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/*
* Copyright © 2021 Michael Smith <mikesmiffy128@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../os.h"
#include "cmeta.h"
#define MAXENT 65536 // arbitrary limit!
static struct ent {
const char *name;
bool unreg;
bool isvar; // false for cmd
} ents[MAXENT];
static int nents;
static void die(const char *s) {
fprintf(stderr, "codegen: %s\n", s);
exit(100);
}
#define PUT(name_, isvar_, unreg_) do { \
if (nents == sizeof(ents) / sizeof(*ents)) { \
fprintf(stderr, "codegen: out of space; make ents bigger!\n"); \
exit(1); \
} \
ents[nents].name = name_; \
ents[nents].isvar = isvar_; ents[nents++].unreg = unreg_; \
} while (0)
static void oncondef(const char *name, bool isvar, bool unreg) {
PUT(name, isvar, unreg);
}
#define _(x) \
if (fprintf(out, "%s\n", x) < 0) die("couldn't write to file");
#define F(f, ...) \
if (fprintf(out, f "\n", __VA_ARGS__) < 0) die("couldn't write to file");
#define H() \
_( "/* This file is autogenerated by src/build/codegen.c. DO NOT EDIT! */") \
_( "")
int OS_MAIN(int argc, os_char *argv[]) {
for (++argv; *argv; ++argv) {
const struct cmeta *cm = cmeta_loadfile(*argv);
cmeta_conmacros(cm, &oncondef);
}
FILE *out = fopen(".build/include/cmdinit.gen.h", "wb");
if (!out) die("couldn't open cmdinit.gen.h");
H();
for (const struct ent *p = ents; p - ents < nents; ++p) {
F( "extern struct con_%s *%s;", p->isvar ? "var" : "cmd", p->name)
}
_( "")
_( "static void regcmds(void) {")
for (const struct ent *p = ents; p - ents < nents; ++p) {
if (p->isvar) {
F( " initval(%s);", p->name)
}
if (!p->unreg) {
F( " con_reg(%s);", p->name)
}
}
_( "}")
_( "")
_( "static void freevars(void) {")
for (const struct ent *p = ents; p - ents < nents; ++p) {
if (p->isvar) {
F( " extfree(%s->strval);", p->name);
}
}
_( "}")
if (fflush(out) == EOF) die("couldn't fully write cmdinit.gen.h");
return 0;
}
// vi: sw=4 ts=4 noet tw=80 cc=80
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