DBGpNullValue.java

/*******************************************************************************
 * Copyright (c) 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
 *     Zend Technologies
 *******************************************************************************/
package org.eclipse.php.internal.debug.core.xdebug.dbgp.model;

/**
 * DBGp null value.
 * 
 * @author Bartlomiej Laczkowski
 */
public class DBGpNullValue extends AbstractDBGpValue {

	/**
	 * Creates new DBGp null value.
	 * 
	 * @param owner
	 */
	public DBGpNullValue(DBGpVariable owner) {
		super(owner);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.php.internal.debug.core.xdebug.dbgp.model.AbstractDBGpValue#
	 * createValueString(org.eclipse.php.internal.debug.core.xdebug.dbgp.model.
	 * AbstractDBGpValue.DBGpValueData)
	 */
	@Override
	protected String createValueString(DBGpValueData valueData) {
		String valueString = valueData.getValueString();
		if (valueString != null)
			return valueString.trim();
		return DataType.PHP_NULL.getText();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.php.internal.debug.core.xdebug.dbgp.model.AbstractDBGpValue#
	 * supportsValueModification()
	 */
	@Override
	protected boolean supportsValueModification() {
		return true;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.php.internal.debug.core.xdebug.dbgp.model.AbstractDBGpValue#
	 * verifyValue(java.lang.String)
	 */
	@Override
	protected boolean verifyValue(String expression) {
		return true;
	}

}