2007-01-30 Paolo Bonzini <bonzini@gnu.org>

[bison.git] / src / gram.h

diff --git a/src/gram.h b/src/gram.h
index a5dfc1e93ba4fa40f5786650d6f41943f300be3c..3b742d565e8be947365dccc14b6561b140bd5c3b 100644 (file)
--- a/src/gram.h
+++ b/src/gram.h
@@ -1,6 +1,6 @@
 /* Data definitions for internal representation of Bison's input.
 
-   Copyright (C) 1984, 1986, 1989, 1992, 2001, 2002, 2003, 2004
+   Copyright (C) 1984, 1986, 1989, 1992, 2001, 2002, 2003, 2004, 2005, 2006
    Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
@@ -115,6 +115,7 @@ extern int ntokens;
 extern int nvars;
 
 typedef int item_number;
+#define ITEM_NUMBER_MAX INT_MAX
 extern item_number *ritem;
 extern unsigned int nritems;
 
@@ -138,8 +139,15 @@ item_number_as_symbol_number (item_number i)
   return i;
 }
 
+static inline bool
+item_number_is_symbol_number (item_number i)
+{
+  return i >= 0;
+}
+
 /* Rule numbers.  */
 typedef int rule_number;
+#define RULE_NUMBER_MAX INT_MAX
 extern rule_number nrules;
 
 static inline item_number
@@ -154,6 +162,11 @@ item_number_as_rule_number (item_number i)
   return -1 - i;
 }
 
+static inline bool
+item_number_is_rule_number (item_number i)
+{
+  return i < 0;
+}
 
 /*--------.
 | Rules.  |