135 lines
4.5 KiB
Java
135 lines
4.5 KiB
Java
/*
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* 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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* This file is a derivative of code released under the terms listed below.
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*
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*/
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/*
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* Copyright (c) 2013,
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* Tobias Blaschke <code@tobiasblaschke.de>
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* All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The names of the contributors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.ibm.wala.dalvik.ipa.callgraph.propagation.cfa;
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import com.ibm.wala.dalvik.util.AndroidTypes;
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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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* Fetches an android/content/Context.
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*
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* @author Tobias Blaschke <code@tobiasblaschke.de>
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* @since 2013-10-14
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*/
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public class AndroidContext implements Context {
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/**
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* Key into the Context that represents the AndroidContext.
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*/
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public static final ContextKey ANDROID_CONTEXT_KEY = new ContextKey() {};
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private final AndroidTypes.AndroidContextType aCtxT;
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private final Context parent;
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public AndroidContext(Context parent, AndroidTypes.AndroidContextType aCtxT) {
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this.parent = parent;
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this.aCtxT = aCtxT;
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}
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public AndroidTypes.AndroidContextType getContextType() {
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return this.aCtxT;
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}
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/**
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* Looks up a ContextKey in the Context.
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*
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* @return an Intent or parent-managed object.
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* @throws IllegalArgumentException if the name is null.
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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(ANDROID_CONTEXT_KEY)) {
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return null; // TODO
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} else if(this.parent != null) {
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return this.parent.get(name);
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} else {
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return null;
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}
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}
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/**
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* Special equality: Object may be equal to an object without associated Intent.
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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 (obj instanceof AndroidContext) {
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AndroidContext other = (AndroidContext) obj;
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if (this.aCtxT.equals(other.aCtxT)) {
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if (this.parent != null) {
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return this.parent.equals(other.parent);
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} else {
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return other.parent == null;
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}
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} else {
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return false;
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}
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} else {
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if (this.parent != null) {
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// TODO: do we really want this?
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return this.parent.equals(obj);
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} else {
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return false;
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}
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}
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}
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@Override
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public int hashCode() {
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// TODO: do we want to "clash" with the parent here?
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return 71891 * this.aCtxT.hashCode();
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}
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@Override
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public String toString() {
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if (this.parent == null) {
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return "AndroidContext: " + this.aCtxT;
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} else {
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return "AndroidContext: " + this.aCtxT + ", parent: " + this.parent;
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}
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}
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}
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