X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/cb7db13e45ec65cda920b9b5b2519bed663d5b38..640748eecf67130c80b5fd5f5cca19630eddf2b3:/src/main.c diff --git a/src/main.c b/src/main.c index 2cf2a936..a4a9871f 100644 --- a/src/main.c +++ b/src/main.c @@ -1,5 +1,6 @@ /* Top level entry point of bison, - Copyright (C) 1984, 1986, 1989, 1992, 1995, 2000 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. @@ -19,39 +20,42 @@ Boston, MA 02111-1307, USA. */ -#include #include "system.h" -#include "machine.h" /* for MAXSHORT */ +#include "bitset_stats.h" +#include "bitset.h" +#include "getargs.h" +#include "symtab.h" +#include "gram.h" #include "files.h" #include "complain.h" - -extern int verboseflag; - -/* Nonzero means failure has been detected; don't write a parser file. */ -int failure; +#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 +#include /* The name this program was run with, for messages. */ char *program_name; -char *printable_version PARAMS((int)); -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)); - - -/* VMS complained about using `int'. */ +static void +stage (const char *title) +{ + struct mallinfo minfo = mallinfo (); + struct tms tinfo; + times (&tinfo); + fprintf (stderr, "STAGE: %30s: %9d (%9d): %ldu %lds\n", + title, + minfo.uordblks, minfo.arena, + tinfo.tms_utime, tinfo.tms_stime); +} int main (int argc, char *argv[]) @@ -61,78 +65,100 @@ main (int argc, char *argv[]) bindtextdomain (PACKAGE, LOCALEDIR); textdomain (PACKAGE); - lineno = 0; - getargs(argc, argv); + getargs (argc, argv); - /* Be ready to clean up if we exit.*/ - atexit (done); + if (trace_flag) + bitset_stats_enable (); - openfiles(); + 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. */ + stage ("initialized muscles"); + + /* 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 (); + + stage ("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(); + stage ("reduced grammar"); - /* convert to nondeterministic finite state machine. In file LR0. + /* Record other info about the grammar. In files derives and + nullable. */ + set_derives (); + set_nullable (); + + /* Convert to nondeterministic finite state machine. In file LR0. See state.h for more info. */ - generate_states(); + generate_states (); + stage ("generated 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(); - - exit (complain_message_count ? 1 : 0); -} - -/* 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; -} - -/* Abort for an internal error denoted by string S. */ + lalr (); + + stage ("lalred"); + /* 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. */ + conflicts_solve (); + conflicts_print (); + + stage ("solved conflicts"); + /* Output file names. */ + compute_output_file_names (); + + /* Output the detailed report on the grammar. */ + if (report_flag) + print_results (); + + stage ("printed results"); + /* Stop if there were errors, to avoid trashing previous output + files. */ + if (complain_message_count) + exit (1); -void -berror (char *s) -{ - fprintf (stderr, _("%s: internal error: %s\n"), program_name, s); - abort(); + /* Output the VCG graph. */ + if (graph_flag) + print_graph (); + + /* Output the tables and the parser to ftable. In file output. */ + output (); + stage ("made output"); + + states_free (); + stage ("freed states"); + reduce_free (); + stage ("freed reduce"); + conflicts_free (); + stage ("freed conflicts"); + free_nullable (); + stage ("freed nullable"); + free_derives (); + stage ("freed derives"); + grammar_free (); + stage ("freed grammar"); + + /* The scanner memory cannot be released right after parsing, as it + contains things such as user actions, prologue, epilogue etc. */ + scanner_free (); + stage ("freed scanner"); + muscle_free (); + stage ("freed muscles"); + /* 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 + + if (trace_flag) + bitset_stats_dump (stderr); + + return complain_message_count ? EXIT_FAILURE : EXIT_SUCCESS; }