X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/21f1b063d812990caeb738fa8db21085ece53a30..09ccae9b18a7c09ebf7bb8df2a18c8c4a6def248:/src/conflicts.c

diff --git a/src/conflicts.c b/src/conflicts.c
index 9a02d4bb..05545b20 100644
--- a/src/conflicts.c
+++ b/src/conflicts.c
@@ -1,7 +1,7 @@
 /* Find and resolve or report lookahead conflicts for bison,
 
    Copyright (C) 1984, 1989, 1992, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-   2007 Free Software Foundation, Inc.
+   2007, 2008 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -135,78 +135,78 @@ log_resolution (rule *r, symbol_number token,
 	}
 
       obstack_sgrow (&solved_conflicts_obstack, ".\n");
+    }
 
-      /* XML report */
-      if (xml_flag)
-	{
-	  /* The description of the resolution. */
-	  switch (resolution)
-	    {
-	    case shift_resolution:
-	    case right_resolution:
-	      obstack_fgrow2 (&solved_conflicts_xml_obstack,
-			      "        <resolution rule=\"%d\" symbol=\"%s\""
-			      " type=\"shift\">",
-			      r->number,
-			      xml_escape (symbols[token]->tag));
-	      break;
-
-	    case reduce_resolution:
-	    case left_resolution:
-	      obstack_fgrow2 (&solved_conflicts_xml_obstack,
-			      "        <resolution rule=\"%d\" symbol=\"%s\""
-			      " type=\"reduce\">",
-			      r->number,
-			      xml_escape (symbols[token]->tag));
-	      break;
-
-	    case nonassoc_resolution:
-	      obstack_fgrow2 (&solved_conflicts_xml_obstack,
-			      "        <resolution rule=\"%d\" symbol=\"%s\""
-			      " type=\"error\">",
-			      r->number,
-			      xml_escape (symbols[token]->tag));
-	      break;
-	    }
-
-	  /* The reason. */
-	  switch (resolution)
-	    {
-	    case shift_resolution:
-	      obstack_fgrow2 (&solved_conflicts_xml_obstack,
-			      "%s &lt; %s",
-			      xml_escape_n (0, r->prec->tag),
-			      xml_escape_n (1, symbols[token]->tag));
-	      break;
-
-	    case reduce_resolution:
-	      obstack_fgrow2 (&solved_conflicts_xml_obstack,
-			      "%s &lt; %s",
-			      xml_escape_n (0, symbols[token]->tag),
-			      xml_escape_n (1, r->prec->tag));
-	      break;
-
-	    case left_resolution:
-	      obstack_fgrow1 (&solved_conflicts_xml_obstack,
-			      "%%left %s",
-			      xml_escape (symbols[token]->tag));
-	      break;
-
-	    case right_resolution:
-	      obstack_fgrow1 (&solved_conflicts_xml_obstack,
-			      "%%right %s",
-			      xml_escape (symbols[token]->tag));
-	      break;
-
-	    case nonassoc_resolution:
-	      obstack_fgrow1 (&solved_conflicts_xml_obstack,
-			      "%%nonassoc %s",
-			      xml_escape (symbols[token]->tag));
-	  break;
-	    }
+  /* XML report */
+  if (xml_flag)
+    {
+      /* The description of the resolution. */
+      switch (resolution)
+        {
+        case shift_resolution:
+        case right_resolution:
+          obstack_fgrow2 (&solved_conflicts_xml_obstack,
+                          "        <resolution rule=\"%d\" symbol=\"%s\""
+                          " type=\"shift\">",
+                          r->number,
+                          xml_escape (symbols[token]->tag));
+          break;
+
+        case reduce_resolution:
+        case left_resolution:
+          obstack_fgrow2 (&solved_conflicts_xml_obstack,
+                          "        <resolution rule=\"%d\" symbol=\"%s\""
+                          " type=\"reduce\">",
+                          r->number,
+                          xml_escape (symbols[token]->tag));
+          break;
+
+        case nonassoc_resolution:
+          obstack_fgrow2 (&solved_conflicts_xml_obstack,
+                          "        <resolution rule=\"%d\" symbol=\"%s\""
+                          " type=\"error\">",
+                          r->number,
+                          xml_escape (symbols[token]->tag));
+          break;
+        }
 
-	  obstack_sgrow (&solved_conflicts_xml_obstack, "</resolution>\n");
-	}
+      /* The reason. */
+      switch (resolution)
+        {
+        case shift_resolution:
+          obstack_fgrow2 (&solved_conflicts_xml_obstack,
+                          "%s &lt; %s",
+                          xml_escape_n (0, r->prec->tag),
+                          xml_escape_n (1, symbols[token]->tag));
+          break;
+
+        case reduce_resolution:
+          obstack_fgrow2 (&solved_conflicts_xml_obstack,
+                          "%s &lt; %s",
+                          xml_escape_n (0, symbols[token]->tag),
+                          xml_escape_n (1, r->prec->tag));
+          break;
+
+        case left_resolution:
+          obstack_fgrow1 (&solved_conflicts_xml_obstack,
+                          "%%left %s",
+                          xml_escape (symbols[token]->tag));
+          break;
+
+        case right_resolution:
+          obstack_fgrow1 (&solved_conflicts_xml_obstack,
+                          "%%right %s",
+                          xml_escape (symbols[token]->tag));
+          break;
+
+        case nonassoc_resolution:
+          obstack_fgrow1 (&solved_conflicts_xml_obstack,
+                          "%%nonassoc %s",
+                          xml_escape (symbols[token]->tag));
+      break;
+        }
+
+      obstack_sgrow (&solved_conflicts_xml_obstack, "</resolution>\n");
     }
 }
 
@@ -285,16 +285,21 @@ resolve_sr_conflict (state *s, int ruleno, symbol **errors, int *nerrs)
 	    flush_reduce (lookahead_tokens, i);
 	  }
 	else
-	  /* Matching precedence levels.
-	     For left association, keep only the reduction.
-	     For right association, keep only the shift.
-	     For nonassociation, keep neither.  */
+          /* Matching precedence levels.
+             For non-defined associativity, keep both: unexpected
+             associativity conflict.
+             For left associativity, keep only the reduction.
+             For right associativity, keep only the shift.
+             For nonassociativity, keep neither.  */
 
 	  switch (symbols[i]->assoc)
 	    {
-	    default:
+            case undef_assoc:
 	      abort ();
 
+            case precedence_assoc:
+              break;
+
 	    case right_assoc:
 	      log_resolution (redrule, i, right_resolution);
 	      flush_reduce (lookahead_tokens, i);