/*******************************************************************************
* Copyright (c) 2008 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*********************************************************************************/
package org.eclipse.cdt.core.dom.lrparser.lpgextensions;
/**
* Provides trial, undo, and final actions for the
* TrialUndoBacktrackingParser.
*/
public interface ITrialUndoActionProvider<RULE_DATA> {
/**
* Invokes the trial action that corresponds to the given rule number.
*/
boolean trialAction(int ruleNumber);
/**
* Invokes the undo action that corresponds to the given rule number.
*/
void undoAction(int ruleNumber);
/**
* Invokes the final action that corresponds to the given rule number.
*/
void finalAction(int ruleNumber);
/**
* Sets the given Rule as the active rule for this provider.
*/
void setActiveRule(Rule<RULE_DATA> rule);
/**
* Returns the active rule for this provider.
*/
Rule<RULE_DATA> getActiveRule();
}