* src/lalr.c (state_lookahead_tokens_count): For code readability,

[bison.git] / src / gram.h

diff --git a/src/gram.h b/src/gram.h
index e7cf33d6997c4cef872ecfd8d9f99af4c445410d..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
+   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.
@@ -17,8 +17,8 @@
 
    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.  */
 
 #ifndef GRAM_H_
 # define GRAM_H_
@@ -107,14 +107,15 @@
 # include "location.h"
 # include "symtab.h"
 
-# define ISTOKEN(s)    ((s) < ntokens)
-# define ISVAR(s)      ((s) >= ntokens)
+# define ISTOKEN(i)    ((i) < ntokens)
+# define ISVAR(i)      ((i) >= ntokens)
 
 extern int nsyms;
 extern int ntokens;
 extern int nvars;
 
 typedef int item_number;
+#define ITEM_NUMBER_MAX INT_MAX
 extern item_number *ritem;
 extern unsigned int nritems;
 
@@ -127,9 +128,9 @@ extern unsigned int nritems;
    sometimes have to perform the converse transformation.  */
 
 static inline item_number
-symbol_number_as_item_number (symbol_number s)
+symbol_number_as_item_number (symbol_number sym)
 {
-  return s;
+  return sym;
 }
 
 static inline symbol_number
@@ -138,10 +139,15 @@ item_number_as_symbol_number (item_number i)
   return i;
 }
 
-extern symbol_number start_symbol;
+static inline bool
+item_number_is_symbol_number (item_number i)
+{
+  return i >= 0;
+}
 
 /* Rule numbers.  */
-typedef short rule_number;
+typedef int rule_number;
+#define RULE_NUMBER_MAX INT_MAX
 extern rule_number nrules;
 
 static inline item_number
@@ -156,6 +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.  |
@@ -177,8 +188,8 @@ typedef struct
   /* This symbol provides both the associativity, and the precedence. */
   symbol *prec;
 
-  short dprec;
-  short merger;
+  int dprec;
+  int merger;
 
   /* This symbol was attached to the rule via %prec. */
   symbol *precsym;
@@ -233,17 +244,6 @@ extern int max_user_token_number;
 
 
 
-/* GLR_PARSER is nonzero if the input file says to use the GLR
-   (Generalized LR) parser, and to output some additional
-   information used by the GLR algorithm. */
-
-extern int glr_parser;
-
-/* PURE_PARSER is nonzero if should generate a parser that is all pure
-   and reentrant.  */
-
-extern int pure_parser;
-
 /* Dump RITEM for traces. */
 void ritem_print (FILE *out);