/*******************************************************************************
* 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 java.util.List;
import org.jboss.tools.common.el.core.model.ELInvocationExpression;
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.ExprEndTokenDescription;
import org.jboss.tools.common.el.internal.core.parser.token.ExprStartTokenDescription;
import org.jboss.tools.common.el.internal.core.parser.token.UnaryTokenDescription;
/**
* '(' expression ')'
* @author V. Kabanovich
*/
public class ELComplexExpressionImpl extends ELExpressionImpl {
ELExpressionImpl expression;
public ELComplexExpressionImpl() {
}
public ELExpressionImpl getExpression() {
return expression;
}
public LexicalToken getOpenExpressionToken() {
LexicalToken result = getFirstToken();
if(result != null &&
(result.getType() == ExprStartTokenDescription.EXPR_START
|| result.getType() == UnaryTokenDescription.UNARY)) {
return result;
} else {
return null;
}
}
public LexicalToken getCloseExpressionToken() {
LexicalToken result = getLastToken();
if(result != null && result.getType() == ExprEndTokenDescription.EXPR_END) {
return result;
} else {
return null;
}
}
public void addChild(ELObjectImpl child) {
if(child instanceof ELExpressionImpl) {
setExpression((ELExpressionImpl)child);
} else {
throw new IllegalArgumentException("EL instance can have only EL expression as child."); //$NON-NLS-1$
}
}
public void setExpression(ELExpressionImpl expression) {
if(this.expression == expression) {
return;
}
if(this.expression != null) {
removeChild(this.expression);
}
this.expression = expression;
if(expression != null) {
super.addChild(expression);
}
}
public String toString() {
StringBuffer sb = new StringBuffer();
if(getOpenExpressionToken() != null) {
sb.append(getOpenExpressionToken().getText());
}
if(expression != null) {
sb.append(expression.toString());
}
if(getCloseExpressionToken() != null) {
sb.append(getCloseExpressionToken().getText());
}
return sb.toString();
}
public ELObjectType getType() {
return ELObjectType.EL_COMPLEX_EXPRESSION;
}
public void collectInvocations(List<ELInvocationExpression> list) {
if(expression != null) {
expression.collectInvocations(list);
}
}
}