64 lines
2.3 KiB
Java
64 lines
2.3 KiB
Java
/******************************************************************************
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* Copyright (c) 2002 - 2006 IBM Corporation.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* IBM Corporation - initial API and implementation
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*****************************************************************************/
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package com.ibm.wala.cast.ipa.callgraph;
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import java.util.Map;
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import com.ibm.wala.classLoader.CallSiteReference;
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import com.ibm.wala.classLoader.IMethod;
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import com.ibm.wala.ipa.callgraph.CGNode;
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import com.ibm.wala.ipa.callgraph.Context;
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import com.ibm.wala.ipa.callgraph.ContextSelector;
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import com.ibm.wala.ipa.callgraph.propagation.InstanceKey;
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import com.ibm.wala.util.intset.IntSet;
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import com.ibm.wala.util.strings.Atom;
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/**
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* A ContextSelector implementation adapted to work for analysi across
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* multiple languages. This context selector delegates to one of several
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* child selectors based on the language of the code body for which a
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* context is being selected.
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*
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* This provides a convenient way to integrate multiple, lanuage-specific
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* specialized context policies---such as the ones used for clone() in
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* Java and runtime primitives in JavaScript.
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*
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* @author Julian Dolby (dolby@us.ibm.com)
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*/
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public class CrossLanguageContextSelector implements ContextSelector {
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private final Map languageSelectors;
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public CrossLanguageContextSelector(Map languageSelectors) {
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this.languageSelectors = languageSelectors;
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}
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private static Atom getLanguage(CallSiteReference site) {
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return site
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.getDeclaredTarget()
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.getDeclaringClass()
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.getClassLoader()
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.getLanguage();
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}
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private ContextSelector getSelector(CallSiteReference site) {
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return (ContextSelector)languageSelectors.get(getLanguage(site));
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}
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public Context getCalleeTarget(CGNode caller, CallSiteReference site, IMethod callee, InstanceKey[] receiver) {
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return getSelector(site).getCalleeTarget(caller, site, callee, receiver);
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}
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public IntSet getRelevantParameters(CGNode caller, CallSiteReference site) {
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return getSelector(site).getRelevantParameters(caller, site);
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}
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}
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