80 lines
3.1 KiB
Java
80 lines
3.1 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.java.ssa;
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import java.util.Collection;
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import com.ibm.wala.cast.ir.ssa.AstLexicalAccess.Access;
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import com.ibm.wala.cast.ir.ssa.FixedParametersLexicalInvokeInstruction;
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import com.ibm.wala.classLoader.CallSiteReference;
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import com.ibm.wala.classLoader.JavaLanguage;
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import com.ibm.wala.ssa.SSAInstruction;
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import com.ibm.wala.ssa.SSAInstructionFactory;
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import com.ibm.wala.ssa.SSAInvokeInstruction;
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import com.ibm.wala.types.TypeReference;
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/**
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* This is a normal Java invoke instruction as generated by the CAst source language front end; its only difference from the normal
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* SSAInvokeInstruction is that it is subclassed from invoke instructions that support explicit handling of lexical scoping. So it
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* behaves exactly like an invoke from bytecode, except that it has extra state for managing lexical uses and definitions.
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*
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* @author Julian Dolby (dolby@us.ibm.com)
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*/
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public class AstJavaInvokeInstruction extends FixedParametersLexicalInvokeInstruction {
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protected AstJavaInvokeInstruction(int iindex, int results[], int[] params, int exception, CallSiteReference site) {
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super(iindex, results, params, exception, site);
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}
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public AstJavaInvokeInstruction(int iindex, int result, int[] params, int exception, CallSiteReference site) {
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this(iindex, new int[] { result }, params, exception, site);
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SSAInvokeInstruction.assertParamsKosher(result, params, site);
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}
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/**
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* Constructor InvokeInstruction. This case for void return values
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*/
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public AstJavaInvokeInstruction(int iindex, int[] params, int exception, CallSiteReference site) {
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this(iindex, null, params, exception, site);
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}
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public AstJavaInvokeInstruction(int iindex, int results[], int[] params, int exception, CallSiteReference site, Access[] lexicalReads,
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Access[] lexicalWrites) {
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super(iindex, results, params, exception, site, lexicalReads, lexicalWrites);
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}
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@Override
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protected SSAInstruction copyInstruction(SSAInstructionFactory insts, int results[], int[] params, int exception,
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Access[] lexicalReads, Access[] lexicalWrites) {
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return ((AstJavaInstructionFactory) insts).JavaInvokeInstruction(iindex, results, params, exception, getCallSite(), lexicalReads,
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lexicalWrites);
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}
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/**
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* @see com.ibm.domo.ssa.SSAInstruction#visit(IVisitor)
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*/
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@Override
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public void visit(IVisitor v) {
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((AstJavaInstructionVisitor) v).visitJavaInvoke(this);
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}
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/*
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* (non-Javadoc)
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*
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* @see com.ibm.domo.ssa.Instruction#getExceptionTypes()
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*/
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@Override
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public Collection<TypeReference> getExceptionTypes() {
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return JavaLanguage.getNullPointerException();
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}
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}
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