
-                    def->constants[i] = t[2];
-                    janet_table_put(&a.constants, t[1], janet_wrap_integer(i));
-                } else {
-                    janet_asm_errorv(&a, janet_formatc("could not parse constant \"%v\"", ct));
-                }
-            } else {
-                def->constants[i] = ct;
-            }
+            def->constants[i] = ct;
         }
     } else {
         def->constants = NULL;
@@ -600,7 +596,7 @@ static JanetAssembleResult janet_asm1(JanetAssembler *parent, Janet source, int
     }
 
     /* Parse sub funcdefs */
-    x = janet_get1(s, janet_csymbolv("closures"));
+    x = janet_get1(s, janet_ckeywordv("closures"));
     if (janet_indexed_view(x, &arr, &count)) {
         int32_t i;
         for (i = 0; i < count; i++) {
@@ -611,14 +607,14 @@ static JanetAssembleResult janet_asm1(JanetAssembler *parent, Janet source, int
             if (subres.status != JANET_ASSEMBLE_OK) {
                 janet_asm_errorv(&a, subres.error);
             }
-            subname = janet_get1(arr[i], janet_csymbolv("name"));
+            subname = janet_get1(arr[i], janet_ckeywordv("name"));
             if (!janet_checktype(subname, JANET_NIL)) {
                 janet_table_put(&a.defs, subname, janet_wrap_integer(def->defs_length));
             }
             newlen = def->defs_length + 1;
             if (a.defs_capacity < newlen) {
                 int32_t newcap = newlen;
-                def->defs = realloc(def->defs, newcap * sizeof(JanetFuncDef *));
+                def->defs = janet_realloc(def->defs, newcap * sizeof(JanetFuncDef *));
                 if (NULL == def->defs) {
                     JANET_OUT_OF_MEMORY;
                 }
@@ -630,7 +626,7 @@ static JanetAssembleResult janet_asm1(JanetAssembler *parent, Janet source, int
     }
 
     /* Parse bytecode and labels */
-    x = janet_get1(s, janet_csymbolv("bytecode"));
+    x = janet_get1(s, janet_ckeywordv("bytecode"));
     if (janet_indexed_view(x, &arr, &count)) {
         /* Do labels and find length */
         int32_t blength = 0;
@@ -647,7 +643,7 @@ static JanetAssembleResult janet_asm1(JanetAssembler *parent, Janet source, int
         }
         /* Allocate bytecode array */
         def->bytecode_length = blength;
-        def->bytecode = malloc(sizeof(uint32_t) * blength);
+        def->bytecode = janet_malloc(sizeof(uint32_t) * (size_t) blength);
         if (NULL == def->bytecode) {
             JANET_OUT_OF_MEMORY;
         }
@@ -686,10 +682,13 @@ static JanetAssembleResult janet_asm1(JanetAssembler *parent, Janet source, int
     a.errindex = -1;
 
     /* Check for source mapping */
-    x = janet_get1(s, janet_csymbolv("sourcemap"));
+    x = janet_get1(s, janet_ckeywordv("sourcemap"));
     if (janet_indexed_view(x, &arr, &count)) {
         janet_asm_assert(&a, count == def->bytecode_length, "sourcemap must have the same length as the bytecode");
-        def->sourcemap = malloc(sizeof(JanetSourceMapping) * count);
+        def->sourcemap = janet_malloc(sizeof(JanetSourceMapping) * (size_t) count);
+        if (NULL == def->sourcemap) {
+            JANET_OUT_OF_MEMORY;
+        }
         for (i = 0; i < count; i++) {
             const Janet *tup;
             Janet entry = arr[i];
@@ -704,21 +703,27 @@ static JanetAssembleResult janet_asm1(JanetAssembler *parent, Janet source, int
             if (!janet_checkint(tup[1])) {
                 janet_asm_error(&a, "expected integer");
             }
-            mapping.start = janet_unwrap_integer(tup[0]);
-            mapping.end = janet_unwrap_integer(tup[1]);
+            mapping.line = janet_unwrap_integer(tup[0]);
+            mapping.column = janet_unwrap_integer(tup[1]);
             def->sourcemap[i] = mapping;
         }
     }
 
     /* Set environments */
     def->environments =
-        realloc(def->environments, def->environments_length * sizeof(int32_t));
+        janet_realloc(def->environments, def->environments_length * sizeof(int32_t));
+    if (NULL == def->environments) {
+        JANET_OUT_OF_MEMORY;
+    }
 
     /* Verify the func def */
     if (janet_verify(def)) {
         janet_asm_error(&a, "invalid assembly");
     }
 
+    /* Add final flags */
+    janet_def_addflags(def);
+
     /* Finish everything and return funcdef */
     janet_asm_deinit(&a);
     result.error = NULL;
@@ -748,31 +753,31 @@ static const JanetInstructionDef *janet_asm_reverse_lookup(uint32_t instr) {
 }
 
 /* Create some constant sized tuples */
-static Janet tup1(Janet x) {
+static const Janet *tup1(Janet x) {
     Janet *tup = janet_tuple_begin(1);
     tup[0] = x;
-    return janet_wrap_tuple(janet_tuple_end(tup));
+    return janet_tuple_end(tup);
 }
-static Janet tup2(Janet x, Janet y) {
+static const Janet *tup2(Janet x, Janet y) {
     Janet *tup = janet_tuple_begin(2);
     tup[0] = x;
     tup[1] = y;
-    return janet_wrap_tuple(janet_tuple_end(tup));
+    return janet_tuple_end(tup);
 }
-static Janet tup3(Janet x, Janet y, Janet z) {
+static const Janet *tup3(Janet x, Janet y, Janet z) {
     Janet *tup = janet_tuple_begin(3);
     tup[0] = x;
     tup[1] = y;
     tup[2] = z;
-    return janet_wrap_tuple(janet_tuple_end(tup));
+    return janet_tuple_end(tup);
 }
-static Janet tup4(Janet w, Janet x, Janet y, Janet z) {
+static const Janet *tup4(Janet w, Janet x, Janet y, Janet z) {
     Janet *tup = janet_tuple_begin(4);
     tup[0] = w;
     tup[1] = x;
     tup[2] = y;
     tup[3] = z;
-    return janet_wrap_tuple(janet_tuple_end(tup));
+    return janet_tuple_end(tup);
 }
 
 /* Given an argument, convert it to the appropriate integer or symbol */
@@ -783,130 +788,167 @@ Janet janet_asm_decode_instruction(uint32_t instr) {
         return janet_wrap_integer((int32_t)instr);
     }
     name = janet_csymbolv(def->name);
+    const Janet *ret = NULL;
 #define oparg(shift, mask) ((instr >> ((shift) << 3)) & (mask))
     switch (janet_instructions[def->opcode]) {
         case JINT_0:
-            return tup1(name);
+            ret = tup1(name);
+            break;
         case JINT_S:
-            return tup2(name, janet_wrap_integer(oparg(1, 0xFFFFFF)));
+            ret = tup2(name, janet_wrap_integer(oparg(1, 0xFFFFFF)));
+            break;
         case JINT_L:
-            return tup2(name, janet_wrap_integer((int32_t)instr >> 8));
+            ret = tup2(name, janet_wrap_integer((int32_t)instr >> 8));
+            break;
         case JINT_SS:
         case JINT_ST:
         case JINT_SC:
         case JINT_SU:
         case JINT_SD:
-            return tup3(name,
-                        janet_wrap_integer(oparg(1, 0xFF)),
-                        janet_wrap_integer(oparg(2, 0xFFFF)));
+            ret = tup3(name,
+                       janet_wrap_integer(oparg(1, 0xFF)),
+                       janet_wrap_integer(oparg(2, 0xFFFF)));
+            break;
         case JINT_SI:
         case JINT_SL:
-            return tup3(name,
+            ret =  tup3(name,
                         janet_wrap_integer(oparg(1, 0xFF)),
                         janet_wrap_integer((int32_t)instr >> 16));
+            break;
         case JINT_SSS:
         case JINT_SES:
         case JINT_SSU:
-            return tup4(name,
-                        janet_wrap_integer(oparg(1, 0xFF)),
-                        janet_wrap_integer(oparg(2, 0xFF)),
-                        janet_wrap_integer(oparg(3, 0xFF)));
+            ret = tup4(name,
+                       janet_wrap_integer(oparg(1, 0xFF)),
+                       janet_wrap_integer(oparg(2, 0xFF)),
+                       janet_wrap_integer(oparg(3, 0xFF)));
+            break;
         case JINT_SSI:
-            return tup4(name,
-                        janet_wrap_integer(oparg(1, 0xFF)),
-                        janet_wrap_integer(oparg(2, 0xFF)),
-                        janet_wrap_integer((int32_t)instr >> 24));
+            ret = tup4(name,
+                       janet_wrap_integer(oparg(1, 0xFF)),
+                       janet_wrap_integer(oparg(2, 0xFF)),
+                       janet_wrap_integer((int32_t)instr >> 24));
+            break;
     }
 #undef oparg
+    if (ret) {
+        /* Check if break point set */
+        if (instr & 0x80) {
+            janet_tuple_flag(ret) |= JANET_TUPLE_FLAG_BRACKETCTOR;
+        }
+        return janet_wrap_tuple(ret);
+    }
     return janet_wrap_nil();
 }
 
-Janet janet_disasm(JanetFuncDef *def) {
-    int32_t i;
+/*
+ * Disasm sections
+ */
+
+static Janet janet_disasm_arity(JanetFuncDef *def) {
+    return janet_wrap_integer(def->arity);
+}
+
+static Janet janet_disasm_min_arity(JanetFuncDef *def) {
+    return janet_wrap_integer(def->min_arity);
+}
+
+static Janet janet_disasm_max_arity(JanetFuncDef *def) {
+    return janet_wrap_integer(def->max_arity);
+}
+
+static Janet janet_disasm_slotcount(JanetFuncDef *def) {
+    return janet_wrap_integer(def->slotcount);
+}
+
+static Janet janet_disasm_bytecode(JanetFuncDef *def) {
     JanetArray *bcode = janet_array(def->bytecode_length);
-    JanetArray *constants;
-    JanetTable *ret = janet_table(10);
-    janet_table_put(ret, janet_csymbolv("arity"), janet_wrap_integer(def->arity));
-    janet_table_put(ret, janet_csymbolv("min-arity"), janet_wrap_integer(def->min_arity));
-    janet_table_put(ret, janet_csymbolv("max-arity"), janet_wrap_integer(def->max_arity));
-    janet_table_put(ret, janet_csymbolv("bytecode"), janet_wrap_array(bcode));
-    if (NULL != def->source) {
-        janet_table_put(ret, janet_csymbolv("source"), janet_wrap_string(def->source));
-    }
-    if (def->flags & JANET_FUNCDEF_FLAG_VARARG) {
-        janet_table_put(ret, janet_csymbolv("vararg"), janet_wrap_true());
-    }
-    if (NULL != def->name) {
-        janet_table_put(ret, janet_csymbolv("name"), janet_wrap_string(def->name));
-    }
-
-    /* Add constants */
-    if (def->constants_length > 0) {
-        constants = janet_array(def->constants_length);
-        janet_table_put(ret, janet_csymbolv("constants"), janet_wrap_array(constants));
-        for (i = 0; i < def->constants_length; i++) {
-            Janet src = def->constants[i];
-            Janet dest;
-            if (janet_checktype(src, JANET_TUPLE)) {
-                dest = tup2(janet_csymbolv("quote"), src);
-            } else {
-                dest = src;
-            }
-            constants->data[i] = dest;
-        }
-        constants->count = def->constants_length;
-    }
-
-    /* Add bytecode */
-    for (i = 0; i < def->bytecode_length; i++) {
+    for (int32_t i = 0; i < def->bytecode_length; i++) {
         bcode->data[i] = janet_asm_decode_instruction(def->bytecode[i]);
     }
     bcode->count = def->bytecode_length;
+    return janet_wrap_array(bcode);
+}
 
-    /* Add source map */
-    if (NULL != def->sourcemap) {
-        JanetArray *sourcemap = janet_array(def->bytecode_length);
-        for (i = 0; i < def->bytecode_length; i++) {
-            Janet *t = janet_tuple_begin(2);
-            JanetSourceMapping mapping = def->sourcemap[i];
-            t[0] = janet_wrap_integer(mapping.start);
-            t[1] = janet_wrap_integer(mapping.end);
-            sourcemap->data[i] = janet_wrap_tuple(janet_tuple_end(t));
-        }
-        sourcemap->count = def->bytecode_length;
-        janet_table_put(ret, janet_csymbolv("sourcemap"), janet_wrap_array(sourcemap));
+static Janet janet_disasm_source(JanetFuncDef *def) {
+    if (def->source != NULL) return janet_wrap_string(def->source);
+    return janet_wrap_nil();
+}
+
+static Janet janet_disasm_name(JanetFuncDef *def) {
+    if (def->name != NULL) return janet_wrap_string(def->name);
+    return janet_wrap_nil();
+}
+
+static Janet janet_disasm_vararg(JanetFuncDef *def) {
+    return janet_wrap_boolean(def->flags & JANET_FUNCDEF_FLAG_VARARG);
+}
+
+static Janet janet_disasm_constants(JanetFuncDef *def) {
+    JanetArray *constants = janet_array(def->constants_length);
+    for (int32_t i = 0; i < def->constants_length; i++) {
+        constants->data[i] = def->constants[i];
     }
+    constants->count = def->constants_length;
+    return janet_wrap_array(constants);
+}
 
-    /* Add environments */
-    if (NULL != def->environments) {
-        JanetArray *envs = janet_array(def->environments_length);
-        for (i = 0; i < def->environments_length; i++) {
-            envs->data[i] = janet_wrap_integer(def->environments[i]);
-        }
-        envs->count = def->environments_length;
-        janet_table_put(ret, janet_csymbolv("environments"), janet_wrap_array(envs));
+static Janet janet_disasm_sourcemap(JanetFuncDef *def) {
+    if (NULL == def->sourcemap) return janet_wrap_nil();
+    JanetArray *sourcemap = janet_array(def->bytecode_length);
+    for (int32_t i = 0; i < def->bytecode_length; i++) {
+        Janet *t = janet_tuple_begin(2);
+        JanetSourceMapping mapping = def->sourcemap[i];
+        t[0] = janet_wrap_integer(mapping.line);
+        t[1] = janet_wrap_integer(mapping.column);
+        sourcemap->data[i] = janet_wrap_tuple(janet_tuple_end(t));
     }
+    sourcemap->count = def->bytecode_length;
+    return janet_wrap_array(sourcemap);
+}
 
-    /* Add closures */
-    /* Funcdefs cannot be recursive */
-    if (NULL != def->defs) {
-        JanetArray *defs = janet_array(def->defs_length);
-        for (i = 0; i < def->defs_length; i++) {
-            defs->data[i] = janet_disasm(def->defs[i]);
-        }
-        defs->count = def->defs_length;
-        janet_table_put(ret, janet_csymbolv("defs"), janet_wrap_array(defs));
+static Janet janet_disasm_environments(JanetFuncDef *def) {
+    JanetArray *envs = janet_array(def->environments_length);
+    for (int32_t i = 0; i < def->environments_length; i++) {
+        envs->data[i] = janet_wrap_integer(def->environments[i]);
     }
+    envs->count = def->environments_length;
+    return janet_wrap_array(envs);
+}
 
-    /* Add slotcount */
-    janet_table_put(ret, janet_csymbolv("slotcount"), janet_wrap_integer(def->slotcount));
+static Janet janet_disasm_defs(JanetFuncDef *def) {
+    JanetArray *defs = janet_array(def->defs_length);
+    for (int32_t i = 0; i < def->defs_length; i++) {
+        defs->data[i] = janet_disasm(def->defs[i]);
+    }
+    defs->count = def->defs_length;
+    return janet_wrap_array(defs);
+}
 
+Janet janet_disasm(JanetFuncDef *def) {
+    JanetTable *ret = janet_table(10);
+    janet_table_put(ret, janet_ckeywordv("arity"), janet_disasm_arity(def));
+    janet_table_put(ret, janet_ckeywordv("min-arity"), janet_disasm_min_arity(def));
+    janet_table_put(ret, janet_ckeywordv("max-arity"), janet_disasm_max_arity(def));
+    janet_table_put(ret, janet_ckeywordv("bytecode"), janet_disasm_bytecode(def));
+    janet_table_put(ret, janet_ckeywordv("source"), janet_disasm_source(def));
+    janet_table_put(ret, janet_ckeywordv("vararg"), janet_disasm_vararg(def));
+    janet_table_put(ret, janet_ckeywordv("name"), janet_disasm_name(def));
+    janet_table_put(ret, janet_ckeywordv("slotcount"), janet_disasm_slotcount(def));
+    janet_table_put(ret, janet_ckeywordv("constants"), janet_disasm_constants(def));
+    janet_table_put(ret, janet_ckeywordv("sourcemap"), janet_disasm_sourcemap(def));
+    janet_table_put(ret, janet_ckeywordv("environments"), janet_disasm_environments(def));
+    janet_table_put(ret, janet_ckeywordv("defs"), janet_disasm_defs(def));
     return janet_wrap_struct(janet_table_to_struct(ret));
 }
 
-/* C Function for assembly */
-static Janet cfun_asm(int32_t argc, Janet *argv) {
-    janet_arity(argc, 1, 1);
+JANET_CORE_FN(cfun_asm,
+              "(asm assembly)",
+              "Returns a new function that is the compiled result of the assembly.\n"
+              "The syntax for the assembly can be found on the Janet website, and should correspond\n"
+              "to the return value of disasm. Will throw an\n"
+              "error on invalid assembly.") {
+    janet_fixarity(argc, 1);
     JanetAssembleResult res;
     res = janet_asm(argv[0], 0);
     if (res.status != JANET_ASSEMBLE_OK) {
@@ -915,33 +957,54 @@ static Janet cfun_asm(int32_t argc, Janet *argv) {
     return janet_wrap_function(janet_thunk(res.funcdef));
 }
 
-static Janet cfun_disasm(int32_t argc, Janet *argv) {
-    janet_arity(argc, 1, 1);
+JANET_CORE_FN(cfun_disasm,
+              "(disasm func &opt field)",
+              "Returns assembly that could be used to compile the given function. "
+              "func must be a function, not a c function. Will throw on error on a badly "
+              "typed argument. If given a field name, will only return that part of the function assembly. "
+              "Possible fields are:\n\n"
+              "* :arity - number of required and optional arguments.\n"
+              "* :min-arity - minimum number of arguments function can be called with.\n"
+              "* :max-arity - maximum number of arguments function can be called with.\n"
+              "* :vararg - true if function can take a variable number of arguments.\n"
+              "* :bytecode - array of parsed bytecode instructions. Each instruction is a tuple.\n"
+              "* :source - name of source file that this function was compiled from.\n"
+              "* :name - name of function.\n"
+              "* :slotcount - how many virtual registers, or slots, this function uses. Corresponds to stack space used by function.\n"
+              "* :constants - an array of constants referenced by this function.\n"
+              "* :sourcemap - a mapping of each bytecode instruction to a line and column in the source file.\n"
+              "* :environments - an internal mapping of which enclosing functions are referenced for bindings.\n"
+              "* :defs - other function definitions that this function may instantiate.\n") {
+    janet_arity(argc, 1, 2);
     JanetFunction *f = janet_getfunction(argv, 0);
-    return janet_disasm(f->def);
+    if (argc == 2) {
+        JanetKeyword kw = janet_getkeyword(argv, 1);
+        if (!janet_cstrcmp(kw, "arity")) return janet_disasm_arity(f->def);
+        if (!janet_cstrcmp(kw, "min-arity")) return janet_disasm_min_arity(f->def);
+        if (!janet_cstrcmp(kw, "max-arity")) return janet_disasm_max_arity(f->def);
+        if (!janet_cstrcmp(kw, "bytecode")) return janet_disasm_bytecode(f->def);
+        if (!janet_cstrcmp(kw, "source")) return janet_disasm_source(f->def);
+        if (!janet_cstrcmp(kw, "name")) return janet_disasm_name(f->def);
+        if (!janet_cstrcmp(kw, "vararg")) return janet_disasm_vararg(f->def);
+        if (!janet_cstrcmp(kw, "slotcount")) return janet_disasm_slotcount(f->def);
+        if (!janet_cstrcmp(kw, "constants")) return janet_disasm_constants(f->def);
+        if (!janet_cstrcmp(kw, "sourcemap")) return janet_disasm_sourcemap(f->def);
+        if (!janet_cstrcmp(kw, "environments")) return janet_disasm_environments(f->def);
+        if (!janet_cstrcmp(kw, "defs")) return janet_disasm_defs(f->def);
+        janet_panicf("unknown disasm key %v", argv[1]);
+    } else {
+        return janet_disasm(f->def);
+    }
 }
 
-static const JanetReg asm_cfuns[] = {
-    {
-        "asm", cfun_asm,
-        JDOC("(asm assembly)\n\n"
-             "Returns a new function that is the compiled result of the assembly.\n"
-             "The syntax for the assembly can be found on the janet wiki. Will throw an\n"
-             "error on invalid assembly.")
-    },
-    {
-        "disasm", cfun_disasm,
-        JDOC("(disasm func)\n\n"
-             "Returns assembly that could be used be compile the given function.\n"
-             "func must be a function, not a c function. Will throw on error on a badly\n"
-             "typed argument.")
-    },
-    {NULL, NULL, NULL}
-};
-
 /* Load the library */
 void janet_lib_asm(JanetTable *env) {
-    janet_core_cfuns(env, NULL, asm_cfuns);
+    JanetRegExt asm_cfuns[] = {
+        JANET_CORE_REG("asm", cfun_asm),
+        JANET_CORE_REG("disasm", cfun_disasm),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, asm_cfuns);
 }
 
 #endif

src/core/buffer.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,19 +21,21 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "gc.h"
 #include "util.h"
+#include "state.h"
 #endif
 
 /* Initialize a buffer */
 JanetBuffer *janet_buffer_init(JanetBuffer *buffer, int32_t capacity) {
     uint8_t *data = NULL;
-    if (capacity > 0) {
-        data = malloc(sizeof(uint8_t) * capacity);
-        if (NULL == data) {
-            JANET_OUT_OF_MEMORY;
-        }
+    if (capacity < 4) capacity = 4;
+    janet_gcpressure(capacity);
+    data = janet_malloc(sizeof(uint8_t) * (size_t) capacity);
+    if (NULL == data) {
+        JANET_OUT_OF_MEMORY;
     }
     buffer->count = 0;
     buffer->capacity = capacity;
@@ -43,7 +45,7 @@ JanetBuffer *janet_buffer_init(JanetBuffer *buffer, int32_t capacity) {
 
 /* Deinitialize a buffer (free data memory) */
 void janet_buffer_deinit(JanetBuffer *buffer) {
-    free(buffer->data);
+    janet_free(buffer->data);
 }
 
 /* Initialize a buffer */
@@ -57,9 +59,10 @@ void janet_buffer_ensure(JanetBuffer *buffer, int32_t capacity, int32_t growth)
     uint8_t *new_data;
     uint8_t *old = buffer->data;
     if (capacity <= buffer->capacity) return;
-    int64_t big_capacity = capacity * growth;
+    int64_t big_capacity = ((int64_t) capacity) * growth;
     capacity = big_capacity > INT32_MAX ? INT32_MAX : (int32_t) big_capacity;
-    new_data = realloc(old, capacity * sizeof(uint8_t));
+    janet_gcpressure(capacity - buffer->capacity);
+    new_data = janet_realloc(old, (size_t) capacity * sizeof(uint8_t));
     if (NULL == new_data) {
         JANET_OUT_OF_MEMORY;
     }
@@ -88,8 +91,9 @@ void janet_buffer_extra(JanetBuffer *buffer, int32_t n) {
     }
     int32_t new_size = buffer->count + n;
     if (new_size > buffer->capacity) {
-        int32_t new_capacity = new_size * 2;
-        uint8_t *new_data = realloc(buffer->data, new_capacity * sizeof(uint8_t));
+        int32_t new_capacity = (new_size > (INT32_MAX / 2)) ? INT32_MAX : (new_size * 2);
+        uint8_t *new_data = janet_realloc(buffer->data, new_capacity * sizeof(uint8_t));
+        janet_gcpressure(new_capacity - buffer->capacity);
         if (NULL == new_data) {
             JANET_OUT_OF_MEMORY;
         }
@@ -107,6 +111,7 @@ void janet_buffer_push_cstring(JanetBuffer *buffer, const char *cstring) {
 
 /* Push multiple bytes into the buffer */
 void janet_buffer_push_bytes(JanetBuffer *buffer, const uint8_t *string, int32_t length) {
+    if (0 == length) return;
     janet_buffer_extra(buffer, length);
     memcpy(buffer->data + buffer->count, string, length);
     buffer->count += length;
@@ -157,14 +162,20 @@ void janet_buffer_push_u64(JanetBuffer *buffer, uint64_t x) {
 
 /* C functions */
 
-static Janet cfun_buffer_new(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_buffer_new,
+              "(buffer/new capacity)",
+              "Creates a new, empty buffer with enough backing memory for capacity bytes. "
+              "Returns a new buffer of length 0.") {
     janet_fixarity(argc, 1);
     int32_t cap = janet_getinteger(argv, 0);
     JanetBuffer *buffer = janet_buffer(cap);
     return janet_wrap_buffer(buffer);
 }
 
-static Janet cfun_buffer_new_filled(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_buffer_new_filled,
+              "(buffer/new-filled count &opt byte)",
+              "Creates a new buffer of length count filled with byte. By default, byte is 0. "
+              "Returns the new buffer.") {
     janet_arity(argc, 1, 2);
     int32_t count = janet_getinteger(argv, 0);
     int32_t byte = 0;
@@ -178,7 +189,44 @@ static Janet cfun_buffer_new_filled(int32_t argc, Janet *argv) {
     return janet_wrap_buffer(buffer);
 }
 
-static Janet cfun_buffer_u8(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_buffer_fill,
+              "(buffer/fill buffer &opt byte)",
+              "Fill up a buffer with bytes, defaulting to 0s. Does not change the buffer's length. "
+              "Returns the modified buffer.") {
+    janet_arity(argc, 1, 2);
+    JanetBuffer *buffer = janet_getbuffer(argv, 0);
+    int32_t byte = 0;
+    if (argc == 2) {
+        byte = janet_getinteger(argv, 1) & 0xFF;
+    }
+    if (buffer->count) {
+        memset(buffer->data, byte, buffer->count);
+    }
+    return argv[0];
+}
+
+JANET_CORE_FN(cfun_buffer_trim,
+              "(buffer/trim buffer)",
+              "Set the backing capacity of the buffer to the current length of the buffer. Returns the "
+              "modified buffer.") {
+    janet_fixarity(argc, 1);
+    JanetBuffer *buffer = janet_getbuffer(argv, 0);
+    if (buffer->count < buffer->capacity) {
+        int32_t newcap = buffer->count > 4 ? buffer->count : 4;
+        uint8_t *newData = janet_realloc(buffer->data, newcap);
+        if (NULL == newData) {
+            JANET_OUT_OF_MEMORY;
+        }
+        buffer->data = newData;
+        buffer->capacity = newcap;
+    }
+    return argv[0];
+}
+
+JANET_CORE_FN(cfun_buffer_u8,
+              "(buffer/push-byte buffer & xs)",
+              "Append bytes to a buffer. Will expand the buffer as necessary. "
+              "Returns the modified buffer. Will throw an error if the buffer overflows.") {
     int32_t i;
     janet_arity(argc, 1, -1);
     JanetBuffer *buffer = janet_getbuffer(argv, 0);
@@ -188,7 +236,11 @@ static Janet cfun_buffer_u8(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_buffer_word(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_buffer_word,
+              "(buffer/push-word buffer & xs)",
+              "Append machine words to a buffer. The 4 bytes of the integer are appended "
+              "in twos complement, little endian order, unsigned for all x. Returns the modified buffer. Will "
+              "throw an error if the buffer overflows.") {
     int32_t i;
     janet_arity(argc, 1, -1);
     JanetBuffer *buffer = janet_getbuffer(argv, 0);
@@ -202,7 +254,12 @@ static Janet cfun_buffer_word(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_buffer_chars(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_buffer_chars,
+              "(buffer/push-string buffer & xs)",
+              "Push byte sequences onto the end of a buffer. "
+              "Will accept any of strings, keywords, symbols, and buffers. "
+              "Returns the modified buffer. "
+              "Will throw an error if the buffer overflows.") {
     int32_t i;
     janet_arity(argc, 1, -1);
     JanetBuffer *buffer = janet_getbuffer(argv, 0);
@@ -217,14 +274,45 @@ static Janet cfun_buffer_chars(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_buffer_clear(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_buffer_push,
+              "(buffer/push buffer & xs)",
+              "Push both individual bytes and byte sequences to a buffer. For each x in xs, "
+              "push the byte if x is an integer, otherwise push the bytesequence to the buffer. "
+              "Thus, this function behaves like both `buffer/push-string` and `buffer/push-byte`. "
+              "Returns the modified buffer. "
+              "Will throw an error if the buffer overflows.") {
+    int32_t i;
+    janet_arity(argc, 1, -1);
+    JanetBuffer *buffer = janet_getbuffer(argv, 0);
+    for (i = 1; i < argc; i++) {
+        if (janet_checktype(argv[i], JANET_NUMBER)) {
+            janet_buffer_push_u8(buffer, (uint8_t)(janet_getinteger(argv, i) & 0xFF));
+        } else {
+            JanetByteView view = janet_getbytes(argv, i);
+            if (view.bytes == buffer->data) {
+                janet_buffer_ensure(buffer, buffer->count + view.len, 2);
+                view.bytes = buffer->data;
+            }
+            janet_buffer_push_bytes(buffer, view.bytes, view.len);
+        }
+    }
+    return argv[0];
+}
+
+
+JANET_CORE_FN(cfun_buffer_clear,
+              "(buffer/clear buffer)",
+              "Sets the size of a buffer to 0 and empties it. The buffer retains "
+              "its memory so it can be efficiently refilled. Returns the modified buffer.") {
     janet_fixarity(argc, 1);
     JanetBuffer *buffer = janet_getbuffer(argv, 0);
     buffer->count = 0;
     return argv[0];
 }
 
-static Janet cfun_buffer_popn(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_buffer_popn,
+              "(buffer/popn buffer n)",
+              "Removes the last n bytes from the buffer. Returns the modified buffer.") {
     janet_fixarity(argc, 2);
     JanetBuffer *buffer = janet_getbuffer(argv, 0);
     int32_t n = janet_getinteger(argv, 1);
@@ -237,9 +325,14 @@ static Janet cfun_buffer_popn(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_buffer_slice(int32_t argc, Janet *argv) {
-    JanetRange range = janet_getslice(argc, argv);
+JANET_CORE_FN(cfun_buffer_slice,
+              "(buffer/slice bytes &opt start end)",
+              "Takes a slice of a byte sequence from start to end. The range is half open, "
+              "[start, end). Indexes can also be negative, indicating indexing from the end of the "
+              "end of the array. By default, start is 0 and end is the length of the buffer. "
+              "Returns a new buffer.") {
     JanetByteView view = janet_getbytes(argv, 0);
+    JanetRange range = janet_getslice(argc, argv);
     JanetBuffer *buffer = janet_buffer(range.end - range.start);
     if (buffer->data)
         memcpy(buffer->data, view.bytes + range.start, range.end - range.start);
@@ -261,7 +354,9 @@ static void bitloc(int32_t argc, Janet *argv, JanetBuffer **b, int32_t *index, i
     *bit = which_bit;
 }
 
-static Janet cfun_buffer_bitset(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_buffer_bitset,
+              "(buffer/bit-set buffer index)",
+              "Sets the bit at the given bit-index. Returns the buffer.") {
     int bit;
     int32_t index;
     JanetBuffer *buffer;
@@ -270,7 +365,9 @@ static Janet cfun_buffer_bitset(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_buffer_bitclear(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_buffer_bitclear,
+              "(buffer/bit-clear buffer index)",
+              "Clears the bit at the given bit-index. Returns the buffer.") {
     int bit;
     int32_t index;
     JanetBuffer *buffer;
@@ -279,7 +376,9 @@ static Janet cfun_buffer_bitclear(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_buffer_bitget(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_buffer_bitget,
+              "(buffer/bit buffer index)",
+              "Gets the bit at the given bit-index. Returns true if the bit is set, false if not.") {
     int bit;
     int32_t index;
     JanetBuffer *buffer;
@@ -287,7 +386,9 @@ static Janet cfun_buffer_bitget(int32_t argc, Janet *argv) {
     return janet_wrap_boolean(buffer->data[index] & (1 << bit));
 }
 
-static Janet cfun_buffer_bittoggle(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_buffer_bittoggle,
+              "(buffer/bit-toggle buffer index)",
+              "Toggles the bit at the given bit index in buffer. Returns the buffer.") {
     int bit;
     int32_t index;
     JanetBuffer *buffer;
@@ -296,7 +397,11 @@ static Janet cfun_buffer_bittoggle(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_buffer_blit(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_buffer_blit,
+              "(buffer/blit dest src &opt dest-start src-start src-end)",
+              "Insert the contents of src into dest. Can optionally take indices that "
+              "indicate which part of src to copy into which part of dest. Indices can be "
+              "negative to index from the end of src or dest. Returns dest.") {
     janet_arity(argc, 2, 5);
     JanetBuffer *dest = janet_getbuffer(argv, 0);
     JanetByteView src = janet_getbytes(argv, 1);
@@ -315,21 +420,28 @@ static Janet cfun_buffer_blit(int32_t argc, Janet *argv) {
     } else {
         length_src = src.len - offset_src;
     }
-    int64_t last = ((int64_t) offset_dest - offset_src) + length_src;
+    int64_t last = (int64_t) offset_dest + length_src;
     if (last > INT32_MAX)
         janet_panic("buffer blit out of range");
-    janet_buffer_ensure(dest, (int32_t) last, 2);
-    if (last > dest->count) dest->count = (int32_t) last;
-    if (same_buf) {
-        src.bytes = dest->data;
-        memmove(dest->data + offset_dest, src.bytes + offset_src, length_src);
-    } else {
-        memcpy(dest->data + offset_dest, src.bytes + offset_src, length_src);
+    int32_t last32 = (int32_t) last;
+    janet_buffer_ensure(dest, last32, 2);
+    if (last32 > dest->count) dest->count = last32;
+    if (length_src) {
+        if (same_buf) {
+            /* janet_buffer_ensure may have invalidated src */
+            src.bytes = dest->data;
+            memmove(dest->data + offset_dest, src.bytes + offset_src, length_src);
+        } else {
+            memcpy(dest->data + offset_dest, src.bytes + offset_src, length_src);
+        }
     }
     return argv[0];
 }
 
-static Janet cfun_buffer_format(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_buffer_format,
+              "(buffer/format buffer format & args)",
+              "Snprintf like functionality for printing values into a buffer. Returns "
+              " the modified buffer.") {
     janet_arity(argc, 2, -1);
     JanetBuffer *buffer = janet_getbuffer(argv, 0);
     const char *strfrmt = (const char *) janet_getstring(argv, 1);
@@ -337,94 +449,26 @@ static Janet cfun_buffer_format(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static const JanetReg buffer_cfuns[] = {
-    {
-        "buffer/new", cfun_buffer_new,
-        JDOC("(buffer/new capacity)\n\n"
-             "Creates a new, empty buffer with enough memory for capacity bytes. "
-             "Returns a new buffer.")
-    },
-    {
-        "buffer/new-filled", cfun_buffer_new_filled,
-        JDOC("(buffer/new-filled count [, byte=0])\n\n"
-             "Creates a new buffer of length count filled with byte. "
-             "Returns the new buffer.")
-    },
-    {
-        "buffer/push-byte", cfun_buffer_u8,
-        JDOC("(buffer/push-byte buffer x)\n\n"
-             "Append a byte to a buffer. Will expand the buffer as necessary. "
-             "Returns the modified buffer. Will throw an error if the buffer overflows.")
-    },
-    {
-        "buffer/push-word", cfun_buffer_word,
-        JDOC("(buffer/push-word buffer x)\n\n"
-             "Append a machine word to a buffer. The 4 bytes of the integer are appended "
-             "in twos complement, big endian order, unsigned. Returns the modified buffer. Will "
-             "throw an error if the buffer overflows.")
-    },
-    {
-        "buffer/push-string", cfun_buffer_chars,
-        JDOC("(buffer/push-string buffer str)\n\n"
-             "Push a string onto the end of a buffer. Non string values will be converted "
-             "to strings before being pushed. Returns the modified buffer. "
-             "Will throw an error if the buffer overflows.")
-    },
-    {
-        "buffer/popn", cfun_buffer_popn,
-        JDOC("(buffer/popn buffer n)\n\n"
-             "Removes the last n bytes from the buffer. Returns the modified buffer.")
-    },
-    {
-        "buffer/clear", cfun_buffer_clear,
-        JDOC("(buffer/clear buffer)\n\n"
-             "Sets the size of a buffer to 0 and empties it. The buffer retains "
-             "its memory so it can be efficiently refilled. Returns the modified buffer.")
-    },
-    {
-        "buffer/slice", cfun_buffer_slice,
-        JDOC("(buffer/slice bytes [, start=0 [, end=(length bytes)]])\n\n"
-             "Takes a slice of a byte sequence from start to end. The range is half open, "
-             "[start, end). Indexes can also be negative, indicating indexing from the end of the "
-             "end of the array. By default, start is 0 and end is the length of the buffer. "
-             "Returns a new buffer.")
-    },
-    {
-        "buffer/bit-set", cfun_buffer_bitset,
-        JDOC("(buffer/bit-set buffer index)\n\n"
-             "Sets the bit at the given bit-index. Returns the buffer.")
-    },
-    {
-        "buffer/bit-clear", cfun_buffer_bitclear,
-        JDOC("(buffer/bit-clear buffer index)\n\n"
-             "Clears the bit at the given bit-index. Returns the buffer.")
-    },
-    {
-        "buffer/bit", cfun_buffer_bitget,
-        JDOC("(buffer/bit buffer index)\n\n"
-             "Gets the bit at the given bit-index. Returns true if the bit is set, false if not.")
-    },
-    {
-        "buffer/bit-toggle", cfun_buffer_bittoggle,
-        JDOC("(buffer/bit-toggle buffer index)\n\n"
-             "Toggles the bit at the given bit index in buffer. Returns the buffer.")
-    },
-    {
-        "buffer/blit", cfun_buffer_blit,
-        JDOC("(buffer/blit dest src [, dest-start=0 [, src-start=0 [, src-end=-1]]])\n\n"
-             "Insert the contents of src into dest. Can optionally take indices that "
-             "indicate which part of src to copy into which part of dest. Indices can be "
-             "negative to index from the end of src or dest. Returns dest.")
-    },
-    {
-        "buffer/format", cfun_buffer_format,
-        JDOC("(buffer/format buffer format & args)\n\n"
-             "Snprintf like functionality for printing values into a buffer. Returns "
-             " the modified buffer.")
-    },
-    {NULL, NULL, NULL}
-};
-
 void janet_lib_buffer(JanetTable *env) {
-    janet_core_cfuns(env, NULL, buffer_cfuns);
+    JanetRegExt buffer_cfuns[] = {
+        JANET_CORE_REG("buffer/new", cfun_buffer_new),
+        JANET_CORE_REG("buffer/new-filled", cfun_buffer_new_filled),
+        JANET_CORE_REG("buffer/fill", cfun_buffer_fill),
+        JANET_CORE_REG("buffer/trim", cfun_buffer_trim),
+        JANET_CORE_REG("buffer/push-byte", cfun_buffer_u8),
+        JANET_CORE_REG("buffer/push-word", cfun_buffer_word),
+        JANET_CORE_REG("buffer/push-string", cfun_buffer_chars),
+        JANET_CORE_REG("buffer/push", cfun_buffer_push),
+        JANET_CORE_REG("buffer/popn", cfun_buffer_popn),
+        JANET_CORE_REG("buffer/clear", cfun_buffer_clear),
+        JANET_CORE_REG("buffer/slice", cfun_buffer_slice),
+        JANET_CORE_REG("buffer/bit-set", cfun_buffer_bitset),
+        JANET_CORE_REG("buffer/bit-clear", cfun_buffer_bitclear),
+        JANET_CORE_REG("buffer/bit", cfun_buffer_bitget),
+        JANET_CORE_REG("buffer/bit-toggle", cfun_buffer_bittoggle),
+        JANET_CORE_REG("buffer/blit", cfun_buffer_blit),
+        JANET_CORE_REG("buffer/format", cfun_buffer_format),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, buffer_cfuns);
 }

src/core/bytecode.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,6 +21,7 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "gc.h"
 #include "util.h"
@@ -40,6 +41,8 @@ enum JanetInstructionType janet_instructions[JOP_INSTRUCTION_COUNT] = {
     JINT_SSS, /* JOP_MULTIPLY, */
     JINT_SSI, /* JOP_DIVIDE_IMMEDIATE, */
     JINT_SSS, /* JOP_DIVIDE, */
+    JINT_SSS, /* JOP_MODULO, */
+    JINT_SSS, /* JOP_REMAINDER, */
     JINT_SSS, /* JOP_BAND, */
     JINT_SSS, /* JOP_BOR, */
     JINT_SSS, /* JOP_BXOR, */
@@ -55,6 +58,8 @@ enum JanetInstructionType janet_instructions[JOP_INSTRUCTION_COUNT] = {
     JINT_L, /* JOP_JUMP, */
     JINT_SL, /* JOP_JUMP_IF, */
     JINT_SL, /* JOP_JUMP_IF_NOT, */
+    JINT_SL, /* JOP_JUMP_IF_NIL, */
+    JINT_SL, /* JOP_JUMP_IF_NOT_NIL, */
     JINT_SSS, /* JOP_GREATER_THAN, */
     JINT_SSI, /* JOP_GREATER_THAN_IMMEDIATE, */
     JINT_SSS, /* JOP_LESS_THAN, */
@@ -79,6 +84,8 @@ enum JanetInstructionType janet_instructions[JOP_INSTRUCTION_COUNT] = {
     JINT_S, /* JOP_TAILCALL, */
     JINT_SSS, /* JOP_RESUME, */
     JINT_SSU, /* JOP_SIGNAL, */
+    JINT_SSS, /* JOP_PROPAGATE */
+    JINT_SSS, /* JOP_IN, */
     JINT_SSS, /* JOP_GET, */
     JINT_SSS, /* JOP_PUT, */
     JINT_SSU, /* JOP_GET_INDEX, */
@@ -91,15 +98,16 @@ enum JanetInstructionType janet_instructions[JOP_INSTRUCTION_COUNT] = {
     JINT_S, /* JOP_MAKE_TABLE */
     JINT_S, /* JOP_MAKE_TUPLE */
     JINT_S, /* JOP_MAKE_BRACKET_TUPLE */
-    JINT_SSS, /* JOP_NUMERIC_LESS_THAN */
-    JINT_SSS, /* JOP_NUMERIC_LESS_THAN_EQUAL */
-    JINT_SSS, /* JOP_NUMERIC_GREATER_THAN */
-    JINT_SSS, /* JOP_NUMERIC_GREATER_THAN_EQUAL */
-    JINT_SSS /* JOP_NUMERIC_EQUAL */
+    JINT_SSS, /* JOP_GREATER_THAN_EQUAL */
+    JINT_SSS, /* JOP_LESS_THAN_EQUAL */
+    JINT_SSS, /* JOP_NEXT */
+    JINT_SSS, /* JOP_NOT_EQUALS, */
+    JINT_SSI, /* JOP_NOT_EQUALS_IMMEDIATE, */
+    JINT_SSS /* JOP_CANCEL, */
 };
 
 /* Verify some bytecode */
-int32_t janet_verify(JanetFuncDef *def) {
+int janet_verify(JanetFuncDef *def) {
     int vargs = !!(def->flags & JANET_FUNCDEF_FLAG_VARARG);
     int32_t i;
     int32_t maxslot = def->arity + vargs;
@@ -202,11 +210,12 @@ int32_t janet_verify(JanetFuncDef *def) {
 
 /* Allocate an empty funcdef. This function may have added functionality
  * as commonalities between asm and compile arise. */
-JanetFuncDef *janet_funcdef_alloc() {
+JanetFuncDef *janet_funcdef_alloc(void) {
     JanetFuncDef *def = janet_gcalloc(JANET_MEMORY_FUNCDEF, sizeof(JanetFuncDef));
     def->environments = NULL;
     def->constants = NULL;
     def->bytecode = NULL;
+    def->closure_bitset = NULL;
     def->flags = 0;
     def->slotcount = 0;
     def->arity = 0;

src/core/capi.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,21 +21,56 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "state.h"
 #include "fiber.h"
 #endif
 
-void janet_panicv(Janet message) {
-    if (janet_vm_return_reg != NULL) {
-        *janet_vm_return_reg = message;
-        longjmp(*janet_vm_jmp_buf, 1);
+#ifndef JANET_SINGLE_THREADED
+#ifndef JANET_WINDOWS
+#include <pthread.h>
+#else
+#include <windows.h>
+#endif
+#endif
+
+JANET_NO_RETURN static void janet_top_level_signal(const char *msg) {
+#ifdef JANET_TOP_LEVEL_SIGNAL
+    JANET_TOP_LEVEL_SIGNAL(msg);
+#else
+    fputs(msg, stdout);
+# ifdef JANET_SINGLE_THREADED
+    exit(-1);
+# elif defined(JANET_WINDOWS)
+    ExitThread(-1);
+# else
+    pthread_exit(NULL);
+# endif
+#endif
+}
+
+void janet_signalv(JanetSignal sig, Janet message) {
+    if (janet_vm.return_reg != NULL) {
+        *janet_vm.return_reg = message;
+        if (NULL != janet_vm.fiber) {
+            janet_vm.fiber->flags |= JANET_FIBER_DID_LONGJUMP;
+        }
+#if defined(JANET_BSD) || defined(JANET_APPLE)
+        _longjmp(*janet_vm.signal_buf, sig);
+#else
+        longjmp(*janet_vm.signal_buf, sig);
+#endif
     } else {
-        fputs((const char *)janet_formatc("janet top level panic - %v\n", message), stdout);
-        exit(1);
+        const char *str = (const char *)janet_formatc("janet top level signal - %v\n", message);
+        janet_top_level_signal(str);
     }
 }
 
+void janet_panicv(Janet message) {
+    janet_signalv(JANET_SIGNAL_ERROR, message);
+}
+
 void janet_panicf(const char *format, ...) {
     va_list args;
     const uint8_t *ret;
@@ -44,26 +79,13 @@ void janet_panicf(const char *format, ...) {
     while (format[len]) len++;
     janet_buffer_init(&buffer, len);
     va_start(args, format);
-    janet_formatb(&buffer, format, args);
+    janet_formatbv(&buffer, format, args);
     va_end(args);
     ret = janet_string(buffer.data, buffer.count);
     janet_buffer_deinit(&buffer);
     janet_panics(ret);
 }
 
-void janet_printf(const char *format, ...) {
-    va_list args;
-    JanetBuffer buffer;
-    int32_t len = 0;
-    while (format[len]) len++;
-    janet_buffer_init(&buffer, len);
-    va_start(args, format);
-    janet_formatb(&buffer, format, args);
-    va_end(args);
-    fwrite(buffer.data, buffer.count, 1, stdout);
-    janet_buffer_deinit(&buffer);
-}
-
 void janet_panic(const char *message) {
     janet_panicv(janet_cstringv(message));
 }
@@ -101,14 +123,47 @@ type janet_get##name(const Janet *argv, int32_t n) { \
     return janet_unwrap_##name(x); \
 }
 
-Janet janet_getmethod(const uint8_t *method, const JanetMethod *methods) {
+#define DEFINE_OPT(name, NAME, type) \
+type janet_opt##name(const Janet *argv, int32_t argc, int32_t n, type dflt) { \
+    if (n >= argc) return dflt; \
+    if (janet_checktype(argv[n], JANET_NIL)) return dflt; \
+    return janet_get##name(argv, n); \
+}
+
+#define DEFINE_OPTLEN(name, NAME, type) \
+type janet_opt##name(const Janet *argv, int32_t argc, int32_t n, int32_t dflt_len) { \
+    if (n >= argc || janet_checktype(argv[n], JANET_NIL)) {\
+        return janet_##name(dflt_len); \
+    }\
+    return janet_get##name(argv, n); \
+}
+
+int janet_getmethod(const uint8_t *method, const JanetMethod *methods, Janet *out) {
     while (methods->name) {
-        if (!janet_cstrcmp(method, methods->name))
-            return janet_wrap_cfunction(methods->cfun);
+        if (!janet_cstrcmp(method, methods->name)) {
+            *out = janet_wrap_cfunction(methods->cfun);
+            return 1;
+        }
         methods++;
     }
-    janet_panicf("unknown method %S invoked", method);
-    return janet_wrap_nil();
+    return 0;
+}
+
+Janet janet_nextmethod(const JanetMethod *methods, Janet key) {
+    if (!janet_checktype(key, JANET_NIL)) {
+        while (methods->name) {
+            if (janet_keyeq(key, methods->name)) {
+                methods++;
+                break;
+            }
+            methods++;
+        }
+    }
+    if (methods->name) {
+        return janet_ckeywordv(methods->name);
+    } else {
+        return janet_wrap_nil();
+    }
 }
 
 DEFINE_GETTER(number, NUMBER, double)
@@ -126,19 +181,80 @@ DEFINE_GETTER(cfunction, CFUNCTION, JanetCFunction)
 DEFINE_GETTER(boolean, BOOLEAN, int)
 DEFINE_GETTER(pointer, POINTER, void *)
 
+DEFINE_OPT(number, NUMBER, double)
+DEFINE_OPT(tuple, TUPLE, const Janet *)
+DEFINE_OPT(struct, STRUCT, const JanetKV *)
+DEFINE_OPT(string, STRING, const uint8_t *)
+DEFINE_OPT(keyword, KEYWORD, const uint8_t *)
+DEFINE_OPT(symbol, SYMBOL, const uint8_t *)
+DEFINE_OPT(fiber, FIBER, JanetFiber *)
+DEFINE_OPT(function, FUNCTION, JanetFunction *)
+DEFINE_OPT(cfunction, CFUNCTION, JanetCFunction)
+DEFINE_OPT(boolean, BOOLEAN, int)
+DEFINE_OPT(pointer, POINTER, void *)
+
+DEFINE_OPTLEN(buffer, BUFFER, JanetBuffer *)
+DEFINE_OPTLEN(table, TABLE, JanetTable *)
+DEFINE_OPTLEN(array, ARRAY, JanetArray *)
+
+const char *janet_optcstring(const Janet *argv, int32_t argc, int32_t n, const char *dflt) {
+    if (n >= argc || janet_checktype(argv[n], JANET_NIL)) {
+        return dflt;
+    }
+    return janet_getcstring(argv, n);
+}
+
+#undef DEFINE_GETTER
+#undef DEFINE_OPT
+#undef DEFINE_OPTLEN
+
 const char *janet_getcstring(const Janet *argv, int32_t n) {
     const uint8_t *jstr = janet_getstring(argv, n);
     const char *cstr = (const char *)jstr;
     if (strlen(cstr) != (size_t) janet_string_length(jstr)) {
-        janet_panicf("string %v contains embedded 0s");
+        janet_panic("string contains embedded 0s");
     }
     return cstr;
 }
 
+int32_t janet_getnat(const Janet *argv, int32_t n) {
+    Janet x = argv[n];
+    if (!janet_checkint(x)) goto bad;
+    int32_t ret = janet_unwrap_integer(x);
+    if (ret < 0) goto bad;
+    return ret;
+bad:
+    janet_panicf("bad slot #%d, expected non-negative 32 bit signed integer, got %v", n, x);
+}
+
+JanetAbstract janet_checkabstract(Janet x, const JanetAbstractType *at) {
+    if (!janet_checktype(x, JANET_ABSTRACT)) return NULL;
+    JanetAbstract a = janet_unwrap_abstract(x);
+    if (janet_abstract_type(a) != at) return NULL;
+    return a;
+}
+
+static int janet_strlike_cmp(JanetType type, Janet x, const char *cstring) {
+    if (janet_type(x) != type) return 0;
+    return !janet_cstrcmp(janet_unwrap_string(x), cstring);
+}
+
+int janet_keyeq(Janet x, const char *cstring) {
+    return janet_strlike_cmp(JANET_KEYWORD, x, cstring);
+}
+
+int janet_streq(Janet x, const char *cstring) {
+    return janet_strlike_cmp(JANET_STRING, x, cstring);
+}
+
+int janet_symeq(Janet x, const char *cstring) {
+    return janet_strlike_cmp(JANET_SYMBOL, x, cstring);
+}
+
 int32_t janet_getinteger(const Janet *argv, int32_t n) {
     Janet x = argv[n];
     if (!janet_checkint(x)) {
-        janet_panicf("bad slot #%d, expected integer, got %v", n, x);
+        janet_panicf("bad slot #%d, expected 32 bit signed integer, got %v", n, x);
     }
     return janet_unwrap_integer(x);
 }
@@ -146,7 +262,7 @@ int32_t janet_getinteger(const Janet *argv, int32_t n) {
 int64_t janet_getinteger64(const Janet *argv, int32_t n) {
     Janet x = argv[n];
     if (!janet_checkint64(x)) {
-        janet_panicf("bad slot #%d, expected 64 bit integer, got %v", n, x);
+        janet_panicf("bad slot #%d, expected 64 bit signed integer, got %v", n, x);
     }
     return (int64_t) janet_unwrap_number(x);
 }
@@ -161,18 +277,20 @@ size_t janet_getsize(const Janet *argv, int32_t n) {
 
 int32_t janet_gethalfrange(const Janet *argv, int32_t n, int32_t length, const char *which) {
     int32_t raw = janet_getinteger(argv, n);
-    if (raw < 0) raw += length + 1;
-    if (raw < 0 || raw > length)
-        janet_panicf("%s index %d out of range [0,%d]", which, raw, length);
-    return raw;
+    int32_t not_raw = raw;
+    if (not_raw < 0) not_raw += length + 1;
+    if (not_raw < 0 || not_raw > length)
+        janet_panicf("%s index %d out of range [%d,%d]", which, raw, -length - 1, length);
+    return not_raw;
 }
 
 int32_t janet_getargindex(const Janet *argv, int32_t n, int32_t length, const char *which) {
     int32_t raw = janet_getinteger(argv, n);
-    if (raw < 0) raw += length;
-    if (raw < 0 || raw > length)
-        janet_panicf("%s index %d out of range [0,%d)", which, raw, length);
-    return raw;
+    int32_t not_raw = raw;
+    if (not_raw < 0) not_raw += length;
+    if (not_raw < 0 || not_raw > length)
+        janet_panicf("%s index %d out of range [%d,%d)", which, raw, -length, length);
+    return not_raw;
 }
 
 JanetView janet_getindexed(const Janet *argv, int32_t n) {
@@ -222,11 +340,17 @@ JanetRange janet_getslice(int32_t argc, const Janet *argv) {
         range.start = 0;
         range.end = length;
     } else if (argc == 2) {
-        range.start = janet_gethalfrange(argv, 1, length, "start");
+        range.start = janet_checktype(argv[1], JANET_NIL)
+                      ? 0
+                      : janet_gethalfrange(argv, 1, length, "start");
         range.end = length;
     } else {
-        range.start = janet_gethalfrange(argv, 1, length, "start");
-        range.end = janet_gethalfrange(argv, 2, length, "end");
+        range.start = janet_checktype(argv[1], JANET_NIL)
+                      ? 0
+                      : janet_gethalfrange(argv, 1, length, "start");
+        range.end = janet_checktype(argv[2], JANET_NIL)
+                    ? length
+                    : janet_gethalfrange(argv, 2, length, "end");
         if (range.end < range.start)
             range.end = range.start;
     }
@@ -234,20 +358,79 @@ JanetRange janet_getslice(int32_t argc, const Janet *argv) {
 }
 
 Janet janet_dyn(const char *name) {
-    if (!janet_vm_fiber) return janet_wrap_nil();
-    if (janet_vm_fiber->env) {
-        return janet_table_get(janet_vm_fiber->env, janet_ckeywordv(name));
+    if (!janet_vm.fiber) {
+        if (!janet_vm.top_dyns) return janet_wrap_nil();
+        return janet_table_get(janet_vm.top_dyns, janet_ckeywordv(name));
+    }
+    if (janet_vm.fiber->env) {
+        return janet_table_get(janet_vm.fiber->env, janet_ckeywordv(name));
     } else {
         return janet_wrap_nil();
     }
 }
 
 void janet_setdyn(const char *name, Janet value) {
-    if (!janet_vm_fiber) return;
-    if (!janet_vm_fiber->env) {
-        janet_vm_fiber->env = janet_table(1);
+    if (!janet_vm.fiber) {
+        if (!janet_vm.top_dyns) janet_vm.top_dyns = janet_table(10);
+        janet_table_put(janet_vm.top_dyns, janet_ckeywordv(name), value);
+    } else {
+        if (!janet_vm.fiber->env) {
+            janet_vm.fiber->env = janet_table(1);
+        }
+        janet_table_put(janet_vm.fiber->env, janet_ckeywordv(name), value);
     }
-    janet_table_put(janet_vm_fiber->env, janet_ckeywordv(name), value);
+}
+
+uint64_t janet_getflags(const Janet *argv, int32_t n, const char *flags) {
+    uint64_t ret = 0;
+    const uint8_t *keyw = janet_getkeyword(argv, n);
+    int32_t klen = janet_string_length(keyw);
+    int32_t flen = (int32_t) strlen(flags);
+    if (flen > 64) {
+        flen = 64;
+    }
+    for (int32_t j = 0; j < klen; j++) {
+        for (int32_t i = 0; i < flen; i++) {
+            if (((uint8_t) flags[i]) == keyw[j]) {
+                ret |= 1ULL << i;
+                goto found;
+            }
+        }
+        janet_panicf("unexpected flag %c, expected one of \"%s\"", (char) keyw[j], flags);
+    found:
+        ;
+    }
+    return ret;
+}
+
+int32_t janet_optnat(const Janet *argv, int32_t argc, int32_t n, int32_t dflt) {
+    if (argc <= n) return dflt;
+    if (janet_checktype(argv[n], JANET_NIL)) return dflt;
+    return janet_getnat(argv, n);
+}
+
+int32_t janet_optinteger(const Janet *argv, int32_t argc, int32_t n, int32_t dflt) {
+    if (argc <= n) return dflt;
+    if (janet_checktype(argv[n], JANET_NIL)) return dflt;
+    return janet_getinteger(argv, n);
+}
+
+int64_t janet_optinteger64(const Janet *argv, int32_t argc, int32_t n, int64_t dflt) {
+    if (argc <= n) return dflt;
+    if (janet_checktype(argv[n], JANET_NIL)) return dflt;
+    return janet_getinteger64(argv, n);
+}
+
+size_t janet_optsize(const Janet *argv, int32_t argc, int32_t n, size_t dflt) {
+    if (argc <= n) return dflt;
+    if (janet_checktype(argv[n], JANET_NIL)) return dflt;
+    return janet_getsize(argv, n);
+}
+
+void *janet_optabstract(const Janet *argv, int32_t argc, int32_t n, const JanetAbstractType *at, void *dflt) {
+    if (argc <= n) return dflt;
+    if (janet_checktype(argv[n], JANET_NIL)) return dflt;
+    return janet_getabstract(argv, n, at);
 }
 
 /* Some definitions for function-like macros */

src/core/cfuns.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,20 +21,31 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "compile.h"
 #include "emit.h"
 #include "vector.h"
 #endif
 
-static int fixarity0(JanetFopts opts, JanetSlot *args) {
+static int arity1or2(JanetFopts opts, JanetSlot *args) {
     (void) opts;
-    return janet_v_count(args) == 0;
+    int32_t arity = janet_v_count(args);
+    return arity == 1 || arity == 2;
+}
+static int arity2or3(JanetFopts opts, JanetSlot *args) {
+    (void) opts;
+    int32_t arity = janet_v_count(args);
+    return arity == 2 || arity == 3;
 }
 static int fixarity1(JanetFopts opts, JanetSlot *args) {
     (void) opts;
     return janet_v_count(args) == 1;
 }
+static int maxarity1(JanetFopts opts, JanetSlot *args) {
+    (void) opts;
+    return janet_v_count(args) <= 1;
+}
 static int minarity2(JanetFopts opts, JanetSlot *args) {
     (void) opts;
     return janet_v_count(args) >= 2;
@@ -62,43 +73,139 @@ static JanetSlot genericSSI(JanetFopts opts, int op, JanetSlot s, int32_t imm) {
     return target;
 }
 
+/* Emit an insruction that implements a form by itself. */
+static JanetSlot opfunction(
+    JanetFopts opts,
+    JanetSlot *args,
+    int op,
+    Janet defaultArg2) {
+    JanetCompiler *c = opts.compiler;
+    int32_t len;
+    len = janet_v_count(args);
+    JanetSlot t;
+    if (len == 1) {
+        t = janetc_gettarget(opts);
+        janetc_emit_sss(c, op, t, args[0], janetc_cslot(defaultArg2), 1);
+        return t;
+    } else {
+        /* len == 2 */
+        t = janetc_gettarget(opts);
+        janetc_emit_sss(c, op, t, args[0], args[1], 1);
+    }
+    return t;
+}
+
+/* Check if a value can be coerced to an immediate value */
+static int can_be_imm(Janet x, int8_t *out) {
+    if (!janet_checkint(x)) return 0;
+    int32_t integer = janet_unwrap_integer(x);
+    if (integer > 127 || integer < -127) return 0;
+    *out = (int8_t) integer;
+    return 1;
+}
+
+/* Check if a slot can be coerced to an immediate value */
+static int can_slot_be_imm(JanetSlot s, int8_t *out) {
+    if (!(s.flags & JANET_SLOT_CONSTANT)) return 0;
+    return can_be_imm(s.constant, out);
+}
+
 /* Emit a series of instructions instead of a function call to a math op */
 static JanetSlot opreduce(
     JanetFopts opts,
     JanetSlot *args,
     int op,
+    int opim,
     Janet nullary) {
     JanetCompiler *c = opts.compiler;
     int32_t i, len;
+    int8_t imm = 0;
+    int neg = opim < 0;
+    if (opim < 0) opim = -opim;
     len = janet_v_count(args);
     JanetSlot t;
     if (len == 0) {
         return janetc_cslot(nullary);
     } else if (len == 1) {
         t = janetc_gettarget(opts);
-        janetc_emit_sss(c, op, t, janetc_cslot(nullary), args[0], 1);
+        /* Special case subtract to be times -1 */
+        if (op == JOP_SUBTRACT) {
+            janetc_emit_ssi(c, JOP_MULTIPLY_IMMEDIATE, t, args[0], -1, 1);
+        } else {
+            janetc_emit_sss(c, op, t, janetc_cslot(nullary), args[0], 1);
+        }
         return t;
     }
     t = janetc_gettarget(opts);
-    janetc_emit_sss(c, op, t, args[0], args[1], 1);
-    for (i = 2; i < len; i++)
-        janetc_emit_sss(c, op, t, t, args[i], 1);
+    if (opim && can_slot_be_imm(args[1], &imm)) {
+        janetc_emit_ssi(c, opim, t, args[0], neg ? -imm : imm, 1);
+    } else {
+        janetc_emit_sss(c, op, t, args[0], args[1], 1);
+    }
+    for (i = 2; i < len; i++) {
+        if (opim && can_slot_be_imm(args[i], &imm)) {
+            janetc_emit_ssi(c, opim, t, t, neg ? -imm : imm, 1);
+        } else {
+            janetc_emit_sss(c, op, t, t, args[i], 1);
+        }
+    }
     return t;
 }
 
 /* Function optimizers */
 
+static JanetSlot do_propagate(JanetFopts opts, JanetSlot *args) {
+    return opreduce(opts, args, JOP_PROPAGATE, 0, janet_wrap_nil());
+}
 static JanetSlot do_error(JanetFopts opts, JanetSlot *args) {
     janetc_emit_s(opts.compiler, JOP_ERROR, args[0], 0);
     return janetc_cslot(janet_wrap_nil());
 }
 static JanetSlot do_debug(JanetFopts opts, JanetSlot *args) {
     (void)args;
-    janetc_emit(opts.compiler, JOP_SIGNAL | (2 << 24));
-    return janetc_cslot(janet_wrap_nil());
+    int32_t len = janet_v_count(args);
+    JanetSlot t = janetc_gettarget(opts);
+    janetc_emit_ssu(opts.compiler, JOP_SIGNAL, t,
+                    (len == 1) ? args[0] : janetc_cslot(janet_wrap_nil()),
+                    JANET_SIGNAL_DEBUG,
+                    1);
+    return t;
+}
+static JanetSlot do_in(JanetFopts opts, JanetSlot *args) {
+    return opreduce(opts, args, JOP_IN, 0, janet_wrap_nil());
 }
 static JanetSlot do_get(JanetFopts opts, JanetSlot *args) {
-    return opreduce(opts, args, JOP_GET, janet_wrap_nil());
+    if (janet_v_count(args) == 3) {
+        JanetCompiler *c = opts.compiler;
+        JanetSlot t = janetc_gettarget(opts);
+        int target_is_default = janetc_sequal(t, args[2]);
+        JanetSlot dflt_slot = args[2];
+        if (target_is_default) {
+            dflt_slot = janetc_farslot(c);
+            janetc_copy(c, dflt_slot, t);
+        }
+        janetc_emit_sss(c, JOP_GET, t, args[0], args[1], 1);
+        int32_t label = janetc_emit_si(c, JOP_JUMP_IF_NOT_NIL, t, 0, 0);
+        janetc_copy(c, t, dflt_slot);
+        if (target_is_default) janetc_freeslot(c, dflt_slot);
+        int32_t current = janet_v_count(c->buffer);
+        c->buffer[label] |= (current - label) << 16;
+        return t;
+    } else {
+        return opreduce(opts, args, JOP_GET, 0, janet_wrap_nil());
+    }
+}
+static JanetSlot do_next(JanetFopts opts, JanetSlot *args) {
+    return opfunction(opts, args, JOP_NEXT, janet_wrap_nil());
+}
+static JanetSlot do_modulo(JanetFopts opts, JanetSlot *args) {
+    return opreduce(opts, args, JOP_MODULO, 0, janet_wrap_nil());
+}
+static JanetSlot do_remainder(JanetFopts opts, JanetSlot *args) {
+    return opreduce(opts, args, JOP_REMAINDER, 0, janet_wrap_nil());
+}
+static JanetSlot do_cmp(JanetFopts opts, JanetSlot *args) {
+    return opreduce(opts, args, JOP_COMPARE, 0, janet_wrap_nil());
 }
 static JanetSlot do_put(JanetFopts opts, JanetSlot *args) {
     if (opts.flags & JANET_FOPTS_DROP) {
@@ -115,10 +222,17 @@ static JanetSlot do_length(JanetFopts opts, JanetSlot *args) {
     return genericSS(opts, JOP_LENGTH, args[0]);
 }
 static JanetSlot do_yield(JanetFopts opts, JanetSlot *args) {
-    return genericSSI(opts, JOP_SIGNAL, args[0], 3);
+    if (janet_v_count(args) == 0) {
+        return genericSSI(opts, JOP_SIGNAL, janetc_cslot(janet_wrap_nil()), 3);
+    } else {
+        return genericSSI(opts, JOP_SIGNAL, args[0], 3);
+    }
 }
 static JanetSlot do_resume(JanetFopts opts, JanetSlot *args) {
-    return opreduce(opts, args, JOP_RESUME, janet_wrap_nil());
+    return opfunction(opts, args, JOP_RESUME, janet_wrap_nil());
+}
+static JanetSlot do_cancel(JanetFopts opts, JanetSlot *args) {
+    return opfunction(opts, args, JOP_CANCEL, janet_wrap_nil());
 }
 static JanetSlot do_apply(JanetFopts opts, JanetSlot *args) {
     /* Push phase */
@@ -148,34 +262,34 @@ static JanetSlot do_apply(JanetFopts opts, JanetSlot *args) {
 /* Variadic operators specialization */
 
 static JanetSlot do_add(JanetFopts opts, JanetSlot *args) {
-    return opreduce(opts, args, JOP_ADD, janet_wrap_integer(0));
+    return opreduce(opts, args, JOP_ADD, JOP_ADD_IMMEDIATE, janet_wrap_integer(0));
 }
 static JanetSlot do_sub(JanetFopts opts, JanetSlot *args) {
-    return opreduce(opts, args, JOP_SUBTRACT, janet_wrap_integer(0));
+    return opreduce(opts, args, JOP_SUBTRACT, -JOP_ADD_IMMEDIATE, janet_wrap_integer(0));
 }
 static JanetSlot do_mul(JanetFopts opts, JanetSlot *args) {
-    return opreduce(opts, args, JOP_MULTIPLY, janet_wrap_integer(1));
+    return opreduce(opts, args, JOP_MULTIPLY, JOP_MULTIPLY_IMMEDIATE, janet_wrap_integer(1));
 }
 static JanetSlot do_div(JanetFopts opts, JanetSlot *args) {
-    return opreduce(opts, args, JOP_DIVIDE, janet_wrap_integer(1));
+    return opreduce(opts, args, JOP_DIVIDE, JOP_DIVIDE_IMMEDIATE, janet_wrap_integer(1));
 }
 static JanetSlot do_band(JanetFopts opts, JanetSlot *args) {
-    return opreduce(opts, args, JOP_BAND, janet_wrap_integer(-1));
+    return opreduce(opts, args, JOP_BAND, 0, janet_wrap_integer(-1));
 }
 static JanetSlot do_bor(JanetFopts opts, JanetSlot *args) {
-    return opreduce(opts, args, JOP_BOR, janet_wrap_integer(0));
+    return opreduce(opts, args, JOP_BOR, 0, janet_wrap_integer(0));
 }
 static JanetSlot do_bxor(JanetFopts opts, JanetSlot *args) {
-    return opreduce(opts, args, JOP_BXOR, janet_wrap_integer(0));
+    return opreduce(opts, args, JOP_BXOR, 0, janet_wrap_integer(0));
 }
 static JanetSlot do_lshift(JanetFopts opts, JanetSlot *args) {
-    return opreduce(opts, args, JOP_SHIFT_LEFT, janet_wrap_integer(1));
+    return opreduce(opts, args, JOP_SHIFT_LEFT, JOP_SHIFT_LEFT_IMMEDIATE, janet_wrap_integer(1));
 }
 static JanetSlot do_rshift(JanetFopts opts, JanetSlot *args) {
-    return opreduce(opts, args, JOP_SHIFT_RIGHT, janet_wrap_integer(1));
+    return opreduce(opts, args, JOP_SHIFT_RIGHT, JOP_SHIFT_RIGHT_IMMEDIATE, janet_wrap_integer(1));
 }
 static JanetSlot do_rshiftu(JanetFopts opts, JanetSlot *args) {
-    return opreduce(opts, args, JOP_SHIFT_RIGHT, janet_wrap_integer(1));
+    return opreduce(opts, args, JOP_SHIFT_RIGHT_UNSIGNED, JOP_SHIFT_RIGHT_UNSIGNED_IMMEDIATE, janet_wrap_integer(1));
 }
 static JanetSlot do_bnot(JanetFopts opts, JanetSlot *args) {
     return genericSS(opts, JOP_BNOT, args[0]);
@@ -186,9 +300,11 @@ static JanetSlot compreduce(
     JanetFopts opts,
     JanetSlot *args,
     int op,
+    int opim,
     int invert) {
     JanetCompiler *c = opts.compiler;
     int32_t i, len;
+    int8_t imm = 0;
     len = janet_v_count(args);
     int32_t *labels = NULL;
     JanetSlot t;
@@ -199,19 +315,17 @@ static JanetSlot compreduce(
     }
     t = janetc_gettarget(opts);
     for (i = 1; i < len; i++) {
-        janetc_emit_sss(c, op, t, args[i - 1], args[i], 1);
+        if (opim && can_slot_be_imm(args[i], &imm)) {
+            janetc_emit_ssi(c, opim, t, args[i - 1], imm, 1);
+        } else {
+            janetc_emit_sss(c, op, t, args[i - 1], args[i], 1);
+        }
         if (i != (len - 1)) {
-            int32_t label = janetc_emit_si(c, JOP_JUMP_IF_NOT, t, 0, 1);
+            int32_t label = janetc_emit_si(c, invert ? JOP_JUMP_IF : JOP_JUMP_IF_NOT, t, 0, 1);
             janet_v_push(labels, label);
         }
     }
     int32_t end = janet_v_count(c->buffer);
-    if (invert) {
-        janetc_emit_si(c, JOP_JUMP_IF, t, 3, 0);
-        janetc_emit_s(c, JOP_LOAD_TRUE, t, 1);
-        janetc_emit(c, JOP_JUMP | (2 << 8));
-        janetc_emit_s(c, JOP_LOAD_FALSE, t, 1);
-    }
     for (i = 0; i < janet_v_count(labels); i++) {
         int32_t label = labels[i];
         c->buffer[label] |= ((end - label) << 16);
@@ -220,51 +334,33 @@ static JanetSlot compreduce(
     return t;
 }
 
-static JanetSlot do_order_gt(JanetFopts opts, JanetSlot *args) {
-    return compreduce(opts, args, JOP_GREATER_THAN, 0);
-}
-static JanetSlot do_order_lt(JanetFopts opts, JanetSlot *args) {
-    return compreduce(opts, args, JOP_LESS_THAN, 0);
-}
-static JanetSlot do_order_gte(JanetFopts opts, JanetSlot *args) {
-    return compreduce(opts, args, JOP_LESS_THAN, 1);
-}
-static JanetSlot do_order_lte(JanetFopts opts, JanetSlot *args) {
-    return compreduce(opts, args, JOP_GREATER_THAN, 1);
-}
-static JanetSlot do_order_eq(JanetFopts opts, JanetSlot *args) {
-    return compreduce(opts, args, JOP_EQUALS, 0);
-}
-static JanetSlot do_order_neq(JanetFopts opts, JanetSlot *args) {
-    return compreduce(opts, args, JOP_EQUALS, 1);
-}
 static JanetSlot do_gt(JanetFopts opts, JanetSlot *args) {
-    return compreduce(opts, args, JOP_NUMERIC_GREATER_THAN, 0);
+    return compreduce(opts, args, JOP_GREATER_THAN, JOP_GREATER_THAN_IMMEDIATE, 0);
 }
 static JanetSlot do_lt(JanetFopts opts, JanetSlot *args) {
-    return compreduce(opts, args, JOP_NUMERIC_LESS_THAN, 0);
+    return compreduce(opts, args, JOP_LESS_THAN, JOP_LESS_THAN_IMMEDIATE, 0);
 }
 static JanetSlot do_gte(JanetFopts opts, JanetSlot *args) {
-    return compreduce(opts, args, JOP_NUMERIC_GREATER_THAN_EQUAL, 0);
+    return compreduce(opts, args, JOP_GREATER_THAN_EQUAL, 0, 0);
 }
 static JanetSlot do_lte(JanetFopts opts, JanetSlot *args) {
-    return compreduce(opts, args, JOP_NUMERIC_LESS_THAN_EQUAL, 0);
+    return compreduce(opts, args, JOP_LESS_THAN_EQUAL, 0, 0);
 }
 static JanetSlot do_eq(JanetFopts opts, JanetSlot *args) {
-    return compreduce(opts, args, JOP_NUMERIC_EQUAL, 0);
+    return compreduce(opts, args, JOP_EQUALS, JOP_EQUALS_IMMEDIATE, 0);
 }
 static JanetSlot do_neq(JanetFopts opts, JanetSlot *args) {
-    return compreduce(opts, args, JOP_NUMERIC_EQUAL, 1);
+    return compreduce(opts, args, JOP_NOT_EQUALS, JOP_NOT_EQUALS_IMMEDIATE, 1);
 }
 
 /* Arranged by tag */
 static const JanetFunOptimizer optimizers[] = {
-    {fixarity0, do_debug},
+    {maxarity1, do_debug},
     {fixarity1, do_error},
     {minarity2, do_apply},
-    {fixarity1, do_yield},
-    {fixarity2, do_resume},
-    {fixarity2, do_get},
+    {maxarity1, do_yield},
+    {arity1or2, do_resume},
+    {fixarity2, do_in},
     {fixarity3, do_put},
     {fixarity1, do_length},
     {NULL, do_add},
@@ -278,18 +374,19 @@ static const JanetFunOptimizer optimizers[] = {
     {NULL, do_rshift},
     {NULL, do_rshiftu},
     {fixarity1, do_bnot},
-    {NULL, do_order_gt},
-    {NULL, do_order_lt},
-    {NULL, do_order_gte},
-    {NULL, do_order_lte},
-    {NULL, do_order_eq},
-    {NULL, do_order_neq},
     {NULL, do_gt},
     {NULL, do_lt},
     {NULL, do_gte},
     {NULL, do_lte},
     {NULL, do_eq},
-    {NULL, do_neq}
+    {NULL, do_neq},
+    {fixarity2, do_propagate},
+    {arity2or3, do_get},
+    {arity1or2, do_next},
+    {fixarity2, do_modulo},
+    {fixarity2, do_remainder},
+    {fixarity2, do_cmp},
+    {fixarity2, do_cancel},
 };
 
 const JanetFunOptimizer *janetc_funopt(uint32_t flags) {

src/core/compile.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,6 +21,7 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "compile.h"
 #include "emit.h"
@@ -52,6 +53,36 @@ void janetc_cerror(JanetCompiler *c, const char *m) {
     janetc_error(c, janet_cstring(m));
 }
 
+static const char *janet_lint_level_names[] = {
+    "relaxed",
+    "normal",
+    "strict"
+};
+
+/* Emit compiler linter messages */
+void janetc_lintf(JanetCompiler *c, JanetCompileLintLevel level, const char *format, ...) {
+    if (NULL != c->lints) {
+        /* format message */
+        va_list args;
+        JanetBuffer buffer;
+        int32_t len = 0;
+        while (format[len]) len++;
+        janet_buffer_init(&buffer, len);
+        va_start(args, format);
+        janet_formatbv(&buffer, format, args);
+        va_end(args);
+        const uint8_t *str = janet_string(buffer.data, buffer.count);
+        janet_buffer_deinit(&buffer);
+        /* construct linting payload */
+        Janet *payload = janet_tuple_begin(4);
+        payload[0] = janet_ckeywordv(janet_lint_level_names[level]);
+        payload[1] = c->current_mapping.line == -1 ? janet_wrap_nil() : janet_wrap_integer(c->current_mapping.line);
+        payload[2] = c->current_mapping.column == -1 ? janet_wrap_nil() : janet_wrap_integer(c->current_mapping.column);
+        payload[3] = janet_wrap_string(str);
+        janet_array_push(c->lints, janet_wrap_tuple(janet_tuple_end(payload)));
+    }
+}
+
 /* Free a slot */
 void janetc_freeslot(JanetCompiler *c, JanetSlot s) {
     if (s.flags & (JANET_SLOT_CONSTANT | JANET_SLOT_REF | JANET_SLOT_NAMED)) return;
@@ -101,6 +132,7 @@ void janetc_scope(JanetScope *s, JanetCompiler *c, int flags, const char *name)
     scope.bytecode_start = janet_v_count(c->buffer);
     scope.flags = flags;
     scope.parent = c->scope;
+    janetc_regalloc_init(&scope.ua);
     /* Inherit slots */
     if ((!(flags & JANET_SCOPE_FUNCTION)) && c->scope) {
         janetc_regalloc_clone(&scope.ra, &(c->scope->ra));
@@ -148,6 +180,7 @@ void janetc_popscope(JanetCompiler *c) {
     janet_v_free(oldscope->envs);
     janet_v_free(oldscope->defs);
     janetc_regalloc_deinit(&oldscope->ra);
+    janetc_regalloc_deinit(&oldscope->ua);
     /* Update pointer */
     if (newscope)
         newscope->child = NULL;
@@ -164,6 +197,39 @@ void janetc_popscope_keepslot(JanetCompiler *c, JanetSlot retslot) {
     }
 }
 
+static int lookup_missing(
+    JanetCompiler *c,
+    const uint8_t *sym,
+    JanetFunction *handler,
+    JanetBinding *out) {
+    int32_t minar = handler->def->min_arity;
+    int32_t maxar = handler->def->max_arity;
+    if (minar > 1 || maxar < 1) {
+        janetc_error(c, janet_cstring("missing symbol lookup handler must take 1 argument"));
+        return 0;
+    }
+    Janet args[1] = { janet_wrap_symbol(sym) };
+    JanetFiber *fiberp = janet_fiber(handler, 64, 1, args);
+    if (NULL == fiberp) {
+        janetc_error(c, janet_cstring("failed to call missing symbol lookup handler"));
+        return 0;
+    }
+    fiberp->env = c->env;
+    int lock = janet_gclock();
+    Janet tempOut;
+    JanetSignal status = janet_continue(fiberp, janet_wrap_nil(), &tempOut);
+    janet_gcunlock(lock);
+    if (status != JANET_SIGNAL_OK) {
+        janetc_error(c, janet_formatc("(lookup) %V", tempOut));
+        return 0;
+    }
+
+    /* Convert return value as entry. */
+    /* Alternative could use janet_resolve_ext(c->env, sym) to read result from environment. */
+    *out = janet_binding_from_entry(tempOut);
+    return 1;
+}
+
 /* Allow searching for symbols. Return information about the symbol */
 JanetSlot janetc_resolve(
     JanetCompiler *c,
@@ -196,24 +262,62 @@ JanetSlot janetc_resolve(
 
     /* Symbol not found - check for global */
     {
-        Janet check;
-        JanetBindingType btype = janet_resolve(c->env, sym, &check);
-        switch (btype) {
+        JanetBinding binding = janet_resolve_ext(c->env, sym);
+        if (binding.type == JANET_BINDING_NONE) {
+            Janet handler = janet_table_get(c->env, janet_ckeywordv("missing-symbol"));
+            switch (janet_type(handler)) {
+                case JANET_NIL:
+                    break;
+                case JANET_FUNCTION:
+                    if (!lookup_missing(c, sym, janet_unwrap_function(handler), &binding))
+                        return janetc_cslot(janet_wrap_nil());
+                    break;
+                default:
+                    janetc_error(c, janet_formatc("invalid lookup handler %V", handler));
+                    return janetc_cslot(janet_wrap_nil());
+            }
+        }
+
+        switch (binding.type) {
             default:
             case JANET_BINDING_NONE:
-                janetc_error(c, janet_formatc("unknown symbol %q", sym));
+                janetc_error(c, janet_formatc("unknown symbol %q", janet_wrap_symbol(sym)));
                 return janetc_cslot(janet_wrap_nil());
             case JANET_BINDING_DEF:
             case JANET_BINDING_MACRO: /* Macro should function like defs when not in calling pos */
-                return janetc_cslot(check);
+                ret = janetc_cslot(binding.value);
+                break;
+            case JANET_BINDING_DYNAMIC_DEF:
+            case JANET_BINDING_DYNAMIC_MACRO:
+                ret = janetc_cslot(binding.value);
+                ret.flags |= JANET_SLOT_REF | JANET_SLOT_NAMED | JANET_SLOTTYPE_ANY;
+                ret.flags &= ~JANET_SLOT_CONSTANT;
+                break;
             case JANET_BINDING_VAR: {
-                JanetSlot ret = janetc_cslot(check);
-                /* TODO save type info */
+                ret = janetc_cslot(binding.value);
                 ret.flags |= JANET_SLOT_REF | JANET_SLOT_NAMED | JANET_SLOT_MUTABLE | JANET_SLOTTYPE_ANY;
                 ret.flags &= ~JANET_SLOT_CONSTANT;
-                return ret;
+                break;
             }
         }
+        JanetCompileLintLevel depLevel = JANET_C_LINT_RELAXED;
+        switch (binding.deprecation) {
+            case JANET_BINDING_DEP_NONE:
+                break;
+            case JANET_BINDING_DEP_RELAXED:
+                depLevel = JANET_C_LINT_RELAXED;
+                break;
+            case JANET_BINDING_DEP_NORMAL:
+                depLevel = JANET_C_LINT_NORMAL;
+                break;
+            case JANET_BINDING_DEP_STRICT:
+                depLevel = JANET_C_LINT_STRICT;
+                break;
+        }
+        if (binding.deprecation != JANET_BINDING_DEP_NONE) {
+            janetc_lintf(c, depLevel, "%q is deprecated", janet_wrap_symbol(sym));
+        }
+        return ret;
     }
 
     /* Symbol was found */
@@ -235,6 +339,11 @@ found:
         scope = scope->parent;
     janet_assert(scope, "invalid scopes");
     scope->flags |= JANET_SCOPE_ENV;
+
+    /* In the function scope, allocate the slot as an upvalue */
+    janetc_regalloc_touch(&scope->ua, ret.index);
+
+    /* Iterate through child scopes and make sure environment is propagated */
     scope = scope->child;
 
     /* Propagate env up to current scope */
@@ -320,33 +429,46 @@ JanetSlot *janetc_toslotskv(JanetCompiler *c, Janet ds) {
     return ret;
 }
 
-/* Push slots load via janetc_toslots. */
-void janetc_pushslots(JanetCompiler *c, JanetSlot *slots) {
+/* Push slots loaded via janetc_toslots. Return the minimum number of slots pushed,
+ * or -1 - min_arity if there is a splice. (if there is no splice, min_arity is also
+ * the maximum possible arity). */
+int32_t janetc_pushslots(JanetCompiler *c, JanetSlot *slots) {
     int32_t i;
     int32_t count = janet_v_count(slots);
+    int32_t min_arity = 0;
+    int has_splice = 0;
     for (i = 0; i < count;) {
         if (slots[i].flags & JANET_SLOT_SPLICED) {
             janetc_emit_s(c, JOP_PUSH_ARRAY, slots[i], 0);
             i++;
+            has_splice = 1;
         } else if (i + 1 == count) {
             janetc_emit_s(c, JOP_PUSH, slots[i], 0);
             i++;
+            min_arity++;
         } else if (slots[i + 1].flags & JANET_SLOT_SPLICED) {
             janetc_emit_s(c, JOP_PUSH, slots[i], 0);
             janetc_emit_s(c, JOP_PUSH_ARRAY, slots[i + 1], 0);
             i += 2;
+            min_arity++;
+            has_splice = 1;
         } else if (i + 2 == count) {
             janetc_emit_ss(c, JOP_PUSH_2, slots[i], slots[i + 1], 0);
             i += 2;
+            min_arity += 2;
         } else if (slots[i + 2].flags & JANET_SLOT_SPLICED) {
             janetc_emit_ss(c, JOP_PUSH_2, slots[i], slots[i + 1], 0);
             janetc_emit_s(c, JOP_PUSH_ARRAY, slots[i + 2], 0);
             i += 3;
+            min_arity += 2;
+            has_splice = 1;
         } else {
             janetc_emit_sss(c, JOP_PUSH_3, slots[i], slots[i + 1], slots[i + 2], 0);
             i += 3;
+            min_arity += 3;
         }
     }
+    return has_splice ? (-1 - min_arity) : min_arity;
 }
 
 /* Check if a list of slots has any spliced slots */
@@ -378,6 +500,7 @@ void janetc_throwaway(JanetFopts opts, Janet x) {
     int32_t mapbufstart = janet_v_count(c->mapbuffer);
     janetc_scope(&unusedScope, c, JANET_SCOPE_UNUSED, "unusued");
     janetc_value(opts, x);
+    janetc_lintf(c, JANET_C_LINT_STRICT, "dead code, consider removing %.2q", x);
     janetc_popscope(c);
     if (c->buffer) {
         janet_v__cnt(c->buffer) = bufstart;
@@ -403,7 +526,68 @@ static JanetSlot janetc_call(JanetFopts opts, JanetSlot *slots, JanetSlot fun) {
         /* TODO janet function inlining (no c functions)*/
     }
     if (!specialized) {
-        janetc_pushslots(c, slots);
+        int32_t min_arity = janetc_pushslots(c, slots);
+        /* Check for provably incorrect function calls */
+        if (fun.flags & JANET_SLOT_CONSTANT) {
+
+            /* Check for bad arity type if fun is a constant */
+            switch (janet_type(fun.constant)) {
+                case JANET_FUNCTION: {
+                    JanetFunction *f = janet_unwrap_function(fun.constant);
+                    int32_t min = f->def->min_arity;
+                    int32_t max = f->def->max_arity;
+                    if (min_arity < 0) {
+                        /* Call has splices */
+                        min_arity = -1 - min_arity;
+                        if (min_arity > max && max >= 0) {
+                            const uint8_t *es = janet_formatc(
+                                                    "%v expects at most %d argument%s, got at least %d",
+                                                    fun.constant, max, max == 1 ? "" : "s", min_arity);
+                            janetc_error(c, es);
+                        }
+                    } else {
+                        /* Call has no splices */
+                        if (min_arity > max && max >= 0) {
+                            const uint8_t *es = janet_formatc(
+                                                    "%v expects at most %d argument%s, got %d",
+                                                    fun.constant, max, max == 1 ? "" : "s", min_arity);
+                            janetc_error(c, es);
+                        }
+                        if (min_arity < min) {
+                            const uint8_t *es = janet_formatc(
+                                                    "%v expects at least %d argument%s, got %d",
+                                                    fun.constant, min, min == 1 ? "" : "s", min_arity);
+                            janetc_error(c, es);
+                        }
+                    }
+                }
+                break;
+                case JANET_CFUNCTION:
+                case JANET_ABSTRACT:
+                case JANET_NIL:
+                    break;
+                case JANET_KEYWORD:
+                    if (min_arity == 0) {
+                        const uint8_t *es = janet_formatc("%v expects at least 1 argument, got 0",
+                                                          fun.constant);
+                        janetc_error(c, es);
+                    }
+                    break;
+                default:
+                    if (min_arity > 1 || min_arity == 0) {
+                        const uint8_t *es = janet_formatc("%v expects 1 argument, got %d",
+                                                          fun.constant, min_arity);
+                        janetc_error(c, es);
+                    }
+                    if (min_arity < -2) {
+                        const uint8_t *es = janet_formatc("%v expects 1 argument, got at least %d",
+                                                          fun.constant, -1 - min_arity);
+                        janetc_error(c, es);
+                    }
+                    break;
+            }
+        }
+
         if ((opts.flags & JANET_FOPTS_TAIL) &&
                 /* Prevent top level tail calls for better errors */
                 !(c->scope->flags & JANET_SCOPE_TOP)) {
@@ -422,10 +606,40 @@ static JanetSlot janetc_call(JanetFopts opts, JanetSlot *slots, JanetSlot fun) {
 static JanetSlot janetc_maker(JanetFopts opts, JanetSlot *slots, int op) {
     JanetCompiler *c = opts.compiler;
     JanetSlot retslot;
-    janetc_pushslots(c, slots);
-    janetc_freeslots(c, slots);
-    retslot = janetc_gettarget(opts);
-    janetc_emit_s(c, op, retslot, 1);
+
+    /* Check if this structure is composed entirely of constants */
+    int can_inline = 1;
+    for (int32_t i = 0; i < janet_v_count(slots); i++) {
+        if (!(slots[i].flags & JANET_SLOT_CONSTANT) ||
+                (slots[i].flags & JANET_SLOT_SPLICED)) {
+            can_inline = 0;
+            break;
+        }
+    }
+
+    if (can_inline && (op == JOP_MAKE_STRUCT)) {
+        JanetKV *st = janet_struct_begin(janet_v_count(slots) / 2);
+        for (int32_t i = 0; i < janet_v_count(slots); i += 2) {
+            Janet k = slots[i].constant;
+            Janet v = slots[i + 1].constant;
+            janet_struct_put(st, k, v);
+        }
+        retslot = janetc_cslot(janet_wrap_struct(janet_struct_end(st)));
+        janetc_freeslots(c, slots);
+    } else if (can_inline && (op == JOP_MAKE_TUPLE)) {
+        Janet *tup = janet_tuple_begin(janet_v_count(slots));
+        for (int32_t i = 0; i < janet_v_count(slots); i++) {
+            tup[i] = slots[i].constant;
+        }
+        retslot = janetc_cslot(janet_wrap_tuple(janet_tuple_end(tup)));
+        janetc_freeslots(c, slots);
+    } else {
+        janetc_pushslots(c, slots);
+        janetc_freeslots(c, slots);
+        retslot = janetc_gettarget(opts);
+        janetc_emit_s(c, op, retslot, 1);
+    }
+
     return retslot;
 }
 
@@ -474,9 +688,9 @@ static int macroexpand1(
     if (janet_tuple_length(form) == 0)
         return 0;
     /* Source map - only set when we get a tuple */
-    if (janet_tuple_sm_start(form) >= 0) {
-        c->current_mapping.start = janet_tuple_sm_start(form);
-        c->current_mapping.end = janet_tuple_sm_end(form);
+    if (janet_tuple_sm_line(form) >= 0) {
+        c->current_mapping.line = janet_tuple_sm_line(form);
+        c->current_mapping.column = janet_tuple_sm_column(form);
     }
     /* Bracketed tuples are not specials or macros! */
     if (janet_tuple_flag(form) & JANET_TUPLE_FLAG_BRACKETCTOR)
@@ -491,27 +705,45 @@ static int macroexpand1(
     }
     Janet macroval;
     JanetBindingType btype = janet_resolve(c->env, name, &macroval);
-    if (btype != JANET_BINDING_MACRO ||
+    if (!(btype == JANET_BINDING_MACRO || btype == JANET_BINDING_DYNAMIC_MACRO) ||
             !janet_checktype(macroval, JANET_FUNCTION))
         return 0;
 
     /* Evaluate macro */
-    JanetFiber *fiberp = NULL;
     JanetFunction *macro = janet_unwrap_function(macroval);
+    int32_t arity = janet_tuple_length(form) - 1;
+    JanetFiber *fiberp = janet_fiber(macro, 64, arity, form + 1);
+    if (NULL == fiberp) {
+        int32_t minar = macro->def->min_arity;
+        int32_t maxar = macro->def->max_arity;
+        const uint8_t *es = NULL;
+        if (minar >= 0 && arity < minar)
+            es = janet_formatc("macro arity mismatch, expected at least %d, got %d", minar, arity);
+        if (maxar >= 0 && arity > maxar)
+            es = janet_formatc("macro arity mismatch, expected at most %d, got %d", maxar, arity);
+        c->result.macrofiber = NULL;
+        janetc_error(c, es);
+        return 0;
+    }
+    /* Set env */
+    fiberp->env = c->env;
     int lock = janet_gclock();
-    JanetSignal status = janet_pcall(
-                             macro,
-                             janet_tuple_length(form) - 1,
-                             form + 1,
-                             &x,
-                             &fiberp);
+    Janet mf_kw = janet_ckeywordv("macro-form");
+    janet_table_put(c->env, mf_kw, x);
+    Janet tempOut;
+    JanetSignal status = janet_continue(fiberp, janet_wrap_nil(), &tempOut);
+    janet_table_put(c->env, mf_kw, janet_wrap_nil());
+    if (c->lints) {
+        janet_table_put(c->env, janet_ckeywordv("macro-lints"), janet_wrap_array(c->lints));
+    }
     janet_gcunlock(lock);
     if (status != JANET_SIGNAL_OK) {
-        const uint8_t *es = janet_formatc("(macro) %V", x);
+        const uint8_t *es = janet_formatc("(macro) %V", tempOut);
         c->result.macrofiber = fiberp;
         janetc_error(c, es);
+        return 0;
     } else {
-        *out = x;
+        *out = tempOut;
     }
 
     return 1;
@@ -555,7 +787,7 @@ JanetSlot janetc_value(JanetFopts opts, Janet x) {
                 const Janet *tup = janet_unwrap_tuple(x);
                 /* Empty tuple is tuple literal */
                 if (janet_tuple_length(tup) == 0) {
-                    ret = janetc_cslot(x);
+                    ret = janetc_cslot(janet_wrap_tuple(janet_tuple_n(NULL, 0)));
                 } else if (janet_tuple_flag(tup) & JANET_TUPLE_FLAG_BRACKETCTOR) { /* [] tuples are not function call */
                     ret = janetc_tuple(opts, x);
                 } else {
@@ -601,7 +833,32 @@ JanetSlot janetc_value(JanetFopts opts, Janet x) {
     return ret;
 }
 
+/* Add function flags to janet functions */
+void janet_def_addflags(JanetFuncDef *def) {
+    int32_t set_flags = 0;
+    int32_t unset_flags = 0;
+    /* pos checks */
+    if (def->name)            set_flags |= JANET_FUNCDEF_FLAG_HASNAME;
+    if (def->source)          set_flags |= JANET_FUNCDEF_FLAG_HASSOURCE;
+    if (def->defs)            set_flags |= JANET_FUNCDEF_FLAG_HASDEFS;
+    if (def->environments)    set_flags |= JANET_FUNCDEF_FLAG_HASENVS;
+    if (def->sourcemap)       set_flags |= JANET_FUNCDEF_FLAG_HASSOURCEMAP;
+    if (def->closure_bitset)  set_flags |= JANET_FUNCDEF_FLAG_HASCLOBITSET;
+    /* negative checks */
+    if (!def->name)           unset_flags |= JANET_FUNCDEF_FLAG_HASNAME;
+    if (!def->source)         unset_flags |= JANET_FUNCDEF_FLAG_HASSOURCE;
+    if (!def->defs)           unset_flags |= JANET_FUNCDEF_FLAG_HASDEFS;
+    if (!def->environments)   unset_flags |= JANET_FUNCDEF_FLAG_HASENVS;
+    if (!def->sourcemap)      unset_flags |= JANET_FUNCDEF_FLAG_HASSOURCEMAP;
+    if (!def->closure_bitset) unset_flags |= JANET_FUNCDEF_FLAG_HASCLOBITSET;
+    /* Update flags */
+    def->flags |= set_flags;
+    def->flags &= ~unset_flags;
+}
+
 /* Compile a funcdef */
+/* Once the various other settings of the FuncDef have been tweaked,
+ * call janet_def_addflags to set the proper flags for the funcdef */
 JanetFuncDef *janetc_pop_funcdef(JanetCompiler *c) {
     JanetScope *scope = c->scope;
     JanetFuncDef *def = janet_funcdef_alloc();
@@ -622,20 +879,20 @@ JanetFuncDef *janetc_pop_funcdef(JanetCompiler *c) {
     /* Copy bytecode (only last chunk) */
     def->bytecode_length = janet_v_count(c->buffer) - scope->bytecode_start;
     if (def->bytecode_length) {
-        size_t s = sizeof(int32_t) * def->bytecode_length;
-        def->bytecode = malloc(s);
+        size_t s = sizeof(int32_t) * (size_t) def->bytecode_length;
+        def->bytecode = janet_malloc(s);
         if (NULL == def->bytecode) {
             JANET_OUT_OF_MEMORY;
         }
-        memcpy(def->bytecode, c->buffer + scope->bytecode_start, s);
+        safe_memcpy(def->bytecode, c->buffer + scope->bytecode_start, s);
         janet_v__cnt(c->buffer) = scope->bytecode_start;
-        if (NULL != c->mapbuffer) {
-            size_t s = sizeof(JanetSourceMapping) * def->bytecode_length;
-            def->sourcemap = malloc(s);
+        if (NULL != c->mapbuffer && c->source) {
+            size_t s = sizeof(JanetSourceMapping) * (size_t) def->bytecode_length;
+            def->sourcemap = janet_malloc(s);
             if (NULL == def->sourcemap) {
                 JANET_OUT_OF_MEMORY;
             }
-            memcpy(def->sourcemap, c->mapbuffer + scope->bytecode_start, s);
+            safe_memcpy(def->sourcemap, c->mapbuffer + scope->bytecode_start, s);
             janet_v__cnt(c->mapbuffer) = scope->bytecode_start;
         }
     }
@@ -650,6 +907,22 @@ JanetFuncDef *janetc_pop_funcdef(JanetCompiler *c) {
         def->flags |= JANET_FUNCDEF_FLAG_NEEDSENV;
     }
 
+    /* Copy upvalue bitset */
+    if (scope->ua.count) {
+        /* Number of u32s we need to create a bitmask for all slots */
+        int32_t slotchunks = (def->slotcount + 31) >> 5;
+        /* numchunks is min of slotchunks and scope->ua.count */
+        int32_t numchunks = slotchunks > scope->ua.count ? scope->ua.count : slotchunks;
+        uint32_t *chunks = janet_calloc(sizeof(uint32_t), slotchunks);
+        if (NULL == chunks) {
+            JANET_OUT_OF_MEMORY;
+        }
+        memcpy(chunks, scope->ua.chunks, sizeof(uint32_t) * numchunks);
+        /* Register allocator preallocates some registers [240-255, high 16 bits of chunk index 7], we can ignore those. */
+        if (scope->ua.count > 7) chunks[7] &= 0xFFFFU;
+        def->closure_bitset = chunks;
+    }
+
     /* Pop the scope */
     janetc_popscope(c);
 
@@ -657,22 +930,23 @@ JanetFuncDef *janetc_pop_funcdef(JanetCompiler *c) {
 }
 
 /* Initialize a compiler */
-static void janetc_init(JanetCompiler *c, JanetTable *env, const uint8_t *where) {
+static void janetc_init(JanetCompiler *c, JanetTable *env, const uint8_t *where, JanetArray *lints) {
     c->scope = NULL;
     c->buffer = NULL;
     c->mapbuffer = NULL;
     c->recursion_guard = JANET_RECURSION_GUARD;
     c->env = env;
     c->source = where;
-    c->current_mapping.start = -1;
-    c->current_mapping.end = -1;
+    c->current_mapping.line = -1;
+    c->current_mapping.column = -1;
+    c->lints = lints;
     /* Init result */
     c->result.error = NULL;
     c->result.status = JANET_COMPILE_OK;
     c->result.funcdef = NULL;
     c->result.macrofiber = NULL;
-    c->result.error_mapping.start = -1;
-    c->result.error_mapping.end = -1;
+    c->result.error_mapping.line = -1;
+    c->result.error_mapping.column = -1;
 }
 
 /* Deinitialize a compiler struct */
@@ -683,12 +957,13 @@ static void janetc_deinit(JanetCompiler *c) {
 }
 
 /* Compile a form. */
-JanetCompileResult janet_compile(Janet source, JanetTable *env, const uint8_t *where) {
+JanetCompileResult janet_compile_lint(Janet source,
+                                      JanetTable *env, const uint8_t *where, JanetArray *lints) {
     JanetCompiler c;
     JanetScope rootscope;
     JanetFopts fopts;
 
-    janetc_init(&c, env, where);
+    janetc_init(&c, env, where, lints);
 
     /* Push a function scope */
     janetc_scope(&rootscope, &c, JANET_SCOPE_FUNCTION | JANET_SCOPE_TOP, "root");
@@ -704,6 +979,7 @@ JanetCompileResult janet_compile(Janet source, JanetTable *env, const uint8_t *w
     if (c.result.status == JANET_COMPILE_OK) {
         JanetFuncDef *def = janetc_pop_funcdef(&c);
         def->name = janet_cstring("_thunk");
+        janet_def_addflags(def);
         c.result.funcdef = def;
     } else {
         c.result.error_mapping = c.current_mapping;
@@ -715,26 +991,49 @@ JanetCompileResult janet_compile(Janet source, JanetTable *env, const uint8_t *w
     return c.result;
 }
 
+JanetCompileResult janet_compile(Janet source, JanetTable *env, const uint8_t *where) {
+    return janet_compile_lint(source, env, where, NULL);
+}
+
 /* C Function for compiling */
-static Janet cfun(int32_t argc, Janet *argv) {
-    janet_arity(argc, 1, 3);
-    JanetTable *env = argc > 1 ? janet_gettable(argv, 1) : janet_vm_fiber->env;
+JANET_CORE_FN(cfun,
+              "(compile ast &opt env source lints)",
+              "Compiles an Abstract Syntax Tree (ast) into a function. "
+              "Pair the compile function with parsing functionality to implement "
+              "eval. Returns a new function and does not modify ast. Returns an error "
+              "struct with keys :line, :column, and :error if compilation fails. "
+              "If a `lints` array is given, linting messages will be appended to the array. "
+              "Each message will be a tuple of the form `(level line col message)`.") {
+    janet_arity(argc, 1, 4);
+    JanetTable *env = argc > 1 ? janet_gettable(argv, 1) : janet_vm.fiber->env;
     if (NULL == env) {
         env = janet_table(0);
-        janet_vm_fiber->env = env;
+        janet_vm.fiber->env = env;
     }
     const uint8_t *source = NULL;
-    if (argc == 3) {
-        source = janet_getstring(argv, 2);
+    if (argc >= 3) {
+        Janet x = argv[2];
+        if (janet_checktype(x, JANET_STRING)) {
+            source = janet_unwrap_string(x);
+        } else if (janet_checktype(x, JANET_KEYWORD)) {
+            source = janet_unwrap_keyword(x);
+        } else {
+            janet_panic_type(x, 2, JANET_TFLAG_STRING | JANET_TFLAG_KEYWORD);
+        }
     }
-    JanetCompileResult res = janet_compile(argv[0], env, source);
+    JanetArray *lints = (argc >= 4) ? janet_getarray(argv, 3) : NULL;
+    JanetCompileResult res = janet_compile_lint(argv[0], env, source, lints);
     if (res.status == JANET_COMPILE_OK) {
         return janet_wrap_function(janet_thunk(res.funcdef));
     } else {
         JanetTable *t = janet_table(4);
         janet_table_put(t, janet_ckeywordv("error"), janet_wrap_string(res.error));
-        janet_table_put(t, janet_ckeywordv("start"), janet_wrap_integer(res.error_mapping.start));
-        janet_table_put(t, janet_ckeywordv("end"), janet_wrap_integer(res.error_mapping.end));
+        if (res.error_mapping.line > 0) {
+            janet_table_put(t, janet_ckeywordv("line"), janet_wrap_integer(res.error_mapping.line));
+        }
+        if (res.error_mapping.column > 0) {
+            janet_table_put(t, janet_ckeywordv("column"), janet_wrap_integer(res.error_mapping.column));
+        }
         if (res.macrofiber) {
             janet_table_put(t, janet_ckeywordv("fiber"), janet_wrap_fiber(res.macrofiber));
         }
@@ -742,18 +1041,10 @@ static Janet cfun(int32_t argc, Janet *argv) {
     }
 }
 
-static const JanetReg compile_cfuns[] = {
-    {
-        "compile", cfun,
-        JDOC("(compile ast &opt env source)\n\n"
-             "Compiles an Abstract Syntax Tree (ast) into a janet function. "
-             "Pair the compile function with parsing functionality to implement "
-             "eval. Returns a janet function and does not modify ast. Throws an "
-             "error if the ast cannot be compiled.")
-    },
-    {NULL, NULL, NULL}
-};
-
 void janet_lib_compile(JanetTable *env) {
-    janet_core_cfuns(env, NULL, compile_cfuns);
+    JanetRegExt cfuns[] = {
+        JANET_CORE_REG("compile", cfun),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, cfuns);
 }

src/core/compile.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -24,17 +24,25 @@
 #define JANET_COMPILE_H
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "regalloc.h"
 #endif
 
+/* Levels for compiler warnings */
+typedef enum {
+    JANET_C_LINT_RELAXED,
+    JANET_C_LINT_NORMAL,
+    JANET_C_LINT_STRICT
+} JanetCompileLintLevel;
+
 /* Tags for some functions for the prepared inliner */
 #define JANET_FUN_DEBUG 1
 #define JANET_FUN_ERROR 2
 #define JANET_FUN_APPLY 3
 #define JANET_FUN_YIELD 4
 #define JANET_FUN_RESUME 5
-#define JANET_FUN_GET 6
+#define JANET_FUN_IN 6
 #define JANET_FUN_PUT 7
 #define JANET_FUN_LENGTH 8
 #define JANET_FUN_ADD 9
@@ -48,18 +56,19 @@
 #define JANET_FUN_RSHIFT 17
 #define JANET_FUN_RSHIFTU 18
 #define JANET_FUN_BNOT 19
-#define JANET_FUN_ORDER_GT 20
-#define JANET_FUN_ORDER_LT 21
-#define JANET_FUN_ORDER_GTE 22
-#define JANET_FUN_ORDER_LTE 23
-#define JANET_FUN_ORDER_EQ 24
-#define JANET_FUN_ORDER_NEQ 25
-#define JANET_FUN_GT 26
-#define JANET_FUN_LT 27
-#define JANET_FUN_GTE 28
-#define JANET_FUN_LTE 29
-#define JANET_FUN_EQ 30
-#define JANET_FUN_NEQ 31
+#define JANET_FUN_GT 20
+#define JANET_FUN_LT 21
+#define JANET_FUN_GTE 22
+#define JANET_FUN_LTE 23
+#define JANET_FUN_EQ 24
+#define JANET_FUN_NEQ 25
+#define JANET_FUN_PROP 26
+#define JANET_FUN_GET 27
+#define JANET_FUN_NEXT 28
+#define JANET_FUN_MODULO 29
+#define JANET_FUN_REMAINDER 30
+#define JANET_FUN_CMP 31
+#define JANET_FUN_CANCEL 32
 
 /* Compiler typedefs */
 typedef struct JanetCompiler JanetCompiler;
@@ -76,10 +85,10 @@ typedef struct JanetSpecial JanetSpecial;
 #define JANET_SLOT_MUTABLE 0x40000
 #define JANET_SLOT_REF 0x80000
 #define JANET_SLOT_RETURNED 0x100000
-/* Needed for handling single element arrays as global vars. */
-
-/* Used for unquote-splicing */
-#define JANET_SLOT_SPLICED 0x200000
+#define JANET_SLOT_DEP_NOTE 0x200000
+#define JANET_SLOT_DEP_WARN 0x400000
+#define JANET_SLOT_DEP_ERROR 0x800000
+#define JANET_SLOT_SPLICED 0x1000000
 
 #define JANET_SLOTTYPE_ANY 0xFFFF
 
@@ -127,7 +136,10 @@ struct JanetScope {
     /* Regsiter allocator */
     JanetcRegisterAllocator ra;
 
-    /* Referenced closure environents. The values at each index correspond
+    /* Upvalue allocator */
+    JanetcRegisterAllocator ua;
+
+    /* Referenced closure environments. The values at each index correspond
      * to which index to get the environment from in the parent. The environment
      * that corresponds to the direct parent's stack will always have value 0. */
     int32_t *envs;
@@ -159,6 +171,9 @@ struct JanetCompiler {
 
     /* Prevent unbounded recursion */
     int recursion_guard;
+
+    /* Collect linting results */
+    JanetArray *lints;
 };
 
 #define JANET_FOPTS_TAIL 0x10000
@@ -213,7 +228,7 @@ JanetSlot *janetc_toslots(JanetCompiler *c, const Janet *vals, int32_t len);
 JanetSlot *janetc_toslotskv(JanetCompiler *c, Janet ds);
 
 /* Push slots load via janetc_toslots. */
-void janetc_pushslots(JanetCompiler *c, JanetSlot *slots);
+int32_t janetc_pushslots(JanetCompiler *c, JanetSlot *slots);
 
 /* Free slots loaded via janetc_toslots */
 void janetc_freeslots(JanetCompiler *c, JanetSlot *slots);
@@ -225,6 +240,9 @@ JanetSlot janetc_return(JanetCompiler *c, JanetSlot s);
 void janetc_error(JanetCompiler *c, const uint8_t *m);
 void janetc_cerror(JanetCompiler *c, const char *m);
 
+/* Linting */
+void janetc_lintf(JanetCompiler *C, JanetCompileLintLevel level, const char *format, ...);
+
 /* Dispatch to correct form compiler */
 JanetSlot janetc_value(JanetFopts opts, Janet x);
 

src/core/debug.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,6 +21,7 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "gc.h"
 #include "state.h"
@@ -52,36 +53,40 @@ void janet_debug_unbreak(JanetFuncDef *def, int32_t pc) {
  */
 void janet_debug_find(
     JanetFuncDef **def_out, int32_t *pc_out,
-    const uint8_t *source, int32_t offset) {
+    const uint8_t *source, int32_t sourceLine, int32_t sourceColumn) {
     /* Scan the heap for right func def */
-    JanetGCObject *current = janet_vm_blocks;
+    JanetGCObject *current = janet_vm.blocks;
     /* Keep track of the best source mapping we have seen so far */
     int32_t besti = -1;
-    int32_t best_range = INT32_MAX;
+    int32_t best_line = -1;
+    int32_t best_column = -1;
     JanetFuncDef *best_def = NULL;
     while (NULL != current) {
         if ((current->flags & JANET_MEM_TYPEBITS) == JANET_MEMORY_FUNCDEF) {
-            JanetFuncDef *def = (JanetFuncDef *)(current + 1);
+            JanetFuncDef *def = (JanetFuncDef *)(current);
             if (def->sourcemap &&
                     def->source &&
                     !janet_string_compare(source, def->source)) {
                 /* Correct source file, check mappings. The chosen
-                 * pc index is the first match with the smallest range. */
+                 * pc index is the instruction closest to the given line column, but
+                 * not after. */
                 int32_t i;
                 for (i = 0; i < def->bytecode_length; i++) {
-                    int32_t start = def->sourcemap[i].start;
-                    int32_t end = def->sourcemap[i].end;
-                    if (end - start < best_range &&
-                            start <= offset &&
-                            end >= offset) {
-                        best_range = end - start;
-                        besti = i;
-                        best_def = def;
+                    int32_t line = def->sourcemap[i].line;
+                    int32_t column = def->sourcemap[i].column;
+                    if (line <= sourceLine && line >= best_line) {
+                        if (column <= sourceColumn &&
+                                (line > best_line || column > best_column)) {
+                            best_line = line;
+                            best_column = column;
+                            besti = i;
+                            best_def = def;
+                        }
                     }
                 }
             }
         }
-        current = current->next;
+        current = current->data.next;
     }
     if (best_def) {
         *def_out = best_def;
@@ -91,14 +96,22 @@ void janet_debug_find(
     }
 }
 
+void janet_stacktrace(JanetFiber *fiber, Janet err) {
+    const char *prefix = janet_checktype(err, JANET_NIL) ? NULL : "";
+    janet_stacktrace_ext(fiber, err, prefix);
+}
+
 /* Error reporting. This can be emulated from within Janet, but for
  * consitency with the top level code it is defined once. */
-void janet_stacktrace(JanetFiber *fiber, Janet err) {
+void janet_stacktrace_ext(JanetFiber *fiber, Janet err, const char *prefix) {
+
     int32_t fi;
-    FILE *out = janet_dynfile("err", stderr);
     const char *errstr = (const char *)janet_to_string(err);
     JanetFiber **fibers = NULL;
-    int wrote_error = 0;
+    int wrote_error = !prefix;
+
+    int print_color = janet_truthy(janet_dyn("err-color"));
+    if (print_color) janet_eprintf("\x1b[31m");
 
     while (fiber) {
         janet_v_push(fibers, fiber);
@@ -109,6 +122,7 @@ void janet_stacktrace(JanetFiber *fiber, Janet err) {
         fiber = fibers[fi];
         int32_t i = fiber->frame;
         while (i > 0) {
+            JanetCFunRegistry *reg = NULL;
             JanetStackFrame *frame = (JanetStackFrame *)(fiber->data + i - JANET_FRAME_SIZE);
             JanetFuncDef *def = NULL;
             i = frame->prevframe;
@@ -116,47 +130,61 @@ void janet_stacktrace(JanetFiber *fiber, Janet err) {
             /* Print prelude to stack frame */
             if (!wrote_error) {
                 JanetFiberStatus status = janet_fiber_status(fiber);
-                const char *prefix = status == JANET_STATUS_ERROR ? "" : "status ";
-                fprintf(out, "%s%s: %s\n",
-                        prefix,
-                        janet_status_names[status],
-                        errstr);
+                janet_eprintf("%s%s: %s\n",
+                              prefix,
+                              janet_status_names[status],
+                              errstr);
                 wrote_error = 1;
             }
 
-            fprintf(out, "  in");
+            janet_eprintf("  in");
 
             if (frame->func) {
                 def = frame->func->def;
-                fprintf(out, " %s", def->name ? (const char *)def->name : "<anonymous>");
+                janet_eprintf(" %s", def->name ? (const char *)def->name : "<anonymous>");
                 if (def->source) {
-                    fprintf(out, " [%s]", (const char *)def->source);
+                    janet_eprintf(" [%s]", (const char *)def->source);
                 }
             } else {
                 JanetCFunction cfun = (JanetCFunction)(frame->pc);
                 if (cfun) {
-                    Janet name = janet_table_get(janet_vm_registry, janet_wrap_cfunction(cfun));
-                    if (!janet_checktype(name, JANET_NIL))
-                        fprintf(out, " %s", (const char *)janet_to_string(name));
-                    else
-                        fprintf(out, " <cfunction>");
+                    reg = janet_registry_get(cfun);
+                    if (NULL != reg && NULL != reg->name) {
+                        if (reg->name_prefix) {
+                            janet_eprintf(" %s/%s", reg->name_prefix, reg->name);
+                        } else {
+                            janet_eprintf(" %s", reg->name);
+                        }
+                        if (NULL != reg->source_file) {
+                            janet_eprintf(" [%s]", reg->source_file);
+                        }
+                    } else {
+                        janet_eprintf(" <cfunction>");
+                    }
                 }
             }
             if (frame->flags & JANET_STACKFRAME_TAILCALL)
-                fprintf(out, " (tailcall)");
+                janet_eprintf(" (tailcall)");
             if (frame->func && frame->pc) {
                 int32_t off = (int32_t)(frame->pc - def->bytecode);
                 if (def->sourcemap) {
                     JanetSourceMapping mapping = def->sourcemap[off];
-                    fprintf(out, " at (%d:%d)", mapping.start, mapping.end);
+                    janet_eprintf(" on line %d, column %d", mapping.line, mapping.column);
                 } else {
-                    fprintf(out, " pc=%d", off);
+                    janet_eprintf(" pc=%d", off);
+                }
+            } else if (NULL != reg) {
+                /* C Function */
+                if (reg->source_line > 0) {
+                    janet_eprintf(" on line %d", (long) reg->source_line);
                 }
             }
-            fprintf(out, "\n");
+            janet_eprintf("\n");
         }
     }
 
+    if (print_color) janet_eprintf("\x1b[0m");
+
     janet_v_free(fibers);
 }
 
@@ -167,10 +195,11 @@ void janet_stacktrace(JanetFiber *fiber, Janet err) {
 /* Helper to find funcdef and bytecode offset to insert or remove breakpoints.
  * Takes a source file name and byte offset. */
 static void helper_find(int32_t argc, Janet *argv, JanetFuncDef **def, int32_t *bytecode_offset) {
-    janet_fixarity(argc, 2);
+    janet_fixarity(argc, 3);
     const uint8_t *source = janet_getstring(argv, 0);
-    int32_t source_offset = janet_getinteger(argv, 1);
-    janet_debug_find(def, bytecode_offset, source, source_offset);
+    int32_t line = janet_getinteger(argv, 1);
+    int32_t col = janet_getinteger(argv, 2);
+    janet_debug_find(def, bytecode_offset, source, line, col);
 }
 
 /* Helper to find funcdef and bytecode offset to insert or remove breakpoints.
@@ -183,7 +212,13 @@ static void helper_find_fun(int32_t argc, Janet *argv, JanetFuncDef **def, int32
     *bytecode_offset = offset;
 }
 
-static Janet cfun_debug_break(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_debug_break,
+              "(debug/break source line col)",
+              "Sets a breakpoint in `source` at a given line and column. "
+              "Will throw an error if the breakpoint location "
+              "cannot be found. For example\n\n"
+              "\t(debug/break \"core.janet\" 10 4)\n\n"
+              "will set a breakpoint at line 10, 4th column of the file core.janet.") {
     JanetFuncDef *def;
     int32_t offset;
     helper_find(argc, argv, &def, &offset);
@@ -191,7 +226,11 @@ static Janet cfun_debug_break(int32_t argc, Janet *argv) {
     return janet_wrap_nil();
 }
 
-static Janet cfun_debug_unbreak(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_debug_unbreak,
+              "(debug/unbreak source line column)",
+              "Remove a breakpoint with a source key at a given line and column. "
+              "Will throw an error if the breakpoint "
+              "cannot be found.") {
     JanetFuncDef *def;
     int32_t offset = 0;
     helper_find(argc, argv, &def, &offset);
@@ -199,7 +238,11 @@ static Janet cfun_debug_unbreak(int32_t argc, Janet *argv) {
     return janet_wrap_nil();
 }
 
-static Janet cfun_debug_fbreak(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_debug_fbreak,
+              "(debug/fbreak fun &opt pc)",
+              "Set a breakpoint in a given function. pc is an optional offset, which "
+              "is in bytecode instructions. fun is a function value. Will throw an error "
+              "if the offset is too large or negative.") {
     JanetFuncDef *def;
     int32_t offset = 0;
     helper_find_fun(argc, argv, &def, &offset);
@@ -207,7 +250,9 @@ static Janet cfun_debug_fbreak(int32_t argc, Janet *argv) {
     return janet_wrap_nil();
 }
 
-static Janet cfun_debug_unfbreak(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_debug_unfbreak,
+              "(debug/unfbreak fun &opt pc)",
+              "Unset a breakpoint set with debug/fbreak.") {
     JanetFuncDef *def;
     int32_t offset;
     helper_find_fun(argc, argv, &def, &offset);
@@ -215,7 +260,12 @@ static Janet cfun_debug_unfbreak(int32_t argc, Janet *argv) {
     return janet_wrap_nil();
 }
 
-static Janet cfun_debug_lineage(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_debug_lineage,
+              "(debug/lineage fib)",
+              "Returns an array of all child fibers from a root fiber. This function "
+              "is useful when a fiber signals or errors to an ancestor fiber. Using this function, "
+              "the fiber handling the error can see which fiber raised the signal. This function should "
+              "be used mostly for debugging purposes.") {
     janet_fixarity(argc, 1);
     JanetFiber *fiber = janet_getfiber(argv, 0);
     JanetArray *array = janet_array(0);
@@ -240,9 +290,20 @@ static Janet doframe(JanetStackFrame *frame) {
     } else {
         JanetCFunction cfun = (JanetCFunction)(frame->pc);
         if (cfun) {
-            Janet name = janet_table_get(janet_vm_registry, janet_wrap_cfunction(cfun));
-            if (!janet_checktype(name, JANET_NIL)) {
-                janet_table_put(t, janet_ckeywordv("name"), name);
+            JanetCFunRegistry *reg = janet_registry_get(cfun);
+            if (NULL != reg->name) {
+                if (NULL != reg->name_prefix) {
+                    janet_table_put(t, janet_ckeywordv("name"), janet_wrap_string(janet_formatc("%s/%s", reg->name_prefix, reg->name)));
+                } else {
+                    janet_table_put(t, janet_ckeywordv("name"), janet_cstringv(reg->name));
+                }
+                if (NULL != reg->source_file) {
+                    janet_table_put(t, janet_ckeywordv("source"), janet_cstringv(reg->source_file));
+                }
+                if (reg->source_line > 0) {
+                    janet_table_put(t, janet_ckeywordv("source-line"), janet_wrap_integer(reg->source_line));
+                    janet_table_put(t, janet_ckeywordv("source-column"), janet_wrap_integer(1));
+                }
             }
         }
         janet_table_put(t, janet_ckeywordv("c"), janet_wrap_true());
@@ -257,22 +318,36 @@ static Janet doframe(JanetStackFrame *frame) {
         janet_table_put(t, janet_ckeywordv("pc"), janet_wrap_integer(off));
         if (def->sourcemap) {
             JanetSourceMapping mapping = def->sourcemap[off];
-            janet_table_put(t, janet_ckeywordv("source-start"), janet_wrap_integer(mapping.start));
-            janet_table_put(t, janet_ckeywordv("source-end"), janet_wrap_integer(mapping.end));
+            janet_table_put(t, janet_ckeywordv("source-line"), janet_wrap_integer(mapping.line));
+            janet_table_put(t, janet_ckeywordv("source-column"), janet_wrap_integer(mapping.column));
         }
         if (def->source) {
             janet_table_put(t, janet_ckeywordv("source"), janet_wrap_string(def->source));
         }
         /* Add stack arguments */
         slots = janet_array(def->slotcount);
-        memcpy(slots->data, stack, sizeof(Janet) * def->slotcount);
+        safe_memcpy(slots->data, stack, sizeof(Janet) * def->slotcount);
         slots->count = def->slotcount;
         janet_table_put(t, janet_ckeywordv("slots"), janet_wrap_array(slots));
     }
     return janet_wrap_table(t);
 }
 
-static Janet cfun_debug_stack(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_debug_stack,
+              "(debug/stack fib)",
+              "Gets information about the stack as an array of tables. Each table "
+              "in the array contains information about a stack frame. The top-most, current "
+              "stack frame is the first table in the array, and the bottom-most stack frame "
+              "is the last value. Each stack frame contains some of the following attributes:\n\n"
+              "* :c - true if the stack frame is a c function invocation\n\n"
+              "* :source-column - the current source column of the stack frame\n\n"
+              "* :function - the function that the stack frame represents\n\n"
+              "* :source-line - the current source line of the stack frame\n\n"
+              "* :name - the human-friendly name of the function\n\n"
+              "* :pc - integer indicating the location of the program counter\n\n"
+              "* :source - string with the file path or other identifier for the source code\n\n"
+              "* :slots - array of all values in each slot\n\n"
+              "* :tail - boolean indicating a tail call") {
     janet_fixarity(argc, 1);
     JanetFiber *fiber = janet_getfiber(argv, 0);
     JanetArray *array = janet_array(0);
@@ -288,14 +363,24 @@ static Janet cfun_debug_stack(int32_t argc, Janet *argv) {
     return janet_wrap_array(array);
 }
 
-static Janet cfun_debug_stacktrace(int32_t argc, Janet *argv) {
-    janet_fixarity(argc, 2);
+JANET_CORE_FN(cfun_debug_stacktrace,
+              "(debug/stacktrace fiber &opt err prefix)",
+              "Prints a nice looking stacktrace for a fiber. Can optionally provide "
+              "an error value to print the stack trace with. If `err` is nil or not "
+              "provided, and no prefix is given, will skip the error line. Returns the fiber.") {
+    janet_arity(argc, 1, 3);
     JanetFiber *fiber = janet_getfiber(argv, 0);
-    janet_stacktrace(fiber, argv[1]);
+    Janet x = argc == 1 ? janet_wrap_nil() : argv[1];
+    const char *prefix = janet_optcstring(argv, argc, 2, NULL);
+    janet_stacktrace_ext(fiber, x, prefix);
     return argv[0];
 }
 
-static Janet cfun_debug_argstack(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_debug_argstack,
+              "(debug/arg-stack fiber)",
+              "Gets all values currently on the fiber's argument stack. Normally, "
+              "this should be empty unless the fiber signals while pushing arguments "
+              "to make a function call. Returns a new array.") {
     janet_fixarity(argc, 1);
     JanetFiber *fiber = janet_getfiber(argv, 0);
     JanetArray *array = janet_array(fiber->stacktop - fiber->stackstart);
@@ -304,78 +389,31 @@ static Janet cfun_debug_argstack(int32_t argc, Janet *argv) {
     return janet_wrap_array(array);
 }
 
-static const JanetReg debug_cfuns[] = {
-    {
-        "debug/break", cfun_debug_break,
-        JDOC("(debug/break source byte-offset)\n\n"
-             "Sets a breakpoint with source a key at a given byte offset. An offset "
-             "of 0 is the first byte in a file. Will throw an error if the breakpoint location "
-             "cannot be found. For example\n\n"
-             "\t(debug/break \"core.janet\" 1000)\n\n"
-             "wil set a breakpoint at the 1000th byte of the file core.janet.")
-    },
-    {
-        "debug/unbreak", cfun_debug_unbreak,
-        JDOC("(debug/unbreak source byte-offset)\n\n"
-             "Remove a breakpoint with a source key at a given byte offset. An offset "
-             "of 0 is the first byte in a file. Will throw an error if the breakpoint "
-             "cannot be found.")
-    },
-    {
-        "debug/fbreak", cfun_debug_fbreak,
-        JDOC("(debug/fbreak fun [,pc=0])\n\n"
-             "Set a breakpoint in a given function. pc is an optional offset, which "
-             "is in bytecode instructions. fun is a function value. Will throw an error "
-             "if the offset is too large or negative.")
-    },
-    {
-        "debug/unfbreak", cfun_debug_unfbreak,
-        JDOC("(debug/unfbreak fun [,pc=0])\n\n"
-             "Unset a breakpoint set with debug/fbreak.")
-    },
-    {
-        "debug/arg-stack", cfun_debug_argstack,
-        JDOC("(debug/arg-stack fiber)\n\n"
-             "Gets all values currently on the fiber's argument stack. Normally, "
-             "this should be empty unless the fiber signals while pushing arguments "
-             "to make a function call. Returns a new array.")
-    },
-    {
-        "debug/stack", cfun_debug_stack,
-        JDOC("(debug/stack fib)\n\n"
-             "Gets information about the stack as an array of tables. Each table "
-             "in the array contains information about a stack frame. The top most, current "
-             "stack frame is the first table in the array, and the bottom most stack frame "
-             "is the last value. Each stack frame contains some of the following attributes:\n\n"
-             "\t:c - true if the stack frame is a c function invocation\n"
-             "\t:column - the current source column of the stack frame\n"
-             "\t:function - the function that the stack frame represents\n"
-             "\t:line - the current source line of the stack frame\n"
-             "\t:name - the human friendly name of the function\n"
-             "\t:pc - integer indicating the location of the program counter\n"
-             "\t:source - string with the file path or other identifier for the source code\n"
-             "\t:slots - array of all values in each slot\n"
-             "\t:tail - boolean indicating a tail call")
-    },
-    {
-        "debug/stacktrace", cfun_debug_stacktrace,
-        JDOC("(debug/stacktrace fiber err)\n\n"
-             "Prints a nice looking stacktrace for a fiber. The error message "
-             "err must be passed to the function as fiber's do not keep track of "
-             "the last error they have thrown. Returns the fiber.")
-    },
-    {
-        "debug/lineage", cfun_debug_lineage,
-        JDOC("(debug/lineage fib)\n\n"
-             "Returns an array of all child fibers from a root fiber. This function "
-             "is useful when a fiber signals or errors to an ancestor fiber. Using this function, "
-             "the fiber handling the error can see which fiber raised the signal. This function should "
-             "be used mostly for debugging purposes.")
-    },
-    {NULL, NULL, NULL}
-};
+JANET_CORE_FN(cfun_debug_step,
+              "(debug/step fiber &opt x)",
+              "Run a fiber for one virtual instruction of the Janet machine. Can optionally "
+              "pass in a value that will be passed as the resuming value. Returns the signal value, "
+              "which will usually be nil, as breakpoints raise nil signals.") {
+    janet_arity(argc, 1, 2);
+    JanetFiber *fiber = janet_getfiber(argv, 0);
+    Janet out = janet_wrap_nil();
+    janet_step(fiber, argc == 1 ? janet_wrap_nil() : argv[1], &out);
+    return out;
+}
 
 /* Module entry point */
 void janet_lib_debug(JanetTable *env) {
-    janet_core_cfuns(env, NULL, debug_cfuns);
+    JanetRegExt debug_cfuns[] = {
+        JANET_CORE_REG("debug/break", cfun_debug_break),
+        JANET_CORE_REG("debug/unbreak", cfun_debug_unbreak),
+        JANET_CORE_REG("debug/fbreak", cfun_debug_fbreak),
+        JANET_CORE_REG("debug/unfbreak", cfun_debug_unfbreak),
+        JANET_CORE_REG("debug/arg-stack", cfun_debug_argstack),
+        JANET_CORE_REG("debug/stack", cfun_debug_stack),
+        JANET_CORE_REG("debug/stacktrace", cfun_debug_stacktrace),
+        JANET_CORE_REG("debug/lineage", cfun_debug_lineage),
+        JANET_CORE_REG("debug/step", cfun_debug_step),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, debug_cfuns);
 }

src/core/emit.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,6 +21,7 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "emit.h"
 #include "vector.h"
@@ -36,7 +37,7 @@ int32_t janetc_allocfar(JanetCompiler *c) {
     return reg;
 }
 
-/* Get a register less than 256 */
+/* Get a register less than 256 for temporary use. */
 int32_t janetc_allocnear(JanetCompiler *c, JanetcRegisterTemp tag) {
     return janetc_regalloc_temp(&c->scope->ra, tag);
 }
@@ -204,7 +205,7 @@ static int32_t janetc_regnear(JanetCompiler *c, JanetSlot s, JanetcRegisterTemp
 }
 
 /* Check if two slots are equal */
-static int janetc_sequal(JanetSlot lhs, JanetSlot rhs) {
+int janetc_sequal(JanetSlot lhs, JanetSlot rhs) {
     if ((lhs.flags & ~JANET_SLOTTYPE_ANY) == (rhs.flags & ~JANET_SLOTTYPE_ANY) &&
             lhs.index == rhs.index &&
             lhs.envindex == rhs.envindex) {
@@ -244,8 +245,8 @@ void janetc_copy(
     janetc_moveback(c, dest, nearreg);
     /* Cleanup */
     janetc_regalloc_freetemp(&c->scope->ra, nearreg, JANETC_REGTEMP_3);
-
 }
+
 /* Instruction templated emitters */
 
 static int32_t emit1s(JanetCompiler *c, uint8_t op, JanetSlot s, int32_t rest, int wr) {

src/core/emit.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -42,6 +42,9 @@ int32_t janetc_emit_ssi(JanetCompiler *c, uint8_t op, JanetSlot s1, JanetSlot s2
 int32_t janetc_emit_ssu(JanetCompiler *c, uint8_t op, JanetSlot s1, JanetSlot s2, uint8_t immediate, int wr);
 int32_t janetc_emit_sss(JanetCompiler *c, uint8_t op, JanetSlot s1, JanetSlot s2, JanetSlot s3, int wr);
 
+/* Check if two slots are equivalent */
+int janetc_sequal(JanetSlot x, JanetSlot y);
+
 /* Move value from one slot to another. Cannot copy to constant slots. */
 void janetc_copy(JanetCompiler *c, JanetSlot dest, JanetSlot src);
 

src/core/features.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -20,30 +20,36 @@
 * IN THE SOFTWARE.
 */
 
-/* Configure Janet. Edit this file to customize the build */
+/* Feature test macros */
 
-#ifndef JANETCONF_H
-#define JANETCONF_H
+#ifndef JANET_FEATURES_H_defined
+#define JANET_FEATURES_H_defined
 
-#define JANET_VERSION "0.6.0"
+#if defined(__NetBSD__) || defined(__APPLE__) || defined(__OpenBSD__) \
+    || defined(__bsdi__) || defined(__DragonFly__)
+/* Use BSD source on any BSD systems, include OSX */
+# define _BSD_SOURCE
+#else
+/* Use POSIX feature flags */
+# ifndef _POSIX_C_SOURCE
+# define _POSIX_C_SOURCE 200809L
+# endif
+#endif
 
-/* #define JANET_BUILD "local" */
+#if defined(WIN32) || defined(_WIN32)
+#define WIN32_LEAN_AND_MEAN
+#endif
 
-/* These settings all affect linking, so use cautiously. */
-/* #define JANET_SINGLE_THREADED */
-/* #define JANET_NO_DYNAMIC_MODULES */
-/* #define JANET_NO_NANBOX */
-/* #define JANET_API __attribute__((visibility ("default"))) */
+/* Needed for realpath on linux */
+#if !defined(_XOPEN_SOURCE) && (defined(__linux__) || defined(__EMSCRIPTEN__))
+#define _XOPEN_SOURCE 500
+#endif
 
-/* #define JANET_NO_ASSEMBLER */
-/* #define JANET_NO_PEG */
-/* #define JANET_NO_TYPED_ARRAY */
-/* #define JANET_NO_INT_TYPES */
-/* #define JANET_REDUCED_OS */
-/* #define JANET_OUT_OF_MEMORY do { printf("janet out of memory\n"); exit(1); } while (0) */
-/* #define JANET_RECURSION_GUARD 1024 */
-/* #define JANET_MAX_PROTO_DEPTH 200 */
-/* #define JANET_MAX_MACRO_EXPAND 200 */
-/* #define JANET_STACK_MAX 16384 */
+/* Needed for timegm and other extensions when building with -std=c99.
+ * It also defines realpath, etc, which would normally require
+ * _XOPEN_SOURCE >= 500. */
+#if !defined(_NETBSD_SOURCE) && defined(__NetBSD__)
+#define _NETBSD_SOURCE
+#endif
 
-#endif /* end of include guard: JANETCONF_H */
+#endif

src/core/fiber.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,6 +21,7 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "fiber.h"
 #include "state.h"
@@ -34,8 +35,14 @@ static void fiber_reset(JanetFiber *fiber) {
     fiber->stackstart = JANET_FRAME_SIZE;
     fiber->stacktop = JANET_FRAME_SIZE;
     fiber->child = NULL;
-    fiber->flags = JANET_FIBER_MASK_YIELD;
+    fiber->flags = JANET_FIBER_MASK_YIELD | JANET_FIBER_RESUME_NO_USEVAL | JANET_FIBER_RESUME_NO_SKIP;
     fiber->env = NULL;
+    fiber->last_value = janet_wrap_nil();
+#ifdef JANET_EV
+    fiber->waiting = NULL;
+    fiber->sched_id = 0;
+    fiber->supervisor_channel = NULL;
+#endif
     janet_fiber_set_status(fiber, JANET_STATUS_NEW);
 }
 
@@ -46,10 +53,11 @@ static JanetFiber *fiber_alloc(int32_t capacity) {
         capacity = 32;
     }
     fiber->capacity = capacity;
-    data = malloc(sizeof(Janet) * capacity);
+    data = janet_malloc(sizeof(Janet) * (size_t) capacity);
     if (NULL == data) {
         JANET_OUT_OF_MEMORY;
     }
+    janet_vm.next_collection += sizeof(Janet) * capacity;
     fiber->data = data;
     return fiber;
 }
@@ -63,11 +71,22 @@ JanetFiber *janet_fiber_reset(JanetFiber *fiber, JanetFunction *callee, int32_t
         if (newstacktop >= fiber->capacity) {
             janet_fiber_setcapacity(fiber, 2 * newstacktop);
         }
-        memcpy(fiber->data + fiber->stacktop, argv, argc * sizeof(Janet));
+        if (argv) {
+            memcpy(fiber->data + fiber->stacktop, argv, argc * sizeof(Janet));
+        } else {
+            /* If argv not given, fill with nil */
+            for (int32_t i = 0; i < argc; i++) {
+                fiber->data[fiber->stacktop + i] = janet_wrap_nil();
+            }
+        }
         fiber->stacktop = newstacktop;
     }
     if (janet_fiber_funcframe(fiber, callee)) return NULL;
     janet_fiber_frame(fiber)->flags |= JANET_STACKFRAME_ENTRANCE;
+#ifdef JANET_EV
+    fiber->waiting = NULL;
+    fiber->supervisor_channel = NULL;
+#endif
     return fiber;
 }
 
@@ -76,29 +95,56 @@ JanetFiber *janet_fiber(JanetFunction *callee, int32_t capacity, int32_t argc, c
     return janet_fiber_reset(fiber_alloc(capacity), callee, argc, argv);
 }
 
+#ifdef JANET_DEBUG
+/* Test for memory issues by reallocating fiber every time we push a stack frame */
+static void janet_fiber_refresh_memory(JanetFiber *fiber) {
+    int32_t n = fiber->capacity;
+    if (n) {
+        Janet *newData = janet_malloc(sizeof(Janet) * n);
+        if (NULL == newData) {
+            JANET_OUT_OF_MEMORY;
+        }
+        memcpy(newData, fiber->data, fiber->capacity * sizeof(Janet));
+        janet_free(fiber->data);
+        fiber->data = newData;
+    }
+}
+#endif
+
 /* Ensure that the fiber has enough extra capacity */
 void janet_fiber_setcapacity(JanetFiber *fiber, int32_t n) {
-    Janet *newData = realloc(fiber->data, sizeof(Janet) * n);
+    int32_t old_size = fiber->capacity;
+    int32_t diff = n - old_size;
+    Janet *newData = janet_realloc(fiber->data, sizeof(Janet) * n);
     if (NULL == newData) {
         JANET_OUT_OF_MEMORY;
     }
     fiber->data = newData;
     fiber->capacity = n;
+    janet_vm.next_collection += sizeof(Janet) * diff;
+}
+
+/* Grow fiber if needed */
+static void janet_fiber_grow(JanetFiber *fiber, int32_t needed) {
+    int32_t cap = needed > (INT32_MAX / 2) ? INT32_MAX : 2 * needed;
+    janet_fiber_setcapacity(fiber, cap);
 }
 
 /* Push a value on the next stack frame */
 void janet_fiber_push(JanetFiber *fiber, Janet x) {
+    if (fiber->stacktop == INT32_MAX) janet_panic("stack overflow");
     if (fiber->stacktop >= fiber->capacity) {
-        janet_fiber_setcapacity(fiber, 2 * fiber->stacktop);
+        janet_fiber_grow(fiber, fiber->stacktop);
     }
     fiber->data[fiber->stacktop++] = x;
 }
 
 /* Push 2 values on the next stack frame */
 void janet_fiber_push2(JanetFiber *fiber, Janet x, Janet y) {
+    if (fiber->stacktop >= INT32_MAX - 1) janet_panic("stack overflow");
     int32_t newtop = fiber->stacktop + 2;
     if (newtop > fiber->capacity) {
-        janet_fiber_setcapacity(fiber, 2 * newtop);
+        janet_fiber_grow(fiber, newtop);
     }
     fiber->data[fiber->stacktop] = x;
     fiber->data[fiber->stacktop + 1] = y;
@@ -107,9 +153,10 @@ void janet_fiber_push2(JanetFiber *fiber, Janet x, Janet y) {
 
 /* Push 3 values on the next stack frame */
 void janet_fiber_push3(JanetFiber *fiber, Janet x, Janet y, Janet z) {
+    if (fiber->stacktop >= INT32_MAX - 2) janet_panic("stack overflow");
     int32_t newtop = fiber->stacktop + 3;
     if (newtop > fiber->capacity) {
-        janet_fiber_setcapacity(fiber, 2 * newtop);
+        janet_fiber_grow(fiber, newtop);
     }
     fiber->data[fiber->stacktop] = x;
     fiber->data[fiber->stacktop + 1] = y;
@@ -119,11 +166,12 @@ void janet_fiber_push3(JanetFiber *fiber, Janet x, Janet y, Janet z) {
 
 /* Push an array on the next stack frame */
 void janet_fiber_pushn(JanetFiber *fiber, const Janet *arr, int32_t n) {
+    if (fiber->stacktop > INT32_MAX - n) janet_panic("stack overflow");
     int32_t newtop = fiber->stacktop + n;
     if (newtop > fiber->capacity) {
-        janet_fiber_setcapacity(fiber, 2 * newtop);
+        janet_fiber_grow(fiber, newtop);
     }
-    memcpy(fiber->data + fiber->stacktop, arr, n * sizeof(Janet));
+    safe_memcpy(fiber->data + fiber->stacktop, arr, n * sizeof(Janet));
     fiber->stacktop = newtop;
 }
 
@@ -154,6 +202,10 @@ int janet_fiber_funcframe(JanetFiber *fiber, JanetFunction *func) {
 
     if (fiber->capacity < nextstacktop) {
         janet_fiber_setcapacity(fiber, 2 * nextstacktop);
+#ifdef JANET_DEBUG
+    } else {
+        janet_fiber_refresh_memory(fiber);
+#endif
     }
 
     /* Nil unset stack arguments (Needed for gc correctness) */
@@ -199,17 +251,79 @@ int janet_fiber_funcframe(JanetFiber *fiber, JanetFunction *func) {
 static void janet_env_detach(JanetFuncEnv *env) {
     /* Check for closure environment */
     if (env) {
-        size_t s = sizeof(Janet) * env->length;
-        Janet *vmem = malloc(s);
+        janet_env_valid(env);
+        int32_t len = env->length;
+        size_t s = sizeof(Janet) * (size_t) len;
+        Janet *vmem = janet_malloc(s);
+        janet_vm.next_collection += (uint32_t) s;
         if (NULL == vmem) {
             JANET_OUT_OF_MEMORY;
         }
-        memcpy(vmem, env->as.fiber->data + env->offset, s);
+        Janet *values = env->as.fiber->data + env->offset;
+        safe_memcpy(vmem, values, s);
+        uint32_t *bitset = janet_stack_frame(values)->func->def->closure_bitset;
+        if (bitset) {
+            /* Clear unneeded references in closure environment */
+            for (int32_t i = 0; i < len; i += 32) {
+                uint32_t mask = ~(bitset[i >> 5]);
+                int32_t maxj = i + 32 > len ? len : i + 32;
+                for (int32_t j = i; j < maxj; j++) {
+                    if (mask & 1) vmem[j] = janet_wrap_nil();
+                    mask >>= 1;
+                }
+            }
+        }
         env->offset = 0;
         env->as.values = vmem;
     }
 }
 
+/* Validate potentially untrusted func env (unmarshalled envs are difficult to verify) */
+int janet_env_valid(JanetFuncEnv *env) {
+    if (env->offset < 0) {
+        int32_t real_offset = -(env->offset);
+        JanetFiber *fiber = env->as.fiber;
+        int32_t i = fiber->frame;
+        while (i > 0) {
+            JanetStackFrame *frame = (JanetStackFrame *)(fiber->data + i - JANET_FRAME_SIZE);
+            if (real_offset == i &&
+                    frame->env == env &&
+                    frame->func &&
+                    frame->func->def->slotcount == env->length) {
+                env->offset = real_offset;
+                return 1;
+            }
+            i = frame->prevframe;
+        }
+        /* Invalid, set to empty off-stack variant. */
+        env->offset = 0;
+        env->length = 0;
+        env->as.values = NULL;
+        return 0;
+    } else {
+        return 1;
+    }
+}
+
+/* Detach a fiber from the env if the target fiber has stopped mutating */
+void janet_env_maybe_detach(JanetFuncEnv *env) {
+    /* Check for detachable closure envs */
+    janet_env_valid(env);
+    if (env->offset > 0) {
+        JanetFiberStatus s = janet_fiber_status(env->as.fiber);
+        int isFinished = s == JANET_STATUS_DEAD ||
+                         s == JANET_STATUS_ERROR ||
+                         s == JANET_STATUS_USER0 ||
+                         s == JANET_STATUS_USER1 ||
+                         s == JANET_STATUS_USER2 ||
+                         s == JANET_STATUS_USER3 ||
+                         s == JANET_STATUS_USER4;
+        if (isFinished) {
+            janet_env_detach(env);
+        }
+    }
+}
+
 /* Create a tail frame for a function */
 int janet_fiber_funcframe_tail(JanetFiber *fiber, JanetFunction *func) {
     int32_t i;
@@ -224,6 +338,10 @@ int janet_fiber_funcframe_tail(JanetFiber *fiber, JanetFunction *func) {
 
     if (fiber->capacity < nextstacktop) {
         janet_fiber_setcapacity(fiber, 2 * nextstacktop);
+#ifdef JANET_DEBUG
+    } else {
+        janet_fiber_refresh_memory(fiber);
+#endif
     }
 
     Janet *stack = fiber->data + fiber->frame;
@@ -286,6 +404,10 @@ void janet_fiber_cframe(JanetFiber *fiber, JanetCFunction cfun) {
 
     if (fiber->capacity < nextstacktop) {
         janet_fiber_setcapacity(fiber, 2 * nextstacktop);
+#ifdef JANET_DEBUG
+    } else {
+        janet_fiber_refresh_memory(fiber);
+#endif
     }
 
     /* Set the next frame */
@@ -301,8 +423,7 @@ void janet_fiber_cframe(JanetFiber *fiber, JanetCFunction cfun) {
     newframe->flags = 0;
 }
 
-/* Pop a stack frame from the fiber. Returns the new stack frame, or
- * NULL if there are no more frames */
+/* Pop a stack frame from the fiber. */
 void janet_fiber_popframe(JanetFiber *fiber) {
     JanetStackFrame *frame = janet_fiber_frame(fiber);
     if (fiber->frame == 0) return;
@@ -321,12 +442,19 @@ JanetFiberStatus janet_fiber_status(JanetFiber *f) {
 }
 
 JanetFiber *janet_current_fiber(void) {
-    return janet_vm_fiber;
+    return janet_vm.fiber;
+}
+
+JanetFiber *janet_root_fiber(void) {
+    return janet_vm.root_fiber;
 }
 
 /* CFuns */
 
-static Janet cfun_fiber_getenv(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_fiber_getenv,
+              "(fiber/getenv fiber)",
+              "Gets the environment for a fiber. Returns nil if no such table is "
+              "set yet.") {
     janet_fixarity(argc, 1);
     JanetFiber *fiber = janet_getfiber(argv, 0);
     return fiber->env ?
@@ -334,7 +462,10 @@ static Janet cfun_fiber_getenv(int32_t argc, Janet *argv) {
            janet_wrap_nil();
 }
 
-static Janet cfun_fiber_setenv(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_fiber_setenv,
+              "(fiber/setenv fiber table)",
+              "Sets the environment table for a fiber. Set to nil to remove the current "
+              "environment.") {
     janet_fixarity(argc, 2);
     JanetFiber *fiber = janet_getfiber(argv, 0);
     if (janet_checktype(argv[1], JANET_NIL)) {
@@ -345,18 +476,41 @@ static Janet cfun_fiber_setenv(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_fiber_new(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_fiber_new,
+              "(fiber/new func &opt sigmask)",
+              "Create a new fiber with function body func. Can optionally "
+              "take a set of signals to block from the current parent fiber "
+              "when called. The mask is specified as a keyword where each character "
+              "is used to indicate a signal to block. If the ev module is enabled, and "
+              "this fiber is used as an argument to `ev/go`, these \"blocked\" signals "
+              "will result in messages being sent to the supervisor channel. "
+              "The default sigmask is :y. "
+              "For example,\n\n"
+              "    (fiber/new myfun :e123)\n\n"
+              "blocks error signals and user signals 1, 2 and 3. The signals are "
+              "as follows:\n\n"
+              "* :a - block all signals\n"
+              "* :d - block debug signals\n"
+              "* :e - block error signals\n"
+              "* :t - block termination signals: error + user[0-4]\n"
+              "* :u - block user signals\n"
+              "* :y - block yield signals\n"
+              "* :0-9 - block a specific user signal\n\n"
+              "The sigmask argument also can take environment flags. If any mutually "
+              "exclusive flags are present, the last flag takes precedence.\n\n"
+              "* :i - inherit the environment from the current fiber\n"
+              "* :p - the environment table's prototype is the current environment table") {
     janet_arity(argc, 1, 2);
     JanetFunction *func = janet_getfunction(argv, 0);
     JanetFiber *fiber;
-    if (func->def->min_arity != 0) {
-        janet_panic("expected nullary function in fiber constructor");
+    if (func->def->min_arity > 1) {
+        janet_panicf("fiber function must accept 0 or 1 arguments");
     }
-    fiber = janet_fiber(func, 64, 0, NULL);
+    fiber = janet_fiber(func, 64, func->def->min_arity, NULL);
     if (argc == 2) {
         int32_t i;
         JanetByteView view = janet_getbytes(argv, 1);
-        fiber->flags = 0;
+        fiber->flags = JANET_FIBER_RESUME_NO_USEVAL | JANET_FIBER_RESUME_NO_SKIP;
         janet_fiber_set_status(fiber, JANET_STATUS_NEW);
         for (i = 0; i < view.len; i++) {
             if (view.bytes[i] >= '0' && view.bytes[i] <= '9') {
@@ -364,7 +518,7 @@ static Janet cfun_fiber_new(int32_t argc, Janet *argv) {
             } else {
                 switch (view.bytes[i]) {
                     default:
-                        janet_panicf("invalid flag %c, expected a, d, e, u, or y", view.bytes[i]);
+                        janet_panicf("invalid flag %c, expected a, t, d, e, u, y, i, or p", view.bytes[i]);
                         break;
                     case 'a':
                         fiber->flags |=
@@ -373,6 +527,15 @@ static Janet cfun_fiber_new(int32_t argc, Janet *argv) {
                             JANET_FIBER_MASK_USER |
                             JANET_FIBER_MASK_YIELD;
                         break;
+                    case 't':
+                        fiber->flags |=
+                            JANET_FIBER_MASK_ERROR |
+                            JANET_FIBER_MASK_USER0 |
+                            JANET_FIBER_MASK_USER1 |
+                            JANET_FIBER_MASK_USER2 |
+                            JANET_FIBER_MASK_USER3 |
+                            JANET_FIBER_MASK_USER4;
+                        break;
                     case 'd':
                         fiber->flags |= JANET_FIBER_MASK_DEBUG;
                         break;
@@ -386,10 +549,17 @@ static Janet cfun_fiber_new(int32_t argc, Janet *argv) {
                         fiber->flags |= JANET_FIBER_MASK_YIELD;
                         break;
                     case 'i':
-                        if (!janet_vm_fiber->env) {
-                            janet_vm_fiber->env = janet_table(0);
+                        if (!janet_vm.fiber->env) {
+                            janet_vm.fiber->env = janet_table(0);
                         }
-                        fiber->env = janet_vm_fiber->env;
+                        fiber->env = janet_vm.fiber->env;
+                        break;
+                    case 'p':
+                        if (!janet_vm.fiber->env) {
+                            janet_vm.fiber->env = janet_table(0);
+                        }
+                        fiber->env = janet_table(0);
+                        fiber->env->proto = janet_vm.fiber->env;
                         break;
                 }
             }
@@ -398,26 +568,53 @@ static Janet cfun_fiber_new(int32_t argc, Janet *argv) {
     return janet_wrap_fiber(fiber);
 }
 
-static Janet cfun_fiber_status(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_fiber_status,
+              "(fiber/status fib)",
+              "Get the status of a fiber. The status will be one of:\n\n"
+              "* :dead - the fiber has finished\n"
+              "* :error - the fiber has errored out\n"
+              "* :debug - the fiber is suspended in debug mode\n"
+              "* :pending - the fiber has been yielded\n"
+              "* :user(0-9) - the fiber is suspended by a user signal\n"
+              "* :alive - the fiber is currently running and cannot be resumed\n"
+              "* :new - the fiber has just been created and not yet run") {
     janet_fixarity(argc, 1);
     JanetFiber *fiber = janet_getfiber(argv, 0);
     uint32_t s = janet_fiber_status(fiber);
     return janet_ckeywordv(janet_status_names[s]);
 }
 
-static Janet cfun_fiber_current(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_fiber_current,
+              "(fiber/current)",
+              "Returns the currently running fiber.") {
     (void) argv;
     janet_fixarity(argc, 0);
-    return janet_wrap_fiber(janet_vm_fiber);
+    return janet_wrap_fiber(janet_vm.fiber);
 }
 
-static Janet cfun_fiber_maxstack(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_fiber_root,
+              "(fiber/root)",
+              "Returns the current root fiber. The root fiber is the oldest ancestor "
+              "that does not have a parent.") {
+    (void) argv;
+    janet_fixarity(argc, 0);
+    return janet_wrap_fiber(janet_vm.root_fiber);
+}
+
+JANET_CORE_FN(cfun_fiber_maxstack,
+              "(fiber/maxstack fib)",
+              "Gets the maximum stack size in janet values allowed for a fiber. While memory for "
+              "the fiber's stack is not allocated up front, the fiber will not allocated more "
+              "than this amount and will throw a stack-overflow error if more memory is needed. ") {
     janet_fixarity(argc, 1);
     JanetFiber *fiber = janet_getfiber(argv, 0);
     return janet_wrap_integer(fiber->maxstack);
 }
 
-static Janet cfun_fiber_setmaxstack(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_fiber_setmaxstack,
+              "(fiber/setmaxstack fib maxstack)",
+              "Sets the maximum stack size in janet values for a fiber. By default, the "
+              "maximum stack size is usually 8192.") {
     janet_fixarity(argc, 2);
     JanetFiber *fiber = janet_getfiber(argv, 0);
     int32_t maxs = janet_getinteger(argv, 1);
@@ -428,72 +625,44 @@ static Janet cfun_fiber_setmaxstack(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static const JanetReg fiber_cfuns[] = {
-    {
-        "fiber/new", cfun_fiber_new,
-        JDOC("(fiber/new func [,sigmask])\n\n"
-             "Create a new fiber with function body func. Can optionally "
-             "take a set of signals to block from the current parent fiber "
-             "when called. The mask is specified as a keyword where each character "
-             "is used to indicate a signal to block. The default sigmask is :y. "
-             "For example, \n\n"
-             "\t(fiber/new myfun :e123)\n\n"
-             "blocks error signals and user signals 1, 2 and 3. The signals are "
-             "as follows: \n\n"
-             "\ta - block all signals\n"
-             "\td - block debug signals\n"
-             "\te - block error signals\n"
-             "\tu - block user signals\n"
-             "\ty - block yield signals\n"
-             "\t0-9 - block a specific user signal\n"
-             "\ti - inherit the environment from the current fiber (not related to signals)")
-    },
-    {
-        "fiber/status", cfun_fiber_status,
-        JDOC("(fiber/status fib)\n\n"
-             "Get the status of a fiber. The status will be one of:\n\n"
-             "\t:dead - the fiber has finished\n"
-             "\t:error - the fiber has errored out\n"
-             "\t:debug - the fiber is suspended in debug mode\n"
-             "\t:pending - the fiber has been yielded\n"
-             "\t:user(0-9) - the fiber is suspended by a user signal\n"
-             "\t:alive - the fiber is currently running and cannot be resumed\n"
-             "\t:new - the fiber has just been created and not yet run")
-    },
-    {
-        "fiber/current", cfun_fiber_current,
-        JDOC("(fiber/current)\n\n"
-             "Returns the currently running fiber.")
-    },
-    {
-        "fiber/maxstack", cfun_fiber_maxstack,
-        JDOC("(fiber/maxstack fib)\n\n"
-             "Gets the maximum stack size in janet values allowed for a fiber. While memory for "
-             "the fiber's stack is not allocated up front, the fiber will not allocated more "
-             "than this amount and will throw a stack-overflow error if more memory is needed. ")
-    },
-    {
-        "fiber/setmaxstack", cfun_fiber_setmaxstack,
-        JDOC("(fiber/setmaxstack fib maxstack)\n\n"
-             "Sets the maximum stack size in janet values for a fiber. By default, the "
-             "maximum stack size is usually 8192.")
-    },
-    {
-        "fiber/getenv", cfun_fiber_getenv,
-        JDOC("(fiber/getenv fiber)\n\n"
-             "Gets the environment for a fiber. Returns nil if no such table is "
-             "set yet.")
-    },
-    {
-        "fiber/setenv", cfun_fiber_setenv,
-        JDOC("(fiber/setenv fiber table)\n\n"
-             "Sets the environment table for a fiber. Set to nil to remove the current "
-             "environment.")
-    },
-    {NULL, NULL, NULL}
-};
+JANET_CORE_FN(cfun_fiber_can_resume,
+              "(fiber/can-resume? fiber)",
+              "Check if a fiber is finished and cannot be resumed.") {
+    janet_fixarity(argc, 1);
+    JanetFiber *fiber = janet_getfiber(argv, 0);
+    JanetFiberStatus s = janet_fiber_status(fiber);
+    int isFinished = s == JANET_STATUS_DEAD ||
+                     s == JANET_STATUS_ERROR ||
+                     s == JANET_STATUS_USER0 ||
+                     s == JANET_STATUS_USER1 ||
+                     s == JANET_STATUS_USER2 ||
+                     s == JANET_STATUS_USER3 ||
+                     s == JANET_STATUS_USER4;
+    return janet_wrap_boolean(!isFinished);
+}
+
+JANET_CORE_FN(cfun_fiber_last_value,
+              "(fiber/last-value)",
+              "Get the last value returned or signaled from the fiber.") {
+    janet_fixarity(argc, 1);
+    JanetFiber *fiber = janet_getfiber(argv, 0);
+    return fiber->last_value;
+}
 
 /* Module entry point */
 void janet_lib_fiber(JanetTable *env) {
-    janet_core_cfuns(env, NULL, fiber_cfuns);
+    JanetRegExt fiber_cfuns[] = {
+        JANET_CORE_REG("fiber/new", cfun_fiber_new),
+        JANET_CORE_REG("fiber/status", cfun_fiber_status),
+        JANET_CORE_REG("fiber/root", cfun_fiber_root),
+        JANET_CORE_REG("fiber/current", cfun_fiber_current),
+        JANET_CORE_REG("fiber/maxstack", cfun_fiber_maxstack),
+        JANET_CORE_REG("fiber/setmaxstack", cfun_fiber_setmaxstack),
+        JANET_CORE_REG("fiber/getenv", cfun_fiber_getenv),
+        JANET_CORE_REG("fiber/setenv", cfun_fiber_setenv),
+        JANET_CORE_REG("fiber/can-resume?", cfun_fiber_can_resume),
+        JANET_CORE_REG("fiber/last-value", cfun_fiber_last_value),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, fiber_cfuns);
 }

src/core/fiber.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -27,7 +27,38 @@
 #include <janet.h>
 #endif
 
-extern JANET_THREAD_LOCAL JanetFiber *janet_vm_fiber;
+/* Fiber signal masks. */
+#define JANET_FIBER_MASK_ERROR 2
+#define JANET_FIBER_MASK_DEBUG 4
+#define JANET_FIBER_MASK_YIELD 8
+
+#define JANET_FIBER_MASK_USER0 (16 << 0)
+#define JANET_FIBER_MASK_USER1 (16 << 1)
+#define JANET_FIBER_MASK_USER2 (16 << 2)
+#define JANET_FIBER_MASK_USER3 (16 << 3)
+#define JANET_FIBER_MASK_USER4 (16 << 4)
+#define JANET_FIBER_MASK_USER5 (16 << 5)
+#define JANET_FIBER_MASK_USER6 (16 << 6)
+#define JANET_FIBER_MASK_USER7 (16 << 7)
+#define JANET_FIBER_MASK_USER8 (16 << 8)
+#define JANET_FIBER_MASK_USER9 (16 << 9)
+
+#define JANET_FIBER_MASK_USERN(N) (16 << (N))
+#define JANET_FIBER_MASK_USER 0x3FF0
+
+#define JANET_FIBER_STATUS_MASK 0x3F0000
+#define JANET_FIBER_RESUME_SIGNAL 0x400000
+#define JANET_FIBER_STATUS_OFFSET 16
+
+#define JANET_FIBER_BREAKPOINT       0x1000000
+#define JANET_FIBER_RESUME_NO_USEVAL 0x2000000
+#define JANET_FIBER_RESUME_NO_SKIP   0x4000000
+#define JANET_FIBER_DID_LONGJUMP     0x8000000
+#define JANET_FIBER_FLAG_MASK        0xF000000
+
+#define JANET_FIBER_EV_FLAG_CANCELED 0x10000
+#define JANET_FIBER_EV_FLAG_SUSPENDED 0x20000
+#define JANET_FIBER_FLAG_ROOT 0x40000
 
 #define janet_fiber_set_status(f, s) do {\
     (f)->flags &= ~JANET_FIBER_STATUS_MASK;\
@@ -45,5 +76,11 @@ int janet_fiber_funcframe(JanetFiber *fiber, JanetFunction *func);
 int janet_fiber_funcframe_tail(JanetFiber *fiber, JanetFunction *func);
 void janet_fiber_cframe(JanetFiber *fiber, JanetCFunction cfun);
 void janet_fiber_popframe(JanetFiber *fiber);
+void janet_env_maybe_detach(JanetFuncEnv *env);
+int janet_env_valid(JanetFuncEnv *env);
+
+#ifdef JANET_EV
+void janet_fiber_did_resume(JanetFiber *fiber);
+#endif
 
 #endif

src/core/gc.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,24 +21,16 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "state.h"
 #include "symcache.h"
 #include "gc.h"
 #include "util.h"
+#include "fiber.h"
+#include "vector.h"
 #endif
 
-/* GC State */
-JANET_THREAD_LOCAL void *janet_vm_blocks;
-JANET_THREAD_LOCAL uint32_t janet_vm_gc_interval;
-JANET_THREAD_LOCAL uint32_t janet_vm_next_collection;
-JANET_THREAD_LOCAL int janet_vm_gc_suspend = 0;
-
-/* Roots */
-JANET_THREAD_LOCAL Janet *janet_vm_roots;
-JANET_THREAD_LOCAL uint32_t janet_vm_root_count;
-JANET_THREAD_LOCAL uint32_t janet_vm_root_capacity;
-
 /* Helpers for marking the various gc types */
 static void janet_mark_funcenv(JanetFuncEnv *env);
 static void janet_mark_funcdef(JanetFuncDef *def);
@@ -52,9 +44,14 @@ static void janet_mark_string(const uint8_t *str);
 static void janet_mark_fiber(JanetFiber *fiber);
 static void janet_mark_abstract(void *adata);
 
-/* Local state that is only temporary */
+/* Local state that is only temporary for gc */
 static JANET_THREAD_LOCAL uint32_t depth = JANET_RECURSION_GUARD;
-static JANET_THREAD_LOCAL uint32_t orig_rootcount;
+static JANET_THREAD_LOCAL size_t orig_rootcount;
+
+/* Hint to the GC that we may need to collect */
+void janet_gcpressure(size_t s) {
+    janet_vm.next_collection += s;
+}
 
 /* Mark a value */
 void janet_mark(Janet x) {
@@ -108,6 +105,14 @@ static void janet_mark_buffer(JanetBuffer *buffer) {
 }
 
 static void janet_mark_abstract(void *adata) {
+#ifdef JANET_EV
+    /* Check if abstract type is a threaded abstract type. If it is, marking means
+     * updating the threaded_abstract table. */
+    if ((janet_abstract_head(adata)->gc.flags & JANET_MEM_TYPEBITS) == JANET_MEMORY_THREADED_ABSTRACT) {
+        janet_table_put(&janet_vm.threaded_abstracts, janet_wrap_abstract(adata), janet_wrap_true());
+        return;
+    }
+#endif
     if (janet_gc_reachable(janet_abstract_head(adata)))
         return;
     janet_gc_mark(janet_abstract_head(adata));
@@ -118,6 +123,8 @@ static void janet_mark_abstract(void *adata) {
 
 /* Mark a bunch of items in memory */
 static void janet_mark_many(const Janet *values, int32_t n) {
+    if (values == NULL)
+        return;
     const Janet *end = values + n;
     while (values < end) {
         janet_mark(*values);
@@ -155,10 +162,13 @@ recur: /* Manual tail recursion */
 }
 
 static void janet_mark_struct(const JanetKV *st) {
+recur:
     if (janet_gc_reachable(janet_struct_head(st)))
         return;
     janet_gc_mark(janet_struct_head(st));
     janet_mark_kvs(st, janet_struct_capacity(st));
+    st = janet_struct_proto(st);
+    if (st) goto recur;
 }
 
 static void janet_mark_tuple(const Janet *tuple) {
@@ -173,7 +183,10 @@ static void janet_mark_funcenv(JanetFuncEnv *env) {
     if (janet_gc_reachable(env))
         return;
     janet_gc_mark(env);
-    if (env->offset) {
+    /* If closure env references a dead fiber, we can just copy out the stack frame we need so
+     * we don't need to keep around the whole dead fiber. */
+    janet_env_maybe_detach(env);
+    if (env->offset > 0) {
         /* On stack */
         janet_mark_fiber(env->as.fiber);
     } else {
@@ -204,11 +217,14 @@ static void janet_mark_function(JanetFunction *func) {
     if (janet_gc_reachable(func))
         return;
     janet_gc_mark(func);
-    numenvs = func->def->environments_length;
-    for (i = 0; i < numenvs; ++i) {
-        janet_mark_funcenv(func->envs[i]);
+    if (NULL != func->def) {
+        /* this should always be true, except if function is only partially constructed */
+        numenvs = func->def->environments_length;
+        for (i = 0; i < numenvs; ++i) {
+            janet_mark_funcenv(func->envs[i]);
+        }
+        janet_mark_funcdef(func->def);
     }
-    janet_mark_funcdef(func->def);
 }
 
 static void janet_mark_fiber(JanetFiber *fiber) {
@@ -219,6 +235,8 @@ recur:
         return;
     janet_gc_mark(fiber);
 
+    janet_mark(fiber->last_value);
+
     /* Mark values on the argument stack */
     janet_mark_many(fiber->data + fiber->stackstart,
                     fiber->stacktop - fiber->stackstart);
@@ -240,6 +258,12 @@ recur:
     if (fiber->env)
         janet_mark_table(fiber->env);
 
+#ifdef JANET_EV
+    if (fiber->supervisor_channel) {
+        janet_mark_abstract(fiber->supervisor_channel);
+    }
+#endif
+
     /* Explicit tail recursion */
     if (fiber->child) {
         fiber = fiber->child;
@@ -257,13 +281,13 @@ static void janet_deinit_block(JanetGCObject *mem) {
             janet_symbol_deinit(((JanetStringHead *) mem)->data);
             break;
         case JANET_MEMORY_ARRAY:
-            janet_array_deinit((JanetArray *) mem);
+            janet_free(((JanetArray *) mem)->data);
             break;
         case JANET_MEMORY_TABLE:
-            janet_table_deinit((JanetTable *) mem);
+            janet_free(((JanetTable *) mem)->data);
             break;
         case JANET_MEMORY_FIBER:
-            free(((JanetFiber *)mem)->data);
+            janet_free(((JanetFiber *)mem)->data);
             break;
         case JANET_MEMORY_BUFFER:
             janet_buffer_deinit((JanetBuffer *) mem);
@@ -278,17 +302,18 @@ static void janet_deinit_block(JanetGCObject *mem) {
         case JANET_MEMORY_FUNCENV: {
             JanetFuncEnv *env = (JanetFuncEnv *)mem;
             if (0 == env->offset)
-                free(env->as.values);
+                janet_free(env->as.values);
         }
         break;
         case JANET_MEMORY_FUNCDEF: {
             JanetFuncDef *def = (JanetFuncDef *)mem;
             /* TODO - get this all with one alloc and one free */
-            free(def->defs);
-            free(def->environments);
-            free(def->constants);
-            free(def->bytecode);
-            free(def->sourcemap);
+            janet_free(def->defs);
+            janet_free(def->environments);
+            janet_free(def->constants);
+            janet_free(def->bytecode);
+            janet_free(def->sourcemap);
+            janet_free(def->closure_bitset);
         }
         break;
     }
@@ -298,24 +323,61 @@ static void janet_deinit_block(JanetGCObject *mem) {
  * marked as reachable. Flip the gc color flag for next sweep. */
 void janet_sweep() {
     JanetGCObject *previous = NULL;
-    JanetGCObject *current = janet_vm_blocks;
+    JanetGCObject *current = janet_vm.blocks;
     JanetGCObject *next;
     while (NULL != current) {
-        next = current->next;
+        next = current->data.next;
         if (current->flags & (JANET_MEM_REACHABLE | JANET_MEM_DISABLED)) {
             previous = current;
             current->flags &= ~JANET_MEM_REACHABLE;
         } else {
+            janet_vm.block_count--;
             janet_deinit_block(current);
             if (NULL != previous) {
-                previous->next = next;
+                previous->data.next = next;
             } else {
-                janet_vm_blocks = next;
+                janet_vm.blocks = next;
             }
-            free(current);
+            janet_free(current);
         }
         current = next;
     }
+#ifdef JANET_EV
+    /* Sweep threaded abstract types for references to decrement */
+    JanetKV *items = janet_vm.threaded_abstracts.data;
+    for (int32_t i = 0; i < janet_vm.threaded_abstracts.capacity; i++) {
+        if (janet_checktype(items[i].key, JANET_ABSTRACT)) {
+
+            /* If item was not visited during the mark phase, then this
+             * abstract type isn't present in the heap and needs its refcount
+             * decremented, and shouuld be removed from table. If the refcount is
+             * then 0, the item will be collected. This ensures that only one interpreter
+             * will clean up the threaded abstract. */
+
+            /* If not visited... */
+            if (!janet_truthy(items[i].value)) {
+                void *abst = janet_unwrap_abstract(items[i].key);
+                if (0 == janet_abstract_decref(abst)) {
+                    /* Run finalizer */
+                    JanetAbstractHead *head = janet_abstract_head(abst);
+                    if (head->type->gc) {
+                        janet_assert(!head->type->gc(head->data, head->size), "finalizer failed");
+                    }
+                    /* Mark as tombstone in place */
+                    items[i].key = janet_wrap_nil();
+                    items[i].value = janet_wrap_false();
+                    janet_vm.threaded_abstracts.deleted++;
+                    janet_vm.threaded_abstracts.count--;
+                    /* Free memory */
+                    janet_free(janet_abstract_head(abst));
+                }
+            }
+
+            /* Reset for next sweep */
+            items[i].value = janet_wrap_false();
+        }
+    }
+#endif
 }
 
 /* Allocate some memory that is tracked for garbage collection */
@@ -323,8 +385,8 @@ void *janet_gcalloc(enum JanetMemoryType type, size_t size) {
     JanetGCObject *mem;
 
     /* Make sure everything is inited */
-    janet_assert(NULL != janet_vm_cache, "please initialize janet before use");
-    mem = malloc(size);
+    janet_assert(NULL != janet_vm.cache, "please initialize janet before use");
+    mem = janet_malloc(size);
 
     /* Check for bad malloc */
     if (NULL == mem) {
@@ -335,44 +397,78 @@ void *janet_gcalloc(enum JanetMemoryType type, size_t size) {
     mem->flags = type;
 
     /* Prepend block to heap list */
-    janet_vm_next_collection += (int32_t) size;
-    mem->next = janet_vm_blocks;
-    janet_vm_blocks = mem;
+    janet_vm.next_collection += size;
+    mem->data.next = janet_vm.blocks;
+    janet_vm.blocks = mem;
+    janet_vm.block_count++;
 
     return (void *)mem;
 }
 
+static void free_one_scratch(JanetScratch *s) {
+    if (NULL != s->finalize) {
+        s->finalize((char *) s->mem);
+    }
+    janet_free(s);
+}
+
+/* Free all allocated scratch memory */
+static void janet_free_all_scratch(void) {
+    for (size_t i = 0; i < janet_vm.scratch_len; i++) {
+        free_one_scratch(janet_vm.scratch_mem[i]);
+    }
+    janet_vm.scratch_len = 0;
+}
+
+static JanetScratch *janet_mem2scratch(void *mem) {
+    JanetScratch *s = (JanetScratch *)mem;
+    return s - 1;
+}
+
 /* Run garbage collection */
 void janet_collect(void) {
     uint32_t i;
-    if (janet_vm_gc_suspend) return;
+    if (janet_vm.gc_suspend) return;
     depth = JANET_RECURSION_GUARD;
-    orig_rootcount = janet_vm_root_count;
+    /* Try and prevent many major collections back to back.
+     * A full collection will take O(janet_vm.block_count) time.
+     * If we have a large heap, make sure our interval is not too
+     * small so we won't make many collections over it. This is just a
+     * heuristic for automatically changing the gc interval */
+    if (janet_vm.block_count * 8 > janet_vm.gc_interval) {
+        janet_vm.gc_interval = janet_vm.block_count * sizeof(JanetGCObject);
+    }
+    orig_rootcount = janet_vm.root_count;
+#ifdef JANET_EV
+    janet_ev_mark();
+#endif
+    janet_mark_fiber(janet_vm.root_fiber);
     for (i = 0; i < orig_rootcount; i++)
-        janet_mark(janet_vm_roots[i]);
-    while (orig_rootcount < janet_vm_root_count) {
-        Janet x = janet_vm_roots[--janet_vm_root_count];
+        janet_mark(janet_vm.roots[i]);
+    while (orig_rootcount < janet_vm.root_count) {
+        Janet x = janet_vm.roots[--janet_vm.root_count];
         janet_mark(x);
     }
     janet_sweep();
-    janet_vm_next_collection = 0;
+    janet_vm.next_collection = 0;
+    janet_free_all_scratch();
 }
 
 /* Add a root value to the GC. This prevents the GC from removing a value
  * and all of its children. If gcroot is called on a value n times, unroot
  * must also be called n times to remove it as a gc root. */
 void janet_gcroot(Janet root) {
-    uint32_t newcount = janet_vm_root_count + 1;
-    if (newcount > janet_vm_root_capacity) {
-        uint32_t newcap = 2 * newcount;
-        janet_vm_roots = realloc(janet_vm_roots, sizeof(Janet) * newcap);
-        if (NULL == janet_vm_roots) {
+    size_t newcount = janet_vm.root_count + 1;
+    if (newcount > janet_vm.root_capacity) {
+        size_t newcap = 2 * newcount;
+        janet_vm.roots = janet_realloc(janet_vm.roots, sizeof(Janet) * newcap);
+        if (NULL == janet_vm.roots) {
             JANET_OUT_OF_MEMORY;
         }
-        janet_vm_root_capacity = newcap;
+        janet_vm.root_capacity = newcap;
     }
-    janet_vm_roots[janet_vm_root_count] = root;
-    janet_vm_root_count = newcount;
+    janet_vm.roots[janet_vm.root_count] = root;
+    janet_vm.root_count = newcount;
 }
 
 /* Identity equality for GC purposes */
@@ -393,11 +489,11 @@ static int janet_gc_idequals(Janet lhs, Janet rhs) {
 /* Remove a root value from the GC. This allows the gc to potentially reclaim
  * a value and all its children. */
 int janet_gcunroot(Janet root) {
-    Janet *vtop = janet_vm_roots + janet_vm_root_count;
+    Janet *vtop = janet_vm.roots + janet_vm.root_count;
     /* Search from top to bottom as access is most likely LIFO */
-    for (Janet *v = janet_vm_roots; v < vtop; v++) {
+    for (Janet *v = janet_vm.roots; v < vtop; v++) {
         if (janet_gc_idequals(root, *v)) {
-            *v = janet_vm_roots[--janet_vm_root_count];
+            *v = janet_vm.roots[--janet_vm.root_count];
             return 1;
         }
     }
@@ -406,12 +502,12 @@ int janet_gcunroot(Janet root) {
 
 /* Remove a root value from the GC. This sets the effective reference count to 0. */
 int janet_gcunrootall(Janet root) {
-    Janet *vtop = janet_vm_roots + janet_vm_root_count;
+    Janet *vtop = janet_vm.roots + janet_vm.root_count;
     int ret = 0;
     /* Search from top to bottom as access is most likely LIFO */
-    for (Janet *v = janet_vm_roots; v < vtop; v++) {
+    for (Janet *v = janet_vm.roots; v < vtop; v++) {
         if (janet_gc_idequals(root, *v)) {
-            *v = janet_vm_roots[--janet_vm_root_count];
+            *v = janet_vm.roots[--janet_vm.root_count];
             vtop--;
             ret = 1;
         }
@@ -421,20 +517,108 @@ int janet_gcunrootall(Janet root) {
 
 /* Free all allocated memory */
 void janet_clear_memory(void) {
-    JanetGCObject *current = janet_vm_blocks;
+#ifdef JANET_EV
+    JanetKV *items = janet_vm.threaded_abstracts.data;
+    for (int32_t i = 0; i < janet_vm.threaded_abstracts.capacity; i++) {
+        if (janet_checktype(items[i].key, JANET_ABSTRACT)) {
+            void *abst = janet_unwrap_abstract(items[i].key);
+            if (0 == janet_abstract_decref(abst)) {
+                JanetAbstractHead *head = janet_abstract_head(abst);
+                if (head->type->gc) {
+                    janet_assert(!head->type->gc(head->data, head->size), "finalizer failed");
+                }
+                janet_free(janet_abstract_head(abst));
+            }
+        }
+    }
+#endif
+    JanetGCObject *current = janet_vm.blocks;
     while (NULL != current) {
         janet_deinit_block(current);
-        JanetGCObject *next = current->next;
-        free(current);
+        JanetGCObject *next = current->data.next;
+        janet_free(current);
         current = next;
     }
-    janet_vm_blocks = NULL;
+    janet_vm.blocks = NULL;
+    janet_free_all_scratch();
+    janet_free(janet_vm.scratch_mem);
 }
 
 /* Primitives for suspending GC. */
 int janet_gclock(void) {
-    return janet_vm_gc_suspend++;
+    return janet_vm.gc_suspend++;
 }
 void janet_gcunlock(int handle) {
-    janet_vm_gc_suspend = handle;
+    janet_vm.gc_suspend = handle;
+}
+
+/* Scratch memory API */
+
+void *janet_smalloc(size_t size) {
+    JanetScratch *s = janet_malloc(sizeof(JanetScratch) + size);
+    if (NULL == s) {
+        JANET_OUT_OF_MEMORY;
+    }
+    s->finalize = NULL;
+    if (janet_vm.scratch_len == janet_vm.scratch_cap) {
+        size_t newcap = 2 * janet_vm.scratch_cap + 2;
+        JanetScratch **newmem = (JanetScratch **) janet_realloc(janet_vm.scratch_mem, newcap * sizeof(JanetScratch));
+        if (NULL == newmem) {
+            JANET_OUT_OF_MEMORY;
+        }
+        janet_vm.scratch_cap = newcap;
+        janet_vm.scratch_mem = newmem;
+    }
+    janet_vm.scratch_mem[janet_vm.scratch_len++] = s;
+    return (char *)(s->mem);
+}
+
+void *janet_scalloc(size_t nmemb, size_t size) {
+    if (nmemb && size > SIZE_MAX / nmemb) {
+        JANET_OUT_OF_MEMORY;
+    }
+    size_t n = nmemb * size;
+    void *p = janet_smalloc(n);
+    memset(p, 0, n);
+    return p;
+}
+
+void *janet_srealloc(void *mem, size_t size) {
+    if (NULL == mem) return janet_smalloc(size);
+    JanetScratch *s = janet_mem2scratch(mem);
+    if (janet_vm.scratch_len) {
+        for (size_t i = janet_vm.scratch_len - 1; ; i--) {
+            if (janet_vm.scratch_mem[i] == s) {
+                JanetScratch *news = janet_realloc(s, size + sizeof(JanetScratch));
+                if (NULL == news) {
+                    JANET_OUT_OF_MEMORY;
+                }
+                janet_vm.scratch_mem[i] = news;
+                return (char *)(news->mem);
+            }
+            if (i == 0) break;
+        }
+    }
+    JANET_EXIT("invalid janet_srealloc");
+}
+
+void janet_sfinalizer(void *mem, JanetScratchFinalizer finalizer) {
+    JanetScratch *s = janet_mem2scratch(mem);
+    s->finalize = finalizer;
+}
+
+void janet_sfree(void *mem) {
+    if (NULL == mem) return;
+    JanetScratch *s = janet_mem2scratch(mem);
+    if (janet_vm.scratch_len) {
+        for (size_t i = janet_vm.scratch_len - 1; ; i--) {
+            if (janet_vm.scratch_mem[i] == s) {
+                janet_vm.scratch_mem[i] = janet_vm.scratch_mem[--janet_vm.scratch_len];
+                free_one_scratch(s);
+                return;
+            }
+            if (i == 0) break;
+        }
+    }
+    JANET_EXIT("invalid janet_sfree");
 }

src/core/gc.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -24,6 +24,7 @@
 #define JANET_GC_H
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #endif
 
@@ -54,10 +55,11 @@ enum JanetMemoryType {
     JANET_MEMORY_FUNCTION,
     JANET_MEMORY_ABSTRACT,
     JANET_MEMORY_FUNCENV,
-    JANET_MEMORY_FUNCDEF
+    JANET_MEMORY_FUNCDEF,
+    JANET_MEMORY_THREADED_ABSTRACT,
 };
 
-/* To allocate collectable memory, one must calk janet_alloc, initialize the memory,
+/* To allocate collectable memory, one must call janet_alloc, initialize the memory,
  * and then call when janet_enablegc when it is initailize and reachable by the gc (on the JANET stack) */
 void *janet_gcalloc(enum JanetMemoryType type, size_t size);
 

src/core/inttypes.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose & contributors
+* Copyright (c) 2022 Calvin Rose & contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -20,46 +20,70 @@
 * IN THE SOFTWARE.
 */
 
+#ifndef JANET_AMALG
+#include "features.h"
+#include <janet.h>
+#include "util.h"
+#endif
+
 #include <errno.h>
 #include <stdlib.h>
 #include <limits.h>
 #include <inttypes.h>
 #include <math.h>
 
-#ifndef JANET_AMALG
-#include <janet.h>
-#include "util.h"
-#endif
-
 /* Conditional compilation */
 #ifdef JANET_INT_TYPES
 
 #define MAX_INT_IN_DBL 9007199254740992ULL /* 2^53 */
 
-static Janet it_s64_get(void *p, Janet key);
-static Janet it_u64_get(void *p, Janet key);
+static int it_s64_get(void *p, Janet key, Janet *out);
+static int it_u64_get(void *p, Janet key, Janet *out);
+static Janet janet_int64_next(void *p, Janet key);
+static Janet janet_uint64_next(void *p, Janet key);
+
+static int32_t janet_int64_hash(void *p1, size_t size) {
+    (void) size;
+    int32_t *words = p1;
+    return words[0] ^ words[1];
+}
+
+static int janet_int64_compare(void *p1, void *p2) {
+    int64_t x = *((int64_t *)p1);
+    int64_t y = *((int64_t *)p2);
+    return x == y ? 0 : x < y ? -1 : 1;
+}
+
+static int janet_uint64_compare(void *p1, void *p2) {
+    uint64_t x = *((uint64_t *)p1);
+    uint64_t y = *((uint64_t *)p2);
+    return x == y ? 0 : x < y ? -1 : 1;
+}
 
 static void int64_marshal(void *p, JanetMarshalContext *ctx) {
+    janet_marshal_abstract(ctx, p);
     janet_marshal_int64(ctx, *((int64_t *)p));
 }
 
-static void int64_unmarshal(void *p, JanetMarshalContext *ctx) {
-    *((int64_t *)p) = janet_unmarshal_int64(ctx);
+static void *int64_unmarshal(JanetMarshalContext *ctx) {
+    int64_t *p = janet_unmarshal_abstract(ctx, sizeof(int64_t));
+    p[0] = janet_unmarshal_int64(ctx);
+    return p;
 }
 
 static void it_s64_tostring(void *p, JanetBuffer *buffer) {
     char str[32];
-    sprintf(str, "<core/s64 %" PRId64 ">", *((int64_t *)p));
+    sprintf(str, "%" PRId64, *((int64_t *)p));
     janet_buffer_push_cstring(buffer, str);
 }
 
 static void it_u64_tostring(void *p, JanetBuffer *buffer) {
     char str[32];
-    sprintf(str, "<core/u64 %" PRIu64 ">", *((uint64_t *)p));
+    sprintf(str, "%" PRIu64, *((uint64_t *)p));
     janet_buffer_push_cstring(buffer, str);
 }
 
-static const JanetAbstractType it_s64_type = {
+const JanetAbstractType janet_s64_type = {
     "core/s64",
     NULL,
     NULL,
@@ -67,10 +91,14 @@ static const JanetAbstractType it_s64_type = {
     NULL,
     int64_marshal,
     int64_unmarshal,
-    it_s64_tostring
+    it_s64_tostring,
+    janet_int64_compare,
+    janet_int64_hash,
+    janet_int64_next,
+    JANET_ATEND_NEXT
 };
 
-static const JanetAbstractType it_u64_type = {
+const JanetAbstractType janet_u64_type = {
     "core/u64",
     NULL,
     NULL,
@@ -78,7 +106,11 @@ static const JanetAbstractType it_u64_type = {
     NULL,
     int64_marshal,
     int64_unmarshal,
-    it_u64_tostring
+    it_u64_tostring,
+    janet_uint64_compare,
+    janet_int64_hash,
+    janet_uint64_next,
+    JANET_ATEND_NEXT
 };
 
 int64_t janet_unwrap_s64(Janet x) {
@@ -100,13 +132,13 @@ int64_t janet_unwrap_s64(Janet x) {
         }
         case JANET_ABSTRACT: {
             void *abst = janet_unwrap_abstract(x);
-            if (janet_abstract_type(abst) == &it_s64_type ||
-                    (janet_abstract_type(abst) == &it_u64_type))
+            if (janet_abstract_type(abst) == &janet_s64_type ||
+                    (janet_abstract_type(abst) == &janet_u64_type))
                 return *(int64_t *)abst;
             break;
         }
     }
-    janet_panic("bad s64 initializer");
+    janet_panicf("bad s64 initializer: %t", x);
     return 0;
 }
 
@@ -116,7 +148,9 @@ uint64_t janet_unwrap_u64(Janet x) {
             break;
         case JANET_NUMBER : {
             double dbl = janet_unwrap_number(x);
-            if ((dbl >= 0) && (dbl <= MAX_INT_IN_DBL))
+            /* Allow negative values to be cast to "wrap around".
+             * This let's addition and subtraction work as expected. */
+            if (fabs(dbl) <=  MAX_INT_IN_DBL)
                 return (uint64_t)dbl;
             break;
         }
@@ -129,94 +163,299 @@ uint64_t janet_unwrap_u64(Janet x) {
         }
         case JANET_ABSTRACT: {
             void *abst = janet_unwrap_abstract(x);
-            if (janet_abstract_type(abst) == &it_s64_type ||
-                    (janet_abstract_type(abst) == &it_u64_type))
+            if (janet_abstract_type(abst) == &janet_s64_type ||
+                    (janet_abstract_type(abst) == &janet_u64_type))
                 return *(uint64_t *)abst;
             break;
         }
     }
-    janet_panic("bad u64 initializer");
+    janet_panicf("bad u64 initializer: %t", x);
     return 0;
 }
 
 JanetIntType janet_is_int(Janet x) {
     if (!janet_checktype(x, JANET_ABSTRACT)) return JANET_INT_NONE;
     const JanetAbstractType *at = janet_abstract_type(janet_unwrap_abstract(x));
-    return (at == &it_s64_type) ? JANET_INT_S64 :
-           ((at == &it_u64_type) ? JANET_INT_U64 :
+    return (at == &janet_s64_type) ? JANET_INT_S64 :
+           ((at == &janet_u64_type) ? JANET_INT_U64 :
             JANET_INT_NONE);
 }
 
 Janet janet_wrap_s64(int64_t x) {
-    int64_t *box = janet_abstract(&it_s64_type, sizeof(int64_t));
+    int64_t *box = janet_abstract(&janet_s64_type, sizeof(int64_t));
     *box = (int64_t)x;
     return janet_wrap_abstract(box);
 }
 
 Janet janet_wrap_u64(uint64_t x) {
-    uint64_t *box = janet_abstract(&it_u64_type, sizeof(uint64_t));
+    uint64_t *box = janet_abstract(&janet_u64_type, sizeof(uint64_t));
     *box = (uint64_t)x;
     return janet_wrap_abstract(box);
 }
 
-static Janet cfun_it_s64_new(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_it_s64_new,
+              "(int/s64 value)",
+              "Create a boxed signed 64 bit integer from a string value.") {
     janet_fixarity(argc, 1);
     return janet_wrap_s64(janet_unwrap_s64(argv[0]));
 }
 
-static Janet cfun_it_u64_new(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_it_u64_new,
+              "(int/u64 value)",
+              "Create a boxed unsigned 64 bit integer from a string value.") {
     janet_fixarity(argc, 1);
     return janet_wrap_u64(janet_unwrap_u64(argv[0]));
 }
 
+JANET_CORE_FN(cfun_to_number,
+              "(int/to-number value)",
+              "Convert an int/u64 or int/s64 to a number. Fails if the number is out of range for an int32.") {
+    janet_fixarity(argc, 1);
+    if (janet_type(argv[0]) == JANET_ABSTRACT) {
+        void *abst = janet_unwrap_abstract(argv[0]);
+
+        if (janet_abstract_type(abst) == &janet_s64_type) {
+            int64_t value = *((int64_t *)abst);
+            if (value > JANET_INTMAX_INT64) {
+                janet_panicf("cannot convert %q to a number, must be in the range [%q, %q]", argv[0], janet_wrap_number(JANET_INTMIN_DOUBLE), janet_wrap_number(JANET_INTMAX_DOUBLE));
+            }
+            if (value < -JANET_INTMAX_INT64) {
+                janet_panicf("cannot convert %q to a number, must be in the range [%q, %q]", argv[0], janet_wrap_number(JANET_INTMIN_DOUBLE), janet_wrap_number(JANET_INTMAX_DOUBLE));
+            }
+            return janet_wrap_number((double)value);
+        }
+
+        if (janet_abstract_type(abst) == &janet_u64_type) {
+            uint64_t value = *((uint64_t *)abst);
+            if (value > JANET_INTMAX_INT64) {
+                janet_panicf("cannot convert %q to a number, must be in the range [%q, %q]", argv[0], janet_wrap_number(JANET_INTMIN_DOUBLE), janet_wrap_number(JANET_INTMAX_DOUBLE));
+            }
+
+            return janet_wrap_number((double)value);
+        }
+    }
+
+    janet_panicf("expected int/u64 or int/s64, got %q", argv[0]);
+}
+
+JANET_CORE_FN(cfun_to_bytes,
+              "(int/to-bytes value &opt endianness buffer)",
+              "Write the bytes of an `int/s64` or `int/u64` into a buffer.\n"
+              "The `buffer` parameter specifies an existing buffer to write to, if unset a new buffer will be created.\n"
+              "Returns the modified buffer.\n"
+              "The `endianness` paramater indicates the byte order:\n"
+              "- `nil` (unset): system byte order\n"
+              "- `:le`: little-endian, least significant byte first\n"
+              "- `:be`: big-endian, most significant byte first\n") {
+    janet_arity(argc, 1, 3);
+    if (janet_is_int(argv[0]) == JANET_INT_NONE) {
+        janet_panicf("int/to-bytes: expected an int/s64 or int/u64, got %q", argv[0]);
+    }
+
+    int reverse = 0;
+    if (argc > 1 && !janet_checktype(argv[1], JANET_NIL)) {
+        JanetKeyword endianness_kw = janet_getkeyword(argv, 1);
+        if (!janet_cstrcmp(endianness_kw, "le")) {
+#if JANET_BIG_ENDIAN
+            reverse = 1;
+#endif
+        } else if (!janet_cstrcmp(endianness_kw, "be")) {
+#if JANET_LITTLE_ENDIAN
+            reverse = 1;
+#endif
+        } else {
+            janet_panicf("int/to-bytes: expected endianness :le, :be or nil, got %v", argv[1]);
+        }
+    }
+
+    JanetBuffer *buffer = NULL;
+    if (argc > 2 && !janet_checktype(argv[2], JANET_NIL)) {
+        if (!janet_checktype(argv[2], JANET_BUFFER)) {
+            janet_panicf("int/to-bytes: expected buffer or nil, got %q", argv[2]);
+        }
+
+        buffer = janet_unwrap_buffer(argv[2]);
+        janet_buffer_extra(buffer, 8);
+    } else {
+        buffer = janet_buffer(8);
+    }
+
+    uint8_t *bytes = janet_unwrap_abstract(argv[0]);
+    if (reverse) {
+        for (int i = 0; i < 8; ++i) {
+            buffer->data[buffer->count + 7 - i] = bytes[i];
+        }
+    } else {
+        memcpy(buffer->data + buffer->count, bytes, 8);
+    }
+    buffer->count += 8;
+
+    return janet_wrap_buffer(buffer);
+}
+
+/*
+ * Code to support polymorphic comparison.
+ * int/u64 and int/s64 support a "compare" method that allows
+ * comparison to each other, and to Janet numbers, using the
+ * "compare" "compare<" ... functions.
+ * In the following code explicit casts are sometimes used to help
+ * make it clear when int/float conversions are happening.
+ */
+static int compare_double_double(double x, double y) {
+    return (x < y) ? -1 : ((x > y) ? 1 : 0);
+}
+
+static int compare_int64_double(int64_t x, double y) {
+    if (isnan(y)) {
+        return 0; // clojure and python do this
+    } else if ((y > (- ((double) MAX_INT_IN_DBL))) && (y < ((double) MAX_INT_IN_DBL))) {
+        double dx = (double) x;
+        return compare_double_double(dx, y);
+    } else if (y > ((double) INT64_MAX)) {
+        return -1;
+    } else if (y < ((double) INT64_MIN)) {
+        return 1;
+    } else {
+        int64_t yi = (int64_t) y;
+        return (x < yi) ? -1 : ((x > yi) ? 1 : 0);
+    }
+}
+
+static int compare_uint64_double(uint64_t x, double y) {
+    if (isnan(y)) {
+        return 0; // clojure and python do this
+    } else if (y < 0) {
+        return 1;
+    } else if ((y >= 0) && (y < ((double) MAX_INT_IN_DBL))) {
+        double dx = (double) x;
+        return compare_double_double(dx, y);
+    } else if (y > ((double) UINT64_MAX)) {
+        return -1;
+    } else {
+        uint64_t yi = (uint64_t) y;
+        return (x < yi) ? -1 : ((x > yi) ? 1 : 0);
+    }
+}
+
+static Janet cfun_it_s64_compare(int32_t argc, Janet *argv) {
+    janet_fixarity(argc, 2);
+    if (janet_is_int(argv[0]) != JANET_INT_S64)
+        janet_panic("compare method requires int/s64 as first argument");
+    int64_t x = janet_unwrap_s64(argv[0]);
+    switch (janet_type(argv[1])) {
+        default:
+            break;
+        case JANET_NUMBER : {
+            double y = janet_unwrap_number(argv[1]);
+            return janet_wrap_number(compare_int64_double(x, y));
+        }
+        case JANET_ABSTRACT: {
+            void *abst = janet_unwrap_abstract(argv[1]);
+            if (janet_abstract_type(abst) == &janet_s64_type) {
+                int64_t y = *(int64_t *)abst;
+                return janet_wrap_number((x < y) ? -1 : (x > y ? 1 : 0));
+            } else if (janet_abstract_type(abst) == &janet_u64_type) {
+                // comparing signed to unsigned -- be careful!
+                uint64_t y = *(uint64_t *)abst;
+                if (x < 0) {
+                    return janet_wrap_number(-1);
+                } else if (y > INT64_MAX) {
+                    return janet_wrap_number(-1);
+                } else {
+                    int64_t y2 = (int64_t) y;
+                    return janet_wrap_number((x < y2) ? -1 : (x > y2 ? 1 : 0));
+                }
+            }
+            break;
+        }
+    }
+    return janet_wrap_nil();
+}
+
+static Janet cfun_it_u64_compare(int32_t argc, Janet *argv) {
+    janet_fixarity(argc, 2);
+    if (janet_is_int(argv[0]) != JANET_INT_U64)  // is this needed?
+        janet_panic("compare method requires int/u64 as first argument");
+    uint64_t x = janet_unwrap_u64(argv[0]);
+    switch (janet_type(argv[1])) {
+        default:
+            break;
+        case JANET_NUMBER : {
+            double y = janet_unwrap_number(argv[1]);
+            return janet_wrap_number(compare_uint64_double(x, y));
+        }
+        case JANET_ABSTRACT: {
+            void *abst = janet_unwrap_abstract(argv[1]);
+            if (janet_abstract_type(abst) == &janet_u64_type) {
+                uint64_t y = *(uint64_t *)abst;
+                return janet_wrap_number((x < y) ? -1 : (x > y ? 1 : 0));
+            } else if (janet_abstract_type(abst) == &janet_s64_type) {
+                // comparing unsigned to signed -- be careful!
+                int64_t y = *(int64_t *)abst;
+                if (y < 0) {
+                    return janet_wrap_number(1);
+                } else if (x > INT64_MAX) {
+                    return janet_wrap_number(1);
+                } else {
+                    int64_t x2 = (int64_t) x;
+                    return janet_wrap_number((x2 < y) ? -1 : (x2 > y ? 1 : 0));
+                }
+            }
+            break;
+        }
+    }
+    return janet_wrap_nil();
+}
+
 #define OPMETHOD(T, type, name, oper) \
 static Janet cfun_it_##type##_##name(int32_t argc, Janet *argv) { \
     janet_arity(argc, 2, -1); \
-    T *box = janet_abstract(&it_##type##_type, sizeof(T)); \
+    T *box = janet_abstract(&janet_##type##_type, sizeof(T)); \
     *box = janet_unwrap_##type(argv[0]); \
-    for (int i = 1; i < argc; i++) \
+    for (int32_t i = 1; i < argc; i++) \
         *box oper##= janet_unwrap_##type(argv[i]); \
     return janet_wrap_abstract(box); \
 } \
- \
-static Janet cfun_it_##type##_##name##_mut(int32_t argc, Janet *argv) { \
-    janet_arity(argc, 2, -1); \
-    T *box = janet_getabstract(argv,0,&it_##type##_type); \
-    for (int i = 1; i < argc; i++) \
-        *box oper##= janet_unwrap_##type(argv[i]); \
+
+#define OPMETHODINVERT(T, type, name, oper) \
+static Janet cfun_it_##type##_##name(int32_t argc, Janet *argv) { \
+    janet_fixarity(argc, 2); \
+    T *box = janet_abstract(&janet_##type##_type, sizeof(T)); \
+    *box = janet_unwrap_##type(argv[1]); \
+    *box oper##= janet_unwrap_##type(argv[0]); \
     return janet_wrap_abstract(box); \
-}
+} \
 
 #define DIVMETHOD(T, type, name, oper) \
 static Janet cfun_it_##type##_##name(int32_t argc, Janet *argv) { \
     janet_arity(argc, 2, -1);                       \
-    T *box = janet_abstract(&it_##type##_type, sizeof(T)); \
+    T *box = janet_abstract(&janet_##type##_type, sizeof(T)); \
     *box = janet_unwrap_##type(argv[0]); \
-    for (int i = 1; i < argc; i++) { \
+    for (int32_t i = 1; i < argc; i++) { \
       T value = janet_unwrap_##type(argv[i]); \
       if (value == 0) janet_panic("division by zero"); \
       *box oper##= value; \
     } \
     return janet_wrap_abstract(box); \
 } \
- \
-static Janet cfun_it_##type##_##name##_mut(int32_t argc, Janet *argv) { \
-    janet_arity(argc, 2, -1); \
-    T *box = janet_getabstract(argv,0,&it_##type##_type); \
-    for (int i = 1; i < argc; i++) { \
-      T value =  janet_unwrap_##type(argv[i]); \
-      if (value == 0) janet_panic("division by zero"); \
-      *box oper##= value; \
-    } \
+
+#define DIVMETHODINVERT(T, type, name, oper) \
+static Janet cfun_it_##type##_##name(int32_t argc, Janet *argv) { \
+    janet_fixarity(argc, 2);                       \
+    T *box = janet_abstract(&janet_##type##_type, sizeof(T)); \
+    *box = janet_unwrap_##type(argv[1]); \
+    T value = janet_unwrap_##type(argv[0]); \
+    if (value == 0) janet_panic("division by zero"); \
+    *box oper##= value; \
     return janet_wrap_abstract(box); \
-}
+} \
 
 #define DIVMETHOD_SIGNED(T, type, name, oper) \
 static Janet cfun_it_##type##_##name(int32_t argc, Janet *argv) { \
     janet_arity(argc, 2, -1);                       \
-    T *box = janet_abstract(&it_##type##_type, sizeof(T)); \
+    T *box = janet_abstract(&janet_##type##_type, sizeof(T)); \
     *box = janet_unwrap_##type(argv[0]); \
-    for (int i = 1; i < argc; i++) { \
+    for (int32_t i = 1; i < argc; i++) { \
       T value = janet_unwrap_##type(argv[i]); \
       if (value == 0) janet_panic("division by zero"); \
       if ((value == -1) && (*box == INT64_MIN)) janet_panic("INT64_MIN divided by -1"); \
@@ -224,163 +463,150 @@ static Janet cfun_it_##type##_##name(int32_t argc, Janet *argv) { \
     } \
     return janet_wrap_abstract(box); \
 } \
- \
-static Janet cfun_it_##type##_##name##_mut(int32_t argc, Janet *argv) { \
-    janet_arity(argc, 2, -1); \
-    T *box = janet_getabstract(argv,0,&it_##type##_type); \
-    for (int i = 1; i < argc; i++) { \
-      T value = janet_unwrap_##type(argv[i]); \
-      if (value == 0) janet_panic("division by zero"); \
-      if ((value == -1) && (*box == INT64_MIN)) janet_panic("INT64_MIN divided by -1"); \
-      *box oper##= value; \
-    } \
-    return janet_wrap_abstract(box); \
-}
 
-#define COMPMETHOD(T, type, name, oper) \
+#define DIVMETHODINVERT_SIGNED(T, type, name, oper) \
 static Janet cfun_it_##type##_##name(int32_t argc, Janet *argv) { \
-    janet_fixarity(argc, 2); \
-    T v1 = janet_unwrap_##type(argv[0]); \
-    T v2 = janet_unwrap_##type(argv[1]); \
-    return janet_wrap_boolean(v1 oper v2); \
+    janet_fixarity(argc, 2);                       \
+    T *box = janet_abstract(&janet_##type##_type, sizeof(T)); \
+    *box = janet_unwrap_##type(argv[1]); \
+    T value = janet_unwrap_##type(argv[0]); \
+    if (value == 0) janet_panic("division by zero"); \
+    if ((value == -1) && (*box == INT64_MIN)) janet_panic("INT64_MIN divided by -1"); \
+    *box oper##= value; \
+    return janet_wrap_abstract(box); \
+} \
+
+static Janet cfun_it_s64_mod(int32_t argc, Janet *argv) {
+    janet_fixarity(argc, 2);
+    int64_t *box = janet_abstract(&janet_s64_type, sizeof(int64_t));
+    int64_t op1 = janet_unwrap_s64(argv[0]);
+    int64_t op2 = janet_unwrap_s64(argv[1]);
+    int64_t x = op1 % op2;
+    *box = (op1 > 0)
+           ? ((op2 > 0) ? x : (0 == x ? x : x + op2))
+           : ((op2 > 0) ? (0 == x ? x : x + op2) : x);
+    return janet_wrap_abstract(box);
 }
 
 OPMETHOD(int64_t, s64, add, +)
 OPMETHOD(int64_t, s64, sub, -)
+OPMETHODINVERT(int64_t, s64, subi, -)
 OPMETHOD(int64_t, s64, mul, *)
 DIVMETHOD_SIGNED(int64_t, s64, div, /)
-DIVMETHOD_SIGNED(int64_t, s64, mod, %)
+DIVMETHOD_SIGNED(int64_t, s64, rem, %)
+DIVMETHODINVERT_SIGNED(int64_t, s64, divi, /)
 OPMETHOD(int64_t, s64, and, &)
 OPMETHOD(int64_t, s64, or, |)
 OPMETHOD(int64_t, s64, xor, ^)
 OPMETHOD(int64_t, s64, lshift, <<)
 OPMETHOD(int64_t, s64, rshift, >>)
-COMPMETHOD(int64_t, s64, lt, <)
-COMPMETHOD(int64_t, s64, gt, >)
-COMPMETHOD(int64_t, s64, le, <=)
-COMPMETHOD(int64_t, s64, ge, >=)
-COMPMETHOD(int64_t, s64, eq, ==)
-COMPMETHOD(int64_t, s64, ne, !=)
-
 OPMETHOD(uint64_t, u64, add, +)
 OPMETHOD(uint64_t, u64, sub, -)
+OPMETHODINVERT(uint64_t, u64, subi, -)
 OPMETHOD(uint64_t, u64, mul, *)
 DIVMETHOD(uint64_t, u64, div, /)
 DIVMETHOD(uint64_t, u64, mod, %)
+DIVMETHODINVERT(uint64_t, u64, divi, /)
 OPMETHOD(uint64_t, u64, and, &)
 OPMETHOD(uint64_t, u64, or, |)
 OPMETHOD(uint64_t, u64, xor, ^)
 OPMETHOD(uint64_t, u64, lshift, <<)
 OPMETHOD(uint64_t, u64, rshift, >>)
-COMPMETHOD(uint64_t, u64, lt, <)
-COMPMETHOD(uint64_t, u64, gt, >)
-COMPMETHOD(uint64_t, u64, le, <=)
-COMPMETHOD(uint64_t, u64, ge, >=)
-COMPMETHOD(uint64_t, u64, eq, ==)
-COMPMETHOD(uint64_t, u64, ne, !=)
 
 #undef OPMETHOD
 #undef DIVMETHOD
 #undef DIVMETHOD_SIGNED
 #undef COMPMETHOD
 
+
 static JanetMethod it_s64_methods[] = {
     {"+", cfun_it_s64_add},
+    {"r+", cfun_it_s64_add},
     {"-", cfun_it_s64_sub},
+    {"r-", cfun_it_s64_subi},
     {"*", cfun_it_s64_mul},
+    {"r*", cfun_it_s64_mul},
     {"/", cfun_it_s64_div},
-    {"%", cfun_it_s64_mod},
-    {"<", cfun_it_s64_lt},
-    {">", cfun_it_s64_gt},
-    {"<=", cfun_it_s64_le},
-    {">=", cfun_it_s64_ge},
-    {"==", cfun_it_s64_eq},
-    {"!=", cfun_it_s64_ne},
+    {"r/", cfun_it_s64_divi},
+    {"mod", cfun_it_s64_mod},
+    {"rmod", cfun_it_s64_mod},
+    {"%", cfun_it_s64_rem},
+    {"r%", cfun_it_s64_rem},
     {"&", cfun_it_s64_and},
+    {"r&", cfun_it_s64_and},
     {"|", cfun_it_s64_or},
+    {"r|", cfun_it_s64_or},
     {"^", cfun_it_s64_xor},
+    {"r^", cfun_it_s64_xor},
     {"<<", cfun_it_s64_lshift},
     {">>", cfun_it_s64_rshift},
-
-    {"+!", cfun_it_s64_add_mut},
-    {"-!", cfun_it_s64_sub_mut},
-    {"*!", cfun_it_s64_mul_mut},
-    {"/!", cfun_it_s64_div_mut},
-    {"%!", cfun_it_s64_mod_mut},
-    {"&!", cfun_it_s64_and_mut},
-    {"|!", cfun_it_s64_or_mut},
-    {"^!", cfun_it_s64_xor_mut},
-    {"<<!", cfun_it_s64_lshift_mut},
-    {">>!", cfun_it_s64_rshift_mut},
+    {"compare", cfun_it_s64_compare},
 
     {NULL, NULL}
 };
 
 static JanetMethod it_u64_methods[] = {
     {"+", cfun_it_u64_add},
+    {"r+", cfun_it_u64_add},
     {"-", cfun_it_u64_sub},
+    {"r-", cfun_it_u64_subi},
     {"*", cfun_it_u64_mul},
+    {"r*", cfun_it_u64_mul},
     {"/", cfun_it_u64_div},
+    {"r/", cfun_it_u64_divi},
+    {"mod", cfun_it_u64_mod},
+    {"rmod", cfun_it_u64_mod},
     {"%", cfun_it_u64_mod},
-    {"<", cfun_it_u64_lt},
-    {">", cfun_it_u64_gt},
-    {"<=", cfun_it_u64_le},
-    {">=", cfun_it_u64_ge},
-    {"==", cfun_it_u64_eq},
-    {"!=", cfun_it_u64_ne},
+    {"r%", cfun_it_u64_mod},
     {"&", cfun_it_u64_and},
+    {"r&", cfun_it_u64_and},
     {"|", cfun_it_u64_or},
+    {"r|", cfun_it_u64_or},
     {"^", cfun_it_u64_xor},
+    {"r^", cfun_it_u64_xor},
     {"<<", cfun_it_u64_lshift},
     {">>", cfun_it_u64_rshift},
-
-    {"+!", cfun_it_u64_add_mut},
-    {"-!", cfun_it_u64_sub_mut},
-    {"*!", cfun_it_u64_mul_mut},
-    {"/!", cfun_it_u64_div_mut},
-    {"%!", cfun_it_u64_mod_mut},
-    {"&!", cfun_it_u64_and_mut},
-    {"|!", cfun_it_u64_or_mut},
-    {"^!", cfun_it_u64_xor_mut},
-    {"<<!", cfun_it_u64_lshift_mut},
-    {">>!", cfun_it_u64_rshift_mut},
+    {"compare", cfun_it_u64_compare},
 
     {NULL, NULL}
 };
 
-static Janet it_s64_get(void *p, Janet key) {
+static Janet janet_int64_next(void *p, Janet key) {
     (void) p;
-    if (!janet_checktype(key, JANET_KEYWORD))
-        janet_panicf("expected keyword, got %v", key);
-    return janet_getmethod(janet_unwrap_keyword(key), it_s64_methods);
+    return janet_nextmethod(it_s64_methods, key);
 }
 
-static Janet it_u64_get(void *p, Janet key) {
+static Janet janet_uint64_next(void *p, Janet key) {
     (void) p;
-    if (!janet_checktype(key, JANET_KEYWORD))
-        janet_panicf("expected keyword, got %v", key);
-    return janet_getmethod(janet_unwrap_keyword(key), it_u64_methods);
+    return janet_nextmethod(it_u64_methods, key);
 }
 
-static const JanetReg it_cfuns[] = {
-    {
-        "int/s64", cfun_it_s64_new,
-        JDOC("(int/s64 value)\n\n"
-             "Create a boxed signed 64 bit integer from a string value.")
-    },
-    {
-        "int/u64", cfun_it_u64_new,
-        JDOC("(int/u64 value)\n\n"
-             "Create a boxed unsigned 64 bit integer from a string value.")
-    },
-    {NULL, NULL, NULL}
-};
+static int it_s64_get(void *p, Janet key, Janet *out) {
+    (void) p;
+    if (!janet_checktype(key, JANET_KEYWORD))
+        return 0;
+    return janet_getmethod(janet_unwrap_keyword(key), it_s64_methods, out);
+}
+
+static int it_u64_get(void *p, Janet key, Janet *out) {
+    (void) p;
+    if (!janet_checktype(key, JANET_KEYWORD))
+        return 0;
+    return janet_getmethod(janet_unwrap_keyword(key), it_u64_methods, out);
+}
 
 /* Module entry point */
 void janet_lib_inttypes(JanetTable *env) {
-    janet_core_cfuns(env, NULL, it_cfuns);
-    janet_register_abstract_type(&it_s64_type);
-    janet_register_abstract_type(&it_u64_type);
+    JanetRegExt it_cfuns[] = {
+        JANET_CORE_REG("int/s64", cfun_it_s64_new),
+        JANET_CORE_REG("int/u64", cfun_it_u64_new),
+        JANET_CORE_REG("int/to-number", cfun_to_number),
+        JANET_CORE_REG("int/to-bytes", cfun_to_bytes),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, it_cfuns);
+    janet_register_abstract_type(&janet_s64_type);
+    janet_register_abstract_type(&janet_u64_type);
 }
 
 #endif

src/core/io.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -20,149 +20,181 @@
 * IN THE SOFTWARE.
 */
 
-/* Compiler feature test macros for things */
-#define _DEFAULT_SOURCE
-#define _BSD_SOURCE
-
-#include <stdio.h>
-#include <errno.h>
-
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "util.h"
 #endif
 
-#define IO_WRITE 1
-#define IO_READ 2
-#define IO_APPEND 4
-#define IO_UPDATE 8
-#define IO_NOT_CLOSEABLE 16
-#define IO_CLOSED 32
-#define IO_BINARY 64
-#define IO_SERIALIZABLE 128
-#define IO_PIPED 256
+#include <stdio.h>
+#include <errno.h>
 
-typedef struct IOFile IOFile;
-struct IOFile {
-    FILE *file;
-    int flags;
-};
+#ifndef JANET_WINDOWS
+#include <fcntl.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#endif
 
 static int cfun_io_gc(void *p, size_t len);
-static Janet io_file_get(void *p, Janet);
+static int io_file_get(void *p, Janet key, Janet *out);
+static void io_file_marshal(void *p, JanetMarshalContext *ctx);
+static void *io_file_unmarshal(JanetMarshalContext *ctx);
+static Janet io_file_next(void *p, Janet key);
 
-JanetAbstractType cfun_io_filetype = {
+const JanetAbstractType janet_file_type = {
     "core/file",
     cfun_io_gc,
     NULL,
     io_file_get,
     NULL,
-    NULL,
-    NULL,
-    NULL
+    io_file_marshal,
+    io_file_unmarshal,
+    NULL, /* tostring */
+    NULL, /* compare */
+    NULL, /* hash */
+    io_file_next,
+    JANET_ATEND_NEXT
 };
 
 /* Check arguments to fopen */
-static int checkflags(const uint8_t *str) {
-    int flags = 0;
+static int32_t checkflags(const uint8_t *str) {
+    int32_t flags = 0;
     int32_t i;
     int32_t len = janet_string_length(str);
-    if (!len || len > 3)
-        janet_panic("file mode must have a length between 1 and 3");
+    if (!len || len > 10)
+        janet_panic("file mode must have a length between 1 and 10");
     switch (*str) {
         default:
             janet_panicf("invalid flag %c, expected w, a, or r", *str);
             break;
         case 'w':
-            flags |= IO_WRITE;
+            flags |= JANET_FILE_WRITE;
             break;
         case 'a':
-            flags |= IO_APPEND;
+            flags |= JANET_FILE_APPEND;
             break;
         case 'r':
-            flags |= IO_READ;
+            flags |= JANET_FILE_READ;
             break;
     }
     for (i = 1; i < len; i++) {
         switch (str[i]) {
             default:
-                janet_panicf("invalid flag %c, expected + or b", str[i]);
+                janet_panicf("invalid flag %c, expected +, b, or n", str[i]);
                 break;
             case '+':
-                if (flags & IO_UPDATE) return -1;
-                flags |= IO_UPDATE;
+                if (flags & JANET_FILE_UPDATE) return -1;
+                flags |= JANET_FILE_UPDATE;
                 break;
             case 'b':
-                if (flags & IO_BINARY) return -1;
-                flags |= IO_BINARY;
+                if (flags & JANET_FILE_BINARY) return -1;
+                flags |= JANET_FILE_BINARY;
+                break;
+            case 'n':
+                if (flags & JANET_FILE_NONIL) return -1;
+                flags |= JANET_FILE_NONIL;
                 break;
         }
     }
     return flags;
 }
 
-static Janet makef(FILE *f, int flags) {
-    IOFile *iof = (IOFile *) janet_abstract(&cfun_io_filetype, sizeof(IOFile));
+static void *makef(FILE *f, int32_t flags) {
+    JanetFile *iof = (JanetFile *) janet_abstract(&janet_file_type, sizeof(JanetFile));
     iof->file = f;
     iof->flags = flags;
-    return janet_wrap_abstract(iof);
+#ifndef JANET_WINDOWS
+    /* While we would like fopen to set cloexec by default (like O_CLOEXEC) with the e flag, that is
+     * not standard. */
+    if (!(flags & JANET_FILE_NOT_CLOSEABLE))
+        fcntl(fileno(f), F_SETFD, FD_CLOEXEC);
+#endif
+    return iof;
 }
 
 /* Open a process */
-#ifdef __EMSCRIPTEN__
-static Janet cfun_io_popen(int32_t argc, Janet *argv) {
-    (void) argc;
-    (void) argv;
-    janet_panic("not implemented on this platform");
-    return janet_wrap_nil();
-}
-#else
-static Janet cfun_io_popen(int32_t argc, Janet *argv) {
+#ifndef JANET_NO_PROCESSES
+JANET_CORE_FN(cfun_io_popen,
+              "(file/popen command &opt mode) (DEPRECATED for os/spawn)",
+              "Open a file that is backed by a process. The file must be opened in either "
+              "the :r (read) or the :w (write) mode. In :r mode, the stdout of the "
+              "process can be read from the file. In :w mode, the stdin of the process "
+              "can be written to. Returns the new file.") {
     janet_arity(argc, 1, 2);
     const uint8_t *fname = janet_getstring(argv, 0);
     const uint8_t *fmode = NULL;
-    int flags;
+    int32_t flags;
     if (argc == 2) {
         fmode = janet_getkeyword(argv, 1);
-        if (janet_string_length(fmode) != 1 ||
-                !(fmode[0] == 'r' || fmode[0] == 'w')) {
-            janet_panicf("invalid file mode :%S, expected :r or :w", fmode);
+        flags = JANET_FILE_PIPED | checkflags(fmode);
+        if (flags & (JANET_FILE_UPDATE | JANET_FILE_BINARY | JANET_FILE_APPEND)) {
+            janet_panicf("invalid popen file mode :%S, expected :r or :w", fmode);
         }
-        flags = IO_PIPED | (fmode[0] == 'r' ? IO_READ : IO_WRITE);
+        fmode = (const uint8_t *)((fmode[0] == 'r') ? "r" : "w");
     } else {
         fmode = (const uint8_t *)"r";
-        flags = IO_PIPED | IO_READ;
+        flags = JANET_FILE_PIPED | JANET_FILE_READ;
     }
 #ifdef JANET_WINDOWS
 #define popen _popen
 #endif
     FILE *f = popen((const char *)fname, (const char *)fmode);
     if (!f) {
+        if (flags & JANET_FILE_NONIL)
+            janet_panicf("failed to popen %s: %s", fname, strerror(errno));
         return janet_wrap_nil();
     }
-    return makef(f, flags);
+    return janet_makefile(f, flags);
 }
 #endif
 
-static Janet cfun_io_fopen(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_io_temp,
+              "(file/temp)",
+              "Open an anonymous temporary file that is removed on close. "
+              "Raises an error on failure.") {
+    (void)argv;
+    janet_fixarity(argc, 0);
+    // XXX use mkostemp when we can to avoid CLOEXEC race.
+    FILE *tmp = tmpfile();
+    if (!tmp)
+        janet_panicf("unable to create temporary file - %s", strerror(errno));
+    return janet_makefile(tmp, JANET_FILE_WRITE | JANET_FILE_READ | JANET_FILE_BINARY);
+}
+
+JANET_CORE_FN(cfun_io_fopen,
+              "(file/open path &opt mode)",
+              "Open a file. `path` is an absolute or relative path, and "
+              "`mode` is a set of flags indicating the mode to open the file in. "
+              "`mode` is a keyword where each character represents a flag. If the file "
+              "cannot be opened, returns nil, otherwise returns the new file handle. "
+              "Mode flags:\n\n"
+              "* r - allow reading from the file\n\n"
+              "* w - allow writing to the file\n\n"
+              "* a - append to the file\n\n"
+              "Following one of the initial flags, 0 or more of the following flags can be appended:\n\n"
+              "* b - open the file in binary mode (rather than text mode)\n\n"
+              "* + - append to the file instead of overwriting it\n\n"
+              "* n - error if the file cannot be opened instead of returning nil") {
     janet_arity(argc, 1, 2);
     const uint8_t *fname = janet_getstring(argv, 0);
     const uint8_t *fmode;
-    int flags;
+    int32_t flags;
     if (argc == 2) {
         fmode = janet_getkeyword(argv, 1);
         flags = checkflags(fmode);
     } else {
         fmode = (const uint8_t *)"r";
-        flags = IO_READ;
+        flags = JANET_FILE_READ;
     }
     FILE *f = fopen((const char *)fname, (const char *)fmode);
-    return f ? makef(f, flags) : janet_wrap_nil();
+    return f ? janet_makefile(f, flags)
+           : (flags & JANET_FILE_NONIL) ? (janet_panicf("failed to open file %s: %s", fname, strerror(errno)), janet_wrap_nil())
+           : janet_wrap_nil();
 }
 
 /* Read up to n bytes into buffer. */
-static void read_chunk(IOFile *iof, JanetBuffer *buffer, int32_t nBytesMax) {
-    if (!(iof->flags & (IO_READ | IO_UPDATE)))
+static void read_chunk(JanetFile *iof, JanetBuffer *buffer, int32_t nBytesMax) {
+    if (!(iof->flags & (JANET_FILE_READ | JANET_FILE_UPDATE)))
         janet_panic("file is not readable");
     janet_buffer_extra(buffer, nBytesMax);
     size_t ntoread = nBytesMax;
@@ -173,10 +205,19 @@ static void read_chunk(IOFile *iof, JanetBuffer *buffer, int32_t nBytesMax) {
 }
 
 /* Read a certain number of bytes into memory */
-static Janet cfun_io_fread(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_io_fread,
+              "(file/read f what &opt buf)",
+              "Read a number of bytes from a file `f` into a buffer. A buffer `buf` can "
+              "be provided as an optional third argument, otherwise a new buffer "
+              "is created. `what` can either be an integer or a keyword. Returns the "
+              "buffer with file contents. "
+              "Values for `what`:\n\n"
+              "* :all - read the whole file\n\n"
+              "* :line - read up to and including the next newline character\n\n"
+              "* n (integer) - read up to n bytes from the file") {
     janet_arity(argc, 2, 3);
-    IOFile *iof = janet_getabstract(argv, 0, &cfun_io_filetype);
-    if (iof->flags & IO_CLOSED) janet_panic("file is closed");
+    JanetFile *iof = janet_getabstract(argv, 0, &janet_file_type);
+    if (iof->flags & JANET_FILE_CLOSED) janet_panic("file is closed");
     JanetBuffer *buffer;
     if (argc == 2) {
         buffer = janet_buffer(0);
@@ -187,27 +228,11 @@ static Janet cfun_io_fread(int32_t argc, Janet *argv) {
     if (janet_checktype(argv[1], JANET_KEYWORD)) {
         const uint8_t *sym = janet_unwrap_keyword(argv[1]);
         if (!janet_cstrcmp(sym, "all")) {
-            /* Read whole file */
-            int status = fseek(iof->file, 0, SEEK_SET);
-            if (status) {
-                /* backwards fseek did not work (stream like popen) */
-                int32_t sizeBefore;
-                do {
-                    sizeBefore = buffer->count;
-                    read_chunk(iof, buffer, 1024);
-                } while (sizeBefore < buffer->count);
-            } else {
-                fseek(iof->file, 0, SEEK_END);
-                long fsize = ftell(iof->file);
-                if (fsize < 0) {
-                    janet_panicf("could not get file size of %v", argv[0]);
-                }
-                if (fsize > (INT32_MAX)) {
-                    janet_panic("file to large to read into buffer");
-                }
-                fseek(iof->file, 0, SEEK_SET);
-                read_chunk(iof, buffer, (int32_t) fsize);
-            }
+            int32_t sizeBefore;
+            do {
+                sizeBefore = buffer->count;
+                read_chunk(iof, buffer, 4096);
+            } while (sizeBefore < buffer->count);
             /* Never return nil for :all */
             return janet_wrap_buffer(buffer);
         } else if (!janet_cstrcmp(sym, "line")) {
@@ -229,12 +254,15 @@ static Janet cfun_io_fread(int32_t argc, Janet *argv) {
 }
 
 /* Write bytes to a file */
-static Janet cfun_io_fwrite(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_io_fwrite,
+              "(file/write f bytes)",
+              "Writes to a file. 'bytes' must be string, buffer, or symbol. Returns the "
+              "file.") {
     janet_arity(argc, 1, -1);
-    IOFile *iof = janet_getabstract(argv, 0, &cfun_io_filetype);
-    if (iof->flags & IO_CLOSED)
+    JanetFile *iof = janet_getabstract(argv, 0, &janet_file_type);
+    if (iof->flags & JANET_FILE_CLOSED)
         janet_panic("file is closed");
-    if (!(iof->flags & (IO_WRITE | IO_APPEND | IO_UPDATE)))
+    if (!(iof->flags & (JANET_FILE_WRITE | JANET_FILE_APPEND | JANET_FILE_UPDATE)))
         janet_panic("file is not writeable");
     int32_t i;
     /* Verify all arguments before writing to file */
@@ -252,53 +280,97 @@ static Janet cfun_io_fwrite(int32_t argc, Janet *argv) {
 }
 
 /* Flush the bytes in the file */
-static Janet cfun_io_fflush(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_io_fflush,
+              "(file/flush f)",
+              "Flush any buffered bytes to the file system. In most files, writes are "
+              "buffered for efficiency reasons. Returns the file handle.") {
     janet_fixarity(argc, 1);
-    IOFile *iof = janet_getabstract(argv, 0, &cfun_io_filetype);
-    if (iof->flags & IO_CLOSED)
+    JanetFile *iof = janet_getabstract(argv, 0, &janet_file_type);
+    if (iof->flags & JANET_FILE_CLOSED)
         janet_panic("file is closed");
-    if (!(iof->flags & (IO_WRITE | IO_APPEND | IO_UPDATE)))
+    if (!(iof->flags & (JANET_FILE_WRITE | JANET_FILE_APPEND | JANET_FILE_UPDATE)))
         janet_panic("file is not writeable");
     if (fflush(iof->file))
         janet_panic("could not flush file");
     return argv[0];
 }
 
-/* Cleanup a file */
-static int cfun_io_gc(void *p, size_t len) {
-    (void) len;
-    IOFile *iof = (IOFile *)p;
-    if (!(iof->flags & (IO_NOT_CLOSEABLE | IO_CLOSED))) {
-        return fclose(iof->file);
+#ifdef JANET_WINDOWS
+#define pclose _pclose
+#define WEXITSTATUS(x) x
+#endif
+
+/* For closing files from C API */
+int janet_file_close(JanetFile *file) {
+    int ret = 0;
+    if (!(file->flags & (JANET_FILE_NOT_CLOSEABLE | JANET_FILE_CLOSED))) {
+#ifndef JANET_NO_PROCESSES
+        if (file->flags & JANET_FILE_PIPED) {
+            ret = pclose(file->file);
+        } else
+#endif
+        {
+            ret = fclose(file->file);
+        }
+        file->flags |= JANET_FILE_CLOSED;
+        return ret;
     }
     return 0;
 }
 
+/* Cleanup a file */
+static int cfun_io_gc(void *p, size_t len) {
+    (void) len;
+    JanetFile *iof = (JanetFile *)p;
+    janet_file_close(iof);
+    return 0;
+}
+
 /* Close a file */
-static Janet cfun_io_fclose(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_io_fclose,
+              "(file/close f)",
+              "Close a file and release all related resources. When you are "
+              "done reading a file, close it to prevent a resource leak and let "
+              "other processes read the file. If the file is the result of a file/popen "
+              "call, close waits for and returns the process exit status.") {
     janet_fixarity(argc, 1);
-    IOFile *iof = janet_getabstract(argv, 0, &cfun_io_filetype);
-    if (iof->flags & IO_CLOSED)
-        janet_panic("file is closed");
-    if (iof->flags & (IO_NOT_CLOSEABLE))
+    JanetFile *iof = janet_getabstract(argv, 0, &janet_file_type);
+    if (iof->flags & JANET_FILE_CLOSED)
+        return janet_wrap_nil();
+    if (iof->flags & (JANET_FILE_NOT_CLOSEABLE))
         janet_panic("file not closable");
-    if (iof->flags & IO_PIPED) {
-#ifdef JANET_WINDOWS
-#define pclose _pclose
+    if (iof->flags & JANET_FILE_PIPED) {
+#ifndef JANET_NO_PROCESSES
+        int status = pclose(iof->file);
+        iof->flags |= JANET_FILE_CLOSED;
+        if (status == -1) janet_panic("could not close file");
+        return janet_wrap_integer(WEXITSTATUS(status));
+#else
+        return janet_wrap_nil();
 #endif
-        if (pclose(iof->file)) janet_panic("could not close file");
     } else {
-        if (fclose(iof->file)) janet_panic("could not close file");
+        if (fclose(iof->file)) {
+            iof->flags |= JANET_FILE_NOT_CLOSEABLE;
+            janet_panic("could not close file");
+        }
+        iof->flags |= JANET_FILE_CLOSED;
     }
-    iof->flags |= IO_CLOSED;
-    return argv[0];
+    return janet_wrap_nil();
 }
 
 /* Seek a file */
-static Janet cfun_io_fseek(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_io_fseek,
+              "(file/seek f &opt whence n)",
+              "Jump to a relative location in the file `f`. `whence` must be one of:\n\n"
+              "* :cur - jump relative to the current file location\n\n"
+              "* :set - jump relative to the beginning of the file\n\n"
+              "* :end - jump relative to the end of the file\n\n"
+              "By default, `whence` is :cur. Optionally a value `n` may be passed "
+              "for the relative number of bytes to seek in the file. `n` may be a real "
+              "number to handle large files of more than 4GB. Returns the file handle.") {
     janet_arity(argc, 2, 3);
-    IOFile *iof = janet_getabstract(argv, 0, &cfun_io_filetype);
-    if (iof->flags & IO_CLOSED)
+    JanetFile *iof = janet_getabstract(argv, 0, &janet_file_type);
+    if (iof->flags & JANET_FILE_CLOSED)
         janet_panic("file is closed");
     long int offset = 0;
     int whence = SEEK_CUR;
@@ -323,141 +395,432 @@ static Janet cfun_io_fseek(int32_t argc, Janet *argv) {
 
 static JanetMethod io_file_methods[] = {
     {"close", cfun_io_fclose},
-    {"read", cfun_io_fread},
-    {"write", cfun_io_fwrite},
     {"flush", cfun_io_fflush},
+    {"read", cfun_io_fread},
     {"seek", cfun_io_fseek},
+    {"write", cfun_io_fwrite},
     {NULL, NULL}
 };
 
-static Janet io_file_get(void *p, Janet key) {
+static int io_file_get(void *p, Janet key, Janet *out) {
     (void) p;
     if (!janet_checktype(key, JANET_KEYWORD))
-        janet_panicf("expected keyword, got %v", key);
-    return janet_getmethod(janet_unwrap_keyword(key), io_file_methods);
+        return 0;
+    return janet_getmethod(janet_unwrap_keyword(key), io_file_methods, out);
+}
+
+static Janet io_file_next(void *p, Janet key) {
+    (void) p;
+    return janet_nextmethod(io_file_methods, key);
+}
+
+static void io_file_marshal(void *p, JanetMarshalContext *ctx) {
+    JanetFile *iof = (JanetFile *)p;
+    if (ctx->flags & JANET_MARSHAL_UNSAFE) {
+        janet_marshal_abstract(ctx, p);
+#ifdef JANET_WINDOWS
+        janet_marshal_int(ctx, _fileno(iof->file));
+#else
+        janet_marshal_int(ctx, fileno(iof->file));
+#endif
+        janet_marshal_int(ctx, iof->flags);
+    } else {
+        janet_panic("cannot marshal file in safe mode");
+    }
+}
+
+static void *io_file_unmarshal(JanetMarshalContext *ctx) {
+    if (ctx->flags & JANET_MARSHAL_UNSAFE) {
+        JanetFile *iof = janet_unmarshal_abstract(ctx, sizeof(JanetFile));
+        int32_t fd = janet_unmarshal_int(ctx);
+        int32_t flags = janet_unmarshal_int(ctx);
+        char fmt[4] = {0};
+        int index = 0;
+        if (flags & JANET_FILE_READ) fmt[index++] = 'r';
+        if (flags & JANET_FILE_APPEND) {
+            fmt[index++] = 'a';
+        } else if (flags & JANET_FILE_WRITE) {
+            fmt[index++] = 'w';
+        }
+#ifdef JANET_WINDOWS
+        iof->file = _fdopen(fd, fmt);
+#else
+        iof->file = fdopen(fd, fmt);
+#endif
+        if (iof->file == NULL) {
+            iof->flags = JANET_FILE_CLOSED;
+        } else {
+            iof->flags = flags;
+        }
+        return iof;
+    } else {
+        janet_panic("cannot unmarshal file in safe mode");
+    }
 }
 
 FILE *janet_dynfile(const char *name, FILE *def) {
     Janet x = janet_dyn(name);
     if (!janet_checktype(x, JANET_ABSTRACT)) return def;
     void *abstract = janet_unwrap_abstract(x);
-    if (janet_abstract_type(abstract) != &cfun_io_filetype) return def;
-    IOFile *iofile = abstract;
+    if (janet_abstract_type(abstract) != &janet_file_type) return def;
+    JanetFile *iofile = abstract;
     return iofile->file;
 }
 
-static Janet cfun_io_print(int32_t argc, Janet *argv) {
-    FILE *f = janet_dynfile("out", stdout);
-    for (int32_t i = 0; i < argc; ++i) {
-        int32_t j, len;
-        const uint8_t *vstr = janet_to_string(argv[i]);
-        len = janet_string_length(vstr);
-        for (j = 0; j < len; ++j) {
-            putc(vstr[j], f);
+static Janet cfun_io_print_impl_x(int32_t argc, Janet *argv, int newline,
+                                  FILE *dflt_file, int32_t offset, Janet x) {
+    FILE *f;
+    switch (janet_type(x)) {
+        default:
+            janet_panicf("cannot print to %v", x);
+        case JANET_BUFFER: {
+            /* Special case buffer */
+            JanetBuffer *buf = janet_unwrap_buffer(x);
+            for (int32_t i = offset; i < argc; ++i) {
+                janet_to_string_b(buf, argv[i]);
+            }
+            if (newline)
+                janet_buffer_push_u8(buf, '\n');
+            return janet_wrap_nil();
+        }
+        case JANET_FUNCTION: {
+            /* Special case function */
+            JanetFunction *fun = janet_unwrap_function(x);
+            JanetBuffer *buf = janet_buffer(0);
+            for (int32_t i = offset; i < argc; ++i) {
+                janet_to_string_b(buf, argv[i]);
+            }
+            if (newline)
+                janet_buffer_push_u8(buf, '\n');
+            Janet args[1] = { janet_wrap_buffer(buf) };
+            janet_call(fun, 1, args);
+            return janet_wrap_nil();
+        }
+        case JANET_NIL:
+            f = dflt_file;
+            if (f == NULL) janet_panic("cannot print to nil");
+            break;
+        case JANET_ABSTRACT: {
+            void *abstract = janet_unwrap_abstract(x);
+            if (janet_abstract_type(abstract) != &janet_file_type)
+                return janet_wrap_nil();
+            JanetFile *iofile = abstract;
+            f = iofile->file;
+            break;
         }
     }
-    putc('\n', f);
+    for (int32_t i = offset; i < argc; ++i) {
+        int32_t len;
+        const uint8_t *vstr;
+        if (janet_checktype(argv[i], JANET_BUFFER)) {
+            JanetBuffer *b = janet_unwrap_buffer(argv[i]);
+            vstr = b->data;
+            len = b->count;
+        } else {
+            vstr = janet_to_string(argv[i]);
+            len = janet_string_length(vstr);
+        }
+        if (len) {
+            if (1 != fwrite(vstr, len, 1, f)) {
+                if (f == dflt_file) {
+                    janet_panicf("cannot print %d bytes", len);
+                } else {
+                    janet_panicf("cannot print %d bytes to %v", len, x);
+                }
+            }
+        }
+    }
+    if (newline)
+        putc('\n', f);
     return janet_wrap_nil();
 }
 
-static const JanetReg io_cfuns[] = {
-    {
-        "print", cfun_io_print,
-        JDOC("(print & xs)\n\n"
-             "Print values to the console (standard out). Value are converted "
-             "to strings if they are not already. After printing all values, a "
-             "newline character is printed. Returns nil.")
-    },
-    {
-        "file/open", cfun_io_fopen,
-        JDOC("(file/open path [,mode])\n\n"
-             "Open a file. path is an absolute or relative path, and "
-             "mode is a set of flags indicating the mode to open the file in. "
-             "mode is a keyword where each character represents a flag. If the file "
-             "cannot be opened, returns nil, otherwise returns the new file handle. "
-             "Mode flags:\n\n"
-             "\tr - allow reading from the file\n"
-             "\tw - allow writing to the file\n"
-             "\ta - append to the file\n"
-             "\tb - open the file in binary mode (rather than text mode)\n"
-             "\t+ - append to the file instead of overwriting it")
-    },
-    {
-        "file/close", cfun_io_fclose,
-        JDOC("(file/close f)\n\n"
-             "Close a file and release all related resources. When you are "
-             "done reading a file, close it to prevent a resource leak and let "
-             "other processes read the file.")
-    },
-    {
-        "file/read", cfun_io_fread,
-        JDOC("(file/read f what [,buf])\n\n"
-             "Read a number of bytes from a file into a buffer. A buffer can "
-             "be provided as an optional fourth argument, otherwise a new buffer "
-             "is created. 'what' can either be an integer or a keyword. Returns the "
-             "buffer with file contents. "
-             "Values for 'what':\n\n"
-             "\t:all - read the whole file\n"
-             "\t:line - read up to and including the next newline character\n"
-             "\tn (integer) - read up to n bytes from the file")
-    },
-    {
-        "file/write", cfun_io_fwrite,
-        JDOC("(file/write f bytes)\n\n"
-             "Writes to a file. 'bytes' must be string, buffer, or symbol. Returns the "
-             "file.")
-    },
-    {
-        "file/flush", cfun_io_fflush,
-        JDOC("(file/flush f)\n\n"
-             "Flush any buffered bytes to the file system. In most files, writes are "
-             "buffered for efficiency reasons. Returns the file handle.")
-    },
-    {
-        "file/seek", cfun_io_fseek,
-        JDOC("(file/seek f [,whence [,n]])\n\n"
-             "Jump to a relative location in the file. 'whence' must be one of\n\n"
-             "\t:cur - jump relative to the current file location\n"
-             "\t:set - jump relative to the beginning of the file\n"
-             "\t:end - jump relative to the end of the file\n\n"
-             "By default, 'whence' is :cur. Optionally a value n may be passed "
-             "for the relative number of bytes to seek in the file. n may be a real "
-             "number to handle large files of more the 4GB. Returns the file handle.")
-    },
-    {
-        "file/popen", cfun_io_popen,
-        JDOC("(file/popen path [,mode])\n\n"
-             "Open a file that is backed by a process. The file must be opened in either "
-             "the :r (read) or the :w (write) mode. In :r mode, the stdout of the "
-             "process can be read from the file. In :w mode, the stdin of the process "
-             "can be written to. Returns the new file.")
-    },
-    {NULL, NULL, NULL}
-};
+
+static Janet cfun_io_print_impl(int32_t argc, Janet *argv,
+                                int newline, const char *name, FILE *dflt_file) {
+    Janet x = janet_dyn(name);
+    return cfun_io_print_impl_x(argc, argv, newline, dflt_file, 0, x);
+}
+
+JANET_CORE_FN(cfun_io_print,
+              "(print & xs)",
+              "Print values to the console (standard out). Value are converted "
+              "to strings if they are not already. After printing all values, a "
+              "newline character is printed. Use the value of (dyn :out stdout) to determine "
+              "what to push characters to. Expects (dyn :out stdout) to be either a core/file or "
+              "a buffer. Returns nil.") {
+    return cfun_io_print_impl(argc, argv, 1, "out", stdout);
+}
+
+JANET_CORE_FN(cfun_io_prin,
+              "(prin & xs)",
+              "Same as print, but does not add trailing newline.") {
+    return cfun_io_print_impl(argc, argv, 0, "out", stdout);
+}
+
+JANET_CORE_FN(cfun_io_eprint,
+              "(eprint & xs)",
+              "Same as print, but uses (dyn :err stderr) instead of (dyn :out stdout).") {
+    return cfun_io_print_impl(argc, argv, 1, "err", stderr);
+}
+
+JANET_CORE_FN(cfun_io_eprin,
+              "(eprin & xs)",
+              "Same as prin, but uses (dyn :err stderr) instead of (dyn :out stdout).") {
+    return cfun_io_print_impl(argc, argv, 0, "err", stderr);
+}
+
+JANET_CORE_FN(cfun_io_xprint,
+              "(xprint to & xs)",
+              "Print to a file or other value explicitly (no dynamic bindings) with a trailing "
+              "newline character. The value to print "
+              "to is the first argument, and is otherwise the same as print. Returns nil.") {
+    janet_arity(argc, 1, -1);
+    return cfun_io_print_impl_x(argc, argv, 1, NULL, 1, argv[0]);
+}
+
+JANET_CORE_FN(cfun_io_xprin,
+              "(xprin to & xs)",
+              "Print to a file or other value explicitly (no dynamic bindings). The value to print "
+              "to is the first argument, and is otherwise the same as prin. Returns nil.") {
+    janet_arity(argc, 1, -1);
+    return cfun_io_print_impl_x(argc, argv, 0, NULL, 1, argv[0]);
+}
+
+static Janet cfun_io_printf_impl_x(int32_t argc, Janet *argv, int newline,
+                                   FILE *dflt_file, int32_t offset, Janet x) {
+    FILE *f;
+    const char *fmt = janet_getcstring(argv, offset);
+    switch (janet_type(x)) {
+        default:
+            janet_panicf("cannot print to %v", x);
+        case JANET_BUFFER: {
+            /* Special case buffer */
+            JanetBuffer *buf = janet_unwrap_buffer(x);
+            janet_buffer_format(buf, fmt, offset, argc, argv);
+            if (newline) janet_buffer_push_u8(buf, '\n');
+            return janet_wrap_nil();
+        }
+        case JANET_NIL:
+            f = dflt_file;
+            if (f == NULL) janet_panic("cannot print to nil");
+            break;
+        case JANET_ABSTRACT: {
+            void *abstract = janet_unwrap_abstract(x);
+            if (janet_abstract_type(abstract) != &janet_file_type)
+                return janet_wrap_nil();
+            JanetFile *iofile = abstract;
+            f = iofile->file;
+            break;
+        }
+    }
+    JanetBuffer *buf = janet_buffer(10);
+    janet_buffer_format(buf, fmt, offset, argc, argv);
+    if (newline) janet_buffer_push_u8(buf, '\n');
+    if (buf->count) {
+        if (1 != fwrite(buf->data, buf->count, 1, f)) {
+            janet_panicf("could not print %d bytes to file", buf->count);
+        }
+    }
+    /* Clear buffer to make things easier for GC */
+    buf->count = 0;
+    buf->capacity = 0;
+    janet_free(buf->data);
+    buf->data = NULL;
+    return janet_wrap_nil();
+}
+
+static Janet cfun_io_printf_impl(int32_t argc, Janet *argv, int newline,
+                                 const char *name, FILE *dflt_file) {
+    janet_arity(argc, 1, -1);
+    Janet x = janet_dyn(name);
+    return cfun_io_printf_impl_x(argc, argv, newline, dflt_file, 0, x);
+
+}
+
+JANET_CORE_FN(cfun_io_printf,
+              "(printf fmt & xs)",
+              "Prints output formatted as if with (string/format fmt ;xs) to (dyn :out stdout) with a trailing newline.") {
+    return cfun_io_printf_impl(argc, argv, 1, "out", stdout);
+}
+
+JANET_CORE_FN(cfun_io_prinf,
+              "(prinf fmt & xs)",
+              "Like printf but with no trailing newline.") {
+    return cfun_io_printf_impl(argc, argv, 0, "out", stdout);
+}
+
+JANET_CORE_FN(cfun_io_eprintf,
+              "(eprintf fmt & xs)",
+              "Prints output formatted as if with (string/format fmt ;xs) to (dyn :err stderr) with a trailing newline.") {
+    return cfun_io_printf_impl(argc, argv, 1, "err", stderr);
+}
+
+JANET_CORE_FN(cfun_io_eprinf,
+              "(eprinf fmt & xs)",
+              "Like eprintf but with no trailing newline.") {
+    return cfun_io_printf_impl(argc, argv, 0, "err", stderr);
+}
+
+JANET_CORE_FN(cfun_io_xprintf,
+              "(xprintf to fmt & xs)",
+              "Like printf but prints to an explicit file or value to. Returns nil.") {
+    janet_arity(argc, 2, -1);
+    return cfun_io_printf_impl_x(argc, argv, 1, NULL, 1, argv[0]);
+}
+
+JANET_CORE_FN(cfun_io_xprinf,
+              "(xprinf to fmt & xs)",
+              "Like prinf but prints to an explicit file or value to. Returns nil.") {
+    janet_arity(argc, 2, -1);
+    return cfun_io_printf_impl_x(argc, argv, 0, NULL, 1, argv[0]);
+}
+
+static void janet_flusher(const char *name, FILE *dflt_file) {
+    Janet x = janet_dyn(name);
+    switch (janet_type(x)) {
+        default:
+            break;
+        case JANET_NIL:
+            fflush(dflt_file);
+            break;
+        case JANET_ABSTRACT: {
+            void *abstract = janet_unwrap_abstract(x);
+            if (janet_abstract_type(abstract) != &janet_file_type) break;
+            JanetFile *iofile = abstract;
+            fflush(iofile->file);
+            break;
+        }
+    }
+}
+
+JANET_CORE_FN(cfun_io_flush,
+              "(flush)",
+              "Flush (dyn :out stdout) if it is a file, otherwise do nothing.") {
+    janet_fixarity(argc, 0);
+    (void) argv;
+    janet_flusher("out", stdout);
+    return janet_wrap_nil();
+}
+
+JANET_CORE_FN(cfun_io_eflush,
+              "(eflush)",
+              "Flush (dyn :err stderr) if it is a file, otherwise do nothing.") {
+    janet_fixarity(argc, 0);
+    (void) argv;
+    janet_flusher("err", stderr);
+    return janet_wrap_nil();
+}
+
+void janet_dynprintf(const char *name, FILE *dflt_file, const char *format, ...) {
+    va_list args;
+    va_start(args, format);
+    Janet x = janet_dyn(name);
+    JanetType xtype = janet_type(x);
+    switch (xtype) {
+        default:
+            /* Other values simply do nothing */
+            break;
+        case JANET_NIL:
+        case JANET_ABSTRACT: {
+            FILE *f = dflt_file;
+            JanetBuffer buffer;
+            int32_t len = 0;
+            while (format[len]) len++;
+            janet_buffer_init(&buffer, len);
+            janet_formatbv(&buffer, format, args);
+            if (xtype == JANET_ABSTRACT) {
+                void *abstract = janet_unwrap_abstract(x);
+                if (janet_abstract_type(abstract) != &janet_file_type)
+                    break;
+                JanetFile *iofile = abstract;
+                f = iofile->file;
+            }
+            fwrite(buffer.data, buffer.count, 1, f);
+            janet_buffer_deinit(&buffer);
+            break;
+        }
+        case JANET_BUFFER:
+            janet_formatbv(janet_unwrap_buffer(x), format, args);
+            break;
+    }
+    va_end(args);
+    return;
+}
 
 /* C API */
 
+JanetFile *janet_getjfile(const Janet *argv, int32_t n) {
+    return janet_getabstract(argv, n, &janet_file_type);
+}
+
 FILE *janet_getfile(const Janet *argv, int32_t n, int *flags) {
-    IOFile *iof = janet_getabstract(argv, n, &cfun_io_filetype);
+    JanetFile *iof = janet_getabstract(argv, n, &janet_file_type);
+    if (NULL != flags) *flags = iof->flags;
+    return iof->file;
+}
+
+JanetFile *janet_makejfile(FILE *f, int flags) {
+    return makef(f, flags);
+}
+
+Janet janet_makefile(FILE *f, int flags) {
+    return janet_wrap_abstract(makef(f, flags));
+}
+
+JanetAbstract janet_checkfile(Janet j) {
+    return janet_checkabstract(j, &janet_file_type);
+}
+
+FILE *janet_unwrapfile(Janet j, int *flags) {
+    JanetFile *iof = janet_unwrap_abstract(j);
     if (NULL != flags) *flags = iof->flags;
     return iof->file;
 }
 
 /* Module entry point */
 void janet_lib_io(JanetTable *env) {
-    janet_core_cfuns(env, NULL, io_cfuns);
-
+    JanetRegExt io_cfuns[] = {
+        JANET_CORE_REG("print", cfun_io_print),
+        JANET_CORE_REG("prin", cfun_io_prin),
+        JANET_CORE_REG("printf", cfun_io_printf),
+        JANET_CORE_REG("prinf", cfun_io_prinf),
+        JANET_CORE_REG("eprin", cfun_io_eprin),
+        JANET_CORE_REG("eprint", cfun_io_eprint),
+        JANET_CORE_REG("eprintf", cfun_io_eprintf),
+        JANET_CORE_REG("eprinf", cfun_io_eprinf),
+        JANET_CORE_REG("xprint", cfun_io_xprint),
+        JANET_CORE_REG("xprin", cfun_io_xprin),
+        JANET_CORE_REG("xprintf", cfun_io_xprintf),
+        JANET_CORE_REG("xprinf", cfun_io_xprinf),
+        JANET_CORE_REG("flush", cfun_io_flush),
+        JANET_CORE_REG("eflush", cfun_io_eflush),
+        JANET_CORE_REG("file/temp", cfun_io_temp),
+        JANET_CORE_REG("file/open", cfun_io_fopen),
+        JANET_CORE_REG("file/close", cfun_io_fclose),
+        JANET_CORE_REG("file/read", cfun_io_fread),
+        JANET_CORE_REG("file/write", cfun_io_fwrite),
+        JANET_CORE_REG("file/flush", cfun_io_fflush),
+        JANET_CORE_REG("file/seek", cfun_io_fseek),
+#ifndef JANET_NO_PROCESSES
+        JANET_CORE_REG("file/popen", cfun_io_popen),
+#endif
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, io_cfuns);
+    janet_register_abstract_type(&janet_file_type);
+    int default_flags = JANET_FILE_NOT_CLOSEABLE | JANET_FILE_SERIALIZABLE;
     /* stdout */
-    janet_core_def(env, "stdout",
-                   makef(stdout, IO_APPEND | IO_NOT_CLOSEABLE | IO_SERIALIZABLE),
-                   JDOC("The standard output file."));
+    JANET_CORE_DEF(env, "stdout",
+                   janet_makefile(stdout, JANET_FILE_APPEND | default_flags),
+                   "The standard output file.");
     /* stderr */
-    janet_core_def(env, "stderr",
-                   makef(stderr, IO_APPEND | IO_NOT_CLOSEABLE | IO_SERIALIZABLE),
-                   JDOC("The standard error file."));
+    JANET_CORE_DEF(env, "stderr",
+                   janet_makefile(stderr, JANET_FILE_APPEND | default_flags),
+                   "The standard error file.");
     /* stdin */
-    janet_core_def(env, "stdin",
-                   makef(stdin, IO_READ | IO_NOT_CLOSEABLE | IO_SERIALIZABLE),
-                   JDOC("The standard input file."));
+    JANET_CORE_DEF(env, "stdin",
+                   janet_makefile(stdin, JANET_FILE_READ | default_flags),
+                   "The standard input file.");
 
 }

src/core/math.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -20,199 +20,404 @@
 * IN THE SOFTWARE.
 */
 
-#include <math.h>
-
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
+#include "state.h"
 #include "util.h"
 #endif
 
+#include <math.h>
+
+static int janet_rng_get(void *p, Janet key, Janet *out);
+static Janet janet_rng_next(void *p, Janet key);
+
+static void janet_rng_marshal(void *p, JanetMarshalContext *ctx) {
+    JanetRNG *rng = (JanetRNG *)p;
+    janet_marshal_abstract(ctx, p);
+    janet_marshal_int(ctx, (int32_t) rng->a);
+    janet_marshal_int(ctx, (int32_t) rng->b);
+    janet_marshal_int(ctx, (int32_t) rng->c);
+    janet_marshal_int(ctx, (int32_t) rng->d);
+    janet_marshal_int(ctx, (int32_t) rng->counter);
+}
+
+static void *janet_rng_unmarshal(JanetMarshalContext *ctx) {
+    JanetRNG *rng = janet_unmarshal_abstract(ctx, sizeof(JanetRNG));
+    rng->a = (uint32_t) janet_unmarshal_int(ctx);
+    rng->b = (uint32_t) janet_unmarshal_int(ctx);
+    rng->c = (uint32_t) janet_unmarshal_int(ctx);
+    rng->d = (uint32_t) janet_unmarshal_int(ctx);
+    rng->counter = (uint32_t) janet_unmarshal_int(ctx);
+    return rng;
+}
+
+const JanetAbstractType janet_rng_type = {
+    "core/rng",
+    NULL,
+    NULL,
+    janet_rng_get,
+    NULL,
+    janet_rng_marshal,
+    janet_rng_unmarshal,
+    NULL, /* tostring */
+    NULL, /* compare */
+    NULL, /* hash */
+    janet_rng_next,
+    JANET_ATEND_NEXT
+};
+
+JanetRNG *janet_default_rng(void) {
+    return &janet_vm.rng;
+}
+
+void janet_rng_seed(JanetRNG *rng, uint32_t seed) {
+    rng->a = seed;
+    rng->b = 0x97654321u;
+    rng->c = 123871873u;
+    rng->d = 0xf23f56c8u;
+    rng->counter = 0u;
+    /* First several numbers aren't that random. */
+    for (int i = 0; i < 16; i++) janet_rng_u32(rng);
+}
+
+void janet_rng_longseed(JanetRNG *rng, const uint8_t *bytes, int32_t len) {
+    uint8_t state[16] = {0};
+    for (int32_t i = 0; i < len; i++)
+        state[i & 0xF] ^= bytes[i];
+    rng->a = state[0] + (state[1] << 8) + (state[2] << 16) + (state[3] << 24);
+    rng->b = state[4] + (state[5] << 8) + (state[6] << 16) + (state[7] << 24);
+    rng->c = state[8] + (state[9] << 8) + (state[10] << 16) + (state[11] << 24);
+    rng->d = state[12] + (state[13] << 8) + (state[14] << 16) + (state[15] << 24);
+    rng->counter = 0u;
+    /* a, b, c, d can't all be 0 */
+    if (rng->a == 0) rng->a = 1u;
+    for (int i = 0; i < 16; i++) janet_rng_u32(rng);
+}
+
+uint32_t janet_rng_u32(JanetRNG *rng) {
+    /* Algorithm "xorwow" from p. 5 of Marsaglia, "Xorshift RNGs" */
+    uint32_t t = rng->d;
+    uint32_t const s = rng->a;
+    rng->d = rng->c;
+    rng->c = rng->b;
+    rng->b = s;
+    t ^= t >> 2;
+    t ^= t << 1;
+    t ^= s ^ (s << 4);
+    rng->a = t;
+    rng->counter += 362437;
+    return t + rng->counter;
+}
+
+double janet_rng_double(JanetRNG *rng) {
+    uint32_t hi = janet_rng_u32(rng);
+    uint32_t lo = janet_rng_u32(rng);
+    uint64_t big = (uint64_t)(lo) | (((uint64_t) hi) << 32);
+    return ldexp((double)(big >> (64 - 52)), -52);
+}
+
+JANET_CORE_FN(cfun_rng_make,
+              "(math/rng &opt seed)",
+              "Creates a Psuedo-Random number generator, with an optional seed. "
+              "The seed should be an unsigned 32 bit integer or a buffer. "
+              "Do not use this for cryptography. Returns a core/rng abstract type."
+             ) {
+    janet_arity(argc, 0, 1);
+    JanetRNG *rng = janet_abstract(&janet_rng_type, sizeof(JanetRNG));
+    if (argc == 1) {
+        if (janet_checkint(argv[0])) {
+            uint32_t seed = (uint32_t)(janet_getinteger(argv, 0));
+            janet_rng_seed(rng, seed);
+        } else {
+            JanetByteView bytes = janet_getbytes(argv, 0);
+            janet_rng_longseed(rng, bytes.bytes, bytes.len);
+        }
+    } else {
+        janet_rng_seed(rng, 0);
+    }
+    return janet_wrap_abstract(rng);
+}
+
+JANET_CORE_FN(cfun_rng_uniform,
+              "(math/rng-uniform rng)",
+              "Extract a random number in the range [0, 1) from the RNG."
+             ) {
+    janet_fixarity(argc, 1);
+    JanetRNG *rng = janet_getabstract(argv, 0, &janet_rng_type);
+    return janet_wrap_number(janet_rng_double(rng));
+}
+
+JANET_CORE_FN(cfun_rng_int,
+              "(math/rng-int rng &opt max)",
+              "Extract a random random integer in the range [0, max] from the RNG. If "
+              "no max is given, the default is 2^31 - 1."
+             ) {
+    janet_arity(argc, 1, 2);
+    JanetRNG *rng = janet_getabstract(argv, 0, &janet_rng_type);
+    if (argc == 1) {
+        uint32_t word = janet_rng_u32(rng) >> 1;
+        return janet_wrap_integer(word);
+    } else {
+        int32_t max = janet_optnat(argv, argc, 1, INT32_MAX);
+        if (max == 0) return janet_wrap_number(0.0);
+        uint32_t modulo = (uint32_t) max;
+        uint32_t maxgen = INT32_MAX;
+        uint32_t maxword = maxgen - (maxgen % modulo);
+        uint32_t word;
+        do {
+            word = janet_rng_u32(rng) >> 1;
+        } while (word > maxword);
+        return janet_wrap_integer(word % modulo);
+    }
+}
+
+static void rng_get_4bytes(JanetRNG *rng, uint8_t *buf) {
+    uint32_t word = janet_rng_u32(rng);
+    buf[0] = word & 0xFF;
+    buf[1] = (word >> 8) & 0xFF;
+    buf[2] = (word >> 16) & 0xFF;
+    buf[3] = (word >> 24) & 0xFF;
+}
+
+JANET_CORE_FN(cfun_rng_buffer,
+              "(math/rng-buffer rng n &opt buf)",
+              "Get n random bytes and put them in a buffer. Creates a new buffer if no buffer is "
+              "provided, otherwise appends to the given buffer. Returns the buffer."
+             ) {
+    janet_arity(argc, 2, 3);
+    JanetRNG *rng = janet_getabstract(argv, 0, &janet_rng_type);
+    int32_t n = janet_getnat(argv, 1);
+    JanetBuffer *buffer = janet_optbuffer(argv, argc, 2, n);
+
+    /* Split into first part (that is divisible by 4), and rest */
+    int32_t first_part = n & ~3;
+    int32_t second_part = n - first_part;
+
+    /* Get first part in chunks of 4 bytes */
+    janet_buffer_extra(buffer, n);
+    uint8_t *buf = buffer->data + buffer->count;
+    for (int32_t i = 0; i < first_part; i += 4) rng_get_4bytes(rng, buf + i);
+    buffer->count += first_part;
+
+    /* Get remaining 0 - 3 bytes */
+    if (second_part) {
+        uint8_t wordbuf[4] = {0};
+        rng_get_4bytes(rng, wordbuf);
+        janet_buffer_push_bytes(buffer, wordbuf, second_part);
+    }
+
+    return janet_wrap_buffer(buffer);
+}
+
+static const JanetMethod rng_methods[] = {
+    {"uniform", cfun_rng_uniform},
+    {"int", cfun_rng_int},
+    {"buffer", cfun_rng_buffer},
+    {NULL, NULL}
+};
+
+static int janet_rng_get(void *p, Janet key, Janet *out) {
+    (void) p;
+    if (!janet_checktype(key, JANET_KEYWORD)) return 0;
+    return janet_getmethod(janet_unwrap_keyword(key), rng_methods, out);
+}
+
+static Janet janet_rng_next(void *p, Janet key) {
+    (void) p;
+    return janet_nextmethod(rng_methods, key);
+}
+
 /* Get a random number */
-static Janet janet_rand(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_rand,
+              "(math/random)",
+              "Returns a uniformly distributed random number between 0 and 1") {
     (void) argv;
     janet_fixarity(argc, 0);
-    double r = (rand() % RAND_MAX) / ((double) RAND_MAX);
-    return janet_wrap_number(r);
+    return janet_wrap_number(janet_rng_double(&janet_vm.rng));
 }
 
 /* Seed the random number generator */
-static Janet janet_srand(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_srand,
+              "(math/seedrandom seed)",
+              "Set the seed for the random number generator. seed should be "
+              "an integer or a buffer."
+             ) {
     janet_fixarity(argc, 1);
-    int32_t x = janet_getinteger(argv, 0);
-    srand((unsigned) x);
+    if (janet_checkint(argv[0])) {
+        uint32_t seed = (uint32_t)(janet_getinteger(argv, 0));
+        janet_rng_seed(&janet_vm.rng, seed);
+    } else {
+        JanetByteView bytes = janet_getbytes(argv, 0);
+        janet_rng_longseed(&janet_vm.rng, bytes.bytes, bytes.len);
+    }
     return janet_wrap_nil();
 }
 
-static Janet janet_remainder(int32_t argc, Janet *argv) {
-    janet_fixarity(argc, 2);
-    double x = janet_getnumber(argv, 0);
-    double y = janet_getnumber(argv, 1);
-    return janet_wrap_number(fmod(x, y));
-}
-
-#define JANET_DEFINE_MATHOP(name, fop)\
-static Janet janet_##name(int32_t argc, Janet *argv) {\
+#define JANET_DEFINE_MATHOP(name, fop, doc)\
+JANET_CORE_FN(janet_##name, "(math/" #name " x)", doc) {\
     janet_fixarity(argc, 1); \
     double x = janet_getnumber(argv, 0); \
     return janet_wrap_number(fop(x)); \
 }
 
-JANET_DEFINE_MATHOP(acos, acos)
-JANET_DEFINE_MATHOP(asin, asin)
-JANET_DEFINE_MATHOP(atan, atan)
-JANET_DEFINE_MATHOP(cos, cos)
-JANET_DEFINE_MATHOP(cosh, cosh)
-JANET_DEFINE_MATHOP(sin, sin)
-JANET_DEFINE_MATHOP(sinh, sinh)
-JANET_DEFINE_MATHOP(tan, tan)
-JANET_DEFINE_MATHOP(tanh, tanh)
-JANET_DEFINE_MATHOP(exp, exp)
-JANET_DEFINE_MATHOP(log, log)
-JANET_DEFINE_MATHOP(log10, log10)
-JANET_DEFINE_MATHOP(sqrt, sqrt)
-JANET_DEFINE_MATHOP(ceil, ceil)
-JANET_DEFINE_MATHOP(fabs, fabs)
-JANET_DEFINE_MATHOP(floor, floor)
+JANET_DEFINE_MATHOP(acos, acos, "Returns the arccosize of x.")
+JANET_DEFINE_MATHOP(asin, asin, "Returns the arcsin of x.")
+JANET_DEFINE_MATHOP(atan, atan, "Returns the arctangent of x.")
+JANET_DEFINE_MATHOP(cos, cos, "Returns the cosine of x.")
+JANET_DEFINE_MATHOP(cosh, cosh, "Returns the hyperbolic cosine of x.")
+JANET_DEFINE_MATHOP(acosh, acosh, "Returns the hyperbolic arccosine of x.")
+JANET_DEFINE_MATHOP(sin, sin, "Returns the sine of x.")
+JANET_DEFINE_MATHOP(sinh, sinh, "Returns the hyperbolic sine of x.")
+JANET_DEFINE_MATHOP(asinh, asinh, "Returns the hypberbolic arcsine of x.")
+JANET_DEFINE_MATHOP(tan, tan, "Returns the tangent of x.")
+JANET_DEFINE_MATHOP(tanh, tanh, "Returns the hyperbolic tangent of x.")
+JANET_DEFINE_MATHOP(atanh, atanh, "Returns the hyperbolic arctangent of x.")
+JANET_DEFINE_MATHOP(exp, exp, "Returns e to the power of x.")
+JANET_DEFINE_MATHOP(exp2, exp2, "Returns 2 to the power of x.")
+JANET_DEFINE_MATHOP(expm1, expm1, "Returns e to the power of x minus 1.")
+JANET_DEFINE_MATHOP(log, log, "Returns the natural logarithm of x.")
+JANET_DEFINE_MATHOP(log10, log10, "Returns the log base 10 of x.")
+JANET_DEFINE_MATHOP(log2, log2, "Returns the log base 2 of x.")
+JANET_DEFINE_MATHOP(sqrt, sqrt, "Returns the square root of x.")
+JANET_DEFINE_MATHOP(cbrt, cbrt, "Returns the cube root of x.")
+JANET_DEFINE_MATHOP(ceil, ceil, "Returns the smallest integer value number that is not less than x.")
+JANET_DEFINE_MATHOP(fabs, fabs, "Return the absolute value of x.")
+JANET_DEFINE_MATHOP(floor, floor, "Returns the largest integer value number that is not greater than x.")
+JANET_DEFINE_MATHOP(trunc, trunc, "Returns the integer between x and 0 nearest to x.")
+JANET_DEFINE_MATHOP(round, round, "Returns the integer nearest to x.")
+JANET_DEFINE_MATHOP(gamma, tgamma, "Returns gamma(x).")
+JANET_DEFINE_MATHOP(lgamma, lgamma, "Returns log-gamma(x).")
+JANET_DEFINE_MATHOP(log1p, log1p, "Returns (log base e of x) + 1 more accurately than (+ (math/log x) 1)")
+JANET_DEFINE_MATHOP(erf, erf, "Returns the error function of x.")
+JANET_DEFINE_MATHOP(erfc, erfc, "Returns the complementary error function of x.")
 
-#define JANET_DEFINE_MATH2OP(name, fop)\
-static Janet janet_##name(int32_t argc, Janet *argv) {\
+#define JANET_DEFINE_MATH2OP(name, fop, signature, doc)\
+JANET_CORE_FN(janet_##name, signature, doc) {\
     janet_fixarity(argc, 2); \
     double lhs = janet_getnumber(argv, 0); \
     double rhs = janet_getnumber(argv, 1); \
     return janet_wrap_number(fop(lhs, rhs)); \
-}\
+}
 
-JANET_DEFINE_MATH2OP(atan2, atan2)
-JANET_DEFINE_MATH2OP(pow, pow)
+JANET_DEFINE_MATH2OP(atan2, atan2, "(math/atan2 y x)", "Returns the arctangent of y/x. Works even when x is 0.")
+JANET_DEFINE_MATH2OP(pow, pow, "(math/pow a x)", "Returns a to the power of x.")
+JANET_DEFINE_MATH2OP(hypot, hypot, "(math/hypot a b)", "Returns c from the equation c^2 = a^2 + b^2.")
+JANET_DEFINE_MATH2OP(nextafter, nextafter,  "(math/next x y)", "Returns the next representable floating point vaue after x in the direction of y.")
 
-static Janet janet_not(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_not, "(not x)", "Returns the boolean inverse of x.") {
     janet_fixarity(argc, 1);
     return janet_wrap_boolean(!janet_truthy(argv[0]));
 }
 
-static const JanetReg math_cfuns[] = {
-    {
-        "%", janet_remainder,
-        JDOC("(% dividend divisor)\n\n"
-             "Returns the remainder of dividend / divisor.")
-    },
-    {
-        "not", janet_not,
-        JDOC("(not x)\n\nReturns the boolean inverse of x.")
-    },
-    {
-        "math/random", janet_rand,
-        JDOC("(math/random)\n\n"
-             "Returns a uniformly distributed random number between 0 and 1.")
-    },
-    {
-        "math/seedrandom", janet_srand,
-        JDOC("(math/seedrandom seed)\n\n"
-             "Set the seed for the random number generator. 'seed' should be an "
-             "an integer.")
-    },
-    {
-        "math/cos", janet_cos,
-        JDOC("(math/cos x)\n\n"
-             "Returns the cosine of x.")
-    },
-    {
-        "math/sin", janet_sin,
-        JDOC("(math/sin x)\n\n"
-             "Returns the sine of x.")
-    },
-    {
-        "math/tan", janet_tan,
-        JDOC("(math/tan x)\n\n"
-             "Returns the tangent of x.")
-    },
-    {
-        "math/acos", janet_acos,
-        JDOC("(math/acos x)\n\n"
-             "Returns the arccosine of x.")
-    },
-    {
-        "math/asin", janet_asin,
-        JDOC("(math/asin x)\n\n"
-             "Returns the arcsine of x.")
-    },
-    {
-        "math/atan", janet_atan,
-        JDOC("(math/atan x)\n\n"
-             "Returns the arctangent of x.")
-    },
-    {
-        "math/exp", janet_exp,
-        JDOC("(math/exp x)\n\n"
-             "Returns e to the power of x.")
-    },
-    {
-        "math/log", janet_log,
-        JDOC("(math/log x)\n\n"
-             "Returns log base 2 of x.")
-    },
-    {
-        "math/log10", janet_log10,
-        JDOC("(math/log10 x)\n\n"
-             "Returns log base 10 of x.")
-    },
-    {
-        "math/sqrt", janet_sqrt,
-        JDOC("(math/sqrt x)\n\n"
-             "Returns the square root of x.")
-    },
-    {
-        "math/floor", janet_floor,
-        JDOC("(math/floor x)\n\n"
-             "Returns the largest integer value number that is not greater than x.")
-    },
-    {
-        "math/ceil", janet_ceil,
-        JDOC("(math/ceil x)\n\n"
-             "Returns the smallest integer value number that is not less than x.")
-    },
-    {
-        "math/pow", janet_pow,
-        JDOC("(math/pow a x)\n\n"
-             "Return a to the power of x.")
-    },
-    {
-        "math/abs", janet_fabs,
-        JDOC("(math/abs x)\n\n"
-             "Return the absolute value of x.")
-    },
-    {
-        "math/sinh", janet_sinh,
-        JDOC("(math/sinh x)\n\n"
-             "Return the hyperbolic sine of x.")
-    },
-    {
-        "math/cosh", janet_cosh,
-        JDOC("(math/cosh x)\n\n"
-             "Return the hyperbolic cosine of x.")
-    },
-    {
-        "math/tanh", janet_tanh,
-        JDOC("(math/tanh x)\n\n"
-             "Return the hyperbolic tangent of x.")
-    },
-    {
-        "math/atan2", janet_atan2,
-        JDOC("(math/atan2 y x)\n\n"
-             "Return the arctangent of y/x. Works even when x is 0.")
-    },
-    {NULL, NULL, NULL}
-};
+static double janet_gcd(double x, double y) {
+    if (isnan(x) || isnan(y)) {
+#ifdef NAN
+        return NAN;
+#else
+        return 0.0 \ 0.0;
+#endif
+    }
+    if (isinf(x) || isinf(y)) return INFINITY;
+    while (y != 0) {
+        double temp = y;
+        y = fmod(x, y);
+        x = temp;
+    }
+    return x;
+}
+
+static double janet_lcm(double x, double y) {
+    return (x / janet_gcd(x, y)) * y;
+}
+
+JANET_CORE_FN(janet_cfun_gcd, "(math/gcd x y)",
+              "Returns the greatest common divisor between x and y.") {
+    janet_fixarity(argc, 2);
+    double x = janet_getnumber(argv, 0);
+    double y = janet_getnumber(argv, 1);
+    return janet_wrap_number(janet_gcd(x, y));
+}
+
+JANET_CORE_FN(janet_cfun_lcm, "(math/lcm x y)",
+              "Returns the least common multiple of x and y.") {
+    janet_fixarity(argc, 2);
+    double x = janet_getnumber(argv, 0);
+    double y = janet_getnumber(argv, 1);
+    return janet_wrap_number(janet_lcm(x, y));
+}
 
 /* Module entry point */
 void janet_lib_math(JanetTable *env) {
-    janet_core_cfuns(env, NULL, math_cfuns);
+    JanetRegExt math_cfuns[] = {
+        JANET_CORE_REG("not", janet_not),
+        JANET_CORE_REG("math/random", janet_rand),
+        JANET_CORE_REG("math/seedrandom", janet_srand),
+        JANET_CORE_REG("math/cos", janet_cos),
+        JANET_CORE_REG("math/sin", janet_sin),
+        JANET_CORE_REG("math/tan", janet_tan),
+        JANET_CORE_REG("math/acos", janet_acos),
+        JANET_CORE_REG("math/asin", janet_asin),
+        JANET_CORE_REG("math/atan", janet_atan),
+        JANET_CORE_REG("math/exp", janet_exp),
+        JANET_CORE_REG("math/log", janet_log),
+        JANET_CORE_REG("math/log10", janet_log10),
+        JANET_CORE_REG("math/log2", janet_log2),
+        JANET_CORE_REG("math/sqrt", janet_sqrt),
+        JANET_CORE_REG("math/cbrt", janet_cbrt),
+        JANET_CORE_REG("math/floor", janet_floor),
+        JANET_CORE_REG("math/ceil", janet_ceil),
+        JANET_CORE_REG("math/pow", janet_pow),
+        JANET_CORE_REG("math/abs", janet_fabs),
+        JANET_CORE_REG("math/sinh", janet_sinh),
+        JANET_CORE_REG("math/cosh", janet_cosh),
+        JANET_CORE_REG("math/tanh", janet_tanh),
+        JANET_CORE_REG("math/atanh", janet_atanh),
+        JANET_CORE_REG("math/asinh", janet_asinh),
+        JANET_CORE_REG("math/acosh", janet_acosh),
+        JANET_CORE_REG("math/atan2", janet_atan2),
+        JANET_CORE_REG("math/rng", cfun_rng_make),
+        JANET_CORE_REG("math/rng-uniform", cfun_rng_uniform),
+        JANET_CORE_REG("math/rng-int", cfun_rng_int),
+        JANET_CORE_REG("math/rng-buffer", cfun_rng_buffer),
+        JANET_CORE_REG("math/hypot", janet_hypot),
+        JANET_CORE_REG("math/exp2", janet_exp2),
+        JANET_CORE_REG("math/log1p", janet_log1p),
+        JANET_CORE_REG("math/gamma", janet_gamma),
+        JANET_CORE_REG("math/log-gamma", janet_lgamma),
+        JANET_CORE_REG("math/erfc", janet_erfc),
+        JANET_CORE_REG("math/erf", janet_erf),
+        JANET_CORE_REG("math/expm1", janet_expm1),
+        JANET_CORE_REG("math/trunc", janet_trunc),
+        JANET_CORE_REG("math/round", janet_round),
+        JANET_CORE_REG("math/next", janet_nextafter),
+        JANET_CORE_REG("math/gcd", janet_cfun_gcd),
+        JANET_CORE_REG("math/lcm", janet_cfun_lcm),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, math_cfuns);
+    janet_register_abstract_type(&janet_rng_type);
 #ifdef JANET_BOOTSTRAP
-    janet_def(env, "math/pi", janet_wrap_number(3.1415926535897931),
-              JDOC("The value pi."));
-    janet_def(env, "math/e", janet_wrap_number(2.7182818284590451),
-              JDOC("The base of the natural log."));
-    janet_def(env, "math/inf", janet_wrap_number(INFINITY),
-              JDOC("The number representing positive infinity"));
+    JANET_CORE_DEF(env, "math/pi", janet_wrap_number(3.1415926535897931),
+                   "The value pi.");
+    JANET_CORE_DEF(env, "math/e", janet_wrap_number(2.7182818284590451),
+                   "The base of the natural log.");
+    JANET_CORE_DEF(env, "math/inf", janet_wrap_number(INFINITY),
+                   "The number representing positive infinity");
+    JANET_CORE_DEF(env, "math/-inf", janet_wrap_number(-INFINITY),
+                   "The number representing negative infinity");
+    JANET_CORE_DEF(env, "math/int32-min", janet_wrap_number(INT32_MIN),
+                   "The minimum contiguous integer representable by a 32 bit signed integer");
+    JANET_CORE_DEF(env, "math/int32-max", janet_wrap_number(INT32_MAX),
+                   "The maximum contiguous integer represtenable by a 32 bit signed integer");
+    JANET_CORE_DEF(env, "math/int-min", janet_wrap_number(JANET_INTMIN_DOUBLE),
+                   "The minimum contiguous integer representable by a double (2^53)");
+    JANET_CORE_DEF(env, "math/int-max", janet_wrap_number(JANET_INTMAX_DOUBLE),
+                   "The maximum contiguous integer represtenable by a double (-(2^53))");
+#ifdef NAN
+    JANET_CORE_DEF(env, "math/nan", janet_wrap_number(NAN), "Not a number (IEEE-754 NaN)");
+#else
+    JANET_CORE_DEF(env, "math/nan", janet_wrap_number(0.0 / 0.0), "Not a number (IEEE-754 NaN)");
+#endif
 #endif
 }

src/core/net.c

@@ -0,0 +1,923 @@
+/*
+* Copyright (c) 2022 Calvin Rose and contributors.
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to
+* deal in the Software without restriction, including without limitation the
+* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+* sell copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+* IN THE SOFTWARE.
+*/
+
+#ifndef JANET_AMALG
+#include "features.h"
+#include <janet.h>
+#include "util.h"
+#endif
+
+#ifdef JANET_NET
+
+#include <math.h>
+#ifdef JANET_WINDOWS
+#include <winsock2.h>
+#include <windows.h>
+#include <ws2tcpip.h>
+#include <mswsock.h>
+#pragma comment (lib, "Ws2_32.lib")
+#pragma comment (lib, "Mswsock.lib")
+#pragma comment (lib, "Advapi32.lib")
+#else
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <netdb.h>
+#include <fcntl.h>
+#endif
+
+const JanetAbstractType janet_address_type = {
+    "core/socket-address",
+    JANET_ATEND_NAME
+};
+
+#ifdef JANET_WINDOWS
+#define JSOCKCLOSE(x) closesocket((SOCKET) x)
+#define JSOCKDEFAULT INVALID_SOCKET
+#define JSOCKVALID(x) ((x) != INVALID_SOCKET)
+#define JSock SOCKET
+#define JSOCKFLAGS 0
+#else
+#define JSOCKCLOSE(x) close(x)
+#define JSOCKDEFAULT 0
+#define JSOCKVALID(x) ((x) >= 0)
+#define JSock int
+#ifdef SOCK_CLOEXEC
+#define JSOCKFLAGS SOCK_CLOEXEC
+#else
+#define JSOCKFLAGS 0
+#endif
+#endif
+
+/* maximum number of bytes in a socket address host (post name resolution) */
+#ifdef JANET_WINDOWS
+#define SA_ADDRSTRLEN (INET6_ADDRSTRLEN + 1)
+typedef unsigned short in_port_t;
+#else
+#define JANET_SA_MAX(a, b) (((a) > (b))? (a) : (b))
+#define SA_ADDRSTRLEN JANET_SA_MAX(INET6_ADDRSTRLEN + 1, (sizeof ((struct sockaddr_un *)0)->sun_path) + 1)
+#endif
+
+static JanetStream *make_stream(JSock handle, uint32_t flags);
+
+/* We pass this flag to all send calls to prevent sigpipe */
+#ifndef MSG_NOSIGNAL
+#define MSG_NOSIGNAL 0
+#endif
+
+/* Make sure a socket doesn't block */
+static void janet_net_socknoblock(JSock s) {
+#ifdef JANET_WINDOWS
+    unsigned long arg = 1;
+    ioctlsocket(s, FIONBIO, &arg);
+#else
+#if !defined(SOCK_CLOEXEC) && defined(O_CLOEXEC)
+    int extra = O_CLOEXEC;
+#else
+    int extra = 0;
+#endif
+    fcntl(s, F_SETFL, fcntl(s, F_GETFL, 0) | O_NONBLOCK | extra);
+#ifdef SO_NOSIGPIPE
+    int enable = 1;
+    setsockopt(s, SOL_SOCKET, SO_NOSIGPIPE, &enable, sizeof(int));
+#endif
+#endif
+}
+
+/* State machine for accepting connections. */
+
+#ifdef JANET_WINDOWS
+
+typedef struct {
+    JanetListenerState head;
+    WSAOVERLAPPED overlapped;
+    JanetFunction *function;
+    JanetStream *lstream;
+    JanetStream *astream;
+    char buf[1024];
+} NetStateAccept;
+
+static int net_sched_accept_impl(NetStateAccept *state, Janet *err);
+
+JanetAsyncStatus net_machine_accept(JanetListenerState *s, JanetAsyncEvent event) {
+    NetStateAccept *state = (NetStateAccept *)s;
+    switch (event) {
+        default:
+            break;
+        case JANET_ASYNC_EVENT_MARK: {
+            if (state->lstream) janet_mark(janet_wrap_abstract(state->lstream));
+            if (state->astream) janet_mark(janet_wrap_abstract(state->astream));
+            if (state->function) janet_mark(janet_wrap_function(state->function));
+            break;
+        }
+        case JANET_ASYNC_EVENT_CLOSE:
+            janet_schedule(s->fiber, janet_wrap_nil());
+            return JANET_ASYNC_STATUS_DONE;
+        case JANET_ASYNC_EVENT_COMPLETE: {
+            if (state->astream->flags & JANET_STREAM_CLOSED) {
+                janet_cancel(s->fiber, janet_cstringv("failed to accept connection"));
+                return JANET_ASYNC_STATUS_DONE;
+            }
+            SOCKET lsock = (SOCKET) state->lstream->handle;
+            if (NO_ERROR != setsockopt((SOCKET) state->astream->handle, SOL_SOCKET, SO_UPDATE_ACCEPT_CONTEXT,
+                                       (char *) &lsock, sizeof(lsock))) {
+                janet_cancel(s->fiber, janet_cstringv("failed to accept connection"));
+                return JANET_ASYNC_STATUS_DONE;
+            }
+
+            Janet streamv = janet_wrap_abstract(state->astream);
+            if (state->function) {
+                /* Schedule worker */
+                JanetFiber *fiber = janet_fiber(state->function, 64, 1, &streamv);
+                fiber->supervisor_channel = s->fiber->supervisor_channel;
+                janet_schedule(fiber, janet_wrap_nil());
+                /* Now listen again for next connection */
+                Janet err;
+                if (net_sched_accept_impl(state, &err)) {
+                    janet_cancel(s->fiber, err);
+                    return JANET_ASYNC_STATUS_DONE;
+                }
+            } else {
+                janet_schedule(s->fiber, streamv);
+                return JANET_ASYNC_STATUS_DONE;
+            }
+        }
+    }
+    return JANET_ASYNC_STATUS_NOT_DONE;
+}
+
+JANET_NO_RETURN static void janet_sched_accept(JanetStream *stream, JanetFunction *fun) {
+    Janet err;
+    SOCKET lsock = (SOCKET) stream->handle;
+    JanetListenerState *s = janet_listen(stream, net_machine_accept, JANET_ASYNC_LISTEN_READ, sizeof(NetStateAccept), NULL);
+    NetStateAccept *state = (NetStateAccept *)s;
+    memset(&state->overlapped, 0, sizeof(WSAOVERLAPPED));
+    memset(&state->buf, 0, 1024);
+    state->function = fun;
+    state->lstream = stream;
+    s->tag = &state->overlapped;
+    if (net_sched_accept_impl(state, &err)) janet_panicv(err);
+    janet_await();
+}
+
+static int net_sched_accept_impl(NetStateAccept *state, Janet *err) {
+    SOCKET lsock = (SOCKET) state->lstream->handle;
+    SOCKET asock = WSASocketW(AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0, WSA_FLAG_OVERLAPPED);
+    if (asock == INVALID_SOCKET) {
+        *err = janet_ev_lasterr();
+        return 1;
+    }
+    JanetStream *astream = make_stream(asock, JANET_STREAM_READABLE | JANET_STREAM_WRITABLE);
+    state->astream = astream;
+    int socksize = sizeof(SOCKADDR_STORAGE) + 16;
+    if (FALSE == AcceptEx(lsock, asock, state->buf, 0, socksize, socksize, NULL, &state->overlapped)) {
+        int code = WSAGetLastError();
+        if (code == WSA_IO_PENDING) return 0; /* indicates io is happening async */
+        *err = janet_ev_lasterr();
+        return 1;
+    }
+    return 0;
+}
+
+#else
+
+typedef struct {
+    JanetListenerState head;
+    JanetFunction *function;
+} NetStateAccept;
+
+JanetAsyncStatus net_machine_accept(JanetListenerState *s, JanetAsyncEvent event) {
+    NetStateAccept *state = (NetStateAccept *)s;
+    switch (event) {
+        default:
+            break;
+        case JANET_ASYNC_EVENT_MARK: {
+            if (state->function) janet_mark(janet_wrap_function(state->function));
+            break;
+        }
+        case JANET_ASYNC_EVENT_CLOSE:
+            janet_schedule(s->fiber, janet_wrap_nil());
+            return JANET_ASYNC_STATUS_DONE;
+        case JANET_ASYNC_EVENT_READ: {
+            JSock connfd = accept(s->stream->handle, NULL, NULL);
+            if (JSOCKVALID(connfd)) {
+                janet_net_socknoblock(connfd);
+                JanetStream *stream = make_stream(connfd, JANET_STREAM_READABLE | JANET_STREAM_WRITABLE);
+                Janet streamv = janet_wrap_abstract(stream);
+                if (state->function) {
+                    JanetFiber *fiber = janet_fiber(state->function, 64, 1, &streamv);
+                    fiber->supervisor_channel = s->fiber->supervisor_channel;
+                    janet_schedule(fiber, janet_wrap_nil());
+                } else {
+                    janet_schedule(s->fiber, streamv);
+                    return JANET_ASYNC_STATUS_DONE;
+                }
+            }
+            break;
+        }
+    }
+    return JANET_ASYNC_STATUS_NOT_DONE;
+}
+
+JANET_NO_RETURN static void janet_sched_accept(JanetStream *stream, JanetFunction *fun) {
+    NetStateAccept *state = (NetStateAccept *) janet_listen(stream, net_machine_accept, JANET_ASYNC_LISTEN_READ, sizeof(NetStateAccept), NULL);
+    state->function = fun;
+    janet_await();
+}
+
+
+#endif
+
+/* Adress info */
+
+static int janet_get_sockettype(Janet *argv, int32_t argc, int32_t n) {
+    JanetKeyword stype = janet_optkeyword(argv, argc, n, NULL);
+    int socktype = SOCK_DGRAM;
+    if ((NULL == stype) || !janet_cstrcmp(stype, "stream")) {
+        socktype = SOCK_STREAM;
+    } else if (janet_cstrcmp(stype, "datagram")) {
+        janet_panicf("expected socket type as :stream or :datagram, got %v", argv[n]);
+    }
+    return socktype;
+}
+
+/* Needs argc >= offset + 2 */
+/* For unix paths, just rertuns a single sockaddr and sets *is_unix to 1,
+ * otherwise 0. Also, ignores is_bind when is a unix socket. */
+static struct addrinfo *janet_get_addrinfo(Janet *argv, int32_t offset, int socktype, int passive, int *is_unix) {
+    /* Unix socket support - not yet supported on windows. */
+#ifndef JANET_WINDOWS
+    if (janet_keyeq(argv[offset], "unix")) {
+        const char *path = janet_getcstring(argv, offset + 1);
+        struct sockaddr_un *saddr = janet_calloc(1, sizeof(struct sockaddr_un));
+        if (saddr == NULL) {
+            JANET_OUT_OF_MEMORY;
+        }
+        saddr->sun_family = AF_UNIX;
+        size_t path_size = sizeof(saddr->sun_path);
+#ifdef JANET_LINUX
+        if (path[0] == '@') {
+            saddr->sun_path[0] = '\0';
+            snprintf(saddr->sun_path + 1, path_size - 1, "%s", path + 1);
+        } else
+#endif
+        {
+            snprintf(saddr->sun_path, path_size, "%s", path);
+        }
+        *is_unix = 1;
+        return (struct addrinfo *) saddr;
+    }
+#endif
+    /* Get host and port */
+    char *host = (char *)janet_getcstring(argv, offset);
+    char *port = NULL;
+    if (janet_checkint(argv[offset + 1])) {
+        port = (char *)janet_to_string(argv[offset + 1]);
+    } else {
+        port = (char *)janet_optcstring(argv, offset + 2, offset + 1, NULL);
+    }
+    /* getaddrinfo */
+    struct addrinfo *ai = NULL;
+    struct addrinfo hints;
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_family = AF_UNSPEC;
+    hints.ai_socktype = socktype;
+    hints.ai_flags = passive ? AI_PASSIVE : 0;
+    int status = getaddrinfo(host, port, &hints, &ai);
+    if (status) {
+        janet_panicf("could not get address info: %s", gai_strerror(status));
+    }
+    *is_unix = 0;
+    return ai;
+}
+
+/*
+ * C Funs
+ */
+
+JANET_CORE_FN(cfun_net_sockaddr,
+              "(net/address host port &opt type multi)",
+              "Look up the connection information for a given hostname, port, and connection type. Returns "
+              "a handle that can be used to send datagrams over network without establishing a connection. "
+              "On Posix platforms, you can use :unix for host to connect to a unix domain socket, where the name is "
+              "given in the port argument. On Linux, abstract "
+              "unix domain sockets are specified with a leading '@' character in port. If `multi` is truthy, will "
+              "return all address that match in an array instead of just the first.") {
+    janet_arity(argc, 2, 4);
+    int socktype = janet_get_sockettype(argv, argc, 2);
+    int is_unix = 0;
+    int make_arr = (argc >= 3 && janet_truthy(argv[3]));
+    struct addrinfo *ai = janet_get_addrinfo(argv, 0, socktype, 0, &is_unix);
+#ifndef JANET_WINDOWS
+    /* no unix domain socket support on windows yet */
+    if (is_unix) {
+        void *abst = janet_abstract(&janet_address_type, sizeof(struct sockaddr_un));
+        memcpy(abst, ai, sizeof(struct sockaddr_un));
+        Janet ret = janet_wrap_abstract(abst);
+        return make_arr ? janet_wrap_array(janet_array_n(&ret, 1)) : ret;
+    }
+#endif
+    if (make_arr) {
+        /* Select all */
+        JanetArray *arr = janet_array(10);
+        struct addrinfo *iter = ai;
+        while (NULL != iter) {
+            void *abst = janet_abstract(&janet_address_type, iter->ai_addrlen);
+            memcpy(abst, iter->ai_addr, iter->ai_addrlen);
+            janet_array_push(arr, janet_wrap_abstract(abst));
+            iter = iter->ai_next;
+        }
+        freeaddrinfo(ai);
+        return janet_wrap_array(arr);
+    } else {
+        /* Select first */
+        if (NULL == ai) {
+            janet_panic("no data for given address");
+        }
+        void *abst = janet_abstract(&janet_address_type, ai->ai_addrlen);
+        memcpy(abst, ai->ai_addr, ai->ai_addrlen);
+        freeaddrinfo(ai);
+        return janet_wrap_abstract(abst);
+    }
+}
+
+JANET_CORE_FN(cfun_net_connect,
+              "(net/connect host port &opt type bindhost bindport)",
+              "Open a connection to communicate with a server. Returns a duplex stream "
+              "that can be used to communicate with the server. Type is an optional keyword "
+              "to specify a connection type, either :stream or :datagram. The default is :stream. "
+              "Bindhost is an optional string to select from what address to make the outgoing "
+              "connection, with the default being the same as using the OS's preferred address. ") {
+    janet_arity(argc, 2, 5);
+
+    /* Check arguments */
+    int socktype = janet_get_sockettype(argv, argc, 2);
+    int is_unix = 0;
+    char *bindhost = (char *) janet_optcstring(argv, argc, 3, NULL);
+    char *bindport = NULL;
+    if (argc >= 5 && janet_checkint(argv[4])) {
+        bindport = (char *)janet_to_string(argv[4]);
+    } else {
+        bindport = (char *)janet_optcstring(argv, argc, 4, NULL);
+    }
+
+    /* Where we're connecting to */
+    struct addrinfo *ai = janet_get_addrinfo(argv, 0, socktype, 0, &is_unix);
+
+    /* Check if we're binding address */
+    struct addrinfo *binding = NULL;
+    if (bindhost != NULL) {
+        if (is_unix) {
+            freeaddrinfo(ai);
+            janet_panic("bindhost not supported for unix domain sockets");
+        }
+        /* getaddrinfo */
+        struct addrinfo hints;
+        memset(&hints, 0, sizeof(hints));
+        hints.ai_family = AF_UNSPEC;
+        hints.ai_socktype = socktype;
+        hints.ai_flags = 0;
+        int status = getaddrinfo(bindhost, bindport, &hints, &binding);
+        if (status) {
+            freeaddrinfo(ai);
+            janet_panicf("could not get address info for bindhost: %s", gai_strerror(status));
+        }
+    }
+
+
+    /* Create socket */
+    JSock sock = JSOCKDEFAULT;
+    void *addr = NULL;
+    socklen_t addrlen = 0;
+#ifndef JANET_WINDOWS
+    if (is_unix) {
+        sock = socket(AF_UNIX, socktype | JSOCKFLAGS, 0);
+        if (!JSOCKVALID(sock)) {
+            Janet v = janet_ev_lasterr();
+            janet_free(ai);
+            janet_panicf("could not create socket: %V", v);
+        }
+        addr = (void *) ai;
+        addrlen = sizeof(struct sockaddr_un);
+    } else
+#endif
+    {
+        struct addrinfo *rp = NULL;
+        for (rp = ai; rp != NULL; rp = rp->ai_next) {
+#ifdef JANET_WINDOWS
+            sock = WSASocketW(rp->ai_family, rp->ai_socktype, rp->ai_protocol, NULL, 0, WSA_FLAG_OVERLAPPED);
+#else
+            sock = socket(rp->ai_family, rp->ai_socktype | JSOCKFLAGS, rp->ai_protocol);
+#endif
+            if (JSOCKVALID(sock)) {
+                addr = rp->ai_addr;
+                addrlen = (socklen_t) rp->ai_addrlen;
+                break;
+            }
+        }
+        if (NULL == addr) {
+            Janet v = janet_ev_lasterr();
+            if (binding) freeaddrinfo(binding);
+            freeaddrinfo(ai);
+            janet_panicf("could not create socket: %V", v);
+        }
+    }
+
+    /* Bind to bindhost and bindport if given */
+    if (binding) {
+        struct addrinfo *rp = NULL;
+        int did_bind = 0;
+        for (rp = ai; rp != NULL; rp = rp->ai_next) {
+            if (bind(sock, rp->ai_addr, (int) rp->ai_addrlen) == 0) {
+                did_bind = 1;
+                break;
+            }
+        }
+        if (!did_bind) {
+            Janet v = janet_ev_lasterr();
+            freeaddrinfo(binding);
+            freeaddrinfo(ai);
+            JSOCKCLOSE(sock);
+            janet_panicf("could not bind outgoing address: %V", v);
+        } else {
+            freeaddrinfo(binding);
+        }
+    }
+
+    /* Connect to socket */
+#ifdef JANET_WINDOWS
+    int status = WSAConnect(sock, addr, addrlen, NULL, NULL, NULL, NULL);
+    Janet lasterr = janet_ev_lasterr();
+    freeaddrinfo(ai);
+#else
+    int status = connect(sock, addr, addrlen);
+    Janet lasterr = janet_ev_lasterr();
+    if (is_unix) {
+        janet_free(ai);
+    } else {
+        freeaddrinfo(ai);
+    }
+#endif
+
+    if (status == -1) {
+        JSOCKCLOSE(sock);
+        janet_panicf("could not connect socket: %V", lasterr);
+    }
+
+    /* Set up the socket for non-blocking IO after connect - TODO - non-blocking connect? */
+    janet_net_socknoblock(sock);
+
+    /* Wrap socket in abstract type JanetStream */
+    JanetStream *stream = make_stream(sock, JANET_STREAM_READABLE | JANET_STREAM_WRITABLE);
+    return janet_wrap_abstract(stream);
+}
+
+static const char *serverify_socket(JSock sfd) {
+    /* Set various socket options */
+    int enable = 1;
+    if (setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR, (char *) &enable, sizeof(int)) < 0) {
+        return "setsockopt(SO_REUSEADDR) failed";
+    }
+#ifdef SO_REUSEPORT
+    if (setsockopt(sfd, SOL_SOCKET, SO_REUSEPORT, &enable, sizeof(int)) < 0) {
+        return "setsockopt(SO_REUSEPORT) failed";
+    }
+#endif
+    janet_net_socknoblock(sfd);
+    return NULL;
+}
+
+#ifdef JANET_WINDOWS
+#define JANET_SHUTDOWN_RW SD_BOTH
+#define JANET_SHUTDOWN_R SD_RECEIVE
+#define JANET_SHUTDOWN_W SD_SEND
+#else
+#define JANET_SHUTDOWN_RW SHUT_RDWR
+#define JANET_SHUTDOWN_R SHUT_RD
+#define JANET_SHUTDOWN_W SHUT_WR
+#endif
+
+JANET_CORE_FN(cfun_net_shutdown,
+              "(net/shutdown stream &opt mode)",
+              "Stop communication on this socket in a graceful manner, either in both directions or just "
+              "reading/writing from the stream. The `mode` parameter controls which communication to stop on the socket. "
+              "\n\n* `:wr` is the default and prevents both reading new data from the socket and writing new data to the socket.\n"
+              "* `:r` disables reading new data from the socket.\n"
+              "* `:w` disable writing data to the socket.\n\n"
+              "Returns the original socket.") {
+    janet_arity(argc, 1, 2);
+    JanetStream *stream = janet_getabstract(argv, 0, &janet_stream_type);
+    janet_stream_flags(stream, JANET_STREAM_SOCKET);
+    int shutdown_type = JANET_SHUTDOWN_RW;
+    if (argc == 2) {
+        const uint8_t *kw = janet_getkeyword(argv, 1);
+        if (0 == janet_cstrcmp(kw, "rw")) {
+            shutdown_type = JANET_SHUTDOWN_RW;
+        } else if (0 == janet_cstrcmp(kw, "r")) {
+            shutdown_type = JANET_SHUTDOWN_R;
+        } else if (0 == janet_cstrcmp(kw, "w")) {
+            shutdown_type = JANET_SHUTDOWN_W;
+        } else {
+            janet_panicf("unexpected keyword %v", argv[1]);
+        }
+    }
+    int status;
+#ifdef JANET_WINDOWS
+    status = shutdown((SOCKET) stream->handle, shutdown_type);
+#else
+    do {
+        status = shutdown(stream->handle, shutdown_type);
+    } while (status == -1 && errno == EINTR);
+#endif
+    if (status) {
+        janet_panicf("could not shutdown socket: %V", janet_ev_lasterr());
+    }
+    return argv[0];
+}
+
+JANET_CORE_FN(cfun_net_listen,
+              "(net/listen host port &opt type)",
+              "Creates a server. Returns a new stream that is neither readable nor "
+              "writeable. Use net/accept or net/accept-loop be to handle connections and start the server. "
+              "The type parameter specifies the type of network connection, either "
+              "a :stream (usually tcp), or :datagram (usually udp). If not specified, the default is "
+              ":stream. The host and port arguments are the same as in net/address.") {
+    janet_arity(argc, 2, 3);
+
+    /* Get host, port, and handler*/
+    int socktype = janet_get_sockettype(argv, argc, 2);
+    int is_unix = 0;
+    struct addrinfo *ai = janet_get_addrinfo(argv, 0, socktype, 1, &is_unix);
+
+    JSock sfd = JSOCKDEFAULT;
+#ifndef JANET_WINDOWS
+    if (is_unix) {
+        sfd = socket(AF_UNIX, socktype | JSOCKFLAGS, 0);
+        if (!JSOCKVALID(sfd)) {
+            janet_free(ai);
+            janet_panicf("could not create socket: %V", janet_ev_lasterr());
+        }
+        const char *err = serverify_socket(sfd);
+        if (NULL != err || bind(sfd, (struct sockaddr *)ai, sizeof(struct sockaddr_un))) {
+            JSOCKCLOSE(sfd);
+            janet_free(ai);
+            if (err) {
+                janet_panic(err);
+            } else {
+                janet_panicf("could not bind socket: %V", janet_ev_lasterr());
+            }
+        }
+        janet_free(ai);
+    } else
+#endif
+    {
+        /* Check all addrinfos in a loop for the first that we can bind to. */
+        struct addrinfo *rp = NULL;
+        for (rp = ai; rp != NULL; rp = rp->ai_next) {
+#ifdef JANET_WINDOWS
+            sfd = WSASocketW(rp->ai_family, rp->ai_socktype | JSOCKFLAGS, rp->ai_protocol, NULL, 0, WSA_FLAG_OVERLAPPED);
+#else
+            sfd = socket(rp->ai_family, rp->ai_socktype | JSOCKFLAGS, rp->ai_protocol);
+#endif
+            if (!JSOCKVALID(sfd)) continue;
+            const char *err = serverify_socket(sfd);
+            if (NULL != err) {
+                JSOCKCLOSE(sfd);
+                continue;
+            }
+            /* Bind */
+            if (bind(sfd, rp->ai_addr, (int) rp->ai_addrlen) == 0) break;
+            JSOCKCLOSE(sfd);
+        }
+        freeaddrinfo(ai);
+        if (NULL == rp) {
+            janet_panic("could not bind to any sockets");
+        }
+    }
+
+    if (socktype == SOCK_DGRAM) {
+        /* Datagram server (UDP) */
+        JanetStream *stream = make_stream(sfd, JANET_STREAM_UDPSERVER | JANET_STREAM_READABLE);
+        return janet_wrap_abstract(stream);
+    } else {
+        /* Stream server (TCP) */
+
+        /* listen */
+        int status = listen(sfd, 1024);
+        if (status) {
+            JSOCKCLOSE(sfd);
+            janet_panicf("could not listen on file descriptor: %V", janet_ev_lasterr());
+        }
+
+        /* Put sfd on our loop */
+        JanetStream *stream = make_stream(sfd, JANET_STREAM_ACCEPTABLE);
+        return janet_wrap_abstract(stream);
+    }
+}
+
+/* Types of socket's we need to deal with - relevant type puns below.
+struct sockaddr *sa;           // Common base structure
+struct sockaddr_storage *ss;   // Size of largest socket address type
+struct sockaddr_in *sin;       // IPv4 address + port
+struct sockaddr_in6 *sin6;     // IPv6 address + port
+struct sockaddr_un *sun;       // Unix Domain Socket Address
+*/
+
+/* Turn a socket address into a host, port pair.
+ * For unix domain sockets, returned tuple will have only a single element, the path string. */
+static Janet janet_so_getname(const void *sa_any) {
+    const struct sockaddr *sa = sa_any;
+    char buffer[SA_ADDRSTRLEN];
+    switch (sa->sa_family) {
+        default:
+            janet_panic("unknown address family");
+        case AF_INET: {
+            const struct sockaddr_in *sai = sa_any;
+            if (!inet_ntop(AF_INET, &(sai->sin_addr), buffer, sizeof(buffer))) {
+                janet_panic("unable to decode ipv4 host address");
+            }
+            Janet pair[2] = {janet_cstringv(buffer), janet_wrap_integer(ntohs(sai->sin_port))};
+            return janet_wrap_tuple(janet_tuple_n(pair, 2));
+        }
+        case AF_INET6: {
+            const struct sockaddr_in6 *sai6 = sa_any;
+            if (!inet_ntop(AF_INET6, &(sai6->sin6_addr), buffer, sizeof(buffer))) {
+                janet_panic("unable to decode ipv4 host address");
+            }
+            Janet pair[2] = {janet_cstringv(buffer), janet_wrap_integer(ntohs(sai6->sin6_port))};
+            return janet_wrap_tuple(janet_tuple_n(pair, 2));
+        }
+#ifndef JANET_WINDOWS
+        case AF_UNIX: {
+            const struct sockaddr_un *sun = sa_any;
+            Janet pathname;
+            if (sun->sun_path[0] == '\0') {
+                memcpy(buffer, sun->sun_path, sizeof(sun->sun_path));
+                buffer[0] = '@';
+                pathname = janet_cstringv(buffer);
+            } else {
+                pathname = janet_cstringv(sun->sun_path);
+            }
+            return janet_wrap_tuple(janet_tuple_n(&pathname, 1));
+        }
+#endif
+    }
+}
+
+JANET_CORE_FN(cfun_net_getsockname,
+              "(net/localname stream)",
+              "Gets the local address and port in a tuple in that order.") {
+    janet_fixarity(argc, 1);
+    JanetStream *js = janet_getabstract(argv, 0, &janet_stream_type);
+    if (js->flags & JANET_STREAM_CLOSED) janet_panic("stream closed");
+    struct sockaddr_storage ss;
+    socklen_t slen = sizeof(ss);
+    memset(&ss, 0, slen);
+    if (getsockname((JSock)js->handle, (struct sockaddr *) &ss, &slen)) {
+        janet_panicf("Failed to get localname on %v: %V", argv[0], janet_ev_lasterr());
+    }
+    janet_assert(slen <= sizeof(ss), "socket address truncated");
+    return janet_so_getname(&ss);
+}
+
+JANET_CORE_FN(cfun_net_getpeername,
+              "(net/peername stream)",
+              "Gets the remote peer's address and port in a tuple in that order.") {
+    janet_fixarity(argc, 1);
+    JanetStream *js = janet_getabstract(argv, 0, &janet_stream_type);
+    if (js->flags & JANET_STREAM_CLOSED) janet_panic("stream closed");
+    struct sockaddr_storage ss;
+    socklen_t slen = sizeof(ss);
+    memset(&ss, 0, slen);
+    if (getpeername((JSock)js->handle, (struct sockaddr *)&ss, &slen)) {
+        janet_panicf("Failed to get peername on %v: %V", argv[0], janet_ev_lasterr());
+    }
+    janet_assert(slen <= sizeof(ss), "socket address truncated");
+    return janet_so_getname(&ss);
+}
+
+JANET_CORE_FN(cfun_net_address_unpack,
+              "(net/address-unpack address)",
+              "Given an address returned by net/adress, return a host, port pair. Unix domain sockets "
+              "will have only the path in the returned tuple.") {
+    janet_fixarity(argc, 1);
+    struct sockaddr *sa = janet_getabstract(argv, 0, &janet_address_type);
+    return janet_so_getname(sa);
+}
+
+JANET_CORE_FN(cfun_stream_accept_loop,
+              "(net/accept-loop stream handler)",
+              "Shorthand for running a server stream that will continuously accept new connections. "
+              "Blocks the current fiber until the stream is closed, and will return the stream.") {
+    janet_fixarity(argc, 2);
+    JanetStream *stream = janet_getabstract(argv, 0, &janet_stream_type);
+    janet_stream_flags(stream, JANET_STREAM_ACCEPTABLE | JANET_STREAM_SOCKET);
+    JanetFunction *fun = janet_getfunction(argv, 1);
+    janet_sched_accept(stream, fun);
+}
+
+JANET_CORE_FN(cfun_stream_accept,
+              "(net/accept stream &opt timeout)",
+              "Get the next connection on a server stream. This would usually be called in a loop in a dedicated fiber. "
+              "Takes an optional timeout in seconds, after which will return nil. "
+              "Returns a new duplex stream which represents a connection to the client.") {
+    janet_arity(argc, 1, 2);
+    JanetStream *stream = janet_getabstract(argv, 0, &janet_stream_type);
+    janet_stream_flags(stream, JANET_STREAM_ACCEPTABLE | JANET_STREAM_SOCKET);
+    double to = janet_optnumber(argv, argc, 1, INFINITY);
+    if (to != INFINITY) janet_addtimeout(to);
+    janet_sched_accept(stream, NULL);
+}
+
+JANET_CORE_FN(cfun_stream_read,
+              "(net/read stream nbytes &opt buf timeout)",
+              "Read up to n bytes from a stream, suspending the current fiber until the bytes are available. "
+              "`n` can also be the keyword `:all` to read into the buffer until end of stream. "
+              "If less than n bytes are available (and more than 0), will push those bytes and return early. "
+              "Takes an optional timeout in seconds, after which will return nil. "
+              "Returns a buffer with up to n more bytes in it, or raises an error if the read failed.") {
+    janet_arity(argc, 2, 4);
+    JanetStream *stream = janet_getabstract(argv, 0, &janet_stream_type);
+    janet_stream_flags(stream, JANET_STREAM_READABLE | JANET_STREAM_SOCKET);
+    JanetBuffer *buffer = janet_optbuffer(argv, argc, 2, 10);
+    double to = janet_optnumber(argv, argc, 3, INFINITY);
+    if (janet_keyeq(argv[1], "all")) {
+        if (to != INFINITY) janet_addtimeout(to);
+        janet_ev_recvchunk(stream, buffer, INT32_MAX, MSG_NOSIGNAL);
+    } else {
+        int32_t n = janet_getnat(argv, 1);
+        if (to != INFINITY) janet_addtimeout(to);
+        janet_ev_recv(stream, buffer, n, MSG_NOSIGNAL);
+    }
+    janet_await();
+}
+
+JANET_CORE_FN(cfun_stream_chunk,
+              "(net/chunk stream nbytes &opt buf timeout)",
+              "Same a net/read, but will wait for all n bytes to arrive rather than return early. "
+              "Takes an optional timeout in seconds, after which will return nil.") {
+    janet_arity(argc, 2, 4);
+    JanetStream *stream = janet_getabstract(argv, 0, &janet_stream_type);
+    janet_stream_flags(stream, JANET_STREAM_READABLE | JANET_STREAM_SOCKET);
+    int32_t n = janet_getnat(argv, 1);
+    JanetBuffer *buffer = janet_optbuffer(argv, argc, 2, 10);
+    double to = janet_optnumber(argv, argc, 3, INFINITY);
+    if (to != INFINITY) janet_addtimeout(to);
+    janet_ev_recvchunk(stream, buffer, n, MSG_NOSIGNAL);
+    janet_await();
+}
+
+JANET_CORE_FN(cfun_stream_recv_from,
+              "(net/recv-from stream nbytes buf &opt timoeut)",
+              "Receives data from a server stream and puts it into a buffer. Returns the socket-address the "
+              "packet came from. Takes an optional timeout in seconds, after which will return nil.") {
+    janet_arity(argc, 3, 4);
+    JanetStream *stream = janet_getabstract(argv, 0, &janet_stream_type);
+    janet_stream_flags(stream, JANET_STREAM_UDPSERVER | JANET_STREAM_SOCKET);
+    int32_t n = janet_getnat(argv, 1);
+    JanetBuffer *buffer = janet_getbuffer(argv, 2);
+    double to = janet_optnumber(argv, argc, 3, INFINITY);
+    if (to != INFINITY) janet_addtimeout(to);
+    janet_ev_recvfrom(stream, buffer, n, MSG_NOSIGNAL);
+    janet_await();
+}
+
+JANET_CORE_FN(cfun_stream_write,
+              "(net/write stream data &opt timeout)",
+              "Write data to a stream, suspending the current fiber until the write "
+              "completes. Takes an optional timeout in seconds, after which will return nil. "
+              "Returns nil, or raises an error if the write failed.") {
+    janet_arity(argc, 2, 3);
+    JanetStream *stream = janet_getabstract(argv, 0, &janet_stream_type);
+    janet_stream_flags(stream, JANET_STREAM_WRITABLE | JANET_STREAM_SOCKET);
+    double to = janet_optnumber(argv, argc, 2, INFINITY);
+    if (janet_checktype(argv[1], JANET_BUFFER)) {
+        if (to != INFINITY) janet_addtimeout(to);
+        janet_ev_send_buffer(stream, janet_getbuffer(argv, 1), MSG_NOSIGNAL);
+    } else {
+        JanetByteView bytes = janet_getbytes(argv, 1);
+        if (to != INFINITY) janet_addtimeout(to);
+        janet_ev_send_string(stream, bytes.bytes, MSG_NOSIGNAL);
+    }
+    janet_await();
+}
+
+JANET_CORE_FN(cfun_stream_send_to,
+              "(net/send-to stream dest data &opt timeout)",
+              "Writes a datagram to a server stream. dest is a the destination address of the packet. "
+              "Takes an optional timeout in seconds, after which will return nil. "
+              "Returns stream.") {
+    janet_arity(argc, 3, 4);
+    JanetStream *stream = janet_getabstract(argv, 0, &janet_stream_type);
+    janet_stream_flags(stream, JANET_STREAM_UDPSERVER | JANET_STREAM_SOCKET);
+    void *dest = janet_getabstract(argv, 1, &janet_address_type);
+    double to = janet_optnumber(argv, argc, 3, INFINITY);
+    if (janet_checktype(argv[2], JANET_BUFFER)) {
+        if (to != INFINITY) janet_addtimeout(to);
+        janet_ev_sendto_buffer(stream, janet_getbuffer(argv, 2), dest, MSG_NOSIGNAL);
+    } else {
+        JanetByteView bytes = janet_getbytes(argv, 2);
+        if (to != INFINITY) janet_addtimeout(to);
+        janet_ev_sendto_string(stream, bytes.bytes, dest, MSG_NOSIGNAL);
+    }
+    janet_await();
+}
+
+JANET_CORE_FN(cfun_stream_flush,
+              "(net/flush stream)",
+              "Make sure that a stream is not buffering any data. This temporarily disables Nagle's algorithm. "
+              "Use this to make sure data is sent without delay. Returns stream.") {
+    janet_fixarity(argc, 1);
+    JanetStream *stream = janet_getabstract(argv, 0, &janet_stream_type);
+    janet_stream_flags(stream, JANET_STREAM_WRITABLE | JANET_STREAM_SOCKET);
+    /* Toggle no delay flag */
+    int flag = 1;
+    setsockopt((JSock) stream->handle, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int));
+    flag = 0;
+    setsockopt((JSock) stream->handle, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int));
+    return argv[0];
+}
+
+static const JanetMethod net_stream_methods[] = {
+    {"chunk", cfun_stream_chunk},
+    {"close", janet_cfun_stream_close},
+    {"read", cfun_stream_read},
+    {"write", cfun_stream_write},
+    {"flush", cfun_stream_flush},
+    {"accept", cfun_stream_accept},
+    {"accept-loop", cfun_stream_accept_loop},
+    {"send-to", cfun_stream_send_to},
+    {"recv-from", cfun_stream_recv_from},
+    {"evread", janet_cfun_stream_read},
+    {"evchunk", janet_cfun_stream_chunk},
+    {"evwrite", janet_cfun_stream_write},
+    {"shutdown", cfun_net_shutdown},
+    {NULL, NULL}
+};
+
+static JanetStream *make_stream(JSock handle, uint32_t flags) {
+    return janet_stream((JanetHandle) handle, flags | JANET_STREAM_SOCKET, net_stream_methods);
+}
+
+
+void janet_lib_net(JanetTable *env) {
+    JanetRegExt net_cfuns[] = {
+        JANET_CORE_REG("net/address", cfun_net_sockaddr),
+        JANET_CORE_REG("net/listen", cfun_net_listen),
+        JANET_CORE_REG("net/accept", cfun_stream_accept),
+        JANET_CORE_REG("net/accept-loop", cfun_stream_accept_loop),
+        JANET_CORE_REG("net/read", cfun_stream_read),
+        JANET_CORE_REG("net/chunk", cfun_stream_chunk),
+        JANET_CORE_REG("net/write", cfun_stream_write),
+        JANET_CORE_REG("net/send-to", cfun_stream_send_to),
+        JANET_CORE_REG("net/recv-from", cfun_stream_recv_from),
+        JANET_CORE_REG("net/flush", cfun_stream_flush),
+        JANET_CORE_REG("net/connect", cfun_net_connect),
+        JANET_CORE_REG("net/shutdown", cfun_net_shutdown),
+        JANET_CORE_REG("net/peername", cfun_net_getpeername),
+        JANET_CORE_REG("net/localname", cfun_net_getsockname),
+        JANET_CORE_REG("net/address-unpack", cfun_net_address_unpack),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, net_cfuns);
+}
+
+void janet_net_init(void) {
+#ifdef JANET_WINDOWS
+    WSADATA wsaData;
+    janet_assert(!WSAStartup(MAKEWORD(2, 2), &wsaData), "could not start winsock");
+#endif
+}
+
+void janet_net_deinit(void) {
+#ifdef JANET_WINDOWS
+    WSACleanup();
+#endif
+}
+
+#endif

src/core/pp.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -20,24 +20,36 @@
 * IN THE SOFTWARE.
 */
 
-#include <string.h>
-#include <ctype.h>
-
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "util.h"
 #include "state.h"
+#include <math.h>
 #endif
 
+#include <string.h>
+#include <ctype.h>
+
 /* Implements a pretty printer for Janet. The pretty printer
- * is farily simple and not that flexible, but fast. */
+ * is simple and not that flexible, but fast. */
 
 /* Temporary buffer size */
 #define BUFSIZE 64
 
 static void number_to_string_b(JanetBuffer *buffer, double x) {
     janet_buffer_ensure(buffer, buffer->count + BUFSIZE, 2);
-    int count = snprintf((char *) buffer->data + buffer->count, BUFSIZE, "%g", x);
+    const char *fmt = (x == floor(x) &&
+                       x <= JANET_INTMAX_DOUBLE &&
+                       x >= JANET_INTMIN_DOUBLE) ? "%.0f" : "%g";
+    int count;
+    if (x == 0.0) {
+        /* Prevent printing of '-0' */
+        count = 1;
+        buffer->data[buffer->count] = '0';
+    } else {
+        count = snprintf((char *) buffer->data + buffer->count, BUFSIZE, fmt, x);
+    }
     buffer->count += count;
 }
 
@@ -116,9 +128,6 @@ static void string_description_b(JanetBuffer *buffer, const char *title, void *p
 #undef POINTSIZE
 }
 
-#undef HEX
-#undef BUFSIZE
-
 static void janet_escape_string_impl(JanetBuffer *buffer, const uint8_t *str, int32_t len) {
     janet_buffer_push_u8(buffer, '"');
     for (int32_t i = 0; i < len; ++i) {
@@ -148,8 +157,11 @@ static void janet_escape_string_impl(JanetBuffer *buffer, const uint8_t *str, in
             case '\\':
                 janet_buffer_push_bytes(buffer, (const uint8_t *)"\\\\", 2);
                 break;
+            case '\t':
+                janet_buffer_push_bytes(buffer, (const uint8_t *)"\\t", 2);
+                break;
             default:
-                if (c < 32 || c > 127) {
+                if (c < 32 || c > 126) {
                     uint8_t buf[4];
                     buf[0] = '\\';
                     buf[1] = 'x';
@@ -170,60 +182,59 @@ static void janet_escape_string_b(JanetBuffer *buffer, const uint8_t *str) {
 }
 
 static void janet_escape_buffer_b(JanetBuffer *buffer, JanetBuffer *bx) {
+    if (bx == buffer) {
+        /* Ensures buffer won't resize while escaping */
+        janet_buffer_ensure(bx, bx->count + 5 * bx->count + 3, 1);
+    }
     janet_buffer_push_u8(buffer, '@');
     janet_escape_string_impl(buffer, bx->data, bx->count);
 }
 
-void janet_description_b(JanetBuffer *buffer, Janet x) {
+void janet_to_string_b(JanetBuffer *buffer, Janet x) {
     switch (janet_type(x)) {
         case JANET_NIL:
-            janet_buffer_push_cstring(buffer, "nil");
-            return;
+            janet_buffer_push_cstring(buffer, "");
+            break;
         case JANET_BOOLEAN:
             janet_buffer_push_cstring(buffer,
                                       janet_unwrap_boolean(x) ? "true" : "false");
-            return;
+            break;
         case JANET_NUMBER:
             number_to_string_b(buffer, janet_unwrap_number(x));
-            return;
-        case JANET_KEYWORD:
-            janet_buffer_push_u8(buffer, ':');
-        /* fallthrough */
+            break;
+        case JANET_STRING:
         case JANET_SYMBOL:
+        case JANET_KEYWORD:
             janet_buffer_push_bytes(buffer,
                                     janet_unwrap_string(x),
                                     janet_string_length(janet_unwrap_string(x)));
-            return;
-        case JANET_STRING:
-            janet_escape_string_b(buffer, janet_unwrap_string(x));
-            return;
+            break;
         case JANET_BUFFER: {
-            JanetBuffer *b = janet_unwrap_buffer(x);
-            if (b == buffer) {
-                /* Ensures buffer won't resize while escaping */
-                janet_buffer_ensure(b, 5 * b->count + 3, 1);
-            }
-            janet_escape_buffer_b(buffer, b);
-            return;
+            JanetBuffer *to = janet_unwrap_buffer(x);
+            /* Prevent resizing buffer while appending */
+            if (buffer == to) janet_buffer_extra(buffer, to->count);
+            janet_buffer_push_bytes(buffer, to->data, to->count);
+            break;
         }
         case JANET_ABSTRACT: {
-            void *p = janet_unwrap_abstract(x);
-            const JanetAbstractType *at = janet_abstract_type(p);
-            if (at->tostring) {
-                at->tostring(p, buffer);
+            JanetAbstract p = janet_unwrap_abstract(x);
+            const JanetAbstractType *t = janet_abstract_type(p);
+            if (t->tostring != NULL) {
+                t->tostring(p, buffer);
             } else {
-                const char *n = at->name;
-                string_description_b(buffer, n, janet_unwrap_abstract(x));
+                string_description_b(buffer, t->name, p);
             }
-            return;
         }
+        return;
         case JANET_CFUNCTION: {
-            Janet check = janet_table_get(janet_vm_registry, x);
-            if (janet_checktype(check, JANET_SYMBOL)) {
+            JanetCFunRegistry *reg = janet_registry_get(janet_unwrap_cfunction(x));
+            if (NULL != reg) {
                 janet_buffer_push_cstring(buffer, "<cfunction ");
-                janet_buffer_push_bytes(buffer,
-                                        janet_unwrap_symbol(check),
-                                        janet_string_length(janet_unwrap_symbol(check)));
+                if (NULL != reg->name_prefix) {
+                    janet_buffer_push_cstring(buffer, reg->name_prefix);
+                    janet_buffer_push_u8(buffer, '/');
+                }
+                janet_buffer_push_cstring(buffer, reg->name);
                 janet_buffer_push_u8(buffer, '>');
                 break;
             }
@@ -248,24 +259,53 @@ void janet_description_b(JanetBuffer *buffer, Janet x) {
     }
 }
 
-void janet_to_string_b(JanetBuffer *buffer, Janet x) {
+/* See parse.c for full table */
+
+/* Check if a symbol or keyword contains no symbol characters */
+static int contains_bad_chars(const uint8_t *sym, int issym) {
+    int32_t len = janet_string_length(sym);
+    if (len && issym && sym[0] >= '0' && sym[0] <= '9') return 1;
+    if (!janet_valid_utf8(sym, len)) return 1;
+    for (int32_t i = 0; i < len; i++) {
+        if (!janet_is_symbol_char(sym[i])) return 1;
+    }
+    return 0;
+}
+
+void janet_description_b(JanetBuffer *buffer, Janet x) {
     switch (janet_type(x)) {
         default:
-            janet_description_b(buffer, x);
             break;
-        case JANET_BUFFER:
-            janet_buffer_push_bytes(buffer,
-                                    janet_unwrap_buffer(x)->data,
-                                    janet_unwrap_buffer(x)->count);
+        case JANET_NIL:
+            janet_buffer_push_cstring(buffer, "nil");
+            return;
+        case JANET_KEYWORD:
+            janet_buffer_push_u8(buffer, ':');
             break;
         case JANET_STRING:
-        case JANET_SYMBOL:
-        case JANET_KEYWORD:
-            janet_buffer_push_bytes(buffer,
-                                    janet_unwrap_string(x),
-                                    janet_string_length(janet_unwrap_string(x)));
-            break;
+            janet_escape_string_b(buffer, janet_unwrap_string(x));
+            return;
+        case JANET_BUFFER: {
+            JanetBuffer *b = janet_unwrap_buffer(x);
+            janet_escape_buffer_b(buffer, b);
+            return;
+        }
+        case JANET_ABSTRACT: {
+            JanetAbstract p = janet_unwrap_abstract(x);
+            const JanetAbstractType *t = janet_abstract_type(p);
+            if (t->tostring != NULL) {
+                janet_buffer_push_cstring(buffer, "<");
+                janet_buffer_push_cstring(buffer, t->name);
+                janet_buffer_push_cstring(buffer, " ");
+                t->tostring(p, buffer);
+                janet_buffer_push_cstring(buffer, ">");
+            } else {
+                string_description_b(buffer, t->name, p);
+            }
+            return;
+        }
     }
+    janet_to_string_b(buffer, x);
 }
 
 const uint8_t *janet_description(Janet x) {
@@ -305,12 +345,96 @@ struct pretty {
     int indent;
     int flags;
     int32_t bufstartlen;
+    int32_t *keysort_buffer;
+    int32_t keysort_capacity;
+    int32_t keysort_start;
     JanetTable seen;
 };
 
+/* Print jdn format */
+static int print_jdn_one(struct pretty *S, Janet x, int depth) {
+    if (depth == 0) return 1;
+    switch (janet_type(x)) {
+        case JANET_NIL:
+        case JANET_BOOLEAN:
+        case JANET_BUFFER:
+        case JANET_STRING:
+            janet_description_b(S->buffer, x);
+            break;
+        case JANET_NUMBER:
+            janet_buffer_ensure(S->buffer, S->buffer->count + BUFSIZE, 2);
+            int count = snprintf((char *) S->buffer->data + S->buffer->count, BUFSIZE, "%.17g", janet_unwrap_number(x));
+            S->buffer->count += count;
+            break;
+        case JANET_SYMBOL:
+        case JANET_KEYWORD:
+            if (contains_bad_chars(janet_unwrap_keyword(x), janet_type(x) == JANET_SYMBOL)) return 1;
+            janet_description_b(S->buffer, x);
+            break;
+        case JANET_TUPLE: {
+            JanetTuple t = janet_unwrap_tuple(x);
+            int isb = janet_tuple_flag(t) & JANET_TUPLE_FLAG_BRACKETCTOR;
+            janet_buffer_push_u8(S->buffer, isb ? '[' : '(');
+            for (int32_t i = 0; i < janet_tuple_length(t); i++) {
+                if (i) janet_buffer_push_u8(S->buffer, ' ');
+                if (print_jdn_one(S, t[i], depth - 1)) return 1;
+            }
+            janet_buffer_push_u8(S->buffer, isb ? ']' : ')');
+        }
+        break;
+        case JANET_ARRAY: {
+            janet_table_put(&S->seen, x, janet_wrap_true());
+            JanetArray *a = janet_unwrap_array(x);
+            janet_buffer_push_cstring(S->buffer, "@[");
+            for (int32_t i = 0; i < a->count; i++) {
+                if (i) janet_buffer_push_u8(S->buffer, ' ');
+                if (print_jdn_one(S, a->data[i], depth - 1)) return 1;
+            }
+            janet_buffer_push_u8(S->buffer, ']');
+        }
+        break;
+        case JANET_TABLE: {
+            janet_table_put(&S->seen, x, janet_wrap_true());
+            JanetTable *tab = janet_unwrap_table(x);
+            janet_buffer_push_cstring(S->buffer, "@{");
+            int isFirst = 1;
+            for (int32_t i = 0; i < tab->capacity; i++) {
+                const JanetKV *kv = tab->data + i;
+                if (janet_checktype(kv->key, JANET_NIL)) continue;
+                if (!isFirst) janet_buffer_push_u8(S->buffer, ' ');
+                isFirst = 0;
+                if (print_jdn_one(S, kv->key, depth - 1)) return 1;
+                janet_buffer_push_u8(S->buffer, ' ');
+                if (print_jdn_one(S, kv->value, depth - 1)) return 1;
+            }
+            janet_buffer_push_u8(S->buffer, '}');
+        }
+        break;
+        case JANET_STRUCT: {
+            JanetStruct st = janet_unwrap_struct(x);
+            janet_buffer_push_u8(S->buffer, '{');
+            int isFirst = 1;
+            for (int32_t i = 0; i < janet_struct_capacity(st); i++) {
+                const JanetKV *kv = st + i;
+                if (janet_checktype(kv->key, JANET_NIL)) continue;
+                if (!isFirst) janet_buffer_push_u8(S->buffer, ' ');
+                isFirst = 0;
+                if (print_jdn_one(S, kv->key, depth - 1)) return 1;
+                janet_buffer_push_u8(S->buffer, ' ');
+                if (print_jdn_one(S, kv->value, depth - 1)) return 1;
+            }
+            janet_buffer_push_u8(S->buffer, '}');
+        }
+        break;
+        default:
+            return 1;
+    }
+    return 0;
+}
+
 static void print_newline(struct pretty *S, int just_a_space) {
     int i;
-    if (just_a_space) {
+    if (just_a_space || (S->flags & JANET_PRETTY_ONELINE)) {
         janet_buffer_push_u8(S->buffer, ' ');
         return;
     }
@@ -322,6 +446,7 @@ static void print_newline(struct pretty *S, int just_a_space) {
 
 /* Color coding for types */
 static const char janet_cycle_color[] = "\x1B[36m";
+static const char janet_class_color[] = "\x1B[34m";
 static const char *janet_pretty_colors[] = {
     "\x1B[32m",
     "\x1B[36m",
@@ -333,7 +458,7 @@ static const char *janet_pretty_colors[] = {
     "\x1B[36m",
     "\x1B[36m",
     "\x1B[36m",
-    "\x1B[36m"
+    "\x1B[36m",
     "\x1B[35m",
     "\x1B[36m",
     "\x1B[36m",
@@ -343,6 +468,8 @@ static const char *janet_pretty_colors[] = {
 
 #define JANET_PRETTY_DICT_ONELINE 4
 #define JANET_PRETTY_IND_ONELINE 10
+#define JANET_PRETTY_DICT_LIMIT 30
+#define JANET_PRETTY_ARRAY_LIMIT 160
 
 /* Helper for pretty printing */
 static void janet_pretty_one(struct pretty *S, Janet x, int is_dict_value) {
@@ -406,12 +533,25 @@ static void janet_pretty_one(struct pretty *S, Janet x, int is_dict_value) {
             if (S->depth == 0) {
                 janet_buffer_push_cstring(S->buffer, "...");
             } else {
-                if (!isarray && len >= JANET_PRETTY_IND_ONELINE)
+                if (!isarray && !(S->flags & JANET_PRETTY_ONELINE) && len >= JANET_PRETTY_IND_ONELINE)
                     janet_buffer_push_u8(S->buffer, ' ');
                 if (is_dict_value && len >= JANET_PRETTY_IND_ONELINE) print_newline(S, 0);
-                for (i = 0; i < len; i++) {
-                    if (i) print_newline(S, len < JANET_PRETTY_IND_ONELINE);
-                    janet_pretty_one(S, arr[i], 0);
+                if (len > JANET_PRETTY_ARRAY_LIMIT && !(S->flags & JANET_PRETTY_NOTRUNC)) {
+                    for (i = 0; i < 3; i++) {
+                        if (i) print_newline(S, 0);
+                        janet_pretty_one(S, arr[i], 0);
+                    }
+                    print_newline(S, 0);
+                    janet_buffer_push_cstring(S->buffer, "...");
+                    for (i = 0; i < 3; i++) {
+                        print_newline(S, 0);
+                        janet_pretty_one(S, arr[len - 3 + i], 0);
+                    }
+                } else {
+                    for (i = 0; i < len; i++) {
+                        if (i) print_newline(S, len < JANET_PRETTY_IND_ONELINE);
+                        janet_pretty_one(S, arr[i], 0);
+                    }
                 }
             }
             S->indent -= 2;
@@ -422,21 +562,45 @@ static void janet_pretty_one(struct pretty *S, Janet x, int is_dict_value) {
         case JANET_STRUCT:
         case JANET_TABLE: {
             int istable = janet_checktype(x, JANET_TABLE);
-            janet_buffer_push_cstring(S->buffer, istable ? "@" : "{");
 
             /* For object-like tables, print class name */
             if (istable) {
                 JanetTable *t = janet_unwrap_table(x);
                 JanetTable *proto = t->proto;
+                janet_buffer_push_cstring(S->buffer, "@");
                 if (NULL != proto) {
-                    Janet name = janet_table_get(proto, janet_csymbolv(":name"));
-                    if (janet_checktype(name, JANET_SYMBOL)) {
-                        const uint8_t *sym = janet_unwrap_symbol(name);
-                        janet_buffer_push_bytes(S->buffer, sym, janet_string_length(sym));
+                    Janet name = janet_table_get(proto, janet_ckeywordv("_name"));
+                    const uint8_t *n;
+                    int32_t len;
+                    if (janet_bytes_view(name, &n, &len)) {
+                        if (S->flags & JANET_PRETTY_COLOR) {
+                            janet_buffer_push_cstring(S->buffer, janet_class_color);
+                        }
+                        janet_buffer_push_bytes(S->buffer, n, len);
+                        if (S->flags & JANET_PRETTY_COLOR) {
+                            janet_buffer_push_cstring(S->buffer, "\x1B[0m");
+                        }
+                    }
+                }
+            } else {
+                JanetStruct st = janet_unwrap_struct(x);
+                JanetStruct proto = janet_struct_proto(st);
+                if (NULL != proto) {
+                    Janet name = janet_struct_get(proto, janet_ckeywordv("_name"));
+                    const uint8_t *n;
+                    int32_t len;
+                    if (janet_bytes_view(name, &n, &len)) {
+                        if (S->flags & JANET_PRETTY_COLOR) {
+                            janet_buffer_push_cstring(S->buffer, janet_class_color);
+                        }
+                        janet_buffer_push_bytes(S->buffer, n, len);
+                        if (S->flags & JANET_PRETTY_COLOR) {
+                            janet_buffer_push_cstring(S->buffer, "\x1B[0m");
+                        }
                     }
                 }
-                janet_buffer_push_cstring(S->buffer, "{");
             }
+            janet_buffer_push_cstring(S->buffer, "{");
 
             S->depth--;
             S->indent += 2;
@@ -444,24 +608,55 @@ static void janet_pretty_one(struct pretty *S, Janet x, int is_dict_value) {
                 janet_buffer_push_cstring(S->buffer, "...");
             } else {
                 int32_t i = 0, len = 0, cap = 0;
-                int first_kv_pair = 1;
                 const JanetKV *kvs = NULL;
                 janet_dictionary_view(x, &kvs, &len, &cap);
-                if (!istable && len >= JANET_PRETTY_DICT_ONELINE)
+                if (!istable && !(S->flags & JANET_PRETTY_ONELINE) && len >= JANET_PRETTY_DICT_ONELINE)
                     janet_buffer_push_u8(S->buffer, ' ');
                 if (is_dict_value && len >= JANET_PRETTY_DICT_ONELINE) print_newline(S, 0);
-                for (i = 0; i < cap; i++) {
-                    if (!janet_checktype(kvs[i].key, JANET_NIL)) {
-                        if (first_kv_pair) {
-                            first_kv_pair = 0;
-                        } else {
-                            print_newline(S, len < JANET_PRETTY_DICT_ONELINE);
-                        }
-                        janet_pretty_one(S, kvs[i].key, 0);
-                        janet_buffer_push_u8(S->buffer, ' ');
-                        janet_pretty_one(S, kvs[i].value, 1);
+                int32_t ks_start = S->keysort_start;
+
+                /* Ensure buffer is large enough to sort keys. */
+                int truncated = 0;
+                int64_t mincap = (int64_t) len + (int64_t) ks_start;
+                if (mincap > INT32_MAX) {
+                    truncated = 1;
+                    len = 0;
+                    mincap = ks_start;
+                }
+
+                if (S->keysort_capacity < mincap) {
+                    if (mincap >= INT32_MAX / 2) {
+                        S->keysort_capacity = INT32_MAX;
+                    } else {
+                        S->keysort_capacity = (int32_t)(mincap * 2);
+                    }
+                    S->keysort_buffer = janet_srealloc(S->keysort_buffer, sizeof(int32_t) * S->keysort_capacity);
+                    if (NULL == S->keysort_buffer) {
+                        JANET_OUT_OF_MEMORY;
                     }
                 }
+
+                janet_sorted_keys(kvs, cap, S->keysort_buffer + ks_start);
+                S->keysort_start += len;
+                if (!(S->flags & JANET_PRETTY_NOTRUNC) && (len > JANET_PRETTY_DICT_LIMIT)) {
+                    len = JANET_PRETTY_DICT_LIMIT;
+                    truncated = 1;
+                }
+
+                for (i = 0; i < len; i++) {
+                    if (i) print_newline(S, len < JANET_PRETTY_DICT_ONELINE);
+                    int32_t j = S->keysort_buffer[i + ks_start];
+                    janet_pretty_one(S, kvs[j].key, 0);
+                    janet_buffer_push_u8(S->buffer, ' ');
+                    janet_pretty_one(S, kvs[j].value, 1);
+                }
+
+                if (truncated) {
+                    print_newline(S, 0);
+                    janet_buffer_push_cstring(S->buffer, "...");
+                }
+
+                S->keysort_start = ks_start;
             }
             S->indent -= 2;
             S->depth++;
@@ -484,6 +679,9 @@ static JanetBuffer *janet_pretty_(JanetBuffer *buffer, int depth, int flags, Jan
     S.indent = 0;
     S.flags = flags;
     S.bufstartlen = startlen;
+    S.keysort_capacity = 0;
+    S.keysort_buffer = NULL;
+    S.keysort_start = 0;
     janet_table_init(&S.seen, 10);
     janet_pretty_one(&S, x, 0);
     janet_table_deinit(&S.seen);
@@ -496,6 +694,32 @@ JanetBuffer *janet_pretty(JanetBuffer *buffer, int depth, int flags, Janet x) {
     return janet_pretty_(buffer, depth, flags, x, buffer ? buffer->count : 0);
 }
 
+static JanetBuffer *janet_jdn_(JanetBuffer *buffer, int depth, Janet x, int32_t startlen) {
+    struct pretty S;
+    if (NULL == buffer) {
+        buffer = janet_buffer(0);
+    }
+    S.buffer = buffer;
+    S.depth = depth;
+    S.indent = 0;
+    S.flags = 0;
+    S.bufstartlen = startlen;
+    S.keysort_capacity = 0;
+    S.keysort_buffer = NULL;
+    S.keysort_start = 0;
+    janet_table_init(&S.seen, 10);
+    int res = print_jdn_one(&S, x, depth);
+    janet_table_deinit(&S.seen);
+    if (res) {
+        janet_panic("could not print to jdn format");
+    }
+    return S.buffer;
+}
+
+JanetBuffer *janet_jdn(JanetBuffer *buffer, int depth, Janet x) {
+    return janet_jdn_(buffer, depth, x, buffer ? buffer->count : 0);
+}
+
 static const char *typestr(Janet x) {
     JanetType t = janet_type(x);
     return (t == JANET_ABSTRACT)
@@ -520,96 +744,6 @@ static void pushtypes(JanetBuffer *buffer, int types) {
     }
 }
 
-void janet_formatb(JanetBuffer *bufp, const char *format, va_list args) {
-    for (const char *c = format; *c; c++) {
-        switch (*c) {
-            default:
-                janet_buffer_push_u8(bufp, *c);
-                break;
-            case '%': {
-                if (c[1] == '\0')
-                    break;
-                switch (*++c) {
-                    default:
-                        janet_buffer_push_u8(bufp, *c);
-                        break;
-                    case 'f':
-                        number_to_string_b(bufp, va_arg(args, double));
-                        break;
-                    case 'd':
-                        integer_to_string_b(bufp, va_arg(args, long));
-                        break;
-                    case 'S': {
-                        const uint8_t *str = va_arg(args, const uint8_t *);
-                        janet_buffer_push_bytes(bufp, str, janet_string_length(str));
-                        break;
-                    }
-                    case 's':
-                        janet_buffer_push_cstring(bufp, va_arg(args, const char *));
-                        break;
-                    case 'c':
-                        janet_buffer_push_u8(bufp, (uint8_t) va_arg(args, long));
-                        break;
-                    case 'q': {
-                        const uint8_t *str = va_arg(args, const uint8_t *);
-                        janet_escape_string_b(bufp, str);
-                        break;
-                    }
-                    case 't': {
-                        janet_buffer_push_cstring(bufp, typestr(va_arg(args, Janet)));
-                        break;
-                    }
-                    case 'T': {
-                        int types = va_arg(args, long);
-                        pushtypes(bufp, types);
-                        break;
-                    }
-                    case 'V': {
-                        janet_to_string_b(bufp, va_arg(args, Janet));
-                        break;
-                    }
-                    case 'v': {
-                        janet_description_b(bufp, va_arg(args, Janet));
-                        break;
-                    }
-                    case 'p': {
-                        janet_pretty(bufp, 4, 0, va_arg(args, Janet));
-                        break;
-                    }
-                    case 'P': {
-                        janet_pretty(bufp, 4, JANET_PRETTY_COLOR, va_arg(args, Janet));
-                        break;
-                    }
-                }
-            }
-        }
-    }
-}
-
-/* Helper function for formatting strings. Useful for generating error messages and the like.
- * Similar to printf, but specialized for operating with janet. */
-const uint8_t *janet_formatc(const char *format, ...) {
-    va_list args;
-    const uint8_t *ret;
-    JanetBuffer buffer;
-    int32_t len = 0;
-
-    /* Calculate length, init buffer and args */
-    while (format[len]) len++;
-    janet_buffer_init(&buffer, len);
-    va_start(args, format);
-
-    /* Run format */
-    janet_formatb(&buffer, format, args);
-
-    /* Iterate length */
-    va_end(args);
-
-    ret = janet_string(buffer.data, buffer.count);
-    janet_buffer_deinit(&buffer);
-    return ret;
-}
-
 /*
  * code adapted from lua/lstrlib.c http://lua.org
  */
@@ -650,6 +784,154 @@ static const char *scanformat(
     return p;
 }
 
+void janet_formatbv(JanetBuffer *b, const char *format, va_list args) {
+    const char *format_end = format + strlen(format);
+    const char *c = format;
+    int32_t startlen = b->count;
+    while (c < format_end) {
+        if (*c != '%') {
+            janet_buffer_push_u8(b, (uint8_t) *c++);
+        } else if (*++c == '%') {
+            janet_buffer_push_u8(b, (uint8_t) *c++);
+        } else {
+            char form[MAX_FORMAT], item[MAX_ITEM];
+            char width[3], precision[3];
+            int nb = 0; /* number of bytes in added item */
+            c = scanformat(c, form, width, precision);
+            switch (*c++) {
+                case 'c': {
+                    int n = va_arg(args, long);
+                    nb = snprintf(item, MAX_ITEM, form, n);
+                    break;
+                }
+                case 'd':
+                case 'i':
+                case 'o':
+                case 'x':
+                case 'X': {
+                    int32_t n = va_arg(args, long);
+                    nb = snprintf(item, MAX_ITEM, form, n);
+                    break;
+                }
+                case 'a':
+                case 'A':
+                case 'e':
+                case 'E':
+                case 'f':
+                case 'g':
+                case 'G': {
+                    double d = va_arg(args, double);
+                    nb = snprintf(item, MAX_ITEM, form, d);
+                    break;
+                }
+                case 's':
+                case 'S': {
+                    const char *str = va_arg(args, const char *);
+                    int32_t len = c[-1] == 's'
+                                  ? (int32_t) strlen(str)
+                                  : janet_string_length((JanetString) str);
+                    if (form[2] == '\0')
+                        janet_buffer_push_bytes(b, (const uint8_t *) str, len);
+                    else {
+                        if (len != (int32_t) strlen((const char *) str))
+                            janet_panic("string contains zeros");
+                        if (!strchr(form, '.') && len >= 100) {
+                            janet_panic("no precision and string is too long to be formatted");
+                        } else {
+                            nb = snprintf(item, MAX_ITEM, form, str);
+                        }
+                    }
+                    break;
+                }
+                case 'V':
+                    janet_to_string_b(b, va_arg(args, Janet));
+                    break;
+                case 'v':
+                    janet_description_b(b, va_arg(args, Janet));
+                    break;
+                case 't':
+                    janet_buffer_push_cstring(b, typestr(va_arg(args, Janet)));
+                    break;
+                case 'T': {
+                    int types = va_arg(args, long);
+                    pushtypes(b, types);
+                    break;
+                }
+                case 'M':
+                case 'm':
+                case 'N':
+                case 'n':
+                case 'Q':
+                case 'q':
+                case 'P':
+                case 'p': { /* janet pretty , precision = depth */
+                    int depth = atoi(precision);
+                    if (depth < 1) depth = JANET_RECURSION_GUARD;
+                    char d = c[-1];
+                    int has_color = (d == 'P') || (d == 'Q') || (d == 'M') || (d == 'N');
+                    int has_oneline = (d == 'Q') || (d == 'q') || (d == 'N') || (d == 'n');
+                    int has_notrunc = (d == 'M') || (d == 'm') || (d == 'N') || (d == 'n');
+                    int flags = 0;
+                    flags |= has_color ? JANET_PRETTY_COLOR : 0;
+                    flags |= has_oneline ? JANET_PRETTY_ONELINE : 0;
+                    flags |= has_notrunc ? JANET_PRETTY_NOTRUNC : 0;
+                    janet_pretty_(b, depth, flags, va_arg(args, Janet), startlen);
+                    break;
+                }
+                case 'j': {
+                    int depth = atoi(precision);
+                    if (depth < 1)
+                        depth = JANET_RECURSION_GUARD;
+                    janet_jdn_(b, depth, va_arg(args, Janet), startlen);
+                    break;
+                }
+                default: {
+                    /* also treat cases 'nLlh' */
+                    janet_panicf("invalid conversion '%s' to 'format'",
+                                 form);
+                }
+            }
+            if (nb >= MAX_ITEM)
+                janet_panic("format buffer overflow");
+            if (nb > 0)
+                janet_buffer_push_bytes(b, (uint8_t *) item, nb);
+        }
+
+    }
+}
+
+/* Helper function for formatting strings. Useful for generating error messages and the like.
+ * Similar to printf, but specialized for operating with janet. */
+const uint8_t *janet_formatc(const char *format, ...) {
+    va_list args;
+    const uint8_t *ret;
+    JanetBuffer buffer;
+    int32_t len = 0;
+
+    /* Calculate length, init buffer and args */
+    while (format[len]) len++;
+    janet_buffer_init(&buffer, len);
+    va_start(args, format);
+
+    /* Run format */
+    janet_formatbv(&buffer, format, args);
+
+    /* Iterate length */
+    va_end(args);
+
+    ret = janet_string(buffer.data, buffer.count);
+    janet_buffer_deinit(&buffer);
+    return ret;
+}
+
+JanetBuffer *janet_formatb(JanetBuffer *buffer, const char *format, ...) {
+    va_list args;
+    va_start(args, format);
+    janet_formatbv(buffer, format, args);
+    va_end(args);
+    return buffer;
+}
+
 /* Shared implementation between string/format and
  * buffer/format */
 void janet_buffer_format(
@@ -683,7 +965,6 @@ void janet_buffer_format(
                 case 'd':
                 case 'i':
                 case 'o':
-                case 'u':
                 case 'x':
                 case 'X': {
                     int32_t n = janet_getinteger(argv, arg);
@@ -725,12 +1006,35 @@ void janet_buffer_format(
                     janet_description_b(b, argv[arg]);
                     break;
                 }
+                case 't':
+                    janet_buffer_push_cstring(b, typestr(argv[arg]));
+                    break;
+                case 'M':
+                case 'm':
+                case 'N':
+                case 'n':
+                case 'Q':
+                case 'q':
                 case 'P':
                 case 'p': { /* janet pretty , precision = depth */
+                    int depth = atoi(precision);
+                    if (depth < 1) depth = JANET_RECURSION_GUARD;
+                    char d = strfrmt[-1];
+                    int has_color = (d == 'P') || (d == 'Q') || (d == 'M') || (d == 'N');
+                    int has_oneline = (d == 'Q') || (d == 'q') || (d == 'N') || (d == 'n');
+                    int has_notrunc = (d == 'M') || (d == 'm') || (d == 'N') || (d == 'n');
+                    int flags = 0;
+                    flags |= has_color ? JANET_PRETTY_COLOR : 0;
+                    flags |= has_oneline ? JANET_PRETTY_ONELINE : 0;
+                    flags |= has_notrunc ? JANET_PRETTY_NOTRUNC : 0;
+                    janet_pretty_(b, depth, flags, argv[arg], startlen);
+                    break;
+                }
+                case 'j': {
                     int depth = atoi(precision);
                     if (depth < 1)
-                        depth = 4;
-                    janet_pretty_(b, depth, (strfrmt[-1] == 'P') ? JANET_PRETTY_COLOR : 0, argv[arg], startlen);
+                        depth = JANET_RECURSION_GUARD;
+                    janet_jdn_(b, depth, argv[arg], startlen);
                     break;
                 }
                 default: {
@@ -740,9 +1044,12 @@ void janet_buffer_format(
                 }
             }
             if (nb >= MAX_ITEM)
-                janet_panicf("format buffer overflow", form);
+                janet_panic("format buffer overflow");
             if (nb > 0)
                 janet_buffer_push_bytes(b, (uint8_t *) item, nb);
         }
     }
 }
+
+#undef HEX
+#undef BUFSIZE

src/core/regalloc.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,6 +21,7 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "regalloc.h"
 #include "util.h"
@@ -35,7 +36,7 @@ void janetc_regalloc_init(JanetcRegisterAllocator *ra) {
 }
 
 void janetc_regalloc_deinit(JanetcRegisterAllocator *ra) {
-    free(ra->chunks);
+    janet_free(ra->chunks);
 }
 
 /* Fallbacks for when ctz not available */
@@ -66,10 +67,10 @@ void janetc_regalloc_clone(JanetcRegisterAllocator *dest, JanetcRegisterAllocato
     dest->count = src->count;
     dest->capacity = src->capacity;
     dest->max = src->max;
-    size = sizeof(uint32_t) * dest->capacity;
+    size = sizeof(uint32_t) * (size_t) dest->capacity;
     dest->regtemps = 0;
     if (size) {
-        dest->chunks = malloc(size);
+        dest->chunks = janet_malloc(size);
         if (!dest->chunks) {
             JANET_OUT_OF_MEMORY;
         }
@@ -86,7 +87,7 @@ static void pushchunk(JanetcRegisterAllocator *ra) {
     int32_t newcount = ra->count + 1;
     if (newcount > ra->capacity) {
         int32_t newcapacity = newcount * 2;
-        ra->chunks = realloc(ra->chunks, newcapacity * sizeof(uint32_t));
+        ra->chunks = janet_realloc(ra->chunks, (size_t) newcapacity * sizeof(uint32_t));
         if (!ra->chunks) {
             JANET_OUT_OF_MEMORY;
         }
@@ -144,7 +145,7 @@ void janetc_regalloc_free(JanetcRegisterAllocator *ra, int32_t reg) {
 int32_t janetc_regalloc_temp(JanetcRegisterAllocator *ra, JanetcRegisterTemp nth) {
     int32_t oldmax = ra->max;
     if (ra->regtemps & (1 << nth)) {
-        janet_exit("regtemp already allocated");
+        JANET_EXIT("regtemp already allocated");
     }
     ra->regtemps |= 1 << nth;
     int32_t reg = janetc_regalloc_1(ra);

src/core/regalloc.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to

src/core/run.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,6 +21,7 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "state.h"
 #endif
@@ -49,38 +50,44 @@ int janet_dobytes(JanetTable *env, const uint8_t *bytes, int32_t len, const char
                 JanetFiber *fiber = janet_fiber(f, 64, 0, NULL);
                 fiber->env = env;
                 JanetSignal status = janet_continue(fiber, janet_wrap_nil(), &ret);
-                if (status != JANET_SIGNAL_OK) {
-                    janet_stacktrace(fiber, ret);
+                if (status != JANET_SIGNAL_OK && status != JANET_SIGNAL_EVENT) {
+                    janet_stacktrace_ext(fiber, ret, "");
                     errflags |= 0x01;
                     done = 1;
                 }
             } else {
-                fprintf(stderr, "compile error in %s: %s\n", sourcePath,
-                        (const char *)cres.error);
+                ret = janet_wrap_string(cres.error);
+                if (cres.macrofiber) {
+                    janet_eprintf("compile error in %s: ", sourcePath);
+                    janet_stacktrace_ext(cres.macrofiber, ret, "");
+                } else {
+                    janet_eprintf("compile error in %s: %s\n", sourcePath,
+                                  (const char *)cres.error);
+                }
                 errflags |= 0x02;
                 done = 1;
             }
         }
 
+        if (done) break;
+
         /* Dispatch based on parse state */
         switch (janet_parser_status(&parser)) {
             case JANET_PARSE_DEAD:
                 done = 1;
                 break;
-            case JANET_PARSE_ERROR:
+            case JANET_PARSE_ERROR: {
+                const char *e = janet_parser_error(&parser);
                 errflags |= 0x04;
-                fprintf(stderr, "parse error in %s: %s\n",
-                        sourcePath, janet_parser_error(&parser));
+                ret = janet_cstringv(e);
+                size_t line = parser.line;
+                size_t col = parser.column;
+                janet_eprintf("%s:%lu:%lu: parse error: %s\n", sourcePath, line, col, e);
                 done = 1;
                 break;
-            case JANET_PARSE_PENDING:
-                if (index == len) {
-                    janet_parser_eof(&parser);
-                } else {
-                    janet_parser_consume(&parser, bytes[index++]);
-                }
-                break;
+            }
             case JANET_PARSE_ROOT:
+            case JANET_PARSE_PENDING:
                 if (index >= len) {
                     janet_parser_eof(&parser);
                 } else {
@@ -94,6 +101,14 @@ int janet_dobytes(JanetTable *env, const uint8_t *bytes, int32_t len, const char
     /* Clean up and return errors */
     janet_parser_deinit(&parser);
     if (where) janet_gcunroot(janet_wrap_string(where));
+#ifdef JANET_EV
+    /* Enter the event loop if we are not already in it */
+    if (janet_vm.stackn == 0) {
+        janet_gcroot(ret);
+        janet_loop();
+        janet_gcunroot(ret);
+    }
+#endif
     if (out) *out = ret;
     return errflags;
 }
@@ -104,3 +119,19 @@ int janet_dostring(JanetTable *env, const char *str, const char *sourcePath, Jan
     return janet_dobytes(env, (const uint8_t *)str, len, sourcePath, out);
 }
 
+/* Run a fiber to completion (use event loop if enabled). Return the status. */
+int janet_loop_fiber(JanetFiber *fiber) {
+    int status;
+#ifdef JANET_EV
+    janet_schedule(fiber, janet_wrap_nil());
+    janet_loop();
+    status = janet_fiber_status(fiber);
+#else
+    Janet out;
+    status = janet_continue(fiber, janet_wrap_nil(), &out);
+    if (status != JANET_SIGNAL_OK && status != JANET_SIGNAL_EVENT) {
+        janet_stacktrace_ext(fiber, out, "");
+    }
+#endif
+    return status;
+}

src/core/specials.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,6 +21,7 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "compile.h"
 #include "util.h"
@@ -55,8 +56,14 @@ static JanetSlot qq_slots(JanetFopts opts, JanetSlot *slots, int makeop) {
     return target;
 }
 
-static JanetSlot quasiquote(JanetFopts opts, Janet x) {
+static JanetSlot quasiquote(JanetFopts opts, Janet x, int depth, int level) {
+    if (depth == 0) {
+        janetc_cerror(opts.compiler, "quasiquote too deeply nested");
+        return janetc_cslot(janet_wrap_nil());
+    }
     JanetSlot *slots = NULL;
+    JanetFopts subopts = opts;
+    subopts.flags &= ~JANET_FOPTS_HINT;
     switch (janet_type(x)) {
         default:
             return janetc_cslot(x);
@@ -66,11 +73,18 @@ static JanetSlot quasiquote(JanetFopts opts, Janet x) {
             len = janet_tuple_length(tup);
             if (len > 1 && janet_checktype(tup[0], JANET_SYMBOL)) {
                 const uint8_t *head = janet_unwrap_symbol(tup[0]);
-                if (!janet_cstrcmp(head, "unquote"))
-                    return janetc_value(janetc_fopts_default(opts.compiler), tup[1]);
+                if (!janet_cstrcmp(head, "unquote")) {
+                    if (level == 0) {
+                        return janetc_value(janetc_fopts_default(opts.compiler), tup[1]);
+                    } else {
+                        level--;
+                    }
+                } else if (!janet_cstrcmp(head, "quasiquote")) {
+                    level++;
+                }
             }
             for (i = 0; i < len; i++)
-                janet_v_push(slots, quasiquote(opts, tup[i]));
+                janet_v_push(slots, quasiquote(subopts, tup[i], depth - 1, level));
             return qq_slots(opts, slots, (janet_tuple_flag(tup) & JANET_TUPLE_FLAG_BRACKETCTOR)
                             ? JOP_MAKE_BRACKET_TUPLE
                             : JOP_MAKE_TUPLE);
@@ -79,7 +93,7 @@ static JanetSlot quasiquote(JanetFopts opts, Janet x) {
             int32_t i;
             JanetArray *array = janet_unwrap_array(x);
             for (i = 0; i < array->count; i++)
-                janet_v_push(slots, quasiquote(opts, array->data[i]));
+                janet_v_push(slots, quasiquote(subopts, array->data[i], depth - 1, level));
             return qq_slots(opts, slots, JOP_MAKE_ARRAY);
         }
         case JANET_TABLE:
@@ -88,8 +102,8 @@ static JanetSlot quasiquote(JanetFopts opts, Janet x) {
             int32_t len, cap = 0;
             janet_dictionary_view(x, &kvs, &len, &cap);
             while ((kv = janet_dictionary_next(kvs, cap, kv))) {
-                JanetSlot key = quasiquote(opts, kv->key);
-                JanetSlot value =  quasiquote(opts, kv->value);
+                JanetSlot key = quasiquote(subopts, kv->key, depth - 1, level);
+                JanetSlot value =  quasiquote(subopts, kv->value, depth - 1, level);
                 key.flags &= ~JANET_SLOT_SPLICED;
                 value.flags &= ~JANET_SLOT_SPLICED;
                 janet_v_push(slots, key);
@@ -106,7 +120,7 @@ static JanetSlot janetc_quasiquote(JanetFopts opts, int32_t argn, const Janet *a
         janetc_cerror(opts.compiler, "expected 1 argument");
         return janetc_cslot(janet_wrap_nil());
     }
-    return quasiquote(opts, argv[0]);
+    return quasiquote(opts, argv[0], JANET_RECURSION_GUARD, 0);
 }
 
 static JanetSlot janetc_unquote(JanetFopts opts, int32_t argn, const Janet *argv) {
@@ -116,7 +130,7 @@ static JanetSlot janetc_unquote(JanetFopts opts, int32_t argn, const Janet *argv
     return janetc_cslot(janet_wrap_nil());
 }
 
-/* Preform destructuring. Be careful to
+/* Perform destructuring. Be careful to
  * keep the order registers are freed.
  * Returns if the slot 'right' can be freed. */
 static int destructure(JanetCompiler *c,
@@ -142,11 +156,72 @@ static int destructure(JanetCompiler *c,
             for (int32_t i = 0; i < len; i++) {
                 JanetSlot nextright = janetc_farslot(c);
                 Janet subval = values[i];
+
+                if (janet_checktype(subval, JANET_SYMBOL) && !janet_cstrcmp(janet_unwrap_symbol(subval), "&")) {
+                    if (i + 1 >= len) {
+                        janetc_cerror(c, "expected symbol following '& in destructuring pattern");
+                        return 1;
+                    }
+
+                    if (i + 2 < len) {
+                        int32_t num_extra = len - i - 1;
+                        Janet *extra = janet_tuple_begin(num_extra);
+                        janet_tuple_flag(extra) |= JANET_TUPLE_FLAG_BRACKETCTOR;
+
+                        for (int32_t j = 0; j < num_extra; ++j) {
+                            extra[j] = values[j + i + 1];
+                        }
+
+                        janetc_error(c, janet_formatc("expected a single symbol follow '& in destructuring pattern, found %q", janet_wrap_tuple(janet_tuple_end(extra))));
+                        return 1;
+                    }
+
+
+                    if (!janet_checktype(values[i + 1], JANET_SYMBOL)) {
+                        janetc_error(c, janet_formatc("expected symbol following '& in destructuring pattern, found %q", values[i + 1]));
+                        return 1;
+                    }
+
+                    JanetSlot argi = janetc_farslot(c);
+                    JanetSlot arg  = janetc_farslot(c);
+                    JanetSlot len  = janetc_farslot(c);
+
+                    janetc_emit_si(c, JOP_LOAD_INTEGER, argi, i, 0);
+                    janetc_emit_ss(c, JOP_LENGTH, len, right, 0);
+
+                    /* loop condition - reuse arg slot for the condition result */
+                    int32_t label_loop_start = janetc_emit_sss(c, JOP_LESS_THAN, arg, argi, len, 0);
+                    int32_t label_loop_cond_jump = janetc_emit_si(c, JOP_JUMP_IF_NOT, arg, 0, 0);
+
+                    /* loop body */
+                    janetc_emit_sss(c, JOP_GET, arg, right, argi, 0);
+                    janetc_emit_s(c, JOP_PUSH, arg, 0);
+                    janetc_emit_ssi(c, JOP_ADD_IMMEDIATE, argi, argi, 1, 0);
+
+                    /* loop - jump back to the start of the loop */
+                    int32_t label_loop_loop = janet_v_count(c->buffer);
+                    janetc_emit(c, JOP_JUMP);
+                    int32_t label_loop_exit = janet_v_count(c->buffer);
+
+                    c->buffer[label_loop_cond_jump] |= (label_loop_exit - label_loop_cond_jump) << 16;
+                    c->buffer[label_loop_loop] |= (label_loop_start - label_loop_loop) << 8;
+
+                    janetc_freeslot(c, argi);
+                    janetc_freeslot(c, arg);
+                    janetc_freeslot(c, len);
+
+                    janetc_emit_s(c, JOP_MAKE_TUPLE, nextright, 1);
+
+                    leaf(c, janet_unwrap_symbol(values[i + 1]), nextright, attr);
+                    janetc_freeslot(c, nextright);
+                    break;
+                }
+
                 if (i < 0x100) {
                     janetc_emit_ssu(c, JOP_GET_INDEX, nextright, right, (uint8_t) i, 1);
                 } else {
                     JanetSlot k = janetc_cslot(janet_wrap_integer(i));
-                    janetc_emit_sss(c, JOP_GET, nextright, right, k, 1);
+                    janetc_emit_sss(c, JOP_IN, nextright, right, k, 1);
                 }
                 if (destructure(c, subval, nextright, leaf, attr))
                     janetc_freeslot(c, nextright);
@@ -162,7 +237,7 @@ static int destructure(JanetCompiler *c,
                 if (janet_checktype(kvs[i].key, JANET_NIL)) continue;
                 JanetSlot nextright = janetc_farslot(c);
                 JanetSlot k = janetc_value(janetc_fopts_default(c), kvs[i].key);
-                janetc_emit_sss(c, JOP_GET, nextright, right, k, 1);
+                janetc_emit_sss(c, JOP_IN, nextright, right, k, 1);
                 if (destructure(c, kvs[i].value, nextright, leaf, attr))
                     janetc_freeslot(c, nextright);
             }
@@ -175,8 +250,8 @@ static int destructure(JanetCompiler *c,
 static const Janet *janetc_make_sourcemap(JanetCompiler *c) {
     Janet *tup = janet_tuple_begin(3);
     tup[0] = c->source ? janet_wrap_string(c->source) : janet_wrap_nil();
-    tup[1] = janet_wrap_integer(c->current_mapping.start);
-    tup[2] = janet_wrap_integer(c->current_mapping.end);
+    tup[1] = janet_wrap_integer(c->current_mapping.line);
+    tup[2] = janet_wrap_integer(c->current_mapping.column);
     return janet_tuple_end(tup);
 }
 
@@ -239,6 +314,9 @@ static JanetTable *handleattr(JanetCompiler *c, int32_t argn, const Janet *argv)
             case JANET_STRING:
                 janet_table_put(tab, janet_ckeywordv("doc"), attr);
                 break;
+            case JANET_STRUCT:
+                janet_table_merge_struct(tab, janet_unwrap_struct(attr));
+                break;
         }
     }
     return tab;
@@ -278,18 +356,29 @@ static int varleaf(
     JanetCompiler *c,
     const uint8_t *sym,
     JanetSlot s,
-    JanetTable *attr) {
+    JanetTable *reftab) {
     if (c->scope->flags & JANET_SCOPE_TOP) {
         /* Global var, generate var */
         JanetSlot refslot;
-        JanetTable *reftab = janet_table(1);
-        reftab->proto = attr;
-        JanetArray *ref = janet_array(1);
-        janet_array_push(ref, janet_wrap_nil());
-        janet_table_put(reftab, janet_ckeywordv("ref"), janet_wrap_array(ref));
-        janet_table_put(reftab, janet_ckeywordv("source-map"),
+        JanetTable *entry = janet_table_clone(reftab);
+
+        Janet redef_kw = janet_ckeywordv("redef");
+        int is_redef = janet_truthy(janet_table_get(c->env, redef_kw));
+
+        JanetArray *ref;
+        JanetBinding old_binding;
+        if (is_redef && (old_binding = janet_resolve_ext(c->env, sym),
+                         old_binding.type == JANET_BINDING_VAR)) {
+            ref = janet_unwrap_array(old_binding.value);
+        } else {
+            ref = janet_array(1);
+            janet_array_push(ref, janet_wrap_nil());
+        }
+
+        janet_table_put(entry, janet_ckeywordv("ref"), janet_wrap_array(ref));
+        janet_table_put(entry, janet_ckeywordv("source-map"),
                         janet_wrap_tuple(janetc_make_sourcemap(c)));
-        janet_table_put(c->env, janet_wrap_symbol(sym), janet_wrap_table(reftab));
+        janet_table_put(c->env, janet_wrap_symbol(sym), janet_wrap_table(entry));
         refslot = janetc_cslot(janet_wrap_array(ref));
         janetc_emit_ssu(c, JOP_PUT_INDEX, refslot, s, 0, 0);
         return 1;
@@ -312,24 +401,38 @@ static int defleaf(
     JanetCompiler *c,
     const uint8_t *sym,
     JanetSlot s,
-    JanetTable *attr) {
+    JanetTable *tab) {
     if (c->scope->flags & JANET_SCOPE_TOP) {
-        JanetTable *tab = janet_table(2);
-        janet_table_put(tab, janet_ckeywordv("source-map"),
+        JanetTable *entry = janet_table_clone(tab);
+        janet_table_put(entry, janet_ckeywordv("source-map"),
                         janet_wrap_tuple(janetc_make_sourcemap(c)));
-        tab->proto = attr;
-        JanetSlot valsym = janetc_cslot(janet_ckeywordv("value"));
-        JanetSlot tabslot = janetc_cslot(janet_wrap_table(tab));
+
+        Janet redef_kw = janet_ckeywordv("redef");
+        int is_redef = janet_truthy(janet_table_get(c->env, redef_kw));
+        if (is_redef) janet_table_put(entry, redef_kw, janet_wrap_true());
+
+        if (is_redef) {
+            JanetBinding binding = janet_resolve_ext(c->env, sym);
+            JanetArray *ref;
+            if (binding.type == JANET_BINDING_DYNAMIC_DEF || binding.type == JANET_BINDING_DYNAMIC_MACRO) {
+                ref = janet_unwrap_array(binding.value);
+            } else {
+                ref = janet_array(1);
+                janet_array_push(ref, janet_wrap_nil());
+            }
+            janet_table_put(entry, janet_ckeywordv("ref"), janet_wrap_array(ref));
+            JanetSlot refslot = janetc_cslot(janet_wrap_array(ref));
+            janetc_emit_ssu(c, JOP_PUT_INDEX, refslot, s, 0, 0);
+        } else {
+            JanetSlot valsym = janetc_cslot(janet_ckeywordv("value"));
+            JanetSlot tabslot = janetc_cslot(janet_wrap_table(entry));
+            janetc_emit_sss(c, JOP_PUT, tabslot, valsym, s, 0);
+        }
 
         /* Add env entry to env */
-        janet_table_put(c->env, janet_wrap_symbol(sym), janet_wrap_table(tab));
-
-        /* Put value in table when evaulated */
-        janetc_emit_sss(c, JOP_PUT, tabslot, valsym, s, 0);
-        return 1;
-    } else {
-        return namelocal(c, sym, 0, s);
+        janet_table_put(c->env, janet_wrap_symbol(sym), janet_wrap_table(entry));
     }
+    return namelocal(c, sym, 0, s);
 }
 
 static JanetSlot janetc_def(JanetFopts opts, int32_t argn, const Janet *argv) {
@@ -399,7 +502,9 @@ static JanetSlot janetc_if(JanetFopts opts, int32_t argn, const Janet *argv) {
         right = janetc_value(bodyopts, truebody);
         if (!drop && !tail) janetc_copy(c, target, right);
         janetc_popscope(c);
-        janetc_throwaway(bodyopts, falsebody);
+        if (!janet_checktype(falsebody, JANET_NIL)) {
+            janetc_throwaway(bodyopts, falsebody);
+        }
         janetc_popscope(c);
         return target;
     }
@@ -460,6 +565,28 @@ static JanetSlot janetc_do(JanetFopts opts, int32_t argn, const Janet *argv) {
     return ret;
 }
 
+
+/* Compile an upscope form. Upscope forms execute their body sequentially and
+ * evaluate to the last expression in the body, but without lexical scope. */
+static JanetSlot janetc_upscope(JanetFopts opts, int32_t argn, const Janet *argv) {
+    int32_t i;
+    JanetSlot ret = janetc_cslot(janet_wrap_nil());
+    JanetCompiler *c = opts.compiler;
+    JanetFopts subopts = janetc_fopts_default(c);
+    for (i = 0; i < argn; i++) {
+        if (i != argn - 1) {
+            subopts.flags = JANET_FOPTS_DROP;
+        } else {
+            subopts = opts;
+        }
+        ret = janetc_value(subopts, argv[i]);
+        if (i != argn - 1) {
+            janetc_freeslot(c, ret);
+        }
+    }
+    return ret;
+}
+
 /* Add a funcdef to the top most function scope */
 static int32_t janetc_addfuncdef(JanetCompiler *c, JanetFuncDef *def) {
     JanetScope *scope = c->scope;
@@ -528,6 +655,20 @@ static JanetSlot janetc_break(JanetFopts opts, int32_t argn, const Janet *argv)
     }
 }
 
+/* Check if a form matches the pattern (not= nil _) */
+static int janetc_check_notnil_form(Janet x, Janet *capture) {
+    if (!janet_checktype(x, JANET_TUPLE)) return 0;
+    JanetTuple tup = janet_unwrap_tuple(x);
+    if (!janet_checktype(tup[0], JANET_FUNCTION)) return 0;
+    if (3 != janet_tuple_length(tup)) return 0;
+    JanetFunction *fun = janet_unwrap_function(tup[0]);
+    uint32_t tag = fun->def->flags & JANET_FUNCDEF_FLAG_TAG;
+    if (tag != JANET_FUN_NEQ) return 0;
+    if (!janet_checktype(tup[1], JANET_NIL)) return 0;
+    *capture = tup[2];
+    return 1;
+}
+
 /*
  * :whiletop
  * ...
@@ -544,6 +685,9 @@ static JanetSlot janetc_while(JanetFopts opts, int32_t argn, const Janet *argv)
     JanetScope tempscope;
     int32_t labelwt, labeld, labeljt, labelc, i;
     int infinite = 0;
+    int is_notnil_form = 0;
+    uint8_t ifjmp = JOP_JUMP_IF;
+    uint8_t ifnjmp = JOP_JUMP_IF_NOT;
 
     if (argn < 2) {
         janetc_cerror(c, "expected at least 2 arguments");
@@ -554,13 +698,26 @@ static JanetSlot janetc_while(JanetFopts opts, int32_t argn, const Janet *argv)
 
     janetc_scope(&tempscope, c, JANET_SCOPE_WHILE, "while");
 
+    /* Check for `(not= nil _)` in condition, and if so, use the
+     * jmpnl or jmpnn instructions. This let's us implement `(each ...)`
+     * more efficiently. */
+    Janet condform = argv[0];
+    if (janetc_check_notnil_form(condform, &condform)) {
+        is_notnil_form = 1;
+        ifjmp = JOP_JUMP_IF_NOT_NIL;
+        ifnjmp = JOP_JUMP_IF_NIL;
+    }
+
     /* Compile condition */
-    cond = janetc_value(subopts, argv[0]);
+    cond = janetc_value(subopts, condform);
 
     /* Check for constant condition */
     if (cond.flags & JANET_SLOT_CONSTANT) {
         /* Loop never executes */
-        if (!janet_truthy(cond.constant)) {
+        int never_executes = is_notnil_form
+                             ? janet_checktype(cond.constant, JANET_NIL)
+                             : !janet_truthy(cond.constant);
+        if (never_executes) {
             janetc_popscope(c);
             return janetc_cslot(janet_wrap_nil());
         }
@@ -571,7 +728,7 @@ static JanetSlot janetc_while(JanetFopts opts, int32_t argn, const Janet *argv)
     /* Infinite loop does not need to check condition */
     labelc = infinite
              ? 0
-             : janetc_emit_si(c, JOP_JUMP_IF_NOT, cond, 0, 0);
+             : janetc_emit_si(c, ifnjmp, cond, 0, 0);
 
     /* Compile body */
     for (i = 1; i < argn; i++) {
@@ -582,18 +739,19 @@ static JanetSlot janetc_while(JanetFopts opts, int32_t argn, const Janet *argv)
     /* Check if closure created in while scope. If so,
      * recompile in a function scope. */
     if (tempscope.flags & JANET_SCOPE_CLOSURE) {
+        subopts = janetc_fopts_default(c);
         tempscope.flags |= JANET_SCOPE_UNUSED;
         janetc_popscope(c);
-        janet_v__cnt(c->buffer) = labelwt;
-        janet_v__cnt(c->mapbuffer) = labelwt;
+        if (c->buffer) janet_v__cnt(c->buffer) = labelwt;
+        if (c->mapbuffer) janet_v__cnt(c->mapbuffer) = labelwt;
 
         janetc_scope(&tempscope, c, JANET_SCOPE_FUNCTION, "while-iife");
 
         /* Recompile in the function scope */
-        cond = janetc_value(subopts, argv[0]);
+        cond = janetc_value(subopts, condform);
         if (!(cond.flags & JANET_SLOT_CONSTANT)) {
             /* If not an infinite loop, return nil when condition false */
-            janetc_emit_si(c, JOP_JUMP_IF, cond, 2, 0);
+            janetc_emit_si(c, ifjmp, cond, 2, 0);
             janetc_emit(c, JOP_RETURN_NIL);
         }
         for (i = 1; i < argn; i++) {
@@ -604,15 +762,17 @@ static JanetSlot janetc_while(JanetFopts opts, int32_t argn, const Janet *argv)
         int32_t tempself = janetc_regalloc_temp(&tempscope.ra, JANETC_REGTEMP_0);
         janetc_emit(c, JOP_LOAD_SELF | (tempself << 8));
         janetc_emit(c, JOP_TAILCALL | (tempself << 8));
+        janetc_regalloc_freetemp(&c->scope->ra, tempself, JANETC_REGTEMP_0);
         /* Compile function */
         JanetFuncDef *def = janetc_pop_funcdef(c);
         def->name = janet_cstring("_while");
+        janet_def_addflags(def);
         int32_t defindex = janetc_addfuncdef(c, def);
         /* And then load the closure and call it. */
         int32_t cloreg = janetc_regalloc_temp(&c->scope->ra, JANETC_REGTEMP_0);
         janetc_emit(c, JOP_CLOSURE | (cloreg << 8) | (defindex << 16));
         janetc_emit(c, JOP_CALL | (cloreg << 8) | (cloreg << 16));
-        janetc_regalloc_free(&c->scope->ra, cloreg);
+        janetc_regalloc_freetemp(&c->scope->ra, cloreg, JANETC_REGTEMP_0);
         c->scope->flags |= JANET_SCOPE_CLOSURE;
         return janetc_cslot(janet_wrap_nil());
     }
@@ -662,8 +822,8 @@ static JanetSlot janetc_fn(JanetFopts opts, int32_t argn, const Janet *argv) {
     c->scope->flags |= JANET_SCOPE_CLOSURE;
     janetc_scope(&fnscope, c, JANET_SCOPE_FUNCTION, "function");
 
-    if (argn < 2) {
-        errmsg = "expected at least 2 arguments to function literal";
+    if (argn == 0) {
+        errmsg = "expected at least 1 argument to function literal";
         goto error;
     }
 
@@ -679,6 +839,9 @@ static JanetSlot janetc_fn(JanetFopts opts, int32_t argn, const Janet *argv) {
         goto error;
     }
 
+    /* Keep track of destructured parameters */
+    JanetSlot *destructed_params = NULL;
+
     /* Compile function parameters */
     params = janet_unwrap_tuple(argv[parami]);
     paramcount = janet_tuple_length(params);
@@ -730,10 +893,22 @@ static JanetSlot janetc_fn(JanetFopts opts, int32_t argn, const Janet *argv) {
                 janetc_nameslot(c, janet_unwrap_symbol(param), janetc_farslot(c));
             }
         } else {
-            destructure(c, param, janetc_farslot(c), defleaf, NULL);
+            janet_v_push(destructed_params, janetc_farslot(c));
         }
     }
 
+    /* Compile destructed params */
+    int32_t j = 0;
+    for (i = 0; i < paramcount; i++) {
+        Janet param = params[i];
+        if (!janet_checktype(param, JANET_SYMBOL)) {
+            JanetSlot reg = destructed_params[j++];
+            destructure(c, param, reg, defleaf, NULL);
+            janetc_freeslot(c, reg);
+        }
+    }
+    janet_v_free(destructed_params);
+
     max_arity = (vararg || allow_extra) ? INT32_MAX : arity;
     if (!seenopt) min_arity = arity;
 
@@ -766,6 +941,7 @@ static JanetSlot janetc_fn(JanetFopts opts, int32_t argn, const Janet *argv) {
     if (structarg) def->flags |= JANET_FUNCDEF_FLAG_STRUCTARG;
 
     if (selfref) def->name = janet_unwrap_symbol(head);
+    janet_def_addflags(def);
     defindex = janetc_addfuncdef(c, def);
 
     /* Ensure enough slots for vararg function. */
@@ -795,6 +971,7 @@ static const JanetSpecial janetc_specials[] = {
     {"set", janetc_varset},
     {"splice", janetc_splice},
     {"unquote", janetc_unquote},
+    {"upscope", janetc_upscope},
     {"var", janetc_var},
     {"while", janetc_while}
 };

src/core/state.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -20,15 +20,42 @@
 * IN THE SOFTWARE.
 */
 
-#ifndef JANET_LINE_H_defined
-#define JANET_LINE_H_defined
-
+#ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
-
-void janet_line_init();
-void janet_line_deinit();
-
-void janet_line_get(const char *p, JanetBuffer *buffer);
-Janet janet_line_getter(int32_t argc, Janet *argv);
-
+#include "state.h"
 #endif
+
+JANET_THREAD_LOCAL JanetVM janet_vm;
+
+JanetVM *janet_local_vm(void) {
+    return &janet_vm;
+}
+
+JanetVM *janet_vm_alloc(void) {
+    JanetVM *mem = janet_malloc(sizeof(JanetVM));
+    if (NULL == mem) {
+        JANET_OUT_OF_MEMORY;
+    }
+    return mem;
+}
+
+void janet_vm_free(JanetVM *vm) {
+    janet_free(vm);
+}
+
+void janet_vm_save(JanetVM *into) {
+    *into = janet_vm;
+}
+
+void janet_vm_load(JanetVM *from) {
+    janet_vm = *from;
+}
+
+/* Trigger suspension of the Janet vm by trying to
+ * exit the interpeter loop when convenient. You can optionally
+ * use NULL to interrupt the current VM when convenient */
+void janet_interpreter_interrupt(JanetVM *vm) {
+    vm = vm ? vm : &janet_vm;
+    vm->auto_suspend = 1;
+}

src/core/state.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -25,44 +25,160 @@
 
 #include <stdint.h>
 
-/* The VM state. Rather than a struct that is passed
- * around, the vm state is global for simplicity. If
- * at some point a global state object, or context,
- * is required to be passed around, this is what would
- * be in it. However, thread local global variables for interpreter
- * state should allow easy multi-threading. */
+typedef int64_t JanetTimestamp;
 
-/* How many VM stacks have been entered */
-extern JANET_THREAD_LOCAL int janet_vm_stackn;
+typedef struct JanetScratch {
+    JanetScratchFinalizer finalize;
+    long long mem[]; /* for proper alignment */
+} JanetScratch;
 
-/* The current running fiber on the current thread.
- * Set and unset by janet_run. */
-extern JANET_THREAD_LOCAL JanetFiber *janet_vm_fiber;
+typedef struct {
+    JanetGCObject *self;
+    JanetGCObject *other;
+    int32_t index;
+    int32_t index2;
+} JanetTraversalNode;
 
-/* The current pointer to the inner most jmp_buf. The current
- * return point for panics. */
-extern JANET_THREAD_LOCAL jmp_buf *janet_vm_jmp_buf;
-extern JANET_THREAD_LOCAL Janet *janet_vm_return_reg;
+typedef struct {
+    int32_t capacity;
+    int32_t head;
+    int32_t tail;
+    void *data;
+} JanetQueue;
 
-/* The global registry for c functions. Used to store meta-data
- * along with otherwise bare c function pointers. */
-extern JANET_THREAD_LOCAL JanetTable *janet_vm_registry;
+typedef struct {
+    JanetTimestamp when;
+    JanetFiber *fiber;
+    JanetFiber *curr_fiber;
+    uint32_t sched_id;
+    int is_error;
+} JanetTimeout;
 
-/* Immutable value cache */
-extern JANET_THREAD_LOCAL const uint8_t **janet_vm_cache;
-extern JANET_THREAD_LOCAL uint32_t janet_vm_cache_capacity;
-extern JANET_THREAD_LOCAL uint32_t janet_vm_cache_count;
-extern JANET_THREAD_LOCAL uint32_t janet_vm_cache_deleted;
+/* Registry table for C functions - containts metadata that can
+ * be looked up by cfunction pointer. All strings here are pointing to
+ * static memory not managed by Janet. */
+typedef struct {
+    JanetCFunction cfun;
+    const char *name;
+    const char *name_prefix;
+    const char *source_file;
+    int32_t source_line;
+    /* int32_t min_arity; */
+    /* int32_t max_arity; */
+} JanetCFunRegistry;
 
-/* Garbage collection */
-extern JANET_THREAD_LOCAL void *janet_vm_blocks;
-extern JANET_THREAD_LOCAL uint32_t janet_vm_gc_interval;
-extern JANET_THREAD_LOCAL uint32_t janet_vm_next_collection;
-extern JANET_THREAD_LOCAL int janet_vm_gc_suspend;
+struct JanetVM {
+    /* Place for user data */
+    void *user;
 
-/* GC roots */
-extern JANET_THREAD_LOCAL Janet *janet_vm_roots;
-extern JANET_THREAD_LOCAL uint32_t janet_vm_root_count;
-extern JANET_THREAD_LOCAL uint32_t janet_vm_root_capacity;
+    /* Top level dynamic bindings */
+    JanetTable *top_dyns;
+
+    /* Cache the core environment */
+    JanetTable *core_env;
+
+    /* How many VM stacks have been entered */
+    int stackn;
+
+    /* If this flag is true, suspend on function calls and backwards jumps.
+     * When this occurs, this flag will be reset to 0. */
+    int auto_suspend;
+
+    /* The current running fiber on the current thread.
+     * Set and unset by janet_run. */
+    JanetFiber *fiber;
+    JanetFiber *root_fiber;
+
+    /* The current pointer to the inner most jmp_buf. The current
+     * return point for panics. */
+    jmp_buf *signal_buf;
+    Janet *return_reg;
+
+    /* The global registry for c functions. Used to store meta-data
+     * along with otherwise bare c function pointers. */
+    JanetCFunRegistry *registry;
+    size_t registry_cap;
+    size_t registry_count;
+    int registry_dirty;
+
+    /* Registry for abstract abstract types that can be marshalled.
+     * We need this to look up the constructors when unmarshalling. */
+    JanetTable *abstract_registry;
+
+    /* Immutable value cache */
+    const uint8_t **cache;
+    uint32_t cache_capacity;
+    uint32_t cache_count;
+    uint32_t cache_deleted;
+    uint8_t gensym_counter[8];
+
+    /* Garbage collection */
+    void *blocks;
+    size_t gc_interval;
+    size_t next_collection;
+    size_t block_count;
+    int gc_suspend;
+
+    /* GC roots */
+    Janet *roots;
+    size_t root_count;
+    size_t root_capacity;
+
+    /* Scratch memory */
+    JanetScratch **scratch_mem;
+    size_t scratch_cap;
+    size_t scratch_len;
+
+    /* Random number generator */
+    JanetRNG rng;
+
+    /* Traversal pointers */
+    JanetTraversalNode *traversal;
+    JanetTraversalNode *traversal_top;
+    JanetTraversalNode *traversal_base;
+
+    /* Event loop and scheduler globals */
+#ifdef JANET_EV
+    size_t tq_count;
+    size_t tq_capacity;
+    JanetQueue spawn;
+    JanetTimeout *tq;
+    JanetRNG ev_rng;
+    JanetListenerState **listeners;
+    size_t listener_count;
+    size_t listener_cap;
+    size_t extra_listeners;
+    JanetTable threaded_abstracts; /* All abstract types that can be shared between threads (used in this thread) */
+#ifdef JANET_WINDOWS
+    void **iocp;
+#elif defined(JANET_EV_EPOLL)
+    JanetHandle selfpipe[2];
+    int epoll;
+    int timerfd;
+    int timer_enabled;
+#elif defined(JANET_EV_KQUEUE)
+    JanetHandle selfpipe[2];
+    int kq;
+    int timer;
+    int timer_enabled;
+#else
+    JanetHandle selfpipe[2];
+    struct pollfd *fds;
+#endif
+#endif
+
+};
+
+extern JANET_THREAD_LOCAL JanetVM janet_vm;
+
+#ifdef JANET_NET
+void janet_net_init(void);
+void janet_net_deinit(void);
+#endif
+
+#ifdef JANET_EV
+void janet_ev_init(void);
+void janet_ev_deinit(void);
+#endif
 
 #endif /* JANET_STATE_H_defined */

src/core/string.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -20,18 +20,19 @@
 * IN THE SOFTWARE.
 */
 
-#include <string.h>
-
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "gc.h"
 #include "util.h"
 #include "state.h"
 #endif
 
+#include <string.h>
+
 /* Begin building a string */
 uint8_t *janet_string_begin(int32_t length) {
-    JanetStringHead *head = janet_gcalloc(JANET_MEMORY_STRING, sizeof(JanetStringHead) + length + 1);
+    JanetStringHead *head = janet_gcalloc(JANET_MEMORY_STRING, sizeof(JanetStringHead) + (size_t) length + 1);
     head->length = length;
     uint8_t *data = (uint8_t *)head->data;
     data[length] = 0;
@@ -46,11 +47,11 @@ const uint8_t *janet_string_end(uint8_t *str) {
 
 /* Load a buffer as a string */
 const uint8_t *janet_string(const uint8_t *buf, int32_t len) {
-    JanetStringHead *head = janet_gcalloc(JANET_MEMORY_STRING, sizeof(JanetStringHead) + len + 1);
+    JanetStringHead *head = janet_gcalloc(JANET_MEMORY_STRING, sizeof(JanetStringHead) + (size_t) len + 1);
     head->length = len;
     head->hash = janet_string_calchash(buf, len);
     uint8_t *data = (uint8_t *)head->data;
-    memcpy(data, buf, len);
+    safe_memcpy(data, buf, len);
     data[len] = 0;
     return data;
 }
@@ -61,7 +62,7 @@ int janet_string_compare(const uint8_t *lhs, const uint8_t *rhs) {
     int32_t ylen = janet_string_length(rhs);
     int32_t len = xlen > ylen ? ylen : xlen;
     int res = memcmp(lhs, rhs, len);
-    if (res) return res;
+    if (res) return res > 0 ? 1 : -1;
     if (xlen == ylen) return 0;
     return xlen < ylen ? -1 : 1;
 }
@@ -104,7 +105,10 @@ static void kmp_init(
     struct kmp_state *s,
     const uint8_t *text, int32_t textlen,
     const uint8_t *pat, int32_t patlen) {
-    int32_t *lookup = calloc(patlen, sizeof(int32_t));
+    if (patlen == 0) {
+        janet_panic("expected non-empty pattern");
+    }
+    int32_t *lookup = janet_calloc(patlen, sizeof(int32_t));
     if (!lookup) {
         JANET_OUT_OF_MEMORY;
     }
@@ -127,7 +131,7 @@ static void kmp_init(
 }
 
 static void kmp_deinit(struct kmp_state *state) {
-    free(state->lookup);
+    janet_free(state->lookup);
 }
 
 static void kmp_seti(struct kmp_state *state, int32_t i) {
@@ -166,13 +170,37 @@ static int32_t kmp_next(struct kmp_state *state) {
 
 /* CFuns */
 
-static Janet cfun_string_slice(int32_t argc, Janet *argv) {
-    JanetRange range = janet_getslice(argc, argv);
+JANET_CORE_FN(cfun_string_slice,
+              "(string/slice bytes &opt start end)",
+              "Returns a substring from a byte sequence. The substring is from "
+              "index start inclusive to index end exclusive. All indexing "
+              "is from 0. 'start' and 'end' can also be negative to indicate indexing "
+              "from the end of the string. Note that index -1 is synonymous with "
+              "index (length bytes) to allow a full negative slice range. ") {
     JanetByteView view = janet_getbytes(argv, 0);
+    JanetRange range = janet_getslice(argc, argv);
     return janet_stringv(view.bytes + range.start, range.end - range.start);
 }
 
-static Janet cfun_string_repeat(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_symbol_slice,
+              "(symbol/slice bytes &opt start end)",
+              "Same a string/slice, but returns a symbol.") {
+    JanetByteView view = janet_getbytes(argv, 0);
+    JanetRange range = janet_getslice(argc, argv);
+    return janet_symbolv(view.bytes + range.start, range.end - range.start);
+}
+
+JANET_CORE_FN(cfun_keyword_slice,
+              "(keyword/slice bytes &opt start end)",
+              "Same a string/slice, but returns a keyword.") {
+    JanetByteView view = janet_getbytes(argv, 0);
+    JanetRange range = janet_getslice(argc, argv);
+    return janet_keywordv(view.bytes + range.start, range.end - range.start);
+}
+
+JANET_CORE_FN(cfun_string_repeat,
+              "(string/repeat bytes n)",
+              "Returns a string that is n copies of bytes concatenated.") {
     janet_fixarity(argc, 2);
     JanetByteView view = janet_getbytes(argv, 0);
     int32_t rep = janet_getinteger(argv, 1);
@@ -183,12 +211,14 @@ static Janet cfun_string_repeat(int32_t argc, Janet *argv) {
     uint8_t *newbuf = janet_string_begin((int32_t) mulres);
     uint8_t *end = newbuf + mulres;
     for (uint8_t *p = newbuf; p < end; p += view.len) {
-        memcpy(p, view.bytes, view.len);
+        safe_memcpy(p, view.bytes, view.len);
     }
     return janet_wrap_string(janet_string_end(newbuf));
 }
 
-static Janet cfun_string_bytes(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_bytes,
+              "(string/bytes str)",
+              "Returns a tuple of integers that are the byte values of the string.") {
     janet_fixarity(argc, 1);
     JanetByteView view = janet_getbytes(argv, 0);
     Janet *tup = janet_tuple_begin(view.len);
@@ -199,7 +229,10 @@ static Janet cfun_string_bytes(int32_t argc, Janet *argv) {
     return janet_wrap_tuple(janet_tuple_end(tup));
 }
 
-static Janet cfun_string_frombytes(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_frombytes,
+              "(string/from-bytes & byte-vals)",
+              "Creates a string from integer parameters with byte values. All integers "
+              "will be coerced to the range of 1 byte 0-255.") {
     int32_t i;
     uint8_t *buf = janet_string_begin(argc);
     for (i = 0; i < argc; i++) {
@@ -209,7 +242,11 @@ static Janet cfun_string_frombytes(int32_t argc, Janet *argv) {
     return janet_wrap_string(janet_string_end(buf));
 }
 
-static Janet cfun_string_asciilower(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_asciilower,
+              "(string/ascii-lower str)",
+              "Returns a new string where all bytes are replaced with the "
+              "lowercase version of themselves in ASCII. Does only a very simple "
+              "case check, meaning no unicode support.") {
     janet_fixarity(argc, 1);
     JanetByteView view = janet_getbytes(argv, 0);
     uint8_t *buf = janet_string_begin(view.len);
@@ -224,7 +261,11 @@ static Janet cfun_string_asciilower(int32_t argc, Janet *argv) {
     return janet_wrap_string(janet_string_end(buf));
 }
 
-static Janet cfun_string_asciiupper(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_asciiupper,
+              "(string/ascii-upper str)",
+              "Returns a new string where all bytes are replaced with the "
+              "uppercase version of themselves in ASCII. Does only a very simple "
+              "case check, meaning no unicode support.") {
     janet_fixarity(argc, 1);
     JanetByteView view = janet_getbytes(argv, 0);
     uint8_t *buf = janet_string_begin(view.len);
@@ -239,7 +280,9 @@ static Janet cfun_string_asciiupper(int32_t argc, Janet *argv) {
     return janet_wrap_string(janet_string_end(buf));
 }
 
-static Janet cfun_string_reverse(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_reverse,
+              "(string/reverse str)",
+              "Returns a string that is the reversed version of str.") {
     janet_fixarity(argc, 1);
     JanetByteView view = janet_getbytes(argv, 0);
     uint8_t *buf = janet_string_begin(view.len);
@@ -263,7 +306,11 @@ static void findsetup(int32_t argc, Janet *argv, struct kmp_state *s, int32_t ex
     s->i = start;
 }
 
-static Janet cfun_string_find(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_find,
+              "(string/find patt str &opt start-index)",
+              "Searches for the first instance of pattern patt in string "
+              "str. Returns the index of the first character in patt if found, "
+              "otherwise returns nil.") {
     int32_t result;
     struct kmp_state state;
     findsetup(argc, argv, &state, 0);
@@ -274,7 +321,9 @@ static Janet cfun_string_find(int32_t argc, Janet *argv) {
            : janet_wrap_integer(result);
 }
 
-static Janet cfun_string_hasprefix(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_hasprefix,
+              "(string/has-prefix? pfx str)",
+              "Tests whether str starts with pfx.") {
     janet_fixarity(argc, 2);
     JanetByteView prefix = janet_getbytes(argv, 0);
     JanetByteView str = janet_getbytes(argv, 1);
@@ -283,7 +332,9 @@ static Janet cfun_string_hasprefix(int32_t argc, Janet *argv) {
            : janet_wrap_boolean(memcmp(prefix.bytes, str.bytes, prefix.len) == 0);
 }
 
-static Janet cfun_string_hassuffix(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_hassuffix,
+              "(string/has-suffix? sfx str)",
+              "Tests whether str ends with sfx.") {
     janet_fixarity(argc, 2);
     JanetByteView suffix = janet_getbytes(argv, 0);
     JanetByteView str = janet_getbytes(argv, 1);
@@ -294,7 +345,12 @@ static Janet cfun_string_hassuffix(int32_t argc, Janet *argv) {
                                        suffix.len) == 0);
 }
 
-static Janet cfun_string_findall(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_findall,
+              "(string/find-all patt str &opt start-index)",
+              "Searches for all instances of pattern patt in string "
+              "str. Returns an array of all indices of found patterns. Overlapping "
+              "instances of the pattern are counted individually, meaning a byte in str "
+              "may contribute to multiple found patterns.") {
     int32_t result;
     struct kmp_state state;
     findsetup(argc, argv, &state, 0);
@@ -328,7 +384,10 @@ static void replacesetup(int32_t argc, Janet *argv, struct replace_state *s) {
     s->substlen = subst.len;
 }
 
-static Janet cfun_string_replace(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_replace,
+              "(string/replace patt subst str)",
+              "Replace the first occurrence of patt with subst in the string str. "
+              "Will return the new string if patt is found, otherwise returns str.") {
     int32_t result;
     struct replace_state s;
     uint8_t *buf;
@@ -339,16 +398,20 @@ static Janet cfun_string_replace(int32_t argc, Janet *argv) {
         return janet_stringv(s.kmp.text, s.kmp.textlen);
     }
     buf = janet_string_begin(s.kmp.textlen - s.kmp.patlen + s.substlen);
-    memcpy(buf, s.kmp.text, result);
-    memcpy(buf + result, s.subst, s.substlen);
-    memcpy(buf + result + s.substlen,
-           s.kmp.text + result + s.kmp.patlen,
-           s.kmp.textlen - result - s.kmp.patlen);
+    safe_memcpy(buf, s.kmp.text, result);
+    safe_memcpy(buf + result, s.subst, s.substlen);
+    safe_memcpy(buf + result + s.substlen,
+                s.kmp.text + result + s.kmp.patlen,
+                s.kmp.textlen - result - s.kmp.patlen);
     kmp_deinit(&s.kmp);
     return janet_wrap_string(janet_string_end(buf));
 }
 
-static Janet cfun_string_replaceall(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_replaceall,
+              "(string/replace-all patt subst str)",
+              "Replace all instances of patt with subst in the string str. Overlapping "
+              "matches will not be counted, only the first match in such a span will be replaced. "
+              "Will return the new string if patt is found, otherwise returns str.") {
     int32_t result;
     struct replace_state s;
     JanetBuffer b;
@@ -368,7 +431,13 @@ static Janet cfun_string_replaceall(int32_t argc, Janet *argv) {
     return janet_wrap_string(ret);
 }
 
-static Janet cfun_string_split(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_split,
+              "(string/split delim str &opt start limit)",
+              "Splits a string str with delimiter delim and returns an array of "
+              "substrings. The substrings will not contain the delimiter delim. If delim "
+              "is not found, the returned array will have one element. Will start searching "
+              "for delim at the index start (if provided), and return up to a maximum "
+              "of limit results (if provided).") {
     int32_t result;
     JanetArray *array;
     struct kmp_state state;
@@ -378,40 +447,37 @@ static Janet cfun_string_split(int32_t argc, Janet *argv) {
     }
     findsetup(argc, argv, &state, 1);
     array = janet_array(0);
-    while ((result = kmp_next(&state)) >= 0 && limit--) {
+    while ((result = kmp_next(&state)) >= 0 && --limit) {
         const uint8_t *slice = janet_string(state.text + lastindex, result - lastindex);
         janet_array_push(array, janet_wrap_string(slice));
         lastindex = result + state.patlen;
+        kmp_seti(&state, lastindex);
     }
-    {
-        const uint8_t *slice = janet_string(state.text + lastindex, state.textlen - lastindex);
-        janet_array_push(array, janet_wrap_string(slice));
-    }
+    const uint8_t *slice = janet_string(state.text + lastindex, state.textlen - lastindex);
+    janet_array_push(array, janet_wrap_string(slice));
     kmp_deinit(&state);
     return janet_wrap_array(array);
 }
 
-static Janet cfun_string_checkset(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_checkset,
+              "(string/check-set set str)",
+              "Checks that the string str only contains bytes that appear in the string set. "
+              "Returns true if all bytes in str appear in set, false if some bytes in str do "
+              "not appear in set.") {
     uint32_t bitset[8] = {0, 0, 0, 0, 0, 0, 0, 0};
-    janet_arity(argc, 2, 3);
+    janet_fixarity(argc, 2);
     JanetByteView set = janet_getbytes(argv, 0);
     JanetByteView str = janet_getbytes(argv, 1);
     /* Populate set */
     for (int32_t i = 0; i < set.len; i++) {
         int index = set.bytes[i] >> 5;
-        uint32_t mask = 1 << (set.bytes[i] & 7);
+        uint32_t mask = 1 << (set.bytes[i] & 0x1F);
         bitset[index] |= mask;
     }
-    if (argc == 3) {
-        if (janet_getboolean(argv, 2)) {
-            for (int i = 0; i < 8; i++)
-                bitset[i] = ~bitset[i];
-        }
-    }
     /* Check set */
     for (int32_t i = 0; i < str.len; i++) {
         int index = str.bytes[i] >> 5;
-        uint32_t mask = 1 << (str.bytes[i] & 7);
+        uint32_t mask = 1 << (str.bytes[i] & 0x1F);
         if (!(bitset[index] & mask)) {
             return janet_wrap_false();
         }
@@ -419,7 +485,10 @@ static Janet cfun_string_checkset(int32_t argc, Janet *argv) {
     return janet_wrap_true();
 }
 
-static Janet cfun_string_join(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_join,
+              "(string/join parts &opt sep)",
+              "Joins an array of strings into one string, optionally separated by "
+              "a separator string sep.") {
     janet_arity(argc, 1, 2);
     JanetView parts = janet_getindexed(argv, 0);
     JanetByteView joiner;
@@ -449,17 +518,20 @@ static Janet cfun_string_join(int32_t argc, Janet *argv) {
         const uint8_t *chunk = NULL;
         int32_t chunklen = 0;
         if (i) {
-            memcpy(out, joiner.bytes, joiner.len);
+            safe_memcpy(out, joiner.bytes, joiner.len);
             out += joiner.len;
         }
         janet_bytes_view(parts.items[i], &chunk, &chunklen);
-        memcpy(out, chunk, chunklen);
+        safe_memcpy(out, chunk, chunklen);
         out += chunklen;
     }
     return janet_wrap_string(janet_string_end(buf));
 }
 
-static Janet cfun_string_format(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_format,
+              "(string/format format & values)",
+              "Similar to snprintf, but specialized for operating with Janet values. Returns "
+              "a new string.") {
     janet_arity(argc, 1, -1);
     JanetBuffer *buffer = janet_buffer(0);
     const char *strfrmt = (const char *) janet_getstring(argv, 0);
@@ -499,157 +571,65 @@ static void trim_help_args(int32_t argc, Janet *argv, JanetByteView *str, JanetB
     }
 }
 
-static Janet cfun_string_trim(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_trim,
+              "(string/trim str &opt set)",
+              "Trim leading and trailing whitespace from a byte sequence. If the argument "
+              "set is provided, consider only characters in set to be whitespace.") {
     JanetByteView str, set;
     trim_help_args(argc, argv, &str, &set);
     int32_t left_edge = trim_help_leftedge(str, set);
     int32_t right_edge = trim_help_rightedge(str, set);
+    if (right_edge < left_edge)
+        return janet_stringv(NULL, 0);
     return janet_stringv(str.bytes + left_edge, right_edge - left_edge);
 }
 
-static Janet cfun_string_triml(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_triml,
+              "(string/triml str &opt set)",
+              "Trim leading whitespace from a byte sequence. If the argument "
+              "set is provided, consider only characters in set to be whitespace.") {
     JanetByteView str, set;
     trim_help_args(argc, argv, &str, &set);
     int32_t left_edge = trim_help_leftedge(str, set);
     return janet_stringv(str.bytes + left_edge, str.len - left_edge);
 }
 
-static Janet cfun_string_trimr(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_string_trimr,
+              "(string/trimr str &opt set)",
+              "Trim trailing whitespace from a byte sequence. If the argument "
+              "set is provided, consider only characters in set to be whitespace.") {
     JanetByteView str, set;
     trim_help_args(argc, argv, &str, &set);
     int32_t right_edge = trim_help_rightedge(str, set);
     return janet_stringv(str.bytes, right_edge);
 }
 
-static const JanetReg string_cfuns[] = {
-    {
-        "string/slice", cfun_string_slice,
-        JDOC("(string/slice bytes [,start=0 [,end=(length str)]])\n\n"
-             "Returns a substring from a byte sequence. The substring is from "
-             "index start inclusive to index end exclusive. All indexing "
-             "is from 0. 'start' and 'end' can also be negative to indicate indexing "
-             "from the end of the string.")
-    },
-    {
-        "string/repeat", cfun_string_repeat,
-        JDOC("(string/repeat bytes n)\n\n"
-             "Returns a string that is n copies of bytes concatenated.")
-    },
-    {
-        "string/bytes", cfun_string_bytes,
-        JDOC("(string/bytes str)\n\n"
-             "Returns an array of integers that are the byte values of the string.")
-    },
-    {
-        "string/from-bytes", cfun_string_frombytes,
-        JDOC("(string/from-bytes &byte-vals)\n\n"
-             "Creates a string from integer params with byte values. All integers "
-             "will be coerced to the range of 1 byte 0-255.")
-    },
-    {
-        "string/ascii-lower", cfun_string_asciilower,
-        JDOC("(string/ascii-lower str)\n\n"
-             "Returns a new string where all bytes are replaced with the "
-             "lowercase version of themselves in ASCII. Does only a very simple "
-             "case check, meaning no unicode support.")
-    },
-    {
-        "string/ascii-upper", cfun_string_asciiupper,
-        JDOC("(string/ascii-upper str)\n\n"
-             "Returns a new string where all bytes are replaced with the "
-             "uppercase version of themselves in ASCII. Does only a very simple "
-             "case check, meaning no unicode support.")
-    },
-    {
-        "string/reverse", cfun_string_reverse,
-        JDOC("(string/reverse str)\n\n"
-             "Returns a string that is the reversed version of str.")
-    },
-    {
-        "string/find", cfun_string_find,
-        JDOC("(string/find patt str)\n\n"
-             "Searches for the first instance of pattern patt in string "
-             "str. Returns the index of the first character in patt if found, "
-             "otherwise returns nil.")
-    },
-    {
-        "string/find-all", cfun_string_findall,
-        JDOC("(string/find patt str)\n\n"
-             "Searches for all instances of pattern patt in string "
-             "str. Returns an array of all indices of found patterns. Overlapping "
-             "instances of the pattern are not counted, meaning a byte in string "
-             "will only contribute to finding at most on occurrence of pattern. If no "
-             "occurrences are found, will return an empty array.")
-    },
-    {
-        "string/has-prefix?", cfun_string_hasprefix,
-        JDOC("(string/has-prefix? pfx str)\n\n"
-             "Tests whether str starts with pfx.")
-    },
-    {
-        "string/has-suffix?", cfun_string_hassuffix,
-        JDOC("(string/has-suffix? sfx str)\n\n"
-             "Tests whether str ends with sfx.")
-    },
-    {
-        "string/replace", cfun_string_replace,
-        JDOC("(string/replace patt subst str)\n\n"
-             "Replace the first occurrence of patt with subst in the string str. "
-             "Will return the new string if patt is found, otherwise returns str.")
-    },
-    {
-        "string/replace-all", cfun_string_replaceall,
-        JDOC("(string/replace-all patt subst str)\n\n"
-             "Replace all instances of patt with subst in the string str. "
-             "Will return the new string if patt is found, otherwise returns str.")
-    },
-    {
-        "string/split", cfun_string_split,
-        JDOC("(string/split delim str)\n\n"
-             "Splits a string str with delimiter delim and returns an array of "
-             "substrings. The substrings will not contain the delimiter delim. If delim "
-             "is not found, the returned array will have one element.")
-    },
-    {
-        "string/check-set", cfun_string_checkset,
-        JDOC("(string/check-set set str)\n\n"
-             "Checks if any of the bytes in the string set appear in the string str. "
-             "Returns true if some bytes in set do appear in str, false if no bytes do.")
-    },
-    {
-        "string/join", cfun_string_join,
-        JDOC("(string/join parts [,sep])\n\n"
-             "Joins an array of strings into one string, optionally separated by "
-             "a separator string sep.")
-    },
-    {
-        "string/format", cfun_string_format,
-        JDOC("(string/format format & values)\n\n"
-             "Similar to snprintf, but specialized for operating with janet. Returns "
-             "a new string.")
-    },
-    {
-        "string/trim", cfun_string_trim,
-        JDOC("(string/trim str [,set])\n\n"
-             "Trim leading and trailing whitespace from a byte sequence. If the argument "
-             "set is provided, consider only characters in set to be whitespace.")
-    },
-    {
-        "string/triml", cfun_string_triml,
-        JDOC("(string/triml str [,set])\n\n"
-             "Trim leading whitespace from a byte sequence. If the argument "
-             "set is provided, consider only characters in set to be whitespace.")
-    },
-    {
-        "string/trimr", cfun_string_trimr,
-        JDOC("(string/trimr str [,set])\n\n"
-             "Trim trailing whitespace from a byte sequence. If the argument "
-             "set is provided, consider only characters in set to be whitespace.")
-    },
-    {NULL, NULL, NULL}
-};
-
 /* Module entry point */
 void janet_lib_string(JanetTable *env) {
-    janet_core_cfuns(env, NULL, string_cfuns);
+    JanetRegExt string_cfuns[] = {
+        JANET_CORE_REG("string/slice", cfun_string_slice),
+        JANET_CORE_REG("keyword/slice", cfun_keyword_slice),
+        JANET_CORE_REG("symbol/slice", cfun_symbol_slice),
+        JANET_CORE_REG("string/repeat", cfun_string_repeat),
+        JANET_CORE_REG("string/bytes", cfun_string_bytes),
+        JANET_CORE_REG("string/from-bytes", cfun_string_frombytes),
+        JANET_CORE_REG("string/ascii-lower", cfun_string_asciilower),
+        JANET_CORE_REG("string/ascii-upper", cfun_string_asciiupper),
+        JANET_CORE_REG("string/reverse", cfun_string_reverse),
+        JANET_CORE_REG("string/find", cfun_string_find),
+        JANET_CORE_REG("string/find-all", cfun_string_findall),
+        JANET_CORE_REG("string/has-prefix?", cfun_string_hasprefix),
+        JANET_CORE_REG("string/has-suffix?", cfun_string_hassuffix),
+        JANET_CORE_REG("string/replace", cfun_string_replace),
+        JANET_CORE_REG("string/replace-all", cfun_string_replaceall),
+        JANET_CORE_REG("string/split", cfun_string_split),
+        JANET_CORE_REG("string/check-set", cfun_string_checkset),
+        JANET_CORE_REG("string/join", cfun_string_join),
+        JANET_CORE_REG("string/format", cfun_string_format),
+        JANET_CORE_REG("string/trim", cfun_string_trim),
+        JANET_CORE_REG("string/triml", cfun_string_triml),
+        JANET_CORE_REG("string/trimr", cfun_string_trimr),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, string_cfuns);
 }

src/core/strtod.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -40,14 +40,15 @@
  * '0xdeadbeef'.
  */
 
-#include <math.h>
-#include <string.h>
-
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "util.h"
 #endif
 
+#include <math.h>
+#include <string.h>
+
 /* Lookup table for getting values of characters when parsing numbers. Handles
  * digits 0-9 and a-z (and A-Z). A-Z have values of 10 to 35. */
 static uint8_t digit_lookup[128] = {
@@ -86,7 +87,7 @@ static uint32_t *bignat_extra(struct BigNat *mant, int32_t n) {
     int32_t newn = oldn + n;
     if (mant->cap < newn) {
         int32_t newcap = 2 * newn;
-        uint32_t *mem = realloc(mant->digits, newcap * sizeof(uint32_t));
+        uint32_t *mem = janet_realloc(mant->digits, (size_t) newcap * sizeof(uint32_t));
         if (NULL == mem) {
             JANET_OUT_OF_MEMORY;
         }
@@ -196,7 +197,7 @@ static double bignat_extract(struct BigNat *mant, int32_t exponent2) {
 
 /* Read in a mantissa and exponent of a certain base, and give
  * back the double value. Should properly handle 0s, infinities, and
- * denormalized numbers. (When the exponent values are too large) */
+ * denormalized numbers. (When the exponent values are too large or small) */
 static double convert(
     int negative,
     struct BigNat *mant,
@@ -205,11 +206,20 @@ static double convert(
 
     int32_t exponent2 = 0;
 
-    /* Short circuit zero and huge numbers */
+    /* Approximate exponent in base 2 of mant and exponent. This should get us a good estimate of the final size of the
+     * number, within * 2^32 or so. */
+    int64_t mant_exp2_approx = mant->n * 32 + 16;
+    int64_t exp_exp2_approx = (int64_t)(floor(log2(base) * exponent));
+    int64_t exp2_approx = mant_exp2_approx + exp_exp2_approx;
+
+    /* Short circuit zero, huge, and small numbers. We use the exponent range of valid IEEE754 doubles (-1022, 1023)
+     * with a healthy buffer to allow for inaccuracies in the approximation and denormailzed numbers. */
     if (mant->n == 0 && mant->first_digit == 0)
         return negative ? -0.0 : 0.0;
-    if (exponent > 1023)
+    if (exp2_approx > 1176)
         return negative ? -INFINITY : INFINITY;
+    if (exp2_approx < -1175)
+        return negative ? -0.0 : 0.0;
 
     /* Final value is X = mant * base ^ exponent * 2 ^ exponent2
      * Get exponent to zero while holding X constant. */
@@ -236,15 +246,15 @@ static double convert(
 }
 
 /* Scan a real (double) from a string. If the string cannot be converted into
- * and integer, set *err to 1 and return 0. */
-int janet_scan_number(
+ * and integer, return 0. */
+int janet_scan_number_base(
     const uint8_t *str,
     int32_t len,
+    int32_t base,
     double *out) {
     const uint8_t *end = str + len;
     int seenadigit = 0;
     int ex = 0;
-    int base = 10;
     int seenpoint = 0;
     int foundexp = 0;
     int neg = 0;
@@ -268,21 +278,28 @@ int janet_scan_number(
     }
 
     /* Check for leading 0x or digit digit r */
-    if (str + 1 < end && str[0] == '0' && str[1] == 'x') {
-        base = 16;
-        str += 2;
-    } else if (str + 1 < end  &&
-               str[0] >= '0' && str[0] <= '9' &&
-               str[1] == 'r') {
-        base = str[0] - '0';
-        str += 2;
-    } else if (str + 2 < end  &&
-               str[0] >= '0' && str[0] <= '9' &&
-               str[1] >= '0' && str[1] <= '9' &&
-               str[2] == 'r') {
-        base = 10 * (str[0] - '0') + (str[1] - '0');
-        if (base < 2 || base > 36) goto error;
-        str += 3;
+    if (base == 0) {
+        if (str + 1 < end && str[0] == '0' && str[1] == 'x') {
+            base = 16;
+            str += 2;
+        } else if (str + 1 < end  &&
+                   str[0] >= '0' && str[0] <= '9' &&
+                   str[1] == 'r') {
+            base = str[0] - '0';
+            str += 2;
+        } else if (str + 2 < end  &&
+                   str[0] >= '0' && str[0] <= '9' &&
+                   str[1] >= '0' && str[1] <= '9' &&
+                   str[2] == 'r') {
+            base = 10 * (str[0] - '0') + (str[1] - '0');
+            if (base < 2 || base > 36) goto error;
+            str += 3;
+        }
+    }
+
+    /* If still base is 0, set to default (10) */
+    if (base == 0) {
+        base = 10;
     }
 
     /* Skip leading zeros */
@@ -326,7 +343,7 @@ int janet_scan_number(
     /* Read exponent */
     if (str < end && foundexp) {
         int eneg = 0;
-        int ee = 0;
+        int32_t ee = 0;
         seenadigit = 0;
         str++;
         if (str >= end) goto error;
@@ -341,10 +358,12 @@ int janet_scan_number(
             str++;
             seenadigit = 1;
         }
-        while (str < end && ee < (INT32_MAX / 40)) {
+        while (str < end) {
             int digit = digit_lookup[*str & 0x7F];
             if (*str > 127 || digit >= base) goto error;
-            ee = base * ee + digit;
+            if (ee < (INT32_MAX / 40)) {
+                ee = base * ee + digit;
+            }
             str++;
             seenadigit = 1;
         }
@@ -356,14 +375,21 @@ int janet_scan_number(
         goto error;
 
     *out = convert(neg, &mant, base, ex);
-    free(mant.digits);
+    janet_free(mant.digits);
     return 0;
 
 error:
-    free(mant.digits);
+    janet_free(mant.digits);
     return 1;
 }
 
+int janet_scan_number(
+    const uint8_t *str,
+    int32_t len,
+    double *out) {
+    return janet_scan_number_base(str, len, 0, out);
+}
+
 #ifdef JANET_INT_TYPES
 
 static int scan_uint64(
@@ -435,12 +461,16 @@ int janet_scan_int64(const uint8_t *str, int32_t len, int64_t *out) {
     int neg;
     uint64_t bi;
     if (scan_uint64(str, len, &bi, &neg)) {
-        if (neg && bi <= 0x8000000000000000ULL) {
-            *out = -((int64_t) bi);
+        if (neg && bi <= ((UINT64_MAX / 2) + 1)) {
+            if (bi > INT64_MAX) {
+                *out = INT64_MIN;
+            } else {
+                *out = -((int64_t) bi);
+            }
             return 1;
         }
-        if (!neg && bi <= 0x7FFFFFFFFFFFFFFFULL) {
-            *out = bi;
+        if (!neg && bi <= INT64_MAX) {
+            *out = (int64_t) bi;
             return 1;
         }
     }

src/core/struct.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,6 +21,7 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "gc.h"
 #include "util.h"
@@ -33,18 +34,19 @@ JanetKV *janet_struct_begin(int32_t count) {
     int32_t capacity = janet_tablen(2 * count);
     if (capacity < 0) capacity = janet_tablen(count + 1);
 
-    size_t size = sizeof(JanetStructHead) + capacity * sizeof(JanetKV);
+    size_t size = sizeof(JanetStructHead) + (size_t) capacity * sizeof(JanetKV);
     JanetStructHead *head = janet_gcalloc(JANET_MEMORY_STRUCT, size);
     head->length = count;
     head->capacity = capacity;
     head->hash = 0;
+    head->proto = NULL;
 
     JanetKV *st = (JanetKV *)(head->data);
     janet_memempty(st, capacity);
     return st;
 }
 
-/* Find an item in a struct. Should be similar to janet_dict_find, but
+/* Find an item in a struct without looking for prototypes. Should be similar to janet_dict_find, but
  * specialized to structs (slightly more compact). */
 const JanetKV *janet_struct_find(const JanetKV *st, Janet key) {
     int32_t cap = janet_struct_capacity(st);
@@ -67,7 +69,7 @@ const JanetKV *janet_struct_find(const JanetKV *st, Janet key) {
  * preforms an in-place insertion sort. This ensures the internal structure of the
  * hash map is independent of insertion order.
  */
-void janet_struct_put(JanetKV *st, Janet key, Janet value) {
+void janet_struct_put_ext(JanetKV *st, Janet key, Janet value, int replace) {
     int32_t cap = janet_struct_capacity(st);
     int32_t hash = janet_hash(key);
     int32_t index = janet_maphash(cap, hash);
@@ -122,12 +124,19 @@ void janet_struct_put(JanetKV *st, Janet key, Janet value) {
                 dist = otherdist;
                 hash = otherhash;
             } else if (status == 0) {
-                /* A key was added to the struct more than once */
+                if (replace) {
+                    /* A key was added to the struct more than once - replace old value */
+                    kv->value = value;
+                }
                 return;
             }
         }
 }
 
+void janet_struct_put(JanetKV *st, Janet key, Janet value) {
+    janet_struct_put_ext(st, key, value, 1);
+}
+
 /* Finish building a struct */
 const JanetKV *janet_struct_end(JanetKV *st) {
     if (janet_struct_hash(st) != janet_struct_length(st)) {
@@ -141,16 +150,43 @@ const JanetKV *janet_struct_end(JanetKV *st) {
                 janet_struct_put(newst, kv->key, kv->value);
             }
         }
+        janet_struct_proto(newst) = janet_struct_proto(st);
         st = newst;
     }
     janet_struct_hash(st) = janet_kv_calchash(st, janet_struct_capacity(st));
+    if (janet_struct_proto(st)) {
+        janet_struct_hash(st) += 2654435761u * janet_struct_hash(janet_struct_proto(st));
+    }
     return (const JanetKV *)st;
 }
 
+/* Get an item from a struct without looking into prototypes. */
+Janet janet_struct_rawget(const JanetKV *st, Janet key) {
+    const JanetKV *kv = janet_struct_find(st, key);
+    return kv ? kv->value : janet_wrap_nil();
+}
+
 /* Get an item from a struct */
 Janet janet_struct_get(const JanetKV *st, Janet key) {
-    const JanetKV *kv = janet_struct_find(st, key);
-    return kv ? kv->value : janet_wrap_nil();
+    for (int i = JANET_MAX_PROTO_DEPTH; st && i; --i, st = janet_struct_proto(st)) {
+        const JanetKV *kv = janet_struct_find(st, key);
+        if (NULL != kv && !janet_checktype(kv->key, JANET_NIL)) {
+            return kv->value;
+        }
+    }
+    return janet_wrap_nil();
+}
+
+/* Get an item from a struct, and record which prototype the item came from. */
+Janet janet_struct_get_ex(const JanetKV *st, Janet key, JanetStruct *which) {
+    for (int i = JANET_MAX_PROTO_DEPTH; st && i; --i, st = janet_struct_proto(st)) {
+        const JanetKV *kv = janet_struct_find(st, key);
+        if (NULL != kv && !janet_checktype(kv->key, JANET_NIL)) {
+            *which = st;
+            return kv->value;
+        }
+    }
+    return janet_wrap_nil();
 }
 
 /* Convert struct to table */
@@ -166,50 +202,106 @@ JanetTable *janet_struct_to_table(const JanetKV *st) {
     return table;
 }
 
-/* Check if two structs are equal */
-int janet_struct_equal(const JanetKV *lhs, const JanetKV *rhs) {
-    int32_t index;
-    int32_t llen = janet_struct_capacity(lhs);
-    int32_t rlen = janet_struct_capacity(rhs);
-    int32_t lhash = janet_struct_hash(lhs);
-    int32_t rhash = janet_struct_hash(rhs);
-    if (llen != rlen)
-        return 0;
-    if (lhash != rhash)
-        return 0;
-    for (index = 0; index < llen; index++) {
-        const JanetKV *l = lhs + index;
-        const JanetKV *r = rhs + index;
-        if (!janet_equals(l->key, r->key))
-            return 0;
-        if (!janet_equals(l->value, r->value))
-            return 0;
+/* C Functions */
+
+JANET_CORE_FN(cfun_struct_with_proto,
+              "(struct/with-proto proto & kvs)",
+              "Create a structure, as with the usual struct constructor but set the "
+              "struct prototype as well.") {
+    janet_arity(argc, 1, -1);
+    JanetStruct proto = janet_optstruct(argv, argc, 0, NULL);
+    if (!(argc & 1))
+        janet_panic("expected odd number of arguments");
+    JanetKV *st = janet_struct_begin(argc / 2);
+    for (int32_t i = 1; i < argc; i += 2) {
+        janet_struct_put(st, argv[i], argv[i + 1]);
     }
-    return 1;
+    janet_struct_proto(st) = proto;
+    return janet_wrap_struct(janet_struct_end(st));
 }
 
-/* Compare structs */
-int janet_struct_compare(const JanetKV *lhs, const JanetKV *rhs) {
-    int32_t i;
-    int32_t lhash = janet_struct_hash(lhs);
-    int32_t rhash = janet_struct_hash(rhs);
-    int32_t llen = janet_struct_capacity(lhs);
-    int32_t rlen = janet_struct_capacity(rhs);
-    if (llen < rlen)
-        return -1;
-    if (llen > rlen)
-        return 1;
-    if (lhash < rhash)
-        return -1;
-    if (lhash > rhash)
-        return 1;
-    for (i = 0; i < llen; ++i) {
-        const JanetKV *l = lhs + i;
-        const JanetKV *r = rhs + i;
-        int comp = janet_compare(l->key, r->key);
-        if (comp != 0) return comp;
-        comp = janet_compare(l->value, r->value);
-        if (comp != 0) return comp;
-    }
-    return 0;
+JANET_CORE_FN(cfun_struct_getproto,
+              "(struct/getproto st)",
+              "Return the prototype of a struct, or nil if it doesn't have one.") {
+    janet_fixarity(argc, 1);
+    JanetStruct st = janet_getstruct(argv, 0);
+    return janet_struct_proto(st)
+           ? janet_wrap_struct(janet_struct_proto(st))
+           : janet_wrap_nil();
+}
+
+JANET_CORE_FN(cfun_struct_flatten,
+              "(struct/proto-flatten st)",
+              "Convert a struct with prototypes to a struct with no prototypes by merging "
+              "all key value pairs from recursive prototypes into one new struct.") {
+    janet_fixarity(argc, 1);
+    JanetStruct st = janet_getstruct(argv, 0);
+
+    /* get an upper bounds on the number of items in the final struct */
+    int64_t pair_count = 0;
+    JanetStruct cursor = st;
+    while (cursor) {
+        pair_count += janet_struct_length(cursor);
+        cursor = janet_struct_proto(cursor);
+    }
+
+    if (pair_count > INT32_MAX) {
+        janet_panic("struct too large");
+    }
+
+    JanetKV *accum = janet_struct_begin((int32_t) pair_count);
+    cursor = st;
+    while (cursor) {
+        for (int32_t i = 0; i < janet_struct_capacity(cursor); i++) {
+            const JanetKV *kv = cursor + i;
+            if (!janet_checktype(kv->key, JANET_NIL)) {
+                janet_struct_put_ext(accum, kv->key, kv->value, 0);
+            }
+        }
+        cursor = janet_struct_proto(cursor);
+    }
+    return janet_wrap_struct(janet_struct_end(accum));
+}
+
+JANET_CORE_FN(cfun_struct_to_table,
+              "(struct/to-table st &opt recursive)",
+              "Convert a struct to a table. If recursive is true, also convert the "
+              "table's prototypes into the new struct's prototypes as well.") {
+    janet_arity(argc, 1, 2);
+    JanetStruct st = janet_getstruct(argv, 0);
+    int recursive = argc > 1 && janet_truthy(argv[1]);
+    JanetTable *tab = NULL;
+    JanetStruct cursor = st;
+    JanetTable *tab_cursor = tab;
+    do {
+        if (tab) {
+            tab_cursor->proto = janet_table(janet_struct_length(cursor));
+            tab_cursor = tab_cursor->proto;
+        } else {
+            tab = janet_table(janet_struct_length(cursor));
+            tab_cursor = tab;
+        }
+        /* TODO - implement as memcpy since struct memory should be compatible
+         * with table memory */
+        for (int32_t i = 0; i < janet_struct_capacity(cursor); i++) {
+            const JanetKV *kv = cursor + i;
+            if (!janet_checktype(kv->key, JANET_NIL)) {
+                janet_table_put(tab_cursor, kv->key, kv->value);
+            }
+        }
+        cursor = janet_struct_proto(cursor);
+    } while (recursive && cursor);
+    return janet_wrap_table(tab);
+}
+
+/* Load the struct module */
+void janet_lib_struct(JanetTable *env) {
+    JanetRegExt struct_cfuns[] = {
+        JANET_CORE_REG("struct/with-proto", cfun_struct_with_proto),
+        JANET_CORE_REG("struct/getproto", cfun_struct_getproto),
+        JANET_CORE_REG("struct/proto-flatten", cfun_struct_flatten),
+        JANET_CORE_REG("struct/to-table", cfun_struct_to_table),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, struct_cfuns);
 }

src/core/symcache.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -25,9 +25,8 @@
  * checks, all symbols are interned so that there is a single copy of it in the
  * whole program. Equality is then just a pointer check. */
 
-#include <string.h>
-
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "state.h"
 #include "gc.h"
@@ -35,30 +34,28 @@
 #include "symcache.h"
 #endif
 
-/* Cache state */
-JANET_THREAD_LOCAL const uint8_t **janet_vm_cache = NULL;
-JANET_THREAD_LOCAL uint32_t janet_vm_cache_capacity = 0;
-JANET_THREAD_LOCAL uint32_t janet_vm_cache_count = 0;
-JANET_THREAD_LOCAL uint32_t janet_vm_cache_deleted = 0;
+#include <string.h>
 
 /* Initialize the cache (allocate cache memory) */
 void janet_symcache_init() {
-    janet_vm_cache_capacity = 1024;
-    janet_vm_cache = calloc(1, janet_vm_cache_capacity * sizeof(const uint8_t *));
-    if (NULL == janet_vm_cache) {
+    janet_vm.cache_capacity = 1024;
+    janet_vm.cache = janet_calloc(1, (size_t) janet_vm.cache_capacity * sizeof(const uint8_t *));
+    if (NULL == janet_vm.cache) {
         JANET_OUT_OF_MEMORY;
     }
-    janet_vm_cache_count = 0;
-    janet_vm_cache_deleted = 0;
+    memset(&janet_vm.gensym_counter, '0', sizeof(janet_vm.gensym_counter));
+    janet_vm.gensym_counter[0] = '_';
+    janet_vm.cache_count = 0;
+    janet_vm.cache_deleted = 0;
 }
 
 /* Deinitialize the cache (free the cache memory) */
 void janet_symcache_deinit() {
-    free((void *)janet_vm_cache);
-    janet_vm_cache = NULL;
-    janet_vm_cache_capacity = 0;
-    janet_vm_cache_count = 0;
-    janet_vm_cache_deleted = 0;
+    janet_free((void *)janet_vm.cache);
+    janet_vm.cache = NULL;
+    janet_vm.cache_capacity = 0;
+    janet_vm.cache_count = 0;
+    janet_vm.cache_deleted = 0;
 }
 
 /* Mark an entry in the table as deleted. */
@@ -78,24 +75,24 @@ static const uint8_t **janet_symcache_findmem(
 
     /* We will search two ranges - index to the end,
      * and 0 to the index. */
-    index = (uint32_t)hash & (janet_vm_cache_capacity - 1);
+    index = (uint32_t)hash & (janet_vm.cache_capacity - 1);
     bounds[0] = index;
-    bounds[1] = janet_vm_cache_capacity;
+    bounds[1] = janet_vm.cache_capacity;
     bounds[2] = 0;
     bounds[3] = index;
     for (j = 0; j < 4; j += 2)
         for (i = bounds[j]; i < bounds[j + 1]; ++i) {
-            const uint8_t *test = janet_vm_cache[i];
+            const uint8_t *test = janet_vm.cache[i];
             /* Check empty spots */
             if (NULL == test) {
                 if (NULL == firstEmpty)
-                    firstEmpty = janet_vm_cache + i;
+                    firstEmpty = janet_vm.cache + i;
                 goto notfound;
             }
             /* Check for marked deleted */
             if (JANET_SYMCACHE_DELETED == test) {
                 if (firstEmpty == NULL)
-                    firstEmpty = janet_vm_cache + i;
+                    firstEmpty = janet_vm.cache + i;
                 continue;
             }
             if (janet_string_equalconst(test, str, len, hash)) {
@@ -103,10 +100,10 @@ static const uint8_t **janet_symcache_findmem(
                 *success = 1;
                 if (firstEmpty != NULL) {
                     *firstEmpty = test;
-                    janet_vm_cache[i] = JANET_SYMCACHE_DELETED;
+                    janet_vm.cache[i] = JANET_SYMCACHE_DELETED;
                     return firstEmpty;
                 }
-                return janet_vm_cache + i;
+                return janet_vm.cache + i;
             }
         }
 notfound:
@@ -120,15 +117,15 @@ notfound:
 /* Resize the cache. */
 static void janet_cache_resize(uint32_t newCapacity) {
     uint32_t i, oldCapacity;
-    const uint8_t **oldCache = janet_vm_cache;
-    const uint8_t **newCache = calloc(1, newCapacity * sizeof(const uint8_t *));
+    const uint8_t **oldCache = janet_vm.cache;
+    const uint8_t **newCache = janet_calloc(1, (size_t) newCapacity * sizeof(const uint8_t *));
     if (newCache == NULL) {
         JANET_OUT_OF_MEMORY;
     }
-    oldCapacity = janet_vm_cache_capacity;
-    janet_vm_cache = newCache;
-    janet_vm_cache_capacity = newCapacity;
-    janet_vm_cache_deleted = 0;
+    oldCapacity = janet_vm.cache_capacity;
+    janet_vm.cache = newCache;
+    janet_vm.cache_capacity = newCapacity;
+    janet_vm.cache_deleted = 0;
     /* Add all of the old cache entries back */
     for (i = 0; i < oldCapacity; ++i) {
         int status;
@@ -144,18 +141,18 @@ static void janet_cache_resize(uint32_t newCapacity) {
         }
     }
     /* Free the old cache */
-    free((void *)oldCache);
+    janet_free((void *)oldCache);
 }
 
 /* Add an item to the cache */
 static void janet_symcache_put(const uint8_t *x, const uint8_t **bucket) {
-    if ((janet_vm_cache_count + janet_vm_cache_deleted) * 2 > janet_vm_cache_capacity) {
+    if ((janet_vm.cache_count + janet_vm.cache_deleted) * 2 > janet_vm.cache_capacity) {
         int status;
-        janet_cache_resize(janet_tablen((2 * janet_vm_cache_count + 1)));
+        janet_cache_resize(janet_tablen((2 * janet_vm.cache_count + 1)));
         bucket = janet_symcache_find(x, &status);
     }
     /* Add x to the cache */
-    janet_vm_cache_count++;
+    janet_vm.cache_count++;
     *bucket = x;
 }
 
@@ -164,8 +161,8 @@ void janet_symbol_deinit(const uint8_t *sym) {
     int status = 0;
     const uint8_t **bucket = janet_symcache_find(sym, &status);
     if (status) {
-        janet_vm_cache_count--;
-        janet_vm_cache_deleted++;
+        janet_vm.cache_count--;
+        janet_vm.cache_deleted++;
         *bucket = JANET_SYMCACHE_DELETED;
     }
 }
@@ -178,11 +175,11 @@ const uint8_t *janet_symbol(const uint8_t *str, int32_t len) {
     const uint8_t **bucket = janet_symcache_findmem(str, len, hash, &success);
     if (success)
         return *bucket;
-    JanetStringHead *head = janet_gcalloc(JANET_MEMORY_SYMBOL, sizeof(JanetStringHead) + len + 1);
+    JanetStringHead *head = janet_gcalloc(JANET_MEMORY_SYMBOL, sizeof(JanetStringHead) + (size_t) len + 1);
     head->hash = hash;
     head->length = len;
     newstr = (uint8_t *)(head->data);
-    memcpy(newstr, str, len);
+    safe_memcpy(newstr, str, len);
     newstr[len] = 0;
     janet_symcache_put((const uint8_t *)newstr, bucket);
     return newstr;
@@ -193,22 +190,19 @@ const uint8_t *janet_csymbol(const char *cstr) {
     return janet_symbol((const uint8_t *)cstr, (int32_t) strlen(cstr));
 }
 
-/* Store counter for genysm to avoid quadratic behavior */
-JANET_THREAD_LOCAL uint8_t gensym_counter[8] = {'_', '0', '0', '0', '0', '0', '0', 0};
-
 /* Increment the gensym buffer */
 static void inc_gensym(void) {
-    for (int i = sizeof(gensym_counter) - 2; i; i--) {
-        if (gensym_counter[i] == '9') {
-            gensym_counter[i] = 'a';
+    for (int i = sizeof(janet_vm.gensym_counter) - 2; i; i--) {
+        if (janet_vm.gensym_counter[i] == '9') {
+            janet_vm.gensym_counter[i] = 'a';
             break;
-        } else if (gensym_counter[i] == 'z') {
-            gensym_counter[i] = 'A';
+        } else if (janet_vm.gensym_counter[i] == 'z') {
+            janet_vm.gensym_counter[i] = 'A';
             break;
-        } else if (gensym_counter[i] == 'Z') {
-            gensym_counter[i] = '0';
+        } else if (janet_vm.gensym_counter[i] == 'Z') {
+            janet_vm.gensym_counter[i] = '0';
         } else {
-            gensym_counter[i]++;
+            janet_vm.gensym_counter[i]++;
             break;
         }
     }
@@ -226,19 +220,19 @@ const uint8_t *janet_symbol_gen(void) {
      * is enough for resolving collisions. */
     do {
         hash = janet_string_calchash(
-                   gensym_counter,
-                   sizeof(gensym_counter) - 1);
+                   janet_vm.gensym_counter,
+                   sizeof(janet_vm.gensym_counter) - 1);
         bucket = janet_symcache_findmem(
-                     gensym_counter,
-                     sizeof(gensym_counter) - 1,
+                     janet_vm.gensym_counter,
+                     sizeof(janet_vm.gensym_counter) - 1,
                      hash,
                      &status);
     } while (status && (inc_gensym(), 1));
-    JanetStringHead *head = janet_gcalloc(JANET_MEMORY_SYMBOL, sizeof(JanetStringHead) + sizeof(gensym_counter));
-    head->length = sizeof(gensym_counter) - 1;
+    JanetStringHead *head = janet_gcalloc(JANET_MEMORY_SYMBOL, sizeof(JanetStringHead) + sizeof(janet_vm.gensym_counter));
+    head->length = sizeof(janet_vm.gensym_counter) - 1;
     head->hash = hash;
     sym = (uint8_t *)(head->data);
-    memcpy(sym, gensym_counter, sizeof(gensym_counter));
+    memcpy(sym, janet_vm.gensym_counter, sizeof(janet_vm.gensym_counter));
     janet_symcache_put((const uint8_t *)sym, bucket);
     return (const uint8_t *)sym;
 }

src/core/symcache.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -24,6 +24,7 @@
 #define JANET_SYMCACHE_H_defined
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #endif
 

src/core/table.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,20 +21,39 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "gc.h"
 #include "util.h"
 #include <math.h>
 #endif
 
-/* Initialize a table */
-JanetTable *janet_table_init(JanetTable *table, int32_t capacity) {
+#define JANET_TABLE_FLAG_STACK 0x10000
+
+static void *janet_memalloc_empty_local(int32_t count) {
+    int32_t i;
+    void *mem = janet_smalloc((size_t) count * sizeof(JanetKV));
+    JanetKV *mmem = (JanetKV *)mem;
+    for (i = 0; i < count; i++) {
+        JanetKV *kv = mmem + i;
+        kv->key = janet_wrap_nil();
+        kv->value = janet_wrap_nil();
+    }
+    return mem;
+}
+
+static JanetTable *janet_table_init_impl(JanetTable *table, int32_t capacity, int stackalloc) {
     JanetKV *data;
     capacity = janet_tablen(capacity);
+    if (stackalloc) table->gc.flags = JANET_TABLE_FLAG_STACK;
     if (capacity) {
-        data = (JanetKV *) janet_memalloc_empty(capacity);
-        if (NULL == data) {
-            JANET_OUT_OF_MEMORY;
+        if (stackalloc) {
+            data = janet_memalloc_empty_local(capacity);
+        } else {
+            data = (JanetKV *) janet_memalloc_empty(capacity);
+            if (NULL == data) {
+                JANET_OUT_OF_MEMORY;
+            }
         }
         table->data = data;
         table->capacity = capacity;
@@ -48,15 +67,29 @@ JanetTable *janet_table_init(JanetTable *table, int32_t capacity) {
     return table;
 }
 
+/* Initialize a table (for use withs scratch memory) */
+JanetTable *janet_table_init(JanetTable *table, int32_t capacity) {
+    return janet_table_init_impl(table, capacity, 1);
+}
+
+/* Initialize a table without using scratch memory */
+JanetTable *janet_table_init_raw(JanetTable *table, int32_t capacity) {
+    return janet_table_init_impl(table, capacity, 0);
+}
+
 /* Deinitialize a table */
 void janet_table_deinit(JanetTable *table) {
-    free(table->data);
+    if (table->gc.flags & JANET_TABLE_FLAG_STACK) {
+        janet_sfree(table->data);
+    } else {
+        janet_free(table->data);
+    }
 }
 
 /* Create a new table */
 JanetTable *janet_table(int32_t capacity) {
     JanetTable *table = janet_gcalloc(JANET_MEMORY_TABLE, sizeof(JanetTable));
-    return janet_table_init(table, capacity);
+    return janet_table_init_impl(table, capacity, 0);
 }
 
 /* Find the bucket that contains the given key. Will also return
@@ -68,9 +101,15 @@ JanetKV *janet_table_find(JanetTable *t, Janet key) {
 /* Resize the dictionary table. */
 static void janet_table_rehash(JanetTable *t, int32_t size) {
     JanetKV *olddata = t->data;
-    JanetKV *newdata = (JanetKV *) janet_memalloc_empty(size);
-    if (NULL == newdata) {
-        JANET_OUT_OF_MEMORY;
+    JanetKV *newdata;
+    int islocal = t->gc.flags & JANET_TABLE_FLAG_STACK;
+    if (islocal) {
+        newdata = (JanetKV *) janet_memalloc_empty_local(size);
+    } else {
+        newdata = (JanetKV *) janet_memalloc_empty(size);
+        if (NULL == newdata) {
+            JANET_OUT_OF_MEMORY;
+        }
     }
     int32_t i, oldcapacity;
     oldcapacity = t->capacity;
@@ -84,21 +123,30 @@ static void janet_table_rehash(JanetTable *t, int32_t size) {
             *newkv = *kv;
         }
     }
-    free(olddata);
+    if (islocal) {
+        janet_sfree(olddata);
+    } else {
+        janet_free(olddata);
+    }
 }
 
 /* Get a value out of the table */
 Janet janet_table_get(JanetTable *t, Janet key) {
-    JanetKV *bucket = janet_table_find(t, key);
-    if (NULL != bucket && !janet_checktype(bucket->key, JANET_NIL))
-        return bucket->value;
-    /* Check prototypes */
-    {
-        int i;
-        for (i = JANET_MAX_PROTO_DEPTH, t = t->proto; t && i; t = t->proto, --i) {
-            bucket = janet_table_find(t, key);
-            if (NULL != bucket && !janet_checktype(bucket->key, JANET_NIL))
-                return bucket->value;
+    for (int i = JANET_MAX_PROTO_DEPTH; t && i; t = t->proto, --i) {
+        JanetKV *bucket = janet_table_find(t, key);
+        if (NULL != bucket && !janet_checktype(bucket->key, JANET_NIL))
+            return bucket->value;
+    }
+    return janet_wrap_nil();
+}
+
+/* Get a value out of the table, and record which prototype it was from. */
+Janet janet_table_get_ex(JanetTable *t, Janet key, JanetTable **which) {
+    for (int i = JANET_MAX_PROTO_DEPTH; t && i; t = t->proto, --i) {
+        JanetKV *bucket = janet_table_find(t, key);
+        if (NULL != bucket && !janet_checktype(bucket->key, JANET_NIL)) {
+            *which = t;
+            return bucket->value;
         }
     }
     return janet_wrap_nil();
@@ -118,7 +166,7 @@ Janet janet_table_rawget(JanetTable *t, Janet key) {
 Janet janet_table_remove(JanetTable *t, Janet key) {
     JanetKV *bucket = janet_table_find(t, key);
     if (NULL != bucket && !janet_checktype(bucket->key, JANET_NIL)) {
-        Janet ret = bucket->key;
+        Janet ret = bucket->value;
         t->count--;
         t->deleted++;
         bucket->key = janet_wrap_nil();
@@ -153,6 +201,23 @@ void janet_table_put(JanetTable *t, Janet key, Janet value) {
     }
 }
 
+/* Used internally so don't check arguments
+ * Put into a table, but if the key already exists do nothing. */
+static void janet_table_put_no_overwrite(JanetTable *t, Janet key, Janet value) {
+    JanetKV *bucket = janet_table_find(t, key);
+    if (NULL != bucket && !janet_checktype(bucket->key, JANET_NIL))
+        return;
+    if (NULL == bucket || 2 * (t->count + t->deleted + 1) > t->capacity) {
+        janet_table_rehash(t, janet_tablen(2 * t->count + 2));
+    }
+    bucket = janet_table_find(t, key);
+    if (janet_checktype(bucket->value, JANET_BOOLEAN))
+        --t->deleted;
+    bucket->key = key;
+    bucket->value = value;
+    ++t->count;
+}
+
 /* Clear a table */
 void janet_table_clear(JanetTable *t) {
     int32_t capacity = t->capacity;
@@ -162,6 +227,42 @@ void janet_table_clear(JanetTable *t) {
     t->deleted = 0;
 }
 
+/* Clone a table. */
+JanetTable *janet_table_clone(JanetTable *table) {
+    JanetTable *newTable = janet_gcalloc(JANET_MEMORY_TABLE, sizeof(JanetTable));
+    newTable->count = table->count;
+    newTable->capacity = table->capacity;
+    newTable->deleted = table->deleted;
+    newTable->proto = table->proto;
+    newTable->data = janet_malloc(newTable->capacity * sizeof(JanetKV));
+    if (NULL == newTable->data) {
+        JANET_OUT_OF_MEMORY;
+    }
+    memcpy(newTable->data, table->data, (size_t) table->capacity * sizeof(JanetKV));
+    return newTable;
+}
+
+/* Merge a table or struct into a table */
+static void janet_table_mergekv(JanetTable *table, const JanetKV *kvs, int32_t cap) {
+    int32_t i;
+    for (i = 0; i < cap; i++) {
+        const JanetKV *kv = kvs + i;
+        if (!janet_checktype(kv->key, JANET_NIL)) {
+            janet_table_put(table, kv->key, kv->value);
+        }
+    }
+}
+
+/* Merge a table into another table */
+void janet_table_merge_table(JanetTable *table, JanetTable *other) {
+    janet_table_mergekv(table, other->data, other->capacity);
+}
+
+/* Merge a struct into a table */
+void janet_table_merge_struct(JanetTable *table, const JanetKV *other) {
+    janet_table_mergekv(table, other, janet_struct_capacity(other));
+}
+
 /* Convert table to struct */
 const JanetKV *janet_table_to_struct(JanetTable *t) {
     JanetKV *st = janet_struct_begin(t->count);
@@ -175,36 +276,38 @@ const JanetKV *janet_table_to_struct(JanetTable *t) {
     return janet_struct_end(st);
 }
 
-/* Merge a table or struct into a table */
-static void janet_table_mergekv(JanetTable *table, const JanetKV *kvs, int32_t cap) {
-    int32_t i;
-    for (i = 0; i < cap; i++) {
-        const JanetKV *kv = kvs + i;
-        if (!janet_checktype(kv->key, JANET_NIL)) {
-            janet_table_put(table, kv->key, kv->value);
+JanetTable *janet_table_proto_flatten(JanetTable *t) {
+    JanetTable *newTable = janet_table(0);
+    while (t) {
+        JanetKV *kv = t->data;
+        JanetKV *end = t->data + t->capacity;
+        while (kv < end) {
+            if (!janet_checktype(kv->key, JANET_NIL))
+                janet_table_put_no_overwrite(newTable, kv->key, kv->value);
+            kv++;
         }
+        t = t->proto;
     }
-}
-
-/* Merge a table other into another table */
-void janet_table_merge_table(JanetTable *table, JanetTable *other) {
-    janet_table_mergekv(table, other->data, other->capacity);
-}
-
-/* Merge a struct into a table */
-void janet_table_merge_struct(JanetTable *table, const JanetKV *other) {
-    janet_table_mergekv(table, other, janet_struct_capacity(other));
+    return newTable;
 }
 
 /* C Functions */
 
-static Janet cfun_table_new(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_table_new,
+              "(table/new capacity)",
+              "Creates a new empty table with pre-allocated memory "
+              "for capacity entries. This means that if one knows the number of "
+              "entries going to go in a table on creation, extra memory allocation "
+              "can be avoided. Returns the new table.") {
     janet_fixarity(argc, 1);
     int32_t cap = janet_getinteger(argv, 0);
     return janet_wrap_table(janet_table(cap));
 }
 
-static Janet cfun_table_getproto(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_table_getproto,
+              "(table/getproto tab)",
+              "Get the prototype table of a table. Returns nil if a table "
+              "has no prototype, otherwise returns the prototype.") {
     janet_fixarity(argc, 1);
     JanetTable *t = janet_gettable(argv, 0);
     return t->proto
@@ -212,7 +315,9 @@ static Janet cfun_table_getproto(int32_t argc, Janet *argv) {
            : janet_wrap_nil();
 }
 
-static Janet cfun_table_setproto(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_table_setproto,
+              "(table/setproto tab proto)",
+              "Set the prototype of a table. Returns the original table tab.") {
     janet_fixarity(argc, 2);
     JanetTable *table = janet_gettable(argv, 0);
     JanetTable *proto = NULL;
@@ -223,55 +328,63 @@ static Janet cfun_table_setproto(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_table_tostruct(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_table_tostruct,
+              "(table/to-struct tab)",
+              "Convert a table to a struct. Returns a new struct. This function "
+              "does not take into account prototype tables.") {
     janet_fixarity(argc, 1);
     JanetTable *t = janet_gettable(argv, 0);
     return janet_wrap_struct(janet_table_to_struct(t));
 }
 
-static Janet cfun_table_rawget(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_table_rawget,
+              "(table/rawget tab key)",
+              "Gets a value from a table without looking at the prototype table. "
+              "If a table tab does not contain t directly, the function will return "
+              "nil without checking the prototype. Returns the value in the table.") {
     janet_fixarity(argc, 2);
     JanetTable *table = janet_gettable(argv, 0);
     return janet_table_rawget(table, argv[1]);
 }
 
-static const JanetReg table_cfuns[] = {
-    {
-        "table/new", cfun_table_new,
-        JDOC("(table/new capacity)\n\n"
-             "Creates a new empty table with pre-allocated memory "
-             "for capacity entries. This means that if one knows the number of "
-             "entries going to go in a table on creation, extra memory allocation "
-             "can be avoided. Returns the new table.")
-    },
-    {
-        "table/to-struct", cfun_table_tostruct,
-        JDOC("(table/to-struct tab)\n\n"
-             "Convert a table to a struct. Returns a new struct. This function "
-             "does not take into account prototype tables.")
-    },
-    {
-        "table/getproto", cfun_table_getproto,
-        JDOC("(table/getproto tab)\n\n"
-             "Get the prototype table of a table. Returns nil if a table "
-             "has no prototype, otherwise returns the prototype.")
-    },
-    {
-        "table/setproto", cfun_table_setproto,
-        JDOC("(table/setproto tab proto)\n\n"
-             "Set the prototype of a table. Returns the original table tab.")
-    },
-    {
-        "table/rawget", cfun_table_rawget,
-        JDOC("(table/rawget tab key)\n\n"
-             "Gets a value from a table without looking at the prototype table. "
-             "If a table tab does not contain t directly, the function will return "
-             "nil without checking the prototype. Returns the value in the table.")
-    },
-    {NULL, NULL, NULL}
-};
+JANET_CORE_FN(cfun_table_clone,
+              "(table/clone tab)",
+              "Create a copy of a table. Updates to the new table will not change the old table, "
+              "and vice versa.") {
+    janet_fixarity(argc, 1);
+    JanetTable *table = janet_gettable(argv, 0);
+    return janet_wrap_table(janet_table_clone(table));
+}
+
+JANET_CORE_FN(cfun_table_clear,
+              "(table/clear tab)",
+              "Remove all key-value pairs in a table and return the modified table `tab`.") {
+    janet_fixarity(argc, 1);
+    JanetTable *table = janet_gettable(argv, 0);
+    janet_table_clear(table);
+    return janet_wrap_table(table);
+}
+
+JANET_CORE_FN(cfun_table_proto_flatten,
+              "(table/proto-flatten tab)",
+              "Create a new table that is the result of merging all prototypes into a new table.") {
+    janet_fixarity(argc, 1);
+    JanetTable *table = janet_gettable(argv, 0);
+    return janet_wrap_table(janet_table_proto_flatten(table));
+}
 
 /* Load the table module */
 void janet_lib_table(JanetTable *env) {
-    janet_core_cfuns(env, NULL, table_cfuns);
+    JanetRegExt table_cfuns[] = {
+        JANET_CORE_REG("table/new", cfun_table_new),
+        JANET_CORE_REG("table/to-struct", cfun_table_tostruct),
+        JANET_CORE_REG("table/getproto", cfun_table_getproto),
+        JANET_CORE_REG("table/setproto", cfun_table_setproto),
+        JANET_CORE_REG("table/rawget", cfun_table_rawget),
+        JANET_CORE_REG("table/clone", cfun_table_clone),
+        JANET_CORE_REG("table/clear", cfun_table_clear),
+        JANET_CORE_REG("table/proto-flatten", cfun_table_proto_flatten),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, table_cfuns);
 }

src/core/tuple.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,6 +21,7 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "symcache.h"
 #include "gc.h"
@@ -31,10 +32,10 @@
  * which should be filled with Janets. The memory will not be collected until
  * janet_tuple_end is called. */
 Janet *janet_tuple_begin(int32_t length) {
-    size_t size = sizeof(JanetTupleHead) + (length * sizeof(Janet));
+    size_t size = sizeof(JanetTupleHead) + ((size_t) length * sizeof(Janet));
     JanetTupleHead *head = janet_gcalloc(JANET_MEMORY_TUPLE, size);
-    head->sm_start = -1;
-    head->sm_end = -1;
+    head->sm_line = -1;
+    head->sm_column = -1;
     head->length = length;
     return (Janet *)(head->data);
 }
@@ -48,64 +49,41 @@ const Janet *janet_tuple_end(Janet *tuple) {
 /* Build a tuple with n values */
 const Janet *janet_tuple_n(const Janet *values, int32_t n) {
     Janet *t = janet_tuple_begin(n);
-    memcpy(t, values, sizeof(Janet) * n);
+    safe_memcpy(t, values, sizeof(Janet) * n);
     return janet_tuple_end(t);
 }
 
-/* Check if two tuples are equal */
-int janet_tuple_equal(const Janet *lhs, const Janet *rhs) {
-    int32_t index;
-    int32_t llen = janet_tuple_length(lhs);
-    int32_t rlen = janet_tuple_length(rhs);
-    int32_t lhash = janet_tuple_hash(lhs);
-    int32_t rhash = janet_tuple_hash(rhs);
-    if (lhash == 0)
-        lhash = janet_tuple_hash(lhs) = janet_array_calchash(lhs, llen);
-    if (rhash == 0)
-        rhash = janet_tuple_hash(rhs) = janet_array_calchash(rhs, rlen);
-    if (lhash != rhash)
-        return 0;
-    if (llen != rlen)
-        return 0;
-    for (index = 0; index < llen; index++) {
-        if (!janet_equals(lhs[index], rhs[index]))
-            return 0;
-    }
-    return 1;
-}
-
-/* Compare tuples */
-int janet_tuple_compare(const Janet *lhs, const Janet *rhs) {
-    int32_t i;
-    int32_t llen = janet_tuple_length(lhs);
-    int32_t rlen = janet_tuple_length(rhs);
-    int32_t count = llen < rlen ? llen : rlen;
-    for (i = 0; i < count; ++i) {
-        int comp = janet_compare(lhs[i], rhs[i]);
-        if (comp != 0) return comp;
-    }
-    if (llen < rlen)
-        return -1;
-    else if (llen > rlen)
-        return 1;
-    return 0;
-}
-
 /* C Functions */
 
-static Janet cfun_tuple_brackets(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_tuple_brackets,
+              "(tuple/brackets & xs)",
+              "Creates a new bracketed tuple containing the elements xs.") {
     const Janet *tup = janet_tuple_n(argv, argc);
     janet_tuple_flag(tup) |= JANET_TUPLE_FLAG_BRACKETCTOR;
     return janet_wrap_tuple(tup);
 }
 
-static Janet cfun_tuple_slice(int32_t argc, Janet *argv) {
-    JanetRange range = janet_getslice(argc, argv);
+JANET_CORE_FN(cfun_tuple_slice,
+              "(tuple/slice arrtup [,start=0 [,end=(length arrtup)]])",
+              "Take a sub sequence of an array or tuple from index start "
+              "inclusive to index end exclusive. If start or end are not provided, "
+              "they default to 0 and the length of arrtup respectively. "
+              "'start' and 'end' can also be negative to indicate indexing "
+              "from the end of the input. Note that index -1 is synonymous with "
+              "index '(length arrtup)' to allow a full negative slice range. "
+              "Returns the new tuple.") {
     JanetView view = janet_getindexed(argv, 0);
+    JanetRange range = janet_getslice(argc, argv);
     return janet_wrap_tuple(janet_tuple_n(view.items + range.start, range.end - range.start));
 }
 
-static Janet cfun_tuple_type(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_tuple_type,
+              "(tuple/type tup)",
+              "Checks how the tuple was constructed. Will return the keyword "
+              ":brackets if the tuple was parsed with brackets, and :parens "
+              "otherwise. The two types of tuples will behave the same most of "
+              "the time, but will print differently and be treated differently by "
+              "the compiler.") {
     janet_fixarity(argc, 1);
     const Janet *tup = janet_gettuple(argv, 0);
     if (janet_tuple_flag(tup) & JANET_TUPLE_FLAG_BRACKETCTOR) {
@@ -115,64 +93,38 @@ static Janet cfun_tuple_type(int32_t argc, Janet *argv) {
     }
 }
 
-static Janet cfun_tuple_sourcemap(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_tuple_sourcemap,
+              "(tuple/sourcemap tup)",
+              "Returns the sourcemap metadata attached to a tuple, "
+              " which is another tuple (line, column).") {
     janet_fixarity(argc, 1);
     const Janet *tup = janet_gettuple(argv, 0);
     Janet contents[2];
-    contents[0] = janet_wrap_integer(janet_tuple_head(tup)->sm_start);
-    contents[1] = janet_wrap_integer(janet_tuple_head(tup)->sm_end);
+    contents[0] = janet_wrap_integer(janet_tuple_head(tup)->sm_line);
+    contents[1] = janet_wrap_integer(janet_tuple_head(tup)->sm_column);
     return janet_wrap_tuple(janet_tuple_n(contents, 2));
 }
 
-static Janet cfun_tuple_setmap(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_tuple_setmap,
+              "(tuple/setmap tup line column)",
+              "Set the sourcemap metadata on a tuple. line and column indicate "
+              "should be integers.") {
     janet_fixarity(argc, 3);
     const Janet *tup = janet_gettuple(argv, 0);
-    janet_tuple_head(tup)->sm_start = janet_getinteger(argv, 1);
-    janet_tuple_head(tup)->sm_end = janet_getinteger(argv, 2);
+    janet_tuple_head(tup)->sm_line = janet_getinteger(argv, 1);
+    janet_tuple_head(tup)->sm_column = janet_getinteger(argv, 2);
     return argv[0];
 }
 
-static const JanetReg tuple_cfuns[] = {
-    {
-        "tuple/brackets", cfun_tuple_brackets,
-        JDOC("(tuple/brackets & xs)\n\n"
-             "Creates a new bracketed tuple containing the elements xs.")
-    },
-    {
-        "tuple/slice", cfun_tuple_slice,
-        JDOC("(tuple/slice arrtup [,start=0 [,end=(length arrtup)]])\n\n"
-             "Take a sub sequence of an array or tuple from index start "
-             "inclusive to index end exclusive. If start or end are not provided, "
-             "they default to 0 and the length of arrtup respectively."
-             "Returns the new tuple.")
-    },
-    {
-        "tuple/type", cfun_tuple_type,
-        JDOC("(tuple/type tup)\n\n"
-             "Checks how the tuple was constructed. Will return the keyword "
-             ":brackets if the tuple was parsed with brackets, and :parens "
-             "otherwise. The two types of tuples will behave the same most of "
-             "the time, but will print differently and be treated differently by "
-             "the compiler.")
-    },
-    {
-        "tuple/sourcemap", cfun_tuple_sourcemap,
-        JDOC("(tuple/sourcemap tup)\n\n"
-             "Returns the sourcemap metadata attached to a tuple. "
-             "The mapping is represented by a pair of byte offsets into the "
-             "the source code representing the start and end byte indices where "
-             "the tuple is. ")
-    },
-    {
-        "tuple/setmap", cfun_tuple_setmap,
-        JDOC("(tuple/setmap tup start end)\n\n"
-             "Set the sourcemap metadata on a tuple. start and end should "
-             "be integers representing byte offsets into the file. Returns tup.")
-    },
-    {NULL, NULL, NULL}
-};
-
 /* Load the tuple module */
 void janet_lib_tuple(JanetTable *env) {
-    janet_core_cfuns(env, NULL, tuple_cfuns);
+    JanetRegExt tuple_cfuns[] = {
+        JANET_CORE_REG("tuple/brackets", cfun_tuple_brackets),
+        JANET_CORE_REG("tuple/slice", cfun_tuple_slice),
+        JANET_CORE_REG("tuple/type", cfun_tuple_type),
+        JANET_CORE_REG("tuple/sourcemap", cfun_tuple_sourcemap),
+        JANET_CORE_REG("tuple/setmap", cfun_tuple_setmap),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, tuple_cfuns);
 }

src/core/typedarray.c

@@ -1,561 +0,0 @@
-/*
-* Copyright (c) 2019 Calvin Rose & contributors
-*
-* Permission is hereby granted, free of charge, to any person obtaining a copy
-* of this software and associated documentation files (the "Software"), to
-* deal in the Software without restriction, including without limitation the
-* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
-* sell copies of the Software, and to permit persons to whom the Software is
-* furnished to do so, subject to the following conditions:
-*
-* The above copyright notice and this permission notice shall be included in
-* all copies or substantial portions of the Software.
-*
-* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
-* IN THE SOFTWARE.
-*/
-
-#ifndef JANET_AMALG
-#include <janet.h>
-#include "util.h"
-#endif
-
-#ifdef JANET_TYPED_ARRAY
-
-static char *ta_type_names[] = {
-    "uint8",
-    "int8",
-    "uint16",
-    "int16",
-    "uint32",
-    "int32",
-    "uint64",
-    "int64",
-    "float32",
-    "float64",
-    "?"
-};
-
-static size_t ta_type_sizes[] = {
-    sizeof(uint8_t),
-    sizeof(int8_t),
-    sizeof(uint16_t),
-    sizeof(int16_t),
-    sizeof(uint32_t),
-    sizeof(int32_t),
-    sizeof(uint64_t),
-    sizeof(int64_t),
-    sizeof(float),
-    sizeof(double),
-    0
-};
-
-#define TA_COUNT_TYPES (JANET_TARRAY_TYPE_F64 + 1)
-#define TA_ATOM_MAXSIZE 8
-#define TA_FLAG_BIG_ENDIAN 1
-
-static JanetTArrayType get_ta_type_by_name(const uint8_t *name) {
-    for (int i = 0; i < TA_COUNT_TYPES; i++) {
-        if (!janet_cstrcmp(name, ta_type_names[i]))
-            return i;
-    }
-    janet_panicf("invalid typed array type %S", name);
-    return 0;
-}
-
-static JanetTArrayBuffer *ta_buffer_init(JanetTArrayBuffer *buf, size_t size) {
-    buf->data = NULL;
-    if (size > 0) {
-        buf->data = (uint8_t *)calloc(size, sizeof(uint8_t));
-        if (buf->data == NULL) {
-            JANET_OUT_OF_MEMORY;
-        }
-    }
-    buf->size = size;
-#ifdef JANET_BIG_ENDIAN
-    buf->flags = TA_FLAG_BIG_ENDIAN;
-#else
-    buf->flags = 0;
-#endif
-    return buf;
-}
-
-static int ta_buffer_gc(void *p, size_t s) {
-    (void) s;
-    JanetTArrayBuffer *buf = (JanetTArrayBuffer *)p;
-    free(buf->data);
-    return 0;
-}
-
-static void ta_buffer_marshal(void *p, JanetMarshalContext *ctx) {
-    JanetTArrayBuffer *buf = (JanetTArrayBuffer *)p;
-    janet_marshal_size(ctx, buf->size);
-    janet_marshal_int(ctx, buf->flags);
-    janet_marshal_bytes(ctx, buf->data, buf->size);
-}
-
-static void ta_buffer_unmarshal(void *p, JanetMarshalContext *ctx) {
-    JanetTArrayBuffer *buf = (JanetTArrayBuffer *)p;
-    size_t size = janet_unmarshal_size(ctx);
-    ta_buffer_init(buf, size);
-    buf->flags = janet_unmarshal_int(ctx);
-    janet_unmarshal_bytes(ctx, buf->data, size);
-}
-
-static const JanetAbstractType ta_buffer_type = {
-    "ta/buffer",
-    ta_buffer_gc,
-    NULL,
-    NULL,
-    NULL,
-    ta_buffer_marshal,
-    ta_buffer_unmarshal,
-    NULL
-};
-
-static int ta_mark(void *p, size_t s) {
-    (void) s;
-    JanetTArrayView *view = (JanetTArrayView *)p;
-    janet_mark(janet_wrap_abstract(view->buffer));
-    return 0;
-}
-
-static void ta_view_marshal(void *p, JanetMarshalContext *ctx) {
-    JanetTArrayView *view = (JanetTArrayView *)p;
-    size_t offset = (view->buffer->data - view->as.u8);
-    janet_marshal_size(ctx, view->size);
-    janet_marshal_size(ctx, view->stride);
-    janet_marshal_int(ctx, view->type);
-    janet_marshal_size(ctx, offset);
-    janet_marshal_janet(ctx, janet_wrap_abstract(view->buffer));
-}
-
-static void ta_view_unmarshal(void *p, JanetMarshalContext *ctx) {
-    JanetTArrayView *view = (JanetTArrayView *)p;
-    size_t offset;
-    int32_t atype;
-    Janet buffer;
-    view->size = janet_unmarshal_size(ctx);
-    view->stride = janet_unmarshal_size(ctx);
-    atype = janet_unmarshal_int(ctx);
-    if (atype < 0 || atype >= TA_COUNT_TYPES)
-        janet_panic("bad typed array type");
-    view->type = atype;
-    offset = janet_unmarshal_size(ctx);
-    buffer = janet_unmarshal_janet(ctx);
-    if (!janet_checktype(buffer, JANET_ABSTRACT) ||
-            (janet_abstract_type(janet_unwrap_abstract(buffer)) != &ta_buffer_type)) {
-        janet_panicf("expected typed array buffer");
-    }
-    view->buffer = (JanetTArrayBuffer *)janet_unwrap_abstract(buffer);
-    size_t buf_need_size = offset + (ta_type_sizes[view->type]) * ((view->size - 1) * view->stride + 1);
-    if (view->buffer->size < buf_need_size)
-        janet_panic("bad typed array offset in marshalled data");
-    view->as.u8 = view->buffer->data + offset;
-}
-
-static Janet ta_getter(void *p, Janet key) {
-    Janet value;
-    size_t index, i;
-    JanetTArrayView *array = p;
-    if (!janet_checksize(key)) janet_panic("expected size as key");
-    index = (size_t) janet_unwrap_number(key);
-    i = index * array->stride;
-    if (index >= array->size) {
-        value = janet_wrap_nil();
-    } else {
-        switch (array->type) {
-            case JANET_TARRAY_TYPE_U8:
-                value = janet_wrap_number(array->as.u8[i]);
-                break;
-            case JANET_TARRAY_TYPE_S8:
-                value = janet_wrap_number(array->as.s8[i]);
-                break;
-            case JANET_TARRAY_TYPE_U16:
-                value = janet_wrap_number(array->as.u16[i]);
-                break;
-            case JANET_TARRAY_TYPE_S16:
-                value = janet_wrap_number(array->as.s16[i]);
-                break;
-            case JANET_TARRAY_TYPE_U32:
-                value = janet_wrap_number(array->as.u32[i]);
-                break;
-            case JANET_TARRAY_TYPE_S32:
-                value = janet_wrap_number(array->as.s32[i]);
-                break;
-#ifdef JANET_INT_TYPES
-            case JANET_TARRAY_TYPE_U64:
-                value = janet_wrap_u64(array->as.u64[i]);
-                break;
-            case JANET_TARRAY_TYPE_S64:
-                value = janet_wrap_s64(array->as.s64[i]);
-                break;
-#endif
-            case JANET_TARRAY_TYPE_F32:
-                value = janet_wrap_number(array->as.f32[i]);
-                break;
-            case JANET_TARRAY_TYPE_F64:
-                value = janet_wrap_number(array->as.f64[i]);
-                break;
-            default:
-                janet_panicf("cannot get from typed array of type %s",
-                             ta_type_names[array->type]);
-                break;
-        }
-    }
-    return value;
-}
-
-static void ta_setter(void *p, Janet key, Janet value) {
-    size_t index, i;
-    if (!janet_checksize(key)) janet_panic("expected size as key");
-    index = (size_t) janet_unwrap_number(key);
-    JanetTArrayView *array = p;
-    i = index * array->stride;
-    if (index >= array->size) {
-        janet_panic("index out of bounds");
-    }
-    if (!janet_checktype(value, JANET_NUMBER) &&
-            array->type != JANET_TARRAY_TYPE_U64 &&
-            array->type != JANET_TARRAY_TYPE_S64) {
-        janet_panic("expected number value");
-    }
-    switch (array->type) {
-        case JANET_TARRAY_TYPE_U8:
-            array->as.u8[i] = (uint8_t) janet_unwrap_number(value);
-            break;
-        case JANET_TARRAY_TYPE_S8:
-            array->as.s8[i] = (int8_t) janet_unwrap_number(value);
-            break;
-        case JANET_TARRAY_TYPE_U16:
-            array->as.u16[i] = (uint16_t) janet_unwrap_number(value);
-            break;
-        case JANET_TARRAY_TYPE_S16:
-            array->as.s16[i] = (int16_t) janet_unwrap_number(value);
-            break;
-        case JANET_TARRAY_TYPE_U32:
-            array->as.u32[i] = (uint32_t) janet_unwrap_number(value);
-            break;
-        case JANET_TARRAY_TYPE_S32:
-            array->as.s32[i] = (int32_t) janet_unwrap_number(value);
-            break;
-#ifdef JANET_INT_TYPES
-        case JANET_TARRAY_TYPE_U64:
-            array->as.u64[i] = janet_unwrap_u64(value);
-            break;
-        case JANET_TARRAY_TYPE_S64:
-            array->as.s64[i] = janet_unwrap_s64(value);
-            break;
-#endif
-        case JANET_TARRAY_TYPE_F32:
-            array->as.f32[i] = (float) janet_unwrap_number(value);
-            break;
-        case JANET_TARRAY_TYPE_F64:
-            array->as.f64[i] = janet_unwrap_number(value);
-            break;
-        default:
-            janet_panicf("cannot set typed array of type %s",
-                         ta_type_names[array->type]);
-            break;
-    }
-}
-
-static const JanetAbstractType ta_view_type = {
-    "ta/view",
-    NULL,
-    ta_mark,
-    ta_getter,
-    ta_setter,
-    ta_view_marshal,
-    ta_view_unmarshal,
-    NULL
-};
-
-JanetTArrayBuffer *janet_tarray_buffer(size_t size) {
-    JanetTArrayBuffer *buf = janet_abstract(&ta_buffer_type, sizeof(JanetTArrayBuffer));
-    ta_buffer_init(buf, size);
-    return buf;
-}
-
-JanetTArrayView *janet_tarray_view(
-    JanetTArrayType type,
-    size_t size,
-    size_t stride,
-    size_t offset,
-    JanetTArrayBuffer *buffer) {
-
-    JanetTArrayView *view = janet_abstract(&ta_view_type, sizeof(JanetTArrayView));
-
-    if ((stride < 1) || (size < 1)) janet_panic("stride and size should be > 0");
-    size_t buf_size = offset + ta_type_sizes[type] * ((size - 1) * stride + 1);
-
-    if (NULL == buffer) {
-        buffer = janet_abstract(&ta_buffer_type, sizeof(JanetTArrayBuffer));
-        ta_buffer_init(buffer, buf_size);
-    }
-
-    if (buffer->size < buf_size) {
-        janet_panicf("bad buffer size, %i bytes allocated < %i required",
-                     buffer->size,
-                     buf_size);
-    }
-
-    view->buffer = buffer;
-    view->stride = stride;
-    view->size = size;
-    view->as.u8 = buffer->data + offset;
-    view->type = type;
-
-    return view;
-}
-
-JanetTArrayBuffer *janet_gettarray_buffer(const Janet *argv, int32_t n) {
-    return janet_getabstract(argv, n, &ta_buffer_type);
-}
-
-JanetTArrayView *janet_gettarray_any(const Janet *argv, int32_t n) {
-    return janet_getabstract(argv, n, &ta_view_type);
-}
-
-JanetTArrayView *janet_gettarray_view(const Janet *argv, int32_t n, JanetTArrayType type) {
-    JanetTArrayView *view = janet_getabstract(argv, n, &ta_view_type);
-    if (view->type != type) {
-        janet_panicf("bad slot #%d, expected typed array of type %s, got %v",
-                     n, ta_type_names[type], argv[n]);
-    }
-    return view;
-}
-
-static Janet cfun_typed_array_new(int32_t argc, Janet *argv) {
-    janet_arity(argc, 2, 5);
-    size_t offset = 0;
-    size_t stride = 1;
-    JanetTArrayBuffer *buffer = NULL;
-    const uint8_t *keyw = janet_getkeyword(argv, 0);
-    JanetTArrayType type = get_ta_type_by_name(keyw);
-    size_t size = janet_getsize(argv, 1);
-    if (argc > 2)
-        stride = janet_getsize(argv, 2);
-    if (argc > 3)
-        offset = janet_getsize(argv, 3);
-    if (argc > 4) {
-        if (!janet_checktype(argv[4], JANET_ABSTRACT)) {
-            janet_panicf("bad slot #%d, expected ta/view|ta/buffer, got %v",
-                         4, argv[4]);
-        }
-        void *p = janet_unwrap_abstract(argv[4]);
-        if (janet_abstract_type(p) == &ta_view_type) {
-            JanetTArrayView *view = (JanetTArrayView *)p;
-            offset = (view->buffer->data - view->as.u8) + offset * ta_type_sizes[view->type];
-            stride *= view->stride;
-            buffer = view->buffer;
-        } else {
-            buffer = p;
-        }
-    }
-    JanetTArrayView *view = janet_tarray_view(type, size, stride, offset, buffer);
-    return janet_wrap_abstract(view);
-}
-
-static JanetTArrayView *ta_is_view(Janet x) {
-    if (!janet_checktype(x, JANET_ABSTRACT)) return NULL;
-    void *abst = janet_unwrap_abstract(x);
-    if (janet_abstract_type(abst) != &ta_view_type) return NULL;
-    return (JanetTArrayView *)abst;
-}
-
-static Janet cfun_typed_array_buffer(int32_t argc, Janet *argv) {
-    janet_fixarity(argc, 1);
-    JanetTArrayView *view;
-    if ((view = ta_is_view(argv[0]))) {
-        return janet_wrap_abstract(view->buffer);
-    }
-    size_t size = janet_getsize(argv, 0);
-    JanetTArrayBuffer *buf = janet_tarray_buffer(size);
-    return janet_wrap_abstract(buf);
-}
-
-static Janet cfun_typed_array_size(int32_t argc, Janet *argv) {
-    janet_fixarity(argc, 1);
-    JanetTArrayView *view;
-    if ((view = ta_is_view(argv[0]))) {
-        return janet_wrap_number((double) view->size);
-    }
-    JanetTArrayBuffer *buf = (JanetTArrayBuffer *)janet_getabstract(argv, 0, &ta_buffer_type);
-    return janet_wrap_number((double) buf->size);
-}
-
-static Janet cfun_typed_array_properties(int32_t argc, Janet *argv) {
-    janet_fixarity(argc, 1);
-    JanetTArrayView *view;
-    if ((view = ta_is_view(argv[0]))) {
-        JanetTArrayView *view = janet_unwrap_abstract(argv[0]);
-        JanetKV *props = janet_struct_begin(6);
-        ptrdiff_t boffset = view->as.u8 - view->buffer->data;
-        janet_struct_put(props, janet_ckeywordv("size"),
-                         janet_wrap_number((double) view->size));
-        janet_struct_put(props, janet_ckeywordv("byte-offset"),
-                         janet_wrap_number((double) boffset));
-        janet_struct_put(props, janet_ckeywordv("stride"),
-                         janet_wrap_number((double) view->stride));
-        janet_struct_put(props, janet_ckeywordv("type"),
-                         janet_ckeywordv(ta_type_names[view->type]));
-        janet_struct_put(props, janet_ckeywordv("type-size"),
-                         janet_wrap_number((double) ta_type_sizes[view->type]));
-        janet_struct_put(props, janet_ckeywordv("buffer"),
-                         janet_wrap_abstract(view->buffer));
-        return janet_wrap_struct(janet_struct_end(props));
-    } else {
-        JanetTArrayBuffer *buffer = janet_gettarray_buffer(argv, 0);
-        JanetKV *props = janet_struct_begin(2);
-        janet_struct_put(props, janet_ckeywordv("size"),
-                         janet_wrap_number((double) buffer->size));
-        janet_struct_put(props, janet_ckeywordv("big-endian"),
-                         janet_wrap_boolean(buffer->flags & TA_FLAG_BIG_ENDIAN));
-        return janet_wrap_struct(janet_struct_end(props));
-    }
-}
-
-static Janet cfun_typed_array_slice(int32_t argc, Janet *argv) {
-    janet_arity(argc, 1, 3);
-    JanetTArrayView *src = janet_getabstract(argv, 0, &ta_view_type);
-    JanetRange range;
-    int32_t length = (int32_t)src->size;
-    if (argc == 1) {
-        range.start = 0;
-        range.end = length;
-    } else if (argc == 2) {
-        range.start = janet_gethalfrange(argv, 1, length, "start");
-        range.end = length;
-    } else {
-        range.start = janet_gethalfrange(argv, 1, length, "start");
-        range.end = janet_gethalfrange(argv, 2, length, "end");
-        if (range.end < range.start)
-            range.end = range.start;
-    }
-    JanetArray *array = janet_array(range.end - range.start);
-    if (array->data) {
-        for (int32_t i = range.start; i < range.end; i++) {
-            array->data[i - range.start] = ta_getter(src, janet_wrap_number(i));
-        }
-    }
-    array->count = range.end - range.start;
-    return janet_wrap_array(array);
-}
-
-static Janet cfun_typed_array_copy_bytes(int32_t argc, Janet *argv) {
-    janet_arity(argc, 4, 5);
-    JanetTArrayView *src = janet_getabstract(argv, 0, &ta_view_type);
-    size_t index_src = janet_getsize(argv, 1);
-    JanetTArrayView *dst = janet_getabstract(argv, 2, &ta_view_type);
-    size_t index_dst = janet_getsize(argv, 3);
-    size_t count = (argc == 5) ? janet_getsize(argv, 4) : 1;
-    size_t src_atom_size = ta_type_sizes[src->type];
-    size_t dst_atom_size = ta_type_sizes[dst->type];
-    size_t step_src = src->stride * src_atom_size;
-    size_t step_dst = dst->stride * dst_atom_size;
-    size_t pos_src = (src->as.u8 - src->buffer->data) + (index_src * step_src);
-    size_t pos_dst = (dst->as.u8 - dst->buffer->data) + (index_dst * step_dst);
-    uint8_t *ps = src->buffer->data + pos_src, * pd = dst->buffer->data + pos_dst;
-    if ((pos_dst + (count - 1)*step_dst + src_atom_size <= dst->buffer->size) &&
-            (pos_src + (count - 1)*step_src + src_atom_size <= src->buffer->size)) {
-        for (size_t i = 0; i < count; i++) {
-            memmove(pd, ps, src_atom_size);
-            pd += step_dst;
-            ps += step_src;
-        }
-    } else {
-        janet_panic("typed array copy out of bounds");
-    }
-    return janet_wrap_nil();
-}
-
-static Janet cfun_typed_array_swap_bytes(int32_t argc, Janet *argv) {
-    janet_arity(argc, 4, 5);
-    JanetTArrayView *src = janet_getabstract(argv, 0, &ta_view_type);
-    size_t index_src = janet_getsize(argv, 1);
-    JanetTArrayView *dst = janet_getabstract(argv, 2, &ta_view_type);
-    size_t index_dst = janet_getsize(argv, 3);
-    size_t count = (argc == 5) ? janet_getsize(argv, 4) : 1;
-    size_t src_atom_size = ta_type_sizes[src->type];
-    size_t dst_atom_size = ta_type_sizes[dst->type];
-    size_t step_src = src->stride * src_atom_size;
-    size_t step_dst = dst->stride * dst_atom_size;
-    size_t pos_src = (src->as.u8 - src->buffer->data) + (index_src * step_src);
-    size_t pos_dst = (dst->as.u8 - dst->buffer->data) + (index_dst * step_dst);
-    uint8_t *ps = src->buffer->data + pos_src, * pd = dst->buffer->data + pos_dst;
-    uint8_t temp[TA_ATOM_MAXSIZE];
-    if ((pos_dst + (count - 1)*step_dst + src_atom_size <= dst->buffer->size) &&
-            (pos_src + (count - 1)*step_src + src_atom_size <= src->buffer->size)) {
-        for (size_t i = 0; i < count; i++) {
-            memcpy(temp, ps, src_atom_size);
-            memcpy(ps, pd, src_atom_size);
-            memcpy(pd, temp, src_atom_size);
-            pd += step_dst;
-            ps += step_src;
-        }
-    } else {
-        janet_panic("typed array swap out of bounds");
-    }
-    return janet_wrap_nil();
-}
-
-static const JanetReg ta_cfuns[] = {
-    {
-        "tarray/new", cfun_typed_array_new,
-        JDOC("(tarray/new type size [stride = 1 [offset = 0 [tarray | buffer]]] )\n\n"
-             "Create new typed array.")
-    },
-    {
-        "tarray/buffer", cfun_typed_array_buffer,
-        JDOC("(tarray/buffer (array | size) )\n\n"
-             "Return typed array buffer or create a new buffer.")
-    },
-    {
-        "tarray/length", cfun_typed_array_size,
-        JDOC("(tarray/length (array | buffer) )\n\n"
-             "Return typed array or buffer size.")
-    },
-    {
-        "tarray/properties", cfun_typed_array_properties,
-        JDOC("(tarray/properties array )\n\n"
-             "Return typed array properties as a struct.")
-    },
-    {
-        "tarray/copy-bytes", cfun_typed_array_copy_bytes,
-        JDOC("(tarray/copy-bytes src sindex dst dindex [count=1])\n\n"
-             "Copy count elements of src array from index sindex "
-             "to dst array at position dindex "
-             "memory can overlap.")
-    },
-    {
-        "tarray/swap-bytes", cfun_typed_array_swap_bytes,
-        JDOC("(tarray/swap-bytes src sindex dst dindex [count=1])\n\n"
-             "Swap count elements between src array from index sindex "
-             "and dst array at position dindex "
-             "memory can overlap.")
-    },
-    {
-        "tarray/slice", cfun_typed_array_slice,
-        JDOC("(tarray/slice tarr [, start=0 [, end=(size tarr)]])\n\n"
-             "Takes a slice of a typed array from start to end. The range is half "
-             "open, [start, end). Indexes can also be negative, indicating indexing "
-             "from the end of the end of the typed array. By default, start is 0 and end is "
-             "the size of the typed array. Returns a new janet array.")
-    },
-    {NULL, NULL, NULL}
-};
-
-/* Module entry point */
-void janet_lib_typed_array(JanetTable *env) {
-    janet_core_cfuns(env, NULL, ta_cfuns);
-    janet_register_abstract_type(&ta_buffer_type);
-    janet_register_abstract_type(&ta_view_type);
-}
-
-#endif

src/core/util.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -20,14 +20,27 @@
 * IN THE SOFTWARE.
 */
 
-#include <inttypes.h>
-
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #include "util.h"
 #include "state.h"
 #include "gc.h"
+#ifdef JANET_WINDOWS
+#include <windows.h>
+#else
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
 #endif
+#endif
+
+#ifdef JANET_APPLE
+#include <AvailabilityMacros.h>
+#endif
+
+#include <inttypes.h>
 
 /* Base 64 lookup table for digits */
 const char janet_base64[65] =
@@ -93,7 +106,7 @@ const char *const janet_status_names[16] = {
     "alive"
 };
 
-/* Calculate hash for string */
+#ifndef JANET_PRF
 
 int32_t janet_string_calchash(const uint8_t *str, int32_t len) {
     const uint8_t *end = str + len;
@@ -103,22 +116,140 @@ int32_t janet_string_calchash(const uint8_t *str, int32_t len) {
     return (int32_t) hash;
 }
 
+#else
+
+/*
+  Public domain siphash implementation sourced from:
+
+  https://raw.githubusercontent.com/veorq/SipHash/master/halfsiphash.c
+
+  We have made a few alterations, such as hardcoding the output size
+  and then removing dead code.
+*/
+#define cROUNDS 2
+#define dROUNDS 4
+
+#define ROTL(x, b) (uint32_t)(((x) << (b)) | ((x) >> (32 - (b))))
+
+#define U8TO32_LE(p)                                                           \
+    (((uint32_t)((p)[0])) | ((uint32_t)((p)[1]) << 8) |                        \
+     ((uint32_t)((p)[2]) << 16) | ((uint32_t)((p)[3]) << 24))
+
+#define SIPROUND                                                               \
+    do {                                                                       \
+        v0 += v1;                                                              \
+        v1 = ROTL(v1, 5);                                                      \
+        v1 ^= v0;                                                              \
+        v0 = ROTL(v0, 16);                                                     \
+        v2 += v3;                                                              \
+        v3 = ROTL(v3, 8);                                                      \
+        v3 ^= v2;                                                              \
+        v0 += v3;                                                              \
+        v3 = ROTL(v3, 7);                                                      \
+        v3 ^= v0;                                                              \
+        v2 += v1;                                                              \
+        v1 = ROTL(v1, 13);                                                     \
+        v1 ^= v2;                                                              \
+        v2 = ROTL(v2, 16);                                                     \
+    } while (0)
+
+static uint32_t halfsiphash(const uint8_t *in, const size_t inlen, const uint8_t *k) {
+
+    uint32_t v0 = 0;
+    uint32_t v1 = 0;
+    uint32_t v2 = UINT32_C(0x6c796765);
+    uint32_t v3 = UINT32_C(0x74656462);
+    uint32_t k0 = U8TO32_LE(k);
+    uint32_t k1 = U8TO32_LE(k + 4);
+    uint32_t m;
+    int i;
+    const uint8_t *end = in + inlen - (inlen % sizeof(uint32_t));
+    const int left = inlen & 3;
+    uint32_t b = ((uint32_t)inlen) << 24;
+    v3 ^= k1;
+    v2 ^= k0;
+    v1 ^= k1;
+    v0 ^= k0;
+
+    for (; in != end; in += 4) {
+        m = U8TO32_LE(in);
+        v3 ^= m;
+
+        for (i = 0; i < cROUNDS; ++i)
+            SIPROUND;
+
+        v0 ^= m;
+    }
+
+    switch (left) {
+        case 3:
+            b |= ((uint32_t)in[2]) << 16;
+        /* fallthrough */
+        case 2:
+            b |= ((uint32_t)in[1]) << 8;
+        /* fallthrough */
+        case 1:
+            b |= ((uint32_t)in[0]);
+            break;
+        case 0:
+            break;
+    }
+
+    v3 ^= b;
+
+    for (i = 0; i < cROUNDS; ++i)
+        SIPROUND;
+
+    v0 ^= b;
+
+    v2 ^= 0xff;
+
+    for (i = 0; i < dROUNDS; ++i)
+        SIPROUND;
+
+    b = v1 ^ v3;
+    return b;
+}
+/* end of siphash */
+
+static uint8_t hash_key[JANET_HASH_KEY_SIZE] = {0};
+
+void janet_init_hash_key(uint8_t new_key[JANET_HASH_KEY_SIZE]) {
+    memcpy(hash_key, new_key, sizeof(hash_key));
+}
+
+/* Calculate hash for string */
+
+int32_t janet_string_calchash(const uint8_t *str, int32_t len) {
+    uint32_t hash;
+    hash = halfsiphash(str, len, hash_key);
+    return (int32_t)hash;
+}
+
+#endif
+
+uint32_t janet_hash_mix(uint32_t input, uint32_t more) {
+    uint32_t mix1 = (more + 0x9e3779b9 + (input << 6) + (input >> 2));
+    return input ^ (0x9e3779b9 + (mix1 << 6) + (mix1 >> 2));
+}
+
 /* Computes hash of an array of values */
 int32_t janet_array_calchash(const Janet *array, int32_t len) {
     const Janet *end = array + len;
-    uint32_t hash = 5381;
-    while (array < end)
-        hash = (hash << 5) + hash + janet_hash(*array++);
+    uint32_t hash = 33;
+    while (array < end) {
+        hash = janet_hash_mix(hash, janet_hash(*array++));
+    }
     return (int32_t) hash;
 }
 
 /* Computes hash of an array of values */
 int32_t janet_kv_calchash(const JanetKV *kvs, int32_t len) {
     const JanetKV *end = kvs + len;
-    uint32_t hash = 5381;
+    uint32_t hash = 33;
     while (kvs < end) {
-        hash = (hash << 5) + hash + janet_hash(kvs->key);
-        hash = (hash << 5) + hash + janet_hash(kvs->value);
+        hash = janet_hash_mix(hash, janet_hash(kvs->key));
+        hash = janet_hash_mix(hash, janet_hash(kvs->value));
         kvs++;
     }
     return (int32_t) hash;
@@ -135,6 +266,12 @@ int32_t janet_tablen(int32_t n) {
     return n + 1;
 }
 
+/* Avoid some undefined behavior that was common in the code base. */
+void safe_memcpy(void *dest, const void *src, size_t len) {
+    if (!len) return;
+    memcpy(dest, src, len);
+}
+
 /* Helper to find a value in a Janet struct or table. Returns the bucket
  * containing the key, or the first empty bucket if there is no such key. */
 const JanetKV *janet_dict_find(const JanetKV *buckets, int32_t cap, Janet key) {
@@ -233,150 +370,309 @@ const void *janet_strbinsearch(
     return NULL;
 }
 
-/* Register a value in the global registry */
-void janet_register(const char *name, JanetCFunction cfun) {
-    Janet key = janet_wrap_cfunction(cfun);
-    Janet value = janet_csymbolv(name);
-    janet_table_put(janet_vm_registry, key, value);
+/* Add sourcemapping and documentation to a binding table */
+static void janet_add_meta(JanetTable *table, const char *doc, const char *source_file, int32_t source_line) {
+    if (doc) {
+        janet_table_put(table, janet_ckeywordv("doc"), janet_cstringv(doc));
+    }
+    if (source_file && source_line) {
+        Janet triple[3];
+        triple[0] = janet_cstringv(source_file);
+        triple[1] = janet_wrap_integer(source_line);
+        triple[2] = janet_wrap_integer(1);
+        Janet value = janet_wrap_tuple(janet_tuple_n(triple, 3));
+        janet_table_put(table, janet_ckeywordv("source-map"), value);
+    }
 }
 
 /* Add a def to an environment */
-void janet_def(JanetTable *env, const char *name, Janet val, const char *doc) {
+void janet_def_sm(JanetTable *env, const char *name, Janet val, const char *doc, const char *source_file, int32_t source_line) {
     JanetTable *subt = janet_table(2);
     janet_table_put(subt, janet_ckeywordv("value"), val);
-    if (doc)
-        janet_table_put(subt, janet_ckeywordv("doc"), janet_cstringv(doc));
+    janet_add_meta(subt, doc, source_file, source_line);
     janet_table_put(env, janet_csymbolv(name), janet_wrap_table(subt));
 }
+void janet_def(JanetTable *env, const char *name, Janet value, const char *doc) {
+    janet_def_sm(env, name, value, doc, NULL, 0);
+}
 
 /* Add a var to the environment */
-void janet_var(JanetTable *env, const char *name, Janet val, const char *doc) {
+void janet_var_sm(JanetTable *env, const char *name, Janet val, const char *doc, const char *source_file, int32_t source_line) {
     JanetArray *array = janet_array(1);
     JanetTable *subt = janet_table(2);
     janet_array_push(array, val);
     janet_table_put(subt, janet_ckeywordv("ref"), janet_wrap_array(array));
-    if (doc)
-        janet_table_put(subt, janet_ckeywordv("doc"), janet_cstringv(doc));
+    janet_add_meta(subt, doc, source_file, source_line);
     janet_table_put(env, janet_csymbolv(name), janet_wrap_table(subt));
 }
+void janet_var(JanetTable *env, const char *name, Janet val, const char *doc) {
+    janet_var_sm(env, name, val, doc, NULL, 0);
+}
+
+/* Registry functions */
+
+/* Put the registry in sorted order. */
+static void janet_registry_sort(void) {
+    for (size_t i = 1; i < janet_vm.registry_count; i++) {
+        JanetCFunRegistry reg = janet_vm.registry[i];
+        size_t j;
+        for (j = i; j > 0; j--) {
+            if ((void *)(janet_vm.registry[j - 1].cfun) < (void *)(reg.cfun)) break;
+            janet_vm.registry[j] = janet_vm.registry[j - 1];
+        }
+        janet_vm.registry[j] = reg;
+    }
+    janet_vm.registry_dirty = 0;
+}
+
+void janet_registry_put(
+    JanetCFunction key,
+    const char *name,
+    const char *name_prefix,
+    const char *source_file,
+    int32_t source_line) {
+    if (janet_vm.registry_count == janet_vm.registry_cap) {
+        size_t newcap = (janet_vm.registry_count + 1) * 2;
+        /* Size it nicely with core by default */
+        if (newcap < 512) {
+            newcap = 512;
+        }
+        void *newmem = janet_realloc(janet_vm.registry, newcap * sizeof(JanetCFunRegistry));
+        if (NULL == newmem) {
+            JANET_OUT_OF_MEMORY;
+        }
+        janet_vm.registry = newmem;
+        janet_vm.registry_cap = newcap;
+    }
+    JanetCFunRegistry value = {
+        key,
+        name,
+        name_prefix,
+        source_file,
+        source_line
+    };
+    janet_vm.registry[janet_vm.registry_count++] = value;
+    janet_vm.registry_dirty = 1;
+}
+
+JanetCFunRegistry *janet_registry_get(JanetCFunction key) {
+    if (janet_vm.registry_dirty) {
+        janet_registry_sort();
+    }
+    for (size_t i = 0; i < janet_vm.registry_count; i++) {
+        if (janet_vm.registry[i].cfun == key) {
+            return janet_vm.registry + i;
+        }
+    }
+    JanetCFunRegistry *lo = janet_vm.registry;
+    JanetCFunRegistry *hi = lo + janet_vm.registry_count;
+    while (lo < hi) {
+        JanetCFunRegistry *mid = lo + (hi - lo) / 2;
+        if (mid->cfun == key) {
+            return mid;
+        }
+        if ((void *)(mid->cfun) > (void *)(key)) {
+            hi = mid;
+        } else {
+            lo = mid + 1;
+        }
+    }
+    return NULL;
+}
+
+typedef struct {
+    char *buf;
+    size_t plen;
+} NameBuf;
+
+static void namebuf_init(NameBuf *namebuf, const char *prefix) {
+    size_t plen = strlen(prefix);
+    namebuf->plen = plen;
+    namebuf->buf = janet_malloc(namebuf->plen + 256);
+    if (NULL == namebuf->buf) {
+        JANET_OUT_OF_MEMORY;
+    }
+    memcpy(namebuf->buf, prefix, plen);
+    namebuf->buf[plen] = '/';
+}
+
+static void namebuf_deinit(NameBuf *namebuf) {
+    janet_free(namebuf->buf);
+}
+
+static char *namebuf_name(NameBuf *namebuf, const char *suffix) {
+    size_t slen = strlen(suffix);
+    namebuf->buf = janet_realloc(namebuf->buf, namebuf->plen + 2 + slen);
+    if (NULL == namebuf->buf) {
+        JANET_OUT_OF_MEMORY;
+    }
+    memcpy(namebuf->buf + namebuf->plen + 1, suffix, slen);
+    namebuf->buf[namebuf->plen + 1 + slen] = '\0';
+    return (char *)(namebuf->buf);
+}
 
-/* Load many cfunctions at once */
 void janet_cfuns(JanetTable *env, const char *regprefix, const JanetReg *cfuns) {
     while (cfuns->name) {
-        Janet name = janet_csymbolv(cfuns->name);
-        Janet longname = name;
-        if (regprefix) {
-            int32_t reglen = 0;
-            int32_t nmlen = 0;
-            while (regprefix[reglen]) reglen++;
-            while (cfuns->name[nmlen]) nmlen++;
-            int32_t symlen = reglen + 1 + nmlen;
-            uint8_t *longname_buffer = malloc(symlen);
-            memcpy(longname_buffer, regprefix, reglen);
-            longname_buffer[reglen] = '/';
-            memcpy(longname_buffer + reglen + 1, cfuns->name, nmlen);
-            longname = janet_wrap_symbol(janet_symbol(longname_buffer, symlen));
-            free(longname_buffer);
-        }
         Janet fun = janet_wrap_cfunction(cfuns->cfun);
-        janet_def(env, cfuns->name, fun, cfuns->documentation);
-        janet_table_put(janet_vm_registry, fun, longname);
+        if (env) janet_def(env, cfuns->name, fun, cfuns->documentation);
+        janet_registry_put(cfuns->cfun, cfuns->name, regprefix, NULL, 0);
         cfuns++;
     }
 }
 
+void janet_cfuns_ext(JanetTable *env, const char *regprefix, const JanetRegExt *cfuns) {
+    while (cfuns->name) {
+        Janet fun = janet_wrap_cfunction(cfuns->cfun);
+        if (env) janet_def_sm(env, cfuns->name, fun, cfuns->documentation, cfuns->source_file, cfuns->source_line);
+        janet_registry_put(cfuns->cfun, cfuns->name, regprefix, cfuns->source_file, cfuns->source_line);
+        cfuns++;
+    }
+}
+
+void janet_cfuns_prefix(JanetTable *env, const char *regprefix, const JanetReg *cfuns) {
+    NameBuf nb;
+    if (env) namebuf_init(&nb, regprefix);
+    while (cfuns->name) {
+        Janet fun = janet_wrap_cfunction(cfuns->cfun);
+        if (env) janet_def(env, namebuf_name(&nb, cfuns->name), fun, cfuns->documentation);
+        janet_registry_put(cfuns->cfun, cfuns->name, regprefix, NULL, 0);
+        cfuns++;
+    }
+    if (env) namebuf_deinit(&nb);
+}
+
+void janet_cfuns_ext_prefix(JanetTable *env, const char *regprefix, const JanetRegExt *cfuns) {
+    NameBuf nb;
+    if (env) namebuf_init(&nb, regprefix);
+    while (cfuns->name) {
+        Janet fun = janet_wrap_cfunction(cfuns->cfun);
+        if (env) janet_def_sm(env, namebuf_name(&nb, cfuns->name), fun, cfuns->documentation, cfuns->source_file, cfuns->source_line);
+        janet_registry_put(cfuns->cfun, cfuns->name, regprefix, cfuns->source_file, cfuns->source_line);
+        cfuns++;
+    }
+    if (env) namebuf_deinit(&nb);
+}
+
+/* Register a value in the global registry */
+void janet_register(const char *name, JanetCFunction cfun) {
+    janet_registry_put(cfun, name, NULL, NULL, 0);
+}
+
 /* Abstract type introspection */
 
-static const JanetAbstractType type_wrap = {
-    "core/type-info",
-    NULL,
-    NULL,
-    NULL,
-    NULL,
-    NULL,
-    NULL,
-    NULL
-};
-
-typedef struct {
-    const JanetAbstractType *at;
-} JanetAbstractTypeWrap;
-
 void janet_register_abstract_type(const JanetAbstractType *at) {
-    JanetAbstractTypeWrap *abstract = (JanetAbstractTypeWrap *)
-                                      janet_abstract(&type_wrap, sizeof(JanetAbstractTypeWrap));
-    abstract->at = at;
     Janet sym = janet_csymbolv(at->name);
-    if (!(janet_checktype(janet_table_get(janet_vm_registry, sym), JANET_NIL))) {
+    Janet check = janet_table_get(janet_vm.abstract_registry, sym);
+    if (!janet_checktype(check, JANET_NIL) && at != janet_unwrap_pointer(check)) {
         janet_panicf("cannot register abstract type %s, "
                      "a type with the same name exists", at->name);
     }
-    janet_table_put(janet_vm_registry, sym, janet_wrap_abstract(abstract));
+    janet_table_put(janet_vm.abstract_registry, sym, janet_wrap_pointer((void *) at));
 }
 
 const JanetAbstractType *janet_get_abstract_type(Janet key) {
-    Janet twrap = janet_table_get(janet_vm_registry, key);
-    if (janet_checktype(twrap, JANET_NIL)) {
+    Janet wrapped = janet_table_get(janet_vm.abstract_registry, key);
+    if (janet_checktype(wrapped, JANET_NIL)) {
         return NULL;
     }
-    if (!janet_checktype(twrap, JANET_ABSTRACT) ||
-            (janet_abstract_type(janet_unwrap_abstract(twrap)) != &type_wrap)) {
-        janet_panic("expected abstract type");
-    }
-    JanetAbstractTypeWrap *w = (JanetAbstractTypeWrap *)janet_unwrap_abstract(twrap);
-    return w->at;
+    return (JanetAbstractType *)(janet_unwrap_pointer(wrapped));
 }
 
 #ifndef JANET_BOOTSTRAP
-void janet_core_def(JanetTable *env, const char *name, Janet x, const void *p) {
+void janet_core_def_sm(JanetTable *env, const char *name, Janet x, const void *p, const void *sf, int32_t sl) {
+    (void) sf;
+    (void) sl;
     (void) p;
     Janet key = janet_csymbolv(name);
-    Janet value;
-    /* During init, allow replacing core library cfunctions with values from
-     * the env. */
-    Janet check = janet_table_get(env, key);
-    if (janet_checktype(check, JANET_NIL)) {
-        value = x;
-    } else {
-        value = check;
-    }
-    janet_table_put(env, key, value);
-    if (janet_checktype(value, JANET_CFUNCTION)) {
-        janet_table_put(janet_vm_registry, value, key);
+    janet_table_put(env, key, x);
+    if (janet_checktype(x, JANET_CFUNCTION)) {
+        janet_registry_put(janet_unwrap_cfunction(x), name, NULL, NULL, 0);
     }
 }
 
-void janet_core_cfuns(JanetTable *env, const char *regprefix, const JanetReg *cfuns) {
+void janet_core_cfuns_ext(JanetTable *env, const char *regprefix, const JanetRegExt *cfuns) {
     (void) regprefix;
     while (cfuns->name) {
         Janet fun = janet_wrap_cfunction(cfuns->cfun);
-        janet_core_def(env, cfuns->name, fun, cfuns->documentation);
+        janet_table_put(env, janet_csymbolv(cfuns->name), fun);
+        janet_registry_put(cfuns->cfun, cfuns->name, regprefix, cfuns->source_file, cfuns->source_line);
         cfuns++;
     }
 }
 #endif
 
-/* Resolve a symbol in the environment */
-JanetBindingType janet_resolve(JanetTable *env, const uint8_t *sym, Janet *out) {
-    Janet ref;
+JanetBinding janet_binding_from_entry(Janet entry) {
     JanetTable *entry_table;
-    Janet entry = janet_table_get(env, janet_wrap_symbol(sym));
+    JanetBinding binding = {
+        JANET_BINDING_NONE,
+        janet_wrap_nil(),
+        JANET_BINDING_DEP_NONE
+    };
+
+    /* Check environment for entry */
     if (!janet_checktype(entry, JANET_TABLE))
-        return JANET_BINDING_NONE;
+        return binding;
     entry_table = janet_unwrap_table(entry);
-    if (!janet_checktype(
-                janet_table_get(entry_table, janet_ckeywordv("macro")),
-                JANET_NIL)) {
-        *out = janet_table_get(entry_table, janet_ckeywordv("value"));
-        return JANET_BINDING_MACRO;
+
+    /* deprecation check */
+    Janet deprecate = janet_table_get(entry_table, janet_ckeywordv("deprecated"));
+    if (janet_checktype(deprecate, JANET_KEYWORD)) {
+        JanetKeyword depkw = janet_unwrap_keyword(deprecate);
+        if (!janet_cstrcmp(depkw, "relaxed")) {
+            binding.deprecation = JANET_BINDING_DEP_RELAXED;
+        } else if (!janet_cstrcmp(depkw, "normal")) {
+            binding.deprecation = JANET_BINDING_DEP_NORMAL;
+        } else if (!janet_cstrcmp(depkw, "strict")) {
+            binding.deprecation = JANET_BINDING_DEP_STRICT;
+        }
+    } else if (!janet_checktype(deprecate, JANET_NIL)) {
+        binding.deprecation = JANET_BINDING_DEP_NORMAL;
     }
-    ref = janet_table_get(entry_table, janet_ckeywordv("ref"));
-    if (janet_checktype(ref, JANET_ARRAY)) {
-        *out = ref;
-        return JANET_BINDING_VAR;
+
+    int macro = janet_truthy(janet_table_get(entry_table, janet_ckeywordv("macro")));
+    Janet value = janet_table_get(entry_table, janet_ckeywordv("value"));
+    Janet ref = janet_table_get(entry_table, janet_ckeywordv("ref"));
+    int ref_is_valid = janet_checktype(ref, JANET_ARRAY);
+    int redef = ref_is_valid && janet_truthy(janet_table_get(entry_table, janet_ckeywordv("redef")));
+
+    if (macro) {
+        binding.value = redef ? ref : value;
+        binding.type = redef ? JANET_BINDING_DYNAMIC_MACRO : JANET_BINDING_MACRO;
+        return binding;
     }
-    *out = janet_table_get(entry_table, janet_ckeywordv("value"));
-    return JANET_BINDING_DEF;
+
+    if (ref_is_valid) {
+        binding.value = ref;
+        binding.type = redef ? JANET_BINDING_DYNAMIC_DEF : JANET_BINDING_VAR;
+    } else {
+        binding.value = value;
+        binding.type = JANET_BINDING_DEF;
+    }
+
+    return binding;
+}
+
+JanetBinding janet_resolve_ext(JanetTable *env, const uint8_t *sym) {
+    Janet entry = janet_table_get(env, janet_wrap_symbol(sym));
+    return janet_binding_from_entry(entry);
+}
+
+JanetBindingType janet_resolve(JanetTable *env, const uint8_t *sym, Janet *out) {
+    JanetBinding binding = janet_resolve_ext(env, sym);
+    if (binding.type == JANET_BINDING_DYNAMIC_DEF || binding.type == JANET_BINDING_DYNAMIC_MACRO) {
+        *out = janet_array_peek(janet_unwrap_array(binding.value));
+    } else {
+        *out = binding.value;
+    }
+    return binding.type;
+}
+
+/* Resolve a symbol in the core environment. */
+Janet janet_resolve_core(const char *name) {
+    JanetTable *env = janet_core_env(NULL);
+    Janet out = janet_wrap_nil();
+    janet_resolve(env, janet_csymbol(name), &out);
+    return out;
 }
 
 /* Read both tuples and arrays as c pointers + int32_t length. Return 1 if the
@@ -446,6 +742,154 @@ int janet_checksize(Janet x) {
     if (!janet_checktype(x, JANET_NUMBER))
         return 0;
     double dval = janet_unwrap_number(x);
-    return dval == (double)((size_t) dval) &&
-           dval <= SIZE_MAX;
+    if (dval != (double)((size_t) dval)) return 0;
+    if (SIZE_MAX > JANET_INTMAX_INT64) {
+        return dval <= JANET_INTMAX_INT64;
+    } else {
+        return dval <= SIZE_MAX;
+    }
+}
+
+JanetTable *janet_get_core_table(const char *name) {
+    JanetTable *env = janet_core_env(NULL);
+    Janet out = janet_wrap_nil();
+    JanetBindingType bt = janet_resolve(env, janet_csymbol(name), &out);
+    if (bt == JANET_BINDING_NONE) return NULL;
+    if (!janet_checktype(out, JANET_TABLE)) return NULL;
+    return janet_unwrap_table(out);
+}
+
+/* Sort keys of a dictionary type */
+int32_t janet_sorted_keys(const JanetKV *dict, int32_t cap, int32_t *index_buffer) {
+
+    /* First, put populated indices into index_buffer */
+    int32_t next_index = 0;
+    for (int32_t i = 0; i < cap; i++) {
+        if (!janet_checktype(dict[i].key, JANET_NIL)) {
+            index_buffer[next_index++] = i;
+        }
+    }
+
+    /* Next, sort those (simple insertion sort here for now) */
+    for (int32_t i = 1; i < next_index; i++) {
+        int32_t index_to_insert = index_buffer[i];
+        Janet lhs = dict[index_to_insert].key;
+        for (int32_t j = i - 1; j >= 0; j--) {
+            index_buffer[j + 1] = index_buffer[j];
+            Janet rhs = dict[index_buffer[j]].key;
+            if (janet_compare(lhs, rhs) >= 0) {
+                index_buffer[j + 1] = index_to_insert;
+                break;
+            } else if (j == 0) {
+                index_buffer[0] = index_to_insert;
+            }
+        }
+    }
+
+    /* Return number of indices found */
+    return next_index;
+
+}
+
+/* Clock shims for various platforms */
+#ifdef JANET_GETTIME
+#ifdef JANET_WINDOWS
+int janet_gettime(struct timespec *spec) {
+    FILETIME ftime;
+    GetSystemTimeAsFileTime(&ftime);
+    int64_t wintime = (int64_t)(ftime.dwLowDateTime) | ((int64_t)(ftime.dwHighDateTime) << 32);
+    /* Windows epoch is January 1, 1601 apparently */
+    wintime -= 116444736000000000LL;
+    spec->tv_sec  = wintime / 10000000LL;
+    /* Resolution is 100 nanoseconds. */
+    spec->tv_nsec = wintime % 10000000LL * 100;
+    return 0;
+}
+/* clock_gettime() wasn't available on Mac until 10.12. */
+#elif defined(JANET_APPLE) && !defined(MAC_OS_X_VERSION_10_12)
+#include <mach/clock.h>
+#include <mach/mach.h>
+int janet_gettime(struct timespec *spec) {
+    clock_serv_t cclock;
+    mach_timespec_t mts;
+    host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
+    clock_get_time(cclock, &mts);
+    mach_port_deallocate(mach_task_self(), cclock);
+    spec->tv_sec = mts.tv_sec;
+    spec->tv_nsec = mts.tv_nsec;
+    return 0;
+}
+#else
+int janet_gettime(struct timespec *spec) {
+    return clock_gettime(CLOCK_REALTIME, spec);
+}
+#endif
+#endif
+
+/* Setting C99 standard makes this not available, but it should
+ * work/link properly if we detect a BSD */
+#if defined(JANET_BSD) || defined(MAC_OS_X_VERSION_10_7)
+void arc4random_buf(void *buf, size_t nbytes);
+#endif
+
+int janet_cryptorand(uint8_t *out, size_t n) {
+#ifdef JANET_WINDOWS
+    for (size_t i = 0; i < n; i += sizeof(unsigned int)) {
+        unsigned int v;
+        if (rand_s(&v))
+            return -1;
+        for (int32_t j = 0; (j < sizeof(unsigned int)) && (i + j < n); j++) {
+            out[i + j] = v & 0xff;
+            v = v >> 8;
+        }
+    }
+    return 0;
+#elif defined(JANET_LINUX) || ( defined(JANET_APPLE) && !defined(MAC_OS_X_VERSION_10_7) )
+    /* We should be able to call getrandom on linux, but it doesn't seem
+       to be uniformly supported on linux distros.
+       On Mac, arc4random_buf wasn't available on until 10.7.
+       In these cases, use this fallback path for now... */
+    int rc;
+    int randfd;
+    RETRY_EINTR(randfd, open("/dev/urandom", O_RDONLY | O_CLOEXEC));
+    if (randfd < 0)
+        return -1;
+    while (n > 0) {
+        ssize_t nread;
+        RETRY_EINTR(nread, read(randfd, out, n));
+        if (nread <= 0) {
+            RETRY_EINTR(rc, close(randfd));
+            return -1;
+        }
+        out += nread;
+        n -= nread;
+    }
+    RETRY_EINTR(rc, close(randfd));
+    return 0;
+#elif defined(JANET_BSD) || defined(MAC_OS_X_VERSION_10_7)
+    arc4random_buf(out, n);
+    return 0;
+#else
+    (void) n;
+    (void) out;
+    return -1;
+#endif
+}
+
+
+/* Alloc function macro fills */
+void *(janet_malloc)(size_t size) {
+    return janet_malloc(size);
+}
+
+void (janet_free)(void *ptr) {
+    janet_free(ptr);
+}
+
+void *(janet_calloc)(size_t nmemb, size_t size) {
+    return janet_calloc(nmemb, size);
+}
+
+void *(janet_realloc)(void *ptr, size_t size) {
+    return janet_realloc(ptr, size);
 }

src/core/util.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -24,14 +24,24 @@
 #define JANET_UTIL_H_defined
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
+#include "state.h"
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+
+#if !defined(JANET_REDUCED_OS) || !defined(JANET_SINGLE_THREADED)
+#include <time.h>
+#define JANET_GETTIME
 #endif
 
 /* Handle runtime errors */
-#ifndef janet_exit
+#ifndef JANET_EXIT
 #include <stdio.h>
-#define janet_exit(m) do { \
-    printf("C runtime error at line %d in file %s: %s\n",\
+#define JANET_EXIT(m) do { \
+    fprintf(stderr, "C runtime error at line %d in file %s: %s\n",\
         __LINE__,\
         __FILE__,\
         (m));\
@@ -39,36 +49,29 @@
 } while (0)
 #endif
 
+#define JANET_MARSHAL_DECREF 0x40000
+
 #define janet_assert(c, m) do { \
-    if (!(c)) janet_exit((m)); \
+    if (!(c)) JANET_EXIT((m)); \
 } while (0)
 
-/* What to do when out of memory */
-#ifndef JANET_OUT_OF_MEMORY
-#include <stdio.h>
-#define JANET_OUT_OF_MEMORY do { printf("janet out of memory\n"); exit(1); } while (0)
-#endif
-
-/* Omit docstrings in some builds */
-#ifndef JANET_BOOTSTRAP
-#define JDOC(x) NULL
-#define JANET_NO_BOOTSTRAP
-#else
-#define JDOC(x) x
-#endif
-
 /* Utils */
+uint32_t janet_hash_mix(uint32_t input, uint32_t more);
 #define janet_maphash(cap, hash) ((uint32_t)(hash) & (cap - 1))
+int janet_valid_utf8(const uint8_t *str, int32_t len);
+int janet_is_symbol_char(uint8_t c);
 extern const char janet_base64[65];
 int32_t janet_array_calchash(const Janet *array, int32_t len);
 int32_t janet_kv_calchash(const JanetKV *kvs, int32_t len);
 int32_t janet_string_calchash(const uint8_t *str, int32_t len);
 int32_t janet_tablen(int32_t n);
+void safe_memcpy(void *dest, const void *src, size_t len);
 void janet_buffer_push_types(JanetBuffer *buffer, int types);
 const JanetKV *janet_dict_find(const JanetKV *buckets, int32_t cap, Janet key);
-Janet janet_dict_get(const JanetKV *buckets, int32_t cap, Janet key);
 void janet_memempty(JanetKV *mem, int32_t count);
 void *janet_memalloc_empty(int32_t count);
+JanetTable *janet_get_core_table(const char *name);
+void janet_def_addflags(JanetFuncDef *def);
 const void *janet_strbinsearch(
     const void *tab,
     size_t tabcount,
@@ -80,17 +83,46 @@ void janet_buffer_format(
     int32_t argstart,
     int32_t argc,
     Janet *argv);
+Janet janet_next_impl(Janet ds, Janet key, int is_interpreter);
+JanetBinding janet_binding_from_entry(Janet entry);
+
+/* Registry functions */
+void janet_registry_put(
+    JanetCFunction key,
+    const char *name,
+    const char *name_prefix,
+    const char *source_file,
+    int32_t source_line);
+JanetCFunRegistry *janet_registry_get(JanetCFunction key);
 
 /* Inside the janet core, defining globals is different
  * at bootstrap time and normal runtime */
 #ifdef JANET_BOOTSTRAP
-#define janet_core_def janet_def
-#define janet_core_cfuns janet_cfuns
+#define JANET_CORE_REG JANET_REG
+#define JANET_CORE_FN JANET_FN
+#define JANET_CORE_DEF JANET_DEF
+#define janet_core_def_sm janet_def_sm
+#define janet_core_cfuns_ext janet_cfuns_ext
 #else
-void janet_core_def(JanetTable *env, const char *name, Janet x, const void *p);
-void janet_core_cfuns(JanetTable *env, const char *regprefix, const JanetReg *cfuns);
+#define JANET_CORE_REG JANET_REG_S
+#define JANET_CORE_FN JANET_FN_S
+#define JANET_CORE_DEF(ENV, NAME, X, DOC) janet_core_def_sm(ENV, NAME, X, DOC, NULL, 0)
+void janet_core_def_sm(JanetTable *env, const char *name, Janet x, const void *p, const void *sf, int32_t sl);
+void janet_core_cfuns_ext(JanetTable *env, const char *regprefix, const JanetRegExt *cfuns);
 #endif
 
+/* Clock gettime */
+#ifdef JANET_GETTIME
+int janet_gettime(struct timespec *spec);
+#endif
+
+/* strdup */
+#ifdef JANET_WINDOWS
+#define strdup(x) _strdup(x)
+#endif
+
+#define RETRY_EINTR(RC, CALL) do { (RC) = CALL; } while((RC) < 0 && errno == EINTR)
+
 /* Initialize builtin libraries */
 void janet_lib_io(JanetTable *env);
 void janet_lib_math(JanetTable *env);
@@ -98,6 +130,7 @@ void janet_lib_array(JanetTable *env);
 void janet_lib_tuple(JanetTable *env);
 void janet_lib_buffer(JanetTable *env);
 void janet_lib_table(JanetTable *env);
+void janet_lib_struct(JanetTable *env);
 void janet_lib_fiber(JanetTable *env);
 void janet_lib_os(JanetTable *env);
 void janet_lib_string(JanetTable *env);
@@ -117,5 +150,14 @@ void janet_lib_typed_array(JanetTable *env);
 #ifdef JANET_INT_TYPES
 void janet_lib_inttypes(JanetTable *env);
 #endif
+#ifdef JANET_NET
+void janet_lib_net(JanetTable *env);
+extern const JanetAbstractType janet_address_type;
+#endif
+#ifdef JANET_EV
+void janet_lib_ev(JanetTable *env);
+void janet_ev_mark(void);
+int janet_make_pipe(JanetHandle handles[2], int mode);
+#endif
 
 #endif

src/core/value.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,45 +21,278 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
+#include "util.h"
+#include "state.h"
+#include "gc.h"
+#include "fiber.h"
 #include <janet.h>
 #endif
 
+#include <math.h>
+
+static void push_traversal_node(void *lhs, void *rhs, int32_t index2) {
+    JanetTraversalNode node;
+    node.self = (JanetGCObject *) lhs;
+    node.other = (JanetGCObject *) rhs;
+    node.index = 0;
+    node.index2 = index2;
+    int is_new = janet_vm.traversal_base == NULL;
+    if (is_new || (janet_vm.traversal + 1 >= janet_vm.traversal_top)) {
+        size_t oldsize = is_new ? 0 : (janet_vm.traversal - janet_vm.traversal_base);
+        size_t newsize = 2 * oldsize + 1;
+        if (newsize < 128) {
+            newsize = 128;
+        }
+        JanetTraversalNode *tn = janet_realloc(janet_vm.traversal_base, newsize * sizeof(JanetTraversalNode));
+        if (tn == NULL) {
+            JANET_OUT_OF_MEMORY;
+        }
+        janet_vm.traversal_base = tn;
+        janet_vm.traversal_top = janet_vm.traversal_base + newsize;
+        janet_vm.traversal = janet_vm.traversal_base + oldsize;
+    }
+    *(++janet_vm.traversal) = node;
+}
+
+/*
+ * Used for travsersing structs and tuples without recursion
+ * Returns:
+ * 0 - next node found
+ * 1 - early stop - lhs < rhs
+ * 2 - no next node found
+ * 3 - early stop - lhs > rhs
+ */
+static int traversal_next(Janet *x, Janet *y) {
+    JanetTraversalNode *t = janet_vm.traversal;
+    while (t && t > janet_vm.traversal_base) {
+        JanetGCObject *self = t->self;
+        JanetTupleHead *tself = (JanetTupleHead *)self;
+        JanetStructHead *sself = (JanetStructHead *)self;
+        JanetGCObject *other = t->other;
+        JanetTupleHead *tother = (JanetTupleHead *)other;
+        JanetStructHead *sother = (JanetStructHead *)other;
+        if ((self->flags & JANET_MEM_TYPEBITS) == JANET_MEMORY_TUPLE) {
+            /* Node is a tuple at index t->index */
+            if (t->index < tself->length && t->index < tother->length) {
+                int32_t index = t->index++;
+                *x = tself->data[index];
+                *y = tother->data[index];
+                janet_vm.traversal = t;
+                return 0;
+            }
+            if (t->index2 && tself->length != tother->length) {
+                return tself->length > tother->length ? 3 : 1;
+            }
+        } else {
+            /* Node is a struct at index t->index: if t->index2 is true, we should return the values. */
+            if (t->index2) {
+                t->index2 = 0;
+                int32_t index = t->index++;
+                *x = sself->data[index].value;
+                *y = sother->data[index].value;
+                janet_vm.traversal = t;
+                return 0;
+            }
+            for (int32_t i = t->index; i < sself->capacity; i++) {
+                t->index2 = 1;
+                *x = sself->data[t->index].key;
+                *y = sother->data[t->index].key;
+                janet_vm.traversal = t;
+                return 0;
+            }
+            /* Traverse prototype */
+            JanetStruct sproto = sself->proto;
+            JanetStruct oproto = sother->proto;
+            if (sproto && !oproto) return 3;
+            if (!sproto && oproto) return 1;
+            if (oproto && sproto) {
+                *x = janet_wrap_struct(sproto);
+                *y = janet_wrap_struct(oproto);
+                janet_vm.traversal = t - 1;
+                return 0;
+            }
+        }
+        t--;
+    }
+    janet_vm.traversal = t;
+    return 2;
+}
+
 /*
  * Define a number of functions that can be used internally on ANY Janet.
  */
 
-/* Check if two values are equal. This is strict equality with no conversion. */
-int janet_equals(Janet x, Janet y) {
-    int result = 0;
-    if (janet_type(x) != janet_type(y)) {
-        result = 0;
-    } else {
-        switch (janet_type(x)) {
-            case JANET_NIL:
-                result = 1;
-                break;
-            case JANET_BOOLEAN:
-                result = (janet_unwrap_boolean(x) == janet_unwrap_boolean(y));
-                break;
-            case JANET_NUMBER:
-                result = (janet_unwrap_number(x) == janet_unwrap_number(y));
-                break;
-            case JANET_STRING:
-                result = janet_string_equal(janet_unwrap_string(x), janet_unwrap_string(y));
-                break;
-            case JANET_TUPLE:
-                result = janet_tuple_equal(janet_unwrap_tuple(x), janet_unwrap_tuple(y));
-                break;
-            case JANET_STRUCT:
-                result = janet_struct_equal(janet_unwrap_struct(x), janet_unwrap_struct(y));
-                break;
-            default:
-                /* compare pointers */
-                result = (janet_unwrap_pointer(x) == janet_unwrap_pointer(y));
+Janet janet_next(Janet ds, Janet key) {
+    return janet_next_impl(ds, key, 0);
+}
+
+Janet janet_next_impl(Janet ds, Janet key, int is_interpreter) {
+    JanetType t = janet_type(ds);
+    switch (t) {
+        default:
+            janet_panicf("expected iterable type, got %v", ds);
+        case JANET_TABLE:
+        case JANET_STRUCT: {
+            const JanetKV *start;
+            int32_t cap;
+            if (t == JANET_TABLE) {
+                JanetTable *tab = janet_unwrap_table(ds);
+                cap = tab->capacity;
+                start = tab->data;
+            } else {
+                JanetStruct st = janet_unwrap_struct(ds);
+                cap = janet_struct_capacity(st);
+                start = st;
+            }
+            const JanetKV *end = start + cap;
+            const JanetKV *kv = janet_checktype(key, JANET_NIL)
+                                ? start
+                                : janet_dict_find(start, cap, key) + 1;
+            while (kv < end) {
+                if (!janet_checktype(kv->key, JANET_NIL)) return kv->key;
+                kv++;
+            }
+            break;
+        }
+        case JANET_STRING:
+        case JANET_KEYWORD:
+        case JANET_SYMBOL:
+        case JANET_BUFFER:
+        case JANET_ARRAY:
+        case JANET_TUPLE: {
+            int32_t i;
+            if (janet_checktype(key, JANET_NIL)) {
+                i = 0;
+            } else if (janet_checkint(key)) {
+                i = janet_unwrap_integer(key) + 1;
+            } else {
                 break;
+            }
+            int32_t len;
+            if (t == JANET_BUFFER) {
+                len = janet_unwrap_buffer(ds)->count;
+            } else if (t == JANET_ARRAY) {
+                len = janet_unwrap_array(ds)->count;
+            } else if (t == JANET_TUPLE) {
+                len = janet_tuple_length(janet_unwrap_tuple(ds));
+            } else {
+                len = janet_string_length(janet_unwrap_string(ds));
+            }
+            if (i < len && i >= 0) {
+                return janet_wrap_integer(i);
+            }
+            break;
+        }
+        case JANET_ABSTRACT: {
+            JanetAbstract abst = janet_unwrap_abstract(ds);
+            const JanetAbstractType *at = janet_abstract_type(abst);
+            if (NULL == at->next) break;
+            return at->next(abst, key);
+        }
+        case JANET_FIBER: {
+            JanetFiber *child = janet_unwrap_fiber(ds);
+            Janet retreg;
+            JanetFiberStatus status = janet_fiber_status(child);
+            if (status == JANET_STATUS_ALIVE ||
+                    status == JANET_STATUS_DEAD ||
+                    status == JANET_STATUS_ERROR ||
+                    status == JANET_STATUS_USER0 ||
+                    status == JANET_STATUS_USER1 ||
+                    status == JANET_STATUS_USER2 ||
+                    status == JANET_STATUS_USER3 ||
+                    status == JANET_STATUS_USER4) {
+                return janet_wrap_nil();
+            }
+            janet_vm.fiber->child = child;
+            JanetSignal sig = janet_continue(child, janet_wrap_nil(), &retreg);
+            if (sig != JANET_SIGNAL_OK && !(child->flags & (1 << sig))) {
+                if (is_interpreter) {
+                    janet_signalv(sig, retreg);
+                } else {
+                    janet_vm.fiber->child = NULL;
+                    janet_panicv(retreg);
+                }
+            }
+            janet_vm.fiber->child = NULL;
+            if (sig == JANET_SIGNAL_OK ||
+                    sig == JANET_SIGNAL_ERROR ||
+                    sig == JANET_SIGNAL_USER0 ||
+                    sig == JANET_SIGNAL_USER1 ||
+                    sig == JANET_SIGNAL_USER2 ||
+                    sig == JANET_SIGNAL_USER3 ||
+                    sig == JANET_SIGNAL_USER4) {
+                /* Fiber cannot be resumed, so discard last value. */
+                return janet_wrap_nil();
+            } else {
+                return janet_wrap_integer(0);
+            }
         }
     }
-    return result;
+    return janet_wrap_nil();
+}
+
+/* Compare two abstract values */
+static int janet_compare_abstract(JanetAbstract xx, JanetAbstract yy) {
+    if (xx == yy) return 0;
+    const JanetAbstractType *xt = janet_abstract_type(xx);
+    const JanetAbstractType *yt = janet_abstract_type(yy);
+    if (xt != yt) {
+        return xt > yt ? 1 : -1;
+    }
+    if (xt->compare == NULL) {
+        return xx > yy ? 1 : -1;
+    }
+    return xt->compare(xx, yy);
+}
+
+int janet_equals(Janet x, Janet y) {
+    janet_vm.traversal = janet_vm.traversal_base;
+    do {
+        if (janet_type(x) != janet_type(y)) return 0;
+        switch (janet_type(x)) {
+            case JANET_NIL:
+                break;
+            case JANET_BOOLEAN:
+                if (janet_unwrap_boolean(x) != janet_unwrap_boolean(y)) return 0;
+                break;
+            case JANET_NUMBER:
+                if (janet_unwrap_number(x) != janet_unwrap_number(y)) return 0;
+                break;
+            case JANET_STRING:
+                if (!janet_string_equal(janet_unwrap_string(x), janet_unwrap_string(y))) return 0;
+                break;
+            case JANET_ABSTRACT:
+                if (janet_compare_abstract(janet_unwrap_abstract(x), janet_unwrap_abstract(y))) return 0;
+                break;
+            default:
+                if (janet_unwrap_pointer(x) != janet_unwrap_pointer(y)) return 0;
+                break;
+            case JANET_TUPLE: {
+                const Janet *t1 = janet_unwrap_tuple(x);
+                const Janet *t2 = janet_unwrap_tuple(y);
+                if (t1 == t2) break;
+                if (janet_tuple_hash(t1) != janet_tuple_hash(t2)) return 0;
+                if (janet_tuple_length(t1) != janet_tuple_length(t2)) return 0;
+                push_traversal_node(janet_tuple_head(t1), janet_tuple_head(t2), 0);
+                break;
+            }
+            break;
+            case JANET_STRUCT: {
+                const JanetKV *s1 = janet_unwrap_struct(x);
+                const JanetKV *s2 = janet_unwrap_struct(y);
+                if (s1 == s2) break;
+                if (janet_struct_hash(s1) != janet_struct_hash(s2)) return 0;
+                if (janet_struct_length(s1) != janet_struct_length(s2)) return 0;
+                if (janet_struct_proto(s1) && !janet_struct_proto(s2)) return 0;
+                if (!janet_struct_proto(s1) && janet_struct_proto(s2)) return 0;
+                push_traversal_node(janet_struct_head(s1), janet_struct_head(s2), 0);
+                break;
+            }
+            break;
+        }
+    } while (!traversal_next(&x, &y));
+    return 1;
 }
 
 /* Computes a hash value for a function */
@@ -83,19 +316,41 @@ int32_t janet_hash(Janet x) {
         case JANET_STRUCT:
             hash = janet_struct_hash(janet_unwrap_struct(x));
             break;
+        case JANET_NUMBER: {
+            union {
+                double d;
+                uint64_t u;
+            } as;
+            as.d = janet_unwrap_number(x);
+            as.d += 0.0; /* normalize negative 0 */
+            uint32_t lo = (uint32_t)(as.u & 0xFFFFFFFF);
+            uint32_t hi = (uint32_t)(as.u >> 32);
+            uint32_t hilo = (hi ^ lo) * 2654435769u;
+            hash = (int32_t)((hilo << 16) | (hilo >> 16));
+            break;
+        }
+        case JANET_ABSTRACT: {
+            JanetAbstract xx = janet_unwrap_abstract(x);
+            const JanetAbstractType *at = janet_abstract_type(xx);
+            if (at->hash != NULL) {
+                hash = at->hash(xx, janet_abstract_size(xx));
+                break;
+            }
+        }
+        /* fallthrough */
         default:
-            /* TODO - test performance with different hash functions */
             if (sizeof(double) == sizeof(void *)) {
-                /* Assuming 8 byte pointer */
+                /* Assuming 8 byte pointer (8 byte aligned) */
                 uint64_t i = janet_u64(x);
-                hash = (int32_t)(i & 0xFFFFFFFF);
-                /* Get a bit more entropy by shifting the low bits out */
-                hash >>= 3;
-                hash ^= (int32_t)(i >> 32);
+                uint32_t lo = (uint32_t)(i & 0xFFFFFFFF);
+                uint32_t hi = (uint32_t)(i >> 32);
+                uint32_t hilo = (hi ^ lo) * 2654435769u;
+                hash = (int32_t)((hilo << 16) | (hilo >> 16));
             } else {
                 /* Assuming 4 byte pointer (or smaller) */
-                hash = (int32_t)((char *)janet_unwrap_pointer(x) - (char *)0);
-                hash >>= 2;
+                ptrdiff_t diff = ((char *)janet_unwrap_pointer(x) - (char *)0);
+                uint32_t hilo = (uint32_t) diff * 2654435769u;
+                hash = (int32_t)((hilo << 16) | (hilo >> 16));
             }
             break;
     }
@@ -104,54 +359,91 @@ int32_t janet_hash(Janet x) {
 
 /* Compares x to y. If they are equal returns 0. If x is less, returns -1.
  * If y is less, returns 1. All types are comparable
- * and should have strict ordering. */
+ * and should have strict ordering, excepts NaNs. */
 int janet_compare(Janet x, Janet y) {
-    if (janet_type(x) == janet_type(y)) {
-        switch (janet_type(x)) {
+    janet_vm.traversal = janet_vm.traversal_base;
+    int status;
+    do {
+        JanetType tx = janet_type(x);
+        JanetType ty = janet_type(y);
+        if (tx != ty) return tx < ty ? -1 : 1;
+        switch (tx) {
             case JANET_NIL:
-                return 0;
-            case JANET_BOOLEAN:
-                return janet_unwrap_boolean(x) - janet_unwrap_boolean(y);
-            case JANET_NUMBER:
-                /* Check for NaNs to ensure total order */
-                if (janet_unwrap_number(x) != janet_unwrap_number(x))
-                    return janet_unwrap_number(y) != janet_unwrap_number(y)
-                           ? 0
-                           : -1;
-                if (janet_unwrap_number(y) != janet_unwrap_number(y))
-                    return 1;
-
-                if (janet_unwrap_number(x) == janet_unwrap_number(y)) {
-                    return 0;
+                break;
+            case JANET_BOOLEAN: {
+                int diff = janet_unwrap_boolean(x) - janet_unwrap_boolean(y);
+                if (diff) return diff;
+                break;
+            }
+            case JANET_NUMBER: {
+                double xx = janet_unwrap_number(x);
+                double yy = janet_unwrap_number(y);
+                if (xx == yy) {
+                    break;
                 } else {
-                    return janet_unwrap_number(x) > janet_unwrap_number(y) ? 1 : -1;
+                    return (xx < yy) ? -1 : 1;
                 }
+            }
             case JANET_STRING:
             case JANET_SYMBOL:
-            case JANET_KEYWORD:
-                return janet_string_compare(janet_unwrap_string(x), janet_unwrap_string(y));
-            case JANET_TUPLE:
-                return janet_tuple_compare(janet_unwrap_tuple(x), janet_unwrap_tuple(y));
-            case JANET_STRUCT:
-                return janet_struct_compare(janet_unwrap_struct(x), janet_unwrap_struct(y));
-            default:
-                if (janet_unwrap_string(x) == janet_unwrap_string(y)) {
-                    return 0;
+            case JANET_KEYWORD: {
+                int diff = janet_string_compare(janet_unwrap_string(x), janet_unwrap_string(y));
+                if (diff) return diff;
+                break;
+            }
+            case JANET_ABSTRACT: {
+                int diff = janet_compare_abstract(janet_unwrap_abstract(x), janet_unwrap_abstract(y));
+                if (diff) return diff;
+                break;
+            }
+            default: {
+                if (janet_unwrap_pointer(x) == janet_unwrap_pointer(y)) {
+                    break;
                 } else {
-                    return janet_unwrap_string(x) > janet_unwrap_string(y) ? 1 : -1;
+                    return janet_unwrap_pointer(x) > janet_unwrap_pointer(y) ? 1 : -1;
                 }
+            }
+            case JANET_TUPLE: {
+                const Janet *lhs = janet_unwrap_tuple(x);
+                const Janet *rhs = janet_unwrap_tuple(y);
+                push_traversal_node(janet_tuple_head(lhs), janet_tuple_head(rhs), 1);
+                break;
+            }
+            case JANET_STRUCT: {
+                const JanetKV *lhs = janet_unwrap_struct(x);
+                const JanetKV *rhs = janet_unwrap_struct(y);
+                int32_t llen = janet_struct_capacity(lhs);
+                int32_t rlen = janet_struct_capacity(rhs);
+                int32_t lhash = janet_struct_hash(lhs);
+                int32_t rhash = janet_struct_hash(rhs);
+                if (llen < rlen) return -1;
+                if (llen > rlen) return 1;
+                if (lhash < rhash) return -1;
+                if (lhash > rhash) return 1;
+                push_traversal_node(janet_struct_head(lhs), janet_struct_head(rhs), 0);
+                break;
+            }
         }
-    }
-    return (janet_type(x) < janet_type(y)) ? -1 : 1;
+    } while (!(status = traversal_next(&x, &y)));
+    return status - 2;
+}
+
+static int32_t getter_checkint(Janet key, int32_t max) {
+    if (!janet_checkint(key)) goto bad;
+    int32_t ret = janet_unwrap_integer(key);
+    if (ret < 0) goto bad;
+    if (ret >= max) goto bad;
+    return ret;
+bad:
+    janet_panicf("expected integer key in range [0, %d), got %v", max, key);
 }
 
 /* Gets a value and returns. Can panic. */
-Janet janet_get(Janet ds, Janet key) {
+Janet janet_in(Janet ds, Janet key) {
     Janet value;
     switch (janet_type(ds)) {
         default:
             janet_panicf("expected %T, got %v", JANET_TFLAG_LENGTHABLE, ds);
-            value = janet_wrap_nil();
             break;
         case JANET_STRUCT:
             value = janet_struct_get(janet_unwrap_struct(ds), key);
@@ -161,79 +453,120 @@ Janet janet_get(Janet ds, Janet key) {
             break;
         case JANET_ARRAY: {
             JanetArray *array = janet_unwrap_array(ds);
-            int32_t index;
-            if (!janet_checkint(key))
-                janet_panic("expected integer key");
-            index = janet_unwrap_integer(key);
-            if (index < 0 || index >= array->count) {
-                value = janet_wrap_nil();
-            } else {
-                value = array->data[index];
-            }
+            int32_t index = getter_checkint(key, array->count);
+            value = array->data[index];
             break;
         }
         case JANET_TUPLE: {
             const Janet *tuple = janet_unwrap_tuple(ds);
-            int32_t index;
-            if (!janet_checkint(key))
-                janet_panic("expected integer key");
-            index = janet_unwrap_integer(key);
-            if (index < 0 || index >= janet_tuple_length(tuple)) {
-                value = janet_wrap_nil();
-            } else {
-                value = tuple[index];
-            }
+            int32_t len = janet_tuple_length(tuple);
+            value = tuple[getter_checkint(key, len)];
             break;
         }
         case JANET_BUFFER: {
             JanetBuffer *buffer = janet_unwrap_buffer(ds);
-            int32_t index;
-            if (!janet_checkint(key))
-                janet_panic("expected integer key");
-            index = janet_unwrap_integer(key);
-            if (index < 0 || index >= buffer->count) {
-                value = janet_wrap_nil();
-            } else {
-                value = janet_wrap_integer(buffer->data[index]);
-            }
+            int32_t index = getter_checkint(key, buffer->count);
+            value = janet_wrap_integer(buffer->data[index]);
             break;
         }
         case JANET_STRING:
         case JANET_SYMBOL:
         case JANET_KEYWORD: {
             const uint8_t *str = janet_unwrap_string(ds);
-            int32_t index;
-            if (!janet_checkint(key))
-                janet_panic("expected integer key");
-            index = janet_unwrap_integer(key);
-            if (index < 0 || index >= janet_string_length(str)) {
-                value = janet_wrap_nil();
-            } else {
-                value = janet_wrap_integer(str[index]);
-            }
+            int32_t index = getter_checkint(key, janet_string_length(str));
+            value = janet_wrap_integer(str[index]);
             break;
         }
         case JANET_ABSTRACT: {
             JanetAbstractType *type = (JanetAbstractType *)janet_abstract_type(janet_unwrap_abstract(ds));
             if (type->get) {
-                value = (type->get)(janet_unwrap_abstract(ds), key);
+                if (!(type->get)(janet_unwrap_abstract(ds), key, &value))
+                    janet_panicf("key %v not found in %v ", key, ds);
             } else {
                 janet_panicf("no getter for %v ", ds);
-                value = janet_wrap_nil();
             }
             break;
         }
+        case JANET_FIBER: {
+            /* Bit of a hack to allow iterating over fibers. */
+            if (janet_equals(key, janet_wrap_integer(0))) {
+                return janet_unwrap_fiber(ds)->last_value;
+            } else {
+                janet_panicf("expected key 0, got %v", key);
+            }
+        }
     }
     return value;
 }
 
+Janet janet_get(Janet ds, Janet key) {
+    JanetType t = janet_type(ds);
+    switch (t) {
+        default:
+            return janet_wrap_nil();
+        case JANET_STRING:
+        case JANET_SYMBOL:
+        case JANET_KEYWORD: {
+            if (!janet_checkint(key)) return janet_wrap_nil();
+            int32_t index = janet_unwrap_integer(key);
+            if (index < 0) return janet_wrap_nil();
+            const uint8_t *str = janet_unwrap_string(ds);
+            if (index >= janet_string_length(str)) return janet_wrap_nil();
+            return janet_wrap_integer(str[index]);
+        }
+        case JANET_ABSTRACT: {
+            Janet value;
+            void *abst = janet_unwrap_abstract(ds);
+            JanetAbstractType *type = (JanetAbstractType *)janet_abstract_type(abst);
+            if (!type->get) return janet_wrap_nil();
+            if ((type->get)(abst, key, &value))
+                return value;
+            return janet_wrap_nil();
+        }
+        case JANET_ARRAY:
+        case JANET_TUPLE:
+        case JANET_BUFFER: {
+            if (!janet_checkint(key)) return janet_wrap_nil();
+            int32_t index = janet_unwrap_integer(key);
+            if (index < 0) return janet_wrap_nil();
+            if (t == JANET_ARRAY) {
+                JanetArray *a = janet_unwrap_array(ds);
+                if (index >= a->count) return janet_wrap_nil();
+                return a->data[index];
+            } else if (t == JANET_BUFFER) {
+                JanetBuffer *b = janet_unwrap_buffer(ds);
+                if (index >= b->count) return janet_wrap_nil();
+                return janet_wrap_integer(b->data[index]);
+            } else {
+                const Janet *t = janet_unwrap_tuple(ds);
+                if (index >= janet_tuple_length(t)) return janet_wrap_nil();
+                return t[index];
+            }
+        }
+        case JANET_TABLE: {
+            return janet_table_get(janet_unwrap_table(ds), key);
+        }
+        case JANET_STRUCT: {
+            const JanetKV *st = janet_unwrap_struct(ds);
+            return janet_struct_get(st, key);
+        }
+        case JANET_FIBER: {
+            /* Bit of a hack to allow iterating over fibers. */
+            if (janet_equals(key, janet_wrap_integer(0))) {
+                return janet_unwrap_fiber(ds)->last_value;
+            } else {
+                return janet_wrap_nil();
+            }
+        }
+    }
+}
+
 Janet janet_getindex(Janet ds, int32_t index) {
     Janet value;
     if (index < 0) janet_panic("expected non-negative index");
     switch (janet_type(ds)) {
         default:
             janet_panicf("expected %T, got %v", JANET_TFLAG_LENGTHABLE, ds);
-            value = janet_wrap_nil();
             break;
         case JANET_STRING:
         case JANET_SYMBOL:
@@ -274,9 +607,17 @@ Janet janet_getindex(Janet ds, int32_t index) {
         case JANET_ABSTRACT: {
             JanetAbstractType *type = (JanetAbstractType *)janet_abstract_type(janet_unwrap_abstract(ds));
             if (type->get) {
-                value = (type->get)(janet_unwrap_abstract(ds), janet_wrap_integer(index));
+                if (!(type->get)(janet_unwrap_abstract(ds), janet_wrap_integer(index), &value))
+                    value = janet_wrap_nil();
             } else {
                 janet_panicf("no getter for %v ", ds);
+            }
+            break;
+        }
+        case JANET_FIBER: {
+            if (index == 0) {
+                value = janet_unwrap_fiber(ds)->last_value;
+            } else {
                 value = janet_wrap_nil();
             }
             break;
@@ -289,7 +630,6 @@ int32_t janet_length(Janet x) {
     switch (janet_type(x)) {
         default:
             janet_panicf("expected %T, got %v", JANET_TFLAG_LENGTHABLE, x);
-            return 0;
         case JANET_STRING:
         case JANET_SYMBOL:
         case JANET_KEYWORD:
@@ -304,6 +644,38 @@ int32_t janet_length(Janet x) {
             return janet_struct_length(janet_unwrap_struct(x));
         case JANET_TABLE:
             return janet_unwrap_table(x)->count;
+        case JANET_ABSTRACT: {
+            Janet argv[1] = { x };
+            Janet len = janet_mcall("length", 1, argv);
+            if (!janet_checkint(len))
+                janet_panicf("invalid integer length %v", len);
+            return janet_unwrap_integer(len);
+        }
+    }
+}
+
+Janet janet_lengthv(Janet x) {
+    switch (janet_type(x)) {
+        default:
+            janet_panicf("expected %T, got %v", JANET_TFLAG_LENGTHABLE, x);
+        case JANET_STRING:
+        case JANET_SYMBOL:
+        case JANET_KEYWORD:
+            return janet_wrap_integer(janet_string_length(janet_unwrap_string(x)));
+        case JANET_ARRAY:
+            return janet_wrap_integer(janet_unwrap_array(x)->count);
+        case JANET_BUFFER:
+            return janet_wrap_integer(janet_unwrap_buffer(x)->count);
+        case JANET_TUPLE:
+            return janet_wrap_integer(janet_tuple_length(janet_unwrap_tuple(x)));
+        case JANET_STRUCT:
+            return janet_wrap_integer(janet_struct_length(janet_unwrap_struct(x)));
+        case JANET_TABLE:
+            return janet_wrap_integer(janet_unwrap_table(x)->count);
+        case JANET_ABSTRACT: {
+            Janet argv[1] = { x };
+            return janet_mcall("length", 1, argv);
+        }
     }
 }
 
@@ -312,7 +684,6 @@ void janet_putindex(Janet ds, int32_t index, Janet value) {
         default:
             janet_panicf("expected %T, got %v",
                          JANET_TFLAG_ARRAY | JANET_TFLAG_BUFFER | JANET_TFLAG_TABLE, ds);
-            break;
         case JANET_ARRAY: {
             JanetArray *array = janet_unwrap_array(ds);
             if (index >= array->count) {
@@ -330,7 +701,7 @@ void janet_putindex(Janet ds, int32_t index, Janet value) {
                 janet_buffer_ensure(buffer, index + 1, 2);
                 buffer->count = index + 1;
             }
-            buffer->data[index] = janet_unwrap_integer(value);
+            buffer->data[index] = (uint8_t)(janet_unwrap_integer(value) & 0xFF);
             break;
         }
         case JANET_TABLE: {
@@ -355,13 +726,9 @@ void janet_put(Janet ds, Janet key, Janet value) {
         default:
             janet_panicf("expected %T, got %v",
                          JANET_TFLAG_ARRAY | JANET_TFLAG_BUFFER | JANET_TFLAG_TABLE, ds);
-            break;
         case JANET_ARRAY: {
-            int32_t index;
             JanetArray *array = janet_unwrap_array(ds);
-            if (!janet_checkint(key)) janet_panicf("expected integer key, got %v", key);
-            index = janet_unwrap_integer(key);
-            if (index < 0 || index == INT32_MAX) janet_panicf("bad integer key, got %v", key);
+            int32_t index = getter_checkint(key, INT32_MAX - 1);
             if (index >= array->count) {
                 janet_array_setcount(array, index + 1);
             }
@@ -369,11 +736,8 @@ void janet_put(Janet ds, Janet key, Janet value) {
             break;
         }
         case JANET_BUFFER: {
-            int32_t index;
             JanetBuffer *buffer = janet_unwrap_buffer(ds);
-            if (!janet_checkint(key)) janet_panicf("expected integer key, got %v", key);
-            index = janet_unwrap_integer(key);
-            if (index < 0 || index == INT32_MAX) janet_panicf("bad integer key, got %v", key);
+            int32_t index = getter_checkint(key, INT32_MAX - 1);
             if (!janet_checkint(value))
                 janet_panicf("can only put integers in buffers, got %v", value);
             if (index >= buffer->count) {

src/core/vector.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -21,6 +21,7 @@
 */
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include "vector.h"
 #include "util.h"
 #endif
@@ -30,34 +31,24 @@ void *janet_v_grow(void *v, int32_t increment, int32_t itemsize) {
     int32_t dbl_cur = (NULL != v) ? 2 * janet_v__cap(v) : 0;
     int32_t min_needed = janet_v_count(v) + increment;
     int32_t m = dbl_cur > min_needed ? dbl_cur : min_needed;
-    int32_t *p = (int32_t *) realloc(v ? janet_v__raw(v) : 0, itemsize * m + sizeof(int32_t) * 2);
-    if (NULL != p) {
-        if (!v) p[1] = 0;
-        p[0] = m;
-        return p + 2;
-    } else {
-        {
-            JANET_OUT_OF_MEMORY;
-        }
-        return (void *)(2 * sizeof(int32_t));
-    }
+    size_t newsize = ((size_t) itemsize) * m + sizeof(int32_t) * 2;
+    int32_t *p = (int32_t *) janet_srealloc(v ? janet_v__raw(v) : 0, newsize);
+    if (!v) p[1] = 0;
+    p[0] = m;
+    return p + 2;
 }
 
 /* Convert a buffer to normal allocated memory (forget capacity) */
 void *janet_v_flattenmem(void *v, int32_t itemsize) {
     int32_t *p;
-    int32_t sizen;
     if (NULL == v) return NULL;
-    sizen = itemsize * janet_v__cnt(v);
-    p = malloc(sizen);
+    size_t size = (size_t) itemsize * janet_v__cnt(v);
+    p = janet_malloc(size);
     if (NULL != p) {
-        memcpy(p, v, sizen);
+        safe_memcpy(p, v, size);
         return p;
     } else {
-        {
-            JANET_OUT_OF_MEMORY;
-        }
-        return NULL;
+        JANET_OUT_OF_MEMORY;
     }
 }
 

src/core/vector.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2019 Calvin Rose
+* Copyright (c) 2022 Calvin Rose
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
@@ -24,6 +24,7 @@
 #define JANET_VECTOR_H_defined
 
 #ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
 #endif
 
@@ -33,16 +34,15 @@
 */
 
 /* This is mainly used code such as the assembler or compiler, which
- * need vector like data structures that are not garbage collected
- * and used only from C */
+ * need vector like data structures that are only garbage collected in case
+ * of an error, and normally rely on malloc/free. */
 
-#define janet_v_free(v)         (((v) != NULL) ? (free(janet_v__raw(v)), 0) : 0)
+#define janet_v_free(v)         (((v) != NULL) ? (janet_sfree(janet_v__raw(v)), 0) : 0)
 #define janet_v_push(v, x)      (janet_v__maybegrow(v, 1), (v)[janet_v__cnt(v)++] = (x))
 #define janet_v_pop(v)          (janet_v_count(v) ? janet_v__cnt(v)-- : 0)
 #define janet_v_count(v)        (((v) != NULL) ? janet_v__cnt(v) : 0)
 #define janet_v_last(v)         ((v)[janet_v__cnt(v) - 1])
 #define janet_v_empty(v)        (((v) != NULL) ? (janet_v__cnt(v) = 0) : 0)
-#define janet_v_copy(v)         (janet_v_copymem((v), sizeof(*(v))))
 #define janet_v_flatten(v)      (janet_v_flattenmem((v), sizeof(*(v))))
 
 #define janet_v__raw(v) ((int32_t *)(v) - 2)
@@ -55,7 +55,6 @@
 
 /* Actual functions defined in vector.c */
 void *janet_v_grow(void *v, int32_t increment, int32_t itemsize);
-void *janet_v_copymem(void *v, int32_t itemsize);
 void *janet_v_flattenmem(void *v, int32_t itemsize);
 
 #endif