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Java > Open Source Codes > com > tc > aspectwerkz > aspect > container > PerJVMAspectFactoryCompiler


1 /*
2  * All content copyright (c) 2003-2006 Terracotta, Inc., except as may otherwise be noted in a separate copyright notice. All rights reserved.
3  */
4 package com.tc.aspectwerkz.aspect.container;
5
6 import com.tc.asm.MethodVisitor;
7 import com.tc.asm.Label;
8
9 /**
10  * Simplest factory for perJVM aspects
11  *
12  * @author <a HREF="mailto:alex AT gnilux DOT com">Alexandre Vasseur</a>
13  * @author Jonas Bon&#233;r
14  */
15 public class PerJVMAspectFactoryCompiler extends AbstractAspectFactoryCompiler {
16
17   public PerJVMAspectFactoryCompiler(String JavaDoc uuid,
18                                      String JavaDoc aspectClassName,
19                                      String JavaDoc aspectQualifiedName,
20                                      String JavaDoc containerClassName,
21                                      String JavaDoc rawParameters,
22                                      ClassLoader JavaDoc loader) {
23     super(uuid, aspectClassName, aspectQualifiedName, containerClassName, rawParameters, loader);
24   }
25
26   protected void createAspectOf() {
27     m_cw.visitField(
28             ACC_PUBLIC + ACC_STATIC,
29             FACTORY_SINGLE_ASPECT_FIELD_NAME,
30             m_aspectClassSignature,
31             null,
32             null
33     );
34
35     MethodVisitor cv = m_cw.visitMethod(
36             ACC_PUBLIC + ACC_STATIC + ACC_FINAL,
37             FACTORY_ASPECTOF_METHOD_NAME,
38             "()" + m_aspectClassSignature,
39             null,
40             null
41     );
42
43     cv.visitFieldInsn(GETSTATIC, m_aspectFactoryClassName, FACTORY_SINGLE_ASPECT_FIELD_NAME, m_aspectClassSignature);
44     Label ifNonNull = new Label();
45     cv.visitJumpInsn(IFNONNULL, ifNonNull);
46     if (m_hasAspectContainer) {
47       cv.visitFieldInsn(GETSTATIC, m_aspectFactoryClassName, FACTORY_CONTAINER_FIELD_NAME, ASPECT_CONTAINER_CLASS_SIGNATURE);
48       cv.visitMethodInsn(INVOKEINTERFACE, ASPECT_CONTAINER_CLASS_NAME, ASPECT_CONTAINER_ASPECTOF_METHOD_NAME, ASPECT_CONTAINER_ASPECTOF_PERJVM_METHOD_SIGNATURE);
49       cv.visitTypeInsn(CHECKCAST, m_aspectClassName);
50     } else {
51       cv.visitTypeInsn(NEW, m_aspectClassName);
52       cv.visitInsn(DUP);
53       cv.visitMethodInsn(INVOKESPECIAL, m_aspectClassName, INIT_METHOD_NAME, NO_PARAM_RETURN_VOID_SIGNATURE);
54     }
55     cv.visitFieldInsn(PUTSTATIC, m_aspectFactoryClassName, FACTORY_SINGLE_ASPECT_FIELD_NAME, m_aspectClassSignature);
56     cv.visitLabel(ifNonNull);
57     cv.visitFieldInsn(GETSTATIC, m_aspectFactoryClassName, FACTORY_SINGLE_ASPECT_FIELD_NAME, m_aspectClassSignature);
58     cv.visitInsn(ARETURN);
59     cv.visitMaxs(0, 0);
60   }
61
62   protected void createHasAspect() {
63     MethodVisitor cv = m_cw.visitMethod(
64             ACC_STATIC + ACC_PUBLIC + ACC_FINAL,
65             FACTORY_HASASPECT_METHOD_NAME,
66             NO_PARAM_RETURN_BOOLEAN_SIGNATURE,
67             null,
68             null
69     );
70
71     cv.visitFieldInsn(GETSTATIC, m_aspectFactoryClassName, FACTORY_SINGLE_ASPECT_FIELD_NAME, m_aspectClassSignature);
72     Label ifNonNull = new Label();
73     cv.visitJumpInsn(IFNONNULL, ifNonNull);
74     cv.visitInsn(ICONST_0);
75     cv.visitInsn(IRETURN);
76     cv.visitLabel(ifNonNull);
77     cv.visitInsn(ICONST_1);
78     cv.visitInsn(IRETURN);
79     cv.visitMaxs(0, 0);
80   }
81
82   protected void createOtherArtifacts() {
83     ;
84   }
85 }
86
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