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Split out the interpreter

This commit is contained in:
Přemysl Eric Janouch 2017-05-21 12:47:09 +02:00
parent b31526d6ba
commit 455845d078
Signed by: p
GPG Key ID: B715679E3A361BE6
3 changed files with 77 additions and 57 deletions
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9
Makefile
View File

@ -1,7 +1,10 @@
CFLAGS = -std=c99 -Wall -Wextra -ggdb
all: ell
ell: ell.c
all: interpreter
interpreter: interpreter.c ell.c
$(CC) $(CFLAGS) $< -o $@
repl: repl.c ell.c
$(CC) $(CFLAGS) $< -o $@
clean:
rm ell
rm -f interpreter repl
.PHONY: all clean

54
ell.c Executable file → Normal file
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@ -24,7 +24,6 @@
#include <errno.h>
#include <stdarg.h>
#include <assert.h>
#include <time.h>
#include <stdbool.h>
#include <setjmp.h>
@ -1283,56 +1282,3 @@ init_runtime_library (struct context *ctx) {
&& native_register (ctx, "=", fn_equals)
&& native_register (ctx, "<", fn_less);
}
// --- Main --------------------------------------------------------------------
int
main (int argc, char *argv[]) {
FILE *fp = stdin;
if (argc > 1 && !(fp = fopen (argv[1], "rb"))) {
fprintf (stderr, "%s: %s\n", argv[1], strerror (errno));
return 1;
}
int c;
struct buffer buf = BUFFER_INITIALIZER;
while ((c = fgetc (fp)) != EOF)
buffer_append_c (&buf, c);
buffer_append_c (&buf, 0);
fclose (fp);
struct parser parser;
parser_init (&parser, buf.s, buf.len - 1);
const char *e = NULL;
struct item *program = parser_run (&parser, &e);
#ifndef NDEBUG
printf ("\x1b[1m%s\x1b[0m\n", buf.s);
print_tree (program, 0);
printf ("\n\n");
#endif
free (buf.s);
if (e) {
printf ("%s: %s\n", "parse error", e);
return 1;
}
parser_free (&parser);
struct context ctx;
context_init (&ctx);
if (!init_runtime_library (&ctx))
printf ("%s\n", "runtime library initialization failed");
struct item *result = NULL;
(void) execute (&ctx, program, &result);
item_free_list (result);
item_free_list (program);
const char *failure = ctx.error;
if (ctx.memory_failure)
failure = "memory allocation failure";
if (failure)
printf ("%s: %s\n", "runtime error", failure);
context_free (&ctx);
return 0;
}

71
interpreter.c Normal file
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@ -0,0 +1,71 @@
/*
* interpreter.c: test interpreter
*
* Copyright (c) 2017, Přemysl Janouch <p.janouch@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 "ell.c"
int
main (int argc, char *argv[]) {
FILE *fp = stdin;
if (argc > 1 && !(fp = fopen (argv[1], "rb"))) {
fprintf (stderr, "%s: %s\n", argv[1], strerror (errno));
return 1;
}
int c;
struct buffer buf = BUFFER_INITIALIZER;
while ((c = fgetc (fp)) != EOF)
buffer_append_c (&buf, c);
buffer_append_c (&buf, 0);
fclose (fp);
struct parser parser;
parser_init (&parser, buf.s, buf.len - 1);
const char *e = NULL;
struct item *program = parser_run (&parser, &e);
#ifndef NDEBUG
printf ("\x1b[1m%s\x1b[0m\n", buf.s);
print_tree (program, 0);
printf ("\n\n");
#endif
free (buf.s);
if (e) {
printf ("%s: %s\n", "parse error", e);
return 1;
}
parser_free (&parser);
struct context ctx;
context_init (&ctx);
if (!init_runtime_library (&ctx))
printf ("%s\n", "runtime library initialization failed");
struct item *result = NULL;
(void) execute (&ctx, program, &result);
item_free_list (result);
item_free_list (program);
const char *failure = ctx.error;
if (ctx.memory_failure)
failure = "memory allocation failure";
if (failure)
printf ("%s: %s\n", "runtime error", failure);
context_free (&ctx);
return 0;
}