Prepare for 1.19.1 release.

Support sending output to a function

.builds/freebsd.yml

@@ -9,4 +9,3 @@ tasks:
     gmake
     gmake test
     sudo gmake install
-    gmake test-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/meson.yml

@@ -1,12 +0,0 @@
-image: openbsd/latest
-sources:
-- https://git.sr.ht/~bakpakin/janet
-packages:
-- meson
-tasks:
-- build: |
-    cd janet
-    meson setup build --buildtype=release
-    cd build
-    ninja
-    ninja test

.builds/meson_min.yml

@@ -1,23 +0,0 @@
-image: openbsd/latest
-sources:
-- https://git.sr.ht/~bakpakin/janet
-packages:
-- meson
-tasks:
-- build: |
-    cd janet
-    meson setup build --buildtype=release
-    cd build
-    meson configure -Dsingle_threaded=true
-    meson configure -Dnanbox=false
-    meson configure -Ddynamic_modules=false
-    meson configure -Ddocstrings=false
-    meson configure -Dnet=false
-    meson configure -Dsourcemaps=false
-    meson configure -Dpeg=false
-    meson configure -Dassembler=false
-    meson configure -Dint_types=false
-    meson configure -Dtyped_arrays=false
-    meson configure -Dreduced_os=true
-    meson configure -Dprf=false
-    ninja # will not pass tests but should build

.builds/openbsd.yml

@@ -3,10 +3,30 @@ sources:
 - https://git.sr.ht/~bakpakin/janet
 packages:
 - gmake
+- meson
 tasks:
-- build: |
+- 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

@@ -0,0 +1,10 @@
+*.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 +1,54 @@
+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: |
+            ./*.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

@@ -32,6 +32,10 @@ lockfile.janet
 # Local directory for testing
 local
 
+# Common test files I use.
+temp.janet
+scratch.janet
+
 # Emscripten
 *.bc
 janet.js
@@ -43,6 +47,7 @@ janet.wasm
 
 # Generate test files
 *.out
+.orig
 
 # Tools
 xxd
@@ -50,6 +55,7 @@ xxd.exe
 
 # VSCode
 .vs
+.clangd
 
 # Swap files
 *.swp
@@ -61,6 +67,10 @@ tags
 vgcore.*
 *.out.*
 
+# Wix artifacts
+*.msi
+*.wixpdb
+
 # Created by https://www.gitignore.io/api/c
 
 ### C ###
@@ -131,3 +141,6 @@ compile_commands.json
 CTestTestfile.cmake
 
 # End of https://www.gitignore.io/api/cmake
+
+# Astyle
+*.orig

.travis.yml

@@ -1,25 +0,0 @@
-language: c
-script:
-- make
-- make test
-- sudo make install
-- make test-install
-- 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

@@ -1,7 +1,285 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
-## 1.10.1 - 2020-06-14
+## 1.19.1 - 2021-12-04
+- Add an optional `prefix` paramater 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.

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
 
@@ -30,8 +29,7 @@ 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.
 
@@ -75,4 +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) 2020 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) 2020 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
@@ -27,19 +27,28 @@ PREFIX?=/usr/local
 INCLUDEDIR?=$(PREFIX)/include
 BINDIR?=$(PREFIX)/bin
 LIBDIR?=$(PREFIX)/lib
-JANET_BUILD?="\"$(shell git log --pretty=format:'%h' -n 1 || echo local)\""
+JANET_BUILD?="\"$(shell git log --pretty=format:'%h' -n 1 2> /dev/null || echo local)\""
 CLIBS=-lm -lpthread
 JANET_TARGET=build/janet
 JANET_LIBRARY=build/libjanet.so
 JANET_STATIC_LIBRARY=build/libjanet.a
 JANET_PATH?=$(LIBDIR)/janet
-MANPATH?=$(PREFIX)/share/man/man1/
-PKG_CONFIG_PATH?=$(LIBDIR)/pkgconfig
+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:=$(CFLAGS) -std=c99 -Wall -Wextra -Isrc/include -Isrc/conf -fPIC -O2 -fvisibility=hidden
-LDFLAGS:=$(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 "$(LIBDIR)"
@@ -53,14 +62,21 @@ ifeq ($(UNAME), Darwin)
 else ifeq ($(UNAME), Linux)
 	CLIBS:=$(CLIBS) -lrt -ldl
 endif
+
 # For other unix likes, add flags here!
 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 #####
@@ -90,6 +106,7 @@ 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 \
@@ -104,14 +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/thread.c \
 				   src/core/tuple.c \
-				   src/core/typedarray.c \
 				   src/core/util.c \
 				   src/core/value.c \
 				   src/core/vector.c \
@@ -131,54 +147,56 @@ JANET_BOOT_HEADERS=src/boot/tests.h
 ##########################################################
 
 JANET_BOOT_OBJECTS=$(patsubst src/%.c,build/%.boot.o,$(JANET_CORE_SOURCES) $(JANET_BOOT_SOURCES))
-BOOT_CFLAGS:=-DJANET_BOOTSTRAP -DJANET_BUILD=$(JANET_BUILD) $(CFLAGS)
 
 $(JANET_BOOT_OBJECTS): $(JANET_BOOT_HEADERS)
 
-build/%.boot.o: src/%.c $(JANET_HEADERS) $(JANET_LOCAL_HEADERS)
+build/%.boot.o: src/%.c $(JANET_HEADERS) $(JANET_LOCAL_HEADERS) Makefile
 	$(CC) $(BOOT_CFLAGS) -o $@ -c $<
 
 build/janet_boot: $(JANET_BOOT_OBJECTS)
 	$(CC) $(BOOT_CFLAGS) -o $@ $(JANET_BOOT_OBJECTS) $(CLIBS)
 
 # Now the reason we bootstrap in the first place
-build/janet.c: build/janet_boot src/boot/boot.janet
-	build/janet_boot . JANET_PATH '$(JANET_PATH)' JANET_HEADERPATH '$(INCLUDEDIR)/janet' > $@
+build/c/janet.c: build/janet_boot src/boot/boot.janet
+	build/janet_boot . JANET_PATH '$(JANET_PATH)' > $@
+	cksum $@
 
 ########################
 ##### Amalgamation #####
 ########################
 
-SONAME=libjanet.so.1.10
+SONAME=libjanet.so.1.19
 
-build/shell.c: src/mainclient/shell.c
+build/c/shell.c: src/mainclient/shell.c
 	cp $< $@
 
-build/janet.h: src/include/janet.h
-	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/janet.c build/janet.h build/janetconf.h
-	$(CC) $(CFLAGS) -c $< -o $@ -I build
+build/janet.o: build/c/janet.c src/conf/janetconf.h src/include/janet.h
+	$(HOSTCC) $(BUILD_CFLAGS) -c $< -o $@
 
-build/shell.o: build/shell.c build/janet.h build/janetconf.h
-	$(CC) $(CFLAGS) -c $< -o $@ -I build
+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
-	$(CC) $(LDFLAGS) $(CFLAGS) -o $@ $^ $(CLIBS)
+	$(HOSTCC) $(LDFLAGS) $(BUILD_CFLAGS) -o $@ $^ $(CLIBS)
 
 $(JANET_LIBRARY): build/janet.o build/shell.o
-	$(CC) $(LDFLAGS) $(CFLAGS) $(SONAME_SETTER)$(SONAME) -shared -o $@ $^ $(CLIBS)
+	$(HOSTCC) $(LDFLAGS) $(BUILD_CFLAGS) $(SONAME_SETTER)$(SONAME) -shared -o $@ $^ $(CLIBS)
 
 $(JANET_STATIC_LIBRARY): build/janet.o build/shell.o
-	$(AR) rcs $@ $^
+	$(HOSTAR) rcs $@ $^
 
 ###################
 ##### Testing #####
 ###################
 
+# Testing assumes HOSTCC=CC
+
 TEST_SCRIPTS=$(wildcard test/suite*.janet)
 
 repl: $(JANET_TARGET)
@@ -195,12 +213,10 @@ 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
-	./$(JANET_TARGET) -k jpm
 
 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
-	$(VALGRIND_COMMAND) ./$(JANET_TARGET) -k jpm
 
 callgrind: $(JANET_TARGET)
 	for f in test/suite*.janet; do valgrind --tool=callgrind ./$(JANET_TARGET) "$$f" || exit; done
@@ -212,13 +228,20 @@ callgrind: $(JANET_TARGET)
 dist: build/janet-dist.tar.gz
 
 build/janet-%.tar.gz: $(JANET_TARGET) \
-	src/include/janet.h src/conf/janetconf.h \
-	jpm.1 janet.1 LICENSE CONTRIBUTING.md $(JANET_LIBRARY) $(JANET_STATIC_LIBRARY) \
-	build/doc.html README.md build/janet.c build/shell.c jpm
-	$(eval JANET_DIST_DIR = "janet-$(shell basename $*)")
-	mkdir -p build/$(JANET_DIST_DIR)
-	cp -r $^ build/$(JANET_DIST_DIR)/
-	cd build && tar -czvf ../$@ $(JANET_DIST_DIR)
+	build/janet.h \
+	janet.1 LICENSE CONTRIBUTING.md $(JANET_LIBRARY) $(JANET_STATIC_LIBRARY) \
+	README.md build/c/janet.c build/c/shell.c
+	mkdir -p build/$(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/$(JANET_DIST_DIR)/man/man1/
+	mkdir -p build/$(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 #####
@@ -233,10 +256,6 @@ build/doc.html: $(JANET_TARGET) tools/gendoc.janet
 ##### Installation #####
 ########################
 
-build/jpm: jpm $(JANET_TARGET)
-	$(JANET_TARGET) tools/patch-jpm.janet jpm build/jpm "--libpath=$(LIBDIR)" "--headerpath=$(INCLUDEDIR)/janet" "--binpath=$(BINDIR)"
-	chmod +x build/jpm
-
 .INTERMEDIATE: build/janet.pc
 build/janet.pc: $(JANET_TARGET)
 	echo 'prefix=$(PREFIX)' > $@
@@ -252,33 +271,41 @@ build/janet.pc: $(JANET_TARGET)
 	echo 'Libs: -L$${libdir} -ljanet' >> $@
 	echo 'Libs.private: $(CLIBS)' >> $@
 
-install: $(JANET_TARGET) build/janet.pc build/jpm
+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 -rf $(JANET_HEADERS) '$(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)/$(SONAME)
-	cp -rf build/jpm '$(DESTDIR)$(BINDIR)'
-	mkdir -p '$(DESTDIR)$(MANPATH)'
-	cp janet.1 '$(DESTDIR)$(MANPATH)'
-	cp jpm.1 '$(DESTDIR)$(MANPATH)'
-	mkdir -p '$(DESTDIR)$(PKG_CONFIG_PATH)'
-	cp build/janet.pc '$(DESTDIR)$(PKG_CONFIG_PATH)/janet.pc'
+	mkdir -p '$(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)$(BINDIR)/janet'
-	-rm '$(DESTDIR)$(BINDIR)/jpm'
 	-rm -rf '$(DESTDIR)$(INCLUDEDIR)/janet'
 	-rm -rf '$(DESTDIR)$(LIBDIR)'/libjanet.*
-	-rm '$(DESTDIR)$(PKG_CONFIG_PATH)/janet.pc'
-	-rm '$(DESTDIR)$(MANPATH)/janet.1'
-	-rm '$(DESTDIR)$(MANPATH)/jpm.1'
+	-rm '$(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
 
 #################
@@ -292,23 +319,16 @@ 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 .cache .manifests \
-		&& jpm --verbose build \
-		&& jpm --verbose test \
-		&& build/testexec \
-		&& jpm --verbose quickbin testexec.janet build/testexec2 \
-		&& build/testexec2 \
-		&& mkdir -p modpath \
-		&& jpm --verbose --testdeps --modpath=./modpath install https://github.com/janet-lang/json.git
-	cd test/install && jpm --verbose --test --modpath=./modpath install https://github.com/janet-lang/jhydro.git
-	cd test/install && jpm --verbose --test --modpath=./modpath install https://github.com/janet-lang/path.git
-	cd test/install && jpm --verbose --test --modpath=./modpath install https://github.com/janet-lang/argparse.git
+	echo "JPM has been removed from default install."
 
 help:
 	@echo
@@ -333,4 +353,4 @@ help:
 	@echo
 
 .PHONY: clean install repl debug valgrind test \
-	valtest dist uninstall docs grammar format help
+	valtest dist uninstall docs grammar format help compile-commands

README.md

@@ -1,11 +1,8 @@
 [![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.yml.svg)](https://builds.sr.ht/~bakpakin/janet/freebsd.yml?)
-[![builds.sr.ht status](https://builds.sr.ht/~bakpakin/janet/openbsd.yml.svg)](https://builds.sr.ht/~bakpakin/janet/openbsd.yml?)
-[![builds.sr.ht status](https://builds.sr.ht/~bakpakin/janet/meson.yml.svg)](https://builds.sr.ht/~bakpakin/janet/meson.yml?)
-[![builds.sr.ht status](https://builds.sr.ht/~bakpakin/janet/meson_min.yml.svg)](https://builds.sr.ht/~bakpakin/janet/meson_min.yml?)
+[![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">
 
@@ -14,11 +11,14 @@ 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 can 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
@@ -29,24 +29,27 @@ 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)
 * 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
+* 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
@@ -56,17 +59,17 @@ Lua, but smaller than GNU Guile or Python.
 * 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-bindings)` function. You
-can also use the `(doc)` macro with no arguments if you are in the repl
+can also use the `(doc)` macro with no arguments if you are in the REPL
 to show bound symbols.
 
 ## Source
@@ -92,7 +95,7 @@ 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`.
 
 ```
@@ -104,7 +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`.
 
@@ -115,6 +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#)
@@ -131,11 +139,11 @@ Now you should have an `.msi`. You can run `build_win install` to install the `.
 
 ### Meson
 
-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
+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 cross-compilation.
 
 For the impatient, building with Meson is as follows. The options provided to
 `meson setup` below emulate Janet's Makefile.
@@ -167,16 +175,16 @@ 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. If you just want
+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
@@ -194,18 +202,18 @@ Options are:
   -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)
+  -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
+  -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` and `man jpm` to get usage information.
+If installed, you can also run `man janet` to get usage information.
 
 ## Embedding
 
@@ -227,21 +235,65 @@ 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 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 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
+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

@@ -1,58 +0,0 @@
-version: build-{build}
-clone_folder: c:\projects\janet
-image:
-- Visual Studio 2019
-configuration:
-- Release
-platform:
-- x64
-- x86
-environment:
-  matrix:
-  - arch: Win64
-matrix:
-  fast_finish: true
-
-# skip unsupported combinations
-init:
-    - call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvarsall.bat" %platform%
-
-install:
-    - set JANET_BUILD=%appveyor_repo_commit:~0,7%
-    - build_win all
-    - refreshenv
-    # We need to reload vcvars after refreshing
-    - call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvarsall.bat" %platform%
-    - build_win test-install
-    - set janet_outname=%appveyor_repo_tag_name%
-    - if "%janet_outname%"=="" set /P janet_outname=<build\version.txt
-build: off
-
-artifacts:
-    - name: janet.c
-      path: dist\janet.c
-      type: File
-    - name: janet.h
-      path: dist\janet.h
-      type: File
-    - name: janetconf.h
-      path: dist\janetconf.h
-      type: File
-    - name: shell.c
-      path: dist\shell.c
-      type: File
-    - name: "janet-$(janet_outname)-windows-%platform%"
-      path: dist
-      type: Zip
-    - path: "janet-$(janet_outname)-windows-%platform%-installer.msi"
-      type: File
-
-deploy:
-  description: 'The Janet Programming Language.'
-  provider: GitHub
-  auth_token:
-    secure: lwEXy09qhj2jSH9s1C/KvCkAUqJSma8phFR+0kbsfUc3rVxpNK5uD3z9Md0SjYRx
-  artifact: /(janet|shell).*/
-  draft: true
-  on:
-      APPVEYOR_REPO_TAG: true

build_win.bat

@@ -14,13 +14,18 @@
 @if "%1"=="test" goto TEST
 @if "%1"=="dist" goto DIST
 @if "%1"=="install" goto INSTALL
-@if "%1"=="test-install" goto TESTINSTALL
 @if "%1"=="all" goto ALL
 
 @rem Set compile and link options here
 @setlocal
+
+@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
+
 @set JANET_LINK_STATIC=lib /nologo
 
 @rem Add janet build tag
@@ -28,10 +33,10 @@ if not "%JANET_BUILD%" == "" (
     @set JANET_COMPILE=%JANET_COMPILE% /DJANET_BUILD="\"%JANET_BUILD%\""
 )
 
-mkdir build
-mkdir build\core
-mkdir build\mainclient
-mkdir build\boot
+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 bootstrap interpreter
 for %%f in (src\core\*.c) do (
@@ -44,10 +49,10 @@ for %%f in (src\boot\*.c) do (
 )
 %JANET_LINK% /out:build\janet_boot.exe build\boot\*.obj
 @if errorlevel 1 goto :BUILDFAIL
-build\janet_boot . > build\janet.c
+build\janet_boot . > build\c\janet.c
 
 @rem Build the sources
-%JANET_COMPILE% /Fobuild\janet.obj build\janet.c
+%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
@@ -82,7 +87,7 @@ exit /b 1
 @echo command prompt.
 exit /b 0
 
-@rem Clean build artifacts 
+@rem Clean build artifacts
 :CLEAN
 del *.exe *.lib *.exp
 rd /s /q build
@@ -102,8 +107,9 @@ exit /b 0
 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
@@ -112,13 +118,10 @@ 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\conf\janetconf.h dist\janetconf.h
+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
 
-copy .\jpm dist\jpm
-copy tools\jpm.bat dist\jpm.bat
-
 @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
@@ -147,34 +150,6 @@ FOR %%a in (janet-*-windows-*-installer.msi) DO (
 )
 exit /b 0
 
-@rem Test the installation.
-:TESTINSTALL
-pushd test\install
-call jpm clean
-@if errorlevel 1 goto :TESTINSTALLFAIL
-call jpm test
-@if errorlevel 1 goto :TESTINSTALLFAIL
-call jpm --verbose --modpath=. install https://github.com/janet-lang/json.git
-@if errorlevel 1 goto :TESTINSTALLFAIL
-call build\testexec
-@if errorlevel 1 goto :TESTINSTALLFAIL
-call jpm --verbose quickbin testexec.janet build\testexec2.exe
-@if errorlevel 1 goto :TESTINSTALLFAIL
-call build\testexec2.exe
-@if errorlevel 1 goto :TESTINSTALLFAIL
-call jpm --verbose --test --modpath=. install https://github.com/janet-lang/jhydro.git
-@if errorlevel 1 goto :TESTINSTALLFAIL
-call jpm --verbose --test --modpath=. install https://github.com/janet-lang/path.git
-@if errorlevel 1 goto :TESTINSTALLFAIL
-call jpm --verbose --test --modpath=. install https://github.com/janet-lang/argparse.git
-@if errorlevel 1 goto :TESTINSTALLFAIL
-popd
-exit /b 0
-
-:TESTINSTALLFAIL
-popd
-goto :TESTFAIL
-
 @rem build, test, dist, install. Useful for local dev.
 :ALL
 call %0 build

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 ")")])
+  (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/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) {

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

@@ -1,73 +0,0 @@
-# naive matrix implementation for testing typed array
-
-(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 mat j) i))
-
-
-(defn tarray/print [arr]
-  (def size (tarray/length arr))
-  (prinf "[%2i]" size)
-  (for i 0 size
-    (prinf " %+6.3f " (arr i)))
-  (print))
-
-(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/tcpserver.janet

@@ -6,8 +6,15 @@
     (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)))
 
-(net/server "127.0.0.1" "8000" handler)
+# 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/threads.janet

@@ -1,68 +0,0 @@
-(defn worker-main
-  "Sends 11 messages back to parent"
-  [parent]
-  (def name (thread/receive))
-  (def interval (thread/receive))
-  (for i 0 10
-    (os/sleep interval)
-    (:send parent (string/format "thread %s wakeup no. %d" name i)))
-  (:send parent name))
-
-(defn make-worker
-  [name interval]
-  (-> (thread/new worker-main)
-      (:send name)
-      (:send interval)))
-
-(def bob (make-worker "bob" 0.02))
-(def joe (make-worker "joe" 0.03))
-(def sam (make-worker "sam" 0.05))
-
-# Receive out of order
-(for i 0 33
-  (print (thread/receive)))
-
-#
-# Recursive Thread Tree - should pause for a bit, and then print a cool zigzag.
-#
-
-(def rng (math/rng (os/cryptorand 16)))
-
-(defn choose [& xs]
-  (in xs (:int rng (length xs))))
-
-(defn worker-tree
-  [parent]
-  (def name (thread/receive))
-  (def depth (thread/receive))
-  (if (< depth 5)
-    (do
-    (defn subtree []
-      (-> (thread/new worker-tree)
-          (:send (string name "/" (choose "bob" "marley" "harry" "suki" "anna" "yu")))
-          (:send (inc depth))))
-    (let [l (subtree)
-          r (subtree)
-          lrep (thread/receive)
-          rrep (thread/receive)]
-      (:send parent [name ;lrep ;rrep])))
-    (do
-      (:send parent [name]))))
-
-(-> (thread/new worker-tree) (:send "adam") (:send 0))
-(def lines (thread/receive))
-(map print lines)
-
-#
-# Receive timeout
-#
-
-(def slow (make-worker "slow-loras" 0.5))
-(for i 0 50
-  (try
-    (let [msg (thread/receive 0.1)]
-      (print "\n" msg))
-    ([err] (prin ".") (:flush stdout))))
-
-(print "\ndone timing, timeouts ending.")
-(try (while true (print (thread/receive))) ([err] (print "done")))

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.1

@@ -3,11 +3,14 @@
 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]
 .BR script
 .BR args ...
@@ -64,6 +67,10 @@ Move cursor to the beginning of input line.
 .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.
@@ -100,6 +107,10 @@ Delete one word before the cursor.
 .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.
@@ -152,6 +163,11 @@ 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
@@ -167,6 +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,
@@ -194,11 +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
@@ -213,5 +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>

jpm.1

@@ -1,254 +0,0 @@
-.TH JPM 1
-.SH NAME
-jpm \- the Janet Project Manager, a build tool for Janet 
-.SH SYNOPSIS
-.B jpm
-[\fB\-\-flag ...\fR]
-[\fB\-\-option=value ...\fR]
-.IR command
-.IR args ...
-.SH DESCRIPTION
-jpm is the build tool that ships with a standard Janet install. It is
-used for building Janet projects, installing dependencies, installing
-projects, building native modules, and exporting your Janet project to a
-standalone executable. Although not required for working with Janet, it
-removes much of the boilerplate with installing dependencies and
-building native modules. jpm requires only Janet to run, and uses git
-to install dependencies (jpm will work without git installed).
-.SH DOCUMENTATION
-
-jpm has several subcommands, each used for managing either a single Janet project or
-all Janet modules installed on the system. Global commands, those that manage modules
-at the system level, do things like install and uninstall packages, as well as clear the cache.
-More interesting are the local commands. For more information on jpm usage, see https://janet-lang.org/docs/index.html
-
-.SH FLAGS
-
-.TP
-.BR \-\-nocolor
-Disable color in the jpm debug repl.
-
-.TP
-.BR \-\-verbose
-Print detailed messages of what jpm is doing, including compilation commands and other shell commands.
-
-.TP
-.BR \-\-test
-If passed to jpm install, runs tests before installing. Will run tests recursively on dependencies.
-
-.TP
-.BR \-\-offline
-Prevents jpm from going to network to get dependencies - all dependencies should be in the cache or this command will fail.
-Use this flag with the deps and update-pkgs subcommands. This is not a surefire way to prevent a build script from accessing
-the network, for example, a build script that invokes curl will still have network access.
-
-.SH OPTIONS
-
-.TP
-.BR \-\-modpath=/some/path
-Set the path to install modules to. Defaults to $JANET_MODPATH, $JANET_PATH, or (dyn :syspath) in that order. You most likely don't need this.
-
-.TP
-.BR \-\-headerpath=/some/path
-Set the path the jpm will include when building C source code. This lets
-you specify the location of janet.h and janetconf.h on your system. On a
-normal install, this option is not needed.
-
-.TP
-.BR \-\-binpath=/some/path
-Set the path that jpm will install scripts and standalone executables to. Executables
-defined via declare-execuatble or scripts declared via declare-binscript will be installed
-here when jpm install is run. Defaults to $JANET_BINPATH, or a reasonable default for the system.
-See JANET_BINPATH for more.
-
-.TP
-.BR \-\-libpath=/some/path
-Sets the path jpm will use to look for libjanet.a for building standalone executables. libjanet.so
-is \fBnot\fR used for building native modules or standalone executables, only
-for linking into applications that want to embed janet as a dynamic module.
-Linking statically might be a better idea, even in that case. Defaults to
-$JANET_LIBPATH, or a reasonable default. See JANET_LIBPATH for more.
-
-.TP
-.BR \-\-compiler=$CC
-Sets the compiler used for compiling native modules and standalone executables. Defaults
-to cc.
-
-.TP
-.BR \-\-linker
-Sets the linker used to create native modules and executables. Only used on windows, where
-it defaults to link.exe.
-
-.TP
-.BR \-\-pkglist=https://github.com/janet-lang/pkgs.git
-Sets the git repository for the package listing used to resolve shorthand package names.
-
-.TP
-.BR \-\-archiver=$AR
-Sets the command used for creating static libraries, use for linking into the standalone executable.
-Native modules are compiled twice, once a normal native module (shared object), and once as an
-archive. Defaults to ar.
-
-.SH COMMANDS
-.TP
-.BR help
-Shows the usage text and exits immediately.
-
-.TP
-.BR build
-Builds all artifacts specified in the project.janet file in the current directory. Artifacts will
-be created in the ./build/ directory.
-
-.TP
-.BR install\ [\fBrepo...\fR]
-
-When run with no arguments, installs all installable artifacts in the current project to
-the current JANET_MODPATH for modules and JANET_BINPATH for executables and scripts. Can also
-take an optional git repository URL and will install all artifacts in that repository instead.
-When run with an argument, install does not need to be run from a jpm project directory. Will also
-install multiple dependencies in one command.
-
-.TP
-.BR uninstall\ [\fBname...\fR]
-Uninstall a project installed with install. uninstall expects the name of the project, not the
-repository url, path to installed file or executable name. The name of the project must be specified
-at the top of the project.janet file in the declare-project form. If no name is given, uninstalls
-the current project if installed. Will also uninstall multiple packages in one command.
-
-.TP
-.BR clean
-Remove all artifacts created by jpm. This just deletes the build folder.
-
-.TP
-.BR test
-Runs jpm tests. jpm will run all janet source files in the test directory as tests. A test
-is considered failing if it exits with a non-zero exit code.
-
-.TP
-.BR deps
-Install all dependencies that this project requires recursively. jpm does not
-resolve dependency issues, like conflicting versions of the same module are required, or
-different modules with the same name. Dependencies are installed with git, so deps requires
-git to be on the PATH.
-
-.TP
-.BR clear-cache
-jpm caches git repositories that are needed to install modules from a remote
-source in a global cache ($JANET_PATH/.cache). If these dependencies are out of
-date or too large, clear-cache will remove the cache and jpm will rebuild it
-when needed. clear-cache is a global command, so a project.janet is not
-required.
-
-.TP
-.BR clear-manifest
-jpm creates a manifest directory that contains a list of all installed files.
-By deleting this directory, jpm will think that nothing is installed and will
-try reinstalling everything on the jpm deps or jpm load-lockfile commands. Be careful with
-this command, as it may leave extra files on your system and shouldn't be needed
-most of the time in a healthy install.
-
-.TP
-.BR run\ [\fBrule\fR]
-Run a given rule defined in project.janet. Project definitions files (project.janet) usually
-contain a few artifact declarations, which set up rules that jpm can then resolve, or execute.
-A project.janet can also create custom rules to create arbitrary files or run arbitrary code, much
-like make. run will run a single rule or build a single file.
-
-.TP
-.BR rules
-List all rules that can be run via run. This is useful for exploring rules in the project.
-
-.TP
-.BR rule-tree\ [\fBroot\fR] [\fdepth\fR]
-Show rule dependency tree in a pretty format. Optionally provide a rule to use as the tree
-root, as well as a max depth to print. By default, prints the full tree for all rules. This
-can be quite long, so it is recommended to give a root rule.
-
-.TP
-.BR show-paths
-Show all of the paths used when installing and building artifacts.
-
-.TP
-.BR update-pkgs
-Update the package listing by installing the 'pkgs' package. Same as jpm install pkgs
-
-.TP
-.BR quickbin [\fBentry\fR] [\fBexecutable\fR]
-Create a standalone, statically linked executable from a Janet source file that contains a main function.
-The main function is the entry point of the program and will receive command line arguments
-as function arguments. The entry file can import other modules, including native C modules, and
-jpm will attempt to include the dependencies into the generated executable.
-
-.TP
-.BR debug-repl
-Load the current project.janet file and start a repl in it's environment. This lets a user better
-debug the project file, as well as run rules manually.
-
-.TP
-.BR make-lockfile\ [\fBfilename\fR]
-Create a lockfile. A lockfile is a record that describes what dependencies were installed at the
-time of the lockfile's creation, including exact versions. A lockfile can then be later used
-to set up that environment on a different machine via load-lockfile. By default, the lockfile
-is created at lockfile.jdn, although any path can be used.
-
-.TP
-.BR load-lockfile\ [\fBfilename\fR]
-Install dependencies from a lockfile previously created with make-lockfile. By default, will look
-for a lockfile at lockfile.jdn, although any path can be used.
-
-.SH ENVIRONMENT
-
-.B JANET_PATH
-.RS
-The location to look for Janet libraries. This is the only environment variable Janet needs to
-find native and source code modules. If no JANET_PATH is set, Janet will look in
-the default location set at compile time, which can be determined with (dyn :syspath)
-.RE
-
-.B JANET_MODPATH
-.RS
-The location that jpm will use to install libraries to. Defaults to JANET_PATH, but you could
-set this to a different directory if you want to. Doing so would let you import Janet modules
-on the normal system path (JANET_PATH or (dyn :syspath)), but install to a different directory. It is also a more reliable way to install
-This variable is overwritten by the --modpath=/some/path if it is provided.
-.RE
-
-.B JANET_HEADERPATH
-.RS
-The location that jpm will look for janet header files (janet.h and janetconf.h) that are used
-to build native modules and standalone executables. If janet.h and janetconf.h are available as
-default includes on your system, this value is not required. If not provided, will default to
-<jpm script location>/../include/janet. The --headerpath=/some/path option will override this
-variable.
-.RE
-
-.B JANET_LIBPATH
-.RS
-Similar to JANET_HEADERPATH, this path is where jpm will look for
-libjanet.a for creating standalong executables. This does not need to be
-set on a normal install. 
-If not provided, this will default to <jpm script location>/../lib.
-The --libpath=/some/path option will override this variable.
-.RE
-
-.B JANET_BINPATH
-.RS
-The directory where jpm will install binary scripts and executables to.
-Defaults to
-(dyn :syspath)/bin
-The --binpath=/some/path will override this variable.
-.RE
-
-.B JANET_PKGLIST
-.RS
-The git repository URL that contains a listing of packages. This allows installing packages with shortnames, which
-is mostly a convenience. However, package dependencies can use short names, package listings
-can be used to choose a particular set of dependency versions for a whole project.
-
-.B JANET_GIT
-.RS
-An optional path to a git executable to use to clone git dependencies. By default, uses "git" on the current $PATH. You shouldn't need to set this
-if you have a normal install of git.
-
-.SH AUTHOR
-Written by Calvin Rose <calsrose@gmail.com>

meson.build

@@ -1,4 +1,4 @@
-# Copyright (c) 2020 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
@@ -19,8 +19,8 @@
 # IN THE SOFTWARE.
 
 project('janet', 'c',
-  default_options : ['c_std=c99', 'b_lundef=false', 'default_library=both'],
-  version : '1.10.0')
+  default_options : ['c_std=c99', 'build.c_std=c99', 'b_lundef=false', 'default_library=both'],
+  version : '1.19.1')
 
 # Global settings
 janet_path = join_paths(get_option('prefix'), get_option('libdir'), 'janet')
@@ -30,10 +30,11 @@ 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')
 
 # Link options
-if build_machine.system() != 'windows'
+if get_option('default_library') != 'static' and build_machine.system() != 'windows'
     add_project_link_arguments('-rdynamic', language : 'c')
 endif
 
@@ -60,10 +61,10 @@ 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_TYPED_ARRAY', not get_option('typed_array'))
 conf.set('JANET_NO_INT_TYPES', not get_option('int_types'))
-conf.set('JANET_NO_PRF', not get_option('prf'))
+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'))
@@ -71,6 +72,10 @@ 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
@@ -110,6 +115,7 @@ 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',
@@ -124,14 +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/thread.c',
   'src/core/tuple.c',
-  'src/core/typedarray.c',
   'src/core/util.c',
   'src/core/value.c',
   'src/core/vector.c',
@@ -156,7 +161,7 @@ mainclient_src = [
 janet_boot = executable('janet-boot', core_src, boot_src,
   include_directories : incdir,
   c_args : '-DJANET_BOOTSTRAP',
-  dependencies : [m_dep, dl_dep, thread_dep],
+  dependencies : [m_dep, dl_dep, thread_dep, android_spawn_dep],
   native : true)
 
 # Build janet.c
@@ -166,42 +171,45 @@ janetc = custom_target('janetc',
   capture : true,
   command : [
     janet_boot, meson.current_source_dir(),
-    'JANET_PATH', janet_path, 'JANET_HEADERPATH', header_path
+    'JANET_PATH', janet_path
   ])
 
+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, thread_dep],
+  dependencies : janet_dependencies,
   version: meson.project_version(),
   soversion: version_parts[0] + '.' + version_parts[1],
   install : true)
 
 # Extra c flags - adding -fvisibility=hidden matches the Makefile and
 # shaves off about 10k on linux x64, likely similar on other platforms.
-native_cc = meson.get_compiler('c', native: true)
-cross_cc = meson.get_compiler('c', native: false)
-if native_cc.has_argument('-fvisibility=hidden')
-  extra_native_cflags = ['-fvisibility=hidden']
+if cc.has_argument('-fvisibility=hidden')
+  extra_cflags = ['-fvisibility=hidden']
 else
-  extra_native_cflags = []
+  extra_cflags = []
 endif
-if cross_cc.has_argument('-fvisibility=hidden')
-  extra_cross_cflags = ['-fvisibility=hidden']
-else
-  extra_cross_cflags = []
-endif
-
 janet_mainclient = executable('janet', janetc, mainclient_src,
   include_directories : incdir,
-  dependencies : [m_dep, dl_dep, thread_dep],
-  c_args : extra_native_cflags,
+  dependencies : janet_dependencies,
+  c_args : extra_cflags,
   install : true)
 
 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 : [m_dep, dl_dep, thread_dep],
-    c_args : extra_cross_cflags,
+    dependencies : janet_dependencies,
+    c_args : extra_native_cflags,
     native : true)
 else
   janet_nativeclient = janet_mainclient
@@ -216,16 +224,17 @@ docs = custom_target('docs',
 
 # 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/suite7.janet',
-  'test/suite8.janet',
-  'test/suite9.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_nativeclient, args : files([t]), workdir : meson.current_source_dir())
@@ -241,22 +250,16 @@ janet_dep = declare_dependency(include_directories : incdir,
 # 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', jconf], subdir: 'janet')
 install_data(sources : ['tools/.keep'], install_dir : join_paths(get_option('libdir'), 'janet'))
-if get_option('peg') and not get_option('reduced_os') and get_option('processes')
-  install_man('jpm.1')
-  patched_jpm = custom_target('patched-jpm',
-    input : ['tools/patch-jpm.janet', 'jpm'],
-    install : true,
-    install_dir : get_option('bindir'),
-    build_by_default : true,
-    output : ['jpm'],
-    command : [janet_nativeclient, '@INPUT@', '@OUTPUT@',
-      '--binpath=' + join_paths(get_option('prefix'), get_option('bindir')),
-      '--libpath=' + join_paths(get_option('prefix'), get_option('libdir'), 'janet'),
-      '--headerpath=' + join_paths(get_option('prefix'), get_option('includedir'))])
-endif
+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

@@ -8,13 +8,17 @@ 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('typed_array', type : 'boolean', value : true)
 option('int_types', type : 'boolean', value : true)
-option('prf', 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)

src/boot/array_test.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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

src/boot/boot.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -93,7 +93,7 @@ int main(int argc, const char **argv) {
     fseek(boot_file, 0, SEEK_END);
     size_t boot_size = ftell(boot_file);
     fseek(boot_file, 0, SEEK_SET);
-    unsigned char *boot_buffer = malloc(boot_size);
+    unsigned char *boot_buffer = janet_malloc(boot_size);
     if (NULL == boot_buffer) {
         fprintf(stderr, "Failed to allocate boot buffer\n");
         exit(1);
@@ -105,7 +105,7 @@ int main(int argc, const char **argv) {
     fclose(boot_file);
 
     status = janet_dobytes(env, boot_buffer, (int32_t) boot_size, boot_filename, NULL);
-    free(boot_buffer);
+    janet_free(boot_buffer);
 
     /* Deinitialize vm */
     janet_deinit();

src/boot/buffer_test.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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

src/boot/number_test.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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

src/boot/system_test.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -23,6 +23,7 @@
 #include <janet.h>
 #include <assert.h>
 #include <stdio.h>
+#include <math.h>
 
 #include "tests.h"
 
@@ -44,6 +45,11 @@ 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);
 

src/boot/table_test.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -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

@@ -1,36 +1,13 @@
-/*
-* Copyright (c) 2020 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
-* 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.
-*/
-
-/* This is an example janetconf.h file. This will be usually generated
- * by the build system. */
+/* 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 10
-#define JANET_VERSION_PATCH 0
+#define JANET_VERSION_MINOR 19
+#define JANET_VERSION_PATCH 1
 #define JANET_VERSION_EXTRA ""
-#define JANET_VERSION "1.10.0"
+#define JANET_VERSION "1.19.1"
 
 /* #define JANET_BUILD "local" */
 
@@ -41,7 +18,8 @@
 /* #define JANET_API __attribute__((visibility ("default"))) */
 
 /* These settings should be specified before amalgamation is
- * built. */
+ * 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 */
@@ -49,15 +27,17 @@
 /* #define JANET_NO_ASSEMBLER */
 /* #define JANET_NO_PEG */
 /* #define JANET_NO_NET */
-/* #define JANET_NO_TYPED_ARRAY */
 /* #define JANET_NO_INT_TYPES */
-
-/* Other settings */
-/* #define JANET_NO_PRF */
-/* #define JANET_NO_UTC_MKTIME */
+/* #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) */
@@ -67,5 +47,18 @@
 /* #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) 2020 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
@@ -24,6 +24,12 @@
 #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 */
@@ -43,3 +49,100 @@ void *janet_abstract_end(void *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) 2020 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
@@ -35,8 +35,8 @@ JanetArray *janet_array(int32_t capacity) {
     JanetArray *array = janet_gcalloc(JANET_MEMORY_ARRAY, sizeof(JanetArray));
     Janet *data = NULL;
     if (capacity > 0) {
-        janet_vm_next_collection += capacity * sizeof(Janet);
-        data = (Janet *) malloc(sizeof(Janet) * (size_t) capacity);
+        janet_vm.next_collection += capacity * sizeof(Janet);
+        data = (Janet *) janet_malloc(sizeof(Janet) * (size_t) capacity);
         if (NULL == data) {
             JANET_OUT_OF_MEMORY;
         }
@@ -52,7 +52,7 @@ 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) * (size_t) n);
+    array->data = janet_malloc(sizeof(Janet) * (size_t) n);
     if (!array->data) {
         JANET_OUT_OF_MEMORY;
     }
@@ -68,11 +68,11 @@ void janet_array_ensure(JanetArray *array, int32_t capacity, int32_t growth) {
     int64_t new_capacity = ((int64_t) capacity) * growth;
     if (new_capacity > INT32_MAX) new_capacity = INT32_MAX;
     capacity = (int32_t) new_capacity;
-    newData = realloc(old, capacity * sizeof(Janet));
+    newData = janet_realloc(old, capacity * sizeof(Janet));
     if (NULL == newData) {
         JANET_OUT_OF_MEMORY;
     }
-    janet_vm_next_collection += (capacity - array->capacity) * sizeof(Janet);
+    janet_vm.next_collection += (capacity - array->capacity) * sizeof(Janet);
     array->data = newData;
     array->capacity = capacity;
 }
@@ -122,14 +122,19 @@ 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_new_filled(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();
@@ -141,7 +146,10 @@ static Janet cfun_array_new_filled(int32_t argc, Janet *argv) {
     return janet_wrap_array(array);
 }
 
-static Janet cfun_array_fill(int32_t argc, Janet *argv) {
+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();
@@ -151,19 +159,26 @@ static Janet cfun_array_fill(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_array_pop(int32_t argc, Janet *argv) {
+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) {
@@ -176,7 +191,12 @@ static Janet cfun_array_push(int32_t argc, Janet *argv) {
     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);
@@ -186,7 +206,13 @@ static Janet cfun_array_ensure(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_array_slice(int32_t argc, Janet *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);
@@ -196,7 +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);
@@ -210,6 +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]);
             }
@@ -219,7 +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);
@@ -245,7 +286,12 @@ static Janet cfun_array_insert(int32_t argc, Janet *argv) {
     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);
@@ -270,85 +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/new-filled", cfun_array_new_filled,
-        JDOC("(array/new-filled count &opt value)\n\n"
-             "Creates a new array of count elements, all set to value, which defaults to nil. Returns the new array.")
-    },
-    {
-        "array/fill", cfun_array_fill,
-        JDOC("(array/fill arr &opt value)\n\n"
-             "Replace all elements of an array with value (defaulting to nil) without changing the length of the array. "
-             "Returns the modified array.")
-    },
-    {
-        "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 growth)\n\n"
-             "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.")
-    },
-    {
-        "array/slice", cfun_array_slice,
-        JDOC("(array/slice arrtup &opt start end)\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. "
-             "Note that index -1 is synonymous with index (length arrtup) to allow a full "
-             "negative slice range. 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 &opt n)\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. "
-             "By default, n is 1. "
-             "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) 2020 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
@@ -73,6 +73,7 @@ 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},
@@ -112,6 +113,8 @@ static const JanetInstructionDef janet_ops[] = {
     {"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},
@@ -221,7 +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;
         }
@@ -579,7 +582,7 @@ static JanetAssembleResult janet_asm1(JanetAssembler *parent, Janet source, int
     x = janet_get1(s, janet_ckeywordv("constants"));
     if (janet_indexed_view(x, &arr, &count)) {
         def->constants_length = count;
-        def->constants = malloc(sizeof(Janet) * (size_t) count);
+        def->constants = janet_malloc(sizeof(Janet) * (size_t) count);
         if (NULL == def->constants) {
             JANET_OUT_OF_MEMORY;
         }
@@ -611,7 +614,7 @@ static JanetAssembleResult janet_asm1(JanetAssembler *parent, Janet source, int
             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;
                 }
@@ -640,7 +643,7 @@ static JanetAssembleResult janet_asm1(JanetAssembler *parent, Janet source, int
         }
         /* Allocate bytecode array */
         def->bytecode_length = blength;
-        def->bytecode = malloc(sizeof(uint32_t) * (size_t) blength);
+        def->bytecode = janet_malloc(sizeof(uint32_t) * (size_t) blength);
         if (NULL == def->bytecode) {
             JANET_OUT_OF_MEMORY;
         }
@@ -682,7 +685,7 @@ static JanetAssembleResult janet_asm1(JanetAssembler *parent, Janet source, int
     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) * (size_t) count);
+        def->sourcemap = janet_malloc(sizeof(JanetSourceMapping) * (size_t) count);
         if (NULL == def->sourcemap) {
             JANET_OUT_OF_MEMORY;
         }
@@ -708,7 +711,7 @@ static JanetAssembleResult janet_asm1(JanetAssembler *parent, Janet source, int
 
     /* 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;
     }
@@ -718,6 +721,9 @@ static JanetAssembleResult janet_asm1(JanetAssembler *parent, Janet source, int
         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;
@@ -835,85 +841,114 @@ Janet janet_asm_decode_instruction(uint32_t instr) {
     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_ckeywordv("arity"), janet_wrap_integer(def->arity));
-    janet_table_put(ret, janet_ckeywordv("min-arity"), janet_wrap_integer(def->min_arity));
-    janet_table_put(ret, janet_ckeywordv("max-arity"), janet_wrap_integer(def->max_arity));
-    janet_table_put(ret, janet_ckeywordv("bytecode"), janet_wrap_array(bcode));
-    if (NULL != def->source) {
-        janet_table_put(ret, janet_ckeywordv("source"), janet_wrap_string(def->source));
-    }
-    if (def->flags & JANET_FUNCDEF_FLAG_VARARG) {
-        janet_table_put(ret, janet_ckeywordv("vararg"), janet_wrap_true());
-    }
-    if (NULL != def->name) {
-        janet_table_put(ret, janet_ckeywordv("name"), janet_wrap_string(def->name));
-    }
-
-    /* Add constants */
-    if (def->constants_length > 0) {
-        constants = janet_array(def->constants_length);
-        janet_table_put(ret, janet_ckeywordv("constants"), janet_wrap_array(constants));
-        for (i = 0; i < def->constants_length; i++) {
-            constants->data[i] = def->constants[i];
-        }
-        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.line);
-            t[1] = janet_wrap_integer(mapping.column);
-            sourcemap->data[i] = janet_wrap_tuple(janet_tuple_end(t));
-        }
-        sourcemap->count = def->bytecode_length;
-        janet_table_put(ret, janet_ckeywordv("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_ckeywordv("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_ckeywordv("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_ckeywordv("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) {
@@ -922,33 +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 website. 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) 2020 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
@@ -31,12 +31,11 @@
 /* Initialize a buffer */
 JanetBuffer *janet_buffer_init(JanetBuffer *buffer, int32_t capacity) {
     uint8_t *data = NULL;
-    if (capacity > 0) {
-        janet_gcpressure(capacity);
-        data = malloc(sizeof(uint8_t) * (size_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;
@@ -46,7 +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 */
@@ -63,7 +62,7 @@ void janet_buffer_ensure(JanetBuffer *buffer, int32_t capacity, int32_t growth)
     int64_t big_capacity = ((int64_t) capacity) * growth;
     capacity = big_capacity > INT32_MAX ? INT32_MAX : (int32_t) big_capacity;
     janet_gcpressure(capacity - buffer->capacity);
-    new_data = realloc(old, (size_t) capacity * sizeof(uint8_t));
+    new_data = janet_realloc(old, (size_t) capacity * sizeof(uint8_t));
     if (NULL == new_data) {
         JANET_OUT_OF_MEMORY;
     }
@@ -92,8 +91,8 @@ 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;
@@ -163,14 +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;
@@ -184,7 +189,10 @@ static Janet cfun_buffer_new_filled(int32_t argc, Janet *argv) {
     return janet_wrap_buffer(buffer);
 }
 
-static Janet cfun_buffer_fill(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;
@@ -197,7 +205,28 @@ static Janet cfun_buffer_fill(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_buffer_u8(int32_t argc, Janet *argv) {
+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);
@@ -207,7 +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);
@@ -221,7 +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);
@@ -236,14 +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);
@@ -256,7 +325,12 @@ static Janet cfun_buffer_popn(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_buffer_slice(int32_t argc, Janet *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);
@@ -280,7 +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;
@@ -289,7 +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;
@@ -298,7 +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;
@@ -306,7 +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;
@@ -315,7 +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);
@@ -352,7 +438,10 @@ static Janet cfun_buffer_blit(int32_t argc, Janet *argv) {
     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);
@@ -360,100 +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 backing memory for capacity bytes. "
-             "Returns a new buffer of length 0.")
-    },
-    {
-        "buffer/new-filled", cfun_buffer_new_filled,
-        JDOC("(buffer/new-filled count &opt byte)\n\n"
-             "Creates a new buffer of length count filled with byte. By default, byte is 0. "
-             "Returns the new buffer.")
-    },
-    {
-        "buffer/fill", cfun_buffer_fill,
-        JDOC("(buffer/fill buffer &opt byte)\n\n"
-             "Fill up a buffer with bytes, defaulting to 0s. Does not change the buffer's length. "
-             "Returns the modified 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, little 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 &opt start end)\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 &opt dest-start src-start src-end)\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) 2020 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
@@ -101,10 +101,13 @@ enum JanetInstructionType janet_instructions[JOP_INSTRUCTION_COUNT] = {
     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;

src/core/capi.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -27,23 +27,39 @@
 #include "fiber.h"
 #endif
 
+#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);
-    exit(1);
+# 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;
-        janet_vm_fiber->flags |= JANET_FIBER_DID_LONGJUMP;
+    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_jmp_buf, sig);
+        _longjmp(*janet_vm.signal_buf, sig);
 #else
-        longjmp(*janet_vm_jmp_buf, sig);
+        longjmp(*janet_vm.signal_buf, sig);
 #endif
     } else {
         const char *str = (const char *)janet_formatc("janet top level signal - %v\n", message);
@@ -133,6 +149,23 @@ int janet_getmethod(const uint8_t *method, const JanetMethod *methods, Janet *ou
     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)
 DEFINE_GETTER(array, ARRAY, JanetArray *)
 DEFINE_GETTER(tuple, TUPLE, const Janet *)
@@ -179,7 +212,7 @@ 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;
 }
@@ -325,20 +358,27 @@ 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) {

src/core/cfuns.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -33,6 +33,11 @@ static int arity1or2(JanetFopts opts, JanetSlot *args) {
     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;
@@ -90,34 +95,67 @@ static JanetSlot opfunction(
     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, janet_wrap_nil());
+    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);
@@ -134,19 +172,40 @@ static JanetSlot do_debug(JanetFopts opts, JanetSlot *args) {
     return t;
 }
 static JanetSlot do_in(JanetFopts opts, JanetSlot *args) {
-    return opreduce(opts, args, JOP_IN, janet_wrap_nil());
+    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, janet_wrap_nil());
+    return opreduce(opts, args, JOP_MODULO, 0, janet_wrap_nil());
 }
 static JanetSlot do_remainder(JanetFopts opts, JanetSlot *args) {
-    return opreduce(opts, args, JOP_REMAINDER, janet_wrap_nil());
+    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) {
@@ -172,6 +231,9 @@ static JanetSlot do_yield(JanetFopts opts, JanetSlot *args) {
 static JanetSlot do_resume(JanetFopts opts, JanetSlot *args) {
     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 */
     JanetCompiler *c = opts.compiler;
@@ -200,34 +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]);
@@ -238,9 +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;
@@ -251,19 +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);
@@ -273,22 +335,22 @@ static JanetSlot compreduce(
 }
 
 static JanetSlot do_gt(JanetFopts opts, JanetSlot *args) {
-    return compreduce(opts, args, JOP_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_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_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_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_EQUALS, 0);
+    return compreduce(opts, args, JOP_EQUALS, JOP_EQUALS_IMMEDIATE, 0);
 }
 static JanetSlot do_neq(JanetFopts opts, JanetSlot *args) {
-    return compreduce(opts, args, JOP_EQUALS, 1);
+    return compreduce(opts, args, JOP_NOT_EQUALS, JOP_NOT_EQUALS_IMMEDIATE, 1);
 }
 
 /* Arranged by tag */
@@ -319,10 +381,12 @@ static const JanetFunOptimizer optimizers[] = {
     {NULL, do_eq},
     {NULL, do_neq},
     {fixarity2, do_propagate},
-    {fixarity2, do_get},
+    {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) 2020 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
@@ -53,6 +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;
@@ -199,24 +229,41 @@ 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);
+        switch (binding.type) {
             default:
             case JANET_BINDING_NONE:
                 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_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 */
@@ -399,6 +446,7 @@ 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;
@@ -439,22 +487,22 @@ static JanetSlot janetc_call(JanetFopts opts, JanetSlot *slots, JanetSlot fun) {
                         min_arity = -1 - min_arity;
                         if (min_arity > max && max >= 0) {
                             const uint8_t *es = janet_formatc(
-                                                    "%v expects at most %d argument, got at least %d",
-                                                    fun.constant, max, min_arity);
+                                                    "%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, got %d",
-                                                    fun.constant, max, min_arity);
+                                                    "%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, got %d",
-                                                    fun.constant, min, min_arity);
+                                                    "%v expects at least %d argument%s, got %d",
+                                                    fun.constant, min, min == 1 ? "" : "s", min_arity);
                             janetc_error(c, es);
                         }
                     }
@@ -504,10 +552,40 @@ 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;
 }
 
@@ -601,6 +679,9 @@ static int macroexpand1(
     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", tempOut);
@@ -698,7 +779,32 @@ 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();
@@ -720,7 +826,7 @@ JanetFuncDef *janetc_pop_funcdef(JanetCompiler *c) {
     def->bytecode_length = janet_v_count(c->buffer) - scope->bytecode_start;
     if (def->bytecode_length) {
         size_t s = sizeof(int32_t) * (size_t) def->bytecode_length;
-        def->bytecode = malloc(s);
+        def->bytecode = janet_malloc(s);
         if (NULL == def->bytecode) {
             JANET_OUT_OF_MEMORY;
         }
@@ -728,7 +834,7 @@ JanetFuncDef *janetc_pop_funcdef(JanetCompiler *c) {
         janet_v__cnt(c->buffer) = scope->bytecode_start;
         if (NULL != c->mapbuffer && c->source) {
             size_t s = sizeof(JanetSourceMapping) * (size_t) def->bytecode_length;
-            def->sourcemap = malloc(s);
+            def->sourcemap = janet_malloc(s);
             if (NULL == def->sourcemap) {
                 JANET_OUT_OF_MEMORY;
             }
@@ -753,7 +859,7 @@ JanetFuncDef *janetc_pop_funcdef(JanetCompiler *c) {
         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 = calloc(sizeof(uint32_t), slotchunks);
+        uint32_t *chunks = janet_calloc(sizeof(uint32_t), slotchunks);
         if (NULL == chunks) {
             JANET_OUT_OF_MEMORY;
         }
@@ -761,7 +867,6 @@ JanetFuncDef *janetc_pop_funcdef(JanetCompiler *c) {
         /* 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;
-        def->flags |= JANET_FUNCDEF_FLAG_HASCLOBITSET;
     }
 
     /* Pop the scope */
@@ -771,7 +876,7 @@ 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;
@@ -780,6 +885,7 @@ static void janetc_init(JanetCompiler *c, JanetTable *env, const uint8_t *where)
     c->source = where;
     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;
@@ -797,12 +903,13 @@ 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");
@@ -818,6 +925,7 @@ 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;
@@ -829,26 +937,42 @@ 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) {
+    if (argc >= 3) {
         source = janet_getstring(argv, 2);
     }
-    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("line"), janet_wrap_integer(res.error_mapping.line));
-        janet_table_put(t, janet_ckeywordv("column"), janet_wrap_integer(res.error_mapping.column));
+        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));
         }
@@ -856,18 +980,10 @@ 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 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.")
-    },
-    {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) 2020 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
@@ -29,6 +29,13 @@
 #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
@@ -60,6 +67,8 @@
 #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
 
@@ -162,6 +171,9 @@ struct JanetCompiler {
 
     /* Prevent unbounded recursion */
     int recursion_guard;
+
+    /* Collect linting results */
+    JanetArray *lints;
 };
 
 #define JANET_FOPTS_TAIL 0x10000
@@ -228,6 +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/corelib.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -35,6 +35,13 @@ extern const unsigned char *janet_core_image;
 extern size_t janet_core_image_size;
 #endif
 
+/* Docstrings should only exist during bootstrap */
+#ifdef JANET_BOOTSTRAP
+#define JDOC(x) (x)
+#else
+#define JDOC(x) NULL
+#endif
+
 /* Use LoadLibrary on windows or dlopen on posix to load dynamic libaries
  * with native code. */
 #if defined(JANET_NO_DYNAMIC_MODULES)
@@ -63,10 +70,29 @@ typedef void *Clib;
 #define error_clib() dlerror()
 #endif
 
+static char *get_processed_name(const char *name) {
+    if (name[0] == '.') return (char *) name;
+    const char *c;
+    for (c = name; *c; c++) {
+        if (*c == '/') return (char *) name;
+    }
+    size_t l = (size_t)(c - name);
+    char *ret = janet_malloc(l + 3);
+    if (NULL == ret) {
+        JANET_OUT_OF_MEMORY;
+    }
+    ret[0] = '.';
+    ret[1] = '/';
+    memcpy(ret + 2, name, l + 1);
+    return ret;
+}
+
 JanetModule janet_native(const char *name, const uint8_t **error) {
-    Clib lib = load_clib(name);
+    char *processed_name = get_processed_name(name);
+    Clib lib = load_clib(processed_name);
     JanetModule init;
     JanetModconf getter;
+    if (name != processed_name) janet_free(processed_name);
     if (!lib) {
         *error = janet_cstring(error_clib());
         return NULL;
@@ -111,7 +137,7 @@ static const char *janet_dyncstring(const char *name, const char *dflt) {
     const uint8_t *jstr = janet_unwrap_string(x);
     const char *cstr = (const char *)jstr;
     if (strlen(cstr) != (size_t) janet_string_length(jstr)) {
-        janet_panicf("string %v contains embedded 0s");
+        janet_panicf("string %v contains embedded 0s", x);
     }
     return cstr;
 }
@@ -124,7 +150,18 @@ static int is_path_sep(char c) {
 }
 
 /* Used for module system. */
-static Janet janet_core_expand_path(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_expand_path,
+              "(module/expand-path path template)",
+              "Expands a path template as found in `module/paths` for `module/find`. "
+              "This takes in a path (the argument to require) and a template string, "
+              "to expand the path to a path that can be "
+              "used for importing files. The replacements are as follows:\n\n"
+              "* :all: -- the value of path verbatim\n\n"
+              "* :cur: -- the current file, or (dyn :current-file)\n\n"
+              "* :dir: -- the directory containing the current file\n\n"
+              "* :name: -- the name component of path, with extension if given\n\n"
+              "* :native: -- the extension used to load natives, .so or .dll\n\n"
+              "* :sys: -- the system path, or (dyn :syspath)") {
     janet_fixarity(argc, 2);
     const char *input = janet_getcstring(argv, 0);
     const char *template = janet_getcstring(argv, 1);
@@ -247,11 +284,13 @@ static Janet janet_core_expand_path(int32_t argc, Janet *argv) {
     return janet_wrap_buffer(out);
 }
 
-static Janet janet_core_dyn(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_dyn,
+              "(dyn key &opt default)",
+              "Get a dynamic binding. Returns the default value (or nil) if no binding found.") {
     janet_arity(argc, 1, 2);
     Janet value;
-    if (janet_vm_fiber->env) {
-        value = janet_table_get(janet_vm_fiber->env, argv[0]);
+    if (janet_vm.fiber->env) {
+        value = janet_table_get(janet_vm.fiber->env, argv[0]);
     } else {
         value = janet_wrap_nil();
     }
@@ -261,16 +300,24 @@ static Janet janet_core_dyn(int32_t argc, Janet *argv) {
     return value;
 }
 
-static Janet janet_core_setdyn(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_setdyn,
+              "(setdyn key value)",
+              "Set a dynamic binding. Returns value.") {
     janet_fixarity(argc, 2);
-    if (!janet_vm_fiber->env) {
-        janet_vm_fiber->env = janet_table(2);
+    if (!janet_vm.fiber->env) {
+        janet_vm.fiber->env = janet_table(2);
     }
-    janet_table_put(janet_vm_fiber->env, argv[0], argv[1]);
+    janet_table_put(janet_vm.fiber->env, argv[0], argv[1]);
     return argv[1];
 }
 
-static Janet janet_core_native(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_native,
+              "(native path &opt env)",
+              "Load a native module from the given path. The path "
+              "must be an absolute or relative path on the file system, and is "
+              "usually a .so file on Unix systems, and a .dll file on Windows. "
+              "Returns an environment table that contains functions and other values "
+              "from the native module.") {
     JanetModule init;
     janet_arity(argc, 1, 2);
     const uint8_t *path = janet_getstring(argv, 0);
@@ -290,67 +337,104 @@ static Janet janet_core_native(int32_t argc, Janet *argv) {
     return janet_wrap_table(env);
 }
 
-static Janet janet_core_describe(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_describe,
+              "(describe x)",
+              "Returns a string that is a human-readable description of a value x.") {
     JanetBuffer *b = janet_buffer(0);
     for (int32_t i = 0; i < argc; ++i)
         janet_description_b(b, argv[i]);
     return janet_stringv(b->data, b->count);
 }
 
-static Janet janet_core_string(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_string,
+              "(string & xs)",
+              "Creates a string by concatenating the elements of `xs` together. If an "
+              "element is not a byte sequence, it is converted to bytes via `describe`. "
+              "Returns the new string.") {
     JanetBuffer *b = janet_buffer(0);
     for (int32_t i = 0; i < argc; ++i)
         janet_to_string_b(b, argv[i]);
     return janet_stringv(b->data, b->count);
 }
 
-static Janet janet_core_symbol(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_symbol,
+              "(symbol & xs)",
+              "Creates a symbol by concatenating the elements of `xs` together. If an "
+              "element is not a byte sequence, it is converted to bytes via `describe`. "
+              "Returns the new symbol.") {
     JanetBuffer *b = janet_buffer(0);
     for (int32_t i = 0; i < argc; ++i)
         janet_to_string_b(b, argv[i]);
     return janet_symbolv(b->data, b->count);
 }
 
-static Janet janet_core_keyword(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_keyword,
+              "(keyword & xs)",
+              "Creates a keyword by concatenating the elements of `xs` together. If an "
+              "element is not a byte sequence, it is converted to bytes via `describe`. "
+              "Returns the new keyword.") {
     JanetBuffer *b = janet_buffer(0);
     for (int32_t i = 0; i < argc; ++i)
         janet_to_string_b(b, argv[i]);
     return janet_keywordv(b->data, b->count);
 }
 
-static Janet janet_core_buffer(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_buffer,
+              "(buffer & xs)",
+              "Creates a buffer by concatenating the elements of `xs` together. If an "
+              "element is not a byte sequence, it is converted to bytes via `describe`. "
+              "Returns the new buffer.") {
     JanetBuffer *b = janet_buffer(0);
     for (int32_t i = 0; i < argc; ++i)
         janet_to_string_b(b, argv[i]);
     return janet_wrap_buffer(b);
 }
 
-static Janet janet_core_is_abstract(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_is_abstract,
+              "(abstract? x)",
+              "Check if x is an abstract type.") {
     janet_fixarity(argc, 1);
     return janet_wrap_boolean(janet_checktype(argv[0], JANET_ABSTRACT));
 }
 
-static Janet janet_core_scannumber(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_scannumber,
+              "(scan-number str &opt base)",
+              "Parse a number from a byte sequence and return that number, either an integer "
+              "or a real. The number "
+              "must be in the same format as numbers in janet source code. Will return nil "
+              "on an invalid number. Optionally provide a base - if a base is provided, no "
+              "radix specifier is expected at the beginning of the number.") {
     double number;
-    janet_fixarity(argc, 1);
+    janet_arity(argc, 1, 2);
     JanetByteView view = janet_getbytes(argv, 0);
-    if (janet_scan_number(view.bytes, view.len, &number))
+    int32_t base = janet_optinteger(argv, argc, 1, 0);
+    int valid = base == 0 || (base >= 2 && base <= 36);
+    if (!valid) {
+        janet_panicf("expected base between 2 and 36, got %d", base);
+    }
+    if (janet_scan_number_base(view.bytes, view.len, base, &number))
         return janet_wrap_nil();
     return janet_wrap_number(number);
 }
 
-static Janet janet_core_tuple(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_tuple,
+              "(tuple & items)",
+              "Creates a new tuple that contains items. Returns the new tuple.") {
     return janet_wrap_tuple(janet_tuple_n(argv, argc));
 }
 
-static Janet janet_core_array(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_array,
+              "(array & items)",
+              "Create a new array that contains items. Returns the new array.") {
     JanetArray *array = janet_array(argc);
     array->count = argc;
     safe_memcpy(array->data, argv, argc * sizeof(Janet));
     return janet_wrap_array(array);
 }
 
-static Janet janet_core_slice(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_slice,
+              "(slice x &opt start end)",
+              "Extract a sub-range of an indexed data structure or byte sequence.") {
     JanetRange range;
     JanetByteView bview;
     JanetView iview;
@@ -365,7 +449,12 @@ static Janet janet_core_slice(int32_t argc, Janet *argv) {
     }
 }
 
-static Janet janet_core_table(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_table,
+              "(table & kvs)",
+              "Creates a new table from a variadic number of keys and values. "
+              "kvs is a sequence k1, v1, k2, v2, k3, v3, ... If kvs has "
+              "an odd number of elements, an error will be thrown. Returns the "
+              "new table.") {
     int32_t i;
     if (argc & 1)
         janet_panic("expected even number of arguments");
@@ -376,10 +465,35 @@ static Janet janet_core_table(int32_t argc, Janet *argv) {
     return janet_wrap_table(table);
 }
 
-static Janet janet_core_struct(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_getproto,
+              "(getproto x)",
+              "Get the prototype of a table or struct. Will return nil if `x` has no prototype.") {
+    janet_fixarity(argc, 1);
+    if (janet_checktype(argv[0], JANET_TABLE)) {
+        JanetTable *t = janet_unwrap_table(argv[0]);
+        return t->proto
+               ? janet_wrap_table(t->proto)
+               : janet_wrap_nil();
+    }
+    if (janet_checktype(argv[0], JANET_STRUCT)) {
+        JanetStruct st = janet_unwrap_struct(argv[0]);
+        return janet_struct_proto(st)
+               ? janet_wrap_struct(janet_struct_proto(st))
+               : janet_wrap_nil();
+    }
+    janet_panicf("expected struct|table, got %v", argv[0]);
+}
+
+JANET_CORE_FN(janet_core_struct,
+              "(struct & kvs)",
+              "Create a new struct from a sequence of key value pairs. "
+              "kvs is a sequence k1, v1, k2, v2, k3, v3, ... If kvs has "
+              "an odd number of elements, an error will be thrown. Returns the "
+              "new struct.") {
     int32_t i;
-    if (argc & 1)
+    if (argc & 1) {
         janet_panic("expected even number of arguments");
+    }
     JanetKV *st = janet_struct_begin(argc >> 1);
     for (i = 0; i < argc; i += 2) {
         janet_struct_put(st, argv[i], argv[i + 1]);
@@ -387,37 +501,69 @@ static Janet janet_core_struct(int32_t argc, Janet *argv) {
     return janet_wrap_struct(janet_struct_end(st));
 }
 
-static Janet janet_core_gensym(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_gensym,
+              "(gensym)",
+              "Returns a new symbol that is unique across the runtime. This means it "
+              "will not collide with any already created symbols during compilation, so "
+              "it can be used in macros to generate automatic bindings.") {
     (void) argv;
     janet_fixarity(argc, 0);
     return janet_wrap_symbol(janet_symbol_gen());
 }
 
-static Janet janet_core_gccollect(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_gccollect,
+              "(gccollect)",
+              "Run garbage collection. You should probably not call this manually.") {
     (void) argv;
     (void) argc;
     janet_collect();
     return janet_wrap_nil();
 }
 
-static Janet janet_core_gcsetinterval(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_gcsetinterval,
+              "(gcsetinterval interval)",
+              "Set an integer number of bytes to allocate before running garbage collection. "
+              "Low values for interval will be slower but use less memory. "
+              "High values will be faster but use more memory.") {
     janet_fixarity(argc, 1);
     size_t s = janet_getsize(argv, 0);
     /* limit interval to 48 bits */
-    if (s > 0xFFFFFFFFFFFFUl) {
+#ifdef JANET_64
+    if (s >> 48) {
         janet_panic("interval too large");
     }
-    janet_vm_gc_interval = s;
+#endif
+    janet_vm.gc_interval = s;
     return janet_wrap_nil();
 }
 
-static Janet janet_core_gcinterval(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_gcinterval,
+              "(gcinterval)",
+              "Returns the integer number of bytes to allocate before running an iteration "
+              "of garbage collection.") {
     (void) argv;
     janet_fixarity(argc, 0);
-    return janet_wrap_number((double) janet_vm_gc_interval);
+    return janet_wrap_number((double) janet_vm.gc_interval);
 }
 
-static Janet janet_core_type(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_type,
+              "(type x)",
+              "Returns the type of `x` as a keyword. `x` is one of:\n\n"
+              "* :nil\n\n"
+              "* :boolean\n\n"
+              "* :number\n\n"
+              "* :array\n\n"
+              "* :tuple\n\n"
+              "* :table\n\n"
+              "* :struct\n\n"
+              "* :string\n\n"
+              "* :buffer\n\n"
+              "* :symbol\n\n"
+              "* :keyword\n\n"
+              "* :function\n\n"
+              "* :cfunction\n\n"
+              "* :fiber\n\n"
+              "or another keyword for an abstract type.") {
     janet_fixarity(argc, 1);
     JanetType t = janet_type(argv[0]);
     if (t == JANET_ABSTRACT) {
@@ -427,12 +573,21 @@ static Janet janet_core_type(int32_t argc, Janet *argv) {
     }
 }
 
-static Janet janet_core_hash(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_hash,
+              "(hash value)",
+              "Gets a hash for any value. The hash is an integer can be used "
+              "as a cheap hash function for all values. If two values are strictly equal, "
+              "then they will have the same hash value.") {
     janet_fixarity(argc, 1);
     return janet_wrap_number(janet_hash(argv[0]));
 }
 
-static Janet janet_core_getline(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_getline,
+              "(getline &opt prompt buf env)",
+              "Reads a line of input into a buffer, including the newline character, using a prompt. "
+              "An optional environment table can be provided for auto-complete. "
+              "Returns the modified buffer. "
+              "Use this function to implement a simple interface for a terminal program.") {
     FILE *in = janet_dynfile("in", stdin);
     FILE *out = janet_dynfile("out", stdout);
     janet_arity(argc, 0, 3);
@@ -457,21 +612,27 @@ static Janet janet_core_getline(int32_t argc, Janet *argv) {
     return janet_wrap_buffer(buf);
 }
 
-static Janet janet_core_trace(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_trace,
+              "(trace func)",
+              "Enable tracing on a function. Returns the function.") {
     janet_fixarity(argc, 1);
     JanetFunction *func = janet_getfunction(argv, 0);
     func->gc.flags |= JANET_FUNCFLAG_TRACE;
     return argv[0];
 }
 
-static Janet janet_core_untrace(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_untrace,
+              "(untrace func)",
+              "Disables tracing on a function. Returns the function.") {
     janet_fixarity(argc, 1);
     JanetFunction *func = janet_getfunction(argv, 0);
     func->gc.flags &= ~JANET_FUNCFLAG_TRACE;
     return argv[0];
 }
 
-static Janet janet_core_check_int(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_check_int,
+              "(int? x)",
+              "Check if x can be exactly represented as a 32 bit signed two's complement integer.") {
     janet_fixarity(argc, 1);
     if (!janet_checktype(argv[0], JANET_NUMBER)) goto ret_false;
     double num = janet_unwrap_number(argv[0]);
@@ -480,7 +641,9 @@ ret_false:
     return janet_wrap_false();
 }
 
-static Janet janet_core_check_nat(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_check_nat,
+              "(nat? x)",
+              "Check if x can be exactly represented as a non-negative 32 bit signed two's complement integer.") {
     janet_fixarity(argc, 1);
     if (!janet_checktype(argv[0], JANET_NUMBER)) goto ret_false;
     double num = janet_unwrap_number(argv[0]);
@@ -489,7 +652,9 @@ ret_false:
     return janet_wrap_false();
 }
 
-static Janet janet_core_signal(int32_t argc, Janet *argv) {
+JANET_CORE_FN(janet_core_signal,
+              "(signal what x)",
+              "Raise a signal with payload x. ") {
     janet_arity(argc, 1, 2);
     int sig;
     if (janet_checkint(argv[0])) {
@@ -514,204 +679,6 @@ static Janet janet_core_signal(int32_t argc, Janet *argv) {
     janet_signalv(sig, payload);
 }
 
-static const JanetReg corelib_cfuns[] = {
-    {
-        "native", janet_core_native,
-        JDOC("(native path &opt env)\n\n"
-             "Load a native module from the given path. The path "
-             "must be an absolute or relative path on the file system, and is "
-             "usually a .so file on Unix systems, and a .dll file on Windows. "
-             "Returns an environment table that contains functions and other values "
-             "from the native module.")
-    },
-    {
-        "describe", janet_core_describe,
-        JDOC("(describe x)\n\n"
-             "Returns a string that is a human readable description of a value x.")
-    },
-    {
-        "string", janet_core_string,
-        JDOC("(string & parts)\n\n"
-             "Creates a string by concatenating values together. Values are "
-             "converted to bytes via describe if they are not byte sequences. "
-             "Returns the new string.")
-    },
-    {
-        "symbol", janet_core_symbol,
-        JDOC("(symbol & xs)\n\n"
-             "Creates a symbol by concatenating values together. Values are "
-             "converted to bytes via describe if they are not byte sequences. Returns "
-             "the new symbol.")
-    },
-    {
-        "keyword", janet_core_keyword,
-        JDOC("(keyword & xs)\n\n"
-             "Creates a keyword by concatenating values together. Values are "
-             "converted to bytes via describe if they are not byte sequences. Returns "
-             "the new keyword.")
-    },
-    {
-        "buffer", janet_core_buffer,
-        JDOC("(buffer & xs)\n\n"
-             "Creates a new buffer by concatenating values together. Values are "
-             "converted to bytes via describe if they are not byte sequences. Returns "
-             "the new buffer.")
-    },
-    {
-        "abstract?", janet_core_is_abstract,
-        JDOC("(abstract? x)\n\n"
-             "Check if x is an abstract type.")
-    },
-    {
-        "table", janet_core_table,
-        JDOC("(table & kvs)\n\n"
-             "Creates a new table from a variadic number of keys and values. "
-             "kvs is a sequence k1, v1, k2, v2, k3, v3, ... If kvs has "
-             "an odd number of elements, an error will be thrown. Returns the "
-             "new table.")
-    },
-    {
-        "array", janet_core_array,
-        JDOC("(array & items)\n\n"
-             "Create a new array that contains items. Returns the new array.")
-    },
-    {
-        "scan-number", janet_core_scannumber,
-        JDOC("(scan-number str)\n\n"
-             "Parse a number from a byte sequence an return that number, either and integer "
-             "or a real. The number "
-             "must be in the same format as numbers in janet source code. Will return nil "
-             "on an invalid number.")
-    },
-    {
-        "tuple", janet_core_tuple,
-        JDOC("(tuple & items)\n\n"
-             "Creates a new tuple that contains items. Returns the new tuple.")
-    },
-    {
-        "struct", janet_core_struct,
-        JDOC("(struct & kvs)\n\n"
-             "Create a new struct from a sequence of key value pairs. "
-             "kvs is a sequence k1, v1, k2, v2, k3, v3, ... If kvs has "
-             "an odd number of elements, an error will be thrown. Returns the "
-             "new struct.")
-    },
-    {
-        "gensym", janet_core_gensym,
-        JDOC("(gensym)\n\n"
-             "Returns a new symbol that is unique across the runtime. This means it "
-             "will not collide with any already created symbols during compilation, so "
-             "it can be used in macros to generate automatic bindings.")
-    },
-    {
-        "gccollect", janet_core_gccollect,
-        JDOC("(gccollect)\n\n"
-             "Run garbage collection. You should probably not call this manually.")
-    },
-    {
-        "gcsetinterval", janet_core_gcsetinterval,
-        JDOC("(gcsetinterval interval)\n\n"
-             "Set an integer number of bytes to allocate before running garbage collection. "
-             "Low values for interval will be slower but use less memory. "
-             "High values will be faster but use more memory.")
-    },
-    {
-        "gcinterval", janet_core_gcinterval,
-        JDOC("(gcinterval)\n\n"
-             "Returns the integer number of bytes to allocate before running an iteration "
-             "of garbage collection.")
-    },
-    {
-        "type", janet_core_type,
-        JDOC("(type x)\n\n"
-             "Returns the type of x as a keyword. x is one of\n"
-             "\t:nil\n"
-             "\t:boolean\n"
-             "\t:number\n"
-             "\t:array\n"
-             "\t:tuple\n"
-             "\t:table\n"
-             "\t:struct\n"
-             "\t:string\n"
-             "\t:buffer\n"
-             "\t:symbol\n"
-             "\t:keyword\n"
-             "\t:function\n"
-             "\t:cfunction\n\n"
-             "or another keyword for an abstract type.")
-    },
-    {
-        "hash", janet_core_hash,
-        JDOC("(hash value)\n\n"
-             "Gets a hash for any value. The hash is an integer can be used "
-             "as a cheap hash function for all values. If two values are strictly equal, "
-             "then they will have the same hash value.")
-    },
-    {
-        "getline", janet_core_getline,
-        JDOC("(getline &opt prompt buf env)\n\n"
-             "Reads a line of input into a buffer, including the newline character, using a prompt. "
-             "An optional environment table can be provided for auto-complete. "
-             "Returns the modified buffer. "
-             "Use this function to implement a simple interface for a terminal program.")
-    },
-    {
-        "dyn", janet_core_dyn,
-        JDOC("(dyn key &opt default)\n\n"
-             "Get a dynamic binding. Returns the default value (or nil) if no binding found.")
-    },
-    {
-        "setdyn", janet_core_setdyn,
-        JDOC("(setdyn key value)\n\n"
-             "Set a dynamic binding. Returns value.")
-    },
-    {
-        "trace", janet_core_trace,
-        JDOC("(trace func)\n\n"
-             "Enable tracing on a function. Returns the function.")
-    },
-    {
-        "untrace", janet_core_untrace,
-        JDOC("(untrace func)\n\n"
-             "Disables tracing on a function. Returns the function.")
-    },
-    {
-        "module/expand-path", janet_core_expand_path,
-        JDOC("(module/expand-path path template)\n\n"
-             "Expands a path template as found in module/paths for module/find. "
-             "This takes in a path (the argument to require) and a template string, template, "
-             "to expand the path to a path that can be "
-             "used for importing files. The replacements are as follows:\n\n"
-             "\t:all:\tthe value of path verbatim\n"
-             "\t:cur:\tthe current file, or (dyn :current-file)\n"
-             "\t:dir:\tthe directory containing the current file\n"
-             "\t:name:\tthe name component of path, with extension if given\n"
-             "\t:native:\tthe extension used to load natives, .so or .dll\n"
-             "\t:sys:\tthe system path, or (dyn :syspath)")
-    },
-    {
-        "int?", janet_core_check_int,
-        JDOC("(int? x)\n\n"
-             "Check if x can be exactly represented as a 32 bit signed two's complement integer.")
-    },
-    {
-        "nat?", janet_core_check_nat,
-        JDOC("(nat? x)\n\n"
-             "Check if x can be exactly represented as a non-negative 32 bit signed two's complement integer.")
-    },
-    {
-        "slice", janet_core_slice,
-        JDOC("(slice x &opt start end)\n\n"
-             "Extract a sub-range of an indexed data structure or byte sequence.")
-    },
-    {
-        "signal", janet_core_signal,
-        JDOC("(signal what x)\n\n"
-             "Raise a signal with payload x. ")
-    },
-    {NULL, NULL, NULL}
-};
-
 #ifdef JANET_BOOTSTRAP
 
 /* Utility for inline assembly */
@@ -732,13 +699,14 @@ static void janet_quick_asm(
     def->max_arity = max_arity;
     def->flags = flags;
     def->slotcount = slots;
-    def->bytecode = malloc(bytecode_size);
+    def->bytecode = janet_malloc(bytecode_size);
     def->bytecode_length = (int32_t)(bytecode_size / sizeof(uint32_t));
     def->name = janet_cstring(name);
     if (!def->bytecode) {
         JANET_OUT_OF_MEMORY;
     }
     memcpy(def->bytecode, bytecode, bytecode_size);
+    janet_def_addflags(def);
     janet_def(env, name, janet_wrap_function(janet_thunk(def)), doc);
 }
 
@@ -924,6 +892,10 @@ static const uint32_t resume_asm[] = {
     JOP_RESUME | (1 << 24),
     JOP_RETURN
 };
+static const uint32_t cancel_asm[] = {
+    JOP_CANCEL | (1 << 24),
+    JOP_RETURN
+};
 static const uint32_t in_asm[] = {
     JOP_IN | (1 << 24),
     JOP_LOAD_NIL | (3 << 8),
@@ -968,6 +940,10 @@ static const uint32_t remainder_asm[] = {
     JOP_REMAINDER | (1 << 24),
     JOP_RETURN
 };
+static const uint32_t cmp_asm[] = {
+    JOP_COMPARE | (1 << 24),
+    JOP_RETURN
+};
 #endif /* ifdef JANET_BOOTSTRAP */
 
 /*
@@ -975,13 +951,46 @@ static const uint32_t remainder_asm[] = {
  */
 
 static void janet_load_libs(JanetTable *env) {
-    janet_core_cfuns(env, NULL, corelib_cfuns);
+    JanetRegExt corelib_cfuns[] = {
+        JANET_CORE_REG("native", janet_core_native),
+        JANET_CORE_REG("describe", janet_core_describe),
+        JANET_CORE_REG("string", janet_core_string),
+        JANET_CORE_REG("symbol", janet_core_symbol),
+        JANET_CORE_REG("keyword", janet_core_keyword),
+        JANET_CORE_REG("buffer", janet_core_buffer),
+        JANET_CORE_REG("abstract?", janet_core_is_abstract),
+        JANET_CORE_REG("table", janet_core_table),
+        JANET_CORE_REG("array", janet_core_array),
+        JANET_CORE_REG("scan-number", janet_core_scannumber),
+        JANET_CORE_REG("tuple", janet_core_tuple),
+        JANET_CORE_REG("struct", janet_core_struct),
+        JANET_CORE_REG("gensym", janet_core_gensym),
+        JANET_CORE_REG("gccollect", janet_core_gccollect),
+        JANET_CORE_REG("gcsetinterval", janet_core_gcsetinterval),
+        JANET_CORE_REG("gcinterval", janet_core_gcinterval),
+        JANET_CORE_REG("type", janet_core_type),
+        JANET_CORE_REG("hash", janet_core_hash),
+        JANET_CORE_REG("getline", janet_core_getline),
+        JANET_CORE_REG("dyn", janet_core_dyn),
+        JANET_CORE_REG("setdyn", janet_core_setdyn),
+        JANET_CORE_REG("trace", janet_core_trace),
+        JANET_CORE_REG("untrace", janet_core_untrace),
+        JANET_CORE_REG("module/expand-path", janet_core_expand_path),
+        JANET_CORE_REG("int?", janet_core_check_int),
+        JANET_CORE_REG("nat?", janet_core_check_nat),
+        JANET_CORE_REG("slice", janet_core_slice),
+        JANET_CORE_REG("signal", janet_core_signal),
+        JANET_CORE_REG("getproto", janet_core_getproto),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, corelib_cfuns);
     janet_lib_io(env);
     janet_lib_math(env);
     janet_lib_array(env);
     janet_lib_tuple(env);
     janet_lib_buffer(env);
     janet_lib_table(env);
+    janet_lib_struct(env);
     janet_lib_fiber(env);
     janet_lib_os(env);
     janet_lib_parse(env);
@@ -995,14 +1004,11 @@ static void janet_load_libs(JanetTable *env) {
 #ifdef JANET_ASSEMBLER
     janet_lib_asm(env);
 #endif
-#ifdef JANET_TYPED_ARRAY
-    janet_lib_typed_array(env);
-#endif
 #ifdef JANET_INT_TYPES
     janet_lib_inttypes(env);
 #endif
-#ifdef JANET_THREADS
-    janet_lib_thread(env);
+#ifdef JANET_EV
+    janet_lib_ev(env);
 #endif
 #ifdef JANET_NET
     janet_lib_net(env);
@@ -1021,6 +1027,11 @@ JanetTable *janet_core_env(JanetTable *replacements) {
                     "%", 2, 2, 2, 2, remainder_asm, sizeof(remainder_asm),
                     JDOC("(% dividend divisor)\n\n"
                          "Returns the remainder of dividend / divisor."));
+    janet_quick_asm(env, JANET_FUN_CMP,
+                    "cmp", 2, 2, 2, 2, cmp_asm, sizeof(cmp_asm),
+                    JDOC("(cmp x y)\n\n"
+                         "Returns -1 if x is strictly less than y, 1 if y is strictly greater "
+                         "than x, and 0 otherwise. To return 0, x and y must be the exact same type."));
     janet_quick_asm(env, JANET_FUN_NEXT,
                     "next", 2, 1, 2, 2, next_asm, sizeof(next_asm),
                     JDOC("(next ds &opt key)\n\n"
@@ -1052,6 +1063,11 @@ JanetTable *janet_core_env(JanetTable *replacements) {
                          "Yield a value to a parent fiber. When a fiber yields, its execution is paused until "
                          "another thread resumes it. The fiber will then resume, and the last yield call will "
                          "return the value that was passed to resume."));
+    janet_quick_asm(env, JANET_FUN_CANCEL,
+                    "cancel", 2, 2, 2, 2, cancel_asm, sizeof(cancel_asm),
+                    JDOC("(cancel fiber err)\n\n"
+                         "Resume a fiber but have it immediately raise an error. This lets a programmer unwind a pending fiber. "
+                         "Returns the same result as resume."));
     janet_quick_asm(env, JANET_FUN_RESUME,
                     "resume", 2, 1, 2, 2, resume_asm, sizeof(resume_asm),
                     JDOC("(resume fiber &opt x)\n\n"
@@ -1162,7 +1178,8 @@ JanetTable *janet_core_env(JanetTable *replacements) {
                    "if native modules are compatible with the host program."));
 
     /* Allow references to the environment */
-    janet_def(env, "_env", janet_wrap_table(env), JDOC("The environment table for the current scope."));
+    janet_def(env, "root-env", janet_wrap_table(env),
+              JDOC("The root environment used to create environments with (make-env)."));
 
     janet_load_libs(env);
     janet_gcroot(janet_wrap_table(env));
@@ -1173,26 +1190,11 @@ JanetTable *janet_core_env(JanetTable *replacements) {
 
 JanetTable *janet_core_env(JanetTable *replacements) {
     /* Memoize core env, ignoring replacements the second time around. */
-    if (NULL != janet_vm_core_env) {
-        return janet_vm_core_env;
+    if (NULL != janet_vm.core_env) {
+        return janet_vm.core_env;
     }
 
-    /* Load core cfunctions (and some built in janet assembly functions) */
-    JanetTable *dict = janet_table(300);
-    janet_load_libs(dict);
-
-    /* Add replacements */
-    if (replacements != NULL) {
-        for (int32_t i = 0; i < replacements->capacity; i++) {
-            JanetKV kv = replacements->data[i];
-            if (!janet_checktype(kv.key, JANET_NIL)) {
-                janet_table_put(dict, kv.key, kv.value);
-                if (janet_checktype(kv.value, JANET_CFUNCTION)) {
-                    janet_table_put(janet_vm_registry, kv.value, kv.key);
-                }
-            }
-        }
-    }
+    JanetTable *dict = janet_core_lookup_table(replacements);
 
     /* Unmarshal bytecode */
     Janet marsh_out = janet_unmarshal(
@@ -1205,9 +1207,42 @@ JanetTable *janet_core_env(JanetTable *replacements) {
     /* Memoize */
     janet_gcroot(marsh_out);
     JanetTable *env = janet_unwrap_table(marsh_out);
-    janet_vm_core_env = env;
+    janet_vm.core_env = env;
+
+    /* Invert image dict manually here. We can't do this in boot.janet as it
+     * breaks deterministic builds */
+    Janet lidv, midv;
+    lidv = midv = janet_wrap_nil();
+    janet_resolve(env, janet_csymbol("load-image-dict"), &lidv);
+    janet_resolve(env, janet_csymbol("make-image-dict"), &midv);
+    JanetTable *lid = janet_unwrap_table(lidv);
+    JanetTable *mid = janet_unwrap_table(midv);
+    for (int32_t i = 0; i < lid->capacity; i++) {
+        const JanetKV *kv = lid->data + i;
+        if (!janet_checktype(kv->key, JANET_NIL)) {
+            janet_table_put(mid, kv->value, kv->key);
+        }
+    }
 
     return env;
 }
 
 #endif
+
+JanetTable *janet_core_lookup_table(JanetTable *replacements) {
+    JanetTable *dict = janet_table(512);
+    janet_load_libs(dict);
+
+    /* Add replacements */
+    if (replacements != NULL) {
+        for (int32_t i = 0; i < replacements->capacity; i++) {
+            JanetKV kv = replacements->data[i];
+            if (!janet_checktype(kv.key, JANET_NIL)) {
+                janet_table_put(dict, kv.key, kv.value);
+                /* Add replacement functions to registry? */
+            }
+        }
+    }
+
+    return dict;
+}

src/core/debug.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -55,7 +55,7 @@ void janet_debug_find(
     JanetFuncDef **def_out, int32_t *pc_out,
     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_line = -1;
@@ -86,7 +86,7 @@ void janet_debug_find(
                 }
             }
         }
-        current = current->next;
+        current = current->data.next;
     }
     if (best_def) {
         *def_out = best_def;
@@ -96,13 +96,18 @@ void janet_debug_find(
     }
 }
 
+void janet_stacktrace(JanetFiber *fiber, Janet err) {
+    janet_stacktrace_ext(fiber, err, NULL);
+}
+
 /* 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;
     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");
@@ -116,6 +121,7 @@ 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;
@@ -123,9 +129,9 @@ 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 ";
+                const char *override_prefix = prefix ? prefix : "";
                 janet_eprintf("%s%s: %s\n",
-                              prefix,
+                              override_prefix,
                               janet_status_names[status],
                               errstr);
                 wrote_error = 1;
@@ -142,11 +148,19 @@ void janet_stacktrace(JanetFiber *fiber, Janet err) {
             } 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_eprintf(" %s", (const char *)janet_to_string(name));
-                    else
+                    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)
@@ -159,6 +173,11 @@ void janet_stacktrace(JanetFiber *fiber, Janet err) {
                 } else {
                     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);
+                }
             }
             janet_eprintf("\n");
         }
@@ -193,7 +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);
@@ -201,7 +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);
@@ -209,7 +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);
@@ -217,7 +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);
@@ -225,7 +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);
@@ -250,9 +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());
@@ -282,7 +333,21 @@ static Janet doframe(JanetStackFrame *frame) {
     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"
+              "* :column - the current source column of the stack frame\n\n"
+              "* :function - the function that the stack frame represents\n\n"
+              "* :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);
@@ -298,14 +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);
@@ -314,7 +389,11 @@ static Janet cfun_debug_argstack(int32_t argc, Janet *argv) {
     return janet_wrap_array(array);
 }
 
-static Janet cfun_debug_step(int32_t argc, Janet *argv) {
+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();
@@ -322,85 +401,19 @@ static Janet cfun_debug_step(int32_t argc, Janet *argv) {
     return out;
 }
 
-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 line and column. "
-             "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 line column)\n\n"
-             "Remove a breakpoint with a source key at a given line and column. "
-             "Will throw an error if the breakpoint "
-             "cannot be found.")
-    },
-    {
-        "debug/fbreak", cfun_debug_fbreak,
-        JDOC("(debug/fbreak fun &opt pc)\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 &opt pc)\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.")
-    },
-    {
-        "debug/step", cfun_debug_step,
-        JDOC("(debug/step fiber &opt x)\n\n"
-             "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.")
-    },
-    {NULL, NULL, NULL}
-};
-
 /* 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) 2020 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
@@ -37,7 +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);
 }
@@ -205,7 +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) {
@@ -245,8 +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) 2020 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
@@ -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) 2020 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
@@ -25,8 +25,15 @@
 #ifndef JANET_FEATURES_H_defined
 #define JANET_FEATURES_H_defined
 
-#ifndef _POSIX_C_SOURCE
-#define _POSIX_C_SOURCE 200809L
+#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
 
 #if defined(WIN32) || defined(_WIN32)
@@ -38,4 +45,11 @@
 #define _XOPEN_SOURCE 500
 #endif
 
+/* 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

src/core/fiber.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -37,6 +37,12 @@ static void fiber_reset(JanetFiber *fiber) {
     fiber->child = NULL;
     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);
 }
 
@@ -47,11 +53,11 @@ static JanetFiber *fiber_alloc(int32_t capacity) {
         capacity = 32;
     }
     fiber->capacity = capacity;
-    data = malloc(sizeof(Janet) * (size_t) capacity);
+    data = janet_malloc(sizeof(Janet) * (size_t) capacity);
     if (NULL == data) {
         JANET_OUT_OF_MEMORY;
     }
-    janet_vm_next_collection += sizeof(Janet) * capacity;
+    janet_vm.next_collection += sizeof(Janet) * capacity;
     fiber->data = data;
     return fiber;
 }
@@ -77,6 +83,10 @@ JanetFiber *janet_fiber_reset(JanetFiber *fiber, JanetFunction *callee, int32_t
     }
     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;
 }
 
@@ -85,14 +95,33 @@ 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 */
@@ -173,6 +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) */
@@ -221,8 +254,8 @@ static void janet_env_detach(JanetFuncEnv *env) {
         janet_env_valid(env);
         int32_t len = env->length;
         size_t s = sizeof(Janet) * (size_t) len;
-        Janet *vmem = malloc(s);
-        janet_vm_next_collection += (uint32_t) s;
+        Janet *vmem = janet_malloc(s);
+        janet_vm.next_collection += (uint32_t) s;
         if (NULL == vmem) {
             JANET_OUT_OF_MEMORY;
         }
@@ -305,6 +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;
@@ -367,6 +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 */
@@ -382,8 +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;
@@ -402,16 +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;
+    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 ?
@@ -419,7 +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)) {
@@ -430,7 +476,30 @@ 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;
@@ -480,17 +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);
+                        if (!janet_vm.fiber->env) {
+                            janet_vm.fiber->env = janet_table(0);
                         }
                         fiber->env = janet_table(0);
-                        fiber->env->proto = janet_vm_fiber->env;
+                        fiber->env->proto = janet_vm.fiber->env;
                         break;
                 }
             }
@@ -499,32 +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_root(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);
+    return janet_wrap_fiber(janet_vm.root_fiber);
 }
 
-static Janet cfun_fiber_maxstack(int32_t argc, Janet *argv) {
+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);
@@ -535,7 +625,9 @@ static Janet cfun_fiber_setmaxstack(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_fiber_can_resume(int32_t argc, Janet *argv) {
+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);
@@ -549,87 +641,28 @@ static Janet cfun_fiber_can_resume(int32_t argc, Janet *argv) {
     return janet_wrap_boolean(!isFinished);
 }
 
-static const JanetReg fiber_cfuns[] = {
-    {
-        "fiber/new", cfun_fiber_new,
-        JDOC("(fiber/new func &opt 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"
-             "\tt - block termination signals: error + user[0-4]\n"
-             "\tu - block user signals\n"
-             "\ty - block yield signals\n"
-             "\t0-9 - 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"
-             "\ti - inherit the environment from the current fiber\n"
-             "\tp - the environment table's prototype is the current environment table")
-    },
-    {
-        "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/root", cfun_fiber_root,
-        JDOC("(fiber/root)\n\n"
-             "Returns the current root fiber. The root fiber is the oldest ancestor "
-             "that does not have a parent.")
-    },
-    {
-        "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.")
-    },
-    {
-        "fiber/can-resume?", cfun_fiber_can_resume,
-        JDOC("(fiber/can-resume? fiber)\n\n"
-             "Check if a fiber is finished and cannot be resumed.")
-    },
-    {NULL, NULL, NULL}
-};
+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) 2020 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
@@ -46,7 +46,9 @@
 #define JANET_FIBER_MASK_USERN(N) (16 << (N))
 #define JANET_FIBER_MASK_USER 0x3FF0
 
-#define JANET_FIBER_STATUS_MASK 0xFF0000
+#define JANET_FIBER_STATUS_MASK 0x3F0000
+#define JANET_FIBER_RESUME_SIGNAL 0x400000
+#define JANET_FIBER_FLAG_CANCELED 0x400000
 #define JANET_FIBER_STATUS_OFFSET 16
 
 #define JANET_FIBER_BREAKPOINT       0x1000000
@@ -55,8 +57,6 @@
 #define JANET_FIBER_DID_LONGJUMP     0x8000000
 #define JANET_FIBER_FLAG_MASK        0xF000000
 
-extern JANET_THREAD_LOCAL JanetFiber *janet_vm_fiber;
-
 #define janet_fiber_set_status(f, s) do {\
     (f)->flags &= ~JANET_FIBER_STATUS_MASK;\
     (f)->flags |= (s) << JANET_FIBER_STATUS_OFFSET;\
@@ -76,4 +76,8 @@ 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) 2020 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
@@ -28,29 +28,9 @@
 #include "gc.h"
 #include "util.h"
 #include "fiber.h"
+#include "vector.h"
 #endif
 
-struct JanetScratch {
-    JanetScratchFinalizer finalize;
-    long long mem[]; /* for proper alignment */
-};
-
-/* GC State */
-JANET_THREAD_LOCAL void *janet_vm_blocks;
-JANET_THREAD_LOCAL size_t janet_vm_gc_interval;
-JANET_THREAD_LOCAL size_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 size_t janet_vm_root_count;
-JANET_THREAD_LOCAL size_t janet_vm_root_capacity;
-
-/* Scratch Memory */
-JANET_THREAD_LOCAL JanetScratch **janet_scratch_mem;
-JANET_THREAD_LOCAL size_t janet_scratch_cap;
-JANET_THREAD_LOCAL size_t janet_scratch_len;
-
 /* Helpers for marking the various gc types */
 static void janet_mark_funcenv(JanetFuncEnv *env);
 static void janet_mark_funcdef(JanetFuncDef *def);
@@ -70,7 +50,7 @@ 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;
+    janet_vm.next_collection += s;
 }
 
 /* Mark a value */
@@ -125,6 +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));
@@ -135,6 +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);
@@ -172,10 +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) {
@@ -224,11 +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) {
@@ -239,6 +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);
@@ -260,6 +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;
@@ -277,13 +281,13 @@ static void janet_deinit_block(JanetGCObject *mem) {
             janet_symbol_deinit(((JanetStringHead *) mem)->data);
             break;
         case JANET_MEMORY_ARRAY:
-            free(((JanetArray *) mem)->data);
+            janet_free(((JanetArray *) mem)->data);
             break;
         case JANET_MEMORY_TABLE:
-            free(((JanetTable *) mem)->data);
+            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);
@@ -298,18 +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);
-            free(def->closure_bitset);
+            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;
     }
@@ -319,24 +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 */
@@ -344,8 +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) {
@@ -356,9 +397,10 @@ void *janet_gcalloc(enum JanetMemoryType type, size_t size) {
     mem->flags = type;
 
     /* Prepend block to heap list */
-    janet_vm_next_collection += 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;
 }
@@ -367,15 +409,15 @@ static void free_one_scratch(JanetScratch *s) {
     if (NULL != s->finalize) {
         s->finalize((char *) s->mem);
     }
-    free(s);
+    janet_free(s);
 }
 
 /* Free all allocated scratch memory */
 static void janet_free_all_scratch(void) {
-    for (size_t i = 0; i < janet_scratch_len; i++) {
-        free_one_scratch(janet_scratch_mem[i]);
+    for (size_t i = 0; i < janet_vm.scratch_len; i++) {
+        free_one_scratch(janet_vm.scratch_mem[i]);
     }
-    janet_scratch_len = 0;
+    janet_vm.scratch_len = 0;
 }
 
 static JanetScratch *janet_mem2scratch(void *mem) {
@@ -386,20 +428,29 @@ static JanetScratch *janet_mem2scratch(void *mem) {
 /* 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;
-#ifdef JANET_NET
-    janet_net_markloop();
+    /* 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();
 }
 
@@ -407,17 +458,17 @@ void janet_collect(void) {
  * 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) {
-    size_t newcount = janet_vm_root_count + 1;
-    if (newcount > janet_vm_root_capacity) {
+    size_t newcount = janet_vm.root_count + 1;
+    if (newcount > janet_vm.root_capacity) {
         size_t newcap = 2 * newcount;
-        janet_vm_roots = realloc(janet_vm_roots, sizeof(Janet) * newcap);
-        if (NULL == janet_vm_roots) {
+        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 */
@@ -438,11 +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;
         }
     }
@@ -451,12 +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;
         }
@@ -466,44 +517,59 @@ 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();
-    free(janet_scratch_mem);
+    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 = malloc(sizeof(JanetScratch) + size);
+    JanetScratch *s = janet_malloc(sizeof(JanetScratch) + size);
     if (NULL == s) {
         JANET_OUT_OF_MEMORY;
     }
     s->finalize = NULL;
-    if (janet_scratch_len == janet_scratch_cap) {
-        size_t newcap = 2 * janet_scratch_cap + 2;
-        JanetScratch **newmem = (JanetScratch **) realloc(janet_scratch_mem, newcap * sizeof(JanetScratch));
+    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_scratch_cap = newcap;
-        janet_scratch_mem = newmem;
+        janet_vm.scratch_cap = newcap;
+        janet_vm.scratch_mem = newmem;
     }
-    janet_scratch_mem[janet_scratch_len++] = s;
+    janet_vm.scratch_mem[janet_vm.scratch_len++] = s;
     return (char *)(s->mem);
 }
 
@@ -520,14 +586,14 @@ void *janet_scalloc(size_t nmemb, size_t size) {
 void *janet_srealloc(void *mem, size_t size) {
     if (NULL == mem) return janet_smalloc(size);
     JanetScratch *s = janet_mem2scratch(mem);
-    if (janet_scratch_len) {
-        for (size_t i = janet_scratch_len - 1; ; i--) {
-            if (janet_scratch_mem[i] == s) {
-                JanetScratch *news = realloc(s, size + sizeof(JanetScratch));
+    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_scratch_mem[i] = news;
+                janet_vm.scratch_mem[i] = news;
                 return (char *)(news->mem);
             }
             if (i == 0) break;
@@ -544,10 +610,10 @@ void janet_sfinalizer(void *mem, JanetScratchFinalizer finalizer) {
 void janet_sfree(void *mem) {
     if (NULL == mem) return;
     JanetScratch *s = janet_mem2scratch(mem);
-    if (janet_scratch_len) {
-        for (size_t i = janet_scratch_len - 1; ; i--) {
-            if (janet_scratch_mem[i] == s) {
-                janet_scratch_mem[i] = janet_scratch_mem[--janet_scratch_len];
+    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;
             }

src/core/gc.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -55,10 +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) 2020 Calvin Rose & contributors
+* Copyright (c) 2021 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
@@ -20,18 +20,18 @@
 * IN THE SOFTWARE.
 */
 
-#include <errno.h>
-#include <stdlib.h>
-#include <limits.h>
-#include <inttypes.h>
-#include <math.h>
-
 #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>
+
 /* Conditional compilation */
 #ifdef JANET_INT_TYPES
 
@@ -39,6 +39,8 @@
 
 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;
@@ -92,7 +94,8 @@ const JanetAbstractType janet_s64_type = {
     it_s64_tostring,
     janet_int64_compare,
     janet_int64_hash,
-    JANET_ATEND_HASH
+    janet_int64_next,
+    JANET_ATEND_NEXT
 };
 
 const JanetAbstractType janet_u64_type = {
@@ -106,7 +109,8 @@ const JanetAbstractType janet_u64_type = {
     it_u64_tostring,
     janet_uint64_compare,
     janet_int64_hash,
-    JANET_ATEND_HASH
+    janet_uint64_next,
+    JANET_ATEND_NEXT
 };
 
 int64_t janet_unwrap_s64(Janet x) {
@@ -134,7 +138,7 @@ int64_t janet_unwrap_s64(Janet x) {
             break;
         }
     }
-    janet_panic("bad s64 initializer");
+    janet_panicf("bad s64 initializer: %t", x);
     return 0;
 }
 
@@ -144,7 +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;
         }
@@ -163,7 +169,7 @@ uint64_t janet_unwrap_u64(Janet x) {
             break;
         }
     }
-    janet_panic("bad u64 initializer");
+    janet_panicf("bad u64 initializer: %t", x);
     return 0;
 }
 
@@ -187,25 +193,28 @@ Janet janet_wrap_u64(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]));
 }
 
-// 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.
-//
+/*
+ * 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);
 }
@@ -242,7 +251,6 @@ static int compare_uint64_double(uint64_t x, double y) {
     }
 }
 
-
 static Janet cfun_it_s64_compare(int32_t argc, Janet *argv) {
     janet_fixarity(argc, 2);
     if (janet_is_int(argv[0]) != JANET_INT_S64)
@@ -383,31 +391,14 @@ static Janet cfun_it_##type##_##name(int32_t argc, Janet *argv) { \
 } \
 
 static Janet cfun_it_s64_mod(int32_t argc, Janet *argv) {
-    janet_arity(argc, 2, -1);
-    int64_t *box = janet_abstract(&janet_s64_type, sizeof(int64_t));
-    *box = janet_unwrap_s64(argv[0]);
-    for (int32_t i = 1; i < argc; i++) {
-        int64_t value = janet_unwrap_s64(argv[i]);
-        if (value == 0) janet_panic("division by zero");
-        int64_t x = *box % value;
-        if (x < 0) {
-            x = (*box < 0) ? x - *box : x + *box;
-        }
-        *box = x;
-    }
-    return janet_wrap_abstract(box);
-}
-
-static Janet cfun_it_s64_modi(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;
-    if (x < 0) {
-        x = (op1 < 0) ? x - op1 : x + op1;
-    }
-    *box = x;
+    *box = (op1 > 0)
+           ? ((op2 > 0) ? x : (0 == x ? x : x + op2))
+           : ((op2 > 0) ? (0 == x ? x : x + op2) : x);
     return janet_wrap_abstract(box);
 }
 
@@ -418,7 +409,6 @@ OPMETHOD(int64_t, s64, mul, *)
 DIVMETHOD_SIGNED(int64_t, s64, div, /)
 DIVMETHOD_SIGNED(int64_t, s64, rem, %)
 DIVMETHODINVERT_SIGNED(int64_t, s64, divi, /)
-DIVMETHODINVERT_SIGNED(int64_t, s64, remi, %)
 OPMETHOD(int64_t, s64, and, &)
 OPMETHOD(int64_t, s64, or, |)
 OPMETHOD(int64_t, s64, xor, ^)
@@ -431,7 +421,6 @@ OPMETHOD(uint64_t, u64, mul, *)
 DIVMETHOD(uint64_t, u64, div, /)
 DIVMETHOD(uint64_t, u64, mod, %)
 DIVMETHODINVERT(uint64_t, u64, divi, /)
-DIVMETHODINVERT(uint64_t, u64, modi, %)
 OPMETHOD(uint64_t, u64, and, &)
 OPMETHOD(uint64_t, u64, or, |)
 OPMETHOD(uint64_t, u64, xor, ^)
@@ -454,9 +443,9 @@ static JanetMethod it_s64_methods[] = {
     {"/", cfun_it_s64_div},
     {"r/", cfun_it_s64_divi},
     {"mod", cfun_it_s64_mod},
-    {"rmod", cfun_it_s64_modi},
+    {"rmod", cfun_it_s64_mod},
     {"%", cfun_it_s64_rem},
-    {"r%", cfun_it_s64_remi},
+    {"r%", cfun_it_s64_rem},
     {"&", cfun_it_s64_and},
     {"r&", cfun_it_s64_and},
     {"|", cfun_it_s64_or},
@@ -480,9 +469,9 @@ static JanetMethod it_u64_methods[] = {
     {"/", cfun_it_u64_div},
     {"r/", cfun_it_u64_divi},
     {"mod", cfun_it_u64_mod},
-    {"rmod", cfun_it_u64_modi},
+    {"rmod", cfun_it_u64_mod},
     {"%", cfun_it_u64_mod},
-    {"r%", cfun_it_u64_modi},
+    {"r%", cfun_it_u64_mod},
     {"&", cfun_it_u64_and},
     {"r&", cfun_it_u64_and},
     {"|", cfun_it_u64_or},
@@ -496,6 +485,16 @@ static JanetMethod it_u64_methods[] = {
     {NULL, NULL}
 };
 
+static Janet janet_int64_next(void *p, Janet key) {
+    (void) p;
+    return janet_nextmethod(it_s64_methods, key);
+}
+
+static Janet janet_uint64_next(void *p, Janet key) {
+    (void) p;
+    return janet_nextmethod(it_u64_methods, key);
+}
+
 static int it_s64_get(void *p, Janet key, Janet *out) {
     (void) p;
     if (!janet_checktype(key, JANET_KEYWORD))
@@ -510,23 +509,14 @@ static int it_u64_get(void *p, Janet key, Janet *out) {
     return janet_getmethod(janet_unwrap_keyword(key), it_u64_methods, out);
 }
 
-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}
-};
-
 /* Module entry point */
 void janet_lib_inttypes(JanetTable *env) {
-    janet_core_cfuns(env, NULL, it_cfuns);
+    JanetRegExt it_cfuns[] = {
+        JANET_CORE_REG("int/s64", cfun_it_s64_new),
+        JANET_CORE_REG("int/u64", cfun_it_u64_new),
+        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);
 }

src/core/io.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -37,22 +37,32 @@
 
 static int cfun_io_gc(void *p, size_t len);
 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);
 
 const JanetAbstractType janet_file_type = {
     "core/file",
     cfun_io_gc,
     NULL,
     io_file_get,
-    JANET_ATEND_GET
+    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);
@@ -70,7 +80,7 @@ static int checkflags(const uint8_t *str) {
     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 & JANET_FILE_UPDATE) return -1;
@@ -80,12 +90,16 @@ static int checkflags(const uint8_t *str) {
                 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) {
+static void *makef(FILE *f, int32_t flags) {
     JanetFile *iof = (JanetFile *) janet_abstract(&janet_file_type, sizeof(JanetFile));
     iof->file = f;
     iof->flags = flags;
@@ -95,23 +109,28 @@ static Janet makef(FILE *f, int flags) {
     if (!(flags & JANET_FILE_NOT_CLOSEABLE))
         fcntl(fileno(f), F_SETFD, FD_CLOEXEC);
 #endif
-    return janet_wrap_abstract(iof);
+    return iof;
 }
 
 /* Open a process */
 #ifndef JANET_NO_PROCESSES
-static Janet cfun_io_popen(int32_t argc, Janet *argv) {
+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 = JANET_FILE_PIPED | (fmode[0] == 'r' ? JANET_FILE_READ : JANET_FILE_WRITE);
+        fmode = (const uint8_t *)((fmode[0] == 'r') ? "r" : "w");
     } else {
         fmode = (const uint8_t *)"r";
         flags = JANET_FILE_PIPED | JANET_FILE_READ;
@@ -121,13 +140,18 @@ static Janet cfun_io_popen(int32_t argc, Janet *argv) {
 #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_temp(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.
@@ -137,11 +161,24 @@ static Janet cfun_io_temp(int32_t argc, Janet *argv) {
     return janet_makefile(tmp, JANET_FILE_WRITE | JANET_FILE_READ | JANET_FILE_BINARY);
 }
 
-static Janet cfun_io_fopen(int32_t argc, Janet *argv) {
+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);
@@ -150,7 +187,9 @@ static Janet cfun_io_fopen(int32_t argc, Janet *argv) {
         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. */
@@ -166,7 +205,16 @@ static void read_chunk(JanetFile *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);
     JanetFile *iof = janet_getabstract(argv, 0, &janet_file_type);
     if (iof->flags & JANET_FILE_CLOSED) janet_panic("file is closed");
@@ -206,7 +254,10 @@ 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);
     JanetFile *iof = janet_getabstract(argv, 0, &janet_file_type);
     if (iof->flags & JANET_FILE_CLOSED)
@@ -229,7 +280,10 @@ 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);
     JanetFile *iof = janet_getabstract(argv, 0, &janet_file_type);
     if (iof->flags & JANET_FILE_CLOSED)
@@ -246,25 +300,39 @@ static Janet cfun_io_fflush(int32_t argc, Janet *argv) {
 #define WEXITSTATUS(x) x
 #endif
 
-/* Cleanup a file */
-static int cfun_io_gc(void *p, size_t len) {
-    (void) len;
-    JanetFile *iof = (JanetFile *)p;
-    if (!(iof->flags & (JANET_FILE_NOT_CLOSEABLE | JANET_FILE_CLOSED))) {
-        /* We can't panic inside a gc, so just ignore bad statuses here */
-        if (iof->flags & JANET_FILE_PIPED) {
+/* 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
-            pclose(iof->file);
+        if (file->flags & JANET_FILE_PIPED) {
+            ret = pclose(file->file);
+        } else
 #endif
-        } else {
-            fclose(iof->file);
+        {
+            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);
     JanetFile *iof = janet_getabstract(argv, 0, &janet_file_type);
     if (iof->flags & JANET_FILE_CLOSED)
@@ -277,6 +345,8 @@ static Janet cfun_io_fclose(int32_t argc, Janet *argv) {
         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
     } else {
         if (fclose(iof->file)) {
@@ -284,12 +354,20 @@ static Janet cfun_io_fclose(int32_t argc, Janet *argv) {
             janet_panic("could not close file");
         }
         iof->flags |= JANET_FILE_CLOSED;
-        return janet_wrap_nil();
     }
+    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);
     JanetFile *iof = janet_getabstract(argv, 0, &janet_file_type);
     if (iof->flags & JANET_FILE_CLOSED)
@@ -331,6 +409,55 @@ static int io_file_get(void *p, Janet key, Janet *out) {
     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;
@@ -340,26 +467,38 @@ FILE *janet_dynfile(const char *name, FILE *def) {
     return iofile->file;
 }
 
-static Janet cfun_io_print_impl(int32_t argc, Janet *argv,
-                                int newline, const char *name, FILE *dflt_file) {
+static Janet cfun_io_print_impl_x(int32_t argc, Janet *argv, int newline,
+                                  FILE *dflt_file, int32_t offset, Janet x) {
     FILE *f;
-    Janet x = janet_dyn(name);
     switch (janet_type(x)) {
         default:
-            /* Other values simply do nothing */
-            return janet_wrap_nil();
+            janet_panicf("cannot print to %v", x);
         case JANET_BUFFER: {
             /* Special case buffer */
             JanetBuffer *buf = janet_unwrap_buffer(x);
-            for (int32_t i = 0; i < argc; ++i) {
+            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);
@@ -370,7 +509,7 @@ static Janet cfun_io_print_impl(int32_t argc, Janet *argv,
             break;
         }
     }
-    for (int32_t i = 0; i < argc; ++i) {
+    for (int32_t i = offset; i < argc; ++i) {
         int32_t len;
         const uint8_t *vstr;
         if (janet_checktype(argv[i], JANET_BUFFER)) {
@@ -383,7 +522,11 @@ static Janet cfun_io_print_impl(int32_t argc, Janet *argv,
         }
         if (len) {
             if (1 != fwrite(vstr, len, 1, f)) {
-                janet_panicf("could not print %d bytes to (dyn :%s)", len, name);
+                if (f == dflt_file) {
+                    janet_panicf("cannot print %d bytes", len);
+                } else {
+                    janet_panicf("cannot print %d bytes to %v", len, x);
+                }
             }
         }
     }
@@ -392,41 +535,75 @@ static Janet cfun_io_print_impl(int32_t argc, Janet *argv,
     return janet_wrap_nil();
 }
 
-static Janet cfun_io_print(int32_t argc, Janet *argv) {
+
+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);
 }
 
-static Janet cfun_io_prin(int32_t argc, Janet *argv) {
+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);
 }
 
-static Janet cfun_io_eprint(int32_t argc, Janet *argv) {
+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);
 }
 
-static Janet cfun_io_eprin(int32_t argc, Janet *argv) {
+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);
 }
 
-static Janet cfun_io_printf_impl(int32_t argc, Janet *argv, int newline,
-                                 const char *name, FILE *dflt_file) {
-    FILE *f;
+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);
-    const char *fmt = janet_getcstring(argv, 0);
-    Janet x = janet_dyn(name);
+    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:
-            /* Other values simply do nothing */
-            return janet_wrap_nil();
+            janet_panicf("cannot print to %v", x);
         case JANET_BUFFER: {
             /* Special case buffer */
             JanetBuffer *buf = janet_unwrap_buffer(x);
-            janet_buffer_format(buf, fmt, 0, argc, argv);
+            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);
@@ -438,37 +615,67 @@ static Janet cfun_io_printf_impl(int32_t argc, Janet *argv, int newline,
         }
     }
     JanetBuffer *buf = janet_buffer(10);
-    janet_buffer_format(buf, fmt, 0, argc, argv);
+    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, name);
+            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;
-    free(buf->data);
+    janet_free(buf->data);
     buf->data = NULL;
     return janet_wrap_nil();
 }
 
-static Janet cfun_io_printf(int32_t argc, Janet *argv) {
+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);
 }
 
-static Janet cfun_io_prinf(int32_t argc, Janet *argv) {
+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);
 }
 
-static Janet cfun_io_eprintf(int32_t argc, Janet *argv) {
+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);
 }
 
-static Janet cfun_io_eprinf(int32_t argc, Janet *argv) {
+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)) {
@@ -487,14 +694,18 @@ static void janet_flusher(const char *name, FILE *dflt_file) {
     }
 }
 
-static Janet cfun_io_flush(int32_t argc, Janet *argv) {
+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();
 }
 
-static Janet cfun_io_eflush(int32_t argc, Janet *argv) {
+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);
@@ -537,149 +748,26 @@ void janet_dynprintf(const char *name, FILE *dflt_file, const char *format, ...)
     return;
 }
 
-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. 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.")
-    },
-    {
-        "prin", cfun_io_prin,
-        JDOC("(prin & xs)\n\n"
-             "Same as print, but does not add trailing newline.")
-    },
-    {
-        "printf", cfun_io_printf,
-        JDOC("(printf fmt & xs)\n\n"
-             "Prints output formatted as if with (string/format fmt ;xs) to (dyn :out stdout) with a trailing newline.")
-    },
-    {
-        "prinf", cfun_io_prinf,
-        JDOC("(prinf fmt & xs)\n\n"
-             "Like printf but with no trailing newline.")
-    },
-    {
-        "eprin", cfun_io_eprin,
-        JDOC("(eprin & xs)\n\n"
-             "Same as prin, but uses (dyn :err stderr) instead of (dyn :out stdout).")
-    },
-    {
-        "eprint", cfun_io_eprint,
-        JDOC("(eprint & xs)\n\n"
-             "Same as print, but uses (dyn :err stderr) instead of (dyn :out stdout).")
-    },
-    {
-        "eprintf", cfun_io_eprintf,
-        JDOC("(eprintf fmt & xs)\n\n"
-             "Prints output formatted as if with (string/format fmt ;xs) to (dyn :err stderr) with a trailing newline.")
-    },
-    {
-        "eprinf", cfun_io_eprinf,
-        JDOC("(eprinf fmt & xs)\n\n"
-             "Like eprintf but with no trailing newline.")
-    },
-    {
-        "flush", cfun_io_flush,
-        JDOC("(flush)\n\n"
-             "Flush (dyn :out stdout) if it is a file, otherwise do nothing.")
-    },
-    {
-        "eflush", cfun_io_eflush,
-        JDOC("(eflush)\n\n"
-             "Flush (dyn :err stderr) if it is a file, otherwise do nothing.")
-    },
-    {
-        "file/temp", cfun_io_temp,
-        JDOC("(file/temp)\n\n"
-             "Open an anonymous temporary file that is removed on close."
-             "Raises an error on failure.")
-    },
-    {
-        "file/open", cfun_io_fopen,
-        JDOC("(file/open path &opt 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. If the file is the result of a file/popen "
-             "call, close waits for and returns the process exit status.")
-    },
-    {
-        "file/read", cfun_io_fread,
-        JDOC("(file/read f what &opt 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 &opt 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.")
-    },
-#ifndef JANET_NO_PROCESSES
-    {
-        "file/popen", cfun_io_popen,
-        JDOC("(file/popen path &opt 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.")
-    },
-#endif
-    {NULL, NULL, NULL}
-};
-
 /* 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) {
     JanetFile *iof = janet_getabstract(argv, n, &janet_file_type);
     if (NULL != flags) *flags = iof->flags;
     return iof->file;
 }
 
-Janet janet_makefile(FILE *f, int flags) {
+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);
 }
@@ -692,19 +780,47 @@ FILE *janet_unwrapfile(Janet j, int *flags) {
 
 /* 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, JANET_FILE_APPEND | JANET_FILE_NOT_CLOSEABLE | JANET_FILE_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, JANET_FILE_APPEND | JANET_FILE_NOT_CLOSEABLE | JANET_FILE_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, JANET_FILE_READ | JANET_FILE_NOT_CLOSEABLE | JANET_FILE_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/marsh.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -63,7 +63,11 @@ enum {
     LB_FUNCENV_REF, /* 219 */
     LB_FUNCDEF_REF, /* 220 */
     LB_UNSAFE_CFUNCTION, /* 221 */
-    LB_UNSAFE_POINTER /* 222 */
+    LB_UNSAFE_POINTER, /* 222 */
+    LB_STRUCT_PROTO, /* 223 */
+#ifdef JANET_EV
+    LB_THREADED_ABSTRACT/* 224 */
+#endif
 } LeadBytes;
 
 /* Helper to look inside an entry in an environment */
@@ -214,15 +218,6 @@ static void marshal_one_env(MarshalState *st, JanetFuncEnv *env, int flags) {
     }
 }
 
-/* Add function flags to janet functions */
-static void janet_func_addflags(JanetFuncDef *def) {
-    if (def->name) def->flags |= JANET_FUNCDEF_FLAG_HASNAME;
-    if (def->source) def->flags |= JANET_FUNCDEF_FLAG_HASSOURCE;
-    if (def->defs) def->flags |= JANET_FUNCDEF_FLAG_HASDEFS;
-    if (def->environments) def->flags |= JANET_FUNCDEF_FLAG_HASENVS;
-    if (def->sourcemap) def->flags |= JANET_FUNCDEF_FLAG_HASSOURCEMAP;
-}
-
 /* Marshal a sequence of u32s */
 static void janet_marshal_u32s(MarshalState *st, const uint32_t *u32s, int32_t n) {
     for (int32_t i = 0; i < n; i++) {
@@ -243,7 +238,6 @@ static void marshal_one_def(MarshalState *st, JanetFuncDef *def, int flags) {
             return;
         }
     }
-    janet_func_addflags(def);
     /* Add to lookup */
     janet_v_push(st->seen_defs, def);
     pushint(st, def->flags);
@@ -295,8 +289,8 @@ static void marshal_one_def(MarshalState *st, JanetFuncDef *def, int flags) {
 }
 
 #define JANET_FIBER_FLAG_HASCHILD (1 << 29)
-#define JANET_FIBER_FLAG_HASENV (1 << 28)
-#define JANET_STACKFRAME_HASENV (1 << 30)
+#define JANET_FIBER_FLAG_HASENV   (1 << 30)
+#define JANET_STACKFRAME_HASENV   (INT32_MIN)
 
 /* Marshal a fiber */
 static void marshal_one_fiber(MarshalState *st, JanetFiber *fiber, int flags) {
@@ -335,6 +329,7 @@ static void marshal_one_fiber(MarshalState *st, JanetFiber *fiber, int flags) {
     }
     if (fiber->child)
         marshal_one(st, janet_wrap_fiber(fiber->child), flags + 1);
+    marshal_one(st, fiber->last_value, flags + 1);
 }
 
 void janet_marshal_size(JanetMarshalContext *ctx, size_t value) {
@@ -379,6 +374,21 @@ void janet_marshal_abstract(JanetMarshalContext *ctx, void *abstract) {
 
 static void marshal_one_abstract(MarshalState *st, Janet x, int flags) {
     void *abstract = janet_unwrap_abstract(x);
+#ifdef JANET_EV
+    /* Threaded abstract types get passed through as pointers in the unsafe mode */
+    if ((flags & JANET_MARSHAL_UNSAFE) &&
+            (JANET_MEMORY_THREADED_ABSTRACT == (janet_abstract_head(abstract)->gc.flags & JANET_MEM_TYPEBITS))) {
+
+        /* Increment refcount before sending message. This prevents a "death in transit" problem
+         * where a message is garbage collected while in transit between two threads - i.e., the sending threads
+         * loses the reference and runs a garbage collection before the receiving thread gets the message. */
+        janet_abstract_incref(abstract);
+        pushbyte(st, LB_THREADED_ABSTRACT);
+        pushbytes(st, (uint8_t *) &abstract, sizeof(abstract));
+        MARK_SEEN();
+        return;
+    }
+#endif
     const JanetAbstractType *at = janet_abstract_type(abstract);
     if (at->marshal) {
         pushbyte(st, LB_ABSTRACT);
@@ -386,7 +396,7 @@ static void marshal_one_abstract(MarshalState *st, Janet x, int flags) {
         JanetMarshalContext context = {st, NULL, flags, NULL, at};
         at->marshal(abstract, &context);
     } else {
-        janet_panicf("try to marshal unregistered abstract type, cannot marshal %p", x);
+        janet_panicf("cannot marshal %p", x);
     }
 }
 
@@ -533,8 +543,10 @@ static void marshal_one(MarshalState *st, Janet x, int flags) {
             int32_t count;
             const JanetKV *struct_ = janet_unwrap_struct(x);
             count = janet_struct_length(struct_);
-            pushbyte(st, LB_STRUCT);
+            pushbyte(st, janet_struct_proto(struct_) ? LB_STRUCT_PROTO : LB_STRUCT);
             pushint(st, count);
+            if (janet_struct_proto(struct_))
+                marshal_one(st, janet_wrap_struct(janet_struct_proto(struct_)), flags + 1);
             for (int32_t i = 0; i < janet_struct_capacity(struct_); i++) {
                 if (janet_checktype(struct_[i].key, JANET_NIL))
                     continue;
@@ -552,9 +564,10 @@ static void marshal_one(MarshalState *st, Janet x, int flags) {
         case JANET_FUNCTION: {
             pushbyte(st, LB_FUNCTION);
             JanetFunction *func = janet_unwrap_function(x);
-            marshal_one_def(st, func->def, flags);
-            /* Mark seen after reading def, but before envs */
+            pushint(st, func->def->environments_length);
+            /* Mark seen before reading def */
             MARK_SEEN();
+            marshal_one_def(st, func->def, flags);
             for (int32_t i = 0; i < func->def->environments_length; i++)
                 marshal_one_env(st, func->envs[i], flags + 1);
             return;
@@ -747,7 +760,7 @@ static const uint8_t *unmarshal_one_env(
             if (length == 0) {
                 janet_panic("invalid funcenv length");
             }
-            env->as.values = malloc(sizeof(Janet) * (size_t) length);
+            env->as.values = janet_malloc(sizeof(Janet) * (size_t) length);
             if (!env->as.values) {
                 JANET_OUT_OF_MEMORY;
             }
@@ -843,7 +856,7 @@ static const uint8_t *unmarshal_one_def(
 
         /* Unmarshal constants */
         if (constants_length) {
-            def->constants = malloc(sizeof(Janet) * constants_length);
+            def->constants = janet_malloc(sizeof(Janet) * constants_length);
             if (!def->constants) {
                 JANET_OUT_OF_MEMORY;
             }
@@ -855,7 +868,7 @@ static const uint8_t *unmarshal_one_def(
         def->constants_length = constants_length;
 
         /* Unmarshal bytecode */
-        def->bytecode = malloc(sizeof(uint32_t) * bytecode_length);
+        def->bytecode = janet_malloc(sizeof(uint32_t) * bytecode_length);
         if (!def->bytecode) {
             JANET_OUT_OF_MEMORY;
         }
@@ -864,7 +877,7 @@ static const uint8_t *unmarshal_one_def(
 
         /* Unmarshal environments */
         if (def->flags & JANET_FUNCDEF_FLAG_HASENVS) {
-            def->environments = calloc(1, sizeof(int32_t) * (size_t) environments_length);
+            def->environments = janet_calloc(1, sizeof(int32_t) * (size_t) environments_length);
             if (!def->environments) {
                 JANET_OUT_OF_MEMORY;
             }
@@ -878,7 +891,7 @@ static const uint8_t *unmarshal_one_def(
 
         /* Unmarshal sub funcdefs */
         if (def->flags & JANET_FUNCDEF_FLAG_HASDEFS) {
-            def->defs = calloc(1, sizeof(JanetFuncDef *) * (size_t) defs_length);
+            def->defs = janet_calloc(1, sizeof(JanetFuncDef *) * (size_t) defs_length);
             if (!def->defs) {
                 JANET_OUT_OF_MEMORY;
             }
@@ -893,14 +906,14 @@ static const uint8_t *unmarshal_one_def(
         /* Unmarshal source maps if needed */
         if (def->flags & JANET_FUNCDEF_FLAG_HASSOURCEMAP) {
             int32_t current = 0;
-            def->sourcemap = malloc(sizeof(JanetSourceMapping) * (size_t) bytecode_length);
+            def->sourcemap = janet_malloc(sizeof(JanetSourceMapping) * (size_t) bytecode_length);
             if (!def->sourcemap) {
                 JANET_OUT_OF_MEMORY;
             }
             for (int32_t i = 0; i < bytecode_length; i++) {
                 current += readint(st, &data);
                 def->sourcemap[i].line = current;
-                def->sourcemap[i].column = readnat(st, &data);
+                def->sourcemap[i].column = readint(st, &data);
             }
         } else {
             def->sourcemap = NULL;
@@ -908,11 +921,12 @@ static const uint8_t *unmarshal_one_def(
 
         /* Unmarshal closure bitset if needed */
         if (def->flags & JANET_FUNCDEF_FLAG_HASCLOBITSET) {
-            def->closure_bitset = malloc(sizeof(uint32_t) * def->slotcount);
+            int32_t n = (def->slotcount + 31) >> 5;
+            def->closure_bitset = janet_malloc(sizeof(uint32_t) * (size_t) n);
             if (NULL == def->closure_bitset) {
                 JANET_OUT_OF_MEMORY;
             }
-            data = janet_unmarshal_u32s(st, data, def->closure_bitset, (def->slotcount + 31) >> 5);
+            data = janet_unmarshal_u32s(st, data, def->closure_bitset, n);
         }
 
         /* Validate */
@@ -943,6 +957,12 @@ static const uint8_t *unmarshal_one_fiber(
     fiber->data = NULL;
     fiber->child = NULL;
     fiber->env = NULL;
+    fiber->last_value = janet_wrap_nil();
+#ifdef JANET_EV
+    fiber->waiting = NULL;
+    fiber->sched_id = 0;
+    fiber->supervisor_channel = NULL;
+#endif
 
     /* Push fiber to seen stack */
     janet_v_push(st->lookup, janet_wrap_fiber(fiber));
@@ -964,7 +984,7 @@ static const uint8_t *unmarshal_one_fiber(
 
     /* Allocate stack memory */
     fiber->capacity = fiber_stacktop + 10;
-    fiber->data = malloc(sizeof(Janet) * fiber->capacity);
+    fiber->data = janet_malloc(sizeof(Janet) * fiber->capacity);
     if (!fiber->data) {
         JANET_OUT_OF_MEMORY;
     }
@@ -1049,6 +1069,9 @@ static const uint8_t *unmarshal_one_fiber(
         fiber->child = janet_unwrap_fiber(fiberv);
     }
 
+    /* Get the fiber last value */
+    data = unmarshal_one(st, data, &fiber->last_value, flags + 1);
+
     /* We have valid fiber, finally construct remaining fields. */
     fiber->frame = frame;
     fiber->flags = fiber_flags;
@@ -1057,6 +1080,11 @@ static const uint8_t *unmarshal_one_fiber(
     fiber->maxstack = fiber_maxstack;
     fiber->env = fiber_env;
 
+    int status = janet_fiber_status(fiber);
+    if (status < 0 || status > JANET_STATUS_ALIVE) {
+        janet_panic("invalid fiber status");
+    }
+
     /* Return data */
     *out = fiber;
     return data;
@@ -1101,14 +1129,18 @@ Janet janet_unmarshal_janet(JanetMarshalContext *ctx) {
     return ret;
 }
 
-void *janet_unmarshal_abstract(JanetMarshalContext *ctx, size_t size) {
+void janet_unmarshal_abstract_reuse(JanetMarshalContext *ctx, void *p) {
     UnmarshalState *st = (UnmarshalState *)(ctx->u_state);
     if (ctx->at == NULL) {
         janet_panicf("janet_unmarshal_abstract called more than once");
     }
-    void *p = janet_abstract(ctx->at, size);
     janet_v_push(st->lookup, janet_wrap_abstract(p));
     ctx->at = NULL;
+}
+
+void *janet_unmarshal_abstract(JanetMarshalContext *ctx, size_t size) {
+    void *p = janet_abstract(ctx->at, size);
+    janet_unmarshal_abstract_reuse(ctx, p);
     return p;
 }
 
@@ -1116,17 +1148,16 @@ static const uint8_t *unmarshal_one_abstract(UnmarshalState *st, const uint8_t *
     Janet key;
     data = unmarshal_one(st, data, &key, flags + 1);
     const JanetAbstractType *at = janet_get_abstract_type(key);
-    if (at == NULL) goto oops;
+    if (at == NULL) janet_panic("unknown abstract type");
     if (at->unmarshal) {
         JanetMarshalContext context = {NULL, st, flags, data, at};
         *out = janet_wrap_abstract(at->unmarshal(&context));
         if (context.at != NULL) {
-            janet_panicf("janet_unmarshal_abstract not called");
+            janet_panic("janet_unmarshal_abstract not called");
         }
         return context.data;
     }
-oops:
-    janet_panic("invalid abstract type");
+    janet_panic("invalid abstract type - no unmarshal function pointer");
 }
 
 static const uint8_t *unmarshal_one(
@@ -1228,13 +1259,19 @@ static const uint8_t *unmarshal_one(
         case LB_FUNCTION: {
             JanetFunction *func;
             JanetFuncDef *def;
-            data = unmarshal_one_def(st, data + 1, &def, flags + 1);
+            data++;
+            int32_t len = readnat(st, &data);
+            if (len > 255) {
+                janet_panicf("invalid function - too many environments (%d)", len);
+            }
             func = janet_gcalloc(JANET_MEMORY_FUNCTION, sizeof(JanetFunction) +
-                                 def->environments_length * sizeof(JanetFuncEnv));
-            func->def = def;
+                                 len * sizeof(JanetFuncEnv));
+            func->def = NULL;
             *out = janet_wrap_function(func);
             janet_v_push(st->lookup, *out);
-            for (int32_t i = 0; i < def->environments_length; i++) {
+            data = unmarshal_one_def(st, data, &def, flags + 1);
+            func->def = def;
+            for (int32_t i = 0; i < len; i++) {
                 data = unmarshal_one_env(st, data, &(func->envs[i]), flags + 1);
             }
             return data;
@@ -1247,6 +1284,7 @@ static const uint8_t *unmarshal_one(
         case LB_ARRAY:
         case LB_TUPLE:
         case LB_STRUCT:
+        case LB_STRUCT_PROTO:
         case LB_TABLE:
         case LB_TABLE_PROTO:
             /* Things that open with integers */
@@ -1276,9 +1314,15 @@ static const uint8_t *unmarshal_one(
                 }
                 *out = janet_wrap_tuple(janet_tuple_end(tup));
                 janet_v_push(st->lookup, *out);
-            } else if (lead == LB_STRUCT) {
+            } else if (lead == LB_STRUCT || lead == LB_STRUCT_PROTO) {
                 /* Struct */
                 JanetKV *struct_ = janet_struct_begin(len);
+                if (lead == LB_STRUCT_PROTO) {
+                    Janet proto;
+                    data = unmarshal_one(st, data, &proto, flags + 1);
+                    janet_asserttype(proto, JANET_STRUCT);
+                    janet_struct_proto(struct_) = janet_unwrap_struct(proto);
+                }
                 for (int32_t i = 0; i < len; i++) {
                     Janet key, value;
                     data = unmarshal_one(st, data, &key, flags + 1);
@@ -1347,6 +1391,42 @@ static const uint8_t *unmarshal_one(
             janet_v_push(st->lookup, *out);
             return data;
         }
+#ifdef JANET_EV
+        case LB_THREADED_ABSTRACT: {
+            MARSH_EOS(st, data + sizeof(void *));
+            data++;
+            if (!(flags & JANET_MARSHAL_UNSAFE)) {
+                janet_panicf("unsafe flag not given, "
+                             "will not unmarshal threaded abstract pointer at index %d",
+                             (int)(data - st->start));
+            }
+            union {
+                void *ptr;
+                uint8_t bytes[sizeof(void *)];
+            } u;
+            memcpy(u.bytes, data, sizeof(void *));
+            data += sizeof(void *);
+
+            if (flags & JANET_MARSHAL_DECREF) {
+                /* Decrement immediately and don't bother putting into heap */
+                janet_abstract_decref(u.ptr);
+                *out = janet_wrap_nil();
+            } else {
+                *out = janet_wrap_abstract(u.ptr);
+                Janet check = janet_table_get(&janet_vm.threaded_abstracts, *out);
+                if (janet_checktype(check, JANET_NIL)) {
+                    /* Transfers reference from threaded channel buffer to current heap */
+                    janet_table_put(&janet_vm.threaded_abstracts, *out, janet_wrap_false());
+                } else {
+                    /* Heap reference already accounted for, remove threaded channel reference. */
+                    janet_abstract_decref(u.ptr);
+                }
+            }
+
+            janet_v_push(st->lookup, *out);
+            return data;
+        }
+#endif
         default: {
             janet_panicf("unknown byte %x at index %d",
                          *data,
@@ -1354,7 +1434,6 @@ static const uint8_t *unmarshal_one(
             return NULL;
         }
     }
-#undef EXTRA
 }
 
 Janet janet_unmarshal(
@@ -1381,13 +1460,24 @@ Janet janet_unmarshal(
 
 /* C functions */
 
-static Janet cfun_env_lookup(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_env_lookup,
+              "(env-lookup env)",
+              "Creates a forward lookup table for unmarshalling from an environment. "
+              "To create a reverse lookup table, use the invert function to swap keys "
+              "and values in the returned table.") {
     janet_fixarity(argc, 1);
     JanetTable *env = janet_gettable(argv, 0);
     return janet_wrap_table(janet_env_lookup(env));
 }
 
-static Janet cfun_marshal(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_marshal,
+              "(marshal x &opt reverse-lookup buffer)",
+              "Marshal a value into a buffer and return the buffer. The buffer "
+              "can then later be unmarshalled to reconstruct the initial value. "
+              "Optionally, one can pass in a reverse lookup table to not marshal "
+              "aliased values that are found in the table. Then a forward "
+              "lookup table can be used to recover the original value when "
+              "unmarshalling.") {
     janet_arity(argc, 1, 3);
     JanetBuffer *buffer;
     JanetTable *rreg = NULL;
@@ -1403,7 +1493,11 @@ static Janet cfun_marshal(int32_t argc, Janet *argv) {
     return janet_wrap_buffer(buffer);
 }
 
-static Janet cfun_unmarshal(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_unmarshal,
+              "(unmarshal buffer &opt lookup)",
+              "Unmarshal a value from a buffer. An optional lookup table "
+              "can be provided to allow for aliases to be resolved. Returns the value "
+              "unmarshalled from the buffer.") {
     janet_arity(argc, 1, 2);
     JanetByteView view = janet_getbytes(argv, 0);
     JanetTable *reg = NULL;
@@ -1413,35 +1507,13 @@ static Janet cfun_unmarshal(int32_t argc, Janet *argv) {
     return janet_unmarshal(view.bytes, (size_t) view.len, 0, reg, NULL);
 }
 
-static const JanetReg marsh_cfuns[] = {
-    {
-        "marshal", cfun_marshal,
-        JDOC("(marshal x &opt reverse-lookup buffer)\n\n"
-             "Marshal a value into a buffer and return the buffer. The buffer "
-             "can the later be unmarshalled to reconstruct the initial value. "
-             "Optionally, one can pass in a reverse lookup table to not marshal "
-             "aliased values that are found in the table. Then a forward"
-             "lookup table can be used to recover the original value when "
-             "unmarshalling.")
-    },
-    {
-        "unmarshal", cfun_unmarshal,
-        JDOC("(unmarshal buffer &opt lookup)\n\n"
-             "Unmarshal a value from a buffer. An optional lookup table "
-             "can be provided to allow for aliases to be resolved. Returns the value "
-             "unmarshalled from the buffer.")
-    },
-    {
-        "env-lookup", cfun_env_lookup,
-        JDOC("(env-lookup env)\n\n"
-             "Creates a forward lookup table for unmarshalling from an environment. "
-             "To create a reverse lookup table, use the invert function to swap keys "
-             "and values in the returned table.")
-    },
-    {NULL, NULL, NULL}
-};
-
 /* Module entry point */
 void janet_lib_marsh(JanetTable *env) {
-    janet_core_cfuns(env, NULL, marsh_cfuns);
+    JanetRegExt marsh_cfuns[] = {
+        JANET_CORE_REG("marshal", cfun_marshal),
+        JANET_CORE_REG("unmarshal", cfun_unmarshal),
+        JANET_CORE_REG("env-lookup", cfun_env_lookup),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, marsh_cfuns);
 }

src/core/math.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -23,14 +23,14 @@
 #ifndef JANET_AMALG
 #include "features.h"
 #include <janet.h>
+#include "state.h"
 #include "util.h"
 #endif
 
 #include <math.h>
 
-static JANET_THREAD_LOCAL JanetRNG janet_vm_rng = {0, 0, 0, 0, 0};
-
 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;
@@ -60,11 +60,15 @@ const JanetAbstractType janet_rng_type = {
     NULL,
     janet_rng_marshal,
     janet_rng_unmarshal,
-    JANET_ATEND_UNMARSHAL
+    NULL, /* tostring */
+    NULL, /* compare */
+    NULL, /* hash */
+    janet_rng_next,
+    JANET_ATEND_NEXT
 };
 
 JanetRNG *janet_default_rng(void) {
-    return &janet_vm_rng;
+    return &janet_vm.rng;
 }
 
 void janet_rng_seed(JanetRNG *rng, uint32_t seed) {
@@ -113,7 +117,12 @@ double janet_rng_double(JanetRNG *rng) {
     return ldexp((double)(big >> (64 - 52)), -52);
 }
 
-static Janet cfun_rng_make(int32_t argc, Janet *argv) {
+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) {
@@ -130,13 +139,20 @@ static Janet cfun_rng_make(int32_t argc, Janet *argv) {
     return janet_wrap_abstract(rng);
 }
 
-static Janet cfun_rng_uniform(int32_t argc, Janet *argv) {
+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));
 }
 
-static Janet cfun_rng_int(int32_t argc, Janet *argv) {
+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) {
@@ -164,7 +180,11 @@ static void rng_get_4bytes(JanetRNG *rng, uint8_t *buf) {
     buf[3] = (word >> 24) & 0xFF;
 }
 
-static Janet cfun_rng_buffer(int32_t argc, Janet *argv) {
+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);
@@ -203,301 +223,201 @@ static int janet_rng_get(void *p, Janet key, Janet *out) {
     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);
-    return janet_wrap_number(janet_rng_double(&janet_vm_rng));
+    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);
     if (janet_checkint(argv[0])) {
         uint32_t seed = (uint32_t)(janet_getinteger(argv, 0));
-        janet_rng_seed(&janet_vm_rng, seed);
+        janet_rng_seed(&janet_vm.rng, seed);
     } else {
         JanetByteView bytes = janet_getbytes(argv, 0);
-        janet_rng_longseed(&janet_vm_rng, bytes.bytes, bytes.len);
+        janet_rng_longseed(&janet_vm.rng, bytes.bytes, bytes.len);
     }
     return janet_wrap_nil();
 }
 
-#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(acosh, acosh)
-JANET_DEFINE_MATHOP(sin, sin)
-JANET_DEFINE_MATHOP(sinh, sinh)
-JANET_DEFINE_MATHOP(asinh, asinh)
-JANET_DEFINE_MATHOP(tan, tan)
-JANET_DEFINE_MATHOP(tanh, tanh)
-JANET_DEFINE_MATHOP(atanh, atanh)
-JANET_DEFINE_MATHOP(exp, exp)
-JANET_DEFINE_MATHOP(exp2, exp2)
-JANET_DEFINE_MATHOP(expm1, expm1)
-JANET_DEFINE_MATHOP(log, log)
-JANET_DEFINE_MATHOP(log10, log10)
-JANET_DEFINE_MATHOP(log2, log2)
-JANET_DEFINE_MATHOP(sqrt, sqrt)
-JANET_DEFINE_MATHOP(cbrt, cbrt)
-JANET_DEFINE_MATHOP(ceil, ceil)
-JANET_DEFINE_MATHOP(fabs, fabs)
-JANET_DEFINE_MATHOP(floor, floor)
-JANET_DEFINE_MATHOP(trunc, trunc)
-JANET_DEFINE_MATHOP(round, round)
-JANET_DEFINE_MATHOP(gamma, lgamma)
-JANET_DEFINE_MATHOP(log1p, log1p)
-JANET_DEFINE_MATHOP(erf, erf)
-JANET_DEFINE_MATHOP(erfc, erfc)
+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(hypot, hypot)
-JANET_DEFINE_MATH2OP(nextafter, nextafter)
+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[] = {
-    {
-        "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 integer or a buffer.")
-    },
-    {
-        "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 natural number of x.")
-    },
-    {
-        "math/log10", janet_log10,
-        JDOC("(math/log10 x)\n\n"
-             "Returns log base 10 of x.")
-    },
-    {
-        "math/log2", janet_log2,
-        JDOC("(math/log2 x)\n\n"
-             "Returns log base 2 of x.")
-    },
-    {
-        "math/sqrt", janet_sqrt,
-        JDOC("(math/sqrt x)\n\n"
-             "Returns the square root of x.")
-    },
-    {
-        "math/cbrt", janet_cbrt,
-        JDOC("(math/cbrt x)\n\n"
-             "Returns the cube 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/atanh", janet_atanh,
-        JDOC("(math/atanh x)\n\n"
-             "Return the hyperbolic arctangent of x.")
-    },
-    {
-        "math/asinh", janet_asinh,
-        JDOC("(math/asinh x)\n\n"
-             "Return the hyperbolic arcsine of x.")
-    },
-    {
-        "math/acosh", janet_acosh,
-        JDOC("(math/acosh x)\n\n"
-             "Return the hyperbolic arccosine 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.")
-    },
-    {
-        "math/rng", cfun_rng_make,
-        JDOC("(math/rng &opt seed)\n\n"
-             "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.")
-    },
-    {
-        "math/rng-uniform", cfun_rng_uniform,
-        JDOC("(math/rng-seed rng seed)\n\n"
-             "Extract a random number in the range [0, 1) from the RNG.")
-    },
-    {
-        "math/rng-int", cfun_rng_int,
-        JDOC("(math/rng-int rng &opt max)\n\n"
-             "Extract a random random integer in the range [0, max] from the RNG. If "
-             "no max is given, the default is 2^31 - 1.")
-    },
-    {
-        "math/rng-buffer", cfun_rng_buffer,
-        JDOC("(math/rng-buffer rng n &opt buf)\n\n"
-             "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.")
-    },
-    {
-        "math/hypot", janet_hypot,
-        JDOC("(math/hypot a b)\n\n"
-             "Returns the c from the equation c^2 = a^2 + b^2")
-    },
-    {
-        "math/exp2", janet_exp2,
-        JDOC("(math/exp2 x)\n\n"
-             "Returns 2 to the power of x.")
-    },
-    {
-        "math/log1p", janet_log1p,
-        JDOC("(math/log1p x)\n\n"
-             "Returns (log base e of x) + 1 more accurately than (+ (math/log x) 1)")
-    },
-    {
-        "math/gamma", janet_gamma,
-        JDOC("(math/gamma x)\n\n"
-             "Returns gamma(x).")
-    },
-    {
-        "math/erfc", janet_erfc,
-        JDOC("(math/erfc x)\n\n"
-             "Returns the complementary error function of x.")
-    },
-    {
-        "math/erf", janet_erf,
-        JDOC("(math/erf x)\n\n"
-             "Returns the error function of x.")
-    },
-    {
-        "math/expm1", janet_expm1,
-        JDOC("(math/expm1 x)\n\n"
-             "Returns e to the power of x minus 1.")
-    },
-    {
-        "math/trunc", janet_trunc,
-        JDOC("(math/trunc x)\n\n"
-             "Returns the integer between x and 0 nearest to x.")
-    },
-    {
-        "math/round", janet_round,
-        JDOC("(math/round x)\n\n"
-             "Returns the integer nearest to x.")
-    },
-    {
-        "math/next", janet_nextafter,
-        JDOC("(math/next x y)\n\n"
-             "Returns the next representable floating point value after x in the direction of y.")
-    },
-    {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_def(env, "math/-inf", janet_wrap_number(-INFINITY),
-              JDOC("The number representing negative 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/parse.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -51,15 +51,15 @@ static const uint32_t symchars[8] = {
 };
 
 /* Check if a character is a valid symbol character
- * symbol chars are A-Z, a-z, 0-9, or one of !$&*+-./:<=>@\^_~| */
-static int is_symbol_char(uint8_t c) {
+ * symbol chars are A-Z, a-z, 0-9, or one of !$&*+-./:<=>@\^_| */
+int janet_is_symbol_char(uint8_t c) {
     return symchars[c >> 5] & ((uint32_t)1 << (c & 0x1F));
 }
 
 /* Validate some utf8. Useful for identifiers. Only validates
  * the encoding, does not check for valid code points (they
  * are less well defined than the encoding). */
-static int valid_utf8(const uint8_t *str, int32_t len) {
+int janet_valid_utf8(const uint8_t *str, int32_t len) {
     int32_t i = 0;
     int32_t j;
     while (i < len) {
@@ -123,7 +123,7 @@ static void NAME(JanetParser *p, T x) { \
     if (newcount > p->STACKCAP) { \
         T *next; \
         size_t newcap = 2 * newcount; \
-        next = realloc(p->STACK, sizeof(T) * newcap); \
+        next = janet_realloc(p->STACK, sizeof(T) * newcap); \
         if (NULL == next) { \
             JANET_OUT_OF_MEMORY; \
         } \
@@ -175,7 +175,14 @@ static void popstate(JanetParser *p, Janet val) {
         if (newtop->flags & PFLAG_CONTAINER) {
             newtop->argn++;
             /* Keep track of number of values in the root state */
-            if (p->statecount == 1) p->pending++;
+            if (p->statecount == 1) {
+                p->pending++;
+                /* Root items are always wrapped in a tuple for source map info. */
+                const Janet *tup = janet_tuple_n(&val, 1);
+                janet_tuple_sm_line(tup) = (int32_t) top.line;
+                janet_tuple_sm_column(tup) = (int32_t) top.column;
+                val = janet_wrap_tuple(tup);
+            }
             push_arg(p, val);
             return;
         } else if (newtop->flags & PFLAG_READERMAC) {
@@ -313,11 +320,48 @@ static int stringend(JanetParser *p, JanetParseState *state) {
     uint8_t *bufstart = p->buf;
     int32_t buflen = (int32_t) p->bufcount;
     if (state->flags & PFLAG_LONGSTRING) {
-        /* Check for leading newline character so we can remove it */
-        if (bufstart[0] == '\n') {
-            bufstart++;
-            buflen--;
+        /* Post process to remove leading whitespace */
+        JanetParseState top = p->states[p->statecount - 1];
+        int32_t indent_col = (int32_t) top.column - 1;
+        uint8_t *r = bufstart, *end = r + buflen;
+        /* Check if there are any characters before the start column -
+         * if so, do not reindent. */
+        int reindent = 1;
+        while (reindent && (r < end)) {
+            if (*r++ == '\n') {
+                for (int32_t j = 0; (r < end) && (*r != '\n') && (j < indent_col); j++, r++) {
+                    if (*r != ' ') {
+                        reindent = 0;
+                        break;
+                    }
+                }
+            }
         }
+        /* Now reindent if able to, otherwise just drop leading newline. */
+        if (!reindent) {
+            if (buflen > 0 && bufstart[0] == '\n') {
+                buflen--;
+                bufstart++;
+            }
+        } else {
+            uint8_t *w = bufstart;
+            r = bufstart;
+            while (r < end) {
+                if (*r == '\n') {
+                    if (r == bufstart) {
+                        /* Skip leading newline */
+                        r++;
+                    } else {
+                        *w++ = *r++;
+                    }
+                    for (int32_t j = 0; (r < end) && (*r != '\n') && (j < indent_col); j++, r++);
+                } else {
+                    *w++ = *r++;
+                }
+            }
+            buflen = (int32_t)(w - bufstart);
+        }
+        /* Check for trailing newline character so we can remove it */
         if (buflen > 0 && bufstart[buflen - 1] == '\n') {
             buflen--;
         }
@@ -367,7 +411,7 @@ static int tokenchar(JanetParser *p, JanetParseState *state, uint8_t c) {
     Janet ret;
     double numval;
     int32_t blen;
-    if (is_symbol_char(c)) {
+    if (janet_is_symbol_char(c)) {
         push_buf(p, (uint8_t) c);
         if (c > 127) state->argn = 1; /* Use to indicate non ascii */
         return 1;
@@ -378,7 +422,7 @@ static int tokenchar(JanetParser *p, JanetParseState *state, uint8_t c) {
     int start_num = start_dig || p->buf[0] == '-' || p->buf[0] == '+' || p->buf[0] == '.';
     if (p->buf[0] == ':') {
         /* Don't do full utf-8 check unless we have seen non ascii characters. */
-        int valid = (!state->argn) || valid_utf8(p->buf + 1, blen - 1);
+        int valid = (!state->argn) || janet_valid_utf8(p->buf + 1, blen - 1);
         if (!valid) {
             p->error = "invalid utf-8 in keyword";
             return 0;
@@ -398,7 +442,7 @@ static int tokenchar(JanetParser *p, JanetParseState *state, uint8_t c) {
             return 0;
         } else {
             /* Don't do full utf-8 check unless we have seen non ascii characters. */
-            int valid = (!state->argn) || valid_utf8(p->buf, blen);
+            int valid = (!state->argn) || janet_valid_utf8(p->buf, blen);
             if (!valid) {
                 p->error = "invalid utf-8 in symbol";
                 return 0;
@@ -538,7 +582,7 @@ static int root(JanetParser *p, JanetParseState *state, uint8_t c) {
     switch (c) {
         default:
             if (is_whitespace(c)) return 1;
-            if (!is_symbol_char(c)) {
+            if (!janet_is_symbol_char(c)) {
                 p->error = "unexpected character";
                 return 1;
             }
@@ -693,6 +737,20 @@ const char *janet_parser_error(JanetParser *parser) {
 }
 
 Janet janet_parser_produce(JanetParser *parser) {
+    Janet ret;
+    size_t i;
+    if (parser->pending == 0) return janet_wrap_nil();
+    ret = janet_unwrap_tuple(parser->args[0])[0];
+    for (i = 1; i < parser->argcount; i++) {
+        parser->args[i - 1] = parser->args[i];
+    }
+    parser->pending--;
+    parser->argcount--;
+    parser->states[0].argn--;
+    return ret;
+}
+
+Janet janet_parser_produce_wrapped(JanetParser *parser) {
     Janet ret;
     size_t i;
     if (parser->pending == 0) return janet_wrap_nil();
@@ -702,6 +760,7 @@ Janet janet_parser_produce(JanetParser *parser) {
     }
     parser->pending--;
     parser->argcount--;
+    parser->states[0].argn--;
     return ret;
 }
 
@@ -726,9 +785,9 @@ void janet_parser_init(JanetParser *parser) {
 }
 
 void janet_parser_deinit(JanetParser *parser) {
-    free(parser->args);
-    free(parser->buf);
-    free(parser->states);
+    janet_free(parser->args);
+    janet_free(parser->buf);
+    janet_free(parser->states);
 }
 
 void janet_parser_clone(const JanetParser *src, JanetParser *dest) {
@@ -755,17 +814,17 @@ void janet_parser_clone(const JanetParser *src, JanetParser *dest) {
     dest->states = NULL;
     dest->buf = NULL;
     if (dest->bufcap) {
-        dest->buf = malloc(dest->bufcap);
+        dest->buf = janet_malloc(dest->bufcap);
         if (!dest->buf) goto nomem;
         memcpy(dest->buf, src->buf, dest->bufcap);
     }
     if (dest->argcap) {
-        dest->args = malloc(sizeof(Janet) * dest->argcap);
+        dest->args = janet_malloc(sizeof(Janet) * dest->argcap);
         if (!dest->args) goto nomem;
         memcpy(dest->args, src->args, dest->argcap * sizeof(Janet));
     }
     if (dest->statecap) {
-        dest->states = malloc(sizeof(JanetParseState) * dest->statecap);
+        dest->states = janet_malloc(sizeof(JanetParseState) * dest->statecap);
         if (!dest->states) goto nomem;
         memcpy(dest->states, src->states, dest->statecap * sizeof(JanetParseState));
     }
@@ -803,17 +862,28 @@ static int parsergc(void *p, size_t size) {
 }
 
 static int parserget(void *p, Janet key, Janet *out);
+static Janet parsernext(void *p, Janet key);
 
 const JanetAbstractType janet_parser_type = {
     "core/parser",
     parsergc,
     parsermark,
     parserget,
-    JANET_ATEND_GET
+    NULL, /* put */
+    NULL, /* marshal */
+    NULL, /* unmarshal */
+    NULL, /* tostring */
+    NULL, /* compare */
+    NULL, /* hash */
+    parsernext,
+    JANET_ATEND_NEXT
 };
 
 /* C Function parser */
-static Janet cfun_parse_parser(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_parse_parser,
+              "(parser/new)",
+              "Creates and returns a new parser object. Parsers are state machines "
+              "that can receive bytes, and generate a stream of values.") {
     (void) argv;
     janet_fixarity(argc, 0);
     JanetParser *p = janet_abstract(&janet_parser_type, sizeof(JanetParser));
@@ -821,7 +891,11 @@ static Janet cfun_parse_parser(int32_t argc, Janet *argv) {
     return janet_wrap_abstract(p);
 }
 
-static Janet cfun_parse_consume(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_parse_consume,
+              "(parser/consume parser bytes &opt index)",
+              "Input bytes into the parser and parse them. Will not throw errors "
+              "if there is a parse error. Starts at the byte index given by index. Returns "
+              "the number of bytes read.") {
     janet_arity(argc, 2, 3);
     JanetParser *p = janet_getabstract(argv, 0, &janet_parser_type);
     JanetByteView view = janet_getbytes(argv, 1);
@@ -846,14 +920,20 @@ static Janet cfun_parse_consume(int32_t argc, Janet *argv) {
     return janet_wrap_integer(i);
 }
 
-static Janet cfun_parse_eof(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_parse_eof,
+              "(parser/eof parser)",
+              "Indicate that the end of file was reached to the parser. This puts the parser in the :dead state.") {
     janet_fixarity(argc, 1);
     JanetParser *p = janet_getabstract(argv, 0, &janet_parser_type);
     janet_parser_eof(p);
     return argv[0];
 }
 
-static Janet cfun_parse_insert(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_parse_insert,
+              "(parser/insert parser value)",
+              "Insert a value into the parser. This means that the parser state can be manipulated "
+              "in between chunks of bytes. This would allow a user to add extra elements to arrays "
+              "and tuples, for example. Returns the parser.") {
     janet_fixarity(argc, 2);
     JanetParser *p = janet_getabstract(argv, 0, &janet_parser_type);
     JanetParseState *s = p->states + p->statecount - 1;
@@ -865,15 +945,20 @@ static Janet cfun_parse_insert(int32_t argc, Janet *argv) {
     if (s->flags & PFLAG_COMMENT) s--;
     if (s->flags & PFLAG_CONTAINER) {
         s->argn++;
-        if (p->statecount == 1) p->pending++;
-        push_arg(p, argv[1]);
+        if (p->statecount == 1) {
+            p->pending++;
+            Janet tup = janet_wrap_tuple(janet_tuple_n(argv + 1, 1));
+            push_arg(p, tup);
+        } else {
+            push_arg(p, argv[1]);
+        }
     } else if (s->flags & (PFLAG_STRING | PFLAG_LONGSTRING)) {
         const uint8_t *str = janet_to_string(argv[1]);
         int32_t slen = janet_string_length(str);
         size_t newcount = p->bufcount + slen;
         if (p->bufcap < newcount) {
             size_t newcap = 2 * newcount;
-            p->buf = realloc(p->buf, newcap);
+            p->buf = janet_realloc(p->buf, newcap);
             if (p->buf == NULL) {
                 JANET_OUT_OF_MEMORY;
             }
@@ -887,13 +972,17 @@ static Janet cfun_parse_insert(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_parse_has_more(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_parse_has_more,
+              "(parser/has-more parser)",
+              "Check if the parser has more values in the value queue.") {
     janet_fixarity(argc, 1);
     JanetParser *p = janet_getabstract(argv, 0, &janet_parser_type);
     return janet_wrap_boolean(janet_parser_has_more(p));
 }
 
-static Janet cfun_parse_byte(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_parse_byte,
+              "(parser/byte parser b)",
+              "Input a single byte into the parser byte stream. Returns the parser.") {
     janet_fixarity(argc, 2);
     JanetParser *p = janet_getabstract(argv, 0, &janet_parser_type);
     int32_t i = janet_getinteger(argv, 1);
@@ -901,7 +990,13 @@ static Janet cfun_parse_byte(int32_t argc, Janet *argv) {
     return argv[0];
 }
 
-static Janet cfun_parse_status(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_parse_status,
+              "(parser/status parser)",
+              "Gets the current status of the parser state machine. The status will "
+              "be one of:\n\n"
+              "* :pending - a value is being parsed.\n\n"
+              "* :error - a parsing error was encountered.\n\n"
+              "* :root - the parser can either read more values or safely terminate.") {
     janet_fixarity(argc, 1);
     JanetParser *p = janet_getabstract(argv, 0, &janet_parser_type);
     const char *stat = NULL;
@@ -922,7 +1017,12 @@ static Janet cfun_parse_status(int32_t argc, Janet *argv) {
     return janet_ckeywordv(stat);
 }
 
-static Janet cfun_parse_error(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_parse_error,
+              "(parser/error parser)",
+              "If the parser is in the error state, returns the message associated with "
+              "that error. Otherwise, returns nil. Also flushes the parser state and parser "
+              "queue, so be sure to handle everything in the queue before calling "
+              "parser/error.") {
     janet_fixarity(argc, 1);
     JanetParser *p = janet_getabstract(argv, 0, &janet_parser_type);
     const char *err = janet_parser_error(p);
@@ -934,22 +1034,52 @@ static Janet cfun_parse_error(int32_t argc, Janet *argv) {
     return janet_wrap_nil();
 }
 
-static Janet cfun_parse_produce(int32_t argc, Janet *argv) {
-    janet_fixarity(argc, 1);
+JANET_CORE_FN(cfun_parse_produce,
+              "(parser/produce parser &opt wrap)",
+              "Dequeue the next value in the parse queue. Will return nil if "
+              "no parsed values are in the queue, otherwise will dequeue the "
+              "next value. If `wrap` is truthy, will return a 1-element tuple that "
+              "wraps the result. This tuple can be used for source-mapping "
+              "purposes.") {
+    janet_arity(argc, 1, 2);
     JanetParser *p = janet_getabstract(argv, 0, &janet_parser_type);
-    return janet_parser_produce(p);
+    if (argc == 2 && janet_truthy(argv[1])) {
+        return janet_parser_produce_wrapped(p);
+    } else {
+        return janet_parser_produce(p);
+    }
 }
 
-static Janet cfun_parse_flush(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_parse_flush,
+              "(parser/flush parser)",
+              "Clears the parser state and parse queue. Can be used to reset the parser "
+              "if an error was encountered. Does not reset the line and column counter, so "
+              "to begin parsing in a new context, create a new parser.") {
     janet_fixarity(argc, 1);
     JanetParser *p = janet_getabstract(argv, 0, &janet_parser_type);
     janet_parser_flush(p);
     return argv[0];
 }
 
-static Janet cfun_parse_where(int32_t argc, Janet *argv) {
-    janet_fixarity(argc, 1);
+JANET_CORE_FN(cfun_parse_where,
+              "(parser/where parser &opt line col)",
+              "Returns the current line number and column of the parser's internal state. If line is "
+              "provided, the current line number of the parser is first set to that value. If column is "
+              "also provided, the current column number of the parser is also first set to that value.") {
+    janet_arity(argc, 1, 3);
     JanetParser *p = janet_getabstract(argv, 0, &janet_parser_type);
+    if (argc > 1) {
+        int32_t line = janet_getinteger(argv, 1);
+        if (line < 1)
+            janet_panicf("invalid line number %d", line);
+        p->line = (size_t) line;
+    }
+    if (argc > 2) {
+        int32_t column = janet_getinteger(argv, 2);
+        if (column < 0)
+            janet_panicf("invalid column number %d", column);
+        p->column = (size_t) column;
+    }
     Janet *tup = janet_tuple_begin(2);
     tup[0] = janet_wrap_integer(p->line);
     tup[1] = janet_wrap_integer(p->column);
@@ -965,8 +1095,9 @@ static Janet janet_wrap_parse_state(JanetParseState *s, Janet *args,
 
     if (s->flags & PFLAG_CONTAINER) {
         JanetArray *container_args = janet_array(s->argn);
-        container_args->count = s->argn;
-        safe_memcpy(container_args->data, args, sizeof(args[0])*s->argn);
+        for (int32_t i = 0; i < s->argn; i++) {
+            janet_array_push(container_args, args[i]);
+        }
         janet_table_put(state, janet_ckeywordv("args"),
                         janet_wrap_array(container_args));
     }
@@ -1061,11 +1192,14 @@ static Janet parser_state_frames(const JanetParser *p) {
     JanetArray *states = janet_array(count);
     states->count = count;
     uint8_t *buf = p->buf;
-    Janet *args = p->args;
+    /* Iterate arg stack backwards */
+    Janet *args = p->args + p->argcount;
     for (int32_t i = count - 1; i >= 0; --i) {
         JanetParseState *s = p->states + i;
+        if (s->flags & PFLAG_CONTAINER) {
+            args -= s->argn;
+        }
         states->data[i] = janet_wrap_parse_state(s, args, buf, (uint32_t) p->bufcount);
-        args -= s->argn;
     }
     return janet_wrap_array(states);
 }
@@ -1076,7 +1210,16 @@ static const struct ParserStateGetter parser_state_getters[] = {
     {NULL, NULL}
 };
 
-static Janet cfun_parse_state(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_parse_state,
+              "(parser/state parser &opt key)",
+              "Returns a representation of the internal state of the parser. If a key is passed, "
+              "only that information about the state is returned. Allowed keys are:\n\n"
+              "* :delimiters - Each byte in the string represents a nested data structure. For example, "
+              "if the parser state is '([\"', then the parser is in the middle of parsing a "
+              "string inside of square brackets inside parentheses. Can be used to augment a REPL prompt.\n\n"
+              "* :frames - Each table in the array represents a 'frame' in the parser state. Frames "
+              "contain information about the start of the expression being parsed as well as the "
+              "type of that expression and some type-specific information.") {
     janet_arity(argc, 1, 2);
     const uint8_t *key = NULL;
     JanetParser *p = janet_getabstract(argv, 0, &janet_parser_type);
@@ -1104,7 +1247,11 @@ static Janet cfun_parse_state(int32_t argc, Janet *argv) {
     }
 }
 
-static Janet cfun_parse_clone(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_parse_clone,
+              "(parser/clone p)",
+              "Creates a deep clone of a parser that is identical to the input parser. "
+              "This cloned parser can be used to continue parsing from a good checkpoint "
+              "if parsing later fails. Returns a new parser.") {
     janet_fixarity(argc, 1);
     JanetParser *src = janet_getabstract(argv, 0, &janet_parser_type);
     JanetParser *dest = janet_abstract(&janet_parser_type, sizeof(JanetParser));
@@ -1134,101 +1281,28 @@ static int parserget(void *p, Janet key, Janet *out) {
     return janet_getmethod(janet_unwrap_keyword(key), parser_methods, out);
 }
 
-static const JanetReg parse_cfuns[] = {
-    {
-        "parser/new", cfun_parse_parser,
-        JDOC("(parser/new)\n\n"
-             "Creates and returns a new parser object. Parsers are state machines "
-             "that can receive bytes, and generate a stream of values.")
-    },
-    {
-        "parser/clone", cfun_parse_clone,
-        JDOC("(parser/clone p)\n\n"
-             "Creates a deep clone of a parser that is identical to the input parser. "
-             "This cloned parser can be used to continue parsing from a good checkpoint "
-             "if parsing later fails. Returns a new parser.")
-    },
-    {
-        "parser/has-more", cfun_parse_has_more,
-        JDOC("(parser/has-more parser)\n\n"
-             "Check if the parser has more values in the value queue.")
-    },
-    {
-        "parser/produce", cfun_parse_produce,
-        JDOC("(parser/produce parser)\n\n"
-             "Dequeue the next value in the parse queue. Will return nil if "
-             "no parsed values are in the queue, otherwise will dequeue the "
-             "next value.")
-    },
-    {
-        "parser/consume", cfun_parse_consume,
-        JDOC("(parser/consume parser bytes &opt index)\n\n"
-             "Input bytes into the parser and parse them. Will not throw errors "
-             "if there is a parse error. Starts at the byte index given by index. Returns "
-             "the number of bytes read.")
-    },
-    {
-        "parser/byte", cfun_parse_byte,
-        JDOC("(parser/byte parser b)\n\n"
-             "Input a single byte into the parser byte stream. Returns the parser.")
-    },
-    {
-        "parser/error", cfun_parse_error,
-        JDOC("(parser/error parser)\n\n"
-             "If the parser is in the error state, returns the message associated with "
-             "that error. Otherwise, returns nil. Also flushes the parser state and parser "
-             "queue, so be sure to handle everything in the queue before calling "
-             "parser/error.")
-    },
-    {
-        "parser/status", cfun_parse_status,
-        JDOC("(parser/status parser)\n\n"
-             "Gets the current status of the parser state machine. The status will "
-             "be one of:\n\n"
-             "\t:pending - a value is being parsed.\n"
-             "\t:error - a parsing error was encountered.\n"
-             "\t:root - the parser can either read more values or safely terminate.")
-    },
-    {
-        "parser/flush", cfun_parse_flush,
-        JDOC("(parser/flush parser)\n\n"
-             "Clears the parser state and parse queue. Can be used to reset the parser "
-             "if an error was encountered. Does not reset the line and column counter, so "
-             "to begin parsing in a new context, create a new parser.")
-    },
-    {
-        "parser/state", cfun_parse_state,
-        JDOC("(parser/state parser &opt key)\n\n"
-             "Returns a representation of the internal state of the parser. If a key is passed, "
-             "only that information about the state is returned. Allowed keys are:\n\n"
-             "\t:delimiters - Each byte in the string represents a nested data structure. For example, "
-             "if the parser state is '([\"', then the parser is in the middle of parsing a "
-             "string inside of square brackets inside parentheses. Can be used to augment a REPL prompt."
-             "\t:frames - Each table in the array represents a 'frame' in the parser state. Frames "
-             "contain information about the start of the expression being parsed as well as the "
-             "type of that expression and some type-specific information.")
-    },
-    {
-        "parser/where", cfun_parse_where,
-        JDOC("(parser/where parser)\n\n"
-             "Returns the current line number and column of the parser's internal state.")
-    },
-    {
-        "parser/eof", cfun_parse_eof,
-        JDOC("(parser/eof parser)\n\n"
-             "Indicate that the end of file was reached to the parser. This puts the parser in the :dead state.")
-    },
-    {
-        "parser/insert", cfun_parse_insert,
-        JDOC("(parser/insert parser value)\n\n"
-             "Insert a value into the parser. This means that the parser state can be manipulated "
-             "in between chunks of bytes. This would allow a user to add extra elements to arrays "
-             "and tuples, for example. Returns the parser.")
-    },
-    {NULL, NULL, NULL}
-};
+static Janet parsernext(void *p, Janet key) {
+    (void) p;
+    return janet_nextmethod(parser_methods, key);
+}
 
 /* Load the library */
 void janet_lib_parse(JanetTable *env) {
-    janet_core_cfuns(env, NULL, parse_cfuns);
+    JanetRegExt parse_cfuns[] = {
+        JANET_CORE_REG("parser/new", cfun_parse_parser),
+        JANET_CORE_REG("parser/clone", cfun_parse_clone),
+        JANET_CORE_REG("parser/has-more", cfun_parse_has_more),
+        JANET_CORE_REG("parser/produce", cfun_parse_produce),
+        JANET_CORE_REG("parser/consume", cfun_parse_consume),
+        JANET_CORE_REG("parser/byte", cfun_parse_byte),
+        JANET_CORE_REG("parser/error", cfun_parse_error),
+        JANET_CORE_REG("parser/status", cfun_parse_status),
+        JANET_CORE_REG("parser/flush", cfun_parse_flush),
+        JANET_CORE_REG("parser/state", cfun_parse_state),
+        JANET_CORE_REG("parser/where", cfun_parse_where),
+        JANET_CORE_REG("parser/eof", cfun_parse_eof),
+        JANET_CORE_REG("parser/insert", cfun_parse_insert),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, parse_cfuns);
 }

src/core/peg.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -44,9 +44,13 @@ typedef struct {
     JanetArray *captures;
     JanetBuffer *scratch;
     JanetBuffer *tags;
+    JanetArray *tagged_captures;
     const Janet *extrav;
+    int32_t *linemap;
     int32_t extrac;
     int32_t depth;
+    int32_t linemaplen;
+    int32_t has_backref;
     enum {
         PEG_MODE_NORMAL,
         PEG_MODE_ACCUMULATE
@@ -58,6 +62,7 @@ typedef struct {
  * if one branch fails and try a new branch. */
 typedef struct {
     int32_t cap;
+    int32_t tcap;
     int32_t scratch;
 } CapState;
 
@@ -66,6 +71,7 @@ static CapState cap_save(PegState *s) {
     CapState cs;
     cs.scratch = s->scratch->count;
     cs.cap = s->captures->count;
+    cs.tcap = s->tagged_captures->count;
     return cs;
 }
 
@@ -73,7 +79,15 @@ static CapState cap_save(PegState *s) {
 static void cap_load(PegState *s, CapState cs) {
     s->scratch->count = cs.scratch;
     s->captures->count = cs.cap;
-    s->tags->count = cs.cap;
+    s->tags->count = cs.tcap;
+    s->tagged_captures->count = cs.tcap;
+}
+
+/* Load a saved capture state in the case of success. Keeps
+ * tagged captures around for backref. */
+static void cap_load_keept(PegState *s, CapState cs) {
+    s->scratch->count = cs.scratch;
+    s->captures->count = cs.cap;
 }
 
 /* Add a capture */
@@ -81,12 +95,72 @@ static void pushcap(PegState *s, Janet capture, uint32_t tag) {
     if (s->mode == PEG_MODE_ACCUMULATE) {
         janet_to_string_b(s->scratch, capture);
     }
-    if (tag || s->mode == PEG_MODE_NORMAL) {
+    if (s->mode == PEG_MODE_NORMAL) {
         janet_array_push(s->captures, capture);
+    }
+    if (s->has_backref) {
+        janet_array_push(s->tagged_captures, capture);
         janet_buffer_push_u8(s->tags, tag);
     }
 }
 
+/* Lazily generate line map to get line and column information for PegState.
+ * line and column are 1-indexed. */
+typedef struct {
+    int32_t line;
+    int32_t col;
+} LineCol;
+static LineCol get_linecol_from_position(PegState *s, int32_t position) {
+    /* Generate if not made yet */
+    if (s->linemaplen < 0) {
+        int32_t newline_count = 0;
+        for (const uint8_t *c = s->text_start; c < s->text_end; c++) {
+            if (*c == '\n') newline_count++;
+        }
+        int32_t *mem = janet_smalloc(sizeof(int32_t) * newline_count);
+        size_t index = 0;
+        for (const uint8_t *c = s->text_start; c < s->text_end; c++) {
+            if (*c == '\n') mem[index++] = (int32_t)(c - s->text_start);
+        }
+        s->linemaplen = newline_count;
+        s->linemap = mem;
+    }
+    /* Do binary search for line. Slightly modified from classic binary search:
+     * - if we find that our current character is a line break, just return immediately.
+     *   a newline character is consider to be on the same line as the character before
+     *   (\n is line terminator, not line separator).
+     * - in the not-found case, we still want to find the greatest-indexed newline that
+     *   is before position. we use that to calcuate the line and column.
+     * - in the case that lo = 0 and s->linemap[0] is still greater than position, we
+     *   are on the first line and our column is position + 1. */
+    int32_t hi = s->linemaplen; /* hi is greater than the actual line */
+    int32_t lo = 0; /* lo is less than or equal to the actual line */
+    LineCol ret;
+    while (lo + 1 < hi) {
+        int32_t mid = lo + (hi - lo) / 2;
+        if (s->linemap[mid] >= position) {
+            hi = mid;
+        } else {
+            lo = mid;
+        }
+    }
+    /* first line case */
+    if (s->linemaplen == 0 || (lo == 0 && s->linemap[0] >= position)) {
+        ret.line = 1;
+        ret.col = position + 1;
+    } else {
+        ret.line = lo + 2;
+        ret.col = position - s->linemap[lo];
+    }
+    return ret;
+}
+
+/* Convert a uint64_t to a int64_t by wrapping to a maximum number of bytes */
+static int64_t peg_convert_u64_s64(uint64_t from, int width) {
+    int shift = 8 * (8 - width);
+    return ((int64_t)(from << shift)) >> shift;
+}
+
 /* Prevent stack overflow */
 #define down1(s) do { \
     if (0 == --((s)->depth)) janet_panic("peg/match recursed too deeply"); \
@@ -212,7 +286,7 @@ tail:
             const uint8_t *next_text;
             CapState cs = cap_save(s);
             down1(s);
-            while (text < s->text_end) {
+            while (text <= s->text_end) {
                 CapState cs2 = cap_save(s);
                 next_text = peg_rule(s, rule_a, text);
                 if (next_text) {
@@ -222,7 +296,7 @@ tail:
                 text++;
             }
             up1(s);
-            if (text >= s->text_end) {
+            if (text > s->text_end) {
                 cap_load(s, cs);
                 return NULL;
             }
@@ -262,7 +336,7 @@ tail:
             uint32_t tag = rule[2];
             for (int32_t i = s->tags->count - 1; i >= 0; i--) {
                 if (s->tags->data[i] == search) {
-                    pushcap(s, s->captures->data[i], tag);
+                    pushcap(s, s->tagged_captures->data[i], tag);
                     return text;
                 }
             }
@@ -274,6 +348,18 @@ tail:
             return text;
         }
 
+        case RULE_LINE: {
+            LineCol lc = get_linecol_from_position(s, (int32_t)(text - s->text_start));
+            pushcap(s, janet_wrap_number((double)(lc.line)), rule[1]);
+            return text;
+        }
+
+        case RULE_COLUMN: {
+            LineCol lc = get_linecol_from_position(s, (int32_t)(text - s->text_start));
+            pushcap(s, janet_wrap_number((double)(lc.col)), rule[1]);
+            return text;
+        }
+
         case RULE_ARGUMENT: {
             int32_t index = ((int32_t *)rule)[1];
             Janet capture = (index >= s->extrac) ? janet_wrap_nil() : s->extrav[index];
@@ -287,20 +373,39 @@ tail:
         }
 
         case RULE_CAPTURE: {
-            uint32_t tag = rule[2];
             down1(s);
             const uint8_t *result = peg_rule(s, s->bytecode + rule[1], text);
             up1(s);
             if (!result) return NULL;
             /* Specialized pushcap - avoid intermediate string creation */
-            if (!tag && s->mode == PEG_MODE_ACCUMULATE) {
+            if (!s->has_backref && s->mode == PEG_MODE_ACCUMULATE) {
                 janet_buffer_push_bytes(s->scratch, text, (int32_t)(result - text));
             } else {
+                uint32_t tag = rule[2];
                 pushcap(s, janet_stringv(text, (int32_t)(result - text)), tag);
             }
             return result;
         }
 
+        case RULE_CAPTURE_NUM: {
+            down1(s);
+            const uint8_t *result = peg_rule(s, s->bytecode + rule[1], text);
+            up1(s);
+            if (!result) return NULL;
+            /* check number parsing */
+            double x = 0.0;
+            int32_t base = (int32_t) rule[2];
+            if (janet_scan_number_base(text, (int32_t)(result - text), base, &x)) return NULL;
+            /* Specialized pushcap - avoid intermediate string creation */
+            if (!s->has_backref && s->mode == PEG_MODE_ACCUMULATE) {
+                janet_buffer_push_bytes(s->scratch, text, (int32_t)(result - text));
+            } else {
+                uint32_t tag = rule[3];
+                pushcap(s, janet_wrap_number(x), tag);
+            }
+            return result;
+        }
+
         case RULE_ACCUMULATE: {
             uint32_t tag = rule[2];
             int oldmode = s->mode;
@@ -317,7 +422,7 @@ tail:
             if (!result) return NULL;
             Janet cap = janet_stringv(s->scratch->data + cs.scratch,
                                       s->scratch->count - cs.scratch);
-            cap_load(s, cs);
+            cap_load_keept(s, cs);
             pushcap(s, cap, tag);
             return result;
         }
@@ -348,7 +453,7 @@ tail:
                         s->captures->data + cs.cap,
                         sizeof(Janet) * num_sub_captures);
             sub_captures->count = num_sub_captures;
-            cap_load(s, cs);
+            cap_load_keept(s, cs);
             pushcap(s, janet_wrap_array(sub_captures), tag);
             return result;
         }
@@ -393,7 +498,7 @@ tail:
                                      s->captures->data + cs.cap);
                     break;
             }
-            cap_load(s, cs);
+            cap_load_keept(s, cs);
             if (rule[0] == RULE_MATCHTIME && !janet_truthy(cap)) return NULL;
             pushcap(s, cap, tag);
             return result;
@@ -414,8 +519,8 @@ tail:
             } else {
                 /* Throw generic error */
                 int32_t start = (int32_t)(text - s->text_start);
-                int32_t end = (int32_t)(result - s->text_start);
-                janet_panicf("match error in range (%d:%d)", start, end);
+                LineCol lc = get_linecol_from_position(s, start);
+                janet_panicf("match error at line %d, column %d", lc.line, lc.col);
             }
             return NULL;
         }
@@ -424,7 +529,7 @@ tail:
             uint32_t search = rule[1];
             for (int32_t i = s->tags->count - 1; i >= 0; i--) {
                 if (s->tags->data[i] == search) {
-                    Janet capture = s->captures->data[i];
+                    Janet capture = s->tagged_captures->data[i];
                     if (!janet_checktype(capture, JANET_STRING))
                         return NULL;
                     const uint8_t *bytes = janet_unwrap_string(capture);
@@ -469,6 +574,71 @@ tail:
             return next_text;
         }
 
+        case RULE_READINT: {
+            uint32_t tag = rule[2];
+            uint32_t signedness = rule[1] & 0x10;
+            uint32_t endianess = rule[1] & 0x20;
+            int width = (int)(rule[1] & 0xF);
+            if (text + width > s->text_end) return NULL;
+            uint64_t accum = 0;
+            if (endianess) {
+                /* BE */
+                for (int i = 0; i < width; i++) accum = (accum << 8) | text[i];
+            } else {
+                /* LE */
+                for (int i = width - 1; i >= 0; i--) accum = (accum << 8) | text[i];
+            }
+
+            Janet capture_value;
+            /* We can only parse integeres of greater than 6 bytes reliable if int-types are enabled.
+             * Otherwise, we may lose precision, so 6 is the maximum size when int-types are disabled. */
+#ifdef JANET_INT_TYPES
+            if (width > 6) {
+                if (signedness) {
+                    capture_value = janet_wrap_s64(peg_convert_u64_s64(accum, width));
+                } else {
+                    capture_value = janet_wrap_u64(accum);
+                }
+            } else
+#endif
+            {
+                double double_value;
+                if (signedness) {
+                    double_value = (double)(peg_convert_u64_s64(accum, width));
+                } else {
+                    double_value = (double)accum;
+                }
+                capture_value = janet_wrap_number(double_value);
+            }
+
+            pushcap(s, capture_value, tag);
+            return text + width;
+        }
+
+        case RULE_UNREF: {
+            int32_t tcap = s->tags->count;
+            down1(s);
+            const uint8_t *result = peg_rule(s, s->bytecode + rule[1], text);
+            up1(s);
+            if (!result) return NULL;
+            int32_t final_tcap = s->tags->count;
+            /* Truncate tagged captures to not include items of the given tag */
+            int32_t w = tcap;
+            /* If no tag is given, drop ALL tagged captures */
+            if (rule[2]) {
+                for (int32_t i = tcap; i < final_tcap; i++) {
+                    if (s->tags->data[i] != (0xFF & rule[2])) {
+                        s->tags->data[w] = s->tags->data[i];
+                        s->tagged_captures->data[w] = s->tagged_captures->data[i];
+                        w++;
+                    }
+                }
+            }
+            s->tags->count = w;
+            s->tagged_captures->count = w;
+            return result;
+        }
+
     }
 }
 
@@ -485,6 +655,7 @@ typedef struct {
     Janet form;
     int depth;
     uint32_t nexttag;
+    int has_backref;
 } Builder;
 
 /* Forward declaration to allow recursion */
@@ -783,10 +954,13 @@ static void spec_not(Builder *b, int32_t argc, const Janet *argv) {
     spec_onerule(b, argc, argv, RULE_NOT);
 }
 static void spec_error(Builder *b, int32_t argc, const Janet *argv) {
-    spec_onerule(b, argc, argv, RULE_ERROR);
-}
-static void spec_drop(Builder *b, int32_t argc, const Janet *argv) {
-    spec_onerule(b, argc, argv, RULE_DROP);
+    if (argc == 0) {
+        Reserve r = reserve(b, 2);
+        uint32_t rule = peg_compile1(b, janet_wrap_number(0));
+        emit_1(r, RULE_ERROR, rule);
+    } else {
+        spec_onerule(b, argc, argv, RULE_ERROR);
+    }
 }
 static void spec_to(Builder *b, int32_t argc, const Janet *argv) {
     spec_onerule(b, argc, argv, RULE_TO);
@@ -794,6 +968,9 @@ static void spec_to(Builder *b, int32_t argc, const Janet *argv) {
 static void spec_thru(Builder *b, int32_t argc, const Janet *argv) {
     spec_onerule(b, argc, argv, RULE_THRU);
 }
+static void spec_drop(Builder *b, int32_t argc, const Janet *argv) {
+    spec_onerule(b, argc, argv, RULE_DROP);
+}
 
 /* Rule of the form [rule, tag] */
 static void spec_cap1(Builder *b, int32_t argc, const Janet *argv, uint32_t op) {
@@ -813,12 +990,35 @@ static void spec_accumulate(Builder *b, int32_t argc, const Janet *argv) {
 static void spec_group(Builder *b, int32_t argc, const Janet *argv) {
     spec_cap1(b, argc, argv, RULE_GROUP);
 }
+static void spec_unref(Builder *b, int32_t argc, const Janet *argv) {
+    spec_cap1(b, argc, argv, RULE_UNREF);
+}
+
+static void spec_capture_number(Builder *b, int32_t argc, const Janet *argv) {
+    peg_arity(b, argc, 1, 3);
+    Reserve r = reserve(b, 4);
+    uint32_t base = 0;
+    if (argc >= 2) {
+        if (!janet_checktype(argv[1], JANET_NIL)) {
+            if (!janet_checkint(argv[1])) goto error;
+            base = (uint32_t) janet_unwrap_integer(argv[1]);
+            if (base < 2 || base > 36) goto error;
+        }
+    }
+    uint32_t tag = (argc == 3) ? emit_tag(b, argv[2]) : 0;
+    uint32_t rule = peg_compile1(b, argv[0]);
+    emit_3(r, RULE_CAPTURE_NUM, rule, base, tag);
+    return;
+error:
+    peg_panicf(b, "expected integer between 2 and 36, got %v", argv[2]);
+}
 
 static void spec_reference(Builder *b, int32_t argc, const Janet *argv) {
     peg_arity(b, argc, 1, 2);
     Reserve r = reserve(b, 3);
     uint32_t search = emit_tag(b, argv[0]);
     uint32_t tag = (argc == 2) ? emit_tag(b, argv[1]) : 0;
+    b->has_backref = 1;
     emit_2(r, RULE_GETTAG, search, tag);
 }
 
@@ -833,8 +1033,15 @@ static void spec_tag1(Builder *b, int32_t argc, const Janet *argv, uint32_t op)
 static void spec_position(Builder *b, int32_t argc, const Janet *argv) {
     spec_tag1(b, argc, argv, RULE_POSITION);
 }
+static void spec_line(Builder *b, int32_t argc, const Janet *argv) {
+    spec_tag1(b, argc, argv, RULE_LINE);
+}
+static void spec_column(Builder *b, int32_t argc, const Janet *argv) {
+    spec_tag1(b, argc, argv, RULE_COLUMN);
+}
 
 static void spec_backmatch(Builder *b, int32_t argc, const Janet *argv) {
+    b->has_backref = 1;
     spec_tag1(b, argc, argv, RULE_BACKMATCH);
 }
 
@@ -876,6 +1083,36 @@ static void spec_matchtime(Builder *b, int32_t argc, const Janet *argv) {
     emit_3(r, RULE_MATCHTIME, subrule, cindex, tag);
 }
 
+#ifdef JANET_INT_TYPES
+#define JANET_MAX_READINT_WIDTH 8
+#else
+#define JANET_MAX_READINT_WIDTH 6
+#endif
+
+static void spec_readint(Builder *b, int32_t argc, const Janet *argv, uint32_t mask) {
+    peg_arity(b, argc, 1, 2);
+    Reserve r = reserve(b, 3);
+    uint32_t tag = (argc == 2) ? emit_tag(b, argv[1]) : 0;
+    int32_t width = peg_getnat(b, argv[0]);
+    if ((width < 0) || (width > JANET_MAX_READINT_WIDTH)) {
+        peg_panicf(b, "width must be between 0 and %d, got %d", JANET_MAX_READINT_WIDTH, width);
+    }
+    emit_2(r, RULE_READINT, mask | ((uint32_t) width), tag);
+}
+
+static void spec_uint_le(Builder *b, int32_t argc, const Janet *argv) {
+    spec_readint(b, argc, argv, 0x0u);
+}
+static void spec_int_le(Builder *b, int32_t argc, const Janet *argv) {
+    spec_readint(b, argc, argv, 0x10u);
+}
+static void spec_uint_be(Builder *b, int32_t argc, const Janet *argv) {
+    spec_readint(b, argc, argv, 0x20u);
+}
+static void spec_int_be(Builder *b, int32_t argc, const Janet *argv) {
+    spec_readint(b, argc, argv, 0x30u);
+}
+
 /* Special compiler form */
 typedef void (*Special)(Builder *b, int32_t argc, const Janet *argv);
 typedef struct {
@@ -906,15 +1143,20 @@ static const SpecialPair peg_specials[] = {
     {"capture", spec_capture},
     {"choice", spec_choice},
     {"cmt", spec_matchtime},
+    {"column", spec_column},
     {"constant", spec_constant},
     {"drop", spec_drop},
     {"error", spec_error},
     {"group", spec_group},
     {"if", spec_if},
     {"if-not", spec_ifnot},
+    {"int", spec_int_le},
+    {"int-be", spec_int_be},
     {"lenprefix", spec_lenprefix},
+    {"line", spec_line},
     {"look", spec_look},
     {"not", spec_not},
+    {"number", spec_capture_number},
     {"opt", spec_opt},
     {"position", spec_position},
     {"quote", spec_capture},
@@ -926,6 +1168,9 @@ static const SpecialPair peg_specials[] = {
     {"some", spec_some},
     {"thru", spec_thru},
     {"to", spec_to},
+    {"uint", spec_uint_le},
+    {"uint-be", spec_uint_be},
+    {"unref", spec_unref},
 };
 
 /* Compile a janet value into a rule and return the rule index. */
@@ -942,7 +1187,9 @@ static uint32_t peg_compile1(Builder *b, Janet peg) {
     for (; i > 0 && janet_checktype(peg, JANET_KEYWORD); --i) {
         Janet nextPeg = janet_table_get_ex(grammar, peg, &grammar);
         if (!grammar || janet_checktype(nextPeg, JANET_NIL)) {
-            nextPeg = janet_table_get(b->default_grammar, peg);
+            nextPeg = (b->default_grammar == NULL)
+                      ? janet_wrap_nil()
+                      : janet_table_get(b->default_grammar, peg);
             if (janet_checktype(nextPeg, JANET_NIL)) {
                 peg_panic(b, "unknown rule");
             }
@@ -1006,6 +1253,18 @@ static uint32_t peg_compile1(Builder *b, Janet peg) {
             emit_bytes(b, RULE_LITERAL, len, str);
             break;
         }
+        case JANET_TABLE: {
+            /* Build grammar table */
+            JanetTable *new_grammar = janet_table_clone(janet_unwrap_table(peg));
+            new_grammar->proto = grammar;
+            b->grammar = grammar = new_grammar;
+            /* Run the main rule */
+            Janet main_rule = janet_table_rawget(grammar, janet_ckeywordv("main"));
+            if (janet_checktype(main_rule, JANET_NIL))
+                peg_panic(b, "grammar requires :main rule");
+            rule = peg_compile1(b, main_rule);
+            break;
+        }
         case JANET_STRUCT: {
             /* Build grammar table */
             const JanetKV *st = janet_unwrap_struct(peg);
@@ -1129,12 +1388,13 @@ static void *peg_unmarshal(JanetMarshalContext *ctx) {
      * bytecode. */
     uint32_t blen = (int32_t) peg->bytecode_len;
     uint32_t clen = peg->num_constants;
-    uint8_t *op_flags = calloc(1, blen);
+    uint8_t *op_flags = janet_calloc(1, blen);
     if (NULL == op_flags) {
         JANET_OUT_OF_MEMORY;
     }
 
     /* verify peg bytecode */
+    int32_t has_backref = 0;
     uint32_t i = 0;
     while (i < blen) {
         uint32_t instr = bytecode[i];
@@ -1148,9 +1408,15 @@ static void *peg_unmarshal(JanetMarshalContext *ctx) {
             case RULE_NOTNCHAR:
             case RULE_RANGE:
             case RULE_POSITION:
+            case RULE_LINE:
+            case RULE_COLUMN:
+                /* [1 word] */
+                i += 2;
+                break;
             case RULE_BACKMATCH:
                 /* [1 word] */
                 i += 2;
+                has_backref = 1;
                 break;
             case RULE_SET:
                 /* [8 words] */
@@ -1191,18 +1457,29 @@ static void *peg_unmarshal(JanetMarshalContext *ctx) {
                 i += 4;
                 break;
             case RULE_ARGUMENT:
+                /* [searchtag, tag] */
+                i += 3;
+                break;
             case RULE_GETTAG:
                 /* [searchtag, tag] */
                 i += 3;
+                has_backref = 1;
                 break;
             case RULE_CONSTANT:
                 /* [constant, tag] */
                 if (rule[1] >= clen) goto bad;
                 i += 3;
                 break;
+            case RULE_CAPTURE_NUM:
+                /* [rule, base, tag] */
+                if (rule[1] >= blen) goto bad;
+                op_flags[rule[1]] |= 0x01;
+                i += 4;
+                break;
             case RULE_ACCUMULATE:
             case RULE_GROUP:
             case RULE_CAPTURE:
+            case RULE_UNREF:
                 /* [rule, tag] */
                 if (rule[1] >= blen) goto bad;
                 op_flags[rule[1]] |= 0x01;
@@ -1226,6 +1503,11 @@ static void *peg_unmarshal(JanetMarshalContext *ctx) {
                 op_flags[rule[1]] |= 0x01;
                 i += 2;
                 break;
+            case RULE_READINT:
+                /* [ width | (endianess << 5) | (signedness << 6), tag ] */
+                if (rule[1] > JANET_MAX_READINT_WIDTH) goto bad;
+                i += 3;
+                break;
             default:
                 goto bad;
         }
@@ -1242,25 +1524,31 @@ static void *peg_unmarshal(JanetMarshalContext *ctx) {
     /* Good return */
     peg->bytecode = bytecode;
     peg->constants = constants;
-    free(op_flags);
+    peg->has_backref = has_backref;
+    janet_free(op_flags);
     return peg;
 
 bad:
-    free(op_flags);
+    janet_free(op_flags);
     janet_panic("invalid peg bytecode");
 }
 
 static int cfun_peg_getter(JanetAbstract a, Janet key, Janet *out);
+static Janet peg_next(void *p, Janet key);
 
 const JanetAbstractType janet_peg_type = {
     "core/peg",
     NULL,
     peg_mark,
     cfun_peg_getter,
-    NULL,
+    NULL, /* put */
     peg_marshal,
     peg_unmarshal,
-    JANET_ATEND_UNMARSHAL
+    NULL, /* tostring */
+    NULL, /* compare */
+    NULL, /* hash */
+    peg_next,
+    JANET_ATEND_NEXT
 };
 
 /* Convert Builder to JanetPeg (Janet Abstract Value) */
@@ -1278,6 +1566,7 @@ static JanetPeg *make_peg(Builder *b) {
     safe_memcpy(peg->bytecode, b->bytecode, bytecode_size);
     safe_memcpy(peg->constants, b->constants, constants_size);
     peg->bytecode_len = janet_v_count(b->bytecode);
+    peg->has_backref = b->has_backref;
     return peg;
 }
 
@@ -1285,13 +1574,20 @@ static JanetPeg *make_peg(Builder *b) {
 static JanetPeg *compile_peg(Janet x) {
     Builder builder;
     builder.grammar = janet_table(0);
-    builder.default_grammar = janet_get_core_table("default-peg-grammar");
+    builder.default_grammar = NULL;
+    {
+        Janet default_grammarv = janet_dyn("peg-grammar");
+        if (janet_checktype(default_grammarv, JANET_TABLE)) {
+            builder.default_grammar = janet_unwrap_table(default_grammarv);
+        }
+    }
     builder.tags = janet_table(0);
     builder.constants = NULL;
     builder.bytecode = NULL;
     builder.nexttag = 1;
     builder.form = x;
     builder.depth = JANET_RECURSION_GUARD;
+    builder.has_backref = 0;
     peg_compile1(&builder, x);
     JanetPeg *peg = make_peg(&builder);
     builder_cleanup(&builder);
@@ -1302,74 +1598,181 @@ static JanetPeg *compile_peg(Janet x) {
  * C Functions
  */
 
-static Janet cfun_peg_compile(int32_t argc, Janet *argv) {
+JANET_CORE_FN(cfun_peg_compile,
+              "(peg/compile peg)",
+              "Compiles a peg source data structure into a <core/peg>. This will speed up matching "
+              "if the same peg will be used multiple times. Will also use `(dyn :peg-grammar)` to suppliment "
+              "the grammar of the peg for otherwise undefined peg keywords.") {
     janet_fixarity(argc, 1);
     JanetPeg *peg = compile_peg(argv[0]);
     return janet_wrap_abstract(peg);
 }
 
-static Janet cfun_peg_match(int32_t argc, Janet *argv) {
-    janet_arity(argc, 2, -1);
+/* Common data for peg cfunctions */
+typedef struct {
     JanetPeg *peg;
+    PegState s;
+    JanetByteView bytes;
+    JanetByteView repl;
+    int32_t start;
+} PegCall;
+
+/* Initialize state for peg cfunctions */
+static PegCall peg_cfun_init(int32_t argc, Janet *argv, int get_replace) {
+    PegCall ret;
+    int32_t min = get_replace ? 3 : 2;
+    janet_arity(argc, get_replace, -1);
     if (janet_checktype(argv[0], JANET_ABSTRACT) &&
             janet_abstract_type(janet_unwrap_abstract(argv[0])) == &janet_peg_type) {
-        peg = janet_unwrap_abstract(argv[0]);
+        ret.peg = janet_unwrap_abstract(argv[0]);
     } else {
-        peg = compile_peg(argv[0]);
+        ret.peg = compile_peg(argv[0]);
     }
-    JanetByteView bytes = janet_getbytes(argv, 1);
-    int32_t start;
-    PegState s;
-    if (argc > 2) {
-        start = janet_gethalfrange(argv, 2, bytes.len, "offset");
-        s.extrac = argc - 3;
-        s.extrav = janet_tuple_n(argv + 3, argc - 3);
+    if (get_replace) {
+        ret.repl = janet_getbytes(argv, 1);
+        ret.bytes = janet_getbytes(argv, 2);
     } else {
-        start = 0;
-        s.extrac = 0;
-        s.extrav = NULL;
+        ret.bytes = janet_getbytes(argv, 1);
     }
-    s.mode = PEG_MODE_NORMAL;
-    s.text_start = bytes.bytes;
-    s.text_end = bytes.bytes + bytes.len;
-    s.depth = JANET_RECURSION_GUARD;
-    s.captures = janet_array(0);
-    s.scratch = janet_buffer(10);
-    s.tags = janet_buffer(10);
-    s.constants = peg->constants;
-    s.bytecode = peg->bytecode;
-    const uint8_t *result = peg_rule(&s, s.bytecode, bytes.bytes + start);
-    return result ? janet_wrap_array(s.captures) : janet_wrap_nil();
+    if (argc > min) {
+        ret.start = janet_gethalfrange(argv, min, ret.bytes.len, "offset");
+        ret.s.extrac = argc - min - 1;
+        ret.s.extrav = janet_tuple_n(argv + min + 1, argc - min - 1);
+    } else {
+        ret.start = 0;
+        ret.s.extrac = 0;
+        ret.s.extrav = NULL;
+    }
+    ret.s.mode = PEG_MODE_NORMAL;
+    ret.s.text_start = ret.bytes.bytes;
+    ret.s.text_end = ret.bytes.bytes + ret.bytes.len;
+    ret.s.depth = JANET_RECURSION_GUARD;
+    ret.s.captures = janet_array(0);
+    ret.s.tagged_captures = janet_array(0);
+    ret.s.scratch = janet_buffer(10);
+    ret.s.tags = janet_buffer(10);
+    ret.s.constants = ret.peg->constants;
+    ret.s.bytecode = ret.peg->bytecode;
+    ret.s.linemap = NULL;
+    ret.s.linemaplen = -1;
+    ret.s.has_backref = ret.peg->has_backref;
+    return ret;
 }
 
+static void peg_call_reset(PegCall *c) {
+    c->s.captures->count = 0;
+    c->s.scratch->count = 0;
+    c->s.tags->count = 0;
+}
+
+JANET_CORE_FN(cfun_peg_match,
+              "(peg/match peg text &opt start & args)",
+              "Match a Parsing Expression Grammar to a byte string and return an array of captured values. "
+              "Returns nil if text does not match the language defined by peg. The syntax of PEGs is documented on the Janet website.") {
+    PegCall c = peg_cfun_init(argc, argv, 0);
+    const uint8_t *result = peg_rule(&c.s, c.s.bytecode, c.bytes.bytes + c.start);
+    return result ? janet_wrap_array(c.s.captures) : janet_wrap_nil();
+}
+
+JANET_CORE_FN(cfun_peg_find,
+              "(peg/find peg text &opt start & args)",
+              "Find first index where the peg matches in text. Returns an integer, or nil if not found.") {
+    PegCall c = peg_cfun_init(argc, argv, 0);
+    for (int32_t i = c.start; i < c.bytes.len; i++) {
+        peg_call_reset(&c);
+        if (peg_rule(&c.s, c.s.bytecode, c.bytes.bytes + i))
+            return janet_wrap_integer(i);
+    }
+    return janet_wrap_nil();
+}
+
+JANET_CORE_FN(cfun_peg_find_all,
+              "(peg/find-all peg text &opt start & args)",
+              "Find all indexes where the peg matches in text. Returns an array of integers.") {
+    PegCall c = peg_cfun_init(argc, argv, 0);
+    JanetArray *ret = janet_array(0);
+    for (int32_t i = c.start; i < c.bytes.len; i++) {
+        peg_call_reset(&c);
+        if (peg_rule(&c.s, c.s.bytecode, c.bytes.bytes + i))
+            janet_array_push(ret, janet_wrap_integer(i));
+    }
+    return janet_wrap_array(ret);
+}
+
+static Janet cfun_peg_replace_generic(int32_t argc, Janet *argv, int only_one) {
+    PegCall c = peg_cfun_init(argc, argv, 1);
+    JanetBuffer *ret = janet_buffer(0);
+    int32_t trail = 0;
+    for (int32_t i = c.start; i < c.bytes.len;) {
+        peg_call_reset(&c);
+        const uint8_t *result = peg_rule(&c.s, c.s.bytecode, c.bytes.bytes + i);
+        if (NULL != result) {
+            if (trail < i) {
+                janet_buffer_push_bytes(ret, c.bytes.bytes + trail, (i - trail));
+                trail = i;
+            }
+            int32_t nexti = (int32_t)(result - c.bytes.bytes);
+            janet_buffer_push_bytes(ret, c.repl.bytes, c.repl.len);
+            trail = nexti;
+            if (nexti == i) nexti++;
+            i = nexti;
+            if (only_one) break;
+        } else {
+            i++;
+        }
+    }
+    if (trail < c.bytes.len) {
+        janet_buffer_push_bytes(ret, c.bytes.bytes + trail, (c.bytes.len - trail));
+    }
+    return janet_wrap_buffer(ret);
+}
+
+JANET_CORE_FN(cfun_peg_replace_all,
+              "(peg/replace-all peg repl text &opt start & args)",
+              "Replace all matches of peg in text with repl, returning a new buffer. The peg does not need to make captures to do replacement.") {
+    return cfun_peg_replace_generic(argc, argv, 0);
+}
+
+JANET_CORE_FN(cfun_peg_replace,
+              "(peg/replace peg repl text &opt start & args)",
+              "Replace first match of peg in text with repl, returning a new buffer. The peg does not need to make captures to do replacement. "
+              "If no matches are found, returns the input string in a new buffer.") {
+    return cfun_peg_replace_generic(argc, argv, 1);
+}
+
+static JanetMethod peg_methods[] = {
+    {"match", cfun_peg_match},
+    {"find", cfun_peg_find},
+    {"find-all", cfun_peg_find_all},
+    {"replace", cfun_peg_replace},
+    {"replace-all", cfun_peg_replace_all},
+    {NULL, NULL}
+};
+
 static int cfun_peg_getter(JanetAbstract a, Janet key, Janet *out) {
     (void) a;
-    if (janet_keyeq(key, "match")) {
-        *out = janet_wrap_cfunction(cfun_peg_match);
-        return 1;
-    }
-    return 0;
+    if (!janet_checktype(key, JANET_KEYWORD))
+        return 0;
+    return janet_getmethod(janet_unwrap_keyword(key), peg_methods, out);
 }
 
-static const JanetReg peg_cfuns[] = {
-    {
-        "peg/compile", cfun_peg_compile,
-        JDOC("(peg/compile peg)\n\n"
-             "Compiles a peg source data structure into a <core/peg>. This will speed up matching "
-             "if the same peg will be used multiple times.")
-    },
-    {
-        "peg/match", cfun_peg_match,
-        JDOC("(peg/match peg text &opt start & args)\n\n"
-             "Match a Parsing Expression Grammar to a byte string and return an array of captured values. "
-             "Returns nil if text does not match the language defined by peg. The syntax of PEGs is documented on the Janet website.")
-    },
-    {NULL, NULL, NULL}
-};
+static Janet peg_next(void *p, Janet key) {
+    (void) p;
+    return janet_nextmethod(peg_methods, key);
+}
 
 /* Load the peg module */
 void janet_lib_peg(JanetTable *env) {
-    janet_core_cfuns(env, NULL, peg_cfuns);
+    JanetRegExt cfuns[] = {
+        JANET_CORE_REG("peg/compile", cfun_peg_compile),
+        JANET_CORE_REG("peg/match", cfun_peg_match),
+        JANET_CORE_REG("peg/find", cfun_peg_find),
+        JANET_CORE_REG("peg/find-all", cfun_peg_find_all),
+        JANET_CORE_REG("peg/replace", cfun_peg_replace),
+        JANET_CORE_REG("peg/replace-all", cfun_peg_replace_all),
+        JANET_REG_END
+    };
+    janet_core_cfuns_ext(env, NULL, cfuns);
     janet_register_abstract_type(&janet_peg_type);
 }
 

src/core/pp.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -39,12 +39,17 @@
 
 static void number_to_string_b(JanetBuffer *buffer, double x) {
     janet_buffer_ensure(buffer, buffer->count + BUFSIZE, 2);
-    /* Use int32_t range for valid integers because that is the
-     * range most integer-expecting functions in the C api use. */
     const char *fmt = (x == floor(x) &&
-                       x <= ((double) INT32_MAX) &&
-                       x >= ((double) INT32_MIN)) ? "%.0f" : "%g";
-    int count = snprintf((char *) buffer->data + buffer->count, BUFSIZE, fmt, 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;
 }
 
@@ -123,9 +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) {
@@ -191,7 +193,7 @@ static void janet_escape_buffer_b(JanetBuffer *buffer, JanetBuffer *bx) {
 void janet_to_string_b(JanetBuffer *buffer, Janet x) {
     switch (janet_type(x)) {
         case JANET_NIL:
-            janet_buffer_push_cstring(buffer, "nil");
+            janet_buffer_push_cstring(buffer, "");
             break;
         case JANET_BOOLEAN:
             janet_buffer_push_cstring(buffer,
@@ -225,12 +227,14 @@ void janet_to_string_b(JanetBuffer *buffer, Janet x) {
         }
         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;
             }
@@ -257,21 +261,13 @@ void janet_to_string_b(JanetBuffer *buffer, Janet x) {
 
 /* See parse.c for full table */
 
-static const uint32_t pp_symchars[8] = {
-    0x00000000, 0xf7ffec72, 0xc7ffffff, 0x07fffffe,
-    0x00000000, 0x00000000, 0x00000000, 0x00000000
-};
-
-static int pp_is_symbol_char(uint8_t c) {
-    return pp_symchars[c >> 5] & ((uint32_t)1 << (c & 0x1F));
-}
-
 /* 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 (!pp_is_symbol_char(sym[i])) return 1;
+        if (!janet_is_symbol_char(sym[i])) return 1;
     }
     return 0;
 }
@@ -280,6 +276,9 @@ void janet_description_b(JanetBuffer *buffer, Janet x) {
     switch (janet_type(x)) {
         default:
             break;
+        case JANET_NIL:
+            janet_buffer_push_cstring(buffer, "nil");
+            return;
         case JANET_KEYWORD:
             janet_buffer_push_u8(buffer, ':');
             break;
@@ -346,6 +345,9 @@ struct pretty {
     int indent;
     int flags;
     int32_t bufstartlen;
+    int32_t *keysort_buffer;
+    int32_t keysort_capacity;
+    int32_t keysort_start;
     JanetTable seen;
 };
 
@@ -354,12 +356,16 @@ 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_NUMBER:
         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;
@@ -452,7 +458,7 @@ static const char *janet_pretty_colors[] = {
     "\x1B[36m",
     "\x1B[36m",
     "\x1B[36m",
-    "\x1B[36m"
+    "\x1B[36m",
     "\x1B[35m",
     "\x1B[36m",
     "\x1B[36m",
@@ -556,14 +562,31 @@ 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_ckeywordv("name"));
+                    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)) {
@@ -576,8 +599,8 @@ static void janet_pretty_one(struct pretty *S, Janet x, int is_dict_value) {
                         }
                     }
                 }
-                janet_buffer_push_cstring(S->buffer, "{");
             }
+            janet_buffer_push_cstring(S->buffer, "{");
 
             S->depth--;
             S->indent += 2;
@@ -585,31 +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;
-                int counter = 0;
                 janet_dictionary_view(x, &kvs, &len, &cap);
                 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 (counter == JANET_PRETTY_DICT_LIMIT && !(S->flags & JANET_PRETTY_NOTRUNC)) {
-                            print_newline(S, 0);
-                            janet_buffer_push_cstring(S->buffer, "...");
-                            break;
-                        }
-                        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);
-                        counter++;
+                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++;
@@ -632,6 +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);
@@ -654,6 +704,9 @@ static JanetBuffer *janet_jdn_(JanetBuffer *buffer, int depth, Janet x, int32_t
     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);
@@ -813,7 +866,7 @@ void janet_formatbv(JanetBuffer *b, const char *format, va_list args) {
                 case 'P':
                 case 'p': { /* janet pretty , precision = depth */
                     int depth = atoi(precision);
-                    if (depth < 1) depth = 4;
+                    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');
@@ -839,7 +892,7 @@ void janet_formatbv(JanetBuffer *b, const char *format, va_list args) {
                 }
             }
             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);
         }
@@ -953,6 +1006,9 @@ 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':
@@ -962,7 +1018,7 @@ void janet_buffer_format(
                 case 'P':
                 case 'p': { /* janet pretty , precision = depth */
                     int depth = atoi(precision);
-                    if (depth < 1) depth = 4;
+                    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');
@@ -988,9 +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) 2020 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
@@ -36,7 +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 */
@@ -70,7 +70,7 @@ void janetc_regalloc_clone(JanetcRegisterAllocator *dest, JanetcRegisterAllocato
     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;
         }
@@ -87,7 +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, (size_t) newcapacity * sizeof(uint32_t));
+        ra->chunks = janet_realloc(ra->chunks, (size_t) newcapacity * sizeof(uint32_t));
         if (!ra->chunks) {
             JANET_OUT_OF_MEMORY;
         }

src/core/regalloc.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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

src/core/run.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -23,7 +23,6 @@
 #ifndef JANET_AMALG
 #include "features.h"
 #include <janet.h>
-#include "state.h"
 #endif
 
 /* Run a string */
@@ -56,9 +55,10 @@ int janet_dobytes(JanetTable *env, const uint8_t *bytes, int32_t len, const char
                     done = 1;
                 }
             } else {
+                ret = janet_wrap_string(cres.error);
                 if (cres.macrofiber) {
                     janet_eprintf("compile error in %s: ", sourcePath);
-                    janet_stacktrace(cres.macrofiber, janet_wrap_string(cres.error));
+                    janet_stacktrace(cres.macrofiber, ret);
                 } else {
                     janet_eprintf("compile error in %s: %s\n", sourcePath,
                                   (const char *)cres.error);
@@ -68,25 +68,25 @@ int janet_dobytes(JanetTable *env, const uint8_t *bytes, int32_t len, const char
             }
         }
 
+        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;
-                janet_eprintf("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 {
@@ -110,3 +110,19 @@ 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(fiber, out);
+    }
+#endif
+    return status;
+}

src/core/specials.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -251,6 +251,9 @@ 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;
@@ -336,10 +339,8 @@ static int defleaf(
 
         /* 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);
     }
+    return namelocal(c, sym, 0, s);
 }
 
 static JanetSlot janetc_def(JanetFopts opts, int32_t argn, const Janet *argv) {
@@ -409,7 +410,9 @@ 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;
     }
@@ -470,6 +473,28 @@ 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;
@@ -649,6 +674,7 @@ static JanetSlot janetc_while(JanetFopts opts, int32_t argn, const Janet *argv)
         /* 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);
@@ -823,6 +849,7 @@ 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. */
@@ -852,6 +879,7 @@ 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) 2020 Calvin Rose and contributors
+* 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
@@ -20,21 +20,42 @@
 * IN THE SOFTWARE.
 */
 
-/* A very simple native module */
-
+#ifndef JANET_AMALG
+#include "features.h"
 #include <janet.h>
+#include "state.h"
+#endif
 
-static Janet cfun_get_five(int32_t argc, Janet *argv) {
-    (void) argv;
-    janet_fixarity(argc, 0);
-    return janet_wrap_number(5.0);
+JANET_THREAD_LOCAL JanetVM janet_vm;
+
+JanetVM *janet_local_vm(void) {
+    return &janet_vm;
 }
 
-static const JanetReg array_cfuns[] = {
-    {"get5", cfun_get_five, NULL},
-    {NULL, NULL, NULL}
-};
-
-JANET_MODULE_ENTRY(JanetTable *env) {
-    janet_cfuns(env, NULL, array_cfuns);
+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) 2020 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
@@ -25,76 +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;
 
-typedef struct JanetScratch JanetScratch;
+typedef struct JanetScratch {
+    JanetScratchFinalizer finalize;
+    long long mem[]; /* for proper alignment */
+} JanetScratch;
 
-/* Cache the core environment */
-extern JANET_THREAD_LOCAL JanetTable *janet_vm_core_env;
-
-/* How many VM stacks have been entered */
-extern JANET_THREAD_LOCAL int janet_vm_stackn;
-
-/* The current running fiber on the current thread.
- * Set and unset by janet_run. */
-extern JANET_THREAD_LOCAL JanetFiber *janet_vm_fiber;
-extern JANET_THREAD_LOCAL JanetFiber *janet_vm_root_fiber;
-
-/* 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;
-
-/* 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;
-
-/* Registry for abstract abstract types that can be marshalled.
- * We need this to look up the constructors when unmarshalling. */
-extern JANET_THREAD_LOCAL JanetTable *janet_vm_abstract_registry;
-
-/* 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;
-
-/* Garbage collection */
-extern JANET_THREAD_LOCAL void *janet_vm_blocks;
-extern JANET_THREAD_LOCAL size_t janet_vm_gc_interval;
-extern JANET_THREAD_LOCAL size_t janet_vm_next_collection;
-extern JANET_THREAD_LOCAL int janet_vm_gc_suspend;
-
-/* GC roots */
-extern JANET_THREAD_LOCAL Janet *janet_vm_roots;
-extern JANET_THREAD_LOCAL size_t janet_vm_root_count;
-extern JANET_THREAD_LOCAL size_t janet_vm_root_capacity;
-
-/* Scratch memory */
-extern JANET_THREAD_LOCAL JanetScratch **janet_scratch_mem;
-extern JANET_THREAD_LOCAL size_t janet_scratch_cap;
-extern JANET_THREAD_LOCAL size_t janet_scratch_len;
-
-/* Recursionless traversal of data structures */
 typedef struct {
     JanetGCObject *self;
     JanetGCObject *other;
     int32_t index;
     int32_t index2;
 } JanetTraversalNode;
-extern JANET_THREAD_LOCAL JanetTraversalNode *janet_vm_traversal;
-extern JANET_THREAD_LOCAL JanetTraversalNode *janet_vm_traversal_top;
-extern JANET_THREAD_LOCAL JanetTraversalNode *janet_vm_traversal_base;
 
-/* Setup / teardown */
-#ifdef JANET_THREADS
-void janet_threads_init(void);
-void janet_threads_deinit(void);
+typedef struct {
+    int32_t capacity;
+    int32_t head;
+    int32_t tail;
+    void *data;
+} JanetQueue;
+
+typedef struct {
+    JanetTimestamp when;
+    JanetFiber *fiber;
+    JanetFiber *curr_fiber;
+    uint32_t sched_id;
+    int is_error;
+} JanetTimeout;
+
+/* 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;
+
+struct JanetVM {
+    /* Place for user data */
+    void *user;
+
+    /* 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) 2020 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
@@ -62,7 +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;
 }
@@ -108,7 +108,7 @@ static void kmp_init(
     if (patlen == 0) {
         janet_panic("expected non-empty pattern");
     }
-    int32_t *lookup = calloc(patlen, sizeof(int32_t));
+    int32_t *lookup = janet_calloc(patlen, sizeof(int32_t));
     if (!lookup) {
         JANET_OUT_OF_MEMORY;
     }
@@ -131,7 +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) {
@@ -170,13 +170,37 @@ static int32_t kmp_next(struct kmp_state *state) {
 
 /* CFuns */
 
-static Janet cfun_string_slice(int32_t argc, Janet *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);
@@ -192,7 +216,9 @@ static Janet cfun_string_repeat(int32_t argc, Janet *argv) {
     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);
@@ -203,7 +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++) {
@@ -213,7 +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);
@@ -228,7 +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);
@@ -243,7 +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);
@@ -267,7 +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);
@@ -278,7 +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);
@@ -287,7 +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);
@@ -298,7 +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);
@@ -332,7 +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;
@@ -352,7 +407,11 @@ static Janet cfun_string_replace(int32_t argc, Janet *argv) {
     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;
@@ -372,7 +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;
@@ -386,6 +451,7 @@ static Janet cfun_string_split(int32_t argc, Janet *argv) {
         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));
@@ -393,7 +459,11 @@ static Janet cfun_string_split(int32_t argc, Janet *argv) {
     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_fixarity(argc, 2);
     JanetByteView set = janet_getbytes(argv, 0);
@@ -415,7 +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;
@@ -455,7 +528,10 @@ static Janet cfun_string_join(int32_t argc, Janet *argv) {
     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);
@@ -495,7 +571,10 @@ 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);
@@ -505,153 +584,52 @@ static Janet cfun_string_trim(int32_t argc, Janet *argv) {
     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 &opt start end)\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. Note that index -1 is synonymous with "
-             "index (length bytes) to allow a full negative slice range. ")
-    },
-    {
-        "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 parameters 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-all 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 &opt start limit)\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. Will start searching "
-             "for delim at the index start (if provided), and return up to a maximum "
-             "of limit results (if provided).")
-    },
-    {
-        "string/check-set", cfun_string_checkset,
-        JDOC("(string/check-set set str)\n\n"
-             "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.")
-    },
-    {
-        "string/join", cfun_string_join,
-        JDOC("(string/join parts &opt 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 values. Returns "
-             "a new string.")
-    },
-    {
-        "string/trim", cfun_string_trim,
-        JDOC("(string/trim str &opt 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 &opt 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 &opt 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) 2020 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
@@ -87,7 +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, (size_t) newcap * sizeof(uint32_t));
+        uint32_t *mem = janet_realloc(mant->digits, (size_t) newcap * sizeof(uint32_t));
         if (NULL == mem) {
             JANET_OUT_OF_MEMORY;
         }
@@ -246,15 +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;
@@ -278,21 +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 */
@@ -368,14 +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(
@@ -447,7 +461,7 @@ 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 <= (UINT64_MAX / 2)) {
+        if (neg && bi <= ((UINT64_MAX / 2) + 1)) {
             if (bi > INT64_MAX) {
                 *out = INT64_MIN;
             } else {

src/core/struct.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -39,13 +39,14 @@ JanetKV *janet_struct_begin(int32_t count) {
     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);
@@ -68,7 +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);
@@ -123,13 +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 - replace old value */
-                kv->value = value;
+                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)) {
@@ -143,16 +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 */
@@ -167,3 +201,107 @@ JanetTable *janet_struct_to_table(const JanetKV *st) {
     }
     return table;
 }
+
+/* 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]);
+    }
+    janet_struct_proto(st) = proto;
+    return janet_wrap_struct(janet_struct_end(st));
+}
+
+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) 2020 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
@@ -36,30 +36,26 @@
 
 #include <string.h>
 
-/* 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;
-
 /* Initialize the cache (allocate cache memory) */
 void janet_symcache_init() {
-    janet_vm_cache_capacity = 1024;
-    janet_vm_cache = calloc(1, (size_t) 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. */
@@ -79,24 +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)) {
@@ -104,10 +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:
@@ -121,15 +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, (size_t) 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;
@@ -145,18 +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;
 }
 
@@ -165,8 +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;
     }
 }
@@ -194,22 +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;
         }
     }
@@ -227,19 +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) 2020 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

src/core/table.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -67,14 +67,23 @@ static JanetTable *janet_table_init_impl(JanetTable *table, int32_t capacity, in
     return table;
 }
 
-/* Initialize a 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) {
-    janet_sfree(table->data);
+    if (table->gc.flags & JANET_TABLE_FLAG_STACK) {
+        janet_sfree(table->data);
+    } else {
+        janet_free(table->data);
+    }
 }
 
 /* Create a new table */
@@ -117,43 +126,27 @@ static void janet_table_rehash(JanetTable *t, int32_t size) {
     if (islocal) {
         janet_sfree(olddata);
     } else {
-        free(olddata);
+        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) {
-    JanetKV *bucket = janet_table_find(t, key);
-    if (NULL != bucket && !janet_checktype(bucket->key, JANET_NIL)) {
-        *which = t;
-        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)) {
-                *which = t;
-                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)) {
+            *which = t;
+            return bucket->value;
         }
     }
     return janet_wrap_nil();
@@ -173,7 +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();
@@ -208,6 +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;
@@ -217,19 +227,6 @@ void janet_table_clear(JanetTable *t) {
     t->deleted = 0;
 }
 
-/* Convert table to struct */
-const JanetKV *janet_table_to_struct(JanetTable *t) {
-    JanetKV *st = janet_struct_begin(t->count);
-    JanetKV *kv = t->data;
-    JanetKV *end = t->data + t->capacity;
-    while (kv < end) {
-        if (!janet_checktype(kv->key, JANET_NIL))
-            janet_struct_put(st, kv->key, kv->value);
-        kv++;
-    }
-    return janet_struct_end(st);
-}
-
 /* Clone a table. */
 JanetTable *janet_table_clone(JanetTable *table) {
     JanetTable *newTable = janet_gcalloc(JANET_MEMORY_TABLE, sizeof(JanetTable));
@@ -237,7 +234,7 @@ JanetTable *janet_table_clone(JanetTable *table) {
     newTable->capacity = table->capacity;
     newTable->deleted = table->deleted;
     newTable->proto = table->proto;
-    newTable->data = malloc(newTable->capacity * sizeof(JanetKV));
+    newTable->data = janet_malloc(newTable->capacity * sizeof(JanetKV));
     if (NULL == newTable->data) {
         JANET_OUT_OF_MEMORY;
     }
@@ -256,7 +253,7 @@ static void janet_table_mergekv(JanetTable *table, const JanetKV *kvs, int32_t c
     }
 }
 
-/* Merge a table other into another table */
+/* Merge a table into another table */
 void janet_table_merge_table(JanetTable *table, JanetTable *other) {
     janet_table_mergekv(table, other->data, other->capacity);
 }
@@ -266,15 +263,51 @@ 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);
+    JanetKV *kv = t->data;
+    JanetKV *end = t->data + t->capacity;
+    while (kv < end) {
+        if (!janet_checktype(kv->key, JANET_NIL))
+            janet_struct_put(st, kv->key, kv->value);
+        kv++;
+    }
+    return janet_struct_end(st);
+}
+
+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;
+    }
+    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
@@ -282,7 +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;
@@ -293,67 +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 Janet cfun_table_clone(int32_t argc, Janet *argv) {
+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));
 }
 
-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.")
-    },
-    {
-        "table/clone", cfun_table_clone,
-        JDOC("(table/clone tab)\n\n"
-             "Create a copy of a table. Updates to the new table will not change the old table, "
-             "and vice versa.")
-    },
-    {NULL, NULL, NULL}
-};
+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/thread.c

@@ -1,731 +0,0 @@
-/*
-* Copyright (c) 2020 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
-* 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 "gc.h"
-#include "util.h"
-#include "state.h"
-#endif
-
-#ifdef JANET_THREADS
-
-#include <math.h>
-#ifdef JANET_WINDOWS
-#include <windows.h>
-#else
-#include <setjmp.h>
-#include <time.h>
-#include <pthread.h>
-#endif
-
-/* typedefed in janet.h */
-struct JanetMailbox {
-
-    /* Synchronization */
-#ifdef JANET_WINDOWS
-    CRITICAL_SECTION lock;
-    CONDITION_VARIABLE cond;
-#else
-    pthread_mutex_t lock;
-    pthread_cond_t cond;
-#endif
-
-    /* Memory management - reference counting */
-    int refCount;
-    int closed;
-
-    /* Store messages */
-    uint16_t messageCapacity;
-    uint16_t messageCount;
-    uint16_t messageFirst;
-    uint16_t messageNext;
-
-    /* Buffers to store messages. These buffers are manually allocated, so
-     * are not owned by any thread's GC. */
-    JanetBuffer messages[];
-};
-
-#define JANET_THREAD_HEAVYWEIGHT 0x1
-#define JANET_THREAD_ABSTRACTS 0x2
-#define JANET_THREAD_CFUNCTIONS 0x4
-static const char janet_thread_flags[] = "hac";
-
-typedef struct {
-    JanetMailbox *original;
-    JanetMailbox *newbox;
-    uint64_t flags;
-} JanetMailboxPair;
-
-static JANET_THREAD_LOCAL JanetMailbox *janet_vm_mailbox = NULL;
-static JANET_THREAD_LOCAL JanetThread *janet_vm_thread_current = NULL;
-static JANET_THREAD_LOCAL JanetTable *janet_vm_thread_decode = NULL;
-
-static JanetTable *janet_thread_get_decode(void) {
-    if (janet_vm_thread_decode == NULL) {
-        janet_vm_thread_decode = janet_get_core_table("load-image-dict");
-        janet_gcroot(janet_wrap_table(janet_vm_thread_decode));
-    }
-    return janet_vm_thread_decode;
-}
-
-static JanetMailbox *janet_mailbox_create(int refCount, uint16_t capacity) {
-    JanetMailbox *mailbox = malloc(sizeof(JanetMailbox) + sizeof(JanetBuffer) * (size_t) capacity);
-    if (NULL == mailbox) {
-        JANET_OUT_OF_MEMORY;
-    }
-#ifdef JANET_WINDOWS
-    InitializeCriticalSection(&mailbox->lock);
-    InitializeConditionVariable(&mailbox->cond);
-#else
-    pthread_mutex_init(&mailbox->lock, NULL);
-    pthread_cond_init(&mailbox->cond, NULL);
-#endif
-    mailbox->refCount = refCount;
-    mailbox->closed = 0;
-    mailbox->messageCount = 0;
-    mailbox->messageCapacity = capacity;
-    mailbox->messageFirst = 0;
-    mailbox->messageNext = 0;
-    for (uint16_t i = 0; i < capacity; i++) {
-        janet_buffer_init(mailbox->messages + i, 0);
-    }
-    return mailbox;
-}
-
-static void janet_mailbox_destroy(JanetMailbox *mailbox) {
-#ifdef JANET_WINDOWS
-    DeleteCriticalSection(&mailbox->lock);
-#else
-    pthread_mutex_destroy(&mailbox->lock);
-    pthread_cond_destroy(&mailbox->cond);
-#endif
-    for (uint16_t i = 0; i < mailbox->messageCapacity; i++) {
-        janet_buffer_deinit(mailbox->messages + i);
-    }
-    free(mailbox);
-}
-
-static void janet_mailbox_lock(JanetMailbox *mailbox) {
-#ifdef JANET_WINDOWS
-    EnterCriticalSection(&mailbox->lock);
-#else
-    pthread_mutex_lock(&mailbox->lock);
-#endif
-}
-
-static void janet_mailbox_unlock(JanetMailbox *mailbox) {
-#ifdef JANET_WINDOWS
-    LeaveCriticalSection(&mailbox->lock);
-#else
-    pthread_mutex_unlock(&mailbox->lock);
-#endif
-}
-
-/* Assumes you have the mailbox lock already */
-static void janet_mailbox_ref_with_lock(JanetMailbox *mailbox, int delta) {
-    mailbox->refCount += delta;
-    if (mailbox->refCount <= 0) {
-        janet_mailbox_unlock(mailbox);
-        janet_mailbox_destroy(mailbox);
-    } else {
-        janet_mailbox_unlock(mailbox);
-    }
-}
-
-static void janet_mailbox_ref(JanetMailbox *mailbox, int delta) {
-    janet_mailbox_lock(mailbox);
-    janet_mailbox_ref_with_lock(mailbox, delta);
-}
-
-static void janet_close_thread(JanetThread *thread) {
-    if (thread->mailbox) {
-        janet_mailbox_ref(thread->mailbox, -1);
-        thread->mailbox = NULL;
-    }
-}
-
-static int thread_gc(void *p, size_t size) {
-    (void) size;
-    JanetThread *thread = (JanetThread *)p;
-    janet_close_thread(thread);
-    return 0;
-}
-
-static int thread_mark(void *p, size_t size) {
-    (void) size;
-    JanetThread *thread = (JanetThread *)p;
-    if (thread->encode) {
-        janet_mark(janet_wrap_table(thread->encode));
-    }
-    return 0;
-}
-
-static JanetMailboxPair *make_mailbox_pair(JanetMailbox *original, uint64_t flags) {
-    JanetMailboxPair *pair = malloc(sizeof(JanetMailboxPair));
-    if (NULL == pair) {
-        JANET_OUT_OF_MEMORY;
-    }
-    pair->original = original;
-    janet_mailbox_ref(original, 1);
-    pair->newbox = janet_mailbox_create(1, 16);
-    pair->flags = flags;
-    return pair;
-}
-
-static void destroy_mailbox_pair(JanetMailboxPair *pair) {
-    janet_mailbox_ref(pair->original, -1);
-    janet_mailbox_ref(pair->newbox, -1);
-    free(pair);
-}
-
-/* Abstract waiting for timeout across windows/posix */
-typedef struct {
-    int timedwait;
-    int nowait;
-#ifdef JANET_WINDOWS
-    DWORD interval;
-    DWORD ticksLeft;
-#else
-    struct timespec ts;
-#endif
-} JanetWaiter;
-
-static void janet_waiter_init(JanetWaiter *waiter, double sec) {
-    waiter->timedwait = 0;
-    waiter->nowait = 0;
-
-    if (sec <= 0.0 || isnan(sec)) {
-        waiter->nowait = 1;
-        return;
-    }
-    waiter->timedwait = sec > 0.0 && !isinf(sec);
-
-    /* Set maximum wait time to 30 days */
-    if (sec > (60.0 * 60.0 * 24.0 * 30.0)) {
-        sec = 60.0 * 60.0 * 24.0 * 30.0;
-    }
-
-#ifdef JANET_WINDOWS
-    if (waiter->timedwait) {
-        waiter->ticksLeft = waiter->interval = (DWORD) floor(1000.0 * sec);
-    }
-#else
-    if (waiter->timedwait) {
-        /* N seconds -> timespec of (now + sec) */
-        struct timespec now;
-        clock_gettime(CLOCK_REALTIME, &now);
-        time_t tvsec = (time_t) floor(sec);
-        long tvnsec = (long) floor(1000000000.0 * (sec - ((double) tvsec)));
-        tvsec += now.tv_sec;
-        tvnsec += now.tv_nsec;
-        if (tvnsec >= 1000000000L) {
-            tvnsec -= 1000000000L;
-            tvsec += 1;
-        }
-        waiter->ts.tv_sec = tvsec;
-        waiter->ts.tv_nsec = tvnsec;
-    }
-#endif
-}
-
-static int janet_waiter_wait(JanetWaiter *wait, JanetMailbox *mailbox) {
-    if (wait->nowait) return 1;
-#ifdef JANET_WINDOWS
-    if (wait->timedwait) {
-        if (wait->ticksLeft == 0) return 1;
-        DWORD startTime = GetTickCount();
-        int status = !SleepConditionVariableCS(&mailbox->cond, &mailbox->lock, wait->ticksLeft);
-        DWORD dTick = GetTickCount() - startTime;
-        /* Be careful about underflow */
-        wait->ticksLeft = dTick > wait->ticksLeft ? 0 : dTick;
-        return status;
-    } else {
-        SleepConditionVariableCS(&mailbox->cond, &mailbox->lock, INFINITE);
-        return 0;
-    }
-#else
-    if (wait->timedwait) {
-        return pthread_cond_timedwait(&mailbox->cond, &mailbox->lock, &wait->ts);
-    } else {
-        pthread_cond_wait(&mailbox->cond, &mailbox->lock);
-        return 0;
-    }
-#endif
-}
-
-static void janet_mailbox_wakeup(JanetMailbox *mailbox) {
-#ifdef JANET_WINDOWS
-    WakeConditionVariable(&mailbox->cond);
-#else
-    pthread_cond_signal(&mailbox->cond);
-#endif
-}
-
-static int mailbox_at_capacity(JanetMailbox *mailbox) {
-    return mailbox->messageCount >= mailbox->messageCapacity;
-}
-
-/* Returns 1 if could not send (encode error or timeout), 2 for mailbox closed, and
- * 0 otherwise. Will not panic.  */
-int janet_thread_send(JanetThread *thread, Janet msg, double timeout) {
-
-    /* Ensure mailbox is not closed. */
-    JanetMailbox *mailbox = thread->mailbox;
-    if (NULL == mailbox) return 2;
-    janet_mailbox_lock(mailbox);
-    if (mailbox->closed) {
-        janet_mailbox_ref_with_lock(mailbox, -1);
-        thread->mailbox = NULL;
-        return 2;
-    }
-
-    /* Back pressure */
-    if (mailbox_at_capacity(mailbox)) {
-        JanetWaiter wait;
-        janet_waiter_init(&wait, timeout);
-
-        if (wait.nowait) {
-            janet_mailbox_unlock(mailbox);
-            return 1;
-        }
-
-        /* Retry loop, as there can be multiple writers */
-        while (mailbox_at_capacity(mailbox)) {
-            if (janet_waiter_wait(&wait, mailbox)) {
-                janet_mailbox_unlock(mailbox);
-                janet_mailbox_wakeup(mailbox);
-                return 1;
-            }
-        }
-    }
-
-    /* Hack to capture all panics from marshalling. This works because
-     * we know janet_marshal won't mess with other essential global state. */
-    jmp_buf buf;
-    jmp_buf *old_buf = janet_vm_jmp_buf;
-    janet_vm_jmp_buf = &buf;
-    int32_t oldmcount = mailbox->messageCount;
-
-    int ret = 0;
-    if (setjmp(buf)) {
-        ret = 1;
-        mailbox->messageCount = oldmcount;
-    } else {
-        JanetBuffer *msgbuf = mailbox->messages + mailbox->messageNext;
-        msgbuf->count = 0;
-
-        /* Start panic zone */
-        janet_marshal(msgbuf, msg, thread->encode, JANET_MARSHAL_UNSAFE);
-        /* End panic zone */
-
-        mailbox->messageNext = (mailbox->messageNext + 1) % mailbox->messageCapacity;
-        mailbox->messageCount++;
-    }
-
-    /* Cleanup */
-    janet_vm_jmp_buf = old_buf;
-    janet_mailbox_unlock(mailbox);
-
-    /* Potentially wake up a blocked thread */
-    janet_mailbox_wakeup(mailbox);
-
-    return ret;
-}
-
-/* Returns 0 on successful message. Returns 1 if timedout */
-int janet_thread_receive(Janet *msg_out, double timeout) {
-    JanetMailbox *mailbox = janet_vm_mailbox;
-    janet_mailbox_lock(mailbox);
-
-    /* For timeouts */
-    JanetWaiter wait;
-    janet_waiter_init(&wait, timeout);
-
-    for (;;) {
-
-        /* Check for messages waiting for us */
-        if (mailbox->messageCount > 0) {
-
-            /* Hack to capture all panics from marshalling. This works because
-             * we know janet_marshal won't mess with other essential global state. */
-            jmp_buf buf;
-            jmp_buf *old_buf = janet_vm_jmp_buf;
-            janet_vm_jmp_buf = &buf;
-
-            /* Handle errors */
-            if (setjmp(buf)) {
-                /* Cleanup jmp_buf, keep lock */
-                janet_vm_jmp_buf = old_buf;
-            } else {
-                JanetBuffer *msgbuf = mailbox->messages + mailbox->messageFirst;
-                mailbox->messageCount--;
-                mailbox->messageFirst = (mailbox->messageFirst + 1) % mailbox->messageCapacity;
-
-                /* Read from beginning of channel */
-                const uint8_t *nextItem = NULL;
-                Janet item = janet_unmarshal(
-                                 msgbuf->data, msgbuf->count,
-                                 JANET_MARSHAL_UNSAFE, janet_thread_get_decode(), &nextItem);
-                *msg_out = item;
-
-                /* Cleanup */
-                janet_vm_jmp_buf = old_buf;
-                janet_mailbox_unlock(mailbox);
-
-                /* Potentially wake up pending threads */
-                janet_mailbox_wakeup(mailbox);
-
-                return 0;
-            }
-        }
-
-        if (wait.nowait) {
-            janet_mailbox_unlock(mailbox);
-            return 1;
-        }
-
-        /* Wait for next message */
-        if (janet_waiter_wait(&wait, mailbox)) {
-            janet_mailbox_unlock(mailbox);
-            return 1;
-        }
-    }
-
-}
-
-static int janet_thread_getter(void *p, Janet key, Janet *out);
-
-const JanetAbstractType janet_thread_type = {
-    "core/thread",
-    thread_gc,
-    thread_mark,
-    janet_thread_getter,
-    JANET_ATEND_GET
-};
-
-static JanetThread *janet_make_thread(JanetMailbox *mailbox, JanetTable *encode) {
-    JanetThread *thread = janet_abstract(&janet_thread_type, sizeof(JanetThread));
-    janet_mailbox_ref(mailbox, 1);
-    thread->mailbox = mailbox;
-    thread->encode = encode;
-    return thread;
-}
-
-JanetThread *janet_getthread(const Janet *argv, int32_t n) {
-    return (JanetThread *) janet_getabstract(argv, n, &janet_thread_type);
-}
-
-/* Runs in new thread */
-static int thread_worker(JanetMailboxPair *pair) {
-    JanetFiber *fiber = NULL;
-    Janet out;
-
-    /* Use the mailbox we were given */
-    janet_vm_mailbox = pair->newbox;
-    janet_mailbox_ref(pair->newbox, 1);
-
-    /* Init VM */
-    janet_init();
-
-    /* Get dictionaries for default encode/decode */
-    JanetTable *encode;
-    if (pair->flags & JANET_THREAD_HEAVYWEIGHT) {
-        encode = janet_get_core_table("make-image-dict");
-    } else {
-        encode = NULL;
-        janet_vm_thread_decode = janet_table(0);
-        janet_gcroot(janet_wrap_table(janet_vm_thread_decode));
-    }
-
-    /* Create parent thread */
-    JanetThread *parent = janet_make_thread(pair->original, encode);
-    Janet parentv = janet_wrap_abstract(parent);
-
-    /* Unmarshal the abstract registry */
-    if (pair->flags & JANET_THREAD_ABSTRACTS) {
-        Janet reg;
-        int status = janet_thread_receive(&reg, INFINITY);
-        if (status) goto error;
-        if (!janet_checktype(reg, JANET_TABLE)) goto error;
-        janet_gcunroot(janet_wrap_table(janet_vm_abstract_registry));
-        janet_vm_abstract_registry = janet_unwrap_table(reg);
-        janet_gcroot(janet_wrap_table(janet_vm_abstract_registry));
-    }
-
-    /* Unmarshal the normal registry */
-    if (pair->flags & JANET_THREAD_CFUNCTIONS) {
-        Janet reg;
-        int status = janet_thread_receive(&reg, INFINITY);
-        if (status) goto error;
-        if (!janet_checktype(reg, JANET_TABLE)) goto error;
-        janet_gcunroot(janet_wrap_table(janet_vm_registry));
-        janet_vm_registry = janet_unwrap_table(reg);
-        janet_gcroot(janet_wrap_table(janet_vm_registry));
-    }
-
-    /* Unmarshal the function */
-    Janet funcv;
-    int status = janet_thread_receive(&funcv, INFINITY);
-    if (status) goto error;
-    if (!janet_checktype(funcv, JANET_FUNCTION)) goto error;
-    JanetFunction *func = janet_unwrap_function(funcv);
-
-    /* Arity check */
-    if (func->def->min_arity > 1 || func->def->max_arity < 1) {
-        goto error;
-    }
-
-    /* Call function */
-    Janet argv[1] = { parentv };
-    fiber = janet_fiber(func, 64, 1, argv);
-    JanetSignal sig = janet_continue(fiber, janet_wrap_nil(), &out);
-    if (sig != JANET_SIGNAL_OK && sig < JANET_SIGNAL_USER0) {
-        janet_eprintf("in thread %v: ", janet_wrap_abstract(janet_make_thread(pair->newbox, encode)));
-        janet_stacktrace(fiber, out);
-    }
-
-#ifdef JANET_NET
-    janet_loop();
-#endif
-
-    /* Normal exit */
-    destroy_mailbox_pair(pair);
-    janet_deinit();
-    return 0;
-
-    /* Fail to set something up */
-error:
-    destroy_mailbox_pair(pair);
-    janet_eprintf("\nthread failed to start\n");
-    janet_deinit();
-    return 1;
-}
-
-#ifdef JANET_WINDOWS
-
-static DWORD WINAPI janet_create_thread_wrapper(LPVOID param) {
-    thread_worker((JanetMailboxPair *)param);
-    return 0;
-}
-
-static int janet_thread_start_child(JanetMailboxPair *pair) {
-    HANDLE handle = CreateThread(NULL, 0, janet_create_thread_wrapper, pair, 0, NULL);
-    int ret = NULL == handle;
-    /* Does not kill thread, simply detatches */
-    if (!ret) CloseHandle(handle);
-    return ret;
-}
-
-#else
-
-static void *janet_pthread_wrapper(void *param) {
-    thread_worker((JanetMailboxPair *)param);
-    return NULL;
-}
-
-static int janet_thread_start_child(JanetMailboxPair *pair) {
-    pthread_t handle;
-    int error = pthread_create(&handle, NULL, janet_pthread_wrapper, pair);
-    if (error) {
-        return 1;
-    } else {
-        pthread_detach(handle);
-        return 0;
-    }
-}
-
-#endif
-
-/*
- * Setup/Teardown
- */
-
-void janet_threads_init(void) {
-    if (NULL == janet_vm_mailbox) {
-        janet_vm_mailbox = janet_mailbox_create(1, 10);
-    }
-    janet_vm_thread_decode = NULL;
-    janet_vm_thread_current = NULL;
-}
-
-void janet_threads_deinit(void) {
-    janet_mailbox_lock(janet_vm_mailbox);
-    janet_vm_mailbox->closed = 1;
-    janet_mailbox_ref_with_lock(janet_vm_mailbox, -1);
-    janet_vm_mailbox = NULL;
-    janet_vm_thread_current = NULL;
-    janet_vm_thread_decode = NULL;
-}
-
-/*
- * Cfuns
- */
-
-static Janet cfun_thread_current(int32_t argc, Janet *argv) {
-    (void) argv;
-    janet_fixarity(argc, 0);
-    if (NULL == janet_vm_thread_current) {
-        janet_vm_thread_current = janet_make_thread(janet_vm_mailbox, janet_get_core_table("make-image-dict"));
-        janet_gcroot(janet_wrap_abstract(janet_vm_thread_current));
-    }
-    return janet_wrap_abstract(janet_vm_thread_current);
-}
-
-static Janet cfun_thread_new(int32_t argc, Janet *argv) {
-    janet_arity(argc, 1, 3);
-    /* Just type checking */
-    janet_getfunction(argv, 0);
-    int32_t cap = janet_optinteger(argv, argc, 1, 10);
-    if (cap < 1 || cap > UINT16_MAX) {
-        janet_panicf("bad slot #1, expected integer in range [1, 65535], got %d", cap);
-    }
-    uint64_t flags = argc >= 3 ? janet_getflags(argv, 2, janet_thread_flags) : JANET_THREAD_ABSTRACTS;
-    JanetTable *encode;
-    if (flags & JANET_THREAD_HEAVYWEIGHT) {
-        encode = janet_get_core_table("make-image-dict");
-    } else {
-        encode = NULL;
-    }
-
-    JanetMailboxPair *pair = make_mailbox_pair(janet_vm_mailbox, flags);
-    JanetThread *thread = janet_make_thread(pair->newbox, encode);
-    if (janet_thread_start_child(pair)) {
-        destroy_mailbox_pair(pair);
-        janet_panic("could not start thread");
-    }
-
-    if (flags & JANET_THREAD_ABSTRACTS) {
-        if (janet_thread_send(thread, janet_wrap_table(janet_vm_abstract_registry), INFINITY)) {
-            janet_panic("could not send abstract registry to thread");
-        }
-    }
-
-    if (flags & JANET_THREAD_CFUNCTIONS) {
-        if (janet_thread_send(thread, janet_wrap_table(janet_vm_registry), INFINITY)) {
-            janet_panic("could not send registry to thread");
-        }
-    }
-
-    /* If thread started, send the worker function. */
-    if (janet_thread_send(thread, argv[0], INFINITY)) {
-        janet_panicf("could not send worker function %v to thread", argv[0]);
-    }
-
-    return janet_wrap_abstract(thread);
-}
-
-static Janet cfun_thread_send(int32_t argc, Janet *argv) {
-    janet_arity(argc, 2, 3);
-    JanetThread *thread = janet_getthread(argv, 0);
-    int status = janet_thread_send(thread, argv[1], janet_optnumber(argv, argc, 2, 1.0));
-    switch (status) {
-        default:
-            break;
-        case 1:
-            janet_panicf("failed to send message %v", argv[1]);
-        case 2:
-            janet_panic("thread mailbox is closed");
-    }
-    return argv[0];
-}
-
-static Janet cfun_thread_receive(int32_t argc, Janet *argv) {
-    janet_arity(argc, 0, 1);
-    double wait = janet_optnumber(argv, argc, 0, 1.0);
-    Janet out;
-    int status = janet_thread_receive(&out, wait);
-    switch (status) {
-        default:
-            break;
-        case 1:
-            janet_panicf("timeout after %f seconds", wait);
-    }
-    return out;
-}
-
-static Janet cfun_thread_close(int32_t argc, Janet *argv) {
-    janet_fixarity(argc, 1);
-    JanetThread *thread = janet_getthread(argv, 0);
-    janet_close_thread(thread);
-    return janet_wrap_nil();
-}
-
-static const JanetMethod janet_thread_methods[] = {
-    {"send", cfun_thread_send},
-    {"close", cfun_thread_close},
-    {NULL, NULL}
-};
-
-static int janet_thread_getter(void *p, Janet key, Janet *out) {
-    (void) p;
-    if (!janet_checktype(key, JANET_KEYWORD)) return 0;
-    return janet_getmethod(janet_unwrap_keyword(key), janet_thread_methods, out);
-}
-
-static const JanetReg threadlib_cfuns[] = {
-    {
-        "thread/current", cfun_thread_current,
-        JDOC("(thread/current)\n\n"
-             "Get the current running thread.")
-    },
-    {
-        "thread/new", cfun_thread_new,
-        JDOC("(thread/new func &opt capacity flags)\n\n"
-             "Start a new thread that will start immediately. "
-             "If capacity is provided, that is how many messages can be stored in the thread's mailbox before blocking senders. "
-             "The capacity must be between 1 and 65535 inclusive, and defaults to 10. "
-             "Can optionally provide flags to the new thread - supported flags are:\n"
-             "\t:h - Start a heavyweight thread. This loads the core environment by default, so may use more memory initially. Messages may compress better, though.\n"
-             "\t:a - Allow sending over registered abstract types to the new thread\n"
-             "\t:c - Send over cfunction information to the new thread.\n"
-             "Returns a handle to the new thread.")
-    },
-    {
-        "thread/send", cfun_thread_send,
-        JDOC("(thread/send thread msg)\n\n"
-             "Send a message to the thread. This will never block and returns thread immediately. "
-             "Will throw an error if there is a problem sending the message.")
-    },
-    {
-        "thread/receive", cfun_thread_receive,
-        JDOC("(thread/receive &opt timeout)\n\n"
-             "Get a message sent to this thread. If timeout is provided, an error will be thrown after the timeout has elapsed but "
-             "no messages are received.")
-    },
-    {
-        "thread/close", cfun_thread_close,
-        JDOC("(thread/close thread)\n\n"
-             "Close a thread, unblocking it and ending communication with it. Note that closing "
-             "a thread is idempotent and does not cancel the thread's operation. Returns nil.")
-    },
-    {NULL, NULL, NULL}
-};
-
-/* Module entry point */
-void janet_lib_thread(JanetTable *env) {
-    janet_core_cfuns(env, NULL, threadlib_cfuns);
-    janet_register_abstract_type(&janet_thread_type);
-}
-
-#endif

src/core/tuple.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -55,19 +55,35 @@ const Janet *janet_tuple_n(const Janet *values, int32_t n) {
 
 /* 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) {
+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) {
@@ -77,7 +93,10 @@ 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];
@@ -86,7 +105,10 @@ static Janet cfun_tuple_sourcemap(int32_t argc, Janet *argv) {
     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_line = janet_getinteger(argv, 1);
@@ -94,48 +116,15 @@ static Janet cfun_tuple_setmap(int32_t argc, Janet *argv) {
     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. "
-             "'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.")
-    },
-    {
-        "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, "
-             " which is another tuple (line, column).")
-    },
-    {
-        "tuple/setmap", cfun_tuple_setmap,
-        JDOC("(tuple/setmap tup line column)\n\n"
-             "Set the sourcemap metadata on a tuple. line and column indicate "
-             "should be integers.")
-    },
-    {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

@@ -1,606 +0,0 @@
-/*
-* Copyright (c) 2020 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 "features.h"
-#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_abstract(ctx, 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(JanetMarshalContext *ctx) {
-    JanetTArrayBuffer *buf = janet_unmarshal_abstract(ctx, sizeof(JanetTArrayBuffer));
-    size_t size = janet_unmarshal_size(ctx);
-    int32_t flags = janet_unmarshal_int(ctx);
-    ta_buffer_init(buf, size);
-    buf->flags = flags;
-    janet_unmarshal_bytes(ctx, buf->data, size);
-    return buf;
-}
-
-const JanetAbstractType janet_ta_buffer_type = {
-    "ta/buffer",
-    ta_buffer_gc,
-    NULL,
-    NULL,
-    NULL,
-    ta_buffer_marshal,
-    ta_buffer_unmarshal,
-    JANET_ATEND_UNMARSHAL
-};
-
-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_abstract(ctx, p);
-    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(JanetMarshalContext *ctx) {
-    size_t offset;
-    int32_t atype;
-    Janet buffer;
-    JanetTArrayView *view = janet_unmarshal_abstract(ctx, sizeof(JanetTArrayView));
-    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)) != &janet_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;
-    return view;
-}
-
-static JanetMethod tarray_view_methods[6];
-
-static int ta_getter(void *p, Janet key, Janet *out) {
-    size_t index, i;
-    JanetTArrayView *array = p;
-    if (janet_checktype(key, JANET_KEYWORD)) {
-        return janet_getmethod(janet_unwrap_keyword(key), tarray_view_methods, out);
-    }
-    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) {
-        return 0;
-    } else {
-        switch (array->type) {
-            case JANET_TARRAY_TYPE_U8:
-                *out = janet_wrap_number(array->as.u8[i]);
-                break;
-            case JANET_TARRAY_TYPE_S8:
-                *out = janet_wrap_number(array->as.s8[i]);
-                break;
-            case JANET_TARRAY_TYPE_U16:
-                *out = janet_wrap_number(array->as.u16[i]);
-                break;
-            case JANET_TARRAY_TYPE_S16:
-                *out = janet_wrap_number(array->as.s16[i]);
-                break;
-            case JANET_TARRAY_TYPE_U32:
-                *out = janet_wrap_number(array->as.u32[i]);
-                break;
-            case JANET_TARRAY_TYPE_S32:
-                *out = janet_wrap_number(array->as.s32[i]);
-                break;
-#ifdef JANET_INT_TYPES
-            case JANET_TARRAY_TYPE_U64:
-                *out = janet_wrap_u64(array->as.u64[i]);
-                break;
-            case JANET_TARRAY_TYPE_S64:
-                *out = janet_wrap_s64(array->as.s64[i]);
-                break;
-#endif
-            case JANET_TARRAY_TYPE_F32:
-                *out = janet_wrap_number_safe(array->as.f32[i]);
-                break;
-            case JANET_TARRAY_TYPE_F64:
-                *out = janet_wrap_number_safe(array->as.f64[i]);
-                break;
-            default:
-                janet_panicf("cannot get from typed array of type %s",
-                             ta_type_names[array->type]);
-                break;
-        }
-    }
-    return 1;
-}
-
-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 Janet ta_view_next(void *p, Janet key) {
-    JanetTArrayView *view = p;
-    if (janet_checktype(key, JANET_NIL)) {
-        if (view->size > 0) {
-            return janet_wrap_number(0);
-        } else {
-            return janet_wrap_nil();
-        }
-    }
-    if (!janet_checksize(key)) janet_panic("expected size as key");
-    size_t index = (size_t) janet_unwrap_number(key);
-    index++;
-    if (index < view->size) {
-        return janet_wrap_number((double) index);
-    }
-    return janet_wrap_nil();
-}
-
-const JanetAbstractType janet_ta_view_type = {
-    "ta/view",
-    NULL,
-    ta_mark,
-    ta_getter,
-    ta_setter,
-    ta_view_marshal,
-    ta_view_unmarshal,
-    NULL,
-    NULL,
-    NULL,
-    ta_view_next,
-    JANET_ATEND_NEXT
-};
-
-JanetTArrayBuffer *janet_tarray_buffer(size_t size) {
-    JanetTArrayBuffer *buf = janet_abstract(&janet_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(&janet_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(&janet_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, &janet_ta_buffer_type);
-}
-
-JanetTArrayView *janet_gettarray_any(const Janet *argv, int32_t n) {
-    return janet_getabstract(argv, n, &janet_ta_view_type);
-}
-
-JanetTArrayView *janet_gettarray_view(const Janet *argv, int32_t n, JanetTArrayType type) {
-    JanetTArrayView *view = janet_getabstract(argv, n, &janet_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) == &janet_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 if (janet_abstract_type(p) == &janet_ta_buffer_type) {
-            buffer = p;
-        } else {
-            janet_panicf("bad slot #%d, expected ta/view|ta/buffer, got %v",
-                         4, argv[4]);
-        }
-    }
-    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) != &janet_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, &janet_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, &janet_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++) {
-            if (!ta_getter(src, janet_wrap_number(i), &array->data[i - range.start]))
-                array->data[i - range.start] = janet_wrap_nil();
-        }
-    }
-    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, &janet_ta_view_type);
-    size_t index_src = janet_getsize(argv, 1);
-    JanetTArrayView *dst = janet_getabstract(argv, 2, &janet_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, &janet_ta_view_type);
-    size_t index_src = janet_getsize(argv, 1);
-    JanetTArrayView *dst = janet_getabstract(argv, 2, &janet_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 &opt stride offset 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 &opt count)\n\n"
-             "Copy count elements (default 1) 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 &opt count)\n\n"
-             "Swap count elements (default 1) 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 &opt start end)\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}
-};
-
-static JanetMethod tarray_view_methods[] = {
-    {"length", cfun_typed_array_size},
-    {"properties", cfun_typed_array_properties},
-    {"copy-bytes", cfun_typed_array_copy_bytes},
-    {"swap-bytes", cfun_typed_array_swap_bytes},
-    {"slice", cfun_typed_array_slice},
-    {NULL, NULL}
-};
-
-/* Module entry point */
-void janet_lib_typed_array(JanetTable *env) {
-    janet_core_cfuns(env, NULL, ta_cfuns);
-    janet_register_abstract_type(&janet_ta_buffer_type);
-    janet_register_abstract_type(&janet_ta_view_type);
-}
-
-#endif

src/core/util.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -26,6 +26,14 @@
 #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
 
 #include <inttypes.h>
@@ -94,7 +102,7 @@ const char *const janet_status_names[16] = {
     "alive"
 };
 
-#ifdef JANET_NO_PRF
+#ifndef JANET_PRF
 
 int32_t janet_string_calchash(const uint8_t *str, int32_t len) {
     const uint8_t *end = str + len;
@@ -219,19 +227,21 @@ int32_t janet_string_calchash(const uint8_t *str, int32_t len) {
 /* 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 = 0;
+    while (array < end) {
+        uint32_t elem = janet_hash(*array++);
+        hash ^= elem + 0x9e3779b9 + (hash << 6) + (hash >> 2);
+    }
     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 = 0;
     while (kvs < end) {
-        hash = (hash << 5) + hash + janet_hash(kvs->key);
-        hash = (hash << 5) + hash + janet_hash(kvs->value);
+        hash ^= janet_hash(kvs->key) + 0x9e3779b9 + (hash << 6) + (hash >> 2);
+        hash ^= janet_hash(kvs->value) + 0x9e3779b9 + (hash << 6) + (hash >> 2);
         kvs++;
     }
     return (int32_t) hash;
@@ -352,104 +362,208 @@ 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));
 }
-
-/* Load many cfunctions at once */
-static void _janet_cfuns_prefix(JanetTable *env, const char *regprefix, const JanetReg *cfuns, int defprefix) {
-    uint8_t *longname_buffer = NULL;
-    size_t prefixlen = 0;
-    size_t bufsize = 0;
-    if (NULL != regprefix) {
-        prefixlen = strlen(regprefix);
-        bufsize = prefixlen + 256;
-        longname_buffer = malloc(bufsize);
-        if (NULL == longname_buffer) {
-            JANET_OUT_OF_MEMORY;
-        }
-        safe_memcpy(longname_buffer, regprefix, prefixlen);
-        longname_buffer[prefixlen] = '/';
-        prefixlen++;
-    }
-    while (cfuns->name) {
-        Janet name;
-        if (NULL != regprefix) {
-            int32_t nmlen = 0;
-            while (cfuns->name[nmlen]) nmlen++;
-            int32_t totallen = (int32_t) prefixlen + nmlen;
-            if ((size_t) totallen > bufsize) {
-                bufsize = (size_t)(totallen) + 128;
-                longname_buffer = realloc(longname_buffer, bufsize);
-                if (NULL == longname_buffer) {
-                    JANET_OUT_OF_MEMORY;
-                }
-            }
-            safe_memcpy(longname_buffer + prefixlen, cfuns->name, nmlen);
-            name = janet_wrap_symbol(janet_symbol(longname_buffer, totallen));
-        } else {
-            name = janet_csymbolv(cfuns->name);
-        }
-        Janet fun = janet_wrap_cfunction(cfuns->cfun);
-        if (defprefix) {
-            JanetTable *subt = janet_table(2);
-            janet_table_put(subt, janet_ckeywordv("value"), fun);
-            if (cfuns->documentation)
-                janet_table_put(subt, janet_ckeywordv("doc"), janet_cstringv(cfuns->documentation));
-            janet_table_put(env, name, janet_wrap_table(subt));
-        } else {
-            janet_def(env, cfuns->name, fun, cfuns->documentation);
-        }
-        janet_table_put(janet_vm_registry, fun, name);
-        cfuns++;
-    }
-    free(longname_buffer);
+void janet_var(JanetTable *env, const char *name, Janet val, const char *doc) {
+    janet_var_sm(env, name, val, doc, NULL, 0);
 }
 
-void janet_cfuns_prefix(JanetTable *env, const char *regprefix, const JanetReg *cfuns) {
-    _janet_cfuns_prefix(env, regprefix, cfuns, 1);
+/* 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);
 }
 
 void janet_cfuns(JanetTable *env, const char *regprefix, const JanetReg *cfuns) {
-    _janet_cfuns_prefix(env, regprefix, cfuns, 0);
+    while (cfuns->name) {
+        Janet fun = janet_wrap_cfunction(cfuns->cfun);
+        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 */
 
 void janet_register_abstract_type(const JanetAbstractType *at) {
     Janet sym = janet_csymbolv(at->name);
-    if (!(janet_checktype(janet_table_get(janet_vm_abstract_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_abstract_registry, sym, janet_wrap_pointer((void *) at));
+    janet_table_put(janet_vm.abstract_registry, sym, janet_wrap_pointer((void *) at));
 }
 
 const JanetAbstractType *janet_get_abstract_type(Janet key) {
-    Janet wrapped = janet_table_get(janet_vm_abstract_registry, key);
+    Janet wrapped = janet_table_get(janet_vm.abstract_registry, key);
     if (janet_checktype(wrapped, JANET_NIL)) {
         return NULL;
     }
@@ -457,46 +571,82 @@ const JanetAbstractType *janet_get_abstract_type(Janet key) {
 }
 
 #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_table_put(env, key, x);
     if (janet_checktype(x, JANET_CFUNCTION)) {
-        janet_table_put(janet_vm_registry, x, key);
+        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) {
+JanetBinding janet_resolve_ext(JanetTable *env, const uint8_t *sym) {
     Janet ref;
     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);
+
+    /* 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;
+    }
+
     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;
+        binding.value = janet_table_get(entry_table, janet_ckeywordv("value"));
+        binding.type = JANET_BINDING_MACRO;
+        return binding;
     }
+
     ref = janet_table_get(entry_table, janet_ckeywordv("ref"));
     if (janet_checktype(ref, JANET_ARRAY)) {
-        *out = ref;
-        return JANET_BINDING_VAR;
+        binding.value = ref;
+        binding.type = JANET_BINDING_VAR;
+        return binding;
     }
-    *out = janet_table_get(entry_table, janet_ckeywordv("value"));
-    return JANET_BINDING_DEF;
+
+    binding.value = janet_table_get(entry_table, janet_ckeywordv("value"));
+    binding.type = JANET_BINDING_DEF;
+    return binding;
+}
+
+JanetBindingType janet_resolve(JanetTable *env, const uint8_t *sym, Janet *out) {
+    JanetBinding binding = janet_resolve_ext(env, sym);
+    *out = binding.value;
+    return binding.type;
 }
 
 /* Resolve a symbol in the core environment. */
@@ -574,8 +724,12 @@ 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) {
@@ -586,3 +740,140 @@ JanetTable *janet_get_core_table(const char *name) {
     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
+/* For macos */
+#ifdef __MACH__
+#include <mach/clock.h>
+#include <mach/mach.h>
+#endif
+#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;
+}
+#elif defined(__MACH__)
+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) 2020 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
@@ -26,11 +26,17 @@
 #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
 #include <stdio.h>
@@ -43,26 +49,16 @@
 } while (0)
 #endif
 
+#define JANET_MARSHAL_DECREF 0x40000
+
 #define janet_assert(c, m) do { \
     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 { fprintf(stderr, "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 */
 #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);
@@ -71,10 +67,10 @@ 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,
@@ -86,17 +82,45 @@ void janet_buffer_format(
     int32_t argstart,
     int32_t argc,
     Janet *argv);
+Janet janet_next_impl(Janet ds, Janet key, int is_interpreter);
+
+/* 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);
@@ -104,6 +128,7 @@ 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);
@@ -123,13 +148,14 @@ void janet_lib_typed_array(JanetTable *env);
 #ifdef JANET_INT_TYPES
 void janet_lib_inttypes(JanetTable *env);
 #endif
-#ifdef JANET_THREADS
-void janet_lib_thread(JanetTable *env);
-#endif
 #ifdef JANET_NET
 void janet_lib_net(JanetTable *env);
-void janet_net_deinit(void);
-void janet_net_markloop(void);
+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) 2020 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
@@ -25,12 +25,11 @@
 #include "util.h"
 #include "state.h"
 #include "gc.h"
+#include "fiber.h"
 #include <janet.h>
 #endif
 
-JANET_THREAD_LOCAL JanetTraversalNode *janet_vm_traversal = NULL;
-JANET_THREAD_LOCAL JanetTraversalNode *janet_vm_traversal_top = NULL;
-JANET_THREAD_LOCAL JanetTraversalNode *janet_vm_traversal_base = NULL;
+#include <math.h>
 
 static void push_traversal_node(void *lhs, void *rhs, int32_t index2) {
     JanetTraversalNode node;
@@ -38,21 +37,22 @@ static void push_traversal_node(void *lhs, void *rhs, int32_t index2) {
     node.other = (JanetGCObject *) rhs;
     node.index = 0;
     node.index2 = index2;
-    if (janet_vm_traversal + 1 >= janet_vm_traversal_top) {
-        size_t oldsize = janet_vm_traversal - janet_vm_traversal_base;
+    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 = realloc(janet_vm_traversal_base, newsize * sizeof(JanetTraversalNode));
+        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_base = tn;
+        janet_vm.traversal_top = janet_vm.traversal_base + newsize;
+        janet_vm.traversal = janet_vm.traversal_base + oldsize;
     }
-    *(++janet_vm_traversal) = node;
+    *(++janet_vm.traversal) = node;
 }
 
 /*
@@ -64,8 +64,8 @@ static void push_traversal_node(void *lhs, void *rhs, int32_t index2) {
  * 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) {
+    JanetTraversalNode *t = janet_vm.traversal;
+    while (t && t > janet_vm.traversal_base) {
         JanetGCObject *self = t->self;
         JanetTupleHead *tself = (JanetTupleHead *)self;
         JanetStructHead *sself = (JanetStructHead *)self;
@@ -78,7 +78,7 @@ static int traversal_next(Janet *x, Janet *y) {
                 int32_t index = t->index++;
                 *x = tself->data[index];
                 *y = tother->data[index];
-                janet_vm_traversal = t;
+                janet_vm.traversal = t;
                 return 0;
             }
             if (t->index2 && tself->length != tother->length) {
@@ -91,20 +91,31 @@ static int traversal_next(Janet *x, Janet *y) {
                 int32_t index = t->index++;
                 *x = sself->data[index].value;
                 *y = sother->data[index].value;
-                janet_vm_traversal = t;
+                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;
+                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;
+    janet_vm.traversal = t;
     return 2;
 }
 
@@ -113,6 +124,10 @@ static int traversal_next(Janet *x, Janet *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:
@@ -175,6 +190,44 @@ Janet janet_next(Janet ds, Janet key) {
             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 janet_wrap_nil();
 }
@@ -194,7 +247,7 @@ static int janet_compare_abstract(JanetAbstract xx, JanetAbstract yy) {
 }
 
 int janet_equals(Janet x, Janet y) {
-    janet_vm_traversal = janet_vm_traversal_base;
+    janet_vm.traversal = janet_vm.traversal_base;
     do {
         if (janet_type(x) != janet_type(y)) return 0;
         switch (janet_type(x)) {
@@ -231,6 +284,8 @@ int janet_equals(Janet x, Janet 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;
             }
@@ -261,6 +316,17 @@ 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);
+            uint32_t lo = (uint32_t)(as.u & 0xFFFFFFFF);
+            uint32_t hi = (uint32_t)(as.u >> 32);
+            hash = (int32_t)(hi ^ (lo >> 3));
+            break;
+        }
         case JANET_ABSTRACT: {
             JanetAbstract xx = janet_unwrap_abstract(x);
             const JanetAbstractType *at = janet_abstract_type(xx);
@@ -271,14 +337,12 @@ int32_t janet_hash(Janet x) {
         }
         /* fallthrough */
         default:
-            /* TODO - test performance with different hash functions */
             if (sizeof(double) == sizeof(void *)) {
                 /* Assuming 8 byte pointer */
                 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);
+                hash = (int32_t)(hi ^ (lo >> 3));
             } else {
                 /* Assuming 4 byte pointer (or smaller) */
                 hash = (int32_t)((char *)janet_unwrap_pointer(x) - (char *)0);
@@ -293,7 +357,7 @@ int32_t janet_hash(Janet x) {
  * If y is less, returns 1. All types are comparable
  * and should have strict ordering, excepts NaNs. */
 int janet_compare(Janet x, Janet y) {
-    janet_vm_traversal = janet_vm_traversal_base;
+    janet_vm.traversal = janet_vm.traversal_base;
     int status;
     do {
         JanetType tx = janet_type(x);
@@ -419,6 +483,14 @@ Janet janet_in(Janet ds, Janet key) {
             }
             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;
 }
@@ -474,6 +546,14 @@ Janet janet_get(Janet ds, Janet key) {
             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();
+            }
+        }
     }
 }
 
@@ -530,6 +610,14 @@ Janet janet_getindex(Janet ds, int32_t index) {
             }
             break;
         }
+        case JANET_FIBER: {
+            if (index == 0) {
+                value = janet_unwrap_fiber(ds)->last_value;
+            } else {
+                value = janet_wrap_nil();
+            }
+            break;
+        }
     }
     return value;
 }

src/core/vector.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -43,7 +43,7 @@ void *janet_v_flattenmem(void *v, int32_t itemsize) {
     int32_t *p;
     if (NULL == v) return NULL;
     size_t size = (size_t) itemsize * janet_v__cnt(v);
-    p = malloc(size);
+    p = janet_malloc(size);
     if (NULL != p) {
         safe_memcpy(p, v, size);
         return p;

src/core/vector.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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

src/core/vm.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -32,16 +32,6 @@
 
 #include <math.h>
 
-/* VM state */
-JANET_THREAD_LOCAL JanetTable *janet_vm_core_env;
-JANET_THREAD_LOCAL JanetTable *janet_vm_registry;
-JANET_THREAD_LOCAL JanetTable *janet_vm_abstract_registry;
-JANET_THREAD_LOCAL int janet_vm_stackn = 0;
-JANET_THREAD_LOCAL JanetFiber *janet_vm_fiber = NULL;
-JANET_THREAD_LOCAL JanetFiber *janet_vm_root_fiber = NULL;
-JANET_THREAD_LOCAL Janet *janet_vm_return_reg = NULL;
-JANET_THREAD_LOCAL jmp_buf *janet_vm_jmp_buf = NULL;
-
 /* Virtual registers
  *
  * One instruction word
@@ -90,14 +80,18 @@ JANET_THREAD_LOCAL jmp_buf *janet_vm_jmp_buf = NULL;
     func = janet_stack_frame(stack)->func; \
 } while (0)
 #define vm_return(sig, val) do { \
-    janet_vm_return_reg[0] = (val); \
+    janet_vm.return_reg[0] = (val); \
     vm_commit(); \
     return (sig); \
 } while (0)
+#define vm_return_no_restore(sig, val) do { \
+    janet_vm.return_reg[0] = (val); \
+    return (sig); \
+} while (0)
 
 /* Next instruction variations */
 #define maybe_collect() do {\
-    if (janet_vm_next_collection >= janet_vm_gc_interval) janet_collect(); } while (0)
+    if (janet_vm.next_collection >= janet_vm.gc_interval) janet_collect(); } while (0)
 #define vm_checkgc_next() maybe_collect(); vm_next()
 #define vm_pcnext() pc++; vm_next()
 #define vm_checkgc_pcnext() maybe_collect(); vm_pcnext()
@@ -117,6 +111,17 @@ JANET_THREAD_LOCAL jmp_buf *janet_vm_jmp_buf = NULL;
         janet_panicf("expected %T, got %v", (TS), (X)); \
     } \
 } while (0)
+#ifdef JANET_NO_INTERPRETER_INTERRUPT
+#define vm_maybe_auto_suspend(COND)
+#else
+#define vm_maybe_auto_suspend(COND) do { \
+    if ((COND) && janet_vm.auto_suspend) { \
+        janet_vm.auto_suspend = 0; \
+        fiber->flags |= (JANET_FIBER_RESUME_NO_USEVAL | JANET_FIBER_RESUME_NO_SKIP); \
+        vm_return(JANET_SIGNAL_INTERRUPT, janet_wrap_nil()); \
+    } \
+} while (0)
+#endif
 
 /* Templates for certain patterns in opcodes */
 #define vm_binop_immediate(op)\
@@ -197,6 +202,20 @@ JANET_THREAD_LOCAL jmp_buf *janet_vm_jmp_buf = NULL;
             vm_checkgc_pcnext();\
         }\
     }
+#define vm_compop_imm(op) \
+    {\
+        Janet op1 = stack[B];\
+        if (janet_checktype(op1, JANET_NUMBER)) {\
+            double x1 = janet_unwrap_number(op1);\
+            double x2 = (double) CS; \
+            stack[A] = janet_wrap_boolean(x1 op x2);\
+            vm_pcnext();\
+        } else {\
+            vm_commit();\
+            stack[A] = janet_wrap_boolean(janet_compare(op1, janet_wrap_integer(CS)) op 0);\
+            vm_checkgc_pcnext();\
+        }\
+    }
 
 /* Trace a function call */
 static void vm_do_trace(JanetFunction *func, int32_t argc, const Janet *argv) {
@@ -256,11 +275,16 @@ static Janet call_nonfn(JanetFiber *fiber, Janet callee) {
     return janet_method_invoke(callee, argc, fiber->data + fiber->stacktop);
 }
 
+/* Method lookup could potentially handle tables specially... */
+static Janet method_to_fun(Janet method, Janet obj) {
+    return janet_get(obj, method);
+}
+
 /* Get a callable from a keyword method name and ensure that it is valid. */
 static Janet resolve_method(Janet name, JanetFiber *fiber) {
     int32_t argc = fiber->stacktop - fiber->stackstart;
     if (argc < 1) janet_panicf("method call (%v) takes at least 1 argument, got 0", name);
-    Janet callee = janet_get(fiber->data[fiber->stackstart], name);
+    Janet callee = method_to_fun(name, fiber->data[fiber->stackstart]);
     if (janet_checktype(callee, JANET_NIL))
         janet_panicf("unknown method %v invoked on %v", name, fiber->data[fiber->stackstart]);
     return callee;
@@ -268,8 +292,7 @@ static Janet resolve_method(Janet name, JanetFiber *fiber) {
 
 /* Lookup method on value x */
 static Janet janet_method_lookup(Janet x, const char *name) {
-    Janet kname = janet_ckeywordv(name);
-    return janet_get(x, kname);
+    return method_to_fun(janet_ckeywordv(name), x);
 }
 
 /* Call a method first on the righthand side, and then on the left hand side with a prefix */
@@ -373,9 +396,9 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
         &&label_JOP_GREATER_THAN_EQUAL,
         &&label_JOP_LESS_THAN_EQUAL,
         &&label_JOP_NEXT,
-        &&label_unknown_op,
-        &&label_unknown_op,
-        &&label_unknown_op,
+        &&label_JOP_NOT_EQUALS,
+        &&label_JOP_NOT_EQUALS_IMMEDIATE,
+        &&label_JOP_CANCEL,
         &&label_unknown_op,
         &&label_unknown_op,
         &&label_unknown_op,
@@ -563,6 +586,15 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
     register Janet *stack;
     register uint32_t *pc;
     register JanetFunction *func;
+
+    if (fiber->flags & JANET_FIBER_RESUME_SIGNAL) {
+        JanetSignal sig = (fiber->gc.flags & JANET_FIBER_STATUS_MASK) >> JANET_FIBER_STATUS_OFFSET;
+        fiber->gc.flags &= ~JANET_FIBER_STATUS_MASK;
+        fiber->flags &= ~(JANET_FIBER_RESUME_SIGNAL | JANET_FIBER_FLAG_MASK);
+        janet_vm.return_reg[0] = in;
+        return sig;
+    }
+
     vm_restore();
 
     if (fiber->flags & JANET_FIBER_DID_LONGJUMP) {
@@ -613,7 +645,7 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
         Janet retval = stack[D];
         int entrance_frame = janet_stack_frame(stack)->flags & JANET_STACKFRAME_ENTRANCE;
         janet_fiber_popframe(fiber);
-        if (entrance_frame) vm_return(JANET_SIGNAL_OK, retval);
+        if (entrance_frame) vm_return_no_restore(JANET_SIGNAL_OK, retval);
         vm_restore();
         stack[A] = retval;
         vm_checkgc_pcnext();
@@ -623,7 +655,7 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
         Janet retval = janet_wrap_nil();
         int entrance_frame = janet_stack_frame(stack)->flags & JANET_STACKFRAME_ENTRANCE;
         janet_fiber_popframe(fiber);
-        if (entrance_frame) vm_return(JANET_SIGNAL_OK, retval);
+        if (entrance_frame) vm_return_no_restore(JANET_SIGNAL_OK, retval);
         vm_restore();
         stack[A] = retval;
         vm_checkgc_pcnext();
@@ -725,11 +757,13 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
 
     VM_OP(JOP_JUMP)
     pc += DS;
+    vm_maybe_auto_suspend(DS < 0);
     vm_next();
 
     VM_OP(JOP_JUMP_IF)
     if (janet_truthy(stack[A])) {
         pc += ES;
+        vm_maybe_auto_suspend(ES < 0);
     } else {
         pc++;
     }
@@ -740,12 +774,14 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
         pc++;
     } else {
         pc += ES;
+        vm_maybe_auto_suspend(ES < 0);
     }
     vm_next();
 
     VM_OP(JOP_JUMP_IF_NIL)
     if (janet_checktype(stack[A], JANET_NIL)) {
         pc += ES;
+        vm_maybe_auto_suspend(ES < 0);
     } else {
         pc++;
     }
@@ -756,6 +792,7 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
         pc++;
     } else {
         pc += ES;
+        vm_maybe_auto_suspend(ES < 0);
     }
     vm_next();
 
@@ -766,8 +803,7 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
     vm_compop( <=);
 
     VM_OP(JOP_LESS_THAN_IMMEDIATE)
-    stack[A] = janet_wrap_boolean(janet_unwrap_integer(stack[B]) < CS);
-    vm_pcnext();
+    vm_compop_imm( <);
 
     VM_OP(JOP_GREATER_THAN)
     vm_compop( >);
@@ -776,15 +812,22 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
     vm_compop( >=);
 
     VM_OP(JOP_GREATER_THAN_IMMEDIATE)
-    stack[A] = janet_wrap_boolean(janet_unwrap_integer(stack[B]) > CS);
-    vm_pcnext();
+    vm_compop_imm( >);
 
     VM_OP(JOP_EQUALS)
     stack[A] = janet_wrap_boolean(janet_equals(stack[B], stack[C]));
     vm_pcnext();
 
     VM_OP(JOP_EQUALS_IMMEDIATE)
-    stack[A] = janet_wrap_boolean(janet_unwrap_integer(stack[B]) == CS);
+    stack[A] = janet_wrap_boolean(janet_unwrap_number(stack[B]) == (double) CS);
+    vm_pcnext();
+
+    VM_OP(JOP_NOT_EQUALS)
+    stack[A] = janet_wrap_boolean(!janet_equals(stack[B], stack[C]));
+    vm_pcnext();
+
+    VM_OP(JOP_NOT_EQUALS_IMMEDIATE)
+    stack[A] = janet_wrap_boolean(janet_unwrap_number(stack[B]) != (double) CS);
     vm_pcnext();
 
     VM_OP(JOP_COMPARE)
@@ -792,7 +835,12 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
     vm_pcnext();
 
     VM_OP(JOP_NEXT)
-    stack[A] = janet_next(stack[B], stack[C]);
+    vm_commit();
+    {
+        Janet temp = janet_next_impl(stack[B], stack[C], 1);
+        vm_restore();
+        stack[A] = temp;
+    }
     vm_pcnext();
 
     VM_OP(JOP_LOAD_NIL)
@@ -918,6 +966,7 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
     vm_checkgc_pcnext();
 
     VM_OP(JOP_CALL) {
+        vm_maybe_auto_suspend(1);
         Janet callee = stack[E];
         if (fiber->stacktop > fiber->maxstack) {
             vm_throw("stack overflow");
@@ -957,6 +1006,7 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
     }
 
     VM_OP(JOP_TAILCALL) {
+        vm_maybe_auto_suspend(1);
         Janet callee = stack[D];
         if (fiber->stacktop > fiber->maxstack) {
             vm_throw("stack overflow");
@@ -992,8 +1042,9 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
                 retreg = call_nonfn(fiber, callee);
             }
             janet_fiber_popframe(fiber);
-            if (entrance_frame)
-                vm_return(JANET_SIGNAL_OK, retreg);
+            if (entrance_frame) {
+                vm_return_no_restore(JANET_SIGNAL_OK, retreg);
+            }
             vm_restore();
             stack[A] = retreg;
             vm_checkgc_pcnext();
@@ -1002,6 +1053,7 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
 
     VM_OP(JOP_RESUME) {
         Janet retreg;
+        vm_maybe_auto_suspend(1);
         vm_assert_type(stack[B], JANET_FIBER);
         JanetFiber *child = janet_unwrap_fiber(stack[B]);
         if (janet_check_can_resume(child, &retreg)) {
@@ -1040,6 +1092,25 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
         vm_return((int) sub_status, stack[B]);
     }
 
+    VM_OP(JOP_CANCEL) {
+        Janet retreg;
+        vm_assert_type(stack[B], JANET_FIBER);
+        JanetFiber *child = janet_unwrap_fiber(stack[B]);
+        if (janet_check_can_resume(child, &retreg)) {
+            vm_commit();
+            janet_panicv(retreg);
+        }
+        fiber->child = child;
+        JanetSignal sig = janet_continue_signal(child, stack[C], &retreg, JANET_SIGNAL_ERROR);
+        if (sig != JANET_SIGNAL_OK && !(child->flags & (1 << sig))) {
+            vm_return(sig, retreg);
+        }
+        fiber->child = NULL;
+        stack = fiber->data + fiber->frame;
+        stack[A] = retreg;
+        vm_checkgc_pcnext();
+    }
+
     VM_OP(JOP_PUT)
     vm_commit();
     fiber->flags |= JANET_FIBER_RESUME_NO_USEVAL;
@@ -1216,9 +1287,9 @@ JanetSignal janet_step(JanetFiber *fiber, Janet in, Janet *out) {
 
 Janet janet_call(JanetFunction *fun, int32_t argc, const Janet *argv) {
     /* Check entry conditions */
-    if (!janet_vm_fiber)
+    if (!janet_vm.fiber)
         janet_panic("janet_call failed because there is no current fiber");
-    if (janet_vm_stackn >= JANET_RECURSION_GUARD)
+    if (janet_vm.stackn >= JANET_RECURSION_GUARD)
         janet_panic("C stack recursed too deeply");
 
     /* Tracing */
@@ -1227,35 +1298,42 @@ Janet janet_call(JanetFunction *fun, int32_t argc, const Janet *argv) {
     }
 
     /* Push frame */
-    janet_fiber_pushn(janet_vm_fiber, argv, argc);
-    if (janet_fiber_funcframe(janet_vm_fiber, fun)) {
-        janet_panicf("arity mismatch in %v", janet_wrap_function(fun));
+    janet_fiber_pushn(janet_vm.fiber, argv, argc);
+    if (janet_fiber_funcframe(janet_vm.fiber, fun)) {
+        int32_t min = fun->def->min_arity;
+        int32_t max = fun->def->max_arity;
+        Janet funv = janet_wrap_function(fun);
+        if (min == max && min != argc)
+            janet_panicf("arity mismatch in %v, expected %d, got %d", funv, min, argc);
+        if (min >= 0 && argc < min)
+            janet_panicf("arity mismatch in %v, expected at least %d, got %d", funv, min, argc);
+        janet_panicf("arity mismatch in %v, expected at most %d, got %d", funv, max, argc);
     }
-    janet_fiber_frame(janet_vm_fiber)->flags |= JANET_STACKFRAME_ENTRANCE;
+    janet_fiber_frame(janet_vm.fiber)->flags |= JANET_STACKFRAME_ENTRANCE;
 
     /* Set up */
-    int32_t oldn = janet_vm_stackn++;
+    int32_t oldn = janet_vm.stackn++;
     int handle = janet_gclock();
 
     /* Run vm */
-    janet_vm_fiber->flags |= JANET_FIBER_RESUME_NO_USEVAL | JANET_FIBER_RESUME_NO_SKIP;
-    JanetSignal signal = run_vm(janet_vm_fiber, janet_wrap_nil());
+    janet_vm.fiber->flags |= JANET_FIBER_RESUME_NO_USEVAL | JANET_FIBER_RESUME_NO_SKIP;
+    JanetSignal signal = run_vm(janet_vm.fiber, janet_wrap_nil());
 
     /* Teardown */
-    janet_vm_stackn = oldn;
+    janet_vm.stackn = oldn;
     janet_gcunlock(handle);
 
     if (signal != JANET_SIGNAL_OK) {
-        janet_panicv(*janet_vm_return_reg);
+        janet_panicv(*janet_vm.return_reg);
     }
 
-    return *janet_vm_return_reg;
+    return *janet_vm.return_reg;
 }
 
 static JanetSignal janet_check_can_resume(JanetFiber *fiber, Janet *out) {
     /* Check conditions */
     JanetFiberStatus old_status = janet_fiber_status(fiber);
-    if (janet_vm_stackn >= JANET_RECURSION_GUARD) {
+    if (janet_vm.stackn >= JANET_RECURSION_GUARD) {
         janet_fiber_set_status(fiber, JANET_STATUS_ERROR);
         *out = janet_cstringv("C stack recursed too deeply");
         return JANET_SIGNAL_ERROR;
@@ -1272,23 +1350,68 @@ static JanetSignal janet_check_can_resume(JanetFiber *fiber, Janet *out) {
     return JANET_SIGNAL_OK;
 }
 
+void janet_try_init(JanetTryState *state) {
+    state->stackn = janet_vm.stackn++;
+    state->gc_handle = janet_vm.gc_suspend;
+    state->vm_fiber = janet_vm.fiber;
+    state->vm_jmp_buf = janet_vm.signal_buf;
+    state->vm_return_reg = janet_vm.return_reg;
+    janet_vm.return_reg = &(state->payload);
+    janet_vm.signal_buf = &(state->buf);
+}
+
+void janet_restore(JanetTryState *state) {
+    janet_vm.stackn = state->stackn;
+    janet_vm.gc_suspend = state->gc_handle;
+    janet_vm.fiber = state->vm_fiber;
+    janet_vm.signal_buf = state->vm_jmp_buf;
+    janet_vm.return_reg = state->vm_return_reg;
+}
+
 static JanetSignal janet_continue_no_check(JanetFiber *fiber, Janet in, Janet *out) {
-    jmp_buf buf;
 
     JanetFiberStatus old_status = janet_fiber_status(fiber);
 
+#ifdef JANET_EV
+    janet_fiber_did_resume(fiber);
+#endif
+
+    /* Clear last value */
+    fiber->last_value = janet_wrap_nil();
+
     /* Continue child fiber if it exists */
     if (fiber->child) {
-        if (janet_vm_root_fiber == NULL) janet_vm_root_fiber = fiber;
+        if (janet_vm.root_fiber == NULL) janet_vm.root_fiber = fiber;
         JanetFiber *child = fiber->child;
-        janet_vm_stackn++;
+        uint32_t instr = (janet_stack_frame(fiber->data + fiber->frame)->pc)[0];
+        janet_vm.stackn++;
         JanetSignal sig = janet_continue(child, in, &in);
-        janet_vm_stackn--;
-        if (janet_vm_root_fiber == fiber) janet_vm_root_fiber = NULL;
+        janet_vm.stackn--;
+        if (janet_vm.root_fiber == fiber) janet_vm.root_fiber = NULL;
         if (sig != JANET_SIGNAL_OK && !(child->flags & (1 << sig))) {
             *out = in;
+            janet_fiber_set_status(fiber, sig);
             return sig;
         }
+        /* Check if we need any special handling for certain opcodes */
+        switch (instr & 0x7F) {
+            default:
+                break;
+            case JOP_NEXT: {
+                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) {
+                    in = janet_wrap_nil();
+                } else {
+                    in = janet_wrap_integer(0);
+                }
+                break;
+            }
+        }
         fiber->child = NULL;
     }
 
@@ -1306,47 +1429,24 @@ static JanetSignal janet_continue_no_check(JanetFiber *fiber, Janet in, Janet *o
     }
 
     /* Save global state */
-    int32_t oldn = janet_vm_stackn++;
-    int handle = janet_vm_gc_suspend;
-    JanetFiber *old_vm_fiber = janet_vm_fiber;
-    jmp_buf *old_vm_jmp_buf = janet_vm_jmp_buf;
-    Janet *old_vm_return_reg = janet_vm_return_reg;
-
-    /* Setup fiber */
-    if (janet_vm_root_fiber == NULL) janet_vm_root_fiber = fiber;
-    janet_vm_fiber = fiber;
-    janet_gcroot(janet_wrap_fiber(fiber));
-    janet_fiber_set_status(fiber, JANET_STATUS_ALIVE);
-    janet_vm_return_reg = out;
-    janet_vm_jmp_buf = &buf;
-
-    /* Run loop */
-    JanetSignal signal;
-    int jmpsig;
-#if defined(JANET_BSD) || defined(JANET_APPLE)
-    jmpsig = _setjmp(buf);
-#else
-    jmpsig = setjmp(buf);
-#endif
-    if (jmpsig) {
-        signal = (JanetSignal) jmpsig;
-    } else {
-        signal = run_vm(fiber, in);
+    JanetTryState tstate;
+    JanetSignal sig = janet_try(&tstate);
+    if (!sig) {
+        /* Normal setup */
+        if (janet_vm.root_fiber == NULL) janet_vm.root_fiber = fiber;
+        janet_vm.fiber = fiber;
+        janet_fiber_set_status(fiber, JANET_STATUS_ALIVE);
+        sig = run_vm(fiber, in);
     }
 
-    /* Tear down fiber */
-    janet_fiber_set_status(fiber, signal);
-    janet_gcunroot(janet_wrap_fiber(fiber));
+    /* Restore */
+    if (janet_vm.root_fiber == fiber) janet_vm.root_fiber = NULL;
+    janet_fiber_set_status(fiber, sig);
+    janet_restore(&tstate);
+    fiber->last_value = tstate.payload;
+    *out = tstate.payload;
 
-    /* Restore global state */
-    if (janet_vm_root_fiber == fiber) janet_vm_root_fiber = NULL;
-    janet_vm_gc_suspend = handle;
-    janet_vm_fiber = old_vm_fiber;
-    janet_vm_stackn = oldn;
-    janet_vm_return_reg = old_vm_return_reg;
-    janet_vm_jmp_buf = old_vm_jmp_buf;
-
-    return signal;
+    return sig;
 }
 
 /* Enter the main vm loop */
@@ -1357,6 +1457,20 @@ JanetSignal janet_continue(JanetFiber *fiber, Janet in, Janet *out) {
     return janet_continue_no_check(fiber, in, out);
 }
 
+/* Enter the main vm loop but immediately raise a signal */
+JanetSignal janet_continue_signal(JanetFiber *fiber, Janet in, Janet *out, JanetSignal sig) {
+    JanetSignal tmp_signal = janet_check_can_resume(fiber, out);
+    if (tmp_signal) return tmp_signal;
+    if (sig != JANET_SIGNAL_OK) {
+        JanetFiber *child = fiber;
+        while (child->child) child = child->child;
+        child->gc.flags &= ~JANET_FIBER_STATUS_MASK;
+        child->gc.flags |= sig << JANET_FIBER_STATUS_OFFSET;
+        child->flags |= JANET_FIBER_RESUME_SIGNAL;
+    }
+    return janet_continue_no_check(fiber, in, out);
+}
+
 JanetSignal janet_pcall(
     JanetFunction *fun,
     int32_t argc,
@@ -1379,7 +1493,9 @@ JanetSignal janet_pcall(
 
 Janet janet_mcall(const char *name, int32_t argc, Janet *argv) {
     /* At least 1 argument */
-    if (argc < 1) janet_panicf("method :%s expected at least 1 argument");
+    if (argc < 1) {
+        janet_panicf("method :%s expected at least 1 argument", name);
+    }
     /* Find method */
     Janet method = janet_method_lookup(argv[0], name);
     if (janet_checktype(method, JANET_NIL)) {
@@ -1391,43 +1507,63 @@ Janet janet_mcall(const char *name, int32_t argc, Janet *argv) {
 
 /* Setup VM */
 int janet_init(void) {
+
     /* Garbage collection */
-    janet_vm_blocks = NULL;
-    janet_vm_next_collection = 0;
-    /* Setting memoryInterval to zero forces
-     * a collection pretty much every cycle, which is
-     * incredibly horrible for performance, but can help ensure
-     * there are no memory bugs during development */
-    janet_vm_gc_interval = 0x10000;
+    janet_vm.blocks = NULL;
+    janet_vm.next_collection = 0;
+    janet_vm.gc_interval = 0x400000;
+    janet_vm.block_count = 0;
+
     janet_symcache_init();
+
     /* Initialize gc roots */
-    janet_vm_roots = NULL;
-    janet_vm_root_count = 0;
-    janet_vm_root_capacity = 0;
+    janet_vm.roots = NULL;
+    janet_vm.root_count = 0;
+    janet_vm.root_capacity = 0;
+
     /* Scratch memory */
-    janet_scratch_mem = NULL;
-    janet_scratch_len = 0;
-    janet_scratch_cap = 0;
+    janet_vm.user = NULL;
+    janet_vm.scratch_mem = NULL;
+    janet_vm.scratch_len = 0;
+    janet_vm.scratch_cap = 0;
+
     /* Initialize registry */
-    janet_vm_registry = janet_table(0);
-    janet_vm_abstract_registry = janet_table(0);
-    janet_gcroot(janet_wrap_table(janet_vm_registry));
-    janet_gcroot(janet_wrap_table(janet_vm_abstract_registry));
+    janet_vm.registry = NULL;
+    janet_vm.registry_cap = 0;
+    janet_vm.registry_count = 0;
+    janet_vm.registry_dirty = 0;
+
+    /* Intialize abstract registry */
+    janet_vm.abstract_registry = janet_table(0);
+    janet_gcroot(janet_wrap_table(janet_vm.abstract_registry));
+
     /* Traversal */
-    janet_vm_traversal = NULL;
-    janet_vm_traversal_base = NULL;
-    janet_vm_traversal_top = NULL;
+    janet_vm.traversal = NULL;
+    janet_vm.traversal_base = NULL;
+    janet_vm.traversal_top = NULL;
+
     /* Core env */
-    janet_vm_core_env = NULL;
+    janet_vm.core_env = NULL;
+
+    /* Auto suspension */
+    janet_vm.auto_suspend = 0;
+
+    /* Dynamic bindings */
+    janet_vm.top_dyns = NULL;
+
     /* Seed RNG */
     janet_rng_seed(janet_default_rng(), 0);
+
     /* Fibers */
-    janet_vm_fiber = NULL;
-    janet_vm_root_fiber = NULL;
-    janet_vm_stackn = 0;
-    /* Threads */
-#ifdef JANET_THREADS
-    janet_threads_init();
+    janet_vm.fiber = NULL;
+    janet_vm.root_fiber = NULL;
+    janet_vm.stackn = 0;
+
+#ifdef JANET_EV
+    janet_ev_init();
+#endif
+#ifdef JANET_NET
+    janet_net_init();
 #endif
     return 0;
 }
@@ -1436,18 +1572,21 @@ int janet_init(void) {
 void janet_deinit(void) {
     janet_clear_memory();
     janet_symcache_deinit();
-    free(janet_vm_roots);
-    janet_vm_roots = NULL;
-    janet_vm_root_count = 0;
-    janet_vm_root_capacity = 0;
-    janet_vm_registry = NULL;
-    janet_vm_abstract_registry = NULL;
-    janet_vm_core_env = NULL;
-    free(janet_vm_traversal_base);
-    janet_vm_fiber = NULL;
-    janet_vm_root_fiber = NULL;
-#ifdef JANET_THREADS
-    janet_threads_deinit();
+    janet_free(janet_vm.roots);
+    janet_vm.roots = NULL;
+    janet_vm.root_count = 0;
+    janet_vm.root_capacity = 0;
+    janet_vm.abstract_registry = NULL;
+    janet_vm.core_env = NULL;
+    janet_vm.top_dyns = NULL;
+    janet_vm.user = NULL;
+    janet_free(janet_vm.traversal_base);
+    janet_vm.fiber = NULL;
+    janet_vm.root_fiber = NULL;
+    janet_free(janet_vm.registry);
+    janet_vm.registry = NULL;
+#ifdef JANET_EV
+    janet_ev_deinit();
 #endif
 #ifdef JANET_NET
     janet_net_deinit();

src/core/wrap.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -162,8 +162,8 @@ Janet(janet_wrap_number)(double x) {
 
 void *janet_memalloc_empty(int32_t count) {
     int32_t i;
-    void *mem = malloc((size_t) count * sizeof(JanetKV));
-    janet_vm_next_collection += (size_t) count * sizeof(JanetKV);
+    void *mem = janet_malloc((size_t) count * sizeof(JanetKV));
+    janet_vm.next_collection += (size_t) count * sizeof(JanetKV);
     if (NULL == mem) {
         JANET_OUT_OF_MEMORY;
     }

src/include/janet.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -20,6 +20,8 @@
 * IN THE SOFTWARE.
 */
 
+#include "janetconf.h"
+
 #ifndef JANET_H_defined
 #define JANET_H_defined
 
@@ -35,8 +37,6 @@ extern "C" {
 
 /***** START SECTION CONFIG *****/
 
-#include "janetconf.h"
-
 #ifndef JANET_VERSION
 #define JANET_VERSION "latest"
 #endif
@@ -127,6 +127,12 @@ extern "C" {
 #define JANET_LITTLE_ENDIAN 1
 #endif
 
+/* Limits for converting doubles to 64 bit integers */
+#define JANET_INTMAX_DOUBLE 9007199254740992.0
+#define JANET_INTMIN_DOUBLE (-9007199254740992.0)
+#define JANET_INTMAX_INT64 9007199254740992
+#define JANET_INTMIN_INT64 (-9007199254740992)
+
 /* Check emscripten */
 #ifdef __EMSCRIPTEN__
 #define JANET_NO_DYNAMIC_MODULES
@@ -139,16 +145,17 @@ extern "C" {
 #endif
 
 /* Define how global janet state is declared */
+/* Also enable the thread library only if not single-threaded */
 #ifdef JANET_SINGLE_THREADED
 #define JANET_THREAD_LOCAL
+#undef JANET_THREADS
 #elif defined(__GNUC__)
 #define JANET_THREAD_LOCAL __thread
-#define JANET_THREADS
 #elif defined(_MSC_BUILD)
 #define JANET_THREAD_LOCAL __declspec(thread)
-#define JANET_THREADS
 #else
 #define JANET_THREAD_LOCAL
+#undef JANET_THREADS
 #endif
 
 /* Enable or disable dynamic module loading. Enabled by default. */
@@ -166,13 +173,13 @@ extern "C" {
 #define JANET_PEG
 #endif
 
-/* Enable or disable the typedarray module */
-#ifndef JANET_NO_TYPED_ARRAY
-#define JANET_TYPED_ARRAY
+/* Enable or disable event loop */
+#if !defined(JANET_NO_EV) && !defined(__EMSCRIPTEN__)
+#define JANET_EV
 #endif
 
 /* Enable or disable networking */
-#if !defined(JANET_NO_NET) && !defined(__EMSCRIPTEN__)
+#if defined(JANET_EV) && !defined(JANET_NO_NET) && !defined(__EMSCRIPTEN__)
 #define JANET_NET
 #endif
 
@@ -181,6 +188,21 @@ extern "C" {
 #define JANET_INT_TYPES
 #endif
 
+/* Enable or disable epoll on Linux */
+#if defined(JANET_LINUX) && !defined(JANET_EV_NO_EPOLL)
+#define JANET_EV_EPOLL
+#endif
+
+/* Enable or disable kqueue on BSD */
+#if defined(JANET_BSD) && !defined(JANET_EV_NO_KQUEUE)
+#define JANET_EV_KQUEUE
+#endif
+
+/* Enable or disable kqueue on Apple */
+#if defined(JANET_APPLE) && !defined(JANET_EV_NO_KQUEUE)
+#define JANET_EV_KQUEUE
+#endif
+
 /* How to export symbols */
 #ifndef JANET_API
 #ifdef JANET_WINDOWS
@@ -195,7 +217,7 @@ extern "C" {
 #ifdef JANET_WINDOWS
 #define JANET_NO_RETURN __declspec(noreturn)
 #else
-#define JANET_NO_RETURN __attribute__ ((noreturn))
+#define JANET_NO_RETURN __attribute__((noreturn))
 #endif
 #endif
 
@@ -219,6 +241,11 @@ extern "C" {
  * To turn of nanboxing, for debugging purposes or for certain
  * architectures (Nanboxing only tested on x86 and x64), comment out
  * the JANET_NANBOX define.*/
+
+#if defined(_M_ARM64) || defined(_M_ARM) || defined(__aarch64__)
+#define JANET_NO_NANBOX
+#endif
+
 #ifndef JANET_NO_NANBOX
 #ifdef JANET_32
 #define JANET_NANBOX_32
@@ -256,20 +283,37 @@ typedef struct {
 } JanetBuildConfig;
 
 /* Get config of current compilation unit. */
+#ifdef __cplusplus
+/* C++11 syntax */
+#define janet_config_current() (JanetBuildConfig { \
+    JANET_VERSION_MAJOR, \
+    JANET_VERSION_MINOR, \
+    JANET_VERSION_PATCH, \
+    JANET_CURRENT_CONFIG_BITS })
+#else
+/* C99 syntax */
 #define janet_config_current() ((JanetBuildConfig){ \
     JANET_VERSION_MAJOR, \
     JANET_VERSION_MINOR, \
     JANET_VERSION_PATCH, \
     JANET_CURRENT_CONFIG_BITS })
+#endif
+
+/* What to do when out of memory */
+#ifndef JANET_OUT_OF_MEMORY
+#include <stdio.h>
+#define JANET_OUT_OF_MEMORY do { fprintf(stderr, "janet out of memory\n"); exit(1); } while (0)
+#endif
 
 /***** END SECTION CONFIG *****/
 
 /***** START SECTION TYPES *****/
 
 #ifdef JANET_WINDOWS
-// Must be defined before including stdlib.h
+/* Must be defined before including stdlib.h */
 #define _CRT_RAND_S
 #endif
+
 #include <stdlib.h>
 #include <stdint.h>
 #include <string.h>
@@ -278,6 +322,25 @@ typedef struct {
 #include <stddef.h>
 #include <stdio.h>
 
+/* Some extra includes if EV is enabled */
+#ifdef JANET_EV
+#ifdef JANET_WINDOWS
+typedef struct JanetDudCriticalSection {
+    /* Avoid including windows.h here - instead, create a structure of the same size */
+    /* Needs to be same size as crtical section see WinNT.h for CRITCIAL_SECTION definition */
+    void *debug_info;
+    long lock_count;
+    long recursion_count;
+    void *owning_thread;
+    void *lock_semaphore;
+    unsigned long spin_count;
+} JanetOSMutex;
+#else
+#include <pthread.h>
+typedef pthread_mutex_t JanetOSMutex;
+#endif
+#endif
+
 #ifdef JANET_BSD
 int _setjmp(jmp_buf);
 JANET_NO_RETURN void _longjmp(jmp_buf, int);
@@ -288,6 +351,15 @@ JANET_API extern const char *const janet_type_names[16];
 JANET_API extern const char *const janet_signal_names[14];
 JANET_API extern const char *const janet_status_names[16];
 
+/* For various IO routines, we want to use an int on posix and HANDLE on windows */
+#ifdef JANET_WINDOWS
+typedef void *JanetHandle;
+#define JANET_HANDLE_NONE NULL
+#else
+typedef int JanetHandle;
+#define JANET_HANDLE_NONE (-1)
+#endif
+
 /* Fiber signals */
 typedef enum {
     JANET_SIGNAL_OK,
@@ -307,6 +379,7 @@ typedef enum {
 } JanetSignal;
 
 #define JANET_SIGNAL_EVENT JANET_SIGNAL_USER9
+#define JANET_SIGNAL_INTERRUPT JANET_SIGNAL_USER8
 
 /* Fiber statuses - mostly corresponds to signals. */
 typedef enum {
@@ -328,6 +401,9 @@ typedef enum {
     JANET_STATUS_ALIVE
 } JanetFiberStatus;
 
+/* For encapsulating all thread-local Janet state (except natives) */
+typedef struct JanetVM JanetVM;
+
 /* Use type punning for GC objects */
 typedef struct JanetGCObject JanetGCObject;
 
@@ -351,6 +427,7 @@ typedef struct JanetKV JanetKV;
 typedef struct JanetStackFrame JanetStackFrame;
 typedef struct JanetAbstractType JanetAbstractType;
 typedef struct JanetReg JanetReg;
+typedef struct JanetRegExt JanetRegExt;
 typedef struct JanetMethod JanetMethod;
 typedef struct JanetSourceMapping JanetSourceMapping;
 typedef struct JanetView JanetView;
@@ -461,6 +538,75 @@ typedef void *JanetAbstract;
 #define JANET_TFLAG_CALLABLE (JANET_TFLAG_FUNCTION | JANET_TFLAG_CFUNCTION | \
         JANET_TFLAG_LENGTHABLE | JANET_TFLAG_ABSTRACT)
 
+/* Event Loop Types */
+#ifdef JANET_EV
+
+#define JANET_STREAM_CLOSED 0x1
+#define JANET_STREAM_SOCKET 0x2
+#define JANET_STREAM_IOCP 0x4
+#define JANET_STREAM_READABLE 0x200
+#define JANET_STREAM_WRITABLE 0x400
+#define JANET_STREAM_ACCEPTABLE 0x800
+#define JANET_STREAM_UDPSERVER 0x1000
+
+typedef enum {
+    JANET_ASYNC_EVENT_INIT,
+    JANET_ASYNC_EVENT_MARK,
+    JANET_ASYNC_EVENT_DEINIT,
+    JANET_ASYNC_EVENT_CLOSE,
+    JANET_ASYNC_EVENT_ERR,
+    JANET_ASYNC_EVENT_HUP,
+    JANET_ASYNC_EVENT_READ,
+    JANET_ASYNC_EVENT_WRITE,
+    JANET_ASYNC_EVENT_CANCEL,
+    JANET_ASYNC_EVENT_COMPLETE, /* Used on windows for IOCP */
+    JANET_ASYNC_EVENT_USER
+} JanetAsyncEvent;
+
+#define JANET_ASYNC_LISTEN_READ (1 << JANET_ASYNC_EVENT_READ)
+#define JANET_ASYNC_LISTEN_WRITE (1 << JANET_ASYNC_EVENT_WRITE)
+
+typedef enum {
+    JANET_ASYNC_STATUS_NOT_DONE,
+    JANET_ASYNC_STATUS_DONE
+} JanetAsyncStatus;
+
+/* Typedefs */
+typedef struct JanetListenerState JanetListenerState;
+typedef struct JanetStream JanetStream;
+typedef JanetAsyncStatus(*JanetListener)(JanetListenerState *state, JanetAsyncEvent event);
+
+/* Wrapper around file descriptors and HANDLEs that can be polled. */
+struct JanetStream {
+    JanetHandle handle;
+    uint32_t flags;
+    /* Linked list of all in-flight IO routines for this stream */
+    JanetListenerState *state;
+    const void *methods; /* Methods for this stream */
+    /* internal - used to disallow multiple concurrent reads / writes on the same stream.
+     * this constraint may be lifted later but allowing such would require more internal book keeping
+     * for some implementations. You can read and write at the same time on the same stream, though. */
+    int _mask;
+};
+
+/* Interface for state machine based event loop */
+struct JanetListenerState {
+    JanetListener machine;
+    JanetFiber *fiber;
+    JanetStream *stream;
+    void *event; /* Used to pass data from asynchronous IO event. Contents depend on both
+                    implementation of the event loop and the particular event. */
+#ifdef JANET_WINDOWS
+    void *tag; /* Used to associate listeners with an overlapped structure */
+    int bytes; /* Used to track how many bytes were transfered. */
+#endif
+    /* internal */
+    size_t _index;
+    int _mask;
+    JanetListenerState *_next;
+};
+#endif
+
 /* We provide three possible implementations of Janets. The preferred
  * nanboxing approach, for 32 or 64 bits, and the standard C version. Code in the rest of the
  * application must interact through exposed interface. */
@@ -550,14 +696,14 @@ JANET_API Janet janet_wrap_integer(int32_t x);
 #define janet_nanbox_tag(type) (janet_nanbox_lowtag(type) << 47)
 #define janet_type(x) \
     (isnan((x).number) \
-        ? (((x).u64 >> 47) & 0xF) \
+        ? (JanetType) (((x).u64 >> 47) & 0xF) \
         : JANET_NUMBER)
 
 #define janet_nanbox_checkauxtype(x, type) \
     (((x).u64 & JANET_NANBOX_TAGBITS) == janet_nanbox_tag((type)))
 
 #define janet_nanbox_isnumber(x) \
-    (!isnan((x).number) || janet_nanbox_checkauxtype((x), JANET_NUMBER))
+    (!isnan((x).number) || ((((x).u64 >> 47) & 0xF) == JANET_NUMBER))
 
 #define janet_checktype(x, t) \
     (((t) == JANET_NUMBER) \
@@ -629,7 +775,7 @@ JANET_API Janet janet_nanbox_from_bits(uint64_t bits);
 #define JANET_DOUBLE_OFFSET 0xFFFF
 
 #define janet_u64(x) ((x).u64)
-#define janet_type(x) (((x).tagged.type < JANET_DOUBLE_OFFSET) ? (x).tagged.type : JANET_NUMBER)
+#define janet_type(x) (((x).tagged.type < JANET_DOUBLE_OFFSET) ? (JanetType)((x).tagged.type) : JANET_NUMBER)
 #define janet_checktype(x, t) ((t) == JANET_NUMBER \
         ? (x).tagged.type >= JANET_DOUBLE_OFFSET \
         : (x).tagged.type == (t))
@@ -706,7 +852,7 @@ JANET_API int janet_checkint64(Janet x);
 JANET_API int janet_checksize(Janet x);
 JANET_API JanetAbstract janet_checkabstract(Janet x, const JanetAbstractType *at);
 #define janet_checkintrange(x) ((x) >= INT32_MIN && (x) <= INT32_MAX && (x) == (int32_t)(x))
-#define janet_checkint64range(x) ((x) >= INT64_MIN && (x) <= INT64_MAX && (x) == (int64_t)(x))
+#define janet_checkint64range(x) ((x) >= JANET_INTMIN_DOUBLE && (x) <= JANET_INTMAX_DOUBLE && (x) == (int64_t)(x))
 #define janet_unwrap_integer(x) ((int32_t) janet_unwrap_number(x))
 #define janet_wrap_integer(x) janet_wrap_number((int32_t)(x))
 
@@ -717,7 +863,10 @@ JANET_API JanetAbstract janet_checkabstract(Janet x, const JanetAbstractType *at
  * list of blocks, which is naive but works. */
 struct JanetGCObject {
     int32_t flags;
-    JanetGCObject *next;
+    union {
+        JanetGCObject *next;
+        int32_t refcount; /* For threaded abstract types */
+    } data;
 };
 
 /* A lightweight green thread in janet. Does not correspond to
@@ -728,11 +877,21 @@ struct JanetFiber {
     int32_t frame; /* Index of the stack frame */
     int32_t stackstart; /* Beginning of next args */
     int32_t stacktop; /* Top of stack. Where values are pushed and popped from. */
-    int32_t capacity;
+    int32_t capacity; /* How big is the stack memory */
     int32_t maxstack; /* Arbitrary defined limit for stack overflow */
     JanetTable *env; /* Dynamic bindings table (usually current environment). */
-    Janet *data;
+    Janet *data; /* Dynamically resized stack memory */
     JanetFiber *child; /* Keep linked list of fibers for restarting pending fibers */
+    Janet last_value; /* Last returned value from a fiber */
+#ifdef JANET_EV
+    /* These fields are only relevant for fibers that are used as "root fibers" -
+     * that is, fibers that are scheduled on the event loop and behave much like threads
+     * in a multi-tasking system. It would be possible to move these fields to a new
+     * type, say "JanetTask", that as separate from fibers to save a bit of space. */
+    JanetListenerState *waiting;
+    uint32_t sched_id; /* Increment everytime fiber is scheduled by event loop */
+    void *supervisor_channel; /* Channel to push self to when complete */
+#endif
 };
 
 /* Mark if a stack frame is a tail call for debugging */
@@ -802,6 +961,7 @@ struct JanetStructHead {
     int32_t length;
     int32_t hash;
     int32_t capacity;
+    const JanetKV *proto;
     const JanetKV data[];
 };
 
@@ -962,6 +1122,14 @@ struct JanetReg {
     const char *documentation;
 };
 
+struct JanetRegExt {
+    const char *name;
+    JanetCFunction cfun;
+    const char *documentation;
+    const char *source_file;
+    int32_t source_line;
+};
+
 struct JanetMethod {
     const char *name;
     JanetCFunction cfun;
@@ -996,9 +1164,22 @@ struct JanetRNG {
 typedef struct JanetFile JanetFile;
 struct JanetFile {
     FILE *file;
-    int flags;
+    int32_t flags;
 };
 
+/* For janet_try and janet_restore */
+typedef struct {
+    /* old state */
+    int32_t stackn;
+    int gc_handle;
+    JanetFiber *vm_fiber;
+    jmp_buf *vm_jmp_buf;
+    Janet *vm_return_reg;
+    /* new state */
+    jmp_buf buf;
+    Janet payload;
+} JanetTryState;
+
 /* Thread types */
 #ifdef JANET_THREADS
 typedef struct JanetThread JanetThread;
@@ -1118,6 +1299,9 @@ enum JanetOpCode {
     JOP_GREATER_THAN_EQUAL,
     JOP_LESS_THAN_EQUAL,
     JOP_NEXT,
+    JOP_NOT_EQUALS,
+    JOP_NOT_EQUALS_IMMEDIATE,
+    JOP_CANCEL,
     JOP_INSTRUCTION_COUNT
 };
 
@@ -1128,9 +1312,152 @@ extern enum JanetInstructionType janet_instructions[JOP_INSTRUCTION_COUNT];
 
 /***** START SECTION MAIN *****/
 
-/* Event Loop */
-#ifdef JANET_NET
+#ifdef JANET_EV
+
+extern JANET_API const JanetAbstractType janet_stream_type;
+extern JANET_API const JanetAbstractType janet_channel_type;
+
+/* Run the event loop */
 JANET_API void janet_loop(void);
+
+/* Run the event loop, but allow for user scheduled interrupts triggered
+ * by janet_loop1_interrupt being called in library code, a signal handler, or
+ * another thread.
+ *
+ * Example:
+ *
+ * while (!janet_loop_done()) {
+ *   // One turn of the event loop
+ *   JanetFiber *interrupted_fiber = janet_loop1();
+ *   // interrupted_fiber may be NULL
+ *   // do some work here periodically...
+ *   if (NULL != interrupted_fiber) {
+ *     if (cancel_interrupted_fiber) {
+ *       janet_cancel(interrupted_fiber, janet_cstringv("fiber was interrupted for [reason]"));
+ *     } else {
+ *       janet_schedule(interrupted_fiber, janet_wrap_nil());
+ *     }
+ *   }
+ * }
+ *
+ */
+JANET_API int janet_loop_done(void);
+JANET_API JanetFiber *janet_loop1(void);
+JANET_API void janet_loop1_interrupt(JanetVM *vm);
+
+/* Wrapper around streams */
+JANET_API JanetStream *janet_stream(JanetHandle handle, uint32_t flags, const JanetMethod *methods);
+JANET_API void janet_stream_close(JanetStream *stream);
+JANET_API Janet janet_cfun_stream_close(int32_t argc, Janet *argv);
+JANET_API Janet janet_cfun_stream_read(int32_t argc, Janet *argv);
+JANET_API Janet janet_cfun_stream_chunk(int32_t argc, Janet *argv);
+JANET_API Janet janet_cfun_stream_write(int32_t argc, Janet *argv);
+JANET_API void janet_stream_flags(JanetStream *stream, uint32_t flags);
+
+/* Queue a fiber to run on the event loop */
+JANET_API void janet_schedule(JanetFiber *fiber, Janet value);
+JANET_API void janet_cancel(JanetFiber *fiber, Janet value);
+JANET_API void janet_schedule_signal(JanetFiber *fiber, Janet value, JanetSignal sig);
+
+/* Start a state machine listening for events from a stream */
+JANET_API JanetListenerState *janet_listen(JanetStream *stream, JanetListener behavior, int mask, size_t size, void *user);
+
+/* Shorthand for yielding to event loop in C */
+JANET_NO_RETURN JANET_API void janet_await(void);
+JANET_NO_RETURN JANET_API void janet_sleep_await(double sec);
+
+/* For use inside listeners - adds a timeout to the current fiber, such that
+ * it will be resumed after sec seconds if no other event schedules the current fiber. */
+JANET_API void janet_addtimeout(double sec);
+JANET_API void janet_ev_inc_refcount(void);
+JANET_API void janet_ev_dec_refcount(void);
+
+/* Thread aware abstract types and helpers */
+JANET_API void *janet_abstract_begin_threaded(const JanetAbstractType *atype, size_t size);
+JANET_API void *janet_abstract_end_threaded(void *x);
+JANET_API void *janet_abstract_threaded(const JanetAbstractType *atype, size_t size);
+JANET_API int32_t janet_abstract_incref(void *abst);
+JANET_API int32_t janet_abstract_decref(void *abst);
+
+/* Expose some OS sync primitives to make portable abstract types easier to implement */
+JANET_API void janet_os_mutex_init(JanetOSMutex *mutex);
+JANET_API void janet_os_mutex_deinit(JanetOSMutex *mutex);
+JANET_API void janet_os_mutex_lock(JanetOSMutex *mutex);
+JANET_API void janet_os_mutex_unlock(JanetOSMutex *mutex);
+
+/* Get last error from an IO operation */
+JANET_API Janet janet_ev_lasterr(void);
+
+/* Async service for calling a function or syscall in a background thread. This is not
+ * as efficient in the slightest as using Streams but can be used for arbitrary blocking
+ * functions and syscalls. */
+
+/* Used to pass data between the main thread and worker threads for simple tasks.
+ * We could just use a pointer but this prevents malloc/free in the common case
+ * of only a handful of arguments. */
+typedef struct {
+    int tag;
+    int argi;
+    void *argp;
+    Janet argj;
+    JanetFiber *fiber;
+} JanetEVGenericMessage;
+
+/* How to resume or cancel after a threaded call. Not exhaustive of the possible
+ * ways one might want to resume after returning from a threaded call, but should
+ * cover most of the common cases. For something more complicated, such as resuming
+ * with an abstract type or a struct, one should use janet_ev_threaded_call instead
+ * of janet_ev_threaded_await with a custom callback. */
+
+#define JANET_EV_TCTAG_NIL 0          /* resume with nil */
+#define JANET_EV_TCTAG_INTEGER 1      /* resume with janet_wrap_integer(argi) */
+#define JANET_EV_TCTAG_STRING 2       /* resume with janet_cstringv((const char *) argp) */
+#define JANET_EV_TCTAG_STRINGF 3      /* resume with janet_cstringv((const char *) argp), then call free on argp. */
+#define JANET_EV_TCTAG_KEYWORD 4      /* resume with janet_ckeywordv((const char *) argp) */
+#define JANET_EV_TCTAG_ERR_STRING 5   /* cancel with janet_cstringv((const char *) argp) */
+#define JANET_EV_TCTAG_ERR_STRINGF 6  /* cancel with janet_cstringv((const char *) argp), then call free on argp. */
+#define JANET_EV_TCTAG_ERR_KEYWORD 7  /* cancel with janet_ckeywordv((const char *) argp) */
+#define JANET_EV_TCTAG_BOOLEAN 8      /* resume with janet_wrap_boolean(argi) */
+
+/* Function pointer that is run in the thread pool */
+typedef JanetEVGenericMessage(*JanetThreadedSubroutine)(JanetEVGenericMessage arguments);
+
+/* Handler for events posted to the event loop */
+typedef void (*JanetCallback)(JanetEVGenericMessage return_value);
+
+/* Handler that is run in the main thread with the result of the JanetAsyncSubroutine (same as JanetCallback) */
+typedef void (*JanetThreadedCallback)(JanetEVGenericMessage return_value);
+
+/* API calls for quickly offloading some work in C to a new thread or thread pool. */
+JANET_API void janet_ev_threaded_call(JanetThreadedSubroutine fp, JanetEVGenericMessage arguments, JanetThreadedCallback cb);
+JANET_NO_RETURN JANET_API void janet_ev_threaded_await(JanetThreadedSubroutine fp, int tag, int argi, void *argp);
+
+/* Post callback + userdata to an event loop. Takes the vm parameter to allow posting from other
+ * threads or signal handlers. Use NULL to post to the current thread. */
+JANET_API void janet_ev_post_event(JanetVM *vm, JanetCallback cb, JanetEVGenericMessage msg);
+
+/* Callback used by janet_ev_threaded_await */
+JANET_API void janet_ev_default_threaded_callback(JanetEVGenericMessage return_value);
+
+/* Read async from a stream */
+JANET_API void janet_ev_read(JanetStream *stream, JanetBuffer *buf, int32_t nbytes);
+JANET_API void janet_ev_readchunk(JanetStream *stream, JanetBuffer *buf, int32_t nbytes);
+#ifdef JANET_NET
+JANET_API void janet_ev_recv(JanetStream *stream, JanetBuffer *buf, int32_t nbytes, int flags);
+JANET_API void janet_ev_recvchunk(JanetStream *stream, JanetBuffer *buf, int32_t nbytes, int flags);
+JANET_API void janet_ev_recvfrom(JanetStream *stream, JanetBuffer *buf, int32_t nbytes, int flags);
+#endif
+
+/* Write async to a stream */
+JANET_API void janet_ev_write_buffer(JanetStream *stream, JanetBuffer *buf);
+JANET_API void janet_ev_write_string(JanetStream *stream, JanetString str);
+#ifdef JANET_NET
+JANET_API void janet_ev_send_buffer(JanetStream *stream, JanetBuffer *buf, int flags);
+JANET_API void janet_ev_send_string(JanetStream *stream, JanetString str, int flags);
+JANET_API void janet_ev_sendto_buffer(JanetStream *stream, JanetBuffer *buf, void *dest, int flags);
+JANET_API void janet_ev_sendto_string(JanetStream *stream, JanetString str, void *dest, int flags);
+#endif
+
 #endif
 
 /* Parsing */
@@ -1140,6 +1467,7 @@ JANET_API void janet_parser_deinit(JanetParser *parser);
 JANET_API void janet_parser_consume(JanetParser *parser, uint8_t c);
 JANET_API enum JanetParserStatus janet_parser_status(JanetParser *parser);
 JANET_API Janet janet_parser_produce(JanetParser *parser);
+JANET_API Janet janet_parser_produce_wrapped(JanetParser *parser);
 JANET_API const char *janet_parser_error(JanetParser *parser);
 JANET_API void janet_parser_flush(JanetParser *parser);
 JANET_API void janet_parser_eof(JanetParser *parser);
@@ -1176,15 +1504,26 @@ struct JanetCompileResult {
     enum JanetCompileStatus status;
 };
 JANET_API JanetCompileResult janet_compile(Janet source, JanetTable *env, JanetString where);
+JANET_API JanetCompileResult janet_compile_lint(
+    Janet source,
+    JanetTable *env,
+    JanetString where,
+    JanetArray *lints);
 
 /* Get the default environment for janet */
 JANET_API JanetTable *janet_core_env(JanetTable *replacements);
+JANET_API JanetTable *janet_core_lookup_table(JanetTable *replacements);
 
+/* Execute strings */
 JANET_API int janet_dobytes(JanetTable *env, const uint8_t *bytes, int32_t len, const char *sourcePath, Janet *out);
 JANET_API int janet_dostring(JanetTable *env, const char *str, const char *sourcePath, Janet *out);
 
+/* Run the entrypoint of a wrapped program */
+JANET_API int janet_loop_fiber(JanetFiber *fiber);
+
 /* Number scanning */
 JANET_API int janet_scan_number(const uint8_t *str, int32_t len, double *out);
+JANET_API int janet_scan_number_base(const uint8_t *str, int32_t len, int32_t base, double *out);
 JANET_API int janet_scan_int64(const uint8_t *str, int32_t len, int64_t *out);
 JANET_API int janet_scan_uint64(const uint8_t *str, int32_t len, uint64_t *out);
 
@@ -1201,6 +1540,7 @@ JANET_API JanetRNG *janet_default_rng(void);
 JANET_API void janet_rng_seed(JanetRNG *rng, uint32_t seed);
 JANET_API void janet_rng_longseed(JanetRNG *rng, const uint8_t *bytes, int32_t len);
 JANET_API uint32_t janet_rng_u32(JanetRNG *rng);
+JANET_API double janet_rng_double(JanetRNG *rng);
 
 /* Array functions */
 JANET_API JanetArray *janet_array(int32_t capacity);
@@ -1281,16 +1621,20 @@ JANET_API JanetSymbol janet_symbol_gen(void);
 #define janet_struct_length(t) (janet_struct_head(t)->length)
 #define janet_struct_capacity(t) (janet_struct_head(t)->capacity)
 #define janet_struct_hash(t) (janet_struct_head(t)->hash)
+#define janet_struct_proto(t) (janet_struct_head(t)->proto)
 JANET_API JanetKV *janet_struct_begin(int32_t count);
 JANET_API void janet_struct_put(JanetKV *st, Janet key, Janet value);
 JANET_API JanetStruct janet_struct_end(JanetKV *st);
 JANET_API Janet janet_struct_get(JanetStruct st, Janet key);
+JANET_API Janet janet_struct_rawget(JanetStruct st, Janet key);
+JANET_API Janet janet_struct_get_ex(JanetStruct st, Janet key, JanetStruct *which);
 JANET_API JanetTable *janet_struct_to_table(JanetStruct st);
 JANET_API const JanetKV *janet_struct_find(JanetStruct st, Janet key);
 
 /* Table functions */
 JANET_API JanetTable *janet_table(int32_t capacity);
 JANET_API JanetTable *janet_table_init(JanetTable *table, int32_t capacity);
+JANET_API JanetTable *janet_table_init_raw(JanetTable *table, int32_t capacity);
 JANET_API void janet_table_deinit(JanetTable *table);
 JANET_API Janet janet_table_get(JanetTable *t, Janet key);
 JANET_API Janet janet_table_get_ex(JanetTable *t, Janet key, JanetTable **which);
@@ -1302,6 +1646,7 @@ JANET_API void janet_table_merge_table(JanetTable *table, JanetTable *other);
 JANET_API void janet_table_merge_struct(JanetTable *table, JanetStruct other);
 JANET_API JanetKV *janet_table_find(JanetTable *t, Janet key);
 JANET_API JanetTable *janet_table_clone(JanetTable *table);
+JANET_API void janet_table_clear(JanetTable *table);
 
 /* Fiber */
 JANET_API JanetFiber *janet_fiber(JanetFunction *callee, int32_t capacity, int32_t argc, const Janet *argv);
@@ -1372,10 +1717,17 @@ JANET_API int janet_verify(JanetFuncDef *def);
 JANET_API JanetBuffer *janet_pretty(JanetBuffer *buffer, int depth, int flags, Janet x);
 
 /* Misc */
-#ifndef JANET_NO_PRF
+#ifdef JANET_PRF
 #define JANET_HASH_KEY_SIZE 16
 JANET_API void janet_init_hash_key(uint8_t key[JANET_HASH_KEY_SIZE]);
 #endif
+JANET_API void janet_try_init(JanetTryState *state);
+#if defined(JANET_BSD) || defined(JANET_APPLE)
+#define janet_try(state) (janet_try_init(state), (JanetSignal) _setjmp((state)->buf))
+#else
+#define janet_try(state) (janet_try_init(state), (JanetSignal) setjmp((state)->buf))
+#endif
+JANET_API void janet_restore(JanetTryState *state);
 JANET_API int janet_equals(Janet x, Janet y);
 JANET_API int32_t janet_hash(Janet x);
 JANET_API int janet_compare(Janet x, Janet y);
@@ -1393,16 +1745,25 @@ JANET_API Janet janet_wrap_number_safe(double x);
 JANET_API int janet_keyeq(Janet x, const char *cstring);
 JANET_API int janet_streq(Janet x, const char *cstring);
 JANET_API int janet_symeq(Janet x, const char *cstring);
+JANET_API int32_t janet_sorted_keys(const JanetKV *dict, int32_t cap, int32_t *index_buffer);
 
 /* VM functions */
 JANET_API int janet_init(void);
 JANET_API void janet_deinit(void);
+JANET_API JanetVM *janet_vm_alloc(void);
+JANET_API JanetVM *janet_local_vm(void);
+JANET_API void janet_vm_free(JanetVM *vm);
+JANET_API void janet_vm_save(JanetVM *into);
+JANET_API void janet_vm_load(JanetVM *from);
+JANET_API void janet_interpreter_interrupt(JanetVM *vm);
 JANET_API JanetSignal janet_continue(JanetFiber *fiber, Janet in, Janet *out);
+JANET_API JanetSignal janet_continue_signal(JanetFiber *fiber, Janet in, Janet *out, JanetSignal sig);
 JANET_API JanetSignal janet_pcall(JanetFunction *fun, int32_t argn, const Janet *argv, Janet *out, JanetFiber **f);
 JANET_API JanetSignal janet_step(JanetFiber *fiber, Janet in, Janet *out);
 JANET_API Janet janet_call(JanetFunction *fun, int32_t argc, const Janet *argv);
 JANET_API Janet janet_mcall(const char *name, int32_t argc, Janet *argv);
 JANET_API void janet_stacktrace(JanetFiber *fiber, Janet err);
+JANET_API void janet_stacktrace_ext(JanetFiber *fiber, Janet err, const char *prefix);
 
 /* Scratch Memory API */
 typedef void (*JanetScratchFinalizer)(void *);
@@ -1420,26 +1781,111 @@ typedef enum {
     JANET_BINDING_VAR,
     JANET_BINDING_MACRO
 } JanetBindingType;
+
+typedef struct {
+    JanetBindingType type;
+    Janet value;
+    enum {
+        JANET_BINDING_DEP_NONE,
+        JANET_BINDING_DEP_RELAXED,
+        JANET_BINDING_DEP_NORMAL,
+        JANET_BINDING_DEP_STRICT,
+    } deprecation;
+} JanetBinding;
+
 JANET_API void janet_def(JanetTable *env, const char *name, Janet val, const char *documentation);
 JANET_API void janet_var(JanetTable *env, const char *name, Janet val, const char *documentation);
 JANET_API void janet_cfuns(JanetTable *env, const char *regprefix, const JanetReg *cfuns);
+JANET_API void janet_cfuns_prefix(JanetTable *env, const char *regprefix, const JanetReg *cfuns);
 JANET_API JanetBindingType janet_resolve(JanetTable *env, JanetSymbol sym, Janet *out);
-JANET_API void janet_register(const char *name, JanetCFunction cfun);
+JANET_API JanetBinding janet_resolve_ext(JanetTable *env, JanetSymbol sym);
 
 /* Get values from the core environment. */
 JANET_API Janet janet_resolve_core(const char *name);
 
 /* New C API */
 
+/* Shorthand for janet C function declarations */
+#define JANET_CFUN(name) Janet name (int32_t argc, Janet *argv)
+
+/* Declare a C function with documentation and source mapping */
+#define JANET_REG_END {NULL, NULL, NULL, NULL, 0}
+
+/* no docstrings or sourcemaps */
+#define JANET_REG_(JNAME, CNAME) {JNAME, CNAME, NULL, NULL, 0}
+#define JANET_FN_(CNAME, USAGE, DOCSTRING) \
+    Janet CNAME (int32_t argc, Janet *argv)
+#define JANET_DEF_(ENV, JNAME, VAL, DOC) \
+    janet_def(ENV, JNAME, VAL, NULL)
+
+/* sourcemaps only */
+#define JANET_REG_S(JNAME, CNAME) {JNAME, CNAME, NULL, __FILE__, CNAME##_sourceline_}
+#define JANET_FN_S(CNAME, USAGE, DOCSTRING) \
+    static int32_t CNAME##_sourceline_ = __LINE__; \
+    Janet CNAME (int32_t argc, Janet *argv)
+#define JANET_DEF_S(ENV, JNAME, VAL, DOC) \
+    janet_def_sm(ENV, JNAME, VAL, NULL, __FILE__, __LINE__)
+
+/* docstring only */
+#define JANET_REG_D(JNAME, CNAME) {JNAME, CNAME, CNAME##_docstring_, NULL, 0}
+#define JANET_FN_D(CNAME, USAGE, DOCSTRING) \
+    static const char CNAME##_docstring_[] = USAGE "\n\n" DOCSTRING; \
+    Janet CNAME (int32_t argc, Janet *argv)
+#define JANET_DEF_D(ENV, JNAME, VAL, DOC) \
+    janet_def(ENV, JNAME, VAL, DOC)
+
+/* sourcemaps and docstrings */
+#define JANET_REG_SD(JNAME, CNAME) {JNAME, CNAME, CNAME##_docstring_, __FILE__, CNAME##_sourceline_}
+#define JANET_FN_SD(CNAME, USAGE, DOCSTRING) \
+    static int32_t CNAME##_sourceline_ = __LINE__; \
+    static const char CNAME##_docstring_[] = USAGE "\n\n" DOCSTRING; \
+    Janet CNAME (int32_t argc, Janet *argv)
+#define JANET_DEF_SD(ENV, JNAME, VAL, DOC) \
+    janet_def_sm(ENV, JNAME, VAL, DOC, __FILE__, __LINE__)
+
+
+/* Choose defaults for source mapping and docstring based on config defs */
+#if defined(JANET_NO_SOURCEMAPS) && defined(JANET_NO_DOCSTRINGS)
+#define JANET_REG JANET_REG_
+#define JANET_FN JANET_FN_
+#define JANET_DEF JANET_DEF_
+#elif defined(JANET_NO_SOURCEMAPS) && !defined(JANET_NO_DOCSTRINGS)
+#define JANET_REG JANET_REG_D
+#define JANET_FN JANET_FN_D
+#define JANET_DEF JANET_DEF_D
+#elif !defined(JANET_NO_SOURCEMAPS) && defined(JANET_NO_DOCSTRINGS)
+#define JANET_REG JANET_REG_S
+#define JANET_FN JANET_FN_S
+#define JANET_DEF JANET_DEF_S
+#elif !defined(JANET_NO_SOURCEMAPS) && !defined(JANET_NO_DOCSTRINGS)
+#define JANET_REG JANET_REG_SD
+#define JANET_FN JANET_FN_SD
+#define JANET_DEF JANET_DEF_SD
+#endif
+
+/* Define things with source mapping information */
+JANET_API void janet_cfuns_ext(JanetTable *env, const char *regprefix, const JanetRegExt *cfuns);
+JANET_API void janet_cfuns_ext_prefix(JanetTable *env, const char *regprefix, const JanetRegExt *cfuns);
+JANET_API void janet_def_sm(JanetTable *env, const char *name, Janet val, const char *documentation, const char *source_file, int32_t source_line);
+JANET_API void janet_var_sm(JanetTable *env, const char *name, Janet val, const char *documentation, const char *source_file, int32_t source_line);
+
+/* Legacy definition of C functions */
+JANET_API void janet_register(const char *name, JanetCFunction cfun);
+
 /* Allow setting entry name for static libraries */
+#ifdef __cplusplus
+#define JANET_MODULE_PREFIX extern "C"
+#else
+#define JANET_MODULE_PREFIX
+#endif
 #ifndef JANET_ENTRY_NAME
 #define JANET_MODULE_ENTRY \
-    JANET_API JanetBuildConfig _janet_mod_config(void) { \
+    JANET_MODULE_PREFIX JANET_API JanetBuildConfig _janet_mod_config(void) { \
         return janet_config_current(); \
     } \
-    JANET_API void _janet_init
+    JANET_MODULE_PREFIX JANET_API void _janet_init
 #else
-#define JANET_MODULE_ENTRY JANET_API void JANET_ENTRY_NAME
+#define JANET_MODULE_ENTRY JANET_MODULE_PREFIX JANET_API void JANET_ENTRY_NAME
 #endif
 
 JANET_NO_RETURN JANET_API void janet_signalv(JanetSignal signal, Janet message);
@@ -1456,6 +1902,7 @@ JANET_API void janet_arity(int32_t arity, int32_t min, int32_t max);
 JANET_API void janet_fixarity(int32_t arity, int32_t fix);
 
 JANET_API int janet_getmethod(JanetKeyword method, const JanetMethod *methods, Janet *out);
+JANET_API Janet janet_nextmethod(const JanetMethod *methods, Janet key);
 
 JANET_API double janet_getnumber(const Janet *argv, int32_t n);
 JANET_API JanetArray *janet_getarray(const Janet *argv, int32_t n);
@@ -1524,12 +1971,18 @@ extern JANET_API const JanetAbstractType janet_file_type;
 #define JANET_FILE_BINARY 64
 #define JANET_FILE_SERIALIZABLE 128
 #define JANET_FILE_PIPED 256
+#define JANET_FILE_NONIL 512
 
-JANET_API Janet janet_makefile(FILE *f, int flags);
-JANET_API FILE *janet_getfile(const Janet *argv, int32_t n, int *flags);
+JANET_API Janet janet_makefile(FILE *f, int32_t flags);
+JANET_API JanetFile *janet_makejfile(FILE *f, int32_t flags);
+JANET_API FILE *janet_getfile(const Janet *argv, int32_t n, int32_t *flags);
 JANET_API FILE *janet_dynfile(const char *name, FILE *def);
+JANET_API JanetFile *janet_getjfile(const Janet *argv, int32_t n);
 JANET_API JanetAbstract janet_checkfile(Janet j);
-JANET_API FILE *janet_unwrapfile(Janet j, int *flags);
+JANET_API FILE *janet_unwrapfile(Janet j, int32_t *flags);
+JANET_API int janet_file_close(JanetFile *file);
+
+JANET_API int janet_cryptorand(uint8_t *out, size_t n);
 
 /* Marshal API */
 JANET_API void janet_marshal_size(JanetMarshalContext *ctx, size_t value);
@@ -1548,6 +2001,7 @@ JANET_API uint8_t janet_unmarshal_byte(JanetMarshalContext *ctx);
 JANET_API void janet_unmarshal_bytes(JanetMarshalContext *ctx, uint8_t *dest, size_t len);
 JANET_API Janet janet_unmarshal_janet(JanetMarshalContext *ctx);
 JANET_API JanetAbstract janet_unmarshal_abstract(JanetMarshalContext *ctx, size_t size);
+JANET_API void janet_unmarshal_abstract_reuse(JanetMarshalContext *ctx, void *p);
 
 JANET_API void janet_register_abstract_type(const JanetAbstractType *at);
 JANET_API const JanetAbstractType *janet_get_abstract_type(Janet key);
@@ -1585,70 +2039,23 @@ typedef enum {
     RULE_TO,           /* [rule] */
     RULE_THRU,         /* [rule] */
     RULE_LENPREFIX,    /* [rule_a, rule_b (repeat rule_b rule_a times)] */
-} JanetPegOpcode;
+    RULE_READINT,      /* [(signedness << 4) | (endianess << 5) | bytewidth, tag] */
+    RULE_LINE,         /* [tag] */
+    RULE_COLUMN,       /* [tag] */
+    RULE_UNREF,        /* [rule, tag] */
+    RULE_CAPTURE_NUM   /* [rule, tag] */
+} JanetPegOpcod;
 
 typedef struct {
     uint32_t *bytecode;
     Janet *constants;
     size_t bytecode_len;
     uint32_t num_constants;
+    int has_backref;
 } JanetPeg;
 
 #endif
 
-#ifdef JANET_TYPED_ARRAY
-
-extern JANET_API const JanetAbstractType janet_ta_view_type;
-extern JANET_API const JanetAbstractType janet_ta_buffer_type;
-
-typedef enum {
-    JANET_TARRAY_TYPE_U8,
-    JANET_TARRAY_TYPE_S8,
-    JANET_TARRAY_TYPE_U16,
-    JANET_TARRAY_TYPE_S16,
-    JANET_TARRAY_TYPE_U32,
-    JANET_TARRAY_TYPE_S32,
-    JANET_TARRAY_TYPE_U64,
-    JANET_TARRAY_TYPE_S64,
-    JANET_TARRAY_TYPE_F32,
-    JANET_TARRAY_TYPE_F64
-} JanetTArrayType;
-
-typedef struct {
-    uint8_t *data;
-    size_t size;
-    int32_t flags;
-} JanetTArrayBuffer;
-
-typedef struct {
-    union {
-        void *pointer;
-        uint8_t *u8;
-        int8_t *s8;
-        uint16_t *u16;
-        int16_t *s16;
-        uint32_t *u32;
-        int32_t *s32;
-        uint64_t *u64;
-        int64_t *s64;
-        float *f32;
-        double *f64;
-    } as;
-    JanetTArrayBuffer *buffer;
-    size_t size;
-    size_t stride;
-    JanetTArrayType type;
-} JanetTArrayView;
-
-JANET_API JanetTArrayBuffer *janet_tarray_buffer(size_t size);
-JANET_API JanetTArrayView *janet_tarray_view(JanetTArrayType type, size_t size, size_t stride, size_t offset, JanetTArrayBuffer *buffer);
-JANET_API int janet_is_tarray_view(Janet x, JanetTArrayType type);
-JANET_API JanetTArrayBuffer *janet_gettarray_buffer(const Janet *argv, int32_t n);
-JANET_API JanetTArrayView *janet_gettarray_view(const Janet *argv, int32_t n, JanetTArrayType type);
-JanetTArrayView *janet_gettarray_any(const Janet *argv, int32_t n);
-
-#endif
-
 #ifdef JANET_INT_TYPES
 
 extern JANET_API const JanetAbstractType janet_s64_type;
@@ -1676,9 +2083,28 @@ extern JANET_API const JanetAbstractType janet_thread_type;
 
 JANET_API int janet_thread_receive(Janet *msg_out, double timeout);
 JANET_API int janet_thread_send(JanetThread *thread, Janet msg, double timeout);
+JANET_API JanetThread *janet_thread_current(void);
 
 #endif
 
+/* Custom allocator support */
+JANET_API void *(janet_malloc)(size_t);
+JANET_API void *(janet_realloc)(void *, size_t);
+JANET_API void *(janet_calloc)(size_t, size_t);
+JANET_API void (janet_free)(void *);
+#ifndef janet_malloc
+#define janet_malloc(X) malloc((X))
+#endif
+#ifndef janet_realloc
+#define janet_realloc(X, Y) realloc((X), (Y))
+#endif
+#ifndef janet_calloc
+#define janet_calloc(X, Y) calloc((X), (Y))
+#endif
+#ifndef janet_free
+#define janet_free(X) free((X))
+#endif
+
 /***** END SECTION MAIN *****/
 
 /* Re-enable popped variable length array warnings */

src/mainclient/shell.c

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2020 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
@@ -84,7 +84,7 @@ static void simpleline(JanetBuffer *buffer) {
 }
 
 /* Windows */
-#ifdef JANET_WINDOWS
+#if defined(JANET_WINDOWS) || defined(JANET_SIMPLE_GETLINE)
 
 void janet_line_init() {
     ;
@@ -136,7 +136,6 @@ static JANET_THREAD_LOCAL int gbl_cols = 80;
 static JANET_THREAD_LOCAL char *gbl_history[JANET_HISTORY_MAX];
 static JANET_THREAD_LOCAL int gbl_history_count = 0;
 static JANET_THREAD_LOCAL int gbl_historyi = 0;
-static JANET_THREAD_LOCAL int gbl_sigint_flag = 0;
 static JANET_THREAD_LOCAL struct termios gbl_termios_start;
 static JANET_THREAD_LOCAL JanetByteView gbl_matches[JANET_MATCH_MAX];
 static JANET_THREAD_LOCAL int gbl_match_count = 0;
@@ -152,7 +151,7 @@ static const char *badterms[] = {
 
 static char *sdup(const char *s) {
     size_t len = strlen(s) + 1;
-    char *mem = malloc(len);
+    char *mem = janet_malloc(len);
     if (!mem) {
         return NULL;
     }
@@ -170,7 +169,7 @@ static int rawmode(void) {
     t.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
     t.c_cc[VMIN] = 1;
     t.c_cc[VTIME] = 0;
-    if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &t) < 0) goto fatal;
+    if (tcsetattr(STDIN_FILENO, TCSADRAIN, &t) < 0) goto fatal;
     gbl_israwmode = 1;
     return 0;
 fatal:
@@ -180,7 +179,7 @@ fatal:
 
 /* Disable raw mode */
 static void norawmode(void) {
-    if (gbl_israwmode && tcsetattr(STDIN_FILENO, TCSAFLUSH, &gbl_termios_start) != -1)
+    if (gbl_israwmode && tcsetattr(STDIN_FILENO, TCSADRAIN, &gbl_termios_start) != -1)
         gbl_israwmode = 0;
 }
 
@@ -300,7 +299,7 @@ static int insert(char c, int draw) {
 
 static void historymove(int delta) {
     if (gbl_history_count > 1) {
-        free(gbl_history[gbl_historyi]);
+        janet_free(gbl_history[gbl_historyi]);
         gbl_history[gbl_historyi] = sdup(gbl_buf);
 
         gbl_historyi += delta;
@@ -326,7 +325,7 @@ static void addhistory(void) {
         gbl_history[gbl_history_count++] = newline;
         len++;
     } else {
-        free(gbl_history[JANET_HISTORY_MAX - 1]);
+        janet_free(gbl_history[JANET_HISTORY_MAX - 1]);
     }
     for (i = len - 1; i > 0; i--) {
         gbl_history[i] = gbl_history[i - 1];
@@ -338,7 +337,7 @@ static void replacehistory(void) {
     /* History count is always > 0 here */
     if (gbl_len == 0 || (gbl_history_count > 1 && !strcmp(gbl_buf, gbl_history[1]))) {
         /* Delete history */
-        free(gbl_history[0]);
+        janet_free(gbl_history[0]);
         for (int i = 1; i < gbl_history_count; i++) {
             gbl_history[i - 1] = gbl_history[i];
         }
@@ -346,7 +345,7 @@ static void replacehistory(void) {
     } else {
         char *newline = sdup(gbl_buf);
         if (!newline) return;
-        free(gbl_history[0]);
+        janet_free(gbl_history[0]);
         gbl_history[0] = newline;
     }
 }
@@ -747,7 +746,7 @@ static int line() {
 
         switch (c) {
             default:
-                if (c < 0x20) break;
+                if ((unsigned char) c < 0x20) break;
                 if (insert(c, 1)) return -1;
                 break;
             case 1:     /* ctrl-a */
@@ -758,6 +757,10 @@ static int line() {
                 kleft();
                 break;
             case 3:     /* ctrl-c */
+                norawmode();
+                kill(getpid(), SIGINT);
+            /* fallthrough */
+            case 17:    /* ctrl-q */
                 gbl_cancel_current_repl_form = 1;
                 clearlines();
                 return -1;
@@ -930,7 +933,7 @@ void janet_line_deinit() {
     int i;
     norawmode();
     for (i = 0; i < gbl_history_count; i++)
-        free(gbl_history[i]);
+        janet_free(gbl_history[i]);
     gbl_historyi = 0;
 }
 
@@ -958,11 +961,7 @@ void janet_line_get(const char *p, JanetBuffer *buffer) {
     }
     if (line()) {
         norawmode();
-        if (gbl_sigint_flag) {
-            raise(SIGINT);
-        } else {
-            fputc('\n', out);
-        }
+        fputc('\n', out);
         return;
     }
     fflush(stdin);
@@ -996,6 +995,27 @@ int main(int argc, char **argv) {
     SetConsoleOutputCP(65001);
 #endif
 
+#if !defined(JANET_WINDOWS) && !defined(JANET_SIMPLE_GETLINE)
+    /* Try and not leave the terminal in a bad state */
+    atexit(norawmode);
+#endif
+
+#if defined(JANET_PRF)
+    uint8_t hash_key[JANET_HASH_KEY_SIZE + 1];
+#ifdef JANET_REDUCED_OS
+    char *envvar = NULL;
+#else
+    char *envvar = getenv("JANET_HASHSEED");
+#endif
+    if (NULL != envvar) {
+        strncpy((char *) hash_key, envvar, sizeof(hash_key) - 1);
+    } else if (janet_cryptorand(hash_key, JANET_HASH_KEY_SIZE) != 0) {
+        fputs("unable to initialize janet PRF hash function.\n", stderr);
+        return 1;
+    }
+    janet_init_hash_key(hash_key);
+#endif
+
     /* Set up VM */
     janet_init();
 
@@ -1016,20 +1036,14 @@ int main(int argc, char **argv) {
     janet_table_put(env, janet_ckeywordv("executable"), janet_cstringv(argv[0]));
 
     /* Run startup script */
-    Janet mainfun, out;
+    Janet mainfun;
     janet_resolve(env, janet_csymbol("cli-main"), &mainfun);
     Janet mainargs[1] = { janet_wrap_array(args) };
     JanetFiber *fiber = janet_fiber(janet_unwrap_function(mainfun), 64, 1, mainargs);
     fiber->env = env;
-    status = janet_continue(fiber, janet_wrap_nil(), &out);
-    if (status != JANET_SIGNAL_OK && status != JANET_SIGNAL_EVENT) {
-        janet_stacktrace(fiber, out);
-    }
 
-#ifdef JANET_NET
-    status = JANET_SIGNAL_OK;
-    janet_loop();
-#endif
+    /* Run the fiber in an event loop */
+    status = janet_loop_fiber(fiber);
 
     /* Deinitialize vm */
     janet_deinit();