1 /* 2 * Copyright (c) 2011, 2020, 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 static javax.lang.model.SourceVersion.*; 31 import javax.lang.model.SourceVersion; 32 33 /** 34 * A visitor of program elements based on their {@linkplain 35 * ElementKind kind} with default behavior appropriate for the {@link 36 * SourceVersion#RELEASE_8 RELEASE_8} source version. For {@linkplain 37 * Element elements} <code><i>Xyz</i></code> that may have more than one 38 * kind, the <code>visit<i>Xyz</i></code> methods in this class delegate 39 * to the <code>visit<i>Xyz</i>As<i>Kind</i></code> method corresponding to the 40 * first argument's kind. The <code>visit<i>Xyz</i>As<i>Kind</i></code> methods 41 * call {@link #defaultAction defaultAction}, passing their arguments 42 * to {@code defaultAction}'s corresponding parameters. 43 * 44 * @apiNote 45 * Methods in this class may be overridden subject to their 46 * general contract. 47 * 48 * @param <R> the return type of this visitor's methods. Use {@link 49 * Void} for visitors that do not need to return results. 50 * @param <P> the type of the additional parameter to this visitor's 51 * methods. Use {@code Void} for visitors that do not need an 52 * additional parameter. 53 * 54 * @see <a href="ElementKindVisitor6.html#note_for_subclasses"> 55 * <strong>Compatibility note for subclasses</strong></a> 56 * @see ElementKindVisitor6 57 * @see ElementKindVisitor7 58 * @see ElementKindVisitor9 59 * @see ElementKindVisitor14 60 * @since 1.8 61 */ 62 @SupportedSourceVersion(RELEASE_8) 63 public class ElementKindVisitor8<R, P> extends ElementKindVisitor7<R, P> { 64 /** 65 * Constructor for concrete subclasses; uses {@code null} for the 66 * default value. 67 */ 68 @SuppressWarnings("deprecation") // Superclass constructor deprecated 69 protected ElementKindVisitor8() { 70 super(null); 71 } 72 73 /** 74 * Constructor for concrete subclasses; uses the argument for the 75 * default value. 76 * 77 * @param defaultValue the value to assign to {@link #DEFAULT_VALUE} 78 */ 79 @SuppressWarnings("deprecation") // Superclass constructor deprecated 80 protected ElementKindVisitor8(R defaultValue) { 81 super(defaultValue); 82 } 83 }