51 lines
1.7 KiB
Java
51 lines
1.7 KiB
Java
/*******************************************************************************
|
|
* 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.cfg.exc.inter;
|
|
|
|
import com.ibm.wala.cfg.exc.intra.MethodState;
|
|
import com.ibm.wala.ssa.SSAAbstractInvokeInstruction;
|
|
|
|
/**
|
|
* A delegating MethodState for the interprocedural analysis.
|
|
*
|
|
* This class combines two MethodState objects. A MethodState decides if a given method call may throw an exception.
|
|
* If the primary MethodState thinks that the call may throw an exception, the fallback MethodState is asked.
|
|
*
|
|
* @author Juergen Graf <graf@kit.edu>
|
|
*
|
|
*/
|
|
class DelegatingMethodState extends MethodState {
|
|
|
|
private final MethodState primary;
|
|
private final MethodState fallback;
|
|
|
|
DelegatingMethodState(final MethodState primary, final MethodState fallback) {
|
|
if (primary == null) {
|
|
throw new IllegalArgumentException("primary method state is null.");
|
|
} else if (fallback == null) {
|
|
throw new IllegalArgumentException("fallback method state is null.");
|
|
}
|
|
|
|
this.primary = primary;
|
|
this.fallback = fallback;
|
|
}
|
|
|
|
@Override
|
|
public boolean throwsException(final SSAAbstractInvokeInstruction node) {
|
|
if (primary.throwsException(node)) {
|
|
return fallback.throwsException(node);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
}
|