Fix a longstanding bug uncovered by bro-0.9a9/src/parse.y, which I

[bison.git] / src / print.c

diff --git a/src/print.c b/src/print.c
index b893c5c9d55ee4495fbd76f704709466626a7c16..cb1600c9fad853e1aef93ae48921a208b9c79dfd 100644 (file)
--- a/src/print.c
+++ b/src/print.c
@@ -1,5 +1,7 @@
 /* Print information on generated parser, for bison,
 /* Print information on generated parser, for bison,

-   Copyright 1984, 1986, 1989, 2000, 2001 Free Software Foundation, Inc.
+
+   Copyright (C) 1984, 1986, 1989, 2000, 2001, 2002, 2003, 2004, 2005
+   Free Software Foundation, Inc.

 
    This file is part of Bison, the GNU Compiler Compiler.
 
 
    This file is part of Bison, the GNU Compiler Compiler.
 


@@ -15,26 +17,30 @@
 
    You should have received a copy of the GNU General Public License
    along with Bison; see the file COPYING.  If not, write to
 
    You should have received a copy of the GNU General Public License
    along with Bison; see the file COPYING.  If not, write to

-   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
-
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */

 
 

+#include <config.h>

 #include "system.h"
 #include "system.h"

-#include "quotearg.h"
-#include "files.h"
-#include "gram.h"
+
+#include <bitset.h>
+#include <quotearg.h>
+

 #include "LR0.h"
 #include "LR0.h"

-#include "lalr.h"
+#include "closure.h"

 #include "conflicts.h"
 #include "conflicts.h"

+#include "files.h"

 #include "getargs.h"
 #include "getargs.h"

-#include "state.h"
-#include "reader.h"
+#include "gram.h"
+#include "lalr.h"

 #include "print.h"
 #include "print.h"

+#include "reader.h"

 #include "reduce.h"
 #include "reduce.h"

-#include "closure.h"
+#include "state.h"
+#include "symtab.h"

 
 

-static unsigned *shiftset = NULL;
-static unsigned *lookaheadset = NULL;
+static bitset shift_set;
+static bitset look_ahead_set;

 
 #if 0
 static void
 
 #if 0
 static void


@@ -44,305 +50,382 @@ print_token (int extnum, int token)
 }
 #endif
 
 }
 #endif
 

-static inline const char *
-escape (const char *s)
-{
-  return quotearg_n_style (1, escape_quoting_style, s);
-}
+\f
+
+/*---------------------------------------.
+| *WIDTH := max (*WIDTH, strlen (STR)).  |
+`---------------------------------------*/

 
 

-/* Be cautious not to use twice the same slot in a single expression. */
-static inline const char *
-escape2 (const char *s)
+static void
+max_length (size_t *width, const char *str)

 {
 {

-  return quotearg_n_style (2, escape_quoting_style, s);
+  size_t len = strlen (str);
+  if (len > *width)
+    *width = len;

 }
 
 }
 

-\f

 /*--------------------------------.
 | Report information on a state.  |
 `--------------------------------*/
 
 static void
 /*--------------------------------.
 | Report information on a state.  |
 `--------------------------------*/
 
 static void

-print_core (FILE *out, state_t *state)
+print_core (FILE *out, state *s)

 {
 {

-  int i;
-  short *sitems = state->items;
-  int snitems   = state->nitems;
+  size_t i;
+  item_number *sitems = s->items;
+  size_t snritems = s->nitems;
+  symbol *previous_lhs = NULL;

 
 

-  /* New experimental feature: if TRACE_FLAGS output all the items of
-     a state, not only its kernel.  */
-  if (trace_flag)
+  /* Output all the items of a state, not only its kernel.  */
+  if (report_flag & report_itemsets)

     {
     {

-      closure (sitems, snitems);
+      closure (sitems, snritems);

       sitems = itemset;
       sitems = itemset;

-      snitems = nitemset;
+      snritems = nritemset;

     }
 
     }
 

-  if (snitems)
-    {
-      for (i = 0; i < snitems; i++)
-       {
-         short *sp;
-         short *sp1;
-         int rule;
+  if (!snritems)
+    return;

 
 

-         sp1 = sp = ritem + sitems[i];
+  fputc ('\n', out);

 
 

-         while (*sp >= 0)
-           sp++;
+  for (i = 0; i < snritems; i++)
+    {
+      item_number *sp;
+      item_number *sp1;
+      rule_number r;

 
 

-         rule = -(*sp);
-         fprintf (out, "    %s  ->  ", escape (tags[rule_table[rule].lhs]));
+      sp1 = sp = ritem + sitems[i];

 
 

-         for (sp = ritem + rule_table[rule].rhs; sp < sp1; sp++)
-           fprintf (out, "%s ", escape (tags[*sp]));
+      while (*sp >= 0)
+       sp++;

 
 

-         fputc ('.', out);
+      r = item_number_as_rule_number (*sp);

 
 

-         for (/* Nothing */; *sp >= 0; ++sp)
-           fprintf (out, " %s", escape (tags[*sp]));
+      rule_lhs_print (&rules[r], previous_lhs, out);
+      previous_lhs = rules[r].lhs;

 
 

-         fprintf (out, _("   (rule %d)"), rule - 1);
-         fputc ('\n', out);
-       }
+      for (sp = rules[r].rhs; sp < sp1; sp++)
+       fprintf (out, " %s", symbols[*sp]->tag);
+      fputs (" .", out);
+      for (/* Nothing */; *sp >= 0; ++sp)
+       fprintf (out, " %s", symbols[*sp]->tag);
+
+      /* Display the look-ahead tokens?  */
+      if (report_flag & report_look_ahead_tokens)
+       state_rule_look_ahead_tokens_print (s, &rules[r], out);

 
       fputc ('\n', out);
     }
 }
 
 
 
       fputc ('\n', out);
     }
 }
 
 

+/*------------------------------------------------------------.
+| Report the shifts iff DISPLAY_SHIFTS_P or the gotos of S on |
+| OUT.                                                        |
+`------------------------------------------------------------*/
+

 static void
 static void

-print_shifts (FILE *out, state_t *state)
+print_transitions (state *s, FILE *out, bool display_transitions_p)

 {
 {

+  transitions *trans = s->transitions;
+  size_t width = 0;

   int i;
   int i;

-  shifts *shiftp = state->shifts;

 
 

-  for (i = 0; i < shiftp->nshifts && SHIFT_IS_SHIFT (shiftp, i); i++)
-    if (!SHIFT_IS_DISABLED (shiftp, i))
+  /* Compute the width of the look-ahead token column.  */
+  for (i = 0; i < trans->num; i++)
+    if (!TRANSITION_IS_DISABLED (trans, i)
+       && TRANSITION_IS_SHIFT (trans, i) == display_transitions_p)

       {
       {

-       int state1 = shiftp->shifts[i];
-       int symbol = state_table[state1]->accessing_symbol;
-       fprintf (out,
-                _("    %-4s\tshift, and go to state %d\n"),
-                escape (tags[symbol]), state1);
+       symbol *sym = symbols[TRANSITION_SYMBOL (trans, i)];
+       max_length (&width, sym->tag);

       }
 
       }
 

-  if (i > 0)
-    fputc ('\n', out);
+  /* Nothing to report. */
+  if (!width)
+    return;
+
+  fputc ('\n', out);
+  width += 2;
+
+  /* Report look-ahead tokens and shifts.  */
+  for (i = 0; i < trans->num; i++)
+    if (!TRANSITION_IS_DISABLED (trans, i)
+       && TRANSITION_IS_SHIFT (trans, i) == display_transitions_p)
+      {
+       symbol *sym = symbols[TRANSITION_SYMBOL (trans, i)];
+       const char *tag = sym->tag;
+       state *s1 = trans->states[i];
+       int j;
+
+       fprintf (out, "    %s", tag);
+       for (j = width - strlen (tag); j > 0; --j)
+         fputc (' ', out);
+       if (display_transitions_p)
+         fprintf (out, _("shift, and go to state %d\n"), s1->number);
+       else
+         fprintf (out, _("go to state %d\n"), s1->number);
+      }

 }
 
 
 }
 
 

+/*--------------------------------------------------------.
+| Report the explicit errors of S raised from %nonassoc.  |
+`--------------------------------------------------------*/
+

 static void
 static void

-print_errs (FILE *out, state_t *state)
+print_errs (FILE *out, state *s)

 {
 {

-  errs *errp = state->errs;
+  errs *errp = s->errs;
+  size_t width = 0;

   int i;
 
   int i;
 

-  for (i = 0; i < errp->nerrs; ++i)
-    if (errp->errs[i])
-      fprintf (out, _("    %-4s\terror (nonassociative)\n"),
-              escape (tags[errp->errs[i]]));
+  /* Compute the width of the look-ahead token column.  */
+  for (i = 0; i < errp->num; ++i)
+    if (errp->symbols[i])
+      max_length (&width, errp->symbols[i]->tag);
+
+  /* Nothing to report. */
+  if (!width)
+    return;

 
 

-  if (i > 0)
-    fputc ('\n', out);
+  fputc ('\n', out);
+  width += 2;
+
+  /* Report look-ahead tokens and errors.  */
+  for (i = 0; i < errp->num; ++i)
+    if (errp->symbols[i])
+      {
+       const char *tag = errp->symbols[i]->tag;
+       int j;
+       fprintf (out, "    %s", tag);
+       for (j = width - strlen (tag); j > 0; --j)
+         fputc (' ', out);
+       fputs (_("error (nonassociative)\n"), out);
+      }

 }
 
 
 }
 
 

-static void
-print_gotos (FILE *out, state_t *state)
+/*-------------------------------------------------------------.
+| Return the default rule of S if it has one, NULL otherwise.  |
+`-------------------------------------------------------------*/
+
+static rule *
+state_default_rule (state *s)

 {
 {

+  reductions *reds = s->reductions;
+  rule *default_rule = NULL;
+  int cmax = 0;

   int i;
   int i;

-  shifts *shiftp = state->shifts;

 
 

-  for (i = 0; i < shiftp->nshifts && SHIFT_IS_SHIFT (shiftp, i); i++)
-    /* Skip token shifts.  */;
+  /* No need for a look-ahead.  */
+  if (s->consistent)
+    return reds->rules[0];

 
 

-  if (i < shiftp->nshifts)
+  /* 1. Each reduction is possibly masked by the look-ahead tokens on which
+     we shift (S/R conflicts)...  */
+  bitset_zero (shift_set);
+  {
+    transitions *trans = s->transitions;
+    FOR_EACH_SHIFT (trans, i)
+      {
+       /* If this state has a shift for the error token, don't use a
+            default rule.  */
+       if (TRANSITION_IS_ERROR (trans, i))
+         return NULL;
+       bitset_set (shift_set, TRANSITION_SYMBOL (trans, i));
+      }
+  }
+
+  /* 2. Each reduction is possibly masked by the look-ahead tokens on which
+     we raise an error (due to %nonassoc).  */
+  {
+    errs *errp = s->errs;
+    for (i = 0; i < errp->num; i++)
+      if (errp->symbols[i])
+       bitset_set (shift_set, errp->symbols[i]->number);
+  }
+
+  for (i = 0; i < reds->num; ++i)

     {
     {

-      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"),
-                    escape (tags[symbol]), state1);
-         }
+      int count = 0;

 
 

-      fputc ('\n', out);
-    }
-}
+      /* How many non-masked look-ahead tokens are there for this
+        reduction?  */
+      bitset_andn (look_ahead_set, reds->look_ahead_tokens[i], shift_set);
+      count = bitset_count (look_ahead_set);

 
 

-static void
-print_reductions (FILE *out, state_t *state)
-{
-  int i;
-  shifts *shiftp = state->shifts;
-  reductions *redp = state->reductions;
-  errs *errp = state->errs;
-  int nodefault = 0;
-
-  if (redp->nreds == 0)
-    return;
+      if (count > cmax)
+       {
+         cmax = count;
+         default_rule = reds->rules[i];
+       }

 
 

-  if (state->consistent)
-    {
-      int rule = redp->rules[0];
-      int symbol = rule_table[rule].lhs;
-      fprintf (out, _("    $default\treduce using rule %d (%s)\n\n"),
-              rule - 1, escape (tags[symbol]));
-      return;
+      /* 3. And finally, each reduction is possibly masked by previous
+        reductions (in R/R conflicts, we keep the first reductions).
+        */
+      bitset_or (shift_set, shift_set, reds->look_ahead_tokens[i]);

     }
 
     }
 

-  for (i = 0; i < tokensetsize; i++)
-    shiftset[i] = 0;
+  return default_rule;
+}

 
 

-  for (i = 0; i < shiftp->nshifts && SHIFT_IS_SHIFT (shiftp, i); i++)
-    if (!SHIFT_IS_DISABLED (shiftp, i))
-      {
-       /* if this state has a shift for the error token, don't use a
-          default rule.  */
-       if (SHIFT_IS_ERROR (shiftp, i))
-         nodefault = 1;
-       SETBIT (shiftset, SHIFT_SYMBOL (shiftp, i));
-      }

 
 

-  for (i = 0; i < errp->nerrs; i++)
-    if (errp->errs[i])
-      SETBIT (shiftset, errp->errs[i]);
+/*--------------------------------------------------------------------------.
+| Report a reduction of RULE on LOOK_AHEAD_TOKEN (which can be `default').  |
+| If not ENABLED, the rule is masked by a shift or a reduce (S/R and        |
+| R/R conflicts).                                                           |
+`--------------------------------------------------------------------------*/

 
 

-  if (state->nlookaheads == 1 && !nodefault)
-    {
-      int k;
-      int default_rule = LAruleno[state->lookaheadsp];
+static void
+print_reduction (FILE *out, size_t width,
+                const char *look_ahead_token,
+                rule *r, bool enabled)
+{
+  int j;
+  fprintf (out, "    %s", look_ahead_token);
+  for (j = width - strlen (look_ahead_token); j > 0; --j)
+    fputc (' ', out);
+  if (!enabled)
+    fputc ('[', out);
+  if (r->number)
+    fprintf (out, _("reduce using rule %d (%s)"), r->number, r->lhs->tag);
+  else
+    fprintf (out, _("accept"));
+  if (!enabled)
+    fputc (']', out);
+  fputc ('\n', out);
+}

 
 

-      for (k = 0; k < tokensetsize; ++k)
-       lookaheadset[k] = LA (state->lookaheadsp)[k] & shiftset[k];

 
 

-      for (i = 0; i < ntokens; i++)
-       if (BITISSET (lookaheadset, i))
-         fprintf (out, _("    %-4s\t[reduce using rule %d (%s)]\n"),
-                  escape (tags[i]), default_rule - 1,
-                  escape2 (tags[rule_table[default_rule].lhs]));
+/*-------------------------------------------.
+| Report on OUT the reduction actions of S.  |
+`-------------------------------------------*/

 
 

-      fprintf (out, _("    $default\treduce using rule %d (%s)\n\n"),
-              default_rule - 1, escape (tags[rule_table[default_rule].lhs]));
-    }
-  else if (state->nlookaheads >= 1)
-    {
-      int cmax = 0;
-      int default_LA = -1;
-      int default_rule = 0;
+static void
+print_reductions (FILE *out, state *s)
+{
+  transitions *trans = s->transitions;
+  reductions *reds = s->reductions;
+  rule *default_rule = NULL;
+  size_t width = 0;
+  int i, j;

 
 

-      if (!nodefault)
-       for (i = 0; i < state->nlookaheads; ++i)
-         {
-           int count = 0;
-           int j, k;
+  if (reds->num == 0)
+    return;

 
 

-           for (k = 0; k < tokensetsize; ++k)
-             lookaheadset[k] = LA (state->lookaheadsp + i)[k] & ~shiftset[k];
+  default_rule = state_default_rule (s);

 
 

-           for (j = 0; j < ntokens; j++)
-             if (BITISSET (lookaheadset, j))
-               count++;
+  bitset_zero (shift_set);
+  FOR_EACH_SHIFT (trans, i)
+    bitset_set (shift_set, TRANSITION_SYMBOL (trans, i));

 
 

-           if (count > cmax)
-             {
-               cmax = count;
-               default_LA = state->lookaheadsp + i;
-               default_rule = LAruleno[state->lookaheadsp + i];
-             }
+  /* Compute the width of the look-ahead token column.  */
+  if (default_rule)
+    width = strlen (_("$default"));

 
 

-           for (k = 0; k < tokensetsize; ++k)
-             shiftset[k] |= lookaheadset[k];
-         }
+  if (reds->look_ahead_tokens)
+    for (i = 0; i < ntokens; i++)
+      {
+       bool count = bitset_test (shift_set, i);

 
 

-      for (i = 0; i < tokensetsize; i++)
-       shiftset[i] = 0;
+       for (j = 0; j < reds->num; ++j)
+         if (bitset_test (reds->look_ahead_tokens[j], i))
+           {
+             if (! count)
+               {
+                 if (reds->rules[j] != default_rule)
+                   max_length (&width, symbols[i]->tag);
+                 count = true;
+               }
+             else
+               {
+                 max_length (&width, symbols[i]->tag);
+               }
+           }
+      }

 
 

-      for (i = 0; i < shiftp->nshifts && SHIFT_IS_SHIFT (shiftp, i); i++)
-       if (!SHIFT_IS_DISABLED (shiftp, i))
-         SETBIT (shiftset, SHIFT_SYMBOL (shiftp, i));
+  /* Nothing to report. */
+  if (!width)
+    return;

 
 

-      for (i = 0; i < ntokens; i++)
-       {
-         int j;
-         int defaulted = 0;
-         int count = BITISSET (shiftset, i);
+  fputc ('\n', out);
+  width += 2;

 
 

-         for (j = 0; j < state->nlookaheads; ++j)
+  /* Report look-ahead tokens (or $default) and reductions.  */
+  if (reds->look_ahead_tokens)
+    for (i = 0; i < ntokens; i++)
+      {
+       bool defaulted = false;
+       bool count = bitset_test (shift_set, i);
+
+       for (j = 0; j < reds->num; ++j)
+         if (bitset_test (reds->look_ahead_tokens[j], i))

            {
            {

-             if (BITISSET (LA (state->lookaheadsp + j), i))
+             if (! count)

                {
                {

-                 if (count == 0)
-                   {
-                     if (state->lookaheadsp + j != default_LA)
-                       fprintf (out,
-                                _("    %-4s\treduce using rule %d (%s)\n"),
-                                escape (tags[i]),
-                                LAruleno[state->lookaheadsp + j] - 1,
-                                escape2 (tags[rule_table[LAruleno[state->lookaheadsp + j]].lhs]));
-                     else
-                       defaulted = 1;
-
-                     count++;
-                   }
+                 if (reds->rules[j] != default_rule)
+                   print_reduction (out, width,
+                                    symbols[i]->tag,
+                                    reds->rules[j], true);

                  else
                  else

-                   {
-                     if (defaulted)
-                       fprintf (out,
-                                _("    %-4s\treduce using rule %d (%s)\n"),
-                                escape (tags[i]),
-                                LAruleno[default_LA] - 1,
-                                escape2 (tags[rule_table[LAruleno[default_LA]].lhs]));
-                     defaulted = 0;
-                     fprintf (out,
-                              _("    %-4s\t[reduce using rule %d (%s)]\n"),
-                              escape (tags[i]),
-                              LAruleno[state->lookaheadsp + j] - 1,
-                              escape2 (tags[rule_table[LAruleno[state->lookaheadsp + j]].lhs]));
-                   }
+                   defaulted = true;
+                 count = true;
+               }
+             else
+               {
+                 if (defaulted)
+                   print_reduction (out, width,
+                                    symbols[i]->tag,
+                                    default_rule, true);
+                 defaulted = false;
+                 print_reduction (out, width,
+                                  symbols[i]->tag,
+                                  reds->rules[j], false);

                }
            }
                }
            }

-       }
+      }

 
 

-      if (default_LA >= 0)
-       fprintf (out, _("    $default\treduce using rule %d (%s)\n"),
-                default_rule - 1,
-                escape (tags[rule_table[default_rule].lhs]));
-    }
+  if (default_rule)
+    print_reduction (out, width,
+                    _("$default"), default_rule, true);

 }
 
 
 }
 
 

+/*--------------------------------------------------------------.
+| Report on OUT all the actions (shifts, gotos, reductions, and |
+| explicit erros from %nonassoc) of S.                          |
+`--------------------------------------------------------------*/
+

 static void
 static void

-print_actions (FILE *out, state_t *state)
+print_actions (FILE *out, state *s)

 {
 {

-  reductions *redp = state->reductions;
-  shifts *shiftp = state->shifts;
+  /* Print shifts.  */
+  print_transitions (s, out, true);
+  print_errs (out, s);
+  print_reductions (out, s);
+  /* Print gotos.  */
+  print_transitions (s, out, false);
+}

 
 

-  if (shiftp->nshifts == 0 && redp->nreds == 0)
-    {
-      if (final_state == state->number)
-       fprintf (out, _("    $default\taccept\n"));
-      else
-       fprintf (out, _("    NO ACTIONS\n"));
-      return;
-    }

 
 

-  print_shifts (out, state);
-  print_errs (out, state);
-  print_reductions (out, state);
-  print_gotos (out, state);
-}
+/*----------------------------------.
+| Report all the data on S on OUT.  |
+`----------------------------------*/

 
 static void
 
 static void

-print_state (FILE *out, state_t *state)
+print_state (FILE *out, state *s)

 {
 {

-  fprintf (out, _("state %d"), state->number);
-  fputs ("\n\n", out);
-  print_core (out, state);
-  print_actions (out, state);

   fputs ("\n\n", out);
   fputs ("\n\n", out);

+  fprintf (out, _("state %d"), s->number);
+  fputc ('\n', out);
+  print_core (out, s);
+  print_actions (out, s);
+  if ((report_flag & report_solved_conflicts) && s->solved_conflicts)
+    {
+      fputc ('\n', out);
+      fputs (s->solved_conflicts, out);
+    }

 }
 \f
 /*-----------------------------------------.
 }
 \f
 /*-----------------------------------------.


@@ -363,48 +446,33 @@ do {                                              \
 static void
 print_grammar (FILE *out)
 {
 static void
 print_grammar (FILE *out)
 {

-  int i, j;
-  short *rule;
+  symbol_number i;

   char buffer[90];
   int column = 0;
 
   char buffer[90];
   int column = 0;
 

-  /* rule # : LHS -> RHS */
-  fprintf (out, "%s\n\n", _("Grammar"));
-  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].useful)
-      {
-       fprintf (out, _("  %3d %3d %s ->"),
-                i - 1, rule_table[i].line, escape (tags[rule_table[i].lhs]));
-       rule = &ritem[rule_table[i].rhs];
-       if (*rule >= 0)
-         while (*rule >= 0)
-           fprintf (out, " %s", escape (tags[*rule++]));
-       else
-         fprintf (out, " /* %s */", _("empty"));
-       fputc ('\n', out);
-      }
-  fputs ("\n\n", out);
-
+  grammar_rules_print (out);

 
   /* TERMINAL (type #) : rule #s terminal is on RHS */
   fprintf (out, "%s\n\n", _("Terminals, with rules where they appear"));
 
   /* TERMINAL (type #) : rule #s terminal is on RHS */
   fprintf (out, "%s\n\n", _("Terminals, with rules where they appear"));

-  for (i = 0; i <= max_user_token_number; i++)
-    if (token_translations[i] != 2)
+  for (i = 0; i < max_user_token_number + 1; i++)
+    if (token_translations[i] != undeftoken->number)

       {
       {

+       const char *tag = symbols[token_translations[i]]->tag;
+       rule_number r;
+       item_number *rhsp;
+

        buffer[0] = 0;
        buffer[0] = 0;

-       column = strlen (escape (tags[token_translations[i]]));
-       fputs (escape (tags[token_translations[i]]), out);
+       column = strlen (tag);
+       fputs (tag, out);

        END_TEST (50);
        sprintf (buffer, " (%d)", i);
 
        END_TEST (50);
        sprintf (buffer, " (%d)", i);
 

-       for (j = 1; j <= nrules; j++)
-         for (rule = &ritem[rule_table[j].rhs]; *rule >= 0; rule++)
-           if (*rule == token_translations[i])
+       for (r = 0; r < nrules; r++)
+         for (rhsp = rules[r].rhs; *rhsp >= 0; rhsp++)
+           if (item_number_as_symbol_number (*rhsp) == token_translations[i])

              {
                END_TEST (65);
              {
                END_TEST (65);

-               sprintf (buffer + strlen (buffer), " %d", j - 1);
+               sprintf (buffer + strlen (buffer), " %d", r);

                break;
              }
        fprintf (out, "%s\n", buffer);
                break;
              }
        fprintf (out, "%s\n", buffer);


@@ -413,16 +481,19 @@ print_grammar (FILE *out)
 
 
   fprintf (out, "%s\n\n", _("Nonterminals, with rules where they appear"));
 
 
   fprintf (out, "%s\n\n", _("Nonterminals, with rules where they appear"));

-  for (i = ntokens; i <= nsyms - 1; i++)
+  for (i = ntokens; i < nsyms; i++)

     {
       int left_count = 0, right_count = 0;
     {
       int left_count = 0, right_count = 0;

+      rule_number r;
+      const char *tag = symbols[i]->tag;

 
 

-      for (j = 1; j <= nrules; j++)
+      for (r = 0; r < nrules; r++)

        {
        {

-         if (rule_table[j].lhs == i)
+         item_number *rhsp;
+         if (rules[r].lhs->number == i)

            left_count++;
            left_count++;

-         for (rule = &ritem[rule_table[j].rhs]; *rule >= 0; rule++)
-           if (*rule == i)
+         for (rhsp = rules[r].rhs; *rhsp >= 0; rhsp++)
+           if (item_number_as_symbol_number (*rhsp) == i)

              {
                right_count++;
                break;
              {
                right_count++;
                break;


@@ -430,8 +501,8 @@ print_grammar (FILE *out)
        }
 
       buffer[0] = 0;
        }
 
       buffer[0] = 0;

-      fputs (escape (tags[i]), out);
-      column = strlen (escape (tags[i]));
+      fputs (tag, out);
+      column = strlen (tag);

       sprintf (buffer, " (%d)", i);
       END_TEST (0);
 
       sprintf (buffer, " (%d)", i);
       END_TEST (0);
 


@@ -440,11 +511,11 @@ print_grammar (FILE *out)
          END_TEST (50);
          sprintf (buffer + strlen (buffer), _(" on left:"));
 
          END_TEST (50);
          sprintf (buffer + strlen (buffer), _(" on left:"));
 

-         for (j = 1; j <= nrules; j++)
+         for (r = 0; r < nrules; r++)

            {
              END_TEST (65);
            {
              END_TEST (65);

-             if (rule_table[j].lhs == i)
-               sprintf (buffer + strlen (buffer), " %d", j - 1);
+             if (rules[r].lhs->number == i)
+               sprintf (buffer + strlen (buffer), " %d", r);

            }
        }
 
            }
        }
 


@@ -454,56 +525,50 @@ print_grammar (FILE *out)
            sprintf (buffer + strlen (buffer), ",");
          END_TEST (50);
          sprintf (buffer + strlen (buffer), _(" on right:"));
            sprintf (buffer + strlen (buffer), ",");
          END_TEST (50);
          sprintf (buffer + strlen (buffer), _(" on right:"));

-         for (j = 1; j <= nrules; j++)
+         for (r = 0; r < nrules; r++)

            {
            {

-             for (rule = &ritem[rule_table[j].rhs]; *rule >= 0; rule++)
-               if (*rule == i)
+             item_number *rhsp;
+             for (rhsp = rules[r].rhs; *rhsp >= 0; rhsp++)
+               if (item_number_as_symbol_number (*rhsp) == i)

                  {
                    END_TEST (65);
                  {
                    END_TEST (65);

-                   sprintf (buffer + strlen (buffer), " %d", j - 1);
+                   sprintf (buffer + strlen (buffer), " %d", r);

                    break;
                  }
            }
        }
       fprintf (out, "%s\n", buffer);
     }
                    break;
                  }
            }
        }
       fprintf (out, "%s\n", buffer);
     }

-  fputs ("\n\n", out);

 }
 \f
 void
 print_results (void)
 {
 }
 \f
 void
 print_results (void)
 {

-  int i;
+  state_number i;

 
   /* 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");
 
 
   /* 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");
 

-  size_t size = obstack_object_size (&output_obstack);
-  fwrite (obstack_finish (&output_obstack), 1, size, out);
-  obstack_free (&output_obstack, NULL);
-
-  if (size)
-    fputs ("\n\n", out);
-

   reduce_output (out);
   reduce_output (out);

+  grammar_rules_partial_print (out,
+                              _("Rules never reduced"), rule_never_reduced_p);

   conflicts_output (out);
 
   print_grammar (out);
 
   conflicts_output (out);
 
   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);
+  /* If the whole state item sets, not only the kernels, are wanted,
+     `closure' will be run, which needs memory allocation/deallocation.   */
+  if (report_flag & report_itemsets)
+    new_closure (nritems);

   /* Storage for print_reductions.  */
   /* Storage for print_reductions.  */

-  shiftset = XCALLOC (unsigned, tokensetsize);
-  lookaheadset = XCALLOC (unsigned, tokensetsize);
+  shift_set =  bitset_create (ntokens, BITSET_FIXED);
+  look_ahead_set = bitset_create (ntokens, BITSET_FIXED);

   for (i = 0; i < nstates; i++)
   for (i = 0; i < nstates; i++)

-    print_state (out, state_table[i]);
-  free (shiftset);
-  free (lookaheadset);
-  if (trace_flag)
+    print_state (out, states[i]);
+  bitset_free (shift_set);
+  bitset_free (look_ahead_set);
+  if (report_flag & report_itemsets)

     free_closure ();
 
   xfclose (out);
     free_closure ();
 
   xfclose (out);