56 lines
1.5 KiB
Java
56 lines
1.5 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.ssa;
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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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* Abstract base class for {@link SSAGetInstruction} and {@link SSAPutInstruction}.
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*/
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public abstract class SSAFieldAccessInstruction extends SSAInstruction {
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private final FieldReference field;
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private final int ref;
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protected SSAFieldAccessInstruction(int index, FieldReference field, int ref) throws IllegalArgumentException {
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super(index);
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this.field = field;
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this.ref = ref;
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if (field == null) {
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throw new IllegalArgumentException("field cannot be null");
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}
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}
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public TypeReference getDeclaredFieldType() {
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return field.getFieldType();
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}
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public FieldReference getDeclaredField() {
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return field;
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}
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public int getRef() {
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return ref;
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}
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public boolean isStatic() {
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return ref == -1;
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}
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@Override
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public boolean isPEI() {
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return !isStatic();
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}
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}
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