01: /*
02: * Copyright 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 com.sun.tools.internal.xjc.model;
27:
28: import com.sun.codemodel.internal.JExpression;
29: import com.sun.tools.internal.xjc.outline.Outline;
30: import com.sun.xml.internal.xsom.XmlString;
31:
32: /**
33: * Object that computes the default value expression lazily.
34: *
35: * The computation is done lazily because often the default value
36: * needs to refer to things (such as enum classes) that are only generated
37: * after some of the outline is built.
38: *
39: * @author Kohsuke Kawaguchi
40: */
41: public abstract class CDefaultValue {
42: public abstract JExpression compute(Outline outline);
43:
44: /**
45: * Creates a new {@link CDefaultValue} that computes the default value
46: * by applying a lexical representation to a {@link TypeUse}.
47: */
48: public static CDefaultValue create(final TypeUse typeUse,
49: final XmlString defaultValue) {
50: return new CDefaultValue() {
51: public JExpression compute(Outline outline) {
52: return typeUse.createConstant(outline, defaultValue);
53: }
54: };
55: }
56: }
|