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/*******************************************************************************
* Copyright (c) 2005, 2009 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Bjorn Freeman-Benson - initial API and implementation
* Pawel Piech (Wind River) - ported PDA Virtual Machine to Java (Bug 261400)
*******************************************************************************/
package org.eclipse.debug.examples.core.pda.model;
import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.core.model.IValue;
import org.eclipse.debug.core.model.IVariable;
/**
* A value on the data stack
*/
public class PDAStackValue extends PDADebugElement implements IValue {
final private PDAThread fThread;
final private String fValue;
final private int fIndex;
/**
* Constructs a value that appears on the data stack
*
* @param target debug target
* @param value value on the stack
* @param index index on the stack
*/
public PDAStackValue(PDAThread thread, String value, int index) {
super(thread.getDebugTarget());
fThread = thread;
fValue = value;
fIndex = index;
}
public PDAThread getThread() {
return fThread;
}
/* (non-Javadoc)
* @see org.eclipse.debug.core.model.IValue#getValueString()
*/
@Override
public String getValueString() throws DebugException {
return fValue;
}
/* (non-Javadoc)
* @see org.eclipse.debug.core.model.IValue#isAllocated()
*/
@Override
public boolean isAllocated() throws DebugException {
return true;
}
/* (non-Javadoc)
* @see org.eclipse.debug.core.model.IValue#getVariables()
*/
@Override
public IVariable[] getVariables() throws DebugException {
return new IVariable[0];
}
/* (non-Javadoc)
* @see org.eclipse.debug.core.model.IValue#hasVariables()
*/
@Override
public boolean hasVariables() throws DebugException {
return false;
}
/* (non-Javadoc)
* @see org.eclipse.debug.core.model.IValue#getReferenceTypeName()
*/
@Override
public String getReferenceTypeName() throws DebugException {
return null;
}
/*
* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
return obj instanceof PDAStackValue &&
((PDAStackValue)obj).fValue.equals(fValue) &&
((PDAStackValue)obj).fIndex == fIndex;
}
/*
* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
return super.hashCode() + fIndex;
}
}
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