79 lines
2.2 KiB
Java
79 lines
2.2 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;
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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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import com.ibm.wala.util.debug.Assertions;
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/**
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* This is a context which is customized for the {@link InstanceKey} of the receiver.
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*/
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public class ReceiverInstanceContext implements Context {
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private final InstanceKey ik;
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/**
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* @param I the instance key that represents the receiver
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*/
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public ReceiverInstanceContext(InstanceKey I) {
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if (I == null) {
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throw new IllegalArgumentException("null I");
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}
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this.ik = I;
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}
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public ContextItem get(ContextKey name) {
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if (name == ContextKey.RECEIVER)
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return ik;
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else if (name == ContextKey.PARAMETERS[0])
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return new FilteredPointerKey.SingleInstanceFilter(ik);
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else {
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return null;
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}
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}
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@Override
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public String toString() {
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return "ReceiverInstanceContext<" + ik + ">";
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}
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@Override
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public int hashCode() {
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final int prime = 31;
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int result = 1;
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result = prime * result + ((ik == null) ? 0 : ik.hashCode());
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return result;
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}
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@Override
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public boolean equals(Object obj) {
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if (this == obj)
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return true;
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if (obj == null)
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return false;
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if (getClass() != obj.getClass())
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return false;
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final ReceiverInstanceContext other = (ReceiverInstanceContext) obj;
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if (ik == null) {
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if (other.ik != null)
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return false;
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} else if (!ik.equals(other.ik))
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return false;
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return true;
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}
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public InstanceKey getReceiver() {
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return ik;
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}
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}
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