58 lines
1.8 KiB
Java
58 lines
1.8 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.ir.ssa;
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import java.util.Collection;
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import com.ibm.wala.ssa.SSAGetInstruction;
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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.SymbolTable;
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import com.ibm.wala.types.FieldReference;
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import com.ibm.wala.types.TypeReference;
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/**
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* A read of a global variable denoted by a FieldReference
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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 AstGlobalRead extends SSAGetInstruction {
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public AstGlobalRead(int iindex, int lhs, FieldReference global) {
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super(iindex, lhs, global);
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}
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public SSAInstruction copyForSSA(SSAInstructionFactory insts, int[] defs, int[] uses) {
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return ((AstInstructionFactory)insts).GlobalRead(iindex, (defs==null)? getDef(): defs[0], getDeclaredField());
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}
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public String toString(SymbolTable symbolTable) {
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return getValueString(symbolTable, getDef()) + " = global:" + getGlobalName();
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}
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public void visit(IVisitor v) {
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if (v instanceof AstInstructionVisitor)
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((AstInstructionVisitor)v).visitAstGlobalRead(this);
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}
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public boolean isFallThrough() {
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return true;
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}
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public Collection<TypeReference> getExceptionTypes() {
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return null;
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}
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public String getGlobalName() {
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return getDeclaredField().getName().toString();
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}
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}
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