/* Definitions for symtab.c and callers, part of bison,
- Copyright (C) 1984, 1989 Free Software Foundation, Inc.
+ Copyright 1984, 1989, 1992, 2000 Free Software Foundation, Inc.
-This file is part of Bison, the GNU Compiler Compiler.
+ This file is part of Bison, the GNU Compiler Compiler.
-Bison is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+ Bison is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
-Bison is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ Bison is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-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, 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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. */
+#ifndef SYMTAB_H_
+# define SYMTAB_H_
+# include "gram.h"
#define TABSIZE 1009
-
/* symbol classes */
-#define SUNKNOWN 0
-#define STOKEN 1
-#define SNTERM 2
+typedef enum
+{
+ unknown_sym,
+ token_sym, /* terminal symbol */
+ nterm_sym /* non-terminal */
+} symbol_class;
+
+#define SALIAS -9991 /* for symbol generated with an alias */
+typedef struct bucket
+{
+ /* Needed for the hash table. */
+ struct bucket *link;
+ struct bucket *next;
-typedef
- struct bucket
- {
- struct bucket *link;
- struct bucket *next;
- char *tag;
- char *type_name;
- short value;
- short prec;
- short assoc;
- short user_token_number;
- char class;
- }
- bucket;
+ /* The key, name of the symbol. */
+ char *tag;
+ /* Its type. */
+ char *type_name;
+ short value;
+ short prec;
+ associativity assoc;
+ short user_token_number;
+ /* Points to the other in the identifier-symbol pair for an
+ alias. Special value SALIAS in the identifier half of the
+ identifier-symbol pair for an alias. */
+ struct bucket *alias;
+ symbol_class class;
+}
+bucket;
-extern bucket **symtab;
extern bucket *firstsymbol;
-extern bucket *getsym();
+bucket *getsym PARAMS ((const char *));
+
+void tabinit PARAMS ((void));
+void free_symtab PARAMS ((void));
+
+#endif /* !SYMTAB_H_ */