X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/8b3df748a3ce59d3f88b84677a8bee2a8ad2d82b..f377f69fec28013c79db4efe12bbb9d48987fb2c:/src/closure.c

diff --git a/src/closure.c b/src/closure.c
index 191558a3..3d5ac28d 100644
--- a/src/closure.c
+++ b/src/closure.c
@@ -22,6 +22,7 @@
 #include "quotearg.h"
 #include "bitset.h"
 #include "bitsetv.h"
+#include "bitsetv-print.h"
 #include "getargs.h"
 #include "symtab.h"
 #include "gram.h"
@@ -30,8 +31,8 @@
 #include "derives.h"
 
 /* NITEMSET is the size of the array ITEMSET.  */
-short *itemset;
-int nitemset;
+item_number_t *itemset;
+int nritemset;
 
 static bitset ruleset;
 
@@ -49,17 +50,16 @@ static bitsetv firsts = NULL;
 `-----------------*/
 
 static void
-print_closure (const char *title, short *array, size_t size)
+print_closure (const char *title, item_number_t *array, size_t size)
 {
   size_t i;
   fprintf (stderr, "Closure: %s\n", title);
   for (i = 0; i < size; ++i)
     {
-      short *rp;
+      item_number_t *rp;
       fprintf (stderr, "  %2d: .", array[i]);
       for (rp = &ritem[array[i]]; *rp >= 0; ++rp)
-	fprintf (stderr, " %s",
-		 quotearg_style (escape_quoting_style, symbols[*rp]->tag));
+	fprintf (stderr, " %s", symbols[*rp]->tag);
       fprintf (stderr, "  (rule %d)\n", -*rp - 1);
     }
   fputs ("\n\n", stderr);
@@ -69,19 +69,18 @@ print_closure (const char *title, short *array, size_t size)
 static void
 print_firsts (void)
 {
-  int i, j;
+  symbol_number_t i, j;
 
   fprintf (stderr, "FIRSTS\n");
   for (i = ntokens; i < nsyms; i++)
     {
-      fprintf (stderr, "\t%s firsts\n",
-	       quotearg_style (escape_quoting_style, symbols[i]->tag));
-      for (j = 0; j < nvars; j++)
-	if (bitset_test (FIRSTS (i), j))
-	  fprintf (stderr, "\t\t%d (%s)\n",
-		   j + ntokens,
-		   quotearg_style (escape_quoting_style,
-				   symbols[j + ntokens]->tag));
+      bitset_iterator iter;
+      fprintf (stderr, "\t%s firsts\n", symbols[i]->tag);
+      BITSET_FOR_EACH (iter, FIRSTS (i), j, 0)
+	{
+	  fprintf (stderr, "\t\t%s\n",
+		   symbols[j + ntokens]->tag);
+	}
     }
   fprintf (stderr, "\n\n");
 }
@@ -90,75 +89,22 @@ print_firsts (void)
 static void
 print_fderives (void)
 {
-  int i, j;
+  int i;
+  rule_number_t r;
 
   fprintf (stderr, "FDERIVES\n");
   for (i = ntokens; i < nsyms; i++)
     {
-      fprintf (stderr, "\t%s derives\n",
-	       quotearg_style (escape_quoting_style, symbols[i]->tag));
-      for (j = 0; j < nrules + 1; j++)
-	if (bitset_test (FDERIVES (i), j))
-	  {
-	    short *rhsp;
-	    fprintf (stderr, "\t\t%d:", j - 1);
-	    for (rhsp = rules[j].rhs; *rhsp >= 0; ++rhsp)
-	      fprintf (stderr, " %s",
-		       quotearg_style (escape_quoting_style,
-				       symbols[*rhsp]->tag));
-	    fputc ('\n', stderr);
-	  }
+      bitset_iterator iter;
+      fprintf (stderr, "\t%s derives\n", symbols[i]->tag);
+      BITSET_FOR_EACH (iter, FDERIVES (i), r, 0)
+	{
+	  fprintf (stderr, "\t\t%3d ", r);
+	  rule_rhs_print (&rules[r], stderr);
+	}
     }
   fprintf (stderr, "\n\n");
 }
-
-/*--------------------------------------------------------.
-| Display the MATRIX array of SIZE bitsets of size SIZE.  |
-`--------------------------------------------------------*/
-
-static void
-bitmatrix_print (const char *title, bitsetv matrix)
-{
-  size_t i, j;
-  size_t size = bitset_size (matrix[0]);
-
-  /* Title. */
-  fprintf (stderr, "%s BEGIN\n", title);
-
-  /* Column numbers. */
-  fputs ("   ", stderr);
-  for (i = 0; i < size; ++i)
-    putc (i / 10 ? '0' + i / 10 : ' ', stderr);
-  putc ('\n', stderr);
-  fputs ("   ", stderr);
-  for (i = 0; i < size; ++i)
-    fprintf (stderr, "%d", i % 10);
-  putc ('\n', stderr);
-
-  /* Bar. */
-  fputs ("  .", stderr);
-  for (i = 0; i < size; ++i)
-    putc ('-', stderr);
-  fputs (".\n", stderr);
-
-  /* Contents. */
-  for (i = 0; i < size; ++i)
-    {
-      fprintf (stderr, "%2d|", i);
-      for (j = 0; j < size; ++j)
-	fputs (bitset_test (matrix[i], j) ? "1" : " ", stderr);
-      fputs ("|\n", stderr);
-    }
-
-  /* Bar. */
-  fputs ("  `", stderr);
-  for (i = 0; i < size; ++i)
-    putc ('-', stderr);
-  fputs ("'\n", stderr);
-
-  /* End title. */
-  fprintf (stderr, "%s END\n\n", title);
-}
 
 /*------------------------------------------------------------------.
 | Set FIRSTS to be an NVARS array of NVARS bitsets indicating which |
@@ -174,25 +120,25 @@ bitmatrix_print (const char *title, bitsetv matrix)
 static void
 set_firsts (void)
 {
-  int i, j;
+  symbol_number_t i, j;
 
   firsts = bitsetv_create (nvars, nvars, BITSET_FIXED);
 
   for (i = ntokens; i < nsyms; i++)
-    for (j = 0; derives[i][j] >= 0; ++j)
+    for (j = 0; derives[i][j]; ++j)
       {
-	int symbol = rules[derives[i][j]].rhs[0];
+	int symbol = derives[i][j]->rhs[0];
 	if (ISVAR (symbol))
 	  bitset_set (FIRSTS (i), symbol - ntokens);
       }
 
-  if (trace_flag)
-    bitmatrix_print ("RTC: Input", firsts);
+  if (trace_flag & trace_sets)
+    bitsetv_matrix_dump (stderr, "RTC: Firsts Input", firsts);
   bitsetv_reflexive_transitive_closure (firsts);
-  if (trace_flag)
-    bitmatrix_print ("RTC: Output", firsts);
+  if (trace_flag & trace_sets)
+    bitsetv_matrix_dump (stderr, "RTC: Firsts Output", firsts);
 
-  if (trace_flag)
+  if (trace_flag & trace_sets)
     print_firsts ();
 }
 
@@ -209,31 +155,33 @@ set_firsts (void)
 static void
 set_fderives (void)
 {
-  int i, j, k;
+  symbol_number_t i, j;
+  rule_number_t k;
 
-  fderives = bitsetv_create (nvars, nrules + 1, BITSET_FIXED);
+  fderives = bitsetv_create (nvars, nrules, BITSET_FIXED);
 
   set_firsts ();
 
   for (i = ntokens; i < nsyms; ++i)
     for (j = ntokens; j < nsyms; ++j)
       if (bitset_test (FIRSTS (i), j - ntokens))
-	for (k = 0; derives[j][k] > 0; ++k)
-	  bitset_set (FDERIVES (i), derives[j][k]);
+	for (k = 0; derives[j][k]; ++k)
+	  bitset_set (FDERIVES (i), derives[j][k]->number);
 
-  if (trace_flag)
+  if (trace_flag & trace_sets)
     print_fderives ();
 
   bitsetv_free (firsts);
 }
+
 
 
 void
 new_closure (int n)
 {
-  itemset = XCALLOC (short, n);
+  itemset = XCALLOC (item_number_t, n);
 
-  ruleset = bitset_create (nrules + 1, BITSET_FIXED);
+  ruleset = bitset_create (nrules, BITSET_FIXED);
 
   set_fderives ();
 }
@@ -241,15 +189,17 @@ new_closure (int n)
 
 
 void
-closure (short *core, int n)
+closure (item_number_t *core, int n)
 {
   /* Index over CORE. */
   int c;
 
   /* A bit index over RULESET. */
-  int ruleno;
+  rule_number_t ruleno;
+
+  bitset_iterator iter;
 
-  if (trace_flag)
+  if (trace_flag & trace_sets)
     print_closure ("input", core, n);
 
   bitset_zero (ruleset);
@@ -258,31 +208,30 @@ closure (short *core, int n)
     if (ISVAR (ritem[core[c]]))
       bitset_or (ruleset, ruleset, FDERIVES (ritem[core[c]]));
 
-  nitemset = 0;
+  nritemset = 0;
   c = 0;
-  for (ruleno = 0; ruleno < nrules + 1; ++ruleno)
-    if (bitset_test (ruleset, ruleno))
-      {
-	int itemno = rules[ruleno].rhs - ritem;
-	while (c < n && core[c] < itemno)
-	  {
-	    itemset[nitemset] = core[c];
-	    nitemset++;
-	    c++;
-	  }
-	itemset[nitemset] = itemno;
-	nitemset++;
-      }
+  BITSET_FOR_EACH (iter, ruleset, ruleno, 0)
+    {
+      item_number_t itemno = rules[ruleno].rhs - ritem;
+      while (c < n && core[c] < itemno)
+	{
+	  itemset[nritemset] = core[c];
+	  nritemset++;
+	  c++;
+	}
+      itemset[nritemset] = itemno;
+      nritemset++;
+    };
 
   while (c < n)
     {
-      itemset[nitemset] = core[c];
-      nitemset++;
+      itemset[nritemset] = core[c];
+      nritemset++;
       c++;
     }
 
-  if (trace_flag)
-    print_closure ("output", itemset, nitemset);
+  if (trace_flag & trace_sets)
+    print_closure ("output", itemset, nritemset);
 }