Thu, 31 Aug 2017 15:17:03 +0800
merge
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. Oracle designates this |
aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
aoqi@0 | 10 | * |
aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 15 | * accompanied this code). |
aoqi@0 | 16 | * |
aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 20 | * |
aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 23 | * questions. |
aoqi@0 | 24 | */ |
aoqi@0 | 25 | |
aoqi@0 | 26 | package javax.lang.model.type; |
aoqi@0 | 27 | |
aoqi@0 | 28 | |
aoqi@0 | 29 | /** |
aoqi@0 | 30 | * Represents a wildcard type argument. |
aoqi@0 | 31 | * Examples include: <pre><tt> |
aoqi@0 | 32 | * ? |
aoqi@0 | 33 | * ? extends Number |
aoqi@0 | 34 | * ? super T |
aoqi@0 | 35 | * </tt></pre> |
aoqi@0 | 36 | * |
aoqi@0 | 37 | * <p> A wildcard may have its upper bound explicitly set by an |
aoqi@0 | 38 | * {@code extends} clause, its lower bound explicitly set by a |
aoqi@0 | 39 | * {@code super} clause, or neither (but not both). |
aoqi@0 | 40 | * |
aoqi@0 | 41 | * @author Joseph D. Darcy |
aoqi@0 | 42 | * @author Scott Seligman |
aoqi@0 | 43 | * @author Peter von der Ahé |
aoqi@0 | 44 | * @since 1.6 |
aoqi@0 | 45 | */ |
aoqi@0 | 46 | public interface WildcardType extends TypeMirror { |
aoqi@0 | 47 | |
aoqi@0 | 48 | /** |
aoqi@0 | 49 | * Returns the upper bound of this wildcard. |
aoqi@0 | 50 | * If no upper bound is explicitly declared, |
aoqi@0 | 51 | * {@code null} is returned. |
aoqi@0 | 52 | * |
aoqi@0 | 53 | * @return the upper bound of this wildcard |
aoqi@0 | 54 | */ |
aoqi@0 | 55 | TypeMirror getExtendsBound(); |
aoqi@0 | 56 | |
aoqi@0 | 57 | /** |
aoqi@0 | 58 | * Returns the lower bound of this wildcard. |
aoqi@0 | 59 | * If no lower bound is explicitly declared, |
aoqi@0 | 60 | * {@code null} is returned. |
aoqi@0 | 61 | * |
aoqi@0 | 62 | * @return the lower bound of this wildcard |
aoqi@0 | 63 | */ |
aoqi@0 | 64 | TypeMirror getSuperBound(); |
aoqi@0 | 65 | } |