/*******************************************************************************
* Copyright (c) 2007 Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
* Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.common.el.internal.core.model;
import org.jboss.tools.common.el.core.model.ELArgument;
import org.jboss.tools.common.el.core.model.ELObjectType;
import org.jboss.tools.common.el.core.parser.LexicalToken;
import org.jboss.tools.common.el.internal.core.parser.token.ArgEndTokenDescription;
import org.jboss.tools.common.el.internal.core.parser.token.ArgStartTokenDescription;
/**
*
* @author V. Kabanovich
*
*/
public class ELArgumentImpl extends ELObjectImpl implements ELArgument {
ELExpressionImpl argument;
public ELArgumentImpl() {}
public ELExpressionImpl getArgument() {
return argument;
}
public LexicalToken getOpenArgumentToken() {
LexicalToken result = getFirstToken();
if(result != null && result.getType() == ArgStartTokenDescription.ARG_START) {
return result;
} else {
return null;
}
}
public LexicalToken getCloseArgumentToken() {
LexicalToken result = getLastToken();
if(result != null && result.getType() == ArgEndTokenDescription.ARG_END) {
return result;
} else {
return null;
}
}
public void addChild(ELObjectImpl child) {
if(child instanceof ELExpressionImpl) {
setArgument((ELExpressionImpl)child);
} else {
throw new IllegalArgumentException("EL argument can have only EL expression as its child."); //$NON-NLS-1$
}
}
public void setArgument(ELExpressionImpl arg) {
if(argument == arg) return;
if(argument != null) {
removeChild(argument);
}
if(arg != null) {
super.addChild(arg);
}
argument = arg;
}
public String toString() {
StringBuffer sb = new StringBuffer();
if(getOpenArgumentToken() != null) {
sb.append(getOpenArgumentToken().getText());
}
if(argument != null) {
sb.append(argument.toString());
}
if(getCloseArgumentToken() != null) {
sb.append(getCloseArgumentToken().getText());
}
return sb.toString();
}
public ELObjectType getType() {
return ELObjectType.EL_ARGUMENT;
}
}