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: Closure.java 468650 2006-10-28 07:03:30Z minchau $
020     */
021    
022    package org.apache.xalan.xsltc.compiler;
023    
024    /**
025     * @author Santiago Pericas-Geertsen
026     */
027    public interface Closure {
028    
029        /**
030         * Returns true if this closure is compiled in an inner class (i.e.
031         * if this is a real closure).
032         */
033        public boolean inInnerClass();
034    
035        /**
036         * Returns a reference to its parent closure or null if outermost.
037         */
038        public Closure getParentClosure();
039    
040        /**
041         * Returns the name of the auxiliary class or null if this predicate 
042         * is compiled inside the Translet.
043         */
044        public String getInnerClassName();
045    
046        /**
047         * Add new variable to the closure.
048         */
049        public void addVariable(VariableRefBase variableRef);
050    }