X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/f004bf6ac4bdfe0b7dcd554eac8c8899512f9475..125ecb5684787648d54a799be962cc5c48098279:/src/conflicts.c

diff --git a/src/conflicts.c b/src/conflicts.c
index 77520ade..02b843b3 100644
--- a/src/conflicts.c
+++ b/src/conflicts.c
@@ -90,14 +90,14 @@ resolve_sr_conflict (int state, int lookaheadnum)
   unsigned *fp1;
   unsigned *fp2;
   int redprec;
-  errs *errp = (errs *) xcalloc (sizeof (errs) + ntokens * sizeof (short), 1);
+  errs *errp = ERRS_ALLOC (ntokens + 1);
   short *errtokens = errp->errs;
 
   /* find the rule to reduce by to get precedence of reduction  */
-  redprec = rprec[LAruleno[lookaheadnum]];
+  redprec = rule_table[LAruleno[lookaheadnum]].prec;
 
   mask = 1;
-  fp1 = LA + lookaheadnum * tokensetsize;
+  fp1 = LA (lookaheadnum);
   fp2 = lookaheadset;
   for (i = 0; i < ntokens; i++)
     {
@@ -170,7 +170,7 @@ resolve_sr_conflict (int state, int lookaheadnum)
       /* Some tokens have been explicitly made errors.  Allocate
          a permanent errs structure for this state, to record them.  */
       i = (char *) errtokens - (char *) errp;
-      err_table[state] = (errs *) xcalloc ((unsigned int) i, 1);
+      err_table[state] = ERRS_ALLOC (i + 1);
       bcopy (errp, err_table[state], i);
     }
   else
@@ -182,13 +182,8 @@ resolve_sr_conflict (int state, int lookaheadnum)
 static void
 set_conflicts (int state)
 {
-  int i;
-  int k;
+  int i, j;
   shifts *shiftp;
-  unsigned *fp2;
-  unsigned *fp3;
-  unsigned *fp4;
-  unsigned *fp1;
   int symbol;
 
   if (state_table[state].consistent)
@@ -199,58 +194,41 @@ set_conflicts (int state)
 
   shiftp = state_table[state].shift_table;
   if (shiftp)
-    {
-      k = shiftp->nshifts;
-      for (i = 0; i < k; i++)
-	{
-	  symbol = state_table[shiftp->shifts[i]].accessing_symbol;
-	  if (ISVAR (symbol))
-	    break;
-	  SETBIT (lookaheadset, symbol);
-	}
-    }
-
-  k = state_table[state + 1].lookaheads;
-  fp4 = lookaheadset + tokensetsize;
+    for (i = 0; i < shiftp->nshifts; i++)
+      {
+	symbol = state_table[shiftp->shifts[i]].accessing_symbol;
+	if (ISVAR (symbol))
+	  break;
+	SETBIT (lookaheadset, symbol);
+      }
 
   /* Loop over all rules which require lookahead in this state.  First
      check for shift-reduce conflict, and try to resolve using
      precedence */
-  for (i = state_table[state].lookaheads; i < k; i++)
-    if (rprec[LAruleno[i]])
-      {
-	fp1 = LA + i * tokensetsize;
-	fp2 = fp1;
-	fp3 = lookaheadset;
-
-	while (fp3 < fp4)
+  for (i = state_table[state].lookaheads;
+       i < state_table[state + 1].lookaheads;
+       ++i)
+    if (rule_table[LAruleno[i]].prec)
+      for (j = 0; j < tokensetsize; ++j)
+	if (LA (i)[j] & lookaheadset[j])
 	  {
-	    if (*fp2++ & *fp3++)
-	      {
-		resolve_sr_conflict (state, i);
-		break;
-	      }
+	    resolve_sr_conflict (state, i);
+	    break;
 	  }
-      }
 
 
   /* Loop over all rules which require lookahead in this state.  Check
      for conflicts not resolved above.  */
-  for (i = state_table[state].lookaheads; i < k; i++)
+  for (i = state_table[state].lookaheads;
+       i < state_table[state + 1].lookaheads;
+       ++i)
     {
-      fp1 = LA + i * tokensetsize;
-      fp2 = fp1;
-      fp3 = lookaheadset;
-
-      while (fp3 < fp4)
-	if (*fp2++ & *fp3++)
+      for (j = 0; j < tokensetsize; ++j)
+	if (LA (i)[j] & lookaheadset[j])
 	  conflicts[state] = 1;
 
-      fp2 = fp1;
-      fp3 = lookaheadset;
-
-      while (fp3 < fp4)
-	*fp3++ |= *fp2++;
+      for (j = 0; j < tokensetsize; ++j)
+	lookaheadset[j] |= LA (i)[j];
     }
 }
 
@@ -314,7 +292,7 @@ count_sr_conflicts (int state)
 
   for (i = state_table[state].lookaheads; i < k; i++)
     {
-      fp1 = LA + i * tokensetsize;
+      fp1 = LA (i);
       fp2 = lookaheadset;
 
       while (fp2 < fp3)
@@ -366,7 +344,7 @@ count_rr_conflicts (int state)
     return 0;
 
   mask = 1;
-  baseword = LA + m * tokensetsize;
+  baseword = LA (m);
   for (i = 0; i < ntokens; i++)
     {
       unsigned *wordp = baseword;
@@ -572,7 +550,7 @@ print_reductions (FILE *out, int state)
     {
       default_rule = LAruleno[m];
 
-      fp1 = LA + m * tokensetsize;
+      fp1 = LA (m);
       fp2 = shiftset;
       fp3 = lookaheadset;
       fp4 = lookaheadset + tokensetsize;
@@ -587,7 +565,8 @@ print_reductions (FILE *out, int state)
 	{
 	  if (mask & *fp3)
 	    fprintf (out, _("    %-4s\t[reduce using rule %d (%s)]\n"),
-		     tags[i], default_rule, tags[rlhs[default_rule]]);
+		     tags[i], default_rule,
+		     tags[rule_table[default_rule].lhs]);
 
 	  mask <<= 1;
 	  if (mask == 0)
@@ -598,7 +577,7 @@ print_reductions (FILE *out, int state)
 	}
 
       fprintf (out, _("    $default\treduce using rule %d (%s)\n\n"),
-	       default_rule, tags[rlhs[default_rule]]);
+	       default_rule, tags[rule_table[default_rule].lhs]);
     }
   else if (n - m >= 1)
     {
@@ -609,7 +588,7 @@ print_reductions (FILE *out, int state)
       if (!nodefault)
 	for (i = m; i < n; i++)
 	  {
-	    fp1 = LA + i * tokensetsize;
+	    fp1 = LA (i);
 	    fp2 = shiftset;
 	    fp3 = lookaheadset;
 
@@ -664,7 +643,7 @@ print_reductions (FILE *out, int state)
 	}
 
       mask = 1;
-      fp1 = LA + m * tokensetsize;
+      fp1 = LA (m);
       fp2 = shiftset;
       for (i = 0; i < ntokens; i++)
 	{
@@ -687,7 +666,7 @@ print_reductions (FILE *out, int state)
 			  rule = LAruleno[j];
 			  fprintf (out,
 				   _("    %-4s\treduce using rule %d (%s)\n"),
-				   tags[i], rule, tags[rlhs[rule]]);
+				   tags[i], rule, tags[rule_table[rule].lhs]);
 			}
 		      else
 			defaulted = 1;
@@ -701,13 +680,13 @@ print_reductions (FILE *out, int state)
 			  rule = LAruleno[default_LA];
 			  fprintf (out,
 				   _("    %-4s\treduce using rule %d (%s)\n"),
-				   tags[i], rule, tags[rlhs[rule]]);
+				   tags[i], rule, tags[rule_table[rule].lhs]);
 			  defaulted = 0;
 			}
 		      rule = LAruleno[j];
 		      fprintf (out,
 			       _("    %-4s\t[reduce using rule %d (%s)]\n"),
-			       tags[i], rule, tags[rlhs[rule]]);
+			       tags[i], rule, tags[rule_table[rule].lhs]);
 		    }
 		}
 
@@ -727,7 +706,7 @@ print_reductions (FILE *out, int state)
 
       if (default_LA >= 0)
 	fprintf (out, _("    $default\treduce using rule %d (%s)\n"),
-		 default_rule, tags[rlhs[default_rule]]);
+		 default_rule, tags[rule_table[default_rule].lhs]);
     }
 }