-/* Top level entry point of bison,
- Copyright (C) 1984, 1986, 1989, 1992, 1995, 2000 Free Software Foundation, Inc.
+/* Top level entry point of Bison.
+
+ Copyright (C) 1984, 1986, 1989, 1992, 1995, 2000, 2001, 2002, 2004,
+ 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
- Bison is free software; you can redistribute it and/or modify
+ This program 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.
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
- Bison is distributed in the hope that it will be useful,
+ This program 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, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
-#include <stdio.h>
+#include <config.h>
#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;
-
-/* 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'. */
+
+#include <bitset_stats.h>
+#include <bitset.h>
+#include <configmake.h>
+#include <quotearg.h>
+#include <timevar.h>
+
+#include "LR0.h"
+#include "complain.h"
+#include "conflicts.h"
+#include "derives.h"
+#include "files.h"
+#include "getargs.h"
+#include "gram.h"
+#include "lalr.h"
+#include "ielr.h"
+#include "muscle-tab.h"
+#include "nullable.h"
+#include "output.h"
+#include "print.h"
+#include "print_graph.h"
+#include "print-xml.h"
+#include "reader.h"
+#include "reduce.h"
+#include "scan-code.h"
+#include "scan-gram.h"
+#include "scan-skel.h"
+#include "symtab.h"
+#include "tables.h"
+#include "uniqstr.h"
+
+
int
main (int argc, char *argv[])
{
program_name = argv[0];
setlocale (LC_ALL, "");
- bindtextdomain (PACKAGE, LOCALEDIR);
- textdomain (PACKAGE);
-
- failure = 0;
- lineno = 0;
- getargs(argc, argv);
- openfiles();
-
- /* 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);
-
- /* find useless nonterminals and productions and reduce the grammar. In
- file reduce.c */
- reduce_grammar();
-
- /* 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();
-
- /* 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;
-}
-\f
-/* 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;
-}
-
-/* Display filename and lino if available. */
-
-static void
-banner (void)
-{
- if (infile == 0)
- fprintf(stderr, "%s: ", program_name);
- else
- fprintf(stderr, "%s:%d: ", infile, lineno);
-}
-
-static void
-fatal_banner (void)
-{
- banner ();
- fputs (_("fatal error: "), stderr);
-}
-
-/* Print the message S for a fatal error. */
-
-void
-fatal (char *s)
-{
- fatal_banner ();
- fputs (s, stderr);
- fputc ('\n', stderr);
- done (1);
-}
+ (void) bindtextdomain (PACKAGE, LOCALEDIR);
+ (void) bindtextdomain ("bison-runtime", LOCALEDIR);
+ (void) textdomain (PACKAGE);
+ uniqstrs_new ();
+ muscle_init ();
-/* Print a message for a fatal error. Use FMT to construct the message
- and incorporate string X1. */
+ getargs (argc, argv);
-void
-fatals (char *fmt, char *x1)
-{
- fatal_banner ();
- fprintf (stderr, fmt, x1);
- fputc ('\n', stderr);
- done (1);
-}
+ timevar_report = trace_flag & trace_time;
+ init_timevar ();
+ timevar_start (TV_TOTAL);
-static void
-warn_banner (void)
-{
- banner ();
- failure = 1;
-}
-
-/* Print a warning message S. */
+ if (trace_flag & trace_bitsets)
+ bitset_stats_enable ();
-void
-warn (char *s)
-{
- warn_banner ();
- fputs (s, stderr);
- fputc ('\n', stderr);
-}
+ /* 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. */
-/* Print a warning message containing the string for the integer X1.
- The message is given by the format FMT. */
+ timevar_push (TV_READER);
+ reader ();
+ timevar_pop (TV_READER);
-void
-warni (char *fmt, int x1)
-{
- warn_banner ();
- fprintf (stderr, fmt, x1);
- fputc ('\n', stderr);
-}
+ if (complaint_issued)
+ goto finish;
-/* Print a warning message containing the string X1.
- The message is given by the format FMT. */
+ /* Find useless nonterminals and productions and reduce the grammar. */
+ timevar_push (TV_REDUCE);
+ reduce_grammar ();
+ timevar_pop (TV_REDUCE);
-void
-warns (char *fmt, char *x1)
-{
- warn_banner ();
- fprintf (stderr, fmt, x1);
- fputc ('\n', stderr);
-}
+ /* Record other info about the grammar. In files derives and
+ nullable. */
+ timevar_push (TV_SETS);
+ derives_compute ();
+ nullable_compute ();
+ timevar_pop (TV_SETS);
-/* Print a warning message containing the two strings X1 and X2.
- The message is given by the format FMT. */
+ /* Convert to nondeterministic finite state machine. In file LR0.
+ See state.h for more info. */
+ timevar_push (TV_LR0);
+ generate_states ();
+ timevar_pop (TV_LR0);
+
+ /* Make it deterministic by computing lookahead sets. Except when LALR(1) is
+ requested, split states to eliminate LR(1)-relative inadequacies. In file
+ lalr and ielr. */
+ ielr ();
+
+ /* 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. */
+ timevar_push (TV_CONFLICTS);
+ conflicts_solve ();
+ if (!muscle_percent_define_flag_if ("lr.keep-unreachable-states"))
+ {
+ state_number *old_to_new = xnmalloc (nstates, sizeof *old_to_new);
+ state_number nstates_old = nstates;
+ state_remove_unreachable_states (old_to_new);
+ lalr_update_state_numbers (old_to_new, nstates_old);
+ conflicts_update_state_numbers (old_to_new, nstates_old);
+ free (old_to_new);
+ }
+ conflicts_print ();
+ timevar_pop (TV_CONFLICTS);
-void
-warnss (char *fmt, char *x1, char *x2)
-{
- warn_banner ();
- fprintf (stderr, fmt, x1, x2);
- fputc ('\n', stderr);
-}
+ /* Compute the parser tables. */
+ timevar_push (TV_ACTIONS);
+ tables_generate ();
+ timevar_pop (TV_ACTIONS);
-/* Print a warning message containing the 3 strings X1, X2, X3.
- The message is given by the format FMT. */
+ grammar_rules_useless_report
+ (_("rule useless in parser due to conflicts"));
-void
-warnsss (char *fmt, char *x1, char *x2, char *x3)
-{
- warn_banner ();
- fprintf (stderr, fmt, x1, x2, x3);
- fputc ('\n', stderr);
-}
+ /* Output file names. */
+ compute_output_file_names ();
-/* Print a message for the fatal occurence of more than MAXSHORT
- instances of whatever is denoted by the string S. */
+ /* Output the detailed report on the grammar. */
+ if (report_flag)
+ {
+ timevar_push (TV_REPORT);
+ print_results ();
+ timevar_pop (TV_REPORT);
+ }
-void
-toomany (char *s)
-{
- fatal_banner ();
- fprintf (stderr, _("too many %s (max %d)"), s, MAXSHORT);
- fputc ('\n', stderr);
- done (1);
-}
+ /* Output the graph. */
+ if (graph_flag)
+ {
+ timevar_push (TV_GRAPH);
+ print_graph ();
+ timevar_pop (TV_GRAPH);
+ }
-/* Abort for an internal error denoted by string S. */
+ /* Output xml. */
+ if (xml_flag)
+ {
+ timevar_push (TV_XML);
+ print_xml ();
+ timevar_pop (TV_XML);
+ }
-void
-berror (char *s)
-{
- fprintf(stderr, _("%s: internal error: %s\n"), program_name, s);
- abort();
+ /* Stop if there were errors, to avoid trashing previous output
+ files. */
+ if (complaint_issued)
+ goto finish;
+
+ /* Lookahead tokens are no longer needed. */
+ timevar_push (TV_FREE);
+ lalr_free ();
+ timevar_pop (TV_FREE);
+
+ /* Output the tables and the parser to ftable. In file output. */
+ timevar_push (TV_PARSER);
+ output ();
+ timevar_pop (TV_PARSER);
+
+ timevar_push (TV_FREE);
+ nullable_free ();
+ derives_free ();
+ tables_free ();
+ states_free ();
+ reduce_free ();
+ conflicts_free ();
+ grammar_free ();
+ output_file_names_free ();
+
+ /* The scanner memory cannot be released right after parsing, as it
+ contains things such as user actions, prologue, epilogue etc. */
+ gram_scanner_free ();
+ muscle_free ();
+ uniqstrs_free ();
+ code_scanner_free ();
+ skel_scanner_free ();
+ quotearg_free ();
+ timevar_pop (TV_FREE);
+
+ if (trace_flag & trace_bitsets)
+ bitset_stats_dump (stderr);
+
+ finish:
+
+ /* Stop timing and print the times. */
+ timevar_stop (TV_TOTAL);
+ timevar_print (stderr);
+
+ return complaint_issued ? EXIT_FAILURE : EXIT_SUCCESS;
}
projects / bison.git / blobdiff