/*******************************************************************************
* Copyright (c) 2007 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.ipa.cfg;
import com.ibm.wala.cfg.ControlFlowGraph;
import com.ibm.wala.cfg.IBasicBlock;
/**
* A view of a CFG that ignores exceptional edges
*/
public class ExceptionPrunedCFG {
private static class ExceptionEdgePruner<I, T extends IBasicBlock<I>> implements EdgeFilter<T>{
private final ControlFlowGraph<I, T> cfg;
ExceptionEdgePruner(ControlFlowGraph<I, T> cfg) {
this.cfg = cfg;
}
@Override
public boolean hasNormalEdge(T src, T dst) {
return cfg.getNormalSuccessors(src).contains(dst);
}
@Override
public boolean hasExceptionalEdge(T src, T dst) {
return false;
}
};
public static <I, T extends IBasicBlock<I>> PrunedCFG<I, T> make(ControlFlowGraph<I, T> cfg) {
return PrunedCFG.make(cfg, new ExceptionEdgePruner<I, T>(cfg));
}
}