01: /*
02: * Copyright 2003-2004 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 sun.reflect.generics.tree;
27:
28: import sun.reflect.generics.visitor.TypeTreeVisitor;
29:
30: public class Wildcard implements TypeArgument {
31: private FieldTypeSignature[] upperBounds;
32: private FieldTypeSignature[] lowerBounds;
33:
34: private Wildcard(FieldTypeSignature[] ubs, FieldTypeSignature[] lbs) {
35: upperBounds = ubs;
36: lowerBounds = lbs;
37: }
38:
39: private static final FieldTypeSignature[] emptyBounds = new FieldTypeSignature[0];
40:
41: public static Wildcard make(FieldTypeSignature[] ubs,
42: FieldTypeSignature[] lbs) {
43: return new Wildcard(ubs, lbs);
44: }
45:
46: public FieldTypeSignature[] getUpperBounds() {
47: return upperBounds;
48: }
49:
50: public FieldTypeSignature[] getLowerBounds() {
51: if (lowerBounds.length == 1
52: && lowerBounds[0] == BottomSignature.make())
53: return emptyBounds;
54: else
55: return lowerBounds;
56: }
57:
58: public void accept(TypeTreeVisitor<?> v) {
59: v.visitWildcard(this);
60: }
61: }
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