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/*
* 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 ell_buffer buf = ELL_BUFFER_INITIALIZER;
while ((c = fgetc (fp)) != EOF)
ell_buffer_append_c (&buf, c);
ell_buffer_append_c (&buf, 0);
fclose (fp);
struct ell_parser p;
ell_parser_init (&p, buf.s, buf.len - 1);
const char *e = NULL;
struct ell_v *program = ell_parser_run (&p, &e);
free (buf.s);
if (e) {
printf ("%s: %s\n", "parse error", e);
return 1;
}
ell_parser_free (&p);
struct ell ell;
ell_init (&ell);
if (!ell_std_initialize (&ell))
printf ("%s\n", "runtime library initialization failed");
// In this one place we optimistically expect allocation to succeed
struct ell_v *args = NULL, **tail = &args;
for (int i = 2; i < argc; i++)
tail = &(*tail = ell_string (argv[i], strlen (argv[i])))->next;
struct ell_v *result = NULL;
(void) ell_eval_block (&ell, program, args, &result);
ell_free_seq (result);
ell_free_seq (program);
const char *failure = ell.error;
if (ell.memory_failure)
failure = "memory allocation failure";
if (failure)
printf ("%s: %s\n", "runtime error", failure);
ell_free (&ell);
return 0;
}
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