X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/fe01694d7ccf76b2cacbf2d9da30bed07976404d..602bbf31c1fbb83a0e1703e35e33e1e8dc9b0fd2:/src/main.c diff --git a/src/main.c b/src/main.c index ac11f93f..caa451d3 100644 --- a/src/main.c +++ b/src/main.c @@ -1,139 +1,121 @@ /* Top level entry point of bison, - Copyright (C) 1984, 1986, 1989 Free Software Foundation, Inc. + Copyright 1984, 1986, 1989, 1992, 1995, 2000, 2001, 2002 + 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" /* JF for MAXSHORT */ - -extern int lineno; -extern int verboseflag; - -/* Nonzero means failure has been detected; don't write a parser file. */ -int failure; - -/* The name this program was run with, for messages. */ +#include "bitset.h" +#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; -extern void getargs(), openfiles(), reader(), reduce_grammar(); -extern void set_derives(), set_nullable(), generate_states(); -extern void lalr(), initialize_conflicts(), verbose(), terse(); -extern void output(), done(); - - -/* VMS complained about using `int'. */ int -main(argc, argv) -int argc; -char *argv[]; +main (int argc, char *argv[]) { program_name = argv[0]; - failure = 0; + setlocale (LC_ALL, ""); + bindtextdomain (PACKAGE, LOCALEDIR); + textdomain (PACKAGE); + 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(); + /* 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); -} + lalr (); -/* functions to report errors which prevent a parser from being generated */ + /* 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 -fatal(s) -char *s; -{ - extern char *infile; - - if (infile == 0) - fprintf(stderr, "fatal error: %s\n", s); - else - fprintf(stderr, "\"%s\", line %d: %s\n", infile, lineno, s); - done(1); -} + /* Output file names. */ + compute_output_file_names (); + /* Output the detailed report on the grammar. */ + if (verbose_flag) + print_results (); -/* JF changed to accept/deal with variable args. - DO NOT change this to use varargs. It will appear to work - but will break on systems that don't have the necessary library - functions. This is the ONLY safe way to write such a function. */ -/*VARARGS1*/ - -void -fatals(fmt,x1,x2,x3,x4,x5,x6,x7,x8) -char *fmt; -{ - char buffer[200]; + /* Stop if there were errors, to avoid trashing previous output + files. */ + if (complain_message_count) + exit (1); - sprintf(buffer, fmt, x1,x2,x3,x4,x5,x6,x7,x8); - fatal(buffer); -} + /* Output the VCG graph. */ + if (graph_flag) + print_graph (); + /* Output the tables and the parser to ftable. In file output. */ + output (); -void -toomany(s) -char *s; -{ - char buffer[200]; + /* Free the symbol table data structure. */ + free_symtab (); - /* JF new msg */ - sprintf(buffer, "limit of %d exceeded, too many %s", MAXSHORT, s); - fatal(buffer); -} + reduce_free (); + free_conflicts (); + free_nullable (); + free_derives (); + /* 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(s) -char *s; -{ - fprintf(stderr, "internal error, %s\n", s); - abort(); + return complain_message_count ? EXIT_FAILURE : EXIT_SUCCESS; }