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Merge branch 'master' into net

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Calvin Rose 2020-03-07 13:34:13 -06:00
commit 90b3730a0a
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12
.builds/.freebsd.yaml
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@ -1,12 +0,0 @@
image: freebsd/latest
sources:
- https://git.sr.ht/~bakpakin/janet
packages:
- gmake
tasks:
- build: |
cd janet
gmake
gmake test
sudo gmake install
gmake test-install

12
.builds/.openbsd.yaml
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@ -1,12 +0,0 @@
image: openbsd/6.5
sources:
- https://git.sr.ht/~bakpakin/janet
packages:
- gmake
tasks:
- build: |
cd janet
gmake
gmake test
doas gmake install
gmake test-install

12
.builds/freebsd.yml Normal file
View File

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

12
.builds/openbsd.yml Normal file
View File

@ -0,0 +1,12 @@
image: openbsd/latest
sources:
- https://git.sr.ht/~bakpakin/janet
packages:
- gmake
tasks:
- build: |
cd janet
gmake
gmake test
doas gmake install
gmake test-install

6
CHANGELOG.md
View File

@ -2,6 +2,11 @@
All notable changes to this project will be documented in this file.
## Unreleased
- Allow `_` in the `match` macro to match anything without creating a binding
or doing unification.
- Add `:range-to` and `:down-to` verbs in the `loop` macro.
- Fix `and` and `or` macros returning nil instead of false in some cases.
- Allow matching successfully against nil values in the `match` macro.
- Improve `janet_formatc` and `janet_panicf` formatters to be more like `string/format`.
This makes it easier to make nice error messages from C.
- Add `signal`
@ -12,6 +17,7 @@ All notable changes to this project will be documented in this file.
- Correct arity for `marshal`
- Add `flush` and `eflush`
- Add `prompt` and `return` on top of signal for user friendly delimited continuations.
- Fix possible segfault with malformed pegs.
## 1.7.0 - 2020-02-01
- Remove `file/fileno` and `file/fdopen`.

49
README.md
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@ -14,7 +14,7 @@ The language also supports bridging to native code written in C, meta-programmin
There is a repl for trying out the language, as well as the ability
to run script files. This client program is separate from the core runtime, so
janet could be embedded into other programs. Try janet in your browser at
janet can be embedded into other programs. Try janet in your browser at
[https://janet-lang.org](https://janet-lang.org).
<br>
@ -61,7 +61,9 @@ documentation for symbols in the core library. For example,
Shows documentation for the doc macro.
To get a list of all bindings in the default
environment, use the `(all-bindings)` function.
environment, use the `(all-bindings)` function. You
can also use the `(doc)` macro with no arguments if you are in the repl
to show bound symbols.
## Source
@ -122,7 +124,7 @@ is maybe more convenient and flexible for integrating into existing pipelines.
Meson also provides much better IDE integration than Make or batch files, as well as support
for cross compilation.
For the impatient, building with Meson is as simple as follows. The options provided to
For the impatient, building with Meson is as follows. The options provided to
`meson setup` below emulate Janet's Makefile.
```sh
@ -152,7 +154,7 @@ 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
to try out the language, you don't need to install anything. You can also simply move the `janet` executable wherever you want on your system and run it.
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
@ -163,35 +165,38 @@ If you are looking to explore, you can print a list of all available macros, fun
by entering the command `(all-bindings)` into the repl.
```
$ ./janet
Janet 0.0.0 alpha Copyright (C) 2017-2018 Calvin Rose
$ janet
Janet 1.7.1-dev-951e10f Copyright (C) 2017-2020 Calvin Rose
janet:1:> (+ 1 2 3)
6
janet:2:> (print "Hello, World!")
Hello, World!
nil
janet:3:> (os/exit)
$ ./janet -h
usage: ./janet [options] scripts...
$ janet -h
usage: build/janet [options] script args...
Options are:
-h Show this help
-v Print the version string
-s Use raw stdin instead of getline like functionality
-e Execute a string of janet
-r Enter the repl after running all scripts
-p Keep on executing if there is a top level error (persistent)
-- Stop handling option
$
-h : Show this help
-v : Print the version string
-s : Use raw stdin instead of getline like functionality
-e code : Execute a string of janet
-r : Enter the repl after running all scripts
-p : Keep on executing if there is a top level error (persistent)
-q : Hide prompt, logo, and repl output (quiet)
-k : Compile scripts but do not execute (flycheck)
-m syspath : Set system path for loading global modules
-c source output : Compile janet source code into an image
-n : Disable ANSI color output in the repl
-l path : Execute code in a file before running the main script
-- : Stop handling options
```
If installed, you can also run `man janet` to get usage information.
If installed, you can also run `man janet` and `man jpm` to get usage information.
## Embedding
The C API for Janet is not yet documented but coming soon.
Janet can be embedded in a host program very easily. There is a make target
`make amalg` which creates the file `build/janet.c`, which is a single C file
Janet can be embedded in a host program very easily. The normal build
will create a file `build/janet.c`, which is a single C file
that contains all the source to Janet. This file, along with
`src/include/janet.h` and `src/include/janetconf.h` can dragged into any C
project and compiled into the project. Janet should be compiled with `-std=c99`
@ -200,6 +205,8 @@ the dynamic linker, `-ldl`, if one wants to be able to load dynamic modules. If
there is no need for dynamic modules, add the define
`-DJANET_NO_DYNAMIC_MODULES` to the compiler options.
See the [Embedding Section](https://janet-lang.org/capi/embedding.html) on the website for more information.
## Examples
See the examples directory for some example janet code.

73
src/boot/boot.janet
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@ -244,26 +244,30 @@
[(,not= :error (,fiber/status ,f)) ,r])))
(defmacro and
"Evaluates to the last argument if all preceding elements are true, otherwise
evaluates to false."
"Evaluates to the last argument if all preceding elements are truthy, otherwise
evaluates to the first falsey argument."
[& forms]
(var ret true)
(def len (length forms))
(var i len)
(while (> i 0)
(-- i)
(def v (in forms i))
(set ret (if (= ret true)
(in forms i)
(tuple 'if (in forms i) ret))))
v
(if (idempotent? v)
['if v ret v]
(do (def s (gensym))
['if ['def s v] ret s])))))
ret)
(defmacro or
"Evaluates to the last argument if all preceding elements are false, otherwise
evaluates to true."
"Evaluates to the last argument if all preceding elements are falsey, otherwise
evaluates to the first truthy element."
[& forms]
(var ret nil)
(def len (length forms))
(var i len)
(var i (- len 1))
(var ret (in forms i))
(while (> i 0)
(-- i)
(def fi (in forms i))
@ -362,6 +366,16 @@
,;body
(set ,i (,delta ,i ,step))))))
(defn- check-indexed [x]
(if (indexed? x)
x
(error (string "expected tuple for range, got " x))))
(defn- range-template
[binding object rest op comparison]
(let [[start stop step] (check-indexed object)]
(for-template binding start stop (or step 1) comparison op [rest])))
(defn- each-template
[binding inx body]
(with-syms [k]
@ -395,11 +409,6 @@
(def ,binding ,i)
,body))))
(defn- check-indexed [x]
(if (indexed? x)
x
(error (string "expected tuple for range, got " x))))
(defn- loop1
[body head i]
@ -429,12 +438,12 @@
(def {(+ i 2) object} head)
(let [rest (loop1 body head (+ i 3))]
(case verb
:range (let [[start stop step] (check-indexed object)]
(for-template binding start stop (or step 1) < + [rest]))
:range (range-template binding object rest + <)
:range-to (range-template binding object rest + <=)
:down (range-template binding object rest - >)
:down-to (range-template binding object rest - >=)
:keys (keys-template binding object false [rest])
:pairs (keys-template binding object true [rest])
:down (let [[start stop step] (check-indexed object)]
(for-template binding start stop (or step 1) > - [rest]))
:in (each-template binding object [rest])
:iterate (iterate-template binding object rest)
:generate (with-syms [f s]
@ -477,11 +486,14 @@
\t:iterate - repeatedly evaluate and bind to the expression while it is truthy.\n
\t:range - loop over a range. The object should be two element tuple with a start
and end value, and an optional positive step. The range is half open, [start, end).\n
\t:down - Same as range, but loops in reverse.\n
\t:keys - Iterate over the keys in a data structure.\n
\t:pairs - Iterate over the keys value pairs in a data structure.\n
\t:in - Iterate over the values in an indexed data structure or byte sequence.\n
\t:generate - Iterate over values yielded from a fiber. Can be paired with the generator
\t:range-to - same as :range, but the range is inclusive [start, end].\n
\t:down - loop over a range, stepping downwards. The object should be two element tuple
with a start and (exclusive) end value, and an optional (positive!) step size.\n
\t:down-to - same :as down, but the range is inclusive [start, end].\n
\t:keys - iterate over the keys in a data structure.\n
\t:pairs - iterate over the keys value pairs as tuples in a data structure.\n
\t:in - iterate over the values in a data structure.\n
\t:generate - iterate over values yielded from a fiber. Can be paired with the generator
function for the producer/consumer pattern.\n\n
loop also accepts conditionals to refine the looping further. Conditionals are of
the form:\n\n
@ -505,6 +517,7 @@
(put _env 'iterate-template nil)
(put _env 'each-template nil)
(put _env 'keys-template nil)
(put _env 'range-template nil)
(defmacro seq
"Similar to loop, but accumulates the loop body into an array and returns that.
@ -1276,7 +1289,7 @@
nil)
(defn pp
"Pretty print to stdout or (dyn :out)."
`Pretty print to stdout or (dyn :out). The format string used is (dyn :pretty-format "%q").`
[x]
(printf (dyn :pretty-format "%q") x)
(flush))
@ -1312,6 +1325,9 @@
[pattern expr onmatch seen]
(cond
(= '_ pattern)
(onmatch)
(symbol? pattern)
(if (in seen pattern)
~(if (= ,pattern ,expr) ,(onmatch) ,sentinel)
@ -1352,23 +1368,26 @@
~(if (,dictionary? ,$dict)
,((fn aux []
(set key (next pattern key))
(def $val (gensym))
(if (= key nil)
(onmatch)
(match-1 [(in pattern key) [not= (in pattern key) nil]] [in $dict key] aux seen))))
~(do (def ,$val (,get ,$dict ,key))
,(match-1 [(in pattern key) [not= nil $val]] $val aux seen)))))
,sentinel)))
:else ~(if (= ,pattern ,expr) ,(onmatch) ,sentinel)))
(defmacro match
"Pattern matching. Match an expression x against
any number of cases. Easy case is a pattern to match against, followed
any number of cases. Each case is a pattern to match against, followed
by an expression to evaluate to if that case is matched. A pattern that is
a symbol will match anything, binding x's value to that symbol. An array
will match only if all of it's elements match the corresponding elements in
x. A table or struct will match if all values match with the corresponding
values in x. A tuple pattern will match if it's first element matches, and the following
elements are treated as predicates and are true. Any other value pattern will only
match if it is equal to x."
elements are treated as predicates and are true. The last special case is
the '_ symbol, which is a wildcard that will match any value without creating a binding.
Any other value pattern will only match if it is equal to x."
[x & cases]
(with-idemp $x x
(def len (length cases))

14
src/core/peg.c
View File

@ -369,19 +369,23 @@ tail:
s->mode = oldmode;
if (!result) return NULL;
Janet cap;
Janet cap = janet_wrap_nil();
Janet constant = s->constants[rule[2]];
switch (janet_type(constant)) {
default:
cap = constant;
break;
case JANET_STRUCT:
cap = janet_struct_get(janet_unwrap_struct(constant),
s->captures->data[s->captures->count - 1]);
if (s->captures->count) {
cap = janet_struct_get(janet_unwrap_struct(constant),
s->captures->data[s->captures->count - 1]);
}
break;
case JANET_TABLE:
cap = janet_table_get(janet_unwrap_table(constant),
s->captures->data[s->captures->count - 1]);
if (s->captures->count) {
cap = janet_table_get(janet_unwrap_table(constant),
s->captures->data[s->captures->count - 1]);
}
break;
case JANET_CFUNCTION:
cap = janet_unwrap_cfunction(constant)(s->captures->count - cs.cap,

3
src/mainclient/shell.c
View File

@ -765,6 +765,9 @@ static int line() {
case '.': /* Alt-. */
historymove(-JANET_HISTORY_MAX);
break;
case 127: /* Alt-backspace */
kbackspacew();
break;
}
}
break;

6
test/suite1.janet
View File

@ -212,13 +212,17 @@
(assert (= 7 (case :a :b 5 :c 6 :u 10 7)) "case with default")
# Testing the loop and for macros
# Testing the loop and seq macros
(def xs (apply tuple (seq [x :range [0 10] :when (even? x)] (tuple (/ x 2) x))))
(assert (= xs '((0 0) (1 2) (2 4) (3 6) (4 8))) "seq macro 1")
(def xs (apply tuple (seq [x :down [8 -2] :when (even? x)] (tuple (/ x 2) x))))
(assert (= xs '((4 8) (3 6) (2 4) (1 2) (0 0))) "seq macro 2")
# :range-to and :down-to
(assert (deep= (seq [x :range-to [0 10]] x) (seq [x :range [0 11]] x)) "loop :range-to")
(assert (deep= (seq [x :down-to [10 0]] x) (seq [x :down [10 -1]] x)) "loop :down-to")
# Some testing for not=
(assert (not= 1 1 0) "not= 1")
(assert (not= 0 1 1) "not= 2")

19
test/suite8.janet
View File

@ -107,4 +107,23 @@
(assert (= nil (match [1 2] [a b c] a)) "match 4")
(assert (= 2 (match [1 2] [a b] b)) "match 5")
# And/or checks
(assert (= false (and false false)) "and 1")
(assert (= false (or false false)) "or 1")
# #300 Regression test
# Just don't segfault
(assert (peg/match '{:main (replace "S" {"S" :spade})} "S7") "regression #300")
# Test cases for #293
(assert (= :yes (match [1 2 3] [_ a _] :yes :no)) "match wildcard 1")
(assert (= :no (match [1 2 3] [__ a __] :yes :no)) "match wildcard 2")
(assert (= :yes (match [1 2 [1 2 3]] [_ a [_ _ _]] :yes :no)) "match wildcard 3")
(assert (= :yes (match [1 2 3] (_ (even? 2)) :yes :no)) "match wildcard 4")
(assert (= :yes (match {:a 1} {:a _} :yes :no)) "match wildcard 5")
(assert (= false (match {:a 1 :b 2 :c 3} {:a a :b _ :c _ :d _} :no {:a _ :b _ :c _} false :no)) "match wildcard 6")
(assert (= nil (match {:a 1 :b 2 :c 3} {:a a :b _ :c _ :d _} :no {:a _ :b _ :c _} nil :no)) "match wildcard 7")
(end-suite)