200 lines
5.8 KiB
Java
200 lines
5.8 KiB
Java
/*******************************************************************************
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* Copyright (c) 2013 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.modref;
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import java.util.Collection;
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import com.ibm.wala.cast.ipa.callgraph.AstHeapModel;
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import com.ibm.wala.cast.ir.ssa.AstAssertInstruction;
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import com.ibm.wala.cast.ir.ssa.AstEchoInstruction;
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import com.ibm.wala.cast.ir.ssa.AstGlobalRead;
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import com.ibm.wala.cast.ir.ssa.AstGlobalWrite;
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import com.ibm.wala.cast.ir.ssa.AstInstructionVisitor;
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import com.ibm.wala.cast.ir.ssa.AstIsDefinedInstruction;
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import com.ibm.wala.cast.ir.ssa.AstLexicalRead;
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import com.ibm.wala.cast.ir.ssa.AstLexicalWrite;
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import com.ibm.wala.cast.ir.ssa.AstPropertyRead;
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import com.ibm.wala.cast.ir.ssa.AstPropertyWrite;
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import com.ibm.wala.cast.ir.ssa.EachElementGetInstruction;
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import com.ibm.wala.cast.ir.ssa.EachElementHasNextInstruction;
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import com.ibm.wala.ipa.callgraph.CGNode;
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import com.ibm.wala.ipa.callgraph.propagation.InstanceKey;
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import com.ibm.wala.ipa.callgraph.propagation.PointerAnalysis;
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import com.ibm.wala.ipa.callgraph.propagation.PointerKey;
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import com.ibm.wala.ipa.modref.ExtendedHeapModel;
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import com.ibm.wala.ipa.modref.ModRef;
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import com.ibm.wala.util.collections.Iterator2Iterable;
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public class AstModRef<T extends InstanceKey> extends ModRef<T> {
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@Override
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public ExtendedHeapModel makeHeapModel(PointerAnalysis<T> pa) {
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return (AstHeapModel)pa.getHeapModel();
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}
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protected static class AstRefVisitor<T extends InstanceKey> extends RefVisitor<T, AstHeapModel> implements AstInstructionVisitor {
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protected AstRefVisitor(CGNode n, Collection<PointerKey> result, PointerAnalysis<T> pa, AstHeapModel h) {
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super(n, result, pa, h);
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}
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@Override
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public void visitPropertyRead(AstPropertyRead instruction) {
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PointerKey obj = h.getPointerKeyForLocal(n, instruction.getObjectRef());
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PointerKey prop = h.getPointerKeyForLocal(n, instruction.getMemberRef());
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for(InstanceKey o : pa.getPointsToSet(obj)) {
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for(InstanceKey p : pa.getPointsToSet(prop)) {
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for(PointerKey x : Iterator2Iterable.make(h.getPointerKeysForReflectedFieldRead(o, p))) {
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assert x != null : instruction;
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result.add(x);
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}
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}
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}
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}
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@Override
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public void visitPropertyWrite(AstPropertyWrite instruction) {
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// do nothing
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}
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@Override
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public void visitAstLexicalRead(AstLexicalRead instruction) {
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}
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@Override
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public void visitAstLexicalWrite(AstLexicalWrite instruction) {
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}
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@Override
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public void visitAstGlobalRead(AstGlobalRead instruction) {
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}
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@Override
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public void visitAstGlobalWrite(AstGlobalWrite instruction) {
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}
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@Override
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public void visitAssert(AstAssertInstruction instruction) {
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}
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@Override
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public void visitEachElementGet(EachElementGetInstruction inst) {
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}
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@Override
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public void visitEachElementHasNext(EachElementHasNextInstruction inst) {
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}
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@Override
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public void visitIsDefined(AstIsDefinedInstruction inst) {
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}
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@Override
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public void visitEcho(AstEchoInstruction inst) {
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}
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}
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@Override
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protected RefVisitor<T, ? extends ExtendedHeapModel> makeRefVisitor(CGNode n, Collection<PointerKey> result, PointerAnalysis<T> pa, ExtendedHeapModel h) {
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return new AstRefVisitor<>(n, result, pa, (AstHeapModel)h);
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}
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protected static class AstModVisitor<T extends InstanceKey>
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extends ModVisitor<T, AstHeapModel>
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implements AstInstructionVisitor
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{
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protected AstModVisitor(CGNode n, Collection<PointerKey> result, AstHeapModel h, PointerAnalysis<T> pa) {
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super(n, result, h, pa, true);
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}
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@Override
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public void visitAstLexicalRead(AstLexicalRead instruction) {
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}
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@Override
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public void visitAstLexicalWrite(AstLexicalWrite instruction) {
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}
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@Override
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public void visitAstGlobalRead(AstGlobalRead instruction) {
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}
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@Override
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public void visitAstGlobalWrite(AstGlobalWrite instruction) {
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}
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@Override
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public void visitAssert(AstAssertInstruction instruction) {
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}
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@Override
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public void visitEachElementGet(EachElementGetInstruction inst) {
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}
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@Override
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public void visitEachElementHasNext(EachElementHasNextInstruction inst) {
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}
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@Override
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public void visitIsDefined(AstIsDefinedInstruction inst) {
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}
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@Override
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public void visitEcho(AstEchoInstruction inst) {
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}
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@Override
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public void visitPropertyRead(AstPropertyRead instruction) {
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// do nothing
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}
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@Override
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public void visitPropertyWrite(AstPropertyWrite instruction) {
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PointerKey obj = h.getPointerKeyForLocal(n, instruction.getObjectRef());
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PointerKey prop = h.getPointerKeyForLocal(n, instruction.getMemberRef());
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for(T o : pa.getPointsToSet(obj)) {
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for(T p : pa.getPointsToSet(prop)) {
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for(PointerKey x : Iterator2Iterable.make(h.getPointerKeysForReflectedFieldWrite(o, p))) {
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assert x != null : instruction;
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result.add(x);
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}
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}
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}
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}
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}
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@Override
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protected ModVisitor<T, ? extends ExtendedHeapModel> makeModVisitor(CGNode n, Collection<PointerKey> result, PointerAnalysis<T> pa, ExtendedHeapModel h, boolean ignoreAllocHeapDefs) {
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return new AstModVisitor<>(n, result, (AstHeapModel)h, pa);
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}
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}
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