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1 /* 2 * 3 * ==================================================================== 4 * 5 * The Apache Software License, Version 1.1 6 * 7 * Copyright (c) 1999 The Apache Software Foundation. All rights 8 * reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in 19 * the documentation and/or other materials provided with the 20 * distribution. 21 * 22 * 3. The end-user documentation included with the redistribution, if 23 * any, must include the following acknowlegement: 24 * "This product includes software developed by the 25 * Apache Software Foundation (http://www.apache.org/)." 26 * Alternately, this acknowlegement may appear in the software itself, 27 * if and wherever such third-party acknowlegements normally appear. 28 * 29 * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software 30 * Foundation" must not be used to endorse or promote products derived 31 * from this software without prior written permission. For written 32 * permission, please contact apache@apache.org. 33 * 34 * 5. Products derived from this software may not be called "Apache" 35 * nor may "Apache" appear in their names without prior written 36 * permission of the Apache Group. 37 * 38 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 39 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 40 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 41 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 42 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 43 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 44 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 45 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 46 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 47 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 48 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 49 * SUCH DAMAGE. 50 * ==================================================================== 51 * 52 * This software consists of voluntary contributions made by many 53 * individuals on behalf of the Apache Software Foundation. For more 54 * information on the Apache Software Foundation, please see 55 * <http://www.apache.org/>;. 56 * 57 */ 58 59 package org.apache.commons.jelly.tags.antlr; 60 61 import org.apache.commons.jelly.XMLOutput; 62 import org.apache.commons.jelly.TagSupport; 63 import org.apache.commons.jelly.JellyException; 64 65 public class GrammarTag extends TagSupport 66 { 67 public GrammarTag() 68 { 69 } 70 71 72 // Tag interface 73 //------------------------------------------------------------------------- 74 75 public void doTag(final XMLOutput output) throws Exception 76 { 77 String grammar = getBodyText(); 78 79 AntlrTag antlr = (AntlrTag) findAncestorWithClass( AntlrTag.class ); 80 81 if ( antlr == null ) 82 { 83 throw new JellyException( "<grammar> should only be used within an <antlr> block." ); 84 } 85 86 antlr.addGrammar( grammar ); 87 } 88 }

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