/*******************************************************************************
* Copyright (c) 2002 - 2006 IBM Corporation.
* 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 com.ibm.wala.util.graph.impl;
import java.util.Iterator;
import com.ibm.wala.util.graph.EdgeManager;
/**
* An edge manager that reverses the edges in a graph
*/
public class InvertingEdgeManager<T> implements EdgeManager<T> {
private final EdgeManager<T> original;
public InvertingEdgeManager(EdgeManager<T> original) {
if (original == null) {
throw new IllegalArgumentException("original is null");
}
this.original = original;
}
@Override
public Iterator<T> getPredNodes(T N) throws IllegalArgumentException {
return original.getSuccNodes(N);
}
@Override
public int getPredNodeCount(T N) throws IllegalArgumentException{
return original.getSuccNodeCount(N);
}
@Override
public Iterator<T> getSuccNodes(T N) throws IllegalArgumentException{
return original.getPredNodes(N);
}
@Override
public int getSuccNodeCount(T N) throws IllegalArgumentException{
return original.getPredNodeCount(N);
}
@Override
public void addEdge(T src, T dst)throws IllegalArgumentException {
original.addEdge(dst, src);
}
@Override
public void removeEdge(T src, T dst) throws IllegalArgumentException{
original.removeEdge(dst, src);
}
@Override
public boolean hasEdge(T src, T dst) {
return original.hasEdge(dst, src);
}
@Override
public void removeAllIncidentEdges(T node) throws IllegalArgumentException {
original.removeAllIncidentEdges(node);
}
@Override
public void removeIncomingEdges(T node) throws IllegalArgumentException{
original.removeOutgoingEdges(node);
}
@Override
public void removeOutgoingEdges(T node)throws IllegalArgumentException {
original.removeIncomingEdges(node);
}
}