1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
package org.mule.util.scan.annotations; |
11 | |
|
12 | |
import org.mule.util.scan.ClassScanner; |
13 | |
|
14 | |
import java.util.ArrayList; |
15 | |
import java.util.BitSet; |
16 | |
import java.util.List; |
17 | |
|
18 | |
import org.apache.commons.logging.Log; |
19 | |
import org.apache.commons.logging.LogFactory; |
20 | |
import org.objectweb.asm.AnnotationVisitor; |
21 | |
import org.objectweb.asm.FieldVisitor; |
22 | |
import org.objectweb.asm.MethodVisitor; |
23 | |
import org.objectweb.asm.commons.EmptyVisitor; |
24 | |
|
25 | |
|
26 | |
|
27 | |
|
28 | |
|
29 | |
|
30 | |
|
31 | |
|
32 | |
public class AnnotationsScanner extends EmptyVisitor implements ClassScanner |
33 | |
{ |
34 | 0 | protected final Log log = LogFactory.getLog(getClass()); |
35 | |
|
36 | 0 | private List<AnnotationInfo> classAnnotations = new ArrayList<AnnotationInfo>(); |
37 | 0 | private List<AnnotationInfo> fieldAnnotations = new ArrayList<AnnotationInfo>(); |
38 | 0 | private List<AnnotationInfo> methodAnnotations = new ArrayList<AnnotationInfo>(); |
39 | 0 | private List<AnnotationInfo> paramAnnotations = new ArrayList<AnnotationInfo>(); |
40 | |
|
41 | |
protected AnnotationInfo currentAnnotation; |
42 | |
|
43 | |
protected static final int PROCESSING_FIELD = 1; |
44 | |
protected static final int PROCESSING_METHOD = 2; |
45 | |
protected static final int PROCESSING_CLASS = 3; |
46 | |
protected static final int PROCESSING_PARAM = 4; |
47 | |
|
48 | 0 | protected BitSet currentlyProcessing = new BitSet(4); |
49 | |
|
50 | |
private AnnotationFilter filter; |
51 | |
|
52 | 0 | private BitSet lastProcessing = null; |
53 | |
|
54 | |
private String className; |
55 | |
|
56 | |
private boolean match; |
57 | |
|
58 | |
public AnnotationsScanner() |
59 | |
{ |
60 | 0 | super(); |
61 | 0 | } |
62 | |
|
63 | |
public AnnotationsScanner(AnnotationFilter filter) |
64 | 0 | { |
65 | 0 | this.filter = filter; |
66 | 0 | } |
67 | |
|
68 | |
@Override |
69 | |
public AnnotationVisitor visitParameterAnnotation(final int parameter, final String desc, final boolean visible) |
70 | |
{ |
71 | 0 | currentAnnotation = new AnnotationInfo(); |
72 | 0 | currentAnnotation.setClassName(getAnnotationClassName(desc)); |
73 | 0 | currentlyProcessing.set(PROCESSING_PARAM); |
74 | 0 | if (log.isDebugEnabled()) |
75 | |
{ |
76 | 0 | log.debug("Parameter Annotation: " + getAnnotationClassName(desc)); |
77 | |
} |
78 | 0 | return this; |
79 | |
} |
80 | |
|
81 | |
@Override |
82 | |
public AnnotationVisitor visitAnnotation(final String desc, final boolean visible) |
83 | |
{ |
84 | |
|
85 | 0 | if (currentlyProcessing.nextSetBit(0) < 0) |
86 | |
{ |
87 | 0 | if(lastProcessing!=null) |
88 | |
{ |
89 | 0 | currentlyProcessing = lastProcessing; |
90 | |
} |
91 | |
else |
92 | |
{ |
93 | 0 | return this; |
94 | |
} |
95 | |
} |
96 | |
|
97 | 0 | currentAnnotation = new AnnotationInfo(); |
98 | 0 | currentAnnotation.setClassName(getAnnotationClassName(desc)); |
99 | 0 | if (log.isDebugEnabled()) |
100 | |
{ |
101 | 0 | log.debug("Annotation: " + getAnnotationClassName(desc)); |
102 | |
} |
103 | |
|
104 | 0 | return this; |
105 | |
} |
106 | |
|
107 | |
|
108 | |
|
109 | |
|
110 | |
|
111 | |
@Override |
112 | |
public void visit(final int version, final int access, final String name, final String signature, final String superName, final String[] interfaces) |
113 | |
{ |
114 | 0 | currentlyProcessing.set(PROCESSING_CLASS); |
115 | 0 | className = name; |
116 | 0 | } |
117 | |
|
118 | |
|
119 | |
|
120 | |
|
121 | |
@Override |
122 | |
public void visit(String name, Object value) |
123 | |
{ |
124 | 0 | if (currentAnnotation != null) |
125 | |
{ |
126 | 0 | currentAnnotation.getParams().add(new AnnotationInfo.NameValue(name, value)); |
127 | |
} |
128 | 0 | if (log.isDebugEnabled()) |
129 | |
{ |
130 | |
|
131 | 0 | log.debug(" : " + name + "=" + value); |
132 | |
} |
133 | 0 | } |
134 | |
|
135 | |
@Override |
136 | |
public FieldVisitor visitField(final int access, final String name, final String desc, final String signature, final Object value) |
137 | |
{ |
138 | 0 | currentlyProcessing.set(PROCESSING_FIELD); |
139 | 0 | return this; |
140 | |
} |
141 | |
|
142 | |
@Override |
143 | |
public MethodVisitor visitMethod(final int access, final String name, final String desc, final String signature, final String[] exceptions) |
144 | |
{ |
145 | 0 | currentlyProcessing.set(PROCESSING_METHOD); |
146 | 0 | return this; |
147 | |
} |
148 | |
|
149 | |
|
150 | |
@Override |
151 | |
public void visitEnd() |
152 | |
{ |
153 | 0 | if (currentAnnotation != null) |
154 | |
{ |
155 | |
|
156 | 0 | if(filter!=null && !filter.accept(currentAnnotation)) |
157 | |
{ |
158 | 0 | currentlyProcessing.clear(); |
159 | 0 | currentAnnotation = null; |
160 | 0 | return; |
161 | |
} |
162 | 0 | if (currentlyProcessing.get(PROCESSING_CLASS)) |
163 | |
{ |
164 | 0 | classAnnotations.add(currentAnnotation); |
165 | 0 | match = true; |
166 | |
} |
167 | 0 | if (currentlyProcessing.get(PROCESSING_FIELD)) |
168 | |
{ |
169 | 0 | fieldAnnotations.add(currentAnnotation); |
170 | 0 | match = true; |
171 | |
} |
172 | 0 | else if (currentlyProcessing.get(PROCESSING_PARAM)) |
173 | |
{ |
174 | 0 | paramAnnotations.add(currentAnnotation); |
175 | 0 | match = true; |
176 | |
} |
177 | 0 | else if (currentlyProcessing.get(PROCESSING_METHOD)) |
178 | |
{ |
179 | 0 | methodAnnotations.add(currentAnnotation); |
180 | 0 | match = true; |
181 | |
} |
182 | 0 | currentAnnotation = null; |
183 | |
} |
184 | 0 | lastProcessing = (BitSet)currentlyProcessing.clone(); |
185 | 0 | currentlyProcessing.clear(); |
186 | |
|
187 | 0 | } |
188 | |
|
189 | |
public String getAnnotationClassName(String rawName) |
190 | |
{ |
191 | 0 | return rawName.substring(1, rawName.length() - 1).replace('/', '.'); |
192 | |
} |
193 | |
|
194 | |
public List<AnnotationInfo> getClassAnnotations() |
195 | |
{ |
196 | 0 | return classAnnotations; |
197 | |
} |
198 | |
|
199 | |
public List<AnnotationInfo> getFieldAnnotations() |
200 | |
{ |
201 | 0 | return fieldAnnotations; |
202 | |
} |
203 | |
|
204 | |
public List<AnnotationInfo> getMethodAnnotations() |
205 | |
{ |
206 | 0 | return methodAnnotations; |
207 | |
} |
208 | |
|
209 | |
public List<AnnotationInfo> getParamAnnotations() |
210 | |
{ |
211 | 0 | return paramAnnotations; |
212 | |
} |
213 | |
|
214 | |
public List<AnnotationInfo> getAllAnnotations() |
215 | |
{ |
216 | 0 | List<AnnotationInfo> list = new ArrayList<AnnotationInfo>(); |
217 | 0 | list.addAll(classAnnotations); |
218 | 0 | list.addAll(fieldAnnotations); |
219 | 0 | list.addAll(methodAnnotations); |
220 | 0 | list.addAll(paramAnnotations); |
221 | 0 | return list; |
222 | |
} |
223 | |
|
224 | |
public boolean isMatch() |
225 | |
{ |
226 | 0 | return match; |
227 | |
} |
228 | |
|
229 | |
public String getClassName() |
230 | |
{ |
231 | 0 | return className; |
232 | |
} |
233 | |
} |