X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/337c5bd13149798e120508d4a250aae8bc78db1c..e9f87b5b7df2e328d2e4196d276c0d96594c906b:/src/main.c

diff --git a/src/main.c b/src/main.c
index df66d7c6..55dca624 100644
--- a/src/main.c
+++ b/src/main.c
@@ -41,8 +41,6 @@
 /* The name this program was run with, for messages.  */
 char *program_name;
 
-extern void berror PARAMS((const char *));
-
 int
 main (int argc, char *argv[])
 {
@@ -55,7 +53,6 @@ main (int argc, char *argv[])
   getargs (argc, argv);
 
   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
@@ -64,15 +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 ();
 
@@ -89,16 +86,18 @@ main (int argc, char *argv[])
   /* Output file names. */
   compute_output_file_names ();
 
+  /* 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 detailed report on the grammar.  */
-  print_results ();
-
   /* Output the VCG graph.  */
-  print_graph ();
+  if (graph_flag)
+    print_graph ();
 
   /* Output the tables and the parser to ftable.  In file output.  */
   output ();
@@ -106,26 +105,16 @@ main (int argc, char *argv[])
   /* Free the symbol table data structure.  */
   free_symtab ();
 
-  lex_free ();
-
-  /* Close the input files. */
-  close_files ();
-
   reduce_free ();
   free_conflicts ();
   free_nullable ();
   free_derives ();
 
-  output_files ();
+  /* 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
 
-  exit (complain_message_count ? 1 : 0);
-}
-
-/* Abort for an internal error denoted by string S.  */
-
-void
-berror (const char *s)
-{
-  fprintf (stderr, _("%s: internal error: %s\n"), program_name, s);
-  abort ();
+  return complain_message_count ? EXIT_FAILURE : EXIT_SUCCESS;
 }