60 lines
2.3 KiB
Java
60 lines
2.3 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.cast.js.ipa.callgraph;
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import com.ibm.wala.cast.js.ipa.summaries.JavaScriptConstructorFunctions;
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import com.ibm.wala.cast.js.types.JavaScriptMethods;
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import com.ibm.wala.classLoader.CallSiteReference;
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import com.ibm.wala.classLoader.IClass;
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import com.ibm.wala.classLoader.IMethod;
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import com.ibm.wala.ipa.callgraph.CGNode;
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import com.ibm.wala.ipa.callgraph.MethodTargetSelector;
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import com.ibm.wala.ipa.cha.IClassHierarchy;
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import com.ibm.wala.ssa.IR;
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import com.ibm.wala.ssa.SSAAbstractInvokeInstruction;
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/**
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* generates instructions to simulate the semantics of JS constructor invocations
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*
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*/
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public class JavaScriptConstructTargetSelector implements MethodTargetSelector {
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private final MethodTargetSelector base;
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private final JavaScriptConstructorFunctions constructors;
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public JavaScriptConstructTargetSelector(IClassHierarchy cha, MethodTargetSelector base) {
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this.constructors = new JavaScriptConstructorFunctions(cha);
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this.base = base;
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}
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public JavaScriptConstructTargetSelector(JavaScriptConstructorFunctions constructors, MethodTargetSelector base) {
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this.constructors = constructors;
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this.base = base;
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}
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@Override
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public IMethod getCalleeTarget(CGNode caller, CallSiteReference site, IClass receiver) {
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if (site.getDeclaredTarget().equals(JavaScriptMethods.ctorReference)) {
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IR callerIR = caller.getIR();
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SSAAbstractInvokeInstruction callStmts[] = callerIR.getCalls(site);
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assert callStmts.length == 1;
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int nargs = callStmts[0].getNumberOfPositionalParameters();
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return constructors.findOrCreateConstructorMethod(callerIR, callStmts[0], receiver, nargs - 1);
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} else {
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return base.getCalleeTarget(caller, site, receiver);
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}
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}
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public boolean mightReturnSyntheticMethod() {
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return true;
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}
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}
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