468 lines
11 KiB
C
468 lines
11 KiB
C
/***********************************************************************/
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/* */
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/* OCaml */
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/* */
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/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
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/* */
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/* Copyright 1996 Institut National de Recherche en Informatique et */
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/* en Automatique. All rights reserved. This file is distributed */
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/* under the terms of the Q Public License version 1.0. */
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/* */
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/***********************************************************************/
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/* Based on public-domain code from Berkeley Yacc */
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/* $Id$ */
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#include <signal.h>
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#include <string.h>
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#include "defs.h"
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#ifdef HAS_UNISTD
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#include <unistd.h>
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#endif
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#include "version.h"
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char dflag;
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char lflag;
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char rflag;
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char tflag;
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char vflag;
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char qflag;
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char sflag;
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char big_endian;
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char *file_prefix = 0;
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char *myname = "yacc";
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#ifdef NO_UNIX
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char temp_form[] = "yacc.X";
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#else
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char temp_form[] = "yacc.XXXXXXX";
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#endif
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int lineno;
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char *virtual_input_file_name = NULL;
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int outline;
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char *action_file_name;
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char *entry_file_name;
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char *code_file_name;
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char *interface_file_name;
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char *defines_file_name;
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char *input_file_name = "";
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char *output_file_name;
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char *text_file_name;
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char *union_file_name;
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char *verbose_file_name;
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#if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__) || (__APPLE__)
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#define HAVE_MKSTEMP
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#endif
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#ifdef HAVE_MKSTEMP
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int action_fd = -1, entry_fd = -1, text_fd = -1, union_fd = -1;
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#endif
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FILE *action_file; /* a temp file, used to save actions associated */
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/* with rules until the parser is written */
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FILE *entry_file;
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FILE *code_file; /* y.code.c (used when the -r option is specified) */
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FILE *defines_file; /* y.tab.h */
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FILE *input_file; /* the input file */
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FILE *output_file; /* y.tab.c */
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FILE *text_file; /* a temp file, used to save text until all */
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/* symbols have been defined */
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FILE *union_file; /* a temp file, used to save the union */
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/* definition until all symbol have been */
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/* defined */
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FILE *verbose_file; /* y.output */
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FILE *interface_file;
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int nitems;
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int nrules;
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int ntotalrules;
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int nsyms;
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int ntokens;
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int nvars;
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int start_symbol;
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char **symbol_name;
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short *symbol_value;
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short *symbol_prec;
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char *symbol_assoc;
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char **symbol_tag;
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char *symbol_true_token;
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short *ritem;
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short *rlhs;
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short *rrhs;
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short *rprec;
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char *rassoc;
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short **derives;
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char *nullable;
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#if !defined(HAVE_MKSTEMP)
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extern char *mktemp(char *);
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#endif
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extern char *getenv(const char *);
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void done(int k)
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{
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#ifdef HAVE_MKSTEMP
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if (action_fd != -1)
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unlink(action_file_name);
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if (entry_fd != -1)
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unlink(entry_file_name);
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if (text_fd != -1)
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unlink(text_file_name);
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if (union_fd != -1)
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unlink(union_file_name);
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#else
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if (action_file) { fclose(action_file); unlink(action_file_name); }
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if (entry_file) { fclose(entry_file); unlink(entry_file_name); }
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if (text_file) { fclose(text_file); unlink(text_file_name); }
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if (union_file) { fclose(union_file); unlink(union_file_name); }
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#endif
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if (output_file && k > 0) {
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fclose(output_file); unlink(output_file_name);
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}
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if (interface_file && k > 0) {
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fclose(interface_file); unlink(interface_file_name);
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}
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exit(k);
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}
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void onintr(int dummy)
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{
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done(1);
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}
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void set_signals(void)
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{
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#ifdef SIGINT
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if (signal(SIGINT, SIG_IGN) != SIG_IGN)
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signal(SIGINT, onintr);
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#endif
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#ifdef SIGTERM
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if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
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signal(SIGTERM, onintr);
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#endif
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#ifdef SIGHUP
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if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
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signal(SIGHUP, onintr);
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#endif
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}
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void usage(void)
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{
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fprintf(stderr, "usage: %s [-v] [-q] [-b file_prefix] filename\n",
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myname);
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exit(1);
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}
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void getargs(int argc, char **argv)
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{
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register int i;
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register char *s;
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if (argc > 0) myname = argv[0];
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for (i = 1; i < argc; ++i)
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{
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s = argv[i];
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if (*s != '-') break;
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switch (*++s)
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{
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case '\0':
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input_file = stdin;
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file_prefix = "stdin";
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if (i + 1 < argc) usage();
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return;
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case '-':
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++i;
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goto no_more_options;
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case 'v':
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if (!strcmp (argv[i], "-version")){
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printf ("The OCaml parser generator, version "
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OCAML_VERSION "\n");
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exit (0);
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}else if (!strcmp (argv[i], "-vnum")){
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printf (OCAML_VERSION "\n");
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exit (0);
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}else{
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vflag = 1;
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}
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break;
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case 'q':
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qflag = 1;
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break;
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case 'b':
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if (*++s)
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file_prefix = s;
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else if (++i < argc)
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file_prefix = argv[i];
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else
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usage();
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continue;
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default:
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usage();
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}
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for (;;)
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{
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switch (*++s)
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{
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case '\0':
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goto end_of_option;
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case 'v':
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vflag = 1;
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break;
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case 'q':
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qflag = 1;
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break;
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default:
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usage();
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}
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}
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end_of_option:;
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}
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no_more_options:;
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if (i + 1 != argc) usage();
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input_file_name = argv[i];
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if (file_prefix == 0) {
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int len;
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len = strlen(argv[i]);
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file_prefix = malloc(len + 1);
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if (file_prefix == 0) no_space();
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strcpy(file_prefix, argv[i]);
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while (len > 0) {
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len--;
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if (file_prefix[len] == '.') {
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file_prefix[len] = 0;
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break;
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}
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}
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}
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}
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char *
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allocate(unsigned int n)
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{
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register char *p;
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p = NULL;
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if (n)
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{
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p = CALLOC(1, n);
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if (!p) no_space();
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}
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return (p);
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}
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void create_file_names(void)
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{
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int i, len;
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char *tmpdir;
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#ifdef NO_UNIX
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len = 0;
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i = sizeof(temp_form);
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#else
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tmpdir = getenv("TMPDIR");
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if (tmpdir == 0) tmpdir = "/tmp";
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len = strlen(tmpdir);
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i = len + sizeof(temp_form);
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if (len && tmpdir[len-1] != '/')
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++i;
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#endif
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action_file_name = MALLOC(i);
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if (action_file_name == 0) no_space();
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entry_file_name = MALLOC(i);
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if (entry_file_name == 0) no_space();
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text_file_name = MALLOC(i);
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if (text_file_name == 0) no_space();
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union_file_name = MALLOC(i);
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if (union_file_name == 0) no_space();
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#ifndef NO_UNIX
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strcpy(action_file_name, tmpdir);
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strcpy(entry_file_name, tmpdir);
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strcpy(text_file_name, tmpdir);
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strcpy(union_file_name, tmpdir);
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if (len && tmpdir[len - 1] != '/')
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{
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action_file_name[len] = '/';
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entry_file_name[len] = '/';
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text_file_name[len] = '/';
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union_file_name[len] = '/';
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++len;
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}
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#endif
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strcpy(action_file_name + len, temp_form);
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strcpy(entry_file_name + len, temp_form);
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strcpy(text_file_name + len, temp_form);
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strcpy(union_file_name + len, temp_form);
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action_file_name[len + 5] = 'a';
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entry_file_name[len + 5] = 'e';
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text_file_name[len + 5] = 't';
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union_file_name[len + 5] = 'u';
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#ifndef NO_UNIX
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#ifdef HAVE_MKSTEMP
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action_fd = mkstemp(action_file_name);
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if (action_fd == -1)
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open_error(action_file_name);
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entry_fd = mkstemp(entry_file_name);
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if (entry_fd == -1)
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open_error(entry_file_name);
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text_fd = mkstemp(text_file_name);
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if (text_fd == -1)
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open_error(text_file_name);
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union_fd = mkstemp(union_file_name);
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if (union_fd == -1)
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open_error(union_file_name);
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#else
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mktemp(action_file_name);
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mktemp(entry_file_name);
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mktemp(text_file_name);
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mktemp(union_file_name);
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#endif
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#endif
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len = strlen(file_prefix);
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output_file_name = MALLOC(len + 7);
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if (output_file_name == 0)
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no_space();
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strcpy(output_file_name, file_prefix);
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strcpy(output_file_name + len, OUTPUT_SUFFIX);
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code_file_name = output_file_name;
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if (vflag)
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{
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verbose_file_name = MALLOC(len + 8);
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if (verbose_file_name == 0)
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no_space();
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strcpy(verbose_file_name, file_prefix);
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strcpy(verbose_file_name + len, VERBOSE_SUFFIX);
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}
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interface_file_name = MALLOC(len + 8);
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if (interface_file_name == 0)
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no_space();
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strcpy(interface_file_name, file_prefix);
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strcpy(interface_file_name + len, INTERFACE_SUFFIX);
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}
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void open_files(void)
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{
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create_file_names();
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if (input_file == 0)
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{
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input_file = fopen(input_file_name, "r");
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if (input_file == 0)
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open_error(input_file_name);
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}
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#ifdef HAVE_MKSTEMP
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action_file = fdopen(action_fd, "w");
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#else
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action_file = fopen(action_file_name, "w");
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#endif
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if (action_file == 0)
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open_error(action_file_name);
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#ifdef HAVE_MKSTEMP
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entry_file = fdopen(entry_fd, "w");
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#else
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entry_file = fopen(entry_file_name, "w");
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#endif
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if (entry_file == 0)
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open_error(entry_file_name);
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#ifdef HAVE_MKSTEMP
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text_file = fdopen(text_fd, "w");
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#else
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text_file = fopen(text_file_name, "w");
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#endif
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if (text_file == 0)
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open_error(text_file_name);
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if (vflag)
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{
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verbose_file = fopen(verbose_file_name, "w");
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if (verbose_file == 0)
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open_error(verbose_file_name);
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}
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if (dflag)
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{
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defines_file = fopen(defines_file_name, "w");
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if (defines_file == 0)
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open_error(defines_file_name);
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#ifdef HAVE_MKSTEMP
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union_file = fdopen(union_fd, "w");
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#else
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union_file = fopen(union_file_name, "w");
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#endif
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if (union_file == 0)
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open_error(union_file_name);
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}
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output_file = fopen(output_file_name, "w");
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if (output_file == 0)
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open_error(output_file_name);
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if (rflag)
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{
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code_file = fopen(code_file_name, "w");
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if (code_file == 0)
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open_error(code_file_name);
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}
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else
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code_file = output_file;
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interface_file = fopen(interface_file_name, "w");
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if (interface_file == 0)
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open_error(interface_file_name);
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}
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int main(int argc, char **argv)
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{
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set_signals();
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getargs(argc, argv);
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open_files();
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reader();
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lr0();
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lalr();
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make_parser();
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verbose();
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output();
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done(0);
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/*NOTREACHED*/
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return 0;
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}
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