67 lines
2.3 KiB
Java
67 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.IClass;
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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.MethodTargetSelector;
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import com.ibm.wala.types.MethodReference;
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import com.ibm.wala.util.strings.Atom;
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/**
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* A MethodTargetSelector implementation that supports multiple languages.
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* It works by delegating to a language-specific child selector based on
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* the language associated with the MethodReference for which a target is
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* being chosen.
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*
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* This provides a simple way to combine language-specific target
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* selection policies---such as those used for constructor calls in
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* JavaScript and for bean methods in J2EE.
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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 CrossLanguageMethodTargetSelector
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implements MethodTargetSelector
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{
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private final Map<Atom,MethodTargetSelector> languageSelectors;
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public CrossLanguageMethodTargetSelector(Map<Atom, MethodTargetSelector> languageSelectors) {
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this.languageSelectors = languageSelectors;
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}
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private static Atom getLanguage(MethodReference target) {
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return target
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.getDeclaringClass()
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.getClassLoader()
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.getLanguage();
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}
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private static Atom getLanguage(CallSiteReference site) {
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return getLanguage(site.getDeclaredTarget());
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}
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private MethodTargetSelector getSelector(CallSiteReference site) {
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return languageSelectors.get(getLanguage(site));
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}
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@Override
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public IMethod getCalleeTarget(CGNode caller, CallSiteReference site, IClass receiver) {
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assert getSelector(site) != null: "no selector for " + getLanguage(site) + " method " + site;
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return getSelector(site).getCalleeTarget(caller, site, receiver);
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}
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}
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