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- #include "defs.h"
- #include <signal.h>
-
- #ifdef MACINTOSH
- #include <console.h>
- #endif
-
- #define VERSION "Berkeley yacc version 1.8.2 (C or perl)"
-
- char dflag;
- char lflag;
- char rflag;
- char tflag;
- char vflag;
-
- char *myname = PROGRAM;
-
- char *file_prefix = "y";
- char *temp_form;
-
- int prefix_changed = 0;
- char *define_prefix = "YY";
- char *symbol_prefix = "yy";
-
- Language language = C;
- char* c_suffixes[] = { ".code.c", ".tab.h", ".tab.c", ".output" };
- char* perl_suffixes[] = { ".code.pl", ".tab.ph", ".tab.pl", ".output" };
- char** suffixes = c_suffixes;
-
- int lineno;
- int outline;
-
- char *action_file_name;
- char *code_file_name;
- char *defines_file_name;
- char *input_file_name = "";
- char *output_file_name;
- char *text_file_name;
- char *union_file_name;
- char *verbose_file_name;
-
- FILE *action_file; /* a temp file, used to save actions associated */
- /* with rules until the parser is written */
- 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 *union_file; /* a temp file, used to save the union */
- /* definition until all symbol have been */
- /* defined */
- FILE *verbose_file; /* y.output */
-
- int nitems;
- int nrules;
- int nsyms;
- int ntokens;
- int nvars;
-
- int start_symbol;
- char **symbol_name;
- short *symbol_value;
- short *symbol_prec;
- char *symbol_assoc;
-
- short *ritem;
- short *rlhs;
- short *rrhs;
- short *rprec;
- char *rassoc;
- short **derives;
- char *nullable;
-
- #ifdef AMIGA
- long __near __STKNEED = 1000;
- #endif
-
- #if __STDC__
- extern char *mktemp(char *template);
- #else
- extern char *mktemp();
- #endif
-
- #if __STDC__ != 1
- extern char *getenv();
- #endif
-
- #if __STDC__
- void done(int k)
- #else
- void done(k)
- int k;
- #endif
- {
- if (action_file) { fclose(action_file); unlink(action_file_name); }
- if (text_file) { fclose(text_file); unlink(text_file_name); }
- if (union_file) { fclose(union_file); unlink(union_file_name); }
- exit(k);
- }
-
-
- #if __STDC__
- static SIG_TYPE onintr(int junk)
- #else
- static SIG_TYPE onintr()
- #endif
- {
- done(1);
- }
-
-
- #if __STDC__
- static void set_signals(void)
- #else
- static void set_signals()
- #endif
- {
- #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
- }
-
-
- #if __STDC__
- static void usage(void)
- #else
- static void usage()
- #endif
- {
- fprintf(stderr,
- "usage: %s [-CPcdlrtv] [-b file_prefix] [-p symbol_prefix] filename\n",
- myname);
- exit(1);
- }
-
-
- #if __STDC__
- static void getargs(int argc, char *argv[])
- #else
- static void getargs(argc, argv)
- int argc;
- char *argv[];
- #endif
- {
- register int i;
- register char *s;
-
- if (argc > 0) myname = argv[0];
-
- s = strrchr(myname, '/');
- if (s == (char *) NULL) {
- #ifdef AMIGA
- s = strrchr(myname, ':');
- if (s == (char *) NULL)
- s = myname;
- else
- s++;
- #else
- s = myname;
- #endif
- }
- else
- s++;
- temp_form = MALLOC(strlen(s) + sizeof(".XXXXXXX"));
- sprintf(temp_form, "%s.XXXXXXX", s);
-
- for (i = 1; i < argc; ++i)
- {
- s = argv[i];
- if (*s != '-') break;
- switch (*++s)
- {
- case '\0':
- input_file = stdin;
- if (i + 1 < argc) usage();
- return;
-
- case '-':
- ++i;
- goto no_more_options;
-
- case 'b':
- if (*++s)
- file_prefix = s;
- else if (++i < argc)
- file_prefix = argv[i];
- else
- usage();
- continue;
-
- case 'c':
- case 'C':
- language = C;
- suffixes = c_suffixes;
- break;
-
- case 'd':
- dflag = 1;
- break;
-
- case 'l':
- lflag = 1;
- break;
-
- case 'p':
- if (*++s)
- symbol_prefix = s;
- else if (++i < argc)
- symbol_prefix = argv[i];
- else
- usage();
- continue;
-
- case 'P':
- language = PERL;
- suffixes = perl_suffixes;
- break;
-
- case 'r':
- rflag = 1;
- break;
-
- case 't':
- tflag = 1;
- break;
-
- case 'v':
- vflag = 1;
- break;
-
- case 'V':
- fprintf(stderr, "%s: %s\n", myname, VERSION);
- exit(1);
-
- default:
- usage();
- }
-
- for (;;)
- {
- switch (*++s)
- {
- case '\0':
- goto end_of_option;
-
- case 'c':
- case 'C':
- language = C;
- suffixes = c_suffixes;
- break;
-
- case 'd':
- dflag = 1;
- break;
-
- case 'l':
- lflag = 1;
- break;
-
- case 'P':
- language = PERL;
- suffixes = perl_suffixes;
- break;
-
- case 'r':
- rflag = 1;
- break;
-
- case 't':
- tflag = 1;
- break;
-
- case 'v':
- vflag = 1;
- break;
-
- case 'V':
- fprintf(stderr, "%s: %s\n", myname, VERSION);
- exit(1);
-
- default:
- usage();
- }
- }
- end_of_option:;
- }
-
- if (language == PERL && rflag)
- fprintf(stderr, "%s: Warning: -r not recommended with Perl mode.\n",
- myname);
-
- no_more_options:;
- if (i + 1 != argc) usage();
- input_file_name = argv[i];
- }
-
-
- #if __STDC__
- char *allocate(unsigned n)
- #else
- char *allocate(n)
- unsigned n;
- #endif
- {
- register char *p;
-
- p = NULL;
- if (n)
- {
- p = CALLOC(1, n);
- }
- return (p);
- }
-
-
- #if __STDC__
- char *my_calloc(unsigned k, unsigned n)
- #else
- char *my_calloc(k, n)
- unsigned k;
- unsigned n;
- #endif
- {
- #ifndef __STDC__
- extern char *calloc();
- #endif
- register char *p;
-
- p = calloc(k, n);
- if (!p) no_space();
- return (p);
- }
-
-
- #if __STDC__
- char *my_malloc(unsigned n)
- #else
- char *my_malloc(n)
- unsigned n;
- #endif
- {
- #ifndef __STDC__
- extern char *malloc();
- #endif
- register char *p;
-
- p = malloc(n);
- if (!p) no_space();
- return (p);
- }
-
-
- #if __STDC__
- char *my_realloc(char *p, unsigned n)
- #else
- char *my_realloc(p, n)
- char *p;
- unsigned n;
- #endif
- {
- #ifndef __STDC__
- extern char *realloc();
- #endif
-
- p = realloc(p, n);
- if (!p) no_space();
- return (p);
- }
-
-
- #if __STDC__
- static void create_file_names(void)
- #else
- static void create_file_names()
- #endif
- {
- int i, len;
- char *tmpdir;
-
- #ifndef MACINTOSH
-
- tmpdir = getenv("TMPDIR");
- #ifdef AMIGA
- if (tmpdir == (char *) NULL) tmpdir = "T:";
- #else
- if (tmpdir == (char *) NULL) tmpdir = "/tmp";
- #endif /* amiga */
-
- len = strlen(tmpdir);
- i = len + strlen(temp_form) + 1;
-
- #ifdef AMIGA
- if (len && tmpdir[len-1] != ':' && tmpdir[len-1] != '/')
- ++i;
- #else
- if (len && tmpdir[len-1] != '/')
- ++i;
- #endif /* AMIGA */
-
- #endif /* MACINTOSH */
-
- #ifdef MACINTOSH
- action_file_name = MALLOC(L_tmpnam);
- text_file_name = MALLOC(L_tmpnam);
- union_file_name = MALLOC(L_tmpnam);
- #else
- action_file_name = MALLOC(i);
- text_file_name = MALLOC(i);
- union_file_name = MALLOC(i);
-
- strcpy(action_file_name, tmpdir);
- strcpy(text_file_name, tmpdir);
- strcpy(union_file_name, tmpdir);
-
- #ifdef AMIGA
- if (len && tmpdir[len-1] != ':' && tmpdir[len - 1] != '/') {
- action_file_name[len] = '/';
- text_file_name[len] = '/';
- union_file_name[len] = '/';
- ++len;
- }
- #else
- if (len && tmpdir[len - 1] != '/') {
- action_file_name[len] = '/';
- text_file_name[len] = '/';
- union_file_name[len] = '/';
- ++len;
- }
- #endif
-
- strcpy(action_file_name + len, temp_form);
- strcpy(text_file_name + len, temp_form);
- strcpy(union_file_name + len, temp_form);
-
- FREE(temp_form);
- temp_form = (char *) NULL;
-
- action_file_name[len + 5] = 'a';
- text_file_name[len + 5] = 't';
- union_file_name[len + 5] = 'u';
-
- #endif /* MACINTOSH, about 39 lines up */
-
- #ifdef MACINTOSH
- tmpnam(action_file_name);
- tmpnam(text_file_name);
- tmpnam(union_file_name);
- #else
- mktemp(action_file_name);
- mktemp(text_file_name);
- mktemp(union_file_name);
- #endif
-
- len = strlen(file_prefix);
-
- output_file_name = MALLOC(len + strlen(suffixes[OUTPUT_SUFFIX]) + 1);
- strcpy(output_file_name, file_prefix);
- strcpy(output_file_name + len, suffixes[OUTPUT_SUFFIX]);
-
- if (rflag)
- {
- code_file_name = MALLOC(len + strlen(suffixes[CODE_SUFFIX]) + 1);
- strcpy(code_file_name, file_prefix);
- strcpy(code_file_name + len, suffixes[CODE_SUFFIX]);
- }
- else
- code_file_name = output_file_name;
-
- if (dflag)
- {
- defines_file_name = MALLOC(len + strlen(suffixes[DEFINES_SUFFIX]) + 1);
- strcpy(defines_file_name, file_prefix);
- strcpy(defines_file_name + len, suffixes[DEFINES_SUFFIX]);
- }
-
- if (vflag)
- {
- verbose_file_name = MALLOC(len + strlen(suffixes[VERBOSE_SUFFIX]) + 1);
- strcpy(verbose_file_name, file_prefix);
- strcpy(verbose_file_name + len, suffixes[VERBOSE_SUFFIX]);
- }
- }
-
-
- #if __STDC__
- static void open_files(void)
- #else
- static void open_files()
- #endif
- {
- create_file_names();
-
- if (input_file == 0)
- {
- input_file = fopen(input_file_name, "r");
- if (input_file == 0)
- open_error(input_file_name);
- }
-
- action_file = fopen(action_file_name, "w");
- if (action_file == 0)
- open_error(action_file_name);
-
- text_file = fopen(text_file_name, "w");
- 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);
- union_file = fopen(union_file_name, "w");
- if (union_file == 0)
- open_error(union_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;
- }
-
-
- #if __STDC__
- static void fix_defsym_prefix(void)
- #else
- static void fix_defsym_prefix()
- #endif
- {
- char *from;
- int num_lower = 0;
- char *to;
-
- if (strcmp(symbol_prefix, "yy") == 0)
- return;
-
- from = symbol_prefix;
-
- /* check first character for [A-Za-z_] */
- if (!isalpha(*from) && *from != '_') {
- fprintf(stderr,
- "%s: symbol prefix (%s) must start with an underline or letter\n",
- myname, symbol_prefix);
- exit(1);
- }
-
- for (/* void */ ; *from; from++) {
- if (isalnum(*from) || *from == '_') {
- if (islower(*from))
- num_lower++;
- }
- else {
- fprintf(stderr,
- "%s: invalid character (%c) in symbol prefix (%s)\n",
- myname, isgraph(*from) ? *from : '?', symbol_prefix);
- exit(1);
- }
- }
- if (num_lower == 0) {
- fprintf(stderr,
- "%s: symbol prefix (%s) must contain at least 1 lower case character\n",
- myname, symbol_prefix);
- exit(1);
- }
- define_prefix = MALLOC((from - symbol_prefix) + 1);
- for (to = define_prefix, from = symbol_prefix; *from; from++) {
- if (islower(*from))
- *to++ = toupper(*from);
- else
- *to++ = *from;
- }
- *to = *from;
- prefix_changed = 1;
- }
-
- #if __STDC__
- int main(int argc, char *argv[])
- #else
- int main(argc, argv)
- int argc;
- char *argv[];
- #endif
- {
-
- #ifdef MACINTOSH
- argc = ccommand(&argv);
- #endif /* MACINTOSH */
- set_signals();
- getargs(argc, argv);
- fix_defsym_prefix();
- open_files();
- reader();
- lr0();
- lalr();
- make_parser();
- verbose();
- output();
- done(0);
- /*NOTREACHED*/
- }
-