X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/a889d44ce266967929df697d1ce264547ac98d9a..e9f87b5b7df2e328d2e4196d276c0d96594c906b:/src/main.c diff --git a/src/main.c b/src/main.c index 9bff77a2..55dca624 100644 --- a/src/main.c +++ b/src/main.c @@ -1,66 +1,46 @@ /* Top level entry point of bison, - Copyright (C) 1984, 1986, 1989, 1992, 1995 Free Software Foundation, Inc. + Copyright 1984, 1986, 1989, 1992, 1995, 2000, 2001 + Free Software Foundation, Inc. -This file is part of Bison, the GNU Compiler Compiler. + This file is part of Bison, the GNU Compiler Compiler. -Bison is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. + Bison is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. -Bison is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. + Bison is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. -You should have received a copy of the GNU General Public License -along with Bison; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + You should have received a copy of the GNU General Public License + along with Bison; see the file COPYING. If not, write to + the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ -#include #include "system.h" -#include "machine.h" /* for MAXSHORT */ - -extern int lineno; -extern int verboseflag; -extern char *infile; - -/* Nonzero means failure has been detected; don't write a parser file. */ -int failure; +#include "getargs.h" +#include "files.h" +#include "complain.h" +#include "derives.h" +#include "output.h" +#include "reader.h" +#include "lalr.h" +#include "reduce.h" +#include "nullable.h" +#include "print.h" +#include "LR0.h" +#include "conflicts.h" +#include "print_graph.h" +#include "muscle_tab.h" +#include "symtab.h" +#include "lex.h" /* The name this program was run with, for messages. */ char *program_name; -char *printable_version PARAMS((int)); -char *int_to_string PARAMS((int)); -void fatal PARAMS((char *)); -void fatals PARAMS((char *, char *)); -void warn PARAMS((char *)); -void warni PARAMS((char *, int)); -void warns PARAMS((char *, char *)); -void warnss PARAMS((char *, char *, char *)); -void warnsss PARAMS((char *, char *, char *, char *)); -void toomany PARAMS((char *)); -void berror PARAMS((char *)); - -extern void getargs PARAMS((int, char *[])); -extern void openfiles PARAMS((void)); -extern void reader PARAMS((void)); -extern void reduce_grammar PARAMS((void)); -extern void set_derives PARAMS((void)); -extern void set_nullable PARAMS((void)); -extern void generate_states PARAMS((void)); -extern void lalr PARAMS((void)); -extern void initialize_conflicts PARAMS((void)); -extern void verbose PARAMS((void)); -extern void terse PARAMS((void)); -extern void output PARAMS((void)); -extern void done PARAMS((int)); - - -/* VMS complained about using `int'. */ - int main (int argc, char *argv[]) { @@ -69,195 +49,72 @@ main (int argc, char *argv[]) bindtextdomain (PACKAGE, LOCALEDIR); textdomain (PACKAGE); - failure = 0; lineno = 0; - getargs(argc, argv); - openfiles(); + getargs (argc, argv); + + muscle_init (); - /* read the input. Copy some parts of it to fguard, faction, ftable and fattrs. - In file reader.c. - The other parts are recorded in the grammar; see gram.h. */ - reader(); - if (failure) - done(failure); + /* Read the input. Copy some parts of it to FGUARD, FACTION, FTABLE + and FATTRS. In file reader.c. The other parts are recorded in + the grammar; see gram.h. */ + reader (); + if (complain_message_count) + exit (1); - /* find useless nonterminals and productions and reduce the grammar. In - file reduce.c */ - reduce_grammar(); + /* Find useless nonterminals and productions and reduce the grammar. */ + reduce_grammar (); - /* record other info about the grammar. In files derives and nullable. */ - set_derives(); - set_nullable(); + /* Record other info about the grammar. In files derives and + nullable. */ + set_derives (); + set_nullable (); - /* convert to nondeterministic finite state machine. In file LR0. + /* Convert to nondeterministic finite state machine. In file LR0. See state.h for more info. */ - generate_states(); + generate_states (); /* make it deterministic. In file lalr. */ - lalr(); - - /* Find and record any conflicts: places where one token of lookahead is not - enough to disambiguate the parsing. In file conflicts. - Also resolve s/r conflicts based on precedence declarations. */ - initialize_conflicts(); - - /* print information about results, if requested. In file print. */ - if (verboseflag) - verbose(); - else - terse(); - - /* output the tables and the parser to ftable. In file output. */ - output(); - done(failure); - return failure; -} - -/* functions to report errors which prevent a parser from being generated */ - - -/* Return a string containing a printable version of C: - either C itself, or the corresponding \DDD code. */ - -char * -printable_version (int c) -{ - static char buf[10]; - if (c < ' ' || c >= '\177') - sprintf(buf, "\\%o", c); - else - { - buf[0] = c; - buf[1] = '\0'; - } - return buf; -} - -/* Generate a string from the integer I. - Return a ptr to internal memory containing the string. */ - -char * -int_to_string (int i) -{ - static char buf[20]; - sprintf(buf, "%d", i); - return buf; -} - -static void -fatal_banner (void) -{ - if (infile == 0) - fprintf(stderr, _("%s: fatal error: "), program_name); - else - fprintf(stderr, _("%s:%d: fatal error: "), infile, lineno); -} - -/* Print the message S for a fatal error. */ - -void -fatal (char *s) -{ - fatal_banner (); - fputs (s, stderr); - fputc ('\n', stderr); - done (1); -} - - -/* Print a message for a fatal error. Use FMT to construct the message - and incorporate string X1. */ - -void -fatals (char *fmt, char *x1) -{ - fatal_banner (); - fprintf (stderr, fmt, x1); - fputc ('\n', stderr); - done (1); -} - -static void -warn_banner (void) -{ - if (infile == 0) - fprintf(stderr, _("%s: "), program_name); - else - fprintf(stderr, _("%s:%d: "), infile, lineno); - failure = 1; -} - -/* Print a warning message S. */ - -void -warn (char *s) -{ - warn_banner (); - fputs (s, stderr); - fputc ('\n', stderr); -} + lalr (); -/* Print a warning message containing the string for the integer X1. - The message is given by the format FMT. */ + /* Find and record any conflicts: places where one token of + lookahead is not enough to disambiguate the parsing. In file + conflicts. Also resolve s/r conflicts based on precedence + declarations. */ + solve_conflicts (); + conflicts_print (); -void -warni (char *fmt, int x1) -{ - warn_banner (); - fprintf (stderr, fmt, x1); - fputc ('\n', stderr); -} + /* Output file names. */ + compute_output_file_names (); -/* Print a warning message containing the string X1. - The message is given by the format FMT. */ + /* Output the detailed report on the grammar. */ + if (verbose_flag) + print_results (); -void -warns (char *fmt, char *x1) -{ - warn_banner (); - fprintf (stderr, fmt, x1); - fputc ('\n', stderr); -} + /* Stop if there were errors, to avoid trashing previous output + files. */ + if (complain_message_count) + exit (1); -/* Print a warning message containing the two strings X1 and X2. - The message is given by the format FMT. */ + /* Output the VCG graph. */ + if (graph_flag) + print_graph (); -void -warnss (char *fmt, char *x1, char *x2) -{ - warn_banner (); - fprintf (stderr, fmt, x1, x2); - fputc ('\n', stderr); -} + /* Output the tables and the parser to ftable. In file output. */ + output (); -/* Print a warning message containing the 3 strings X1, X2, X3. - The message is given by the format FMT. */ + /* Free the symbol table data structure. */ + free_symtab (); -void -warnsss (char *fmt, char *x1, char *x2, char *x3) -{ - warn_banner (); - fprintf (stderr, fmt, x1, x2, x3); - fputc ('\n', stderr); -} - -/* Print a message for the fatal occurence of more than MAXSHORT - instances of whatever is denoted by the string S. */ - -void -toomany (char *s) -{ - fatal_banner (); - fprintf (stderr, _("too many %s (max %d)"), s, MAXSHORT); - fputc ('\n', stderr); - done (1); -} + reduce_free (); + free_conflicts (); + free_nullable (); + free_derives (); -/* Abort for an internal error denoted by string S. */ + /* If using alloca.c, flush the alloca'ed memory for the benefit of + people running Bison as a library in IDEs. */ +#if C_ALLOCA + alloca (0); +#endif -void -berror (char *s) -{ - fprintf(stderr, _("%s: internal error: %s\n"), program_name, s); - abort(); + return complain_message_count ? EXIT_FAILURE : EXIT_SUCCESS; }