aoqi@0: /*
aoqi@0:  * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: package javax.lang.model.type;
aoqi@0: 
aoqi@0: 
aoqi@0: /**
aoqi@0:  * Represents a wildcard type argument.
aoqi@0:  * Examples include:    <pre><tt>
aoqi@0:  *   ?
aoqi@0:  *   ? extends Number
aoqi@0:  *   ? super T
aoqi@0:  * </tt></pre>
aoqi@0:  *
aoqi@0:  * <p> A wildcard may have its upper bound explicitly set by an
aoqi@0:  * {@code extends} clause, its lower bound explicitly set by a
aoqi@0:  * {@code super} clause, or neither (but not both).
aoqi@0:  *
aoqi@0:  * @author Joseph D. Darcy
aoqi@0:  * @author Scott Seligman
aoqi@0:  * @author Peter von der Ah&eacute;
aoqi@0:  * @since 1.6
aoqi@0:  */
aoqi@0: public interface WildcardType extends TypeMirror {
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Returns the upper bound of this wildcard.
aoqi@0:      * If no upper bound is explicitly declared,
aoqi@0:      * {@code null} is returned.
aoqi@0:      *
aoqi@0:      * @return the upper bound of this wildcard
aoqi@0:      */
aoqi@0:     TypeMirror getExtendsBound();
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Returns the lower bound of this wildcard.
aoqi@0:      * If no lower bound is explicitly declared,
aoqi@0:      * {@code null} is returned.
aoqi@0:      *
aoqi@0:      * @return the lower bound of this wildcard
aoqi@0:      */
aoqi@0:     TypeMirror getSuperBound();
aoqi@0: }