X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/07a58c1301a1131f7505e74f1d54bfdb31d193f5..e9f87b5b7df2e328d2e4196d276c0d96594c906b:/src/main.c

diff --git a/src/main.c b/src/main.c
index 248bcd89..55dca624 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,5 +1,5 @@
 /* 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.
@@ -31,26 +31,16 @@
 #include "reduce.h"
 #include "nullable.h"
 #include "print.h"
-
-#if 0				/* XXX currently unused.  */
-/* Nonzero means failure has been detected; don't write a parser file.  */
-static int failure;
-#endif
+#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 void berror PARAMS((const char *));
-
-extern char *printable_version PARAMS ((int));
-
-extern void generate_states PARAMS ((void));
-extern void initialize_conflicts PARAMS ((void));
-extern void finalize_conflicts PARAMS ((void));
-
-
-/* VMS complained about using `int'.  */
-
 int
 main (int argc, char *argv[])
 {
@@ -62,10 +52,7 @@ main (int argc, char *argv[])
   lineno = 0;
   getargs (argc, argv);
 
-  /* Be ready to clean up if we exit. */
-  atexit (done);
-
-  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
@@ -74,15 +61,15 @@ main (int argc, char *argv[])
   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 ();
 
@@ -93,43 +80,41 @@ main (int argc, char *argv[])
      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 ();
 
-  /* Print information about results, if requested.  */
-  print_results ();
+  /* Output the detailed report on the grammar.  */
+  if (verbose_flag)
+    print_results ();
+
+  /* Stop if there were errors, to avoid trashing previous output
+     files.  */
+  if (complain_message_count)
+    exit (1);
+
+  /* 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 ();
 
-  exit (complain_message_count ? 1 : 0);
-}
-
-/* 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.  */
+  /* 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;
 }