From 455845d078f39f3969139c6a0729e0b081cfa159 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C5=99emysl=20Janouch?= Date: Sun, 21 May 2017 12:47:09 +0200 Subject: Split out the interpreter --- interpreter.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 interpreter.c (limited to 'interpreter.c') diff --git a/interpreter.c b/interpreter.c new file mode 100644 index 0000000..4159e08 --- /dev/null +++ b/interpreter.c @@ -0,0 +1,71 @@ +/* + * interpreter.c: test interpreter + * + * Copyright (c) 2017, Přemysl Janouch + * + * 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; +} + -- cgit v1.2.3