Ekdohibs
/
ocaml
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
ocaml/yacc/main.c

444 lines
10 KiB
C
Raw Blame History

/**************************************************************************/
/* */
/* OCaml */
/* */
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. */
/* */
/* All rights reserved. This file is distributed under the terms of */
/* the GNU Lesser General Public License version 2.1, with the */
/* special exception on linking described in the file LICENSE. */
/* */
/**************************************************************************/
/* Based on public-domain code from Berkeley Yacc */
#include <signal.h>
#include <string.h>
#include "defs.h"
#ifdef HAS_UNISTD
#include <unistd.h>
#endif
#include "version.h"
char dflag;
char lflag;
char rflag;
char tflag;
char vflag;
char qflag;
char eflag;
char sflag;
char big_endian;
char *file_prefix = 0;
char *myname = "yacc";
char temp_form[] = "yacc.XXXXXXX";
#ifdef _WIN32
char dirsep = '\\';
#else
char dirsep = '/';
#endif
int lineno;
char *virtual_input_file_name = NULL;
int outline;
char *action_file_name;
char *entry_file_name;
char *code_file_name;
char *interface_file_name;
char *defines_file_name;
char *input_file_name = "";
char *output_file_name;
char *text_file_name;
char *verbose_file_name;
#ifdef HAS_MKSTEMP
int action_fd = -1, entry_fd = -1, text_fd = -1;
#endif
FILE *action_file; /* a temp file, used to save actions associated */
/* with rules until the parser is written */
FILE *entry_file;
FILE *code_file; /* y.code.c (used when the -r option is specified) */
FILE *defines_file; /* y.tab.h */
FILE *input_file; /* the input file */
FILE *output_file; /* y.tab.c */
FILE *text_file; /* a temp file, used to save text until all */
/* symbols have been defined */
FILE *verbose_file; /* y.output */
FILE *interface_file;
int nitems;
int nrules;
int ntotalrules;
int nsyms;
int ntokens;
int nvars;
int start_symbol;
char **symbol_name;
short *symbol_value;
short *symbol_prec;
char *symbol_assoc;
char **symbol_tag;
char *symbol_true_token;
short *ritem;
short *rlhs;
short *rrhs;
short *rprec;
char *rassoc;
short **derives;
char *nullable;
#if !defined(HAS_MKSTEMP)
extern char *mktemp(char *);
#endif
void done(int k)
{
#ifdef HAS_MKSTEMP
if (action_fd != -1)
unlink(action_file_name);
if (entry_fd != -1)
unlink(entry_file_name);
if (text_fd != -1)
unlink(text_file_name);
#else
if (action_file) { fclose(action_file); unlink(action_file_name); }
if (entry_file) { fclose(entry_file); unlink(entry_file_name); }
if (text_file) { fclose(text_file); unlink(text_file_name); }
#endif
if (output_file && k > 0) {
fclose(output_file); unlink(output_file_name);
}
if (interface_file && k > 0) {
fclose(interface_file); unlink(interface_file_name);
}
exit(k);
}
void onintr(int dummy)
{
done(1);
}
void set_signals(void)
{
#ifdef SIGINT
if (signal(SIGINT, SIG_IGN) != SIG_IGN)
signal(SIGINT, onintr);
#endif
#ifdef SIGTERM
if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
signal(SIGTERM, onintr);
#endif
#ifdef SIGHUP
if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
signal(SIGHUP, onintr);
#endif
}
void usage(void)
{
fprintf(stderr, "usage: %s [-v] [--strict] [-q] [-b file_prefix] filename\n",
myname);
exit(1);
}
void getargs(int argc, char **argv)
{
register int i;
register char *s;
if (argc > 0) myname = argv[0];
for (i = 1; i < argc; ++i)
{
s = argv[i];
if (*s != '-') break;
switch (*++s)
{
case '\0':
input_file = stdin;
file_prefix = "stdin";
if (i + 1 < argc) usage();
return;
case '-':
if (!strcmp (argv[i], "--strict")){
eflag = 1;
goto end_of_option;
}
++i;
goto no_more_options;
case 'v':
if (!strcmp (argv[i], "-version")){
printf ("The OCaml parser generator, version "
OCAML_VERSION "\n");
exit (0);
}else if (!strcmp (argv[i], "-vnum")){
printf (OCAML_VERSION "\n");
exit (0);
}else{
vflag = 1;
}
break;
case 'q':
qflag = 1;
break;
case 'b':
if (*++s)
file_prefix = s;
else if (++i < argc)
file_prefix = argv[i];
else
usage();
continue;
default:
usage();
}
for (;;)
{
switch (*++s)
{
case '\0':
goto end_of_option;
case 'v':
vflag = 1;
break;
case 'q':
qflag = 1;
break;
default:
usage();
}
}
end_of_option:;
}
no_more_options:;
if (i + 1 != argc) usage();
input_file_name = argv[i];
if (file_prefix == 0) {
int len;
len = strlen(argv[i]);
file_prefix = malloc(len + 1);
if (file_prefix == 0) no_space();
strcpy(file_prefix, argv[i]);
while (len > 0) {
len--;
if (file_prefix[len] == '.') {
file_prefix[len] = 0;
break;
}
}
}
}
char *
allocate(unsigned int n)
{
register char *p;
p = NULL;
if (n)
{
p = CALLOC(1, n);
if (!p) no_space();
}
return (p);
}
void create_file_names(void)
{
int i, len;
char *tmpdir;
#ifdef _WIN32
tmpdir = getenv("TEMP");
if (tmpdir == 0) tmpdir = ".";
#else
tmpdir = getenv("TMPDIR");
if (tmpdir == 0) tmpdir = "/tmp";
#endif
len = strlen(tmpdir);
i = len + sizeof(temp_form);
if (len && tmpdir[len-1] != dirsep)
++i;
action_file_name = MALLOC(i);
if (action_file_name == 0) no_space();
entry_file_name = MALLOC(i);
if (entry_file_name == 0) no_space();
text_file_name = MALLOC(i);
if (text_file_name == 0) no_space();
strcpy(action_file_name, tmpdir);
strcpy(entry_file_name, tmpdir);
strcpy(text_file_name, tmpdir);
if (len && tmpdir[len - 1] != dirsep)
{
action_file_name[len] = dirsep;
entry_file_name[len] = dirsep;
text_file_name[len] = dirsep;
++len;
}
strcpy(action_file_name + len, temp_form);
strcpy(entry_file_name + len, temp_form);
strcpy(text_file_name + len, temp_form);
action_file_name[len + 5] = 'a';
entry_file_name[len + 5] = 'e';
text_file_name[len + 5] = 't';
#ifdef HAS_MKSTEMP
action_fd = mkstemp(action_file_name);
if (action_fd == -1)
open_error(action_file_name);
entry_fd = mkstemp(entry_file_name);
if (entry_fd == -1)
open_error(entry_file_name);
text_fd = mkstemp(text_file_name);
if (text_fd == -1)
open_error(text_file_name);
#else
mktemp(action_file_name);
mktemp(entry_file_name);
mktemp(text_file_name);
#endif
len = strlen(file_prefix);
output_file_name = MALLOC(len + 7);
if (output_file_name == 0)
no_space();
strcpy(output_file_name, file_prefix);
strcpy(output_file_name + len, OUTPUT_SUFFIX);
code_file_name = output_file_name;
if (vflag)
{
verbose_file_name = MALLOC(len + 8);
if (verbose_file_name == 0)
no_space();
strcpy(verbose_file_name, file_prefix);
strcpy(verbose_file_name + len, VERBOSE_SUFFIX);
}
interface_file_name = MALLOC(len + 8);
if (interface_file_name == 0)
no_space();
strcpy(interface_file_name, file_prefix);
strcpy(interface_file_name + len, INTERFACE_SUFFIX);
}
void open_files(void)
{
create_file_names();
if (input_file == 0)
{
input_file = fopen(input_file_name, "r");
if (input_file == 0)
open_error(input_file_name);
}
#ifdef HAS_MKSTEMP
action_file = fdopen(action_fd, "w");
#else
action_file = fopen(action_file_name, "w");
#endif
if (action_file == 0)
open_error(action_file_name);
#ifdef HAS_MKSTEMP
entry_file = fdopen(entry_fd, "w");
#else
entry_file = fopen(entry_file_name, "w");
#endif
if (entry_file == 0)
open_error(entry_file_name);
#ifdef HAS_MKSTEMP
text_file = fdopen(text_fd, "w");
#else
text_file = fopen(text_file_name, "w");
#endif
if (text_file == 0)
open_error(text_file_name);
if (vflag)
{
verbose_file = fopen(verbose_file_name, "w");
if (verbose_file == 0)
open_error(verbose_file_name);
}
if (dflag)
{
defines_file = fopen(defines_file_name, "w");
if (defines_file == 0)
open_error(defines_file_name);
}
output_file = fopen(output_file_name, "w");
if (output_file == 0)
open_error(output_file_name);
if (rflag)
{
code_file = fopen(code_file_name, "w");
if (code_file == 0)
open_error(code_file_name);
}
else
code_file = output_file;
interface_file = fopen(interface_file_name, "w");
if (interface_file == 0)
open_error(interface_file_name);
}
int main(int argc, char **argv)
{
set_signals();
getargs(argc, argv);
open_files();
reader();
lr0();
lalr();
make_parser();
verbose();
if (eflag && SRtotal + RRtotal > 0) forbidden_conflicts();
output();
done(0);
/*NOTREACHED*/
return 0;
}
Reference in New Issue View Git Blame Copy Permalink