Use some of gnulib's new modules, taken from coreutils.

[bison.git] / src / gram.c

diff --git a/src/gram.c b/src/gram.c
index d157608a0064244198b9907efab6fa7e2598546c..28666b0c8cf4521770adabf08869257ea18c5fb4 100644 (file)
--- a/src/gram.c
+++ b/src/gram.c
@@ -1,5 +1,7 @@
-/* Allocate input grammar variables for bison,
-   Copyright (C) 1984, 1986, 1989, 2001, 2002 Free Software Foundation, Inc.
+/* Allocate input grammar variables for Bison.
+
+   Copyright (C) 1984, 1986, 1989, 2001, 2002, 2003, 2005, 2006 Free
+   Software Foundation, Inc.

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


@@ -15,44 +17,42 @@
 
    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 "symtab.h"
+
+#include <quotearg.h>
+

 #include "gram.h"
 #include "gram.h"

-#include "reduce.h"

 #include "reader.h"
 #include "reader.h"

+#include "reduce.h"
+#include "symtab.h"

 
 /* Comments for these variables are in gram.h.  */
 
 
 /* Comments for these variables are in gram.h.  */
 

-item_number_t *ritem = NULL;
+item_number *ritem = NULL;

 unsigned int nritems = 0;
 
 unsigned int nritems = 0;
 

-rule_t *rules = NULL;
-rule_number_t nrules = 0;
+rule *rules = NULL;
+rule_number nrules = 0;

 
 

-symbol_t **symbols = NULL;
+symbol **symbols = NULL;

 int nsyms = 0;
 int ntokens = 1;
 int nvars = 0;
 
 int nsyms = 0;
 int ntokens = 1;
 int nvars = 0;
 

-symbol_number_t *token_translations = NULL;
+symbol_number *token_translations = NULL;

 
 int max_user_token_number = 256;
 
 
 int max_user_token_number = 256;
 

-int glr_parser = 0;
-int pure_parser = 0;
-
-

 /*--------------------------------------------------------------.
 | Return true IFF the rule has a `number' smaller than NRULES.  |
 `--------------------------------------------------------------*/
 
 bool
 /*--------------------------------------------------------------.
 | Return true IFF the rule has a `number' smaller than NRULES.  |
 `--------------------------------------------------------------*/
 
 bool

-rule_useful_p (rule_t *r)
+rule_useful_p (rule *r)

 {
   return r->number < nrules;
 }
 {
   return r->number < nrules;
 }


@@ -63,9 +63,9 @@ rule_useful_p (rule_t *r)
 `-------------------------------------------------------------*/
 
 bool
 `-------------------------------------------------------------*/
 
 bool

-rule_useless_p (rule_t *r)
+rule_useless_p (rule *r)

 {
 {

-  return r->number >= nrules;
+  return !rule_useful_p (r);

 }
 
 
 }
 
 


@@ -75,9 +75,9 @@ rule_useless_p (rule_t *r)
 `--------------------------------------------------------------------*/
 
 bool
 `--------------------------------------------------------------------*/
 
 bool

-rule_never_reduced_p (rule_t *r)
+rule_never_reduced_p (rule *r)

 {
 {

-  return !r->useful && r->number < nrules;
+  return !r->useful && rule_useful_p (r);

 }
 
 
 }
 
 


@@ -88,12 +88,12 @@ rule_never_reduced_p (rule_t *r)
 `----------------------------------------------------------------*/
 
 void
 `----------------------------------------------------------------*/
 
 void

-rule_lhs_print (rule_t *rule, symbol_t *previous_lhs, FILE *out)
+rule_lhs_print (rule *r, symbol *previous_lhs, FILE *out)

 {
 {

-  fprintf (out, "  %3d ", rule->number);
-  if (previous_lhs != rule->lhs)
+  fprintf (out, "  %3d ", r->number);
+  if (previous_lhs != r->lhs)

     {
     {

-      fprintf (out, "%s:", rule->lhs->tag);
+      fprintf (out, "%s:", r->lhs->tag);

     }
   else
     {
     }
   else
     {


@@ -110,28 +110,28 @@ rule_lhs_print (rule_t *rule, symbol_t *previous_lhs, FILE *out)
 `--------------------------------------*/
 
 int
 `--------------------------------------*/
 
 int

-rule_rhs_length (rule_t *rule)
+rule_rhs_length (rule *r)

 {
   int res = 0;
 {
   int res = 0;

-  item_number_t *rhsp;
-  for (rhsp = rule->rhs; *rhsp >= 0; ++rhsp)
+  item_number *rhsp;
+  for (rhsp = r->rhs; *rhsp >= 0; ++rhsp)

     ++res;
   return res;
 }
 
 
 /*-------------------------------.
     ++res;
   return res;
 }
 
 
 /*-------------------------------.

-| Print this RULE's RHS on OUT.  |
+| Print this rule's RHS on OUT.  |

 `-------------------------------*/
 
 void
 `-------------------------------*/
 
 void

-rule_rhs_print (rule_t *rule, FILE *out)
+rule_rhs_print (rule *r, FILE *out)

 {
 {

-  if (*rule->rhs >= 0)
+  if (*r->rhs >= 0)

     {
     {

-      item_number_t *r;
-      for (r = rule->rhs; *r >= 0; r++)
-       fprintf (out, " %s", symbols[*r]->tag);
+      item_number *rp;
+      for (rp = r->rhs; *rp >= 0; rp++)
+       fprintf (out, " %s", symbols[*rp]->tag);

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


@@ -142,14 +142,14 @@ rule_rhs_print (rule_t *rule, FILE *out)
 
 
 /*-------------------------.
 
 
 /*-------------------------.

-| Print this RULE on OUT.  |
+| Print this rule on OUT.  |

 `-------------------------*/
 
 void
 `-------------------------*/
 
 void

-rule_print (rule_t *rule, FILE *out)
+rule_print (rule *r, FILE *out)

 {
 {

-  fprintf (out, "%s:", rule->lhs->tag);
-  rule_rhs_print (rule, out);
+  fprintf (out, "%s:", r->lhs->tag);
+  rule_rhs_print (r, out);

 }
 
 
 }
 
 


@@ -179,7 +179,7 @@ size_t
 ritem_longest_rhs (void)
 {
   int max = 0;
 ritem_longest_rhs (void)
 {
   int max = 0;

-  rule_number_t r;
+  rule_number r;

 
   for (r = 0; r < nrules; ++r)
     {
 
   for (r = 0; r < nrules; ++r)
     {


@@ -198,11 +198,11 @@ ritem_longest_rhs (void)
 
 void
 grammar_rules_partial_print (FILE *out, const char *title,
 
 void
 grammar_rules_partial_print (FILE *out, const char *title,

-                            rule_filter_t filter)
+                            rule_filter filter)

 {
 {

-  int r;
+  rule_number r;

   bool first = true;
   bool first = true;

-  symbol_t *previous_lhs = NULL;
+  symbol *previous_lhs = NULL;

 
   /* rule # : LHS -> RHS */
   for (r = 0; r < nrules + nuseless_productions; r++)
 
   /* rule # : LHS -> RHS */
   for (r = 0; r < nrules + nuseless_productions; r++)


@@ -249,7 +249,7 @@ grammar_dump (FILE *out, const char *title)
 
   fprintf (out, "Variables\n---------\n\n");
   {
 
   fprintf (out, "Variables\n---------\n\n");
   {

-    symbol_number_t i;
+    symbol_number i;

     fprintf (out, "Value  Sprec  Sassoc  Tag\n");
 
     for (i = ntokens; i < nsyms; i++)
     fprintf (out, "Value  Sprec  Sassoc  Tag\n");
 
     for (i = ntokens; i < nsyms; i++)


@@ -262,36 +262,36 @@ grammar_dump (FILE *out, const char *title)
 
   fprintf (out, "Rules\n-----\n\n");
   {
 
   fprintf (out, "Rules\n-----\n\n");
   {

-    rule_number_t i;
+    rule_number i;

     fprintf (out, "Num (Prec, Assoc, Useful, Ritem Range) Lhs -> Rhs (Ritem range) [Num]\n");
     for (i = 0; i < nrules + nuseless_productions; i++)
       {
     fprintf (out, "Num (Prec, Assoc, Useful, Ritem Range) Lhs -> Rhs (Ritem range) [Num]\n");
     for (i = 0; i < nrules + nuseless_productions; i++)
       {

-       rule_t *rule = &rules[i];
-       item_number_t *r = NULL;
-       unsigned int rhs_itemno = rule->rhs - ritem;
-       unsigned int rhs_count = 0;
+       rule *rule_i = &rules[i];
+       item_number *rp = NULL;
+       unsigned int rhs_itemno = rule_i->rhs - ritem;
+       unsigned int rhs_count = 0;

        /* Find the last RHS index in ritems. */
        /* Find the last RHS index in ritems. */

-       for (r = rule->rhs; *r >= 0; ++r)
+       for (rp = rule_i->rhs; *rp >= 0; ++rp)

          ++rhs_count;
        fprintf (out, "%3d (%2d, %2d, %2d, %2u-%2u)   %2d ->",
                 i,
          ++rhs_count;
        fprintf (out, "%3d (%2d, %2d, %2d, %2u-%2u)   %2d ->",
                 i,

-                rule->prec ? rule->prec->prec : 0,
-                rule->prec ? rule->prec->assoc : 0,
-                rule->useful,
+                rule_i->prec ? rule_i->prec->prec : 0,
+                rule_i->prec ? rule_i->prec->assoc : 0,
+                rule_i->useful,

                 rhs_itemno,
                 rhs_itemno + rhs_count - 1,
                 rhs_itemno,
                 rhs_itemno + rhs_count - 1,

-                rule->lhs->number);
+                rule_i->lhs->number);

        /* Dumped the RHS. */
        /* Dumped the RHS. */

-       for (r = rule->rhs; *r >= 0; r++)
-         fprintf (out, " %3d", *r);
-       fprintf (out, "  [%d]\n", item_number_as_rule_number (*r));
+       for (rp = rule_i->rhs; *rp >= 0; rp++)
+         fprintf (out, " %3d", *rp);
+       fprintf (out, "  [%d]\n", item_number_as_rule_number (*rp));

       }
   }
   fprintf (out, "\n\n");
 
   fprintf (out, "Rules interpreted\n-----------------\n\n");
   {
       }
   }
   fprintf (out, "\n\n");
 
   fprintf (out, "Rules interpreted\n-----------------\n\n");
   {

-    rule_number_t r;
+    rule_number r;

     for (r = 0; r < nrules + nuseless_productions; r++)
       {
        fprintf (out, "%-5d  ", r);
     for (r = 0; r < nrules + nuseless_productions; r++)
       {
        fprintf (out, "%-5d  ", r);


@@ -312,13 +312,12 @@ grammar_dump (FILE *out, const char *title)
 void
 grammar_rules_never_reduced_report (const char *message)
 {
 void
 grammar_rules_never_reduced_report (const char *message)
 {

-  rule_number_t r;
+  rule_number r;

   for (r = 0; r < nrules ; ++r)
     if (!rules[r].useful)
       {
        location_print (stderr, rules[r].location);
   for (r = 0; r < nrules ; ++r)
     if (!rules[r].useful)
       {
        location_print (stderr, rules[r].location);

-       fprintf (stderr, ": %s: %s: ",
-                _("warning"), message);
+       fprintf (stderr, ": %s: %s: ", _("warning"), message);

        rule_print (&rules[r], stderr);
       }
 }
        rule_print (&rules[r], stderr);
       }
 }


@@ -326,9 +325,10 @@ grammar_rules_never_reduced_report (const char *message)
 void
 grammar_free (void)
 {
 void
 grammar_free (void)
 {

-  XFREE (ritem);
+  if (ritem)
+    free (ritem - 1);

   free (rules);
   free (rules);

-  XFREE (token_translations);
+  free (token_translations);

   /* Free the symbol table data structure.  */
   symbols_free ();
   free_merger_functions ();
   /* Free the symbol table data structure.  */
   symbols_free ();
   free_merger_functions ();