01: /*
02: * Copyright 2005-2006 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: package javax.lang.model.type;
27:
28: /**
29: * Represents a wildcard type argument.
30: * Examples include: <pre><tt>
31: * ?
32: * ? extends Number
33: * ? super T
34: * </tt></pre>
35: *
36: * <p> A wildcard may have its upper bound explicitly set by an
37: * {@code extends} clause, its lower bound explicitly set by a
38: * {@code super} clause, or neither (but not both).
39: *
40: * @author Joseph D. Darcy
41: * @author Scott Seligman
42: * @author Peter von der Ahé
43: * @version 1.9 07/05/05
44: * @since 1.6
45: */
46: public interface WildcardType extends TypeMirror {
47:
48: /**
49: * Returns the upper bound of this wildcard.
50: * If no upper bound is explicitly declared,
51: * {@code null} is returned.
52: *
53: * @return the upper bound of this wildcard
54: */
55: TypeMirror getExtendsBound();
56:
57: /**
58: * Returns the lower bound of this wildcard.
59: * If no lower bound is explicitly declared,
60: * {@code null} is returned.
61: *
62: * @return the lower bound of this wildcard
63: */
64: TypeMirror getSuperBound();
65: }
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