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Java > Open Source Codes > org > aspectj > compiler > crosscuts > AdviceWeaver


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.crosscuts;
26
27 import org.aspectj.compiler.crosscuts.ast.*;
28 import org.aspectj.compiler.crosscuts.joinpoints.*;
29
30 import org.aspectj.compiler.base.ast.*;
31 import org.aspectj.compiler.base.*;
32 import org.aspectj.util.CollectionUtil;
33
34 import java.util.*;
35
36 /**************************************************************************
37  * Here's a new implementation of advice weaving that works basically on
38  * a per-file basis. It does require global knowledge of all the aspects
39  * in the system. The only way that restriction will ever go away is after
40  * we start to support weaving at class load time.
41  */
42 public class AdviceWeaver extends WalkerPass {
43     
44     public AdviceWeaver(JavaCompiler compiler) {
45         super(compiler);
46     }
47
48     public String JavaDoc getDisplayName() {
49         return "weaving advice";
50     }
51
52     protected void postProcess(ASTObject object) {
53         if (object instanceof TypeDec) weaveInto((TypeDec)object);
54     }
55
56     public void weaveInto(TypeDec typeDec) {
57         getCompiler().showMessage(" weaving into " + typeDec.toShortString());
58         applyAspectsOf(typeDec);
59         implementPlans(typeDec.joinPoints0);
60         implementPlans(typeDec.joinPoints1);
61         implementPlans(typeDec.joinPoints2, typeDec.getInitializerExecutionJoinPoints());
62         implementPlans(typeDec.getInitializerExecutionJoinPoints());
63     }
64     
65     void applyAspectsOf(TypeDec typeDec) {
66         getWorld().runTypeDecPlanners(typeDec, TypeDecPlanner.BODY);
67     }
68
69     void implementPlans(Collection jps) {
70         implementPlans(jps, null);
71     }
72     
73     void implementPlans(Collection jps, Collection skipSet) {
74         for (Iterator i = jps.iterator(); i.hasNext(); ) {
75             JoinPoint joinPoint = (JoinPoint)i.next();
76             if (skipSet != null && skipSet.contains(joinPoint)) continue;
77             joinPoint.implementPlans();
78         }
79     }
80 }
81
82
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