2020-01-08 19:34:12 +03:00
|
|
|
include "reader";
|
|
|
|
include "printer";
|
|
|
|
include "utils";
|
|
|
|
include "interp";
|
|
|
|
include "env";
|
|
|
|
include "core";
|
|
|
|
|
|
|
|
def read_line:
|
|
|
|
. as $in
|
|
|
|
| label $top
|
|
|
|
| _readline;
|
|
|
|
|
|
|
|
def READ:
|
|
|
|
read_str | read_form | .value;
|
|
|
|
|
|
|
|
def recurseflip(x; y):
|
|
|
|
recurse(y; x);
|
|
|
|
|
|
|
|
def TCOWrap(env; retenv; continue):
|
|
|
|
{
|
|
|
|
ast: .,
|
|
|
|
env: env,
|
2020-01-10 09:01:00 +03:00
|
|
|
ret_env: (if retenv != null then (retenv | setpath(["atoms"]; env.atoms)) else retenv end),
|
2020-01-08 19:34:12 +03:00
|
|
|
finish: (continue | not),
|
|
|
|
cont: true # set inside
|
|
|
|
};
|
|
|
|
|
|
|
|
def _symbol(name):
|
|
|
|
{
|
|
|
|
kind: "symbol",
|
|
|
|
value: name
|
|
|
|
};
|
|
|
|
|
|
|
|
def _symbol_v(name):
|
|
|
|
if .kind == "symbol" then
|
|
|
|
.value == name
|
|
|
|
else
|
|
|
|
false
|
|
|
|
end;
|
|
|
|
|
|
|
|
def quasiquote:
|
2020-07-21 19:01:48 +03:00
|
|
|
|
|
|
|
# If input is ('name, arg), return arg, else nothing.
|
|
|
|
def _starts_with(name):
|
|
|
|
select(.kind == "list")
|
|
|
|
| .value
|
|
|
|
| select(length == 2)
|
|
|
|
| select(.[0] | _symbol_v(name))
|
|
|
|
| .[1];
|
|
|
|
|
|
|
|
# Right-folding function. The current element is provided as input.
|
|
|
|
def qq_loop(acc):
|
|
|
|
((_starts_with("splice-unquote") | [_symbol("concat"), ., acc])
|
|
|
|
// [_symbol("cons"), quasiquote, acc])
|
|
|
|
| {kind:"list", value:.};
|
|
|
|
|
|
|
|
# Adapt parameters for jq foldr.
|
|
|
|
def qq_foldr:
|
|
|
|
.value
|
|
|
|
| reverse
|
|
|
|
| reduce .[] as $elt ({kind:"list", value:[]};
|
|
|
|
. as $acc | $elt | qq_loop($acc));
|
|
|
|
|
|
|
|
_starts_with("unquote")
|
|
|
|
// (
|
|
|
|
select(.kind == "list")
|
|
|
|
| qq_foldr
|
|
|
|
) // (
|
|
|
|
select(.kind == "vector")
|
|
|
|
| {kind:"list", value:[_symbol("vec"), qq_foldr]}
|
|
|
|
) // (
|
|
|
|
select(.kind == "hashmap" or .kind == "symbol")
|
|
|
|
| {kind:"list", value:[_symbol("quote"), .]}
|
|
|
|
) // .;
|
2020-01-08 19:34:12 +03:00
|
|
|
|
|
|
|
def set_macro_function:
|
|
|
|
if .kind != "function" then
|
|
|
|
jqmal_error("expected a function to be defined by defmacro!")
|
|
|
|
else
|
|
|
|
.is_macro |= true
|
|
|
|
end;
|
|
|
|
|
|
|
|
def is_macro_call(env):
|
|
|
|
if .kind != "list" then
|
|
|
|
false
|
|
|
|
else
|
|
|
|
if (.value|first.kind == "symbol") then
|
|
|
|
env_req(env; .value|first.value)
|
|
|
|
| if .kind != "function" then
|
|
|
|
false
|
|
|
|
else
|
|
|
|
.is_macro
|
|
|
|
end
|
|
|
|
else
|
|
|
|
false
|
|
|
|
end
|
|
|
|
end;
|
|
|
|
|
|
|
|
def EVAL(env):
|
|
|
|
def _eval_here:
|
|
|
|
.env as $env | .expr | EVAL($env);
|
|
|
|
|
|
|
|
def _interpret($_menv):
|
|
|
|
reduce .value[] as $elem (
|
2020-01-10 09:01:00 +03:00
|
|
|
{env: $_menv, val: []};
|
|
|
|
. as $dot | $elem | EVAL($dot.env) as $eval_env |
|
|
|
|
($dot.env | setpath(["atoms"]; $eval_env.env.atoms)) as $_menv |
|
|
|
|
{env: $_menv, val: ($dot.val + [$eval_env.expr])}
|
|
|
|
) | . as $expr | $expr.val | first |
|
|
|
|
interpret($expr.val[1:]; $expr.env; _eval_here);
|
2020-01-08 19:34:12 +03:00
|
|
|
|
|
|
|
def macroexpand(env):
|
2020-01-10 04:13:54 +03:00
|
|
|
. as $dot |
|
|
|
|
$dot |
|
2020-01-08 19:34:12 +03:00
|
|
|
[ while(is_macro_call(env | unwrapCurrentEnv);
|
2020-01-10 04:13:54 +03:00
|
|
|
. as $dot
|
|
|
|
| ($dot.value[0] | EVAL(env).expr) as $fn
|
|
|
|
| $dot.value[1:] as $args
|
|
|
|
| $fn
|
|
|
|
| interpret($args; env; _eval_here).expr) // . ]
|
|
|
|
| last
|
2020-01-08 19:34:12 +03:00
|
|
|
| if is_macro_call(env | unwrapCurrentEnv) then
|
2020-01-10 04:13:54 +03:00
|
|
|
. as $dot
|
|
|
|
| ($dot.value[0] | EVAL(env).expr) as $fn
|
|
|
|
| $dot.value[1:] as $args
|
|
|
|
| $fn
|
|
|
|
| interpret($args; env; _eval_here).expr
|
2020-01-08 19:34:12 +03:00
|
|
|
else
|
|
|
|
.
|
2020-01-10 04:13:54 +03:00
|
|
|
end
|
|
|
|
;
|
2020-01-08 19:34:12 +03:00
|
|
|
|
|
|
|
def hmap_with_env:
|
|
|
|
.env as $env | .list as $list |
|
|
|
|
if $list|length == 0 then
|
|
|
|
empty
|
|
|
|
else
|
|
|
|
$list[0] as $elem |
|
|
|
|
$list[1:] as $rest |
|
|
|
|
$elem.value.value | EVAL($env) as $resv |
|
|
|
|
{
|
|
|
|
value: {
|
|
|
|
key: $elem.key,
|
|
|
|
value: { kkind: $elem.value.kkind, value: $resv.expr }
|
|
|
|
},
|
|
|
|
env: env
|
|
|
|
},
|
|
|
|
({env: $resv.env, list: $rest} | hmap_with_env)
|
|
|
|
end;
|
|
|
|
def map_with_env:
|
|
|
|
.env as $env | .list as $list |
|
|
|
|
if $list|length == 0 then
|
|
|
|
empty
|
|
|
|
else
|
|
|
|
$list[0] as $elem |
|
|
|
|
$list[1:] as $rest |
|
|
|
|
$elem | EVAL($env) as $resv |
|
|
|
|
{ value: $resv.expr, env: env },
|
|
|
|
({env: $resv.env, list: $rest} | map_with_env)
|
|
|
|
end;
|
|
|
|
def eval_ast(env):
|
|
|
|
(select(.kind == "vector") |
|
|
|
|
if .value|length == 0 then
|
|
|
|
{
|
|
|
|
kind: "vector",
|
|
|
|
value: []
|
|
|
|
}
|
|
|
|
else
|
|
|
|
[ { env: env, list: .value } | map_with_env ] as $res |
|
|
|
|
{
|
|
|
|
kind: "vector",
|
|
|
|
value: $res | map(.value)
|
|
|
|
}
|
|
|
|
end
|
|
|
|
) //
|
|
|
|
(select(.kind == "hashmap") |
|
|
|
|
[ { env: env, list: (.value | to_entries) } | hmap_with_env ] as $res |
|
|
|
|
{
|
|
|
|
kind: "hashmap",
|
|
|
|
value: $res | map(.value) | from_entries
|
|
|
|
}
|
|
|
|
) //
|
|
|
|
(select(.kind == "function") |
|
|
|
|
.# return this unchanged, since it can only be applied to
|
|
|
|
) //
|
|
|
|
(select(.kind == "symbol") |
|
|
|
|
.value | env_get(env | unwrapCurrentEnv)
|
|
|
|
) // .;
|
|
|
|
|
|
|
|
. as $ast
|
|
|
|
| { env: env, ast: ., cont: true, finish: false, ret_env: null }
|
|
|
|
| [ recurseflip(.cont;
|
|
|
|
.env as $_menv
|
|
|
|
| if .finish then
|
|
|
|
.cont |= false
|
|
|
|
else
|
|
|
|
(.ret_env//.env) as $_retenv
|
|
|
|
| .ret_env as $_orig_retenv
|
|
|
|
| .ast
|
|
|
|
| . as $init
|
|
|
|
| $_menv | unwrapCurrentEnv as $currentEnv # unwrap env "package"
|
|
|
|
| $_menv | unwrapReplEnv as $replEnv # -
|
|
|
|
| $init
|
|
|
|
|
|
|
|
|
(select(.kind == "list") |
|
|
|
|
macroexpand($_menv) |
|
|
|
|
if .kind != "list" then
|
|
|
|
eval_ast($_menv) | TCOWrap($_menv; $_orig_retenv; false)
|
|
|
|
else
|
|
|
|
if .value | length == 0 then
|
|
|
|
. | TCOWrap($_menv; $_orig_retenv; false)
|
|
|
|
else
|
|
|
|
(
|
|
|
|
(
|
|
|
|
.value | select(.[0].value == "def!") as $value |
|
|
|
|
($value[2] | EVAL($_menv)) as $evval |
|
|
|
|
addToEnv($evval; $value[1].value) as $val |
|
|
|
|
$val.expr | TCOWrap($val.env; $_orig_retenv; false)
|
|
|
|
) //
|
|
|
|
(
|
|
|
|
.value | select(.[0].value == "defmacro!") as $value |
|
|
|
|
($value[2] | EVAL($_menv) | (.expr |= set_macro_function)) as $evval |
|
|
|
|
addToEnv($evval; $value[1].value) as $val |
|
|
|
|
$val.expr | TCOWrap($val.env; $_orig_retenv; false)
|
|
|
|
) //
|
|
|
|
(
|
|
|
|
.value | select(.[0].value == "let*") as $value |
|
2020-01-10 17:27:51 +03:00
|
|
|
($currentEnv | pureChildEnv | wrapEnv($replEnv; $_menv.atoms)) as $_menv |
|
2020-01-08 19:34:12 +03:00
|
|
|
(reduce ($value[1].value | nwise(2)) as $xvalue (
|
2020-01-10 09:01:00 +03:00
|
|
|
$_menv;
|
2020-01-08 19:34:12 +03:00
|
|
|
. as $env | $xvalue[1] | EVAL($env) as $expenv |
|
|
|
|
env_set_($expenv.env; $xvalue[0].value; $expenv.expr))) as $env
|
|
|
|
| $value[2] | TCOWrap($env; $_retenv; true)
|
|
|
|
) //
|
|
|
|
(
|
|
|
|
.value | select(.[0].value == "do") as $value |
|
|
|
|
(reduce ($value[1:][]) as $xvalue (
|
|
|
|
{ env: $_menv, expr: {kind:"nil"} };
|
|
|
|
.env as $env | $xvalue | EVAL($env)
|
|
|
|
)) | . as $ex | .expr | TCOWrap($ex.env; $_orig_retenv; false)
|
|
|
|
) //
|
|
|
|
(
|
|
|
|
.value | select(.[0].value == "try*") as $value |
|
|
|
|
try (
|
|
|
|
$value[1] | EVAL($_menv) as $exp | $exp.expr | TCOWrap($exp.env; $_orig_retenv; false)
|
|
|
|
) catch ( . as $exc |
|
|
|
|
if $value[2] then
|
|
|
|
if ($value[2].value[0] | _symbol_v("catch*")) then
|
|
|
|
(if ($exc | is_jqmal_error) then
|
|
|
|
$exc[19:] as $ex |
|
|
|
|
try (
|
|
|
|
$ex
|
|
|
|
| fromjson
|
|
|
|
) catch (
|
|
|
|
$ex |
|
|
|
|
wrap("string")
|
|
|
|
)
|
|
|
|
else
|
|
|
|
$exc|wrap("string")
|
|
|
|
end) as $exc |
|
2020-01-10 09:01:00 +03:00
|
|
|
$value[2].value[2] | EVAL($currentEnv | childEnv([$value[2].value[1].value]; [$exc]) | wrapEnv($replEnv; $_menv.atoms)) as $ex |
|
2020-01-08 19:34:12 +03:00
|
|
|
$ex.expr | TCOWrap($ex.env; $_retenv; false)
|
|
|
|
else
|
|
|
|
error($exc)
|
|
|
|
end
|
|
|
|
else
|
|
|
|
error($exc)
|
|
|
|
end
|
|
|
|
)
|
|
|
|
) //
|
|
|
|
(
|
|
|
|
.value | select(.[0].value == "if") as $value |
|
|
|
|
$value[1] | EVAL($_menv) as $condenv |
|
|
|
|
(if (["false", "nil"] | contains([$condenv.expr.kind])) then
|
|
|
|
($value[3] // {kind:"nil"})
|
|
|
|
else
|
|
|
|
$value[2]
|
|
|
|
end) | TCOWrap($condenv.env; $_orig_retenv; true)
|
|
|
|
) //
|
|
|
|
(
|
|
|
|
.value | select(.[0].value == "fn*") as $value |
|
|
|
|
# (fn* args body)
|
|
|
|
$value[1].value | map(.value) as $binds |
|
|
|
|
($value[2] | find_free_references($currentEnv | env_dump_keys + $binds)) as $free_referencess | {
|
|
|
|
kind: "function",
|
|
|
|
binds: $binds,
|
2020-01-16 07:02:22 +03:00
|
|
|
env: ($_menv | env_remove_references($free_referencess)),
|
2020-01-08 19:34:12 +03:00
|
|
|
body: $value[2],
|
2020-01-12 14:39:52 +03:00
|
|
|
names: [], # we can't do that circular reference thing
|
2020-01-08 19:34:12 +03:00
|
|
|
free_referencess: $free_referencess, # for dynamically scoped variables
|
|
|
|
is_macro: false
|
|
|
|
} | TCOWrap($_menv; $_orig_retenv; false)
|
|
|
|
) //
|
|
|
|
(
|
|
|
|
.value | select(.[0].value == "quote") as $value |
|
|
|
|
$value[1] | TCOWrap($_menv; $_orig_retenv; false)
|
|
|
|
) //
|
2020-07-21 19:01:48 +03:00
|
|
|
(
|
|
|
|
.value | select(.[0].value == "quasiquoteexpand")
|
|
|
|
| .[1] | quasiquote | TCOWrap($_menv; $_orig_retenv; false)
|
|
|
|
) //
|
2020-01-08 19:34:12 +03:00
|
|
|
(
|
|
|
|
.value | select(.[0].value == "quasiquote") as $value |
|
|
|
|
$value[1] | quasiquote | TCOWrap($_menv; $_orig_retenv; true)
|
|
|
|
) //
|
|
|
|
(
|
|
|
|
.value | select(.[0].value == "macroexpand") as $value |
|
|
|
|
$value[1] | macroexpand(env) | TCOWrap($_menv; $_orig_retenv; false)
|
|
|
|
) //
|
|
|
|
(
|
|
|
|
. as $dot | _interpret($_menv) as $exprenv |
|
|
|
|
$exprenv.expr | TCOWrap($exprenv.env; $_orig_retenv; false)
|
|
|
|
) //
|
|
|
|
TCOWrap($_menv; $_orig_retenv; false)
|
|
|
|
)
|
|
|
|
end
|
|
|
|
end
|
|
|
|
) //
|
|
|
|
(eval_ast($_menv) | TCOWrap($_menv; $_orig_retenv; false))
|
|
|
|
end
|
|
|
|
) ]
|
|
|
|
| last as $result
|
|
|
|
| ($result.ret_env // $result.env) as $env
|
|
|
|
| $result.ast
|
|
|
|
| addEnv($env);
|
|
|
|
|
2020-01-10 09:01:00 +03:00
|
|
|
def PRINT(env):
|
|
|
|
pr_str(env);
|
2020-01-08 19:34:12 +03:00
|
|
|
|
|
|
|
def rep(env):
|
|
|
|
READ | EVAL(env) as $expenv |
|
|
|
|
if $expenv.expr != null then
|
2020-01-10 09:01:00 +03:00
|
|
|
$expenv.expr | PRINT($expenv.env)
|
2020-01-08 19:34:12 +03:00
|
|
|
else
|
|
|
|
null
|
|
|
|
end | addEnv($expenv.env);
|
|
|
|
|
|
|
|
def repl_(env):
|
|
|
|
("user> " | _print) |
|
|
|
|
(read_line | rep(env));
|
|
|
|
|
|
|
|
# we don't have no indirect functions, so we'll have to interpret the old way
|
|
|
|
def replEnv:
|
|
|
|
{
|
|
|
|
parent: null,
|
|
|
|
environment: ({
|
|
|
|
"+": {
|
|
|
|
kind: "fn", # native function
|
|
|
|
inputs: 2,
|
|
|
|
function: "number_add"
|
|
|
|
},
|
|
|
|
"-": {
|
|
|
|
kind: "fn", # native function
|
|
|
|
inputs: 2,
|
|
|
|
function: "number_sub"
|
|
|
|
},
|
|
|
|
"*": {
|
|
|
|
kind: "fn", # native function
|
|
|
|
inputs: 2,
|
|
|
|
function: "number_mul"
|
|
|
|
},
|
|
|
|
"/": {
|
|
|
|
kind: "fn", # native function
|
|
|
|
inputs: 2,
|
|
|
|
function: "number_div"
|
|
|
|
},
|
|
|
|
"eval": {
|
|
|
|
kind: "fn",
|
|
|
|
inputs: 1,
|
|
|
|
function: "eval"
|
|
|
|
}
|
|
|
|
} + core_identify),
|
|
|
|
fallback: null
|
|
|
|
};
|
|
|
|
|
|
|
|
def repl(env):
|
|
|
|
def xrepl:
|
|
|
|
(.env as $env | try repl_($env) catch addEnv($env)) as $expenv |
|
|
|
|
{
|
|
|
|
value: $expenv.expr,
|
|
|
|
stop: false,
|
|
|
|
env: ($expenv.env // .env)
|
|
|
|
} | ., xrepl;
|
2020-01-10 17:13:51 +03:00
|
|
|
{stop: false, env: env} | xrepl | if .value then (.value | _display) else empty end;
|
2020-01-08 19:34:12 +03:00
|
|
|
|
|
|
|
def eval_ign(expr):
|
|
|
|
. as $env | expr | rep($env) | .env;
|
|
|
|
|
|
|
|
def eval_val(expr):
|
|
|
|
. as $env | expr | rep($env) | .expr;
|
|
|
|
|
|
|
|
def getEnv:
|
|
|
|
replEnv
|
2020-01-10 09:01:00 +03:00
|
|
|
| wrapEnv({})
|
2020-01-08 19:34:12 +03:00
|
|
|
| eval_ign("(def! not (fn* (a) (if a false true)))")
|
|
|
|
| eval_ign("(def! load-file (fn* (f) (eval (read-string (str \"(do \" (slurp f) \"\\nnil)\")))))))")
|
|
|
|
| eval_ign("(defmacro! cond (fn* (& xs) (if (> (count xs) 0) (list 'if (first xs) (if (> (count xs) 1) (nth xs 1) (throw \"odd number of forms to cond\")) (cons 'cond (rest (rest xs)))))))")
|
|
|
|
;
|
|
|
|
|
|
|
|
def main:
|
|
|
|
if $ARGS.positional|length > 0 then
|
|
|
|
getEnv as $env |
|
|
|
|
env_set_($env; "*ARGV*"; $ARGS.positional[1:] | map(wrap("string")) | wrap("list")) |
|
2020-01-10 17:13:51 +03:00
|
|
|
eval_val("(load-file \($ARGS.positional[0] | tojson))") |
|
|
|
|
""
|
2020-01-08 19:34:12 +03:00
|
|
|
else
|
|
|
|
repl( getEnv as $env | env_set_($env; "*ARGV*"; [] | wrap("list")) )
|
|
|
|
end;
|
|
|
|
|
2020-01-12 14:39:52 +03:00
|
|
|
[ main ] | _halt
|