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Java > Open Source Codes > org > aspectj > compiler > base > ast > CopyWalker


1 /* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2  *
3  * This file is part of the compiler and core tools for the AspectJ(tm)
4  * programming language; see http://aspectj.org
5  *
6  * The contents of this file are subject to the Mozilla Public License
7  * Version 1.1 (the "License"); you may not use this file except in
8  * compliance with the License. You may obtain a copy of the License at
9  * either http://www.mozilla.org/MPL/ or http://aspectj.org/MPL/.
10  *
11  * Software distributed under the License is distributed on an "AS IS" basis,
12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13  * for the specific language governing rights and limitations under the
14  * License.
15  *
16  * The Original Code is AspectJ.
17  *
18  * The Initial Developer of the Original Code is Xerox Corporation. Portions
19  * created by Xerox Corporation are Copyright (C) 1999-2002 Xerox Corporation.
20  * All Rights Reserved.
21  *
22  * Contributor(s):
23  */
24
25 package org.aspectj.compiler.base.ast;
26 import org.aspectj.compiler.base.JavaCompiler;
27 import org.aspectj.compiler.base.CompilerObject;
28 import org.aspectj.compiler.base.InternalCompilerError;
29
30 import java.util.*;
31
32 /**
33   */
34 public class CopyWalker extends MovingWalker {
35
36     public static ASTObject rawCopy(ASTObject object1, Type toType) {
37         return new CopyWalker(object1.getCompiler(), null, toType) {
38                 public ASTObject process(ASTObject object) {
39                     ASTObject copy = object.copyWalk(this);
40                     return copy.postCopy(this, object);
41                 }
42             }.process(object1);
43     }
44
45
46     public static ASTObject copy(ASTObject object) {
47         return new CopyWalker(object.getCompiler()).process(object);
48     }
49
50     public static ASTObject copy(ASTObject object, Map map) {
51         CopyWalker cw = new CopyWalker(object.getCompiler());
52         cw.addMappings(map);
53         return cw.process(object);
54     }
55
56     public CopyWalker(JavaCompiler compiler) {
57         super(compiler);
58     }
59     public CopyWalker(JavaCompiler compiler, Type fromType, Type toType) {
60         super(compiler, fromType, toType);
61     }
62
63     public ASTObject cp(ASTObject object) {
64         if (object == null) return null;
65         return process(object);
66     }
67
68     public ASTObject process(ASTObject object) {
69         object.preMove(this);
70         ASTObject copy = object.copyWalk(this);
71         copy = copy.postCopy(this, object);
72         return copy.postMove(this);
73     }
74 }
75
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