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/*******************************************************************************
* Copyright (c) 2005 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
*******************************************************************************/
/*
*/
package org.eclipse.jem.internal.proxy.initParser.tree;
/**
* The expression (or some nested expression) did not return a value. I.e. it was <code>void</code>.
* This would occur only if the value of expression was being retrieved through getExpressionValue,
* or if a nested expression was used, since in that case the value would of been used as an
* argument or receiver to another expression.
*
* @since 1.0.0
*/
public class NoExpressionValueException extends Exception {
/**
* Comment for <code>serialVersionUID</code>
*
* @since 1.1.0
*/
private static final long serialVersionUID = -7953101867782417964L;
private InternalExpressionProxy proxy;
/**
* Construct with no arguments.
*
* @since 1.0.0
*/
public NoExpressionValueException() {
super();
}
public NoExpressionValueException(Throwable e) {
super(e);
}
/**
* Construct with a message.
*
* @param message
*
* @since 1.0.0
*/
public NoExpressionValueException(String message) {
this(message, null);
}
/**
* Construct with a message and a proxy. This is only used from {@link ExpressionProcesser#getExpressionProxyValue(int, Object[])} when
* the proxy existed but it was not set.
*
* @param message
* @param proxy
*
* @since 1.1.0
*/
public NoExpressionValueException(String message, InternalExpressionProxy proxy) {
super (message);
this.proxy = proxy;
}
/**
* Get the proxy if there is one. It will be a proxy if {@link ExpressionProcesser#getExpressionProxyValue(int, Object[])}
* was for an existing proxy but that proxy was not set. Otherwise it will be null. This is here for callers to
* put special info in the proxy for the not set condition and report better info.
*
* @return the proxy (if not set) or <code>null</code> if no proxy available.
*
* @since 1.1.0
*/
public InternalExpressionProxy getProxy() {
return proxy;
}
}
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