1 /* 2 * Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package javax.lang.model.util; 27 28 import javax.lang.model.element.*; 29 import javax.annotation.processing.SupportedSourceVersion; 30 import javax.lang.model.element.*; 31 import static javax.lang.model.element.ElementKind.*; 32 import static javax.lang.model.SourceVersion.*; 33 import javax.lang.model.SourceVersion; 34 35 36 /** 37 * A skeletal visitor of program elements with default behavior 38 * appropriate for the {@link SourceVersion#RELEASE_7 RELEASE_7} 39 * source version. 40 * 41 * <p> <b>WARNING:</b> The {@code ElementVisitor} interface 42 * implemented by this class may have methods added to it in the 43 * future to accommodate new, currently unknown, language structures 44 * added to future versions of the Java™ programming language. 45 * Therefore, methods whose names begin with {@code "visit"} may be 46 * added to this class in the future; to avoid incompatibilities, 47 * classes which extend this class should not declare any instance 48 * methods with names beginning with {@code "visit"}. 49 * 50 * <p>When such a new visit method is added, the default 51 * implementation in this class will be to call the {@link 52 * #visitUnknown visitUnknown} method. A new abstract element visitor 53 * class will also be introduced to correspond to the new language 54 * level; this visitor will have different default behavior for the 55 * visit method in question. When the new visitor is introduced, all 56 * or portions of this visitor may be deprecated. 57 * 58 * @param <R> the return type of this visitor's methods. Use {@link 59 * Void} for visitors that do not need to return results. 60 * @param <P> the type of the additional parameter to this visitor's 61 * methods. Use {@code Void} for visitors that do not need an 62 * additional parameter. 63 * 64 * @see AbstractElementVisitor6 65 * @see AbstractElementVisitor8 66 * @since 1.7 67 */ 68 @SupportedSourceVersion(RELEASE_7) 69 public abstract class AbstractElementVisitor7<R, P> extends AbstractElementVisitor6<R, P> { 70 /** 71 * Constructor for concrete subclasses to call. 72 */ 73 protected AbstractElementVisitor7(){ 74 super(); 75 } 76 }