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Java > Open Source Codes > net > sf > retrotranslator > runtime > impl > GenericDeclarationDescriptor


1 /***
2  * Retrotranslator: a Java bytecode transformer that translates Java classes
3  * compiled with JDK 5.0 into classes that can be run on JVM 1.4.
4  *
5  * Copyright (c) 2005 - 2007 Taras Puchko
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  * notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in the
15  * documentation and/or other materials provided with the distribution.
16  * 3. Neither the name of the copyright holders nor the names of its
17  * contributors may be used to endorse or promote products derived from
18  * this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30  * THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 package net.sf.retrotranslator.runtime.impl;
33
34 import java.lang.reflect.*;
35 import net.sf.retrotranslator.runtime.asm.signature.SignatureVisitor;
36
37 /**
38  * @author Taras Puchko
39  */
40 public abstract class GenericDeclarationDescriptor extends AnnotatedElementDescriptor {
41
42     private LazyList<TypeParameter, TypeVariable> typeParameters = new LazyList<TypeParameter, TypeVariable>() {
43
44         protected TypeVariable resolve(TypeParameter input) {
45             return new TypeVariableImpl(getTarget(), input.name, input.bounds);
46         }
47
48         protected TypeVariable[] newArray(int size) {
49             return new TypeVariable[size];
50         }
51     };
52
53     protected TypeVariable getTypeVariable(String JavaDoc name) {
54         for (TypeVariable variable : typeParameters.getLive()) {
55             if (name.equals(variable.getName())) return variable;
56         }
57         return null;
58     }
59
60     public abstract GenericDeclaration getTarget();
61
62     public TypeVariable[] getTypeParameters() {
63         return typeParameters.getClone();
64     }
65
66     public void visitFormalTypeParameter(String JavaDoc name) {
67         typeParameters.add(new TypeParameter(name, getLazyList()));
68     }
69
70     public SignatureVisitor visitClassBound() {
71         TypeDescriptor descriptor = new TypeDescriptor();
72         typeParameters.getLast().bounds.add(descriptor);
73         return descriptor;
74     }
75
76     public SignatureVisitor visitInterfaceBound() {
77         TypeDescriptor descriptor = new TypeDescriptor();
78         typeParameters.getLast().bounds.add(descriptor);
79         return descriptor;
80     }
81
82 }
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