/* Top level entry point of bison,
- Copyright (C) 1984, 1986, 1989, 1992, 1995, 2000
+ Copyright (C) 1984, 1986, 1989, 1992, 1995, 2000, 2001, 2002
Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
#include "system.h"
+#include "bitset_stats.h"
+#include "bitset.h"
#include "getargs.h"
+#include "symtab.h"
+#include "gram.h"
#include "files.h"
#include "complain.h"
#include "derives.h"
+#include "tables.h"
#include "output.h"
-
-#if 0 /* XXX currently unused. */
-/* Nonzero means failure has been detected; don't write a parser file. */
-static int failure;
-#endif
+#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"
/* The name this program was run with, for messages. */
char *program_name;
-extern char *printable_version PARAMS ((int));
-
-extern void openfiles PARAMS ((void));
-extern void reader PARAMS ((void));
-extern void reduce_grammar PARAMS ((void));
-extern void set_nullable PARAMS ((void));
-extern void free_nullable PARAMS ((void));
-extern void generate_states PARAMS ((void));
-extern void lalr PARAMS ((void));
-extern void initialize_conflicts PARAMS ((void));
-extern void finalize_conflicts PARAMS ((void));
-extern void verbose PARAMS ((void));
-extern void terse PARAMS ((void));
-/* VMS complained about using `int'. */
-
int
main (int argc, char *argv[])
{
program_name = argv[0];
setlocale (LC_ALL, "");
- bindtextdomain (PACKAGE, LOCALEDIR);
- textdomain (PACKAGE);
+ (void) bindtextdomain (PACKAGE, LOCALEDIR);
+ (void) textdomain (PACKAGE);
- lineno = 0;
getargs (argc, argv);
- /* Be ready to clean up if we exit. */
- atexit (done);
+ time_report = trace_flag & trace_time;
+ init_timevar ();
+ timevar_start (TV_TOTAL);
+
+ if (trace_flag & trace_bitsets)
+ 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. */
+
+ timevar_push (TV_READER);
reader ();
+ timevar_pop (TV_READER);
+
if (complain_message_count)
exit (1);
- /* find useless nonterminals and productions and reduce the grammar. In
- file reduce.c */
+ /* Find useless nonterminals and productions and reduce the grammar. */
+ timevar_push (TV_REDUCE);
reduce_grammar ();
+ timevar_pop (TV_REDUCE);
- /* 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. */
+ timevar_push (TV_SETS);
+ derives_compute ();
+ nullable_compute ();
+ timevar_pop (TV_SETS);
- /* convert to nondeterministic finite state machine. In file LR0.
+ /* 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. In file lalr. */
+ timevar_push (TV_LALR);
lalr ();
+ timevar_pop (TV_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 ();
+ timevar_push (TV_CONFLICTS);
+ conflicts_solve ();
+ conflicts_print ();
+ timevar_pop (TV_CONFLICTS);
- /* Print information about results, if requested. In file print.
- */
- if (verboseflag)
- verbose ();
- else
- terse ();
+ /* Compute the parser tables. */
+ timevar_push (TV_ACTIONS);
+ tables_generate ();
+ timevar_pop (TV_ACTIONS);
- /* Output the tables and the parser to ftable. In file output. */
- output ();
+ grammar_rules_never_reduced_report
+ (_("rule never reduced because of conflicts"));
- finalize_conflicts ();
- free_nullable ();
- free_derives ();
+ /* Output file names. */
+ compute_output_file_names ();
- exit (complain_message_count ? 1 : 0);
-}
-\f
-/* Return a string containing a printable version of C:
- either C itself, or the corresponding \DDD code. */
+ /* Output the detailed report on the grammar. */
+ if (report_flag)
+ {
+ timevar_push (TV_REPORT);
+ print_results ();
+ timevar_pop (TV_REPORT);
+ }
-char *
-printable_version (int c)
-{
- static char buf[10];
- if (c < ' ' || c >= '\177')
- sprintf (buf, "\\%o", c);
- else
+ /* Output the VCG graph. */
+ if (graph_flag)
{
- buf[0] = c;
- buf[1] = '\0';
+ timevar_push (TV_GRAPH);
+ print_graph ();
+ timevar_pop (TV_GRAPH);
}
- return buf;
-}
-/* Abort for an internal error denoted by string S. */
+ /* Stop if there were errors, to avoid trashing previous output
+ files. */
+ if (complain_message_count)
+ exit (1);
+
+ /* Lookaheads are no longer needed. */
+ timevar_push (TV_FREE);
+ lalr_free ();
+ timevar_pop (TV_FREE);
-void
-berror (const char *s)
-{
- fprintf (stderr, _("%s: internal error: %s\n"), program_name, s);
- abort ();
+ /* 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 ();
+
+ /* The scanner memory cannot be released right after parsing, as it
+ contains things such as user actions, prologue, epilogue etc. */
+ scanner_free ();
+ muscle_free ();
+ /* 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
+ timevar_pop (TV_FREE);
+
+ if (trace_flag & trace_bitsets)
+ bitset_stats_dump (stderr);
+
+ /* Stop timing and print the times. */
+ timevar_stop (TV_TOTAL);
+ timevar_print (stderr);
+
+ return complain_message_count ? EXIT_FAILURE : EXIT_SUCCESS;
}
projects / bison.git / blobdiff