Document how `%define "var" "value"' is not M4-friendly.

[bison.git] / src / reader.h

/* Input parser for Bison

   Copyright (C) 2000, 2001, 2002, 2003, 2005, 2006, 2007 Free Software
   Foundation, Inc.

   This file is part of Bison, the GNU Compiler Compiler.

   This program 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 3 of the License, or
   (at your option) any later version.

   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */

#ifndef READER_H_
# define READER_H_

# include "location.h"
# include "symlist.h"

# include "parse-gram.h"

typedef struct merger_list
{
  struct merger_list* next;
  uniqstr name;
  uniqstr type;
  location type_declaration_location;
} merger_list;

/* From the parser.  */
extern int gram_debug;
int gram_parse (void);
char const *token_name (int type);


/* From reader.c. */
void grammar_start_symbol_set (symbol *sym, location loc);
void grammar_current_rule_begin (symbol *lhs, location loc);
void grammar_current_rule_end (location loc);
void grammar_midrule_action (void);
void grammar_current_rule_prec_set (symbol *precsym, location loc);
void grammar_current_rule_dprec_set (int dprec, location loc);
void grammar_current_rule_merge_set (uniqstr name, location loc);
void grammar_current_rule_symbol_append (symbol *sym, location loc);
void grammar_current_rule_action_append (const char *action, location loc);
void reader (void);
void free_merger_functions (void);

extern merger_list *merge_functions;

/* Was %union seen?  */
extern bool union_seen;

/* Was a tag seen?  */
extern bool tag_seen;

/* Should rules have a default precedence?  */
extern bool default_prec;

#endif /* !READER_H_ */