| package org.apache.velocity.runtime.parser.node; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| import org.apache.velocity.context.InternalContextAdapter; |
| import org.apache.velocity.exception.MethodInvocationException; |
| import org.apache.velocity.exception.ParseErrorException; |
| import org.apache.velocity.exception.ResourceNotFoundException; |
| import org.apache.velocity.exception.TemplateInitException; |
| import org.apache.velocity.runtime.parser.Parser; |
| |
| import java.io.IOException; |
| import java.io.Writer; |
| |
| /** |
| * This class is responsible for handling the ElseIf VTL control statement. |
| * |
| * Please look at the Parser.jjt file which is |
| * what controls the generation of this class. |
| * |
| * @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a> |
| * @author <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a> |
| * @version $Id$ |
| */ |
| public class ASTElseIfStatement extends SimpleNode |
| { |
| /** |
| * @param id |
| */ |
| public ASTElseIfStatement(int id) |
| { |
| super(id); |
| } |
| |
| /** |
| * @param p |
| * @param id |
| */ |
| public ASTElseIfStatement(Parser p, int id) |
| { |
| super(p, id); |
| } |
| |
| /** |
| * @throws TemplateInitException |
| * @see org.apache.velocity.runtime.parser.node.Node#init(org.apache.velocity.context.InternalContextAdapter, java.lang.Object) |
| */ |
| public Object init( InternalContextAdapter context, Object data) throws TemplateInitException |
| { |
| Object obj = super.init(context, data); |
| cleanupParserAndTokens(); // drop reference to Parser and all JavaCC Tokens |
| return obj; |
| } |
| |
| /** |
| * @see org.apache.velocity.runtime.parser.node.SimpleNode#jjtAccept(org.apache.velocity.runtime.parser.node.ParserVisitor, java.lang.Object) |
| */ |
| public Object jjtAccept(ParserVisitor visitor, Object data) |
| { |
| return visitor.visit(this, data); |
| } |
| |
| /** |
| * An ASTElseStatement is true if the expression |
| * it contains evaluates to true. Expressions know |
| * how to evaluate themselves, so we do that |
| * here and return the value back to ASTIfStatement |
| * where this node was originally asked to evaluate |
| * itself. |
| * @param context |
| * @return True if all children are true. |
| * @throws MethodInvocationException |
| */ |
| public boolean evaluate ( InternalContextAdapter context) |
| throws MethodInvocationException |
| { |
| return jjtGetChild(0).evaluate(context); |
| } |
| |
| /** |
| * @see org.apache.velocity.runtime.parser.node.SimpleNode#render(org.apache.velocity.context.InternalContextAdapter, java.io.Writer) |
| */ |
| public boolean render( InternalContextAdapter context, Writer writer) |
| throws IOException,MethodInvocationException, |
| ResourceNotFoundException, ParseErrorException |
| { |
| return jjtGetChild(1).render( context, writer ); |
| } |
| } |