X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/3f5d1b2c67651a9d620946de421f2e51600b885e..baa423bd59767a687ad742adc66a5b7428a41dee:/src/gram.c

diff --git a/src/gram.c b/src/gram.c
index 5730e596..3eb6c067 100644
--- a/src/gram.c
+++ b/src/gram.c
@@ -1,6 +1,6 @@
 /* Allocate input grammar variables for Bison.
 
-   Copyright (C) 1984, 1986, 1989, 2001-2003, 2005-2012 Free Software
+   Copyright (C) 1984, 1986, 1989, 2001-2003, 2005-2015 Free Software
    Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
@@ -47,50 +47,43 @@ symbol_number *token_translations = NULL;
 int max_user_token_number = 256;
 
 bool
-rule_useful_in_grammar_p (rule *r)
+rule_useful_in_grammar_p (rule const *r)
 {
   return r->number < nrules;
 }
 
 bool
-rule_useless_in_grammar_p (rule *r)
+rule_useless_in_grammar_p (rule const *r)
 {
   return !rule_useful_in_grammar_p (r);
 }
 
 bool
-rule_useless_in_parser_p (rule *r)
+rule_useless_in_parser_p (rule const *r)
 {
   return !r->useful && rule_useful_in_grammar_p (r);
 }
 
 void
-rule_lhs_print (rule *r, symbol *previous_lhs, FILE *out)
+rule_lhs_print (rule const *r, symbol const *previous_lhs, FILE *out)
 {
   fprintf (out, "  %3d ", r->number);
   if (previous_lhs != r->lhs)
-    {
-      fprintf (out, "%s:", r->lhs->tag);
-    }
+    fprintf (out, "%s:", r->lhs->tag);
   else
-    {
-      int n;
-      for (n = strlen (previous_lhs->tag); n > 0; --n)
-	fputc (' ', out);
-      fputc ('|', out);
-    }
+    fprintf (out, "%*s|", (int) strlen (previous_lhs->tag), "");
 }
 
 void
-rule_lhs_print_xml (rule *r, FILE *out, int level)
+rule_lhs_print_xml (rule const *r, FILE *out, int level)
 {
   xml_printf (out, level, "<lhs>%s</lhs>", r->lhs->tag);
 }
 
-int
-rule_rhs_length (rule *r)
+size_t
+rule_rhs_length (rule const *r)
 {
-  int res = 0;
+  size_t res = 0;
   item_number *rhsp;
   for (rhsp = r->rhs; *rhsp >= 0; ++rhsp)
     ++res;
@@ -98,31 +91,28 @@ rule_rhs_length (rule *r)
 }
 
 void
-rule_rhs_print (rule *r, FILE *out)
+rule_rhs_print (rule const *r, FILE *out)
 {
-  if (*r->rhs >= 0)
+  if (0 <= *r->rhs)
     {
       item_number *rp;
       for (rp = r->rhs; *rp >= 0; rp++)
-	fprintf (out, " %s", symbols[*rp]->tag);
-      fputc ('\n', out);
+        fprintf (out, " %s", symbols[*rp]->tag);
     }
   else
-    {
-      fprintf (out, " /* %s */\n", _("empty"));
-    }
+    fputs (" %empty", out);
 }
 
 static void
-rule_rhs_print_xml (rule *r, FILE *out, int level)
+rule_rhs_print_xml (rule const *r, FILE *out, int level)
 {
   if (*r->rhs >= 0)
     {
       item_number *rp;
       xml_puts (out, level, "<rhs>");
       for (rp = r->rhs; *rp >= 0; rp++)
-	xml_printf (out, level + 1, "<symbol>%s</symbol>",
-		    xml_escape (symbols[*rp]->tag));
+        xml_printf (out, level + 1, "<symbol>%s</symbol>",
+                    xml_escape (symbols[*rp]->tag));
       xml_puts (out, level, "</rhs>");
     }
   else
@@ -133,13 +123,6 @@ rule_rhs_print_xml (rule *r, FILE *out, int level)
     }
 }
 
-void
-rule_print (rule *r, FILE *out)
-{
-  fprintf (out, "%s:", r->lhs->tag);
-  rule_rhs_print (r, out);
-}
-
 void
 ritem_print (FILE *out)
 {
@@ -163,7 +146,7 @@ ritem_longest_rhs (void)
     {
       int length = rule_rhs_length (&rules[r]);
       if (length > max)
-	max = length;
+        max = length;
     }
 
   return max;
@@ -171,7 +154,7 @@ ritem_longest_rhs (void)
 
 void
 grammar_rules_partial_print (FILE *out, const char *title,
-			     rule_filter filter)
+                             rule_filter filter)
 {
   rule_number r;
   bool first = true;
@@ -181,14 +164,15 @@ grammar_rules_partial_print (FILE *out, const char *title,
   for (r = 0; r < nrules + nuseless_productions; r++)
     {
       if (filter && !filter (&rules[r]))
-	continue;
+        continue;
       if (first)
-	fprintf (out, "%s\n\n", title);
+        fprintf (out, "%s\n\n", title);
       else if (previous_lhs && previous_lhs != rules[r].lhs)
-	fputc ('\n', out);
+        fputc ('\n', out);
       first = false;
       rule_lhs_print (&rules[r], previous_lhs, out);
       rule_rhs_print (&rules[r], out);
+      fprintf (out, "\n");
       previous_lhs = rules[r].lhs;
     }
   if (!first)
@@ -210,7 +194,7 @@ grammar_rules_print_xml (FILE *out, int level)
   for (r = 0; r < nrules + nuseless_productions; r++)
     {
       if (first)
-	xml_puts (out, level + 1, "<rules>");
+        xml_puts (out, level + 1, "<rules>");
       first = false;
       {
         char const *usefulness;
@@ -243,8 +227,8 @@ grammar_dump (FILE *out, const char *title)
 {
   fprintf (out, "%s\n\n", title);
   fprintf (out,
-	   "ntokens = %d, nvars = %d, nsyms = %d, nrules = %d, nritems = %d\n\n",
-	   ntokens, nvars, nsyms, nrules, nritems);
+           "ntokens = %d, nvars = %d, nsyms = %d, nrules = %d, nritems = %d\n\n",
+           ntokens, nvars, nsyms, nrules, nritems);
 
 
   fprintf (out, "Variables\n---------\n\n");
@@ -254,37 +238,39 @@ grammar_dump (FILE *out, const char *title)
 
     for (i = ntokens; i < nsyms; i++)
       fprintf (out, "%5d  %5d   %5d  %s\n",
-	       i,
-	       symbols[i]->prec, symbols[i]->assoc,
-	       symbols[i]->tag);
+               i,
+               symbols[i]->prec, symbols[i]->assoc,
+               symbols[i]->tag);
     fprintf (out, "\n\n");
   }
 
   fprintf (out, "Rules\n-----\n\n");
   {
     rule_number i;
-    fprintf (out, "Num (Prec, Assoc, Useful, Ritem Range) Lhs -> Rhs (Ritem range) [Num]\n");
+    fprintf (out,
+             "Num (Prec, Assoc, Useful, Ritem Range) Lhs"
+             " -> Rhs (Ritem range) [Num]\n");
     for (i = 0; i < nrules + nuseless_productions; i++)
       {
-	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. */
-	for (rp = rule_i->rhs; *rp >= 0; ++rp)
-	  ++rhs_count;
-	fprintf (out, "%3d (%2d, %2d, %2d, %2u-%2u)   %2d ->",
-		 i,
-		 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,
-		 rule_i->lhs->number);
-	/* Dumped the RHS. */
-	for (rp = rule_i->rhs; *rp >= 0; rp++)
-	  fprintf (out, " %3d", *rp);
-	fprintf (out, "  [%d]\n", item_number_as_rule_number (*rp));
+        rule const *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. */
+        for (rp = rule_i->rhs; *rp >= 0; ++rp)
+          ++rhs_count;
+        fprintf (out, "%3d (%2d, %2d, %2d, %2u-%2u)   %2d ->",
+                 i,
+                 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,
+                 rule_i->lhs->number);
+        /* Dumped the RHS. */
+        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");
@@ -294,8 +280,9 @@ grammar_dump (FILE *out, const char *title)
     rule_number r;
     for (r = 0; r < nrules + nuseless_productions; r++)
       {
-	fprintf (out, "%-5d  ", r);
-	rule_print (&rules[r], out);
+        fprintf (out, "%-5d  %s:", r, rules[r].lhs->tag);
+        rule_rhs_print (&rules[r], out);
+        fprintf (out, "\n");
       }
   }
   fprintf (out, "\n\n");
@@ -307,19 +294,7 @@ grammar_rules_useless_report (const char *message)
   rule_number r;
   for (r = 0; r < nrules ; ++r)
     if (!rules[r].useful)
-      {
-        if (feature_flag & feature_caret)
-          warn_at (rules[r].location, "%s", message);
-        else
-          {
-            warn_at (rules[r].location, "%s: ", message);
-            if (warnings_flag & warnings_other)
-              {
-                rule_print (&rules[r], stderr);
-                fflush (stderr);
-              }
-          }
-      }
+      complain (&rules[r].location, Wother, "%s", message);
 }
 
 void