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1
8 package org.codehaus.aspectwerkz.reflect.impl.asm;
9
10 import org.codehaus.aspectwerkz.reflect.ClassInfo;
11 import org.codehaus.aspectwerkz.reflect.MethodInfo;
12 import org.codehaus.aspectwerkz.transform.inlining.AsmHelper;
13 import org.codehaus.aspectwerkz.annotation.instrumentation.asm.AsmAnnotationHelper;
14 import org.codehaus.aspectwerkz.exception.DefinitionException;
15 import org.codehaus.aspectwerkz.proxy.ProxyCompiler;
16 import org.objectweb.asm.Type;
17 import org.objectweb.asm.ClassReader;
18 import org.objectweb.asm.attrs.Attributes;
19
20 import java.util.List  ;
21 import java.util.ArrayList ;
22 import java.io.IOException ;
23 import java.io.InputStream ;
24 import java.lang.reflect.Modifier ;
25
26
31 public class AsmMethodInfo extends AsmMemberInfo implements MethodInfo {
32
33
36 private String m_returnTypeName = null;
37
38
42 protected String [] m_parameterNames = null;
43
44
47 private String [] m_parameterTypeNames = null;
48
49
52 private String [] m_exceptionTypeNames = null;
53
54
57 private ClassInfo m_returnType = null;
58
59
62 private ClassInfo[] m_parameterTypes = null;
63
64
67 private ClassInfo[] m_exceptionTypes = null;
68
69
76 AsmMethodInfo(final MethodStruct method, final String declaringType, final ClassLoader loader) {
77 super(method, declaringType, loader);
78
79 m_returnTypeName = Type.getReturnType(method.desc).getClassName();
80 Type[] argTypes = Type.getArgumentTypes(method.desc);
81 m_parameterTypeNames = new String [argTypes.length];
82 for (int i = 0; i < argTypes.length; i++) {
83 m_parameterTypeNames[i] = argTypes[i].getClassName();
84 }
85 m_exceptionTypeNames = new String []{};
87 }
88
89
98 public static MethodInfo getMethodInfo(final String methodName,
99 final String methodDesc,
100 final byte[] bytecode,
101 final ClassLoader loader) {
102 String className = AsmClassInfo.retrieveClassNameFromBytecode(bytecode);
103 AsmClassInfoRepository repository = AsmClassInfoRepository.getRepository(loader);
104 ClassInfo classInfo = repository.getClassInfo(className);
105 if (classInfo == null) {
106 classInfo = AsmClassInfo.getClassInfo(bytecode, loader);
107 }
108 return classInfo.getMethod(AsmHelper.calculateMethodHash(methodName, methodDesc));
109 }
110
111
116 public String getSignature() {
117 return AsmHelper.getMethodDescriptor(this);
118 }
119
120
125 public ClassInfo getReturnType() {
126 if (m_returnType == null) {
127 m_returnType = AsmClassInfo.getClassInfo(m_returnTypeName, (ClassLoader ) m_loaderRef.get());
128 }
129 return m_returnType;
130 }
131
132
137 public ClassInfo[] getParameterTypes() {
138 if (m_parameterTypes == null) {
139 m_parameterTypes = new ClassInfo[m_parameterTypeNames.length];
140 for (int i = 0; i < m_parameterTypeNames.length; i++) {
141 m_parameterTypes[i] = AsmClassInfo.getClassInfo(
142 m_parameterTypeNames[i],
143 (ClassLoader ) m_loaderRef.get()
144 );
145 }
146 }
147 return m_parameterTypes;
148 }
149
150
159 public String [] getParameterNames() {
160 return m_parameterNames;
161 }
162
163
168 public ClassInfo[] getExceptionTypes() {
169 if (m_exceptionTypes == null) {
170 m_exceptionTypes = new ClassInfo[m_exceptionTypeNames.length];
171 for (int i = 0; i < m_exceptionTypeNames.length; i++) {
172 m_exceptionTypes[i] = AsmClassInfo.getClassInfo(
173 m_exceptionTypeNames[i],
174 (ClassLoader ) m_loaderRef.get()
175 );
176 }
177 }
178 return m_exceptionTypes;
179 }
180
181
186 public List getAnnotations() {
187 if (m_annotations == null) {
188 try {
189 InputStream in = null;
190 ClassReader cr = null;
191 try {
192 if ((ClassLoader ) m_loaderRef.get() != null) {
193 in = ((ClassLoader ) m_loaderRef.get()).getResourceAsStream(
194 m_declaringTypeName.replace('.', '/') + ".class"
195 );
196 } else {
197 in = ClassLoader.getSystemClassLoader().getResourceAsStream(
198 m_declaringTypeName.replace('.', '/') + ".class"
199 );
200 }
201 if (in == null) {
202 in = ProxyCompiler.getProxyResourceAsStream((ClassLoader ) m_loaderRef.get(), m_declaringTypeName);
203 }
204 cr = new ClassReader(in);
205 } finally {
206 try {
207 in.close();
208 } catch (Exception e) {
209 ;
210 }
211 }
212 List annotations = new ArrayList ();
213 cr.accept(
214 new AsmAnnotationHelper.MethodAnnotationExtractor(
215 annotations, m_member.name, m_member.desc, (ClassLoader ) m_loaderRef.get()
216 ),
217 Attributes.getDefaultAttributes(),
218 true
219 );
220 m_annotations = annotations;
221 } catch (IOException e) {
222 System.err.println(
224 "WARN - could not load " + m_declaringTypeName + " as a resource to retrieve annotations"
225 );
226 m_annotations = AsmClassInfo.EMPTY_LIST;
227 }
228 }
229 return m_annotations;
230 }
231
232 public boolean equals(Object o) {
233 if (this == o) {
234 return true;
235 }
236 if (!(o instanceof MethodInfo)) {
237 return false;
238 }
239 MethodInfo methodInfo = (MethodInfo) o;
240 if (!m_declaringTypeName.equals(methodInfo.getDeclaringType().getName())) {
241 return false;
242 }
243 if (!m_member.name.equals(methodInfo.getName())) {
244 return false;
245 }
246 ClassInfo[] parameterTypes = methodInfo.getParameterTypes();
247 if (m_parameterTypeNames.length != parameterTypes.length) { return false;
249 }
250 for (int i = 0; i < m_parameterTypeNames.length; i++) {
251 if (!m_parameterTypeNames[i].equals(parameterTypes[i].getName())) {
252 return false;
253 }
254 }
255 return true;
256 }
257
258 public int hashCode() {
259 int result = 29;
260 result = (29 * result) + m_declaringTypeName.hashCode();
261 result = (29 * result) + m_member.name.hashCode();
262 for (int i = 0; i < m_parameterTypeNames.length; i++) {
263 result = (29 * result) + m_parameterTypeNames[i].hashCode();
264 }
265 return result;
266 }
267
268 public String toString() {
269 StringBuffer sb = new StringBuffer (m_declaringTypeName);
270 sb.append('.').append(m_member.name);
271 sb.append(m_member.desc);
272 return sb.toString();
273 }
274
275
282 public void pushParameterNameFromRegister(int registerIndex, String parameterName) {
283 int registerStart = 1;
284 if (Modifier.isStatic(m_member.modifiers)) {
285 registerStart = 0;
286 }
287 int registerIndexFrom0 = registerIndex - registerStart;
289 Type[] parameters = Type.getArgumentTypes(m_member.desc);
290 int typeIndex = AsmHelper.getTypeIndexOf(parameters, registerIndexFrom0);
291 if (typeIndex >= 0 && typeIndex < m_parameterNames.length) {
292 m_parameterNames[typeIndex] = parameterName;
293 } else {
294 throw new DefinitionException("Could not register parameter named " + parameterName
295 + " from register " + registerIndex + " for " + m_member.name + "." + m_member.desc);
296 }
297 }
298 } |
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