/*******************************************************************************
* Copyright (c) 2004, 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 - Initial API and implementation
* Markus Schorn (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IASTProblem;
/**
* @author jcamelon
*/
public class BacktrackException extends Exception {
private IASTProblem problem;
private IASTNode nodeBeforeProblem; // a node has been created in spite of the problem.
private int offset, length;
public BacktrackException() {
}
public BacktrackException(BacktrackException e) {
problem= e.problem;
nodeBeforeProblem= e.nodeBeforeProblem;
offset= e.offset;
length= e.length;
}
public void initialize(IASTProblem p) {
reset();
problem = p;
}
public void initialize(IASTProblem p, IASTNode node) {
reset();
problem = p;
nodeBeforeProblem= node;
}
/**
*
*/
private void reset() {
nodeBeforeProblem= null;
problem = null;
offset = 0;
length = 0;
}
/**
* @return Returns the problem.
*/
public final IASTProblem getProblem() {
return problem;
}
public final IASTNode getNodeBeforeProblem() {
return nodeBeforeProblem;
}
public void initialize(int start, int l ) {
reset();
offset = start;
length = l;
}
/**
* @return Returns the length.
*/
public int getLength() {
return length;
}
/**
* @return Returns the offset.
*/
public int getOffset() {
return offset;
}
}