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- /* *******************************************************************
- * Copyright (c) 2002 Palo Alto Research Center, Incorporated (PARC).
- * All rights reserved.
- * This program and the accompanying materials are made available
- * under the terms of the Common Public License v1.0
- * which accompanies this distribution and is available at
- * http://www.eclipse.org/legal/cpl-v10.html
- *
- * Contributors:
- * PARC initial implementation
- * ******************************************************************/
-
-
- package org.aspectj.weaver.bcel;
-
- import org.aspectj.apache.bcel.Constants;
- import org.aspectj.apache.bcel.generic.Instruction;
- import org.aspectj.apache.bcel.generic.InstructionFactory;
- import org.aspectj.apache.bcel.generic.InstructionList;
- import org.aspectj.apache.bcel.generic.Type;
- import org.aspectj.weaver.Member;
- import org.aspectj.weaver.NameMangler;
- import org.aspectj.weaver.ResolvedTypeX;
-
- /**
- * XXX Erik and I need to discuss this hierarchy. Having FieldRef
- * extend Var is convenient, but hopefully there's a better design.
- *
- * This is always a static reference.
- */
- public class BcelCflowAccessVar extends BcelVar {
-
-
- private Member stackField;
- private int index;
-
- /**
- * @param type The type to convert to from Object
- * @param stackField the member containing the CFLOW_STACK_TYPE
- * @param index yeah yeah
- */
- public BcelCflowAccessVar(ResolvedTypeX type, Member stackField, int index) {
- super(type, 0);
- this.stackField = stackField;
- this.index = index;
- }
-
- public String toString() {
- return "BcelCflowAccessVar(" + getType() + " " + stackField + "." + index + ")";
- }
-
- public Instruction createLoad(InstructionFactory fact) {
- throw new RuntimeException("unimplemented");
- }
- public Instruction createStore(InstructionFactory fact) {
- throw new RuntimeException("unimplemented");
- }
-
- public InstructionList createCopyFrom(InstructionFactory fact, int oldSlot) {
- throw new RuntimeException("unimplemented");
- }
-
- public void appendLoad(InstructionList il, InstructionFactory fact) {
- il.append(createLoadInstructions(getType(), fact));
- }
-
- public InstructionList createLoadInstructions(ResolvedTypeX toType, InstructionFactory fact) {
- InstructionList il = new InstructionList();
-
- il.append(Utility.createGet(fact, stackField));
- il.append(Utility.createConstant(fact, index));
- il.append(
- fact.createInvoke(
- NameMangler.CFLOW_STACK_TYPE, "get",
- Type.OBJECT, new Type[] { Type.INT },
- Constants.INVOKEVIRTUAL));
- il.append(Utility.createConversion(fact, Type.OBJECT, BcelWorld.makeBcelType(toType)));
-
- return il;
-
- }
-
- public void appendLoadAndConvert(
- InstructionList il,
- InstructionFactory fact,
- ResolvedTypeX toType) {
- il.append(createLoadInstructions(toType, fact));
-
- }
-
- public void insertLoad(InstructionList il, InstructionFactory fact) {
- il.insert(createLoadInstructions(getType(), fact));
- }
-
- }
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