X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/c6f1a33c06db52ed122d0922885602cf37f99941..e62f1a899168bdf1658dd6d934dea407491a80ff:/src/main.c

diff --git a/src/main.c b/src/main.c
index 6b73f9eb..59402c3e 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,5 +1,6 @@
-/* Top level entry point of bison,
-   Copyright 1984, 1986, 1989, 1992, 1995, 2000, 2001, 2002
+/* Top level entry point of Bison.
+
+   Copyright (C) 1984, 1986, 1989, 1992, 1995, 2000, 2001, 2002, 2004
    Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
@@ -21,25 +22,29 @@
 
 
 #include "system.h"
-#include "bitset_stats.h"
-#include "bitset.h"
-#include "getargs.h"
-#include "symtab.h"
-#include "gram.h"
-#include "files.h"
+
+#include <bitset_stats.h>
+#include <bitset.h>
+#include <timevar.h>
+
+#include "LR0.h"
 #include "complain.h"
+#include "conflicts.h"
 #include "derives.h"
-#include "tables.h"
-#include "output.h"
-#include "reader.h"
+#include "files.h"
+#include "getargs.h"
+#include "gram.h"
 #include "lalr.h"
-#include "reduce.h"
+#include "muscle_tab.h"
 #include "nullable.h"
+#include "output.h"
 #include "print.h"
-#include "LR0.h"
-#include "conflicts.h"
 #include "print_graph.h"
-#include "muscle_tab.h"
+#include "reader.h"
+#include "reduce.h"
+#include "symtab.h"
+#include "tables.h"
+#include "uniqstr.h"
 
 /* The name this program was run with, for messages.  */
 char *program_name;
@@ -51,12 +56,14 @@ main (int argc, char *argv[])
 {
   program_name = argv[0];
   setlocale (LC_ALL, "");
-  bindtextdomain (PACKAGE, LOCALEDIR);
-  textdomain (PACKAGE);
+  (void) bindtextdomain (PACKAGE, LOCALEDIR);
+  (void) textdomain (PACKAGE);
+
+  uniqstrs_new ();
 
   getargs (argc, argv);
 
-  time_report = trace_flag & trace_time;
+  timevar_report = trace_flag & trace_time;
   init_timevar ();
   timevar_start (TV_TOTAL);
 
@@ -73,8 +80,8 @@ main (int argc, char *argv[])
   reader ();
   timevar_pop (TV_READER);
 
-  if (complain_message_count)
-    exit (1);
+  if (complaint_issued)
+    goto finish;
 
   /* Find useless nonterminals and productions and reduce the grammar. */
   timevar_push (TV_REDUCE);
@@ -84,8 +91,8 @@ main (int argc, char *argv[])
   /* Record other info about the grammar.  In files derives and
      nullable.  */
   timevar_push (TV_SETS);
-  set_derives ();
-  set_nullable ();
+  derives_compute ();
+  nullable_compute ();
   timevar_pop (TV_SETS);
 
   /* Convert to nondeterministic finite state machine.  In file LR0.
@@ -100,7 +107,7 @@ main (int argc, char *argv[])
   timevar_pop (TV_LALR);
 
   /* Find and record any conflicts: places where one token of
-     lookahead is not enough to disambiguate the parsing.  In file
+     look-ahead is not enough to disambiguate the parsing.  In file
      conflicts.  Also resolve s/r conflicts based on precedence
      declarations.  */
   timevar_push (TV_CONFLICTS);
@@ -108,6 +115,14 @@ main (int argc, char *argv[])
   conflicts_print ();
   timevar_pop (TV_CONFLICTS);
 
+  /* Compute the parser tables.  */
+  timevar_push (TV_ACTIONS);
+  tables_generate ();
+  timevar_pop (TV_ACTIONS);
+
+  grammar_rules_never_reduced_report
+    (_("rule never reduced because of conflicts"));
+
   /* Output file names. */
   compute_output_file_names ();
 
@@ -119,11 +134,6 @@ main (int argc, char *argv[])
       timevar_pop (TV_REPORT);
     }
 
-  /* Stop if there were errors, to avoid trashing previous output
-     files.  */
-  if (complain_message_count)
-    exit (1);
-
   /* Output the VCG graph.  */
   if (graph_flag)
     {
@@ -132,10 +142,15 @@ main (int argc, char *argv[])
       timevar_pop (TV_GRAPH);
     }
 
-  /* Compute the parser tables.  */
-  timevar_push (TV_ACTIONS);
-  tables_generate ();
-  timevar_pop (TV_ACTIONS);
+  /* Stop if there were errors, to avoid trashing previous output
+     files.  */
+  if (complaint_issued)
+    goto finish;
+
+  /* Look-ahead tokens are no longer needed. */
+  timevar_push (TV_FREE);
+  lalr_free ();
+  timevar_pop (TV_FREE);
 
   /* Output the tables and the parser to ftable.  In file output.  */
   timevar_push (TV_PARSER);
@@ -143,31 +158,37 @@ main (int argc, char *argv[])
   timevar_pop (TV_PARSER);
 
   timevar_push (TV_FREE);
+  nullable_free ();
+  derives_free ();
   tables_free ();
   states_free ();
   reduce_free ();
   conflicts_free ();
-  free_nullable ();
-  free_derives ();
   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 ();
+  uniqstrs_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);
+  {
+    extern void *alloca (size_t);
+    alloca (0);
+  }
 #endif
   timevar_pop (TV_FREE);
 
   if (trace_flag & trace_bitsets)
     bitset_stats_dump (stderr);
 
+ finish:
+
   /* Stop timing and print the times.  */
   timevar_stop (TV_TOTAL);
   timevar_print (stderr);
 
-  return complain_message_count ? EXIT_FAILURE : EXIT_SUCCESS;
+  return complaint_issued ? EXIT_FAILURE : EXIT_SUCCESS;
 }