/* Top level entry point of bison,
- Copyright (C) 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 "complain.h"
#include "derives.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"
+#include "symtab.h"
+#include "lex.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'. */
+extern void berror PARAMS((const char *));
int
main (int argc, char *argv[])
lineno = 0;
getargs (argc, argv);
- /* Be ready to clean up if we exit. */
- atexit (done);
-
- openfiles ();
+ muscle_init ();
+ open_files ();
/* 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.
+ In file reduce.c. */
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 ();
+
+ /* Stop if there were errors, to avoid trashing previous output
+ files. */
+ if (complain_message_count)
+ exit (1);
- /* Print information about results, if requested. In file print.
- */
- if (verboseflag)
- verbose ();
- else
- terse ();
+ /* Output the detailed report on the grammar. */
+ print_results ();
+
+ /* Output the VCG graph. */
+ print_graph ();
/* Output the tables and the parser to ftable. In file output. */
output ();
- finalize_conflicts ();
+ /* Close the input files. */
+ close_files ();
+
+ /* Free the symbol table data structure. */
+ free_symtab ();
+
+ lex_free ();
+
+ reduce_free ();
+ free_conflicts ();
free_nullable ();
free_derives ();
- 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_files ();
-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;
+ return complain_message_count ? EXIT_FAILURE : EXIT_SUCCESS;
}
-
+\f
/* Abort for an internal error denoted by string S. */
void