(AC_INIT): Bump version number to 1.875c.

[bison.git] / src / conflicts.c

diff --git a/src/conflicts.c b/src/conflicts.c
index 36f1d00c1a4ccfb7110b55bfeb26d950f49c674f..44546e1ca5788adfea7ad25c2e98c52b6d8cf631 100644 (file)
--- a/src/conflicts.c
+++ b/src/conflicts.c
@@ -1,6 +1,6 @@
 /* Find and resolve or report look-ahead conflicts for bison,
 
 /* Find and resolve or report look-ahead conflicts for bison,
 

-   Copyright (C) 1984, 1989, 1992, 2000, 2001, 2002
+   Copyright (C) 1984, 1989, 1992, 2000, 2001, 2002, 2003

    Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
    Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.


@@ -237,9 +237,12 @@ resolve_sr_conflict (state *s, int ruleno, symbol **errors)
            }
       }
 
            }
       }
 

-  /* Some tokens have been explicitly made errors.  Allocate a
-     permanent errs structure for this state, to record them.  */
-  state_errs_set (s, nerrs, errors);
+  if (nerrs)
+    {
+      /* Some tokens have been explicitly made errors.  Allocate a
+        permanent errs structure for this state, to record them.  */
+      state_errs_set (s, nerrs, errors);
+    }

 
   if (obstack_object_size (&solved_conflicts_obstack))
     {
 
   if (obstack_object_size (&solved_conflicts_obstack))
     {


@@ -277,10 +280,7 @@ set_conflicts (state *s, symbol **errors)
   for (i = 0; i < reds->num; ++i)
     if (reds->rules[i]->prec && reds->rules[i]->prec->prec
        && !bitset_disjoint_p (reds->lookaheads[i], lookaheadset))
   for (i = 0; i < reds->num; ++i)
     if (reds->rules[i]->prec && reds->rules[i]->prec->prec
        && !bitset_disjoint_p (reds->lookaheads[i], lookaheadset))

-      {
-       resolve_sr_conflict (s, i, errors);
-       break;
-      }
+      resolve_sr_conflict (s, i, errors);

 
   /* Loop over all rules which require lookahead in this state.  Check
      for conflicts not resolved above.  */
 
   /* Loop over all rules which require lookahead in this state.  Check
      for conflicts not resolved above.  */


@@ -365,7 +365,7 @@ count_sr_conflicts (state *s)
 +`----------------------------------------------------------------*/
 
 static int
 +`----------------------------------------------------------------*/
 
 static int

-count_rr_conflicts (state *s, int one_per_token)
+count_rr_conflicts (state *s, bool one_per_token)

 {
   int i;
   reductions *reds = s->reductions;
 {
   int i;
   reductions *reds = s->reductions;


@@ -387,60 +387,20 @@ count_rr_conflicts (state *s, int one_per_token)
 }
 
 
 }
 
 

-/*--------------------------------------------------------------.
-| Return a human readable string which reports shift/reduce and |
-| reduce/reduce conflict numbers (SRC_NUM, RRC_NUM).            |
-`--------------------------------------------------------------*/
-
-static const char *
-conflict_report (int src_num, int rrc_num)
-{
-  static char res[4096];
-  char *cp = res;
-
-  if (src_num >= 1)
-    {
-      sprintf (cp, ngettext ("%d shift/reduce conflict",
-                            "%d shift/reduce conflicts", src_num), src_num);
-      cp += strlen (cp);
-    }
-
-  if (src_num > 0 && rrc_num > 0)
-    {
-      sprintf (cp, " %s ", _("and"));
-      cp += strlen (cp);
-    }
-
-  if (rrc_num >= 1)
-    {
-      sprintf (cp, ngettext ("%d reduce/reduce conflict",
-                            "%d reduce/reduce conflicts", rrc_num), rrc_num);
-      cp += strlen (cp);
-    }
-
-  *cp++ = '\0';
-
-  return res;
-}
-
-
-/*----------------------------------------------------------------.
-| Same as above, but report the number of conflicts a` la POSIX.  |
-`----------------------------------------------------------------*/
+/*--------------------------------------------------------.
+| Report the number of conflicts, using the Yacc format.  |
+`--------------------------------------------------------*/

 
 static void
 
 static void

-conflict_report_yacc (int src_num, int rrc_num)
+conflict_report (FILE *out, int src_num, int rrc_num)

 {
 {

-  /* If invoked with `--yacc', use the output format specified by
-     POSIX.  */
-  fprintf (stderr, _("conflicts: "));
-  if (src_num > 0)
-    fprintf (stderr, _(" %d shift/reduce"), src_num);
-  if (src_num > 0 && rrc_num > 0)
-    fprintf (stderr, ",");
-  if (rrc_num > 0)
-    fprintf (stderr, _(" %d reduce/reduce"), rrc_num);
-  putc ('\n', stderr);
+  if (src_num && rrc_num)
+    fprintf (out, _("conflicts: %d shift/reduce, %d reduce/reduce\n"),
+            src_num, rrc_num);
+  else if (src_num)
+    fprintf (out, _("conflicts: %d shift/reduce\n"), src_num);
+  else if (rrc_num)
+    fprintf (out, _("conflicts: %d reduce/reduce\n"), rrc_num);

 }
 
 
 }
 
 


@@ -458,10 +418,9 @@ conflicts_output (FILE *out)
       state *s = states[i];
       if (conflicts[i])
        {
       state *s = states[i];
       if (conflicts[i])
        {

-         fprintf (out, _("State %d contains "), i);
-         fprintf (out, "%s.\n",
-                  conflict_report (count_sr_conflicts (s),
-                                   count_rr_conflicts (s, true)));
+         fprintf (out, _("State %d "), i);
+         conflict_report (out, count_sr_conflicts (s),
+                          count_rr_conflicts (s, true));

          printed_sth = true;
        }
     }
          printed_sth = true;
        }
     }


@@ -504,7 +463,7 @@ conflicts_print (void)
   /* Is the number of SR conflicts OK?  Either EXPECTED_CONFLICTS is
      not set, and then we want 0 SR, or else it is specified, in which
      case we want equality.  */
   /* Is the number of SR conflicts OK?  Either EXPECTED_CONFLICTS is
      not set, and then we want 0 SR, or else it is specified, in which
      case we want equality.  */

-  int src_ok = 0;
+  bool src_ok = false;

 
   int src_total = 0;
   int rrc_total = 0;
 
   int src_total = 0;
   int rrc_total = 0;


@@ -529,23 +488,27 @@ conflicts_print (void)
     return;
 
   /* Report the total number of conflicts on STDERR.  */
     return;
 
   /* Report the total number of conflicts on STDERR.  */

-  if (yacc_flag)
-    conflict_report_yacc (src_total, rrc_total);
-  else
-    warn ("%s", conflict_report (src_total, rrc_total));
+  if (! yacc_flag)
+    fprintf (stderr, "%s: ", current_file);
+  conflict_report (stderr, src_total, rrc_total);

 
 

-  if (expected_conflicts != -1 && !src_ok)
-    complain (ngettext ("expected %d shift/reduce conflict",
+  if (expected_conflicts != -1)
+    {
+      if (! src_ok)
+       warn (ngettext ("expected %d shift/reduce conflict",

                        "expected %d shift/reduce conflicts",
                        expected_conflicts),
              expected_conflicts);
                        "expected %d shift/reduce conflicts",
                        expected_conflicts),
              expected_conflicts);

+      if (rrc_total)
+       warn (_("expected 0 reduce/reduce conflicts"));
+    }

 }
 
 
 void
 conflicts_free (void)
 {
 }
 
 
 void
 conflicts_free (void)
 {

-  free (conflicts);
+  XFREE (conflicts);

   bitset_free (shiftset);
   bitset_free (lookaheadset);
   obstack_free (&solved_conflicts_obstack, NULL);
   bitset_free (shiftset);
   bitset_free (lookaheadset);
   obstack_free (&solved_conflicts_obstack, NULL);