87 lines
3.0 KiB
Java
87 lines
3.0 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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*
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* Copyright (c) 2009-2012,
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*
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* Adam Fuchs <afuchs@cs.umd.edu>
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* Avik Chaudhuri <avik@cs.umd.edu>
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*
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* All rights reserved.
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*
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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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*
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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package org.scandroid.flow.types;
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import com.ibm.wala.ipa.cfg.BasicBlockInContext;
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import com.ibm.wala.ssa.ISSABasicBlock;
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import com.ibm.wala.ssa.SSAInvokeInstruction;
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/**
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*
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* A return flow represents either a flow from a method that was just invoked
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* if this points to an invoke instruction (in which case this is a source) or
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* a method return, if this points to a return instruction (in which case it is
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* a sink).
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*
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*/
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public class ReturnFlow <E extends ISSABasicBlock> extends FlowType<E> {
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public ReturnFlow(BasicBlockInContext<E> block, boolean source) {
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super(block, source);
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}
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@Override
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public String toString() {
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return "ReturnFlow( " + super.toString() + ")";
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}
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@Override
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public String descString() {
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if(isSource()) {
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SSAInvokeInstruction inv = (SSAInvokeInstruction)getBlock().getLastInstruction();
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return "ret:" + inv.getDeclaredTarget().getSignature();
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} else {
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return "ret";
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}
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}
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@Override
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public <R> R visit(FlowTypeVisitor<E, R> v) {
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return v.visitReturnFlow(this);
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}
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}
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