* data/lalr1.cc (Parser::stack_print_, YY_STACK_PRINT): New.

[bison.git] / src / nullable.c

diff --git a/src/nullable.c b/src/nullable.c
index beedf2b140f06281beb326df5b400cc70f684367..9357535c9bdef723d94e15dd373d572c46cbc4d2 100644 (file)
--- a/src/nullable.c
+++ b/src/nullable.c
@@ -1,6 +1,7 @@
 /* Calculate which nonterminals can expand into the null string for Bison.
 
-   Copyright (C) 1984, 1989, 2000, 2001, 2002 Free Software Foundation, Inc.
+   Copyright (C) 1984, 1989, 2000, 2001, 2002, 2003 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -81,21 +82,21 @@ nullable_compute (void)
        if (rules_ruleno->rhs[0] >= 0)
          {
            /* This rule has a non empty RHS. */
-           item_number *r = NULL;
-           int any_tokens = 0;
-           for (r = rules_ruleno->rhs; *r >= 0; ++r)
-             if (ISTOKEN (*r))
-               any_tokens = 1;
+           item_number *rp = NULL;
+           bool any_tokens = false;
+           for (rp = rules_ruleno->rhs; *rp >= 0; ++rp)
+             if (ISTOKEN (*rp))
+               any_tokens = true;
 
            /* This rule has only nonterminals: schedule it for the second
               pass.  */
            if (!any_tokens)
-             for (r = rules_ruleno->rhs; *r >= 0; ++r)
+             for (rp = rules_ruleno->rhs; *rp >= 0; ++rp)
                {
                  rcount[ruleno]++;
-                 p->next = rsets[*r - ntokens];
+                 p->next = rsets[*rp - ntokens];
                  p->value = rules_ruleno;
-                 rsets[*r - ntokens] = p;
+                 rsets[*rp - ntokens] = p;
                  p++;
                }
          }
@@ -107,7 +108,7 @@ nullable_compute (void)
            if (rules_ruleno->useful
                && ! nullable[rules_ruleno->lhs->number - ntokens])
              {
-               nullable[rules_ruleno->lhs->number - ntokens] = 1;
+               nullable[rules_ruleno->lhs->number - ntokens] = true;
                *s2++ = rules_ruleno->lhs->number;
              }
          }
@@ -120,7 +121,7 @@ nullable_compute (void)
        if (--rcount[r->number] == 0)
          if (r->useful && ! nullable[r->lhs->number - ntokens])
            {
-             nullable[r->lhs->number - ntokens] = 1;
+             nullable[r->lhs->number - ntokens] = true;
              *s2++ = r->lhs->number;
            }
       }