Examples of net.sf.joafip.asm.MethodVisitor

net.sf.joafip.asm.MethodVisitor
A visitor to visit a Java method. The methods of this interface must be called in the following order: [ visitAnnotationDefault ] ( visitAnnotation | visitParameterAnnotation | visitAttribute )* [ visitCode ( visitFrame | visitXInsn | visitLabel | visitTryCatchBlock | visitLocalVariable | visitLineNumber)* visitMaxs ] visitEnd. In addition, the visitXInsn and visitLabel methods must be called in the sequential order of the bytecode instructions of the visited code, visitTryCatchBlock must be called before the labels passed as arguments have been visited, and the visitLocalVariable and visitLineNumber methods must be called after the labels passed as arguments have been visited. @author Eric Bruneton

    final String[] exceptions = new String[exceptionsClass.length];// NOPMD
    for (int index = 0; index < exceptionsClass.length; index++) {
      exceptions[index] = Type.getInternalName(exceptionsClass[index]);
    }


    MethodVisitor methodVisitor;
    methodVisitor = classWriter.visitMethod(
    /**/ACC_PUBLIC,
    /**/INIT_METHOD_NAME,
    /**/desc,
    /**/null/* signature */,
    /**/exceptions);


    methodVisitor.visitCode();


    methodVisitor.visitVarInsn(ALOAD, 0);


    methodVisitor.visitTypeInsn(NEW, PROXY_CALL_BACK);
    methodVisitor.visitInsn(DUP);
    methodVisitor.visitMethodInsn(INVOKESPECIAL, PROXY_CALL_BACK,
        INIT_METHOD_NAME, proxyCallBackConstructorDesc);


    methodVisitor.visitFieldInsn(
    /**/PUTFIELD,/* opcode */
        /**/classInternalName,/* owner */
        /**/PROXY_CALL_BACK_FIELD_NAME,/* name */
        /**/I_PROXY_CALL_BACK_DELEGATION_DESC);/* desc */


    methodVisitor.visitVarInsn(ALOAD, 0);
    final Class<?>[] parameterTypes = constructor.getParameterTypes();
    final int numberOfParams = parameterTypes.length;
    int paramSize = 0;
    for (int paramIndex = 0; paramIndex < numberOfParams; paramIndex++) {
      final Type type = Type.getType(parameterTypes[paramIndex]);
      final int opcode = type.getOpcode(ILOAD);
      methodVisitor.visitVarInsn(opcode, paramSize + 1);
      paramSize += type.getSize();
    }


    methodVisitor.visitMethodInsn(
    /**/INVOKESPECIAL,
    /**/superClassInternalName,
    /**/INIT_METHOD_NAME,
    /**/desc);


    methodVisitor.visitVarInsn(ALOAD, 0);
    methodVisitor.visitMethodInsn(
    /**/INVOKEVIRTUAL,
    /**/classInternalName,
    /**/CONSTRUCTOR_END_METHOD_NAME,
    /**/constructorEndMethodDesc);


    methodVisitor.visitInsn(RETURN);


    // FIXMELUC _visitmaxs call needed ?
    methodVisitor.visitMaxs(0, 0);
    methodVisitor.visitEnd();


  }

View Full Code Here


    /*
     * $proxyCallBack$ private field
     */
    FieldVisitor fieldVisitor;
    MethodVisitor methodVisitor;
    fieldVisitor = classWriter.visitField(
    /**/ACC_TRANSIENT,/* access */
        /**/PROXY_CALL_BACK_FIELD_NAME,/* name */
        /**/I_PROXY_CALL_BACK_DELEGATION_DESC,/* desc */
        /**/null,/* signature */
        /**/null/* value */);
    fieldVisitor.visitEnd();


    /*
     * setProxyCallBack method
     */
    methodVisitor = classWriter.visitMethod(
    /**/ACC_PUBLIC,
    /**/SET_PROXY_CALL_BACK_METHOD_NAME,
    /**/setProxyCallBackMethodDesc,
    /**/null,
    /**/null);
    methodVisitor.visitCode();


    methodVisitor.visitVarInsn(ALOAD, 0);
    methodVisitor.visitVarInsn(ALOAD, 1);
    methodVisitor.visitFieldInsn(
    /**/PUTFIELD,/* opcode */
        /**/classInternalName,/* owner */
        /**/PROXY_CALL_BACK_FIELD_NAME,/* name */
        /**/I_PROXY_CALL_BACK_DELEGATION_DESC);/* desc */


    methodVisitor.visitInsn(RETURN);


    methodVisitor.visitMaxs(0, 0);
    methodVisitor.visitEnd();


    /*
     * getProxyCallBack
     */
    methodVisitor = classWriter.visitMethod(
    /**/ACC_PUBLIC,
    /**/GET_PROXY_CALL_BACK_METHOD_NAME,
    /**/getProxyCallBackMethodDesc,
    /**/null,
    /**/null);
    methodVisitor.visitCode();


    methodVisitor.visitVarInsn(ALOAD, 0);
    methodVisitor.visitFieldInsn(
    /**/GETFIELD,
    /**/classInternalName,
    /**/PROXY_CALL_BACK_FIELD_NAME,
    /**/I_PROXY_CALL_BACK_DELEGATION_DESC);
    methodVisitor.visitInsn(ARETURN);


    // FIXMELUC _visitmaxs call needed ?
    methodVisitor.visitMaxs(0, 0);
    methodVisitor.visitEnd();


    /*
     * forceLoad
     */
    methodVisitor = classWriter.visitMethod(
    /**/ACC_PUBLIC,
    /**/FORCE_LOAD_METHOD_NAME,
    /**/forceLoadMethodDesc,
    /**/null,
    /**/FORCE_LOAD_EXCEPTION);


    methodVisitor.visitCode();
    methodVisitor.visitVarInsn(ALOAD, 0);
    methodVisitor.visitFieldInsn(
    /**/GETFIELD,
    /**/classInternalName,
    /**/PROXY_CALL_BACK_FIELD_NAME,
    /**/I_PROXY_CALL_BACK_DELEGATION_DESC);
    methodVisitor.visitMethodInsn(
    /**/INVOKEINTERFACE,
    /**/I_PROXY_CALL_BACK_INTERFACE,
    /**/FORCE_LOAD_METHOD_NAME,
    /**/forceLoadMethodDesc);
    methodVisitor.visitInsn(RETURN);
    // FIXMELUC _visitmaxs call needed ?
    methodVisitor.visitMaxs(0, 0);
    methodVisitor.visitEnd();


    /*
     * unload
     */
    methodVisitor = classWriter.visitMethod(
    /**/ACC_PUBLIC,
    /**/UNLOAD_METHOD_NAME,
    /**/unloadMethodDesc,
    /**/null,
    /**/UNLOAD_EXCEPTION);


    methodVisitor.visitCode();


    methodVisitor.visitVarInsn(ALOAD, 0);
    methodVisitor.visitFieldInsn(
    /**/GETFIELD,
    /**/classInternalName,
    /**/PROXY_CALL_BACK_FIELD_NAME,
    /**/I_PROXY_CALL_BACK_DELEGATION_DESC);
    methodVisitor.visitMethodInsn(
    /**/INVOKEINTERFACE,
    /**/I_PROXY_CALL_BACK_INTERFACE,
    /**/UNLOAD_METHOD_NAME,
    /**/unloadMethodDesc);
    methodVisitor.visitInsn(RETURN);


    // FIXMELUC _visitmaxs call needed ?
    methodVisitor.visitMaxs(0, 0);
    methodVisitor.visitEnd();


    /*
     * intercept
     */
    methodVisitor = classWriter.visitMethod(
    /**/ACC_PUBLIC,
    /**/INTERCEPT_METHOD_NAME,
    /**/interceptMethodDesc,
    /**/null,
    /**/null);
    methodVisitor.visitCode();
    methodVisitor.visitVarInsn(ALOAD, 0);
    methodVisitor.visitFieldInsn(
    /**/GETFIELD,
    /**/classInternalName,
    /**/PROXY_CALL_BACK_FIELD_NAME,
    /**/I_PROXY_CALL_BACK_DELEGATION_DESC);
    methodVisitor.visitMethodInsn(
    /**/INVOKEINTERFACE,
    /**/I_PROXY_CALL_BACK_INTERFACE,
    /**/INTERCEPT_METHOD_NAME,
    /**/interceptMethodDesc);
    methodVisitor.visitInsn(RETURN);
    // FIXMELUC _visitmaxs call needed ?
    methodVisitor.visitMaxs(0, 0);
    methodVisitor.visitEnd();


    /*
     * constructor end
     */


    methodVisitor = classWriter.visitMethod(
    /**/ACC_PUBLIC,
    /**/CONSTRUCTOR_END_METHOD_NAME,
    /**/constructorEndMethodDesc,
    /**/null,
    /**/null);
    methodVisitor.visitCode();
    methodVisitor.visitVarInsn(ALOAD, 0);
    methodVisitor.visitFieldInsn(
    /**/GETFIELD,
    /**/classInternalName,
    /**/PROXY_CALL_BACK_FIELD_NAME,
    /**/I_PROXY_CALL_BACK_DELEGATION_DESC);
    methodVisitor.visitMethodInsn(
    /**/INVOKEINTERFACE,
    /**/I_PROXY_CALL_BACK_INTERFACE,
    /**/CONSTRUCTOR_END_METHOD_NAME,
    /**/constructorEndMethodDesc);
    methodVisitor.visitInsn(RETURN);
    // FIXMELUC _visitmaxs call needed ?
    methodVisitor.visitMaxs(0, 0);
    methodVisitor.visitEnd();


    /*
     * method end
     */


    methodVisitor = classWriter.visitMethod(
    /**/ACC_PUBLIC,
    /**/METHOD_END_METHOD_NAME,
    /**/methodEndMethodDesc,
    /**/null,
    /**/null);
    methodVisitor.visitCode();
    methodVisitor.visitVarInsn(ALOAD, 0);
    methodVisitor.visitFieldInsn(
    /**/GETFIELD,
    /**/classInternalName,
    /**/PROXY_CALL_BACK_FIELD_NAME,
    /**/I_PROXY_CALL_BACK_DELEGATION_DESC);
    methodVisitor.visitMethodInsn(
    /**/INVOKEINTERFACE,
    /**/I_PROXY_CALL_BACK_INTERFACE,
    /**/METHOD_END_METHOD_NAME,
    /**/methodEndMethodDesc);
    methodVisitor.visitInsn(RETURN);
    // FIXMELUC _visitmaxs call needed ?
    methodVisitor.visitMaxs(0, 0);
    methodVisitor.visitEnd();


    /*
     * isLoaded
     */
    methodVisitor = classWriter.visitMethod(
    /**/ACC_PUBLIC,
    /**/IS_LOADED_METHOD_NAME,
    /**/isLoadedMethodDesc,
    /**/null,
    /**/IS_LOADED_EXCEPTION);
    methodVisitor.visitCode();
    methodVisitor.visitVarInsn(ALOAD, 0);
    methodVisitor.visitFieldInsn(
    /**/GETFIELD,
    /**/classInternalName,
    /**/PROXY_CALL_BACK_FIELD_NAME,
    /**/I_PROXY_CALL_BACK_DELEGATION_DESC);
    methodVisitor.visitMethodInsn(
    /**/INVOKEINTERFACE,
    /**/I_PROXY_CALL_BACK_INTERFACE,
    /**/IS_LOADED_METHOD_NAME,
    /**/isLoadedMethodDesc);
    methodVisitor.visitInsn(IRETURN);
    // FIXMELUC _visitmaxs call needed ?
    methodVisitor.visitMaxs(0, 0);
    methodVisitor.visitEnd();


    /*
     * setIsLoaded
     */
    methodVisitor = classWriter.visitMethod(
    /**/ACC_PUBLIC,
    /**/SET_IS_LOADED_METHOD_NAME,
    /**/setIsLoadedMethodDesc,
    /**/null,
    /**/SET_IS_LOADED_EXCEPTION);
    methodVisitor.visitCode();
    methodVisitor.visitVarInsn(ALOAD, 0);
    methodVisitor.visitFieldInsn(
    /**/GETFIELD,
    /**/classInternalName,
    /**/PROXY_CALL_BACK_FIELD_NAME, I_PROXY_CALL_BACK_DELEGATION_DESC);
    methodVisitor.visitMethodInsn(
    /**/INVOKEINTERFACE,
    /**/I_PROXY_CALL_BACK_INTERFACE,
    /**/SET_IS_LOADED_METHOD_NAME,
    /**/setIsLoadedMethodDesc);
    methodVisitor.visitInsn(RETURN);
    // FIXMELUC _visitmaxs call needed ?
    methodVisitor.visitMaxs(0, 0);
    methodVisitor.visitEnd();


    /*
     * setIsLoadedNoSave
     */
    methodVisitor = classWriter.visitMethod(
    /**/ACC_PUBLIC,
    /**/SET_IS_LOADED_NO_SAVE_METHOD_NAME,
    /**/setIsLoadedNoSaveMethodDesc,
    /**/null,
    /**/null);
    methodVisitor.visitCode();
    methodVisitor.visitVarInsn(ALOAD, 0);
    methodVisitor.visitFieldInsn(
    /**/GETFIELD,
    /**/classInternalName,
    /**/PROXY_CALL_BACK_FIELD_NAME, I_PROXY_CALL_BACK_DELEGATION_DESC);
    methodVisitor.visitMethodInsn(
    /**/INVOKEINTERFACE,
    /**/I_PROXY_CALL_BACK_INTERFACE,
    /**/SET_IS_LOADED_NO_SAVE_METHOD_NAME,
    /**/setIsLoadedNoSaveMethodDesc);
    methodVisitor.visitInsn(RETURN);
    // FIXMELUC _visitmaxs call needed ?
    methodVisitor.visitMaxs(0, 0);
    methodVisitor.visitEnd();


    /*
     * setLoading
     */
    methodVisitor = classWriter.visitMethod(
    /**/ACC_PUBLIC,
    /**/SET_LOADING_METHOD_NAME,
    /**/setLoadingMethodDesc,
    /**/null,
    /**/null);
    methodVisitor.visitCode();
    methodVisitor.visitVarInsn(ALOAD, 0);
    methodVisitor.visitFieldInsn(
    /**/GETFIELD,
    /**/classInternalName,
    /**/PROXY_CALL_BACK_FIELD_NAME, I_PROXY_CALL_BACK_DELEGATION_DESC);
    methodVisitor.visitVarInsn(ILOAD, 1);
    methodVisitor.visitMethodInsn(
    /**/INVOKEINTERFACE,
    /**/I_PROXY_CALL_BACK_INTERFACE,
    /**/SET_LOADING_METHOD_NAME,
    /**/setLoadingMethodDesc);
    methodVisitor.visitInsn(RETURN);
    // FIXMELUC _visitmaxs call needed ?
    methodVisitor.visitMaxs(0, 0);
    methodVisitor.visitEnd();


    /*
     * getMyFileAccessSessionIdentifier
     */
    methodVisitor = classWriter.visitMethod(
    /**/ACC_PUBLIC,
    /**/GET_MY_FILE_ACCESS_SESSION_IDENTIFIER_METHOD_NAME,
    /**/getMyFileAccessSessionIdentifierClassDesc,
    /**/null,
    /**/null);
    methodVisitor.visitCode();
    methodVisitor.visitVarInsn(ALOAD, 0);
    methodVisitor.visitFieldInsn(
    /**/GETFIELD,
    /**/classInternalName,
    /**/PROXY_CALL_BACK_FIELD_NAME,
    /**/I_PROXY_CALL_BACK_DELEGATION_DESC);
    methodVisitor.visitMethodInsn(
    /**/INVOKEINTERFACE,
    /**/I_PROXY_CALL_BACK_INTERFACE,
    /**/GET_MY_FILE_ACCESS_SESSION_IDENTIFIER_METHOD_NAME,
    /**/getMyFileAccessSessionIdentifierClassDesc);
    methodVisitor.visitInsn(LRETURN);
    // FIXMELUC _visitmaxs call needed ?
    methodVisitor.visitMaxs(0, 0);
    methodVisitor.visitEnd();


    /*
     * getInstance$JOAFIP$
     */
    methodVisitor = classWriter.visitMethod(
    /**/ACC_PUBLIC,
    /**/GET_INSTANCE_METHOD_NAME,
    /**/getInstanceMethodDesc,
    /**/null,
    /**/null);
    methodVisitor.visitCode();
    methodVisitor.visitVarInsn(ALOAD, 0);
    methodVisitor.visitFieldInsn(
    /**/GETFIELD,
    /**/classInternalName,
    /**/PROXY_CALL_BACK_FIELD_NAME,
    /**/I_PROXY_CALL_BACK_DELEGATION_DESC);
    methodVisitor.visitMethodInsn(
    /**/INVOKEINTERFACE,
    /**/I_PROXY_CALL_BACK_INTERFACE,
    /**/GET_INSTANCE_METHOD_NAME,
    /**/getInstanceMethodDesc);
    methodVisitor.visitInsn(ARETURN);
    // FIXMELUC _visitmaxs call needed ?
    methodVisitor.visitMaxs(0, 0);
    methodVisitor.visitEnd();


  }

View Full Code Here

      final String classPackageName, final String superClassPackageName,
      final boolean overridePublicOnly) throws EnhanceException {
    final int methodModifiers = method.getModifiers();
    if (checkAccess(overridePublicOnly, method, methodModifiers,
        classPackageName, superClassPackageName)) {
      MethodVisitor methodVisitor;
      final String desc = Type.getMethodDescriptor(method);
      final Class<?>[] exceptionsClass = method.getExceptionTypes();
      final String[] exceptions = new String[exceptionsClass.length];// NOPMD
      for (int index = 0; index < exceptionsClass.length; index++) {
        exceptions[index] = Type
            .getInternalName(exceptionsClass[index]);
      }


      // final int access =
      // /**/(Modifier.isPublic(method.getModifiers()) ? ACC_PUBLIC : 0)
      // /**/| (Modifier.isStrict(method.getModifiers()) ? ACC_STRICT
      // : 0)
      // /**/| (Modifier.isSynchronized(method.getModifiers()) ?
      // ACC_SYNCHRONIZED
      // : 0);
      // final int access =method.getModifiers();
      final String methodName = method.getName();
      assert !Modifier.isPrivate(methodModifiers) : "method "
          + superClassInternalName + "#" + methodName
          + " must not be private and is: "
          + Modifier.toString(methodModifiers);
      // always public even if super method is not public
      final int access = ACC_PUBLIC;
      // final int access = computeAccess(method);
      methodVisitor = classWriter.visitMethod(
      /**/access,
      /**/methodName,
      /**/desc,
      /**/null,
      /**/exceptions);


      methodVisitor.visitCode();


      methodVisitor.visitVarInsn(ALOAD, 0);
      methodVisitor.visitMethodInsn(
      /**/INVOKEVIRTUAL,
      /**/classInternalName,
      /**/INTERCEPT_METHOD_NAME,
      /**/interceptMethodDesc);


      methodVisitor.visitVarInsn(ALOAD, 0);
      final Class<?>[] parameterTypes = method.getParameterTypes();
      final int numberOfParams = parameterTypes.length;
      int paramSize = 0;
      for (int paramIndex = 0; paramIndex < numberOfParams; paramIndex++) {
        final Type type = Type.getType(parameterTypes[paramIndex]);
        final int opcode = type.getOpcode(ILOAD);
        methodVisitor.visitVarInsn(opcode, paramSize + 1);
        paramSize += type.getSize();
      }
      final Type returnType = Type.getReturnType(method);


      methodVisitor.visitMethodInsn(
      /**/INVOKESPECIAL,
      /**/superClassInternalName,
      /**/methodName,
      /**/desc);


      final int opcode = returnType.getOpcode(IRETURN);
      methodVisitor.visitInsn(opcode);


      // FIXMELUC _visitmaxs call needed ?
      methodVisitor.visitMaxs(0, 0);
      methodVisitor.visitEnd();
    }
  }

View Full Code Here

      final boolean overridePublicOnly) throws EnhanceException {
    final int methodModifiers = method.getModifiers();
    if (checkAccess(overridePublicOnly, method, methodModifiers,
        classPackageName, superClassPackageName)) {


      MethodVisitor methodVisitor;
      final String desc = Type.getMethodDescriptor(method);
      final Class<?>[] exceptionsClass = method.getExceptionTypes();
      final String[] exceptions = new String[exceptionsClass.length];// NOPMD
      for (int index = 0; index < exceptionsClass.length; index++) {
        exceptions[index] = Type
            .getInternalName(exceptionsClass[index]);
      }


      // final int access =
      // /**/(Modifier.isPublic(method.getModifiers()) ? ACC_PUBLIC : 0)
      // /**/| (Modifier.isStrict(method.getModifiers()) ? ACC_STRICT
      // : 0)
      // /**/| (Modifier.isSynchronized(method.getModifiers()) ?
      // ACC_SYNCHRONIZED
      // : 0);
      // // final int access =ACC_PUBLIC;
      // // final int access =method.getModifiers();
      final String methodName = method.getName();
      assert !Modifier.isPrivate(methodModifiers) : "method "
          + superClassInternalName + "#" + methodName
          + " must not be private and is: "
          + Modifier.toString(methodModifiers);
      // always public even if super method is not public
      final int access = ACC_PUBLIC;
      // final int access = computeAccess(method);
      methodVisitor = classWriter.visitMethod(
      /**/access,
      /**/methodName,
      /**/desc,
      /**/null,
      /**/exceptions);


      methodVisitor.visitCode();


      final Label label0 = new Label();
      final Label label1 = new Label();
      final Label label2 = new Label();
      methodVisitor.visitTryCatchBlock(label0, label1, label2, null);


      methodVisitor.visitLabel(label0);
      methodVisitor.visitVarInsn(ALOAD, 0);
      methodVisitor.visitMethodInsn(
      /**/INVOKEVIRTUAL,
      /**/classInternalName,
      /**/INTERCEPT_METHOD_NAME,
      /**/interceptMethodDesc);


      methodVisitor.visitVarInsn(ALOAD, 0);
      final Class<?>[] parameterTypes = method.getParameterTypes();
      final int numberOfParams = parameterTypes.length;
      int paramSize = 0;
      for (int paramIndex = 0; paramIndex < numberOfParams; paramIndex++) {
        final Type type = Type.getType(parameterTypes[paramIndex]);
        final int opcode = type.getOpcode(ILOAD);
        methodVisitor.visitVarInsn(opcode, paramSize + 1);
        paramSize += type.getSize();
      }
      final Type returnType = Type.getReturnType(method);


      methodVisitor.visitMethodInsn(
      /**/INVOKESPECIAL,
      /**/superClassInternalName,
      /**/methodName,
      /**/desc);


      methodVisitor.visitLabel(label1);


      int opcode;
      if (!Type.VOID_TYPE.equals(returnType)) {
        opcode = returnType.getOpcode(ISTORE);
        methodVisitor.visitVarInsn(opcode, paramSize + 1);
      }


      methodVisitor.visitVarInsn(ALOAD, 0);
      methodVisitor.visitMethodInsn(
      /**/INVOKEVIRTUAL,
      /**/classInternalName,
      /**/METHOD_END_METHOD_NAME,
      /**/methodEndMethodDesc);


      if (!Type.VOID_TYPE.equals(returnType)) {
        opcode = returnType.getOpcode(ILOAD);
        methodVisitor.visitVarInsn(opcode, paramSize + 1);
      }


      opcode = returnType.getOpcode(IRETURN);
      methodVisitor.visitInsn(opcode);


      // finally block
      methodVisitor.visitLabel(label2);
      methodVisitor.visitVarInsn(ASTORE, 1);


      methodVisitor.visitVarInsn(ALOAD, 0);
      methodVisitor.visitMethodInsn(
      /**/INVOKEVIRTUAL,
      /**/classInternalName,
      /**/METHOD_END_METHOD_NAME,
      /**/methodEndMethodDesc);


      methodVisitor.visitVarInsn(ALOAD, 1);
      methodVisitor.visitInsn(ATHROW);


      // FIXMELUC _visitmaxs call needed ?
      methodVisitor.visitMaxs(0, 0);
      methodVisitor.visitEnd();
    }
  }

View Full Code Here

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