001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements. See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership. The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the  "License");
007     * you may not use this file except in compliance with the License.
008     * You may obtain a copy of the License at
009     *
010     *     http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    /*
019     * $Id: NamespaceAlias.java 468650 2006-10-28 07:03:30Z minchau $
020     */
021    
022    package org.apache.xalan.xsltc.compiler;
023    
024    import org.apache.xalan.xsltc.compiler.util.ClassGenerator;
025    import org.apache.xalan.xsltc.compiler.util.MethodGenerator;
026    import org.apache.xalan.xsltc.compiler.util.Type;
027    import org.apache.xalan.xsltc.compiler.util.TypeCheckError;
028    
029    /**
030     * @author Jacek Ambroziak
031     * @author Santiago Pericas-Geertsen
032     */
033    final class NamespaceAlias extends TopLevelElement {
034    
035        private String sPrefix;
036        private String rPrefix;
037            
038        /*
039         * The namespace alias definitions given here have an impact only on
040         * literal elements and literal attributes.
041         */
042        public void parseContents(Parser parser) {
043            sPrefix = getAttribute("stylesheet-prefix");
044            rPrefix = getAttribute("result-prefix");
045            parser.getSymbolTable().addPrefixAlias(sPrefix,rPrefix);
046        }
047            
048        public Type typeCheck(SymbolTable stable) throws TypeCheckError {
049            return Type.Void;
050        }
051            
052        public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
053            // do nada
054        }
055    }