/* Top level entry point of bison,
- Copyright 1984, 1986, 1989, 1992, 1995, 2000
+ Copyright 1984, 1986, 1989, 1992, 1995, 2000, 2001
Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
#include "LR0.h"
#include "conflicts.h"
#include "print_graph.h"
-#include "macrotab.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 berror PARAMS((const char *));
-
int
main (int argc, char *argv[])
{
lineno = 0;
getargs (argc, argv);
- macro_init ();
- open_files ();
+ 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
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. */
reduce_grammar ();
- /* record other info about the grammar. In files derives and 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 ();
lookahead is not enough to disambiguate the parsing. In file
conflicts. Also resolve s/r conflicts based on precedence
declarations. */
- initialize_conflicts ();
+ solve_conflicts ();
+ conflicts_print ();
+
+ /* Output file names. */
+ compute_output_file_names ();
+
+ /* Output the detailed report on the grammar. */
+ if (verbose_flag)
+ print_results ();
- /* Print information about results, if requested. */
- print_results ();
+ /* Stop if there were errors, to avoid trashing previous output
+ files. */
+ if (complain_message_count)
+ exit (1);
- /* Output the VCG graph. */
- print_graph ();
+ /* Output the VCG graph. */
+ if (graph_flag)
+ print_graph ();
/* Output the tables and the parser to ftable. In file output. */
output ();
- finalize_conflicts ();
+ /* Free the symbol table data structure. */
+ free_symtab ();
+
+ reduce_free ();
+ free_conflicts ();
free_nullable ();
free_derives ();
- if (!complain_message_count)
- output_files ();
-
- exit (complain_message_count ? 1 : 0);
-}
-\f
-/* 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 (const char *s)
-{
- fprintf (stderr, _("%s: internal error: %s\n"), program_name, s);
- abort ();
+ return complain_message_count ? EXIT_FAILURE : EXIT_SUCCESS;
}