Instead of attaching lookaheads and duplicating the rules being

[bison.git] / src / print_graph.c

diff --git a/src/print_graph.c b/src/print_graph.c
index 272ffc53ff007df4f0164830c1198c3b4969610c..fe0ee76d9d52b3faa98b54dad40e0c7c223d8ff0 100644 (file)
--- a/src/print_graph.c
+++ b/src/print_graph.c
@@ -86,28 +86,23 @@ print_core (struct obstack *oout, state_t *state)
        obstack_fgrow1 (oout, " %s", symbols[*sp]->tag);
 
       /* Experimental feature: display the lookaheads. */
-      if ((report_flag & report_lookaheads)
-         && state->nlookaheads)
+      if (report_flag & report_lookaheads)
        {
-         int j, k;
-         bitset_iterator biter;
-         int nlookaheads = 0;
+         /* Find the reduction we are handling.  */
+         reductions_t *reds = state->reductions;
+         int redno = state_reduction_find (state, &rules[rule]);
 
-         /* Look for lookaheads corresponding to this rule. */
-         for (j = 0; j < state->nlookaheads; ++j)
-           BITSET_FOR_EACH (biter, state->lookaheads[j], k, 0)
-             if (state->lookaheads_rule[j]->number == rule)
-               nlookaheads++;
-
-         if (nlookaheads)
+         /* Print them if there are.  */
+         if (reds->lookaheads && redno != -1)
            {
-             obstack_sgrow (oout, "  [");
-             for (j = 0; j < state->nlookaheads; ++j)
-               BITSET_FOR_EACH (biter, state->lookaheads[j], k, 0)
-                 if (state->lookaheads_rule[j]->number == rule)
-                   obstack_fgrow2 (oout, "%s%s",
-                                   symbols[k]->tag,
-                                   --nlookaheads ? ", " : "");
+             bitset_iterator biter;
+             int k;
+             int not_first = 0;
+             obstack_sgrow (oout, "[");
+             BITSET_FOR_EACH (biter, reds->lookaheads[redno], k, 0)
+               obstack_fgrow2 (oout, "%s%s",
+                               not_first++ ? ", " : "",
+                               symbols[k]->tag);
              obstack_sgrow (oout, "]");
            }
        }