Initial commit
This commit is contained in:
commit
c838cb7aad
9 changed files with 331 additions and 0 deletions
1
.envrc
Normal file
1
.envrc
Normal file
|
|
@ -0,0 +1 @@
|
|||
use flake
|
||||
4
.gitignore
vendored
Normal file
4
.gitignore
vendored
Normal file
|
|
@ -0,0 +1,4 @@
|
|||
/target
|
||||
/.direnv
|
||||
*.o
|
||||
*.out
|
||||
27
flake.lock
Normal file
27
flake.lock
Normal file
|
|
@ -0,0 +1,27 @@
|
|||
{
|
||||
"nodes": {
|
||||
"nixpkgs": {
|
||||
"locked": {
|
||||
"lastModified": 1712791164,
|
||||
"narHash": "sha256-3sbWO1mbpWsLepZGbWaMovSO7ndZeFqDSdX0hZ9nVyw=",
|
||||
"owner": "NixOS",
|
||||
"repo": "nixpkgs",
|
||||
"rev": "1042fd8b148a9105f3c0aca3a6177fd1d9360ba5",
|
||||
"type": "github"
|
||||
},
|
||||
"original": {
|
||||
"owner": "NixOS",
|
||||
"ref": "nixos-unstable",
|
||||
"repo": "nixpkgs",
|
||||
"type": "github"
|
||||
}
|
||||
},
|
||||
"root": {
|
||||
"inputs": {
|
||||
"nixpkgs": "nixpkgs"
|
||||
}
|
||||
}
|
||||
},
|
||||
"root": "root",
|
||||
"version": 7
|
||||
}
|
||||
42
flake.nix
Normal file
42
flake.nix
Normal file
|
|
@ -0,0 +1,42 @@
|
|||
{
|
||||
inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
|
||||
outputs = {
|
||||
self,
|
||||
nixpkgs,
|
||||
}: let
|
||||
inherit (self) outputs;
|
||||
supportedSystems = [
|
||||
"x86_64-linux"
|
||||
"aarch64-linux"
|
||||
|
||||
"x86_64-darwin"
|
||||
"aarch64-darwin"
|
||||
];
|
||||
forEachSupportedSystem = nixpkgs.lib.genAttrs supportedSystems;
|
||||
in {
|
||||
packages = forEachSupportedSystem (system: let
|
||||
pkgs = import nixpkgs {inherit system;};
|
||||
in {
|
||||
modal = pkgs.stdenv.mkDerivation {
|
||||
srcs = [./modal.c];
|
||||
name = "myenv";
|
||||
buildInputs = with pkgs; [clang];
|
||||
};
|
||||
|
||||
default = outputs.packages.${system}.modal;
|
||||
});
|
||||
|
||||
devShells = forEachSupportedSystem (system: let
|
||||
pkgs = import nixpkgs {inherit system;};
|
||||
in {
|
||||
c-dev = pkgs.mkShell {
|
||||
buildInputs = with pkgs; [
|
||||
clang
|
||||
lldb
|
||||
];
|
||||
};
|
||||
|
||||
default = outputs.devShells.${system}.c-dev;
|
||||
});
|
||||
};
|
||||
}
|
||||
7
ifelse.modal
Normal file
7
ifelse.modal
Normal file
|
|
@ -0,0 +1,7 @@
|
|||
<> (ifelse (#t) ?t ?f) (?t)
|
||||
<> (ifelse (#f) ?t ?f) (?f)
|
||||
|
||||
.. (ifelse (eq cat fox) on-equal on-unequal)
|
||||
03 (ifelse (#f) on-equal on-unequal)
|
||||
01 (on-unequal)
|
||||
|
||||
11
mimic.modal
Normal file
11
mimic.modal
Normal file
|
|
@ -0,0 +1,11 @@
|
|||
<> (M ?x) (?x ?x)
|
||||
<> (KI ?x ?y) (?y)
|
||||
<> (T ?x ?y) (?y ?y)
|
||||
<> (W ?x ?y) (?x ?y ?y)
|
||||
<> (K ?x ?y) (?x)
|
||||
<> (C ?x ?y ?z) (?x ?z ?y)
|
||||
<> (B ?x ?y ?z) (?x (?y ?z))
|
||||
<> (I ?x) (?x)
|
||||
<> (S ?x ?y ?z) (?x ?z (?y ?z))
|
||||
|
||||
.. C KI x y z
|
||||
1
modal
Submodule
1
modal
Submodule
|
|
@ -0,0 +1 @@
|
|||
Subproject commit 6541d85cff9ccb9fd7832b8bac2d210e843fee5b
|
||||
228
modal.c
Normal file
228
modal.c
Normal file
|
|
@ -0,0 +1,228 @@
|
|||
#include <stdio.h>
|
||||
|
||||
typedef struct {
|
||||
int id;
|
||||
char *a, *b;
|
||||
} Rule;
|
||||
|
||||
static int dst;
|
||||
static Rule rules[0x1000], lambda, *rules_ = rules;
|
||||
static char dict[0x8000], *dict_ = dict;
|
||||
static char bank_a[0x4000], *prog_ = bank_a;
|
||||
static char bank_b[0x4000], *outp_ = bank_b;
|
||||
static char *regs[0x100];
|
||||
|
||||
#define spacer(c) (c <= ' ' || c == '(' || c == ')')
|
||||
|
||||
static char *
|
||||
walk(char *s)
|
||||
{
|
||||
char c;
|
||||
int depth = 0;
|
||||
if(*s == '(') {
|
||||
while((c = *s++)) {
|
||||
if(c == '(') depth++;
|
||||
if(c == ')') --depth;
|
||||
if(!depth) return s;
|
||||
}
|
||||
}
|
||||
while((c = *s) && !spacer(c)) s++;
|
||||
return s;
|
||||
}
|
||||
|
||||
static char *
|
||||
plode(char *s)
|
||||
{
|
||||
int i, depth = 0;
|
||||
char c, *ss;
|
||||
/* implode */
|
||||
if(*s == '(') {
|
||||
ss = walk(s);
|
||||
while(s < ss && (c = *s++))
|
||||
if(!spacer(c)) *outp_++ = c;
|
||||
}
|
||||
/* explode */
|
||||
else {
|
||||
while((c = *s++) && !spacer(c))
|
||||
*outp_++ = c, *outp_++ = ' ', *outp_++ = '(', depth++;
|
||||
for(i = 0; i < depth; i++)
|
||||
*outp_++ = ')';
|
||||
}
|
||||
return s;
|
||||
}
|
||||
|
||||
static int
|
||||
set_reg(int r, char *b)
|
||||
{
|
||||
if(regs[r]) {
|
||||
char *a = regs[r], *aa = walk(a), *bb = walk(b);
|
||||
while(a < aa && b < bb)
|
||||
if(*a++ != *b++) return 0;
|
||||
} else
|
||||
regs[r] = b;
|
||||
return 1;
|
||||
}
|
||||
|
||||
static void
|
||||
put_reg(char r)
|
||||
{
|
||||
char *s = regs[(int)r];
|
||||
if(r == '*')
|
||||
s = plode(s);
|
||||
else if(r == '~') {
|
||||
char buf;
|
||||
while(fread(&buf, 1, 1, stdin) && buf >= ' ')
|
||||
*outp_++ = buf;
|
||||
} else if(s) {
|
||||
char *ss = walk(s);
|
||||
if(r == ':') {
|
||||
if(*s == '(') s++, --ss;
|
||||
while(s < ss) {
|
||||
char c = *s++;
|
||||
if(c == '\\') {
|
||||
switch(*s++) {
|
||||
case 't': putc(0x09, stdout); break;
|
||||
case 'n': putc(0x0a, stdout); break;
|
||||
case 's': putc(0x20, stdout); break;
|
||||
}
|
||||
} else
|
||||
putc(c, stdout);
|
||||
}
|
||||
} else
|
||||
while(s < ss) *outp_++ = *s++;
|
||||
} else
|
||||
*outp_++ = '?', *outp_++ = r;
|
||||
}
|
||||
|
||||
static char *
|
||||
match_rule(Rule *r, char *p)
|
||||
{
|
||||
int i;
|
||||
char c, last = 0, *a = r->a, *b = p;
|
||||
for(i = 0x21; i < 0x7f; i++)
|
||||
regs[i] = 0;
|
||||
while((c = *a)) {
|
||||
if(spacer(last) && c == '?') {
|
||||
if(!set_reg(*(++a), b)) return NULL;
|
||||
a++, b = walk(b);
|
||||
continue;
|
||||
}
|
||||
if(*a != *b) return NULL;
|
||||
a++, b++, last = c;
|
||||
}
|
||||
c = *b;
|
||||
return spacer(c) ? b : NULL;
|
||||
}
|
||||
|
||||
static int
|
||||
commit_rule(Rule *r, char *s, int create)
|
||||
{
|
||||
while((*outp_++ = *s++))
|
||||
;
|
||||
*outp_++ = 0;
|
||||
if((dst = !dst))
|
||||
prog_ = bank_b, outp_ = bank_a;
|
||||
else
|
||||
prog_ = bank_a, outp_ = bank_b;
|
||||
if(create)
|
||||
fprintf(stderr, "<> (%s) (%s)\n", r->a, r->b);
|
||||
else
|
||||
fprintf(stderr, "%02d %s\n", r->id, prog_);
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int
|
||||
write_rule(Rule *r, char last, char *res)
|
||||
{
|
||||
char c, *b = r->b, *origin = outp_;
|
||||
while((c = *b++))
|
||||
if(spacer(last) && c == '?')
|
||||
put_reg(*b++);
|
||||
else
|
||||
*outp_++ = c, last = c;
|
||||
if(last == ' ' && outp_ - origin == 0) outp_--;
|
||||
return commit_rule(r, res, 0);
|
||||
}
|
||||
|
||||
static char *
|
||||
parse_frag(char *s)
|
||||
{
|
||||
char c, *ss;
|
||||
while((c = *s) && c <= ' ') s++;
|
||||
if(*s != ')' && *s != '<' && s[1] != '>') {
|
||||
ss = walk(s);
|
||||
if(*s == '(') s++, ss--;
|
||||
while(s < ss) *dict_++ = *s++;
|
||||
s++;
|
||||
}
|
||||
*dict_++ = 0;
|
||||
return s;
|
||||
}
|
||||
|
||||
static char *
|
||||
create_rule(Rule *r, int id, char *s)
|
||||
{
|
||||
r->id = id, s += 2;
|
||||
r->a = dict_, s = parse_frag(s);
|
||||
r->b = dict_, s = parse_frag(s);
|
||||
return s;
|
||||
}
|
||||
|
||||
static int
|
||||
rewrite(void)
|
||||
{
|
||||
char c, last = 0, *cap, *s = dst ? bank_b : bank_a, *res;
|
||||
while((c = *s) && c <= ' ') s++;
|
||||
while((c = *s)) {
|
||||
if(spacer(last)) {
|
||||
Rule *r;
|
||||
if(*s == '<' && s[1] == '>') {
|
||||
r = rules_++;
|
||||
s = create_rule(r, rules_ - rules - 1, s);
|
||||
while((c = *s) && c <= ' ') s++;
|
||||
return commit_rule(r, s, 1);
|
||||
}
|
||||
if(*s == '?' && s[1] == '(') {
|
||||
r = &lambda, cap = walk(s + 1);
|
||||
create_rule(&lambda, -1, s), s = cap;
|
||||
while((c = *s) && c <= ' ') s++;
|
||||
if((res = match_rule(&lambda, s)) != NULL)
|
||||
return write_rule(&lambda, last, res);
|
||||
}
|
||||
for(r = rules; r < rules_; r++)
|
||||
if((res = match_rule(r, s)) != NULL)
|
||||
return write_rule(r, last, res);
|
||||
}
|
||||
*outp_++ = last = c;
|
||||
s++;
|
||||
}
|
||||
*outp_++ = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
main(int argc, char **argv)
|
||||
{
|
||||
FILE *f;
|
||||
char c, *w = bank_a;
|
||||
if(argc < 2)
|
||||
return !printf("usage: modal [-v] source.modal\n");
|
||||
if(argc < 3 && argv[1][0] == '-' && argv[1][1] == 'v')
|
||||
return !printf("Modal Interpreter, 12 Apr 2024.\n");
|
||||
if(!(f = fopen(argv[1], "r")))
|
||||
return !printf("Invalid Modal file: %s.\n", argv[1]);
|
||||
while(fread(&c, 1, 1, f)) {
|
||||
c = c <= 0x20 ? 0x20 : c;
|
||||
if(w > bank_a) {
|
||||
if(c == ' ' && *(w - 1) == '(') continue;
|
||||
if(c == ')' && *(w - 1) == ' ') w--;
|
||||
if(c == ' ' && *(w - 1) == ' ') w--;
|
||||
}
|
||||
*w++ = c;
|
||||
}
|
||||
while(*(--w) <= ' ') *w = 0;
|
||||
fclose(f);
|
||||
while(rewrite())
|
||||
;
|
||||
return 0;
|
||||
}
|
||||
10
readme.md
Normal file
10
readme.md
Normal file
|
|
@ -0,0 +1,10 @@
|
|||
# Modal
|
||||
|
||||
Playing around with the [Modal][0] concatenative language.
|
||||
|
||||
Current source for the language is at [git.sr.ht/~rabbits/modal][1] and original
|
||||
source is at [gitlab.com/wryl/modal][2].
|
||||
|
||||
[0]: https://wiki.xxiivv.com/site/modal
|
||||
[1]: https://git.sr.ht/~rabbits/modal
|
||||
[2]: https://gitlab.com/wryl/modal
|
||||
Loading…
Reference in a new issue