* src/print.c (print_actions): Output the handling of `$' as the

[bison.git] / src / print.c

diff --git a/src/print.c b/src/print.c
index 977be596d836699711d3053ba788234b5bd22f4c..0a2d0209281fd34c9d79d05cec0e40cb38263052 100644 (file)
--- a/src/print.c
+++ b/src/print.c
@@ -30,6 +30,7 @@
 #include "reader.h"
 #include "print.h"
 #include "reduce.h"
+#include "closure.h"
 
 #if 0
 static void
@@ -48,51 +49,60 @@ static void
 print_core (FILE *out, int state)
 {
   int i;
-  core *statep = state_table[state].state;
+  short *sitems = state_table[state]->items;
+  int snitems   = state_table[state]->nitems;
 
-  if (!statep->nitems)
-    return;
+  /* New experimental feature: if TRACE_FLAGS output all the items of
+     a state, not only its kernel.  */
+  if (trace_flag)
+    {
+      closure (sitems, snitems);
+      sitems = itemset;
+      snitems = nitemset;
+    }
 
-  for (i = 0; i < statep->nitems; i++)
+  if (snitems)
     {
-      short *sp;
-      short *sp1;
-      int rule;
+      for (i = 0; i < snitems; i++)
+       {
+         short *sp;
+         short *sp1;
+         int rule;
 
-      sp1 = sp = ritem + statep->items[i];
+         sp1 = sp = ritem + sitems[i];
 
-      while (*sp > 0)
-       sp++;
+         while (*sp > 0)
+           sp++;
 
-      rule = -(*sp);
-      fprintf (out, "    %s  ->  ", tags[rule_table[rule].lhs]);
+         rule = -(*sp);
+         fprintf (out, "    %s  ->  ", tags[rule_table[rule].lhs]);
 
-      for (sp = ritem + rule_table[rule].rhs; sp < sp1; sp++)
-       fprintf (out, "%s ", tags[*sp]);
+         for (sp = ritem + rule_table[rule].rhs; sp < sp1; sp++)
+           fprintf (out, "%s ", tags[*sp]);
 
-      fputc ('.', out);
+         fputc ('.', out);
 
-      for (/* Nothing */; *sp > 0; ++sp)
-       fprintf (out, " %s", tags[*sp]);
+         for (/* Nothing */; *sp > 0; ++sp)
+           fprintf (out, " %s", tags[*sp]);
+
+         fprintf (out, _("   (rule %d)"), rule);
+         fputc ('\n', out);
+       }
 
-      fprintf (out, _("   (rule %d)"), rule);
       fputc ('\n', out);
     }
-
-  fputc ('\n', out);
 }
 
 static void
 print_actions (FILE *out, int state)
 {
   int i;
-  int k;
 
-  shifts   *shiftp = state_table[state].shift_table;
-  reductions *redp = state_table[state].reduction_table;
-  errs       *errp = err_table[state];
+  shifts   *shiftp = state_table[state]->shifts;
+  reductions *redp = state_table[state]->reductions;
+  errs       *errp = state_table[state]->errs;
 
-  if (!shiftp && !redp)
+  if (!shiftp->nshifts && !redp)
     {
       if (final_state == state)
        fprintf (out, _("    $default\taccept\n"));
@@ -101,37 +111,18 @@ print_actions (FILE *out, int state)
       return;
     }
 
-  if (shiftp)
-    {
-      k = shiftp->nshifts;
-
-      for (i = 0; i < k; i++)
-       {
-         int symbol;
-         int state1 = shiftp->shifts[i];
-         if (!state1)
-           continue;
-         symbol = state_table[state1].accessing_symbol;
-         /* The following line used to be turned off.  */
-         if (ISVAR (symbol))
-           break;
-         if (symbol == 0)      /* I.e. strcmp(tags[symbol],"$")==0 */
-           fprintf (out,
-                    _("    $   \tgo to state %d\n"), state1);
-         else
-           fprintf (out,
-                    _("    %-4s\tshift, and go to state %d\n"),
-                    tags[symbol], state1);
-       }
+  for (i = 0; i < shiftp->nshifts && SHIFT_IS_SHIFT (shiftp, i); i++)
+    if (!SHIFT_IS_DISABLED (shiftp, i))
+      {
+       int state1 = shiftp->shifts[i];
+       int symbol = state_table[state1]->accessing_symbol;
+       fprintf (out,
+                _("    %-4s\tshift, and go to state %d\n"),
+                tags[symbol], state1);
+      }
 
-      if (i > 0)
-       fputc ('\n', out);
-    }
-  else
-    {
-      i = 0;
-      k = 0;
-    }
+  if (i > 0)
+    fputc ('\n', out);
 
   if (errp)
     {
@@ -149,7 +140,7 @@ print_actions (FILE *out, int state)
        fputc ('\n', out);
     }
 
-  if (state_table[state].consistent && redp)
+  if (state_table[state]->consistent && redp)
     {
       int rule = redp->rules[0];
       int symbol = rule_table[rule].lhs;
@@ -161,18 +152,16 @@ print_actions (FILE *out, int state)
       print_reductions (out, state);
     }
 
-  if (i < k)
+  if (i < shiftp->nshifts)
     {
-      for (; i < k; i++)
-       {
-         int symbol;
-         int state1 = shiftp->shifts[i];
-         if (!state1)
-           continue;
-         symbol = state_table[state1].accessing_symbol;
-         fprintf (out, _("    %-4s\tgo to state %d\n"),
-                  tags[symbol], state1);
-       }
+      for (; i < shiftp->nshifts; i++)
+       if (!SHIFT_IS_DISABLED (shiftp, i))
+         {
+           int state1 = shiftp->shifts[i];
+           int symbol = state_table[state1]->accessing_symbol;
+           fprintf (out, _("    %-4s\tgo to state %d\n"),
+                    tags[symbol], state1);
+         }
 
       fputc ('\n', out);
     }
@@ -216,7 +205,7 @@ print_grammar (FILE *out)
   fprintf (out, "  %s\n", _("Number, Line, Rule"));
   for (i = 1; i <= nrules; i++)
     /* Don't print rules disabled in reduce_grammar_tables.  */
-    if (rule_table[i].lhs >= 0)
+    if (rule_table[i].useful)
       {
        fprintf (out, _("  %3d %3d %s ->"),
                 i, rule_table[i].line, tags[rule_table[i].lhs]);
@@ -322,7 +311,7 @@ print_results (void)
     {
       int i;
 
-      /* We used to use just .out if spec_name_prefix (-p) was used, but
+      /* We used to use just .out if SPEC_NAME_PREFIX (-p) was used, but
         that conflicts with Posix.  */
       FILE *out = xfopen (spec_verbose_file, "w");
 
@@ -336,8 +325,15 @@ print_results (void)
 
       print_grammar (out);
 
+      /* New experimental feature: output all the items of a state,
+        not only its kernel.  Requires to run closure, which need
+        memory allocation/deallocation.  */
+      if (trace_flag)
+       new_closure (nitems);
       for (i = 0; i < nstates; i++)
        print_state (out, i);
+      if (trace_flag)
+       free_closure ();
 
       xfclose (out);
     }