| 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.TemplateInitException; |
| import org.apache.velocity.runtime.RuntimeConstants; |
| import org.apache.velocity.runtime.parser.Parser; |
| |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| |
| /** |
| * AST Node for creating a map / dictionary. |
| * |
| * This class was originally generated from Parser.jjt. |
| * |
| * @version $Id$ |
| * @since 1.5 |
| */ |
| public class ASTMap extends SimpleNode |
| { |
| /** |
| * @param id |
| */ |
| public ASTMap(int id) |
| { |
| super(id); |
| } |
| |
| /** |
| * @param p |
| * @param id |
| */ |
| public ASTMap(Parser p, int id) |
| { |
| super(p, id); |
| } |
| |
| /** |
| * @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); |
| } |
| |
| /** |
| * @see org.apache.velocity.runtime.parser.node.SimpleNode#value(org.apache.velocity.context.InternalContextAdapter) |
| */ |
| public Object value(InternalContextAdapter context) |
| throws MethodInvocationException |
| { |
| int size = jjtGetNumChildren(); |
| |
| Map objectMap = new LinkedHashMap(); |
| |
| for (int i = 0; i < size; i += 2) |
| { |
| SimpleNode keyNode = (SimpleNode) jjtGetChild(i); |
| SimpleNode valueNode = (SimpleNode) jjtGetChild(i+1); |
| |
| Object key = (keyNode == null ? null : keyNode.value(context)); |
| Object value = (valueNode == null ? null : valueNode.value(context)); |
| |
| objectMap.put(key, value); |
| } |
| |
| return objectMap; |
| } |
| |
| /** |
| * @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#evaluate(org.apache.velocity.context.InternalContextAdapter) |
| */ |
| public boolean evaluate( InternalContextAdapter context) |
| { |
| return !rsvc.getBoolean(RuntimeConstants.CHECK_EMPTY_OBJECTS, true) || children != null && children.length > 0; |
| } |
| } |