78 lines
2.4 KiB
Java
78 lines
2.4 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.ipa.callgraph.propagation.cfa;
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import com.ibm.wala.classLoader.CallSiteReference;
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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.ContextItem;
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import com.ibm.wala.ipa.callgraph.ContextKey;
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/**
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* This is a context which is defined by a pair consisting of <caller node, base context>.
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*
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* The base context is typically some special case; e.g., a JavaTypeContext used for reflection.
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*/
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public class CallerSiteContextPair extends CallerSiteContext {
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private final Context baseContext;
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/**
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* @param caller the node which defines this context.
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*/
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public CallerSiteContextPair(CGNode caller, CallSiteReference callSite, Context baseContext) {
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super(caller, callSite);
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if (caller == null) {
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throw new IllegalArgumentException("null caller");
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}
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this.baseContext = baseContext;
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// avoid recursive contexts for now.
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assert !(baseContext instanceof CallerContextPair);
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}
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@Override
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public ContextItem get(ContextKey name) {
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if (name == null) {
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throw new IllegalArgumentException("name is null");
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}
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if (name.equals(ContextKey.CALLER) || name.equals(ContextKey.CALLSITE)) {
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return super.get(name);
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} else {
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return baseContext.get(name);
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}
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}
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@Override
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public boolean equals(Object obj) {
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if (obj == null) {
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return false;
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}
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if (getClass().equals(obj.getClass())) {
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CallerSiteContextPair other = (CallerSiteContextPair) obj;
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return getCaller().equals(other.getCaller()) && getCallSite().equals(other.getCallSite())
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&& baseContext.equals(other.baseContext);
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} else {
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return false;
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}
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}
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@Override
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public int hashCode() {
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return super.hashCode() + baseContext.hashCode();
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}
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@Override
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public String toString() {
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return super.toString() + ",Base:" + baseContext;
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}
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}
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