69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
/*
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* interpreter.c: test interpreter
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*
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* Copyright (c) 2017, Přemysl Janouch <p@janouch.name>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#include "ell.c"
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int
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main (int argc, char *argv[]) {
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FILE *fp = stdin;
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if (argc > 1 && !(fp = fopen (argv[1], "rb"))) {
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fprintf (stderr, "%s: %s\n", argv[1], strerror (errno));
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return 1;
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}
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int c;
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struct ell_buffer buf = ell_buffer_make ();
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while ((c = fgetc (fp)) != EOF)
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ell_buffer_append_c (&buf, c);
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ell_buffer_append_c (&buf, 0);
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fclose (fp);
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struct ell_parser p = ell_parser_make (buf.s, buf.len - 1);
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const char *e = NULL;
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struct ell_v *program = ell_parser_run (&p, &e);
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free (buf.s);
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if (e) {
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printf ("%s: %s\n", "parse error", e);
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return 1;
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}
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ell_parser_free (&p);
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struct ell ell = ell_make ();
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if (!ell_std_initialize (&ell))
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printf ("%s\n", "runtime library initialization failed");
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// In this one place we optimistically expect allocation to succeed
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struct ell_v *args = NULL, **tail = &args;
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for (int i = 2; i < argc; i++)
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tail = &(*tail = ell_string (argv[i], strlen (argv[i])))->next;
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struct ell_v *result = NULL;
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(void) ell_eval_block (&ell, program, args, &result);
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ell_free_seq (result);
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ell_free_seq (program);
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const char *failure = ell.error;
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if (ell.memory_failure)
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failure = "memory allocation failure";
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if (failure)
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printf ("%s: %s\n", "runtime error", failure);
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ell_free (&ell);
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return 0;
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}
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