/* parsercallback.vala
 *
 * Copyright (C) 2008-2009 Florian Brosch, Didier Villevalois
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
 *
 * Author:
 * 	Didier 'Ptitjes Villevalois <ptitjes@free.fr>
 */


public interface Valadoc.ParserCallback {
	public abstract Object? get_rule_state ();
	public abstract void set_rule_state (Object state);

	public abstract void push_rule (Rule rule);
	public abstract void reduce ();

	public abstract bool would_parent_accept_token (Token token);
	public abstract bool would_parent_reduce_to_rule (Token token, Rule rule);

	public abstract void warning (Token? token, string message);
	public abstract void error (Token? token, string message) throws ParserError;
}