1 /* 2 * Copyright (c) 2011, 2018, 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.annotation.processing.SupportedSourceVersion; 29 import javax.lang.model.type.*; 30 31 import static javax.lang.model.SourceVersion.*; 32 33 /** 34 * A skeletal visitor of types with default behavior appropriate for 35 * the {@link javax.lang.model.SourceVersion#RELEASE_8 RELEASE_8} 36 * source version. 37 * 38 * <p> <b>WARNING:</b> The {@code TypeVisitor} interface implemented 39 * by this class may have methods added to it in the future to 40 * accommodate new, currently unknown, language structures added to 41 * future versions of the Java™ programming language. 42 * Therefore, methods whose names begin with {@code "visit"} may be 43 * added to this class in the future; to avoid incompatibilities, 44 * classes which extend this class should not declare any instance 45 * methods with names beginning with {@code "visit"}. 46 * 47 * <p>When such a new visit method is added, the default 48 * implementation in this class will be to call the {@link 49 * #visitUnknown visitUnknown} method. A new abstract type visitor 50 * class will also be introduced to correspond to the new language 51 * level; this visitor will have different default behavior for the 52 * visit method in question. When the new visitor is introduced, all 53 * or portions of this visitor may be deprecated. 54 * 55 * @param <R> the return type of this visitor's methods. Use {@link 56 * Void} for visitors that do not need to return results. 57 * @param <P> the type of the additional parameter to this visitor's 58 * methods. Use {@code Void} for visitors that do not need an 59 * additional parameter. 60 * 61 * @see AbstractTypeVisitor6 62 * @see AbstractTypeVisitor7 63 * @see AbstractTypeVisitor9 64 * @since 1.8 65 */ 66 @SupportedSourceVersion(RELEASE_8) 67 public abstract class AbstractTypeVisitor8<R, P> extends AbstractTypeVisitor7<R, P> { 68 /** 69 * Constructor for concrete subclasses to call. 70 */ 71 @SuppressWarnings("deprecation") // Superclass constructor deprecated AbstractTypeVisitor8()72 protected AbstractTypeVisitor8() { 73 super(); 74 } 75 76 /** 77 * Visits an {@code IntersectionType} in a manner defined by a subclass. 78 * 79 * @param t {@inheritDoc} 80 * @param p {@inheritDoc} 81 * @return the result of the visit as defined by a subclass 82 */ 83 @Override visitIntersection(IntersectionType t, P p)84 public abstract R visitIntersection(IntersectionType t, P p); 85 } 86