Package org.apache.xbean.asm

Examples of org.apache.xbean.asm.MethodVisitor


        mv.visitMaxs(0, 1);
        mv.visitEnd();
    }

    public void createEjbLoad() {
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "ejbLoad", "()V", null, null);
        mv.visitCode();
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 1);
        mv.visitEnd();
    }
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        mv.visitMaxs(0, 1);
        mv.visitEnd();
    }

    public void createEjbPassivate() {
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "ejbPassivate", "()V", null, null);
        mv.visitCode();
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 1);
        mv.visitEnd();
    }
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        mv.visitMaxs(0, 1);
        mv.visitEnd();
    }

    public void createEjbRemove() {
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "ejbRemove", "()V", null, null);
        mv.visitCode();
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 1);
        mv.visitEnd();
    }
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        mv.visitMaxs(0, 1);
        mv.visitEnd();
    }

    public void createEjbStore() {
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "ejbStore", "()V", null, null);
        mv.visitCode();
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 1);
        mv.visitEnd();
    }
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        mv.visitMaxs(0, 1);
        mv.visitEnd();
    }

    public void createSetEntityContext() {
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "setEntityContext", "(Ljavax/ejb/EntityContext;)V", null, null);
        mv.visitCode();
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 2);
        mv.visitEnd();
    }
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        mv.visitMaxs(0, 2);
        mv.visitEnd();
    }

    public void createUnsetEntityContext() {
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "unsetEntityContext", "()V", null, null);
        mv.visitCode();
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 1);
        mv.visitEnd();
    }
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                exceptionTypeNames[i] = Type.getType(exceptionTypes[i]).getInternalName();
            }

            int targetModifiers = delegatedMethod.getModifiers() & (Modifier.PROTECTED | Modifier.PUBLIC);

            MethodVisitor mv = cw.visitMethod(targetModifiers, delegatedMethod.getName(), methodDescriptor, null, exceptionTypeNames);

            // fill method body
            mv.visitCode();

            // load the contextual instance Provider
            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitFieldInsn(Opcodes.GETFIELD, proxyClassFileName, FIELD_INSTANCE_PROVIDER, Type.getDescriptor(Provider.class));

            // invoke the get() method on the Provider
            mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, Type.getInternalName(Provider.class), "get", "()Ljava/lang/Object;");

            // and convert the Object to the target class type
            mv.visitTypeInsn(Opcodes.CHECKCAST, Type.getInternalName(classToProxy));


            // now calculate the parameters
            int offset = 1;
            for (Class<?> aClass : delegatedMethod.getParameterTypes())
            {
                final Type type = Type.getType(aClass);
                mv.visitVarInsn(type.getOpcode(Opcodes.ILOAD), offset);
                offset += type.getSize();
            }

            // and finally invoke the target method on the provided Contextual Instance
            final Type declaringClass = Type.getType(delegatedMethod.getDeclaringClass());
            boolean interfaceMethod = Modifier.isInterface(delegatedMethod.getDeclaringClass().getModifiers());
            mv.visitMethodInsn(interfaceMethod ? Opcodes.INVOKEINTERFACE : Opcodes.INVOKEVIRTUAL,
                               declaringClass.getInternalName(), delegatedMethod.getName(), methodDescriptor);

            generateReturn(mv, delegatedMethod);

            mv.visitMaxs(-1, -1);

            mv.visitEnd();
        }

    }
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        final int modifiers = method.getModifiers();

        // push the method definition
        int modifier = modifiers & (Opcodes.ACC_PUBLIC | Opcodes.ACC_PROTECTED);

        MethodVisitor mv = cw.visitMethod(modifier, method.getName(), Type.getMethodDescriptor(method), null, null);
        mv.visitCode();


        mv.visitVarInsn(Opcodes.ALOAD, 0);

        // add the Method from the static array as first parameter
        mv.visitFieldInsn(Opcodes.GETSTATIC, proxyClassFileName, FIELD_PROTECTED_METHODS, Type.getDescriptor(Method[].class));

        // push the methodIndex of the current method
        mv.visitIntInsn(Opcodes.BIPUSH, methodIndex);

        // and now load the Method from the array
        mv.visitInsn(Opcodes.AALOAD);


        // now invoke the get() on the contextual instance Provider<T>
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitFieldInsn(Opcodes.GETFIELD, proxyClassFileName, FIELD_INSTANCE_PROVIDER, Type.getDescriptor(Provider.class));

        // invoke the get() method on the Provider
        mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, Type.getInternalName(Provider.class), "get", "()Ljava/lang/Object;");


        // prepare the parameter array as Object[] and store it on the stack
        pushMethodParameterArray(mv, parameterTypes);


        // this invokes NormalScopeProxyFactory.delegateProtectedMethod
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(NormalScopeProxyFactory.class), "delegateProtectedMethod",
                "(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;");

        // cast the result
        mv.visitTypeInsn(Opcodes.CHECKCAST, getCastType(returnType));


        if (returnType.isPrimitive() && (!Void.TYPE.equals(returnType)))
        {
            // get the primitive value
            mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, getWrapperType(returnType), getPrimitiveMethod(returnType),
                    "()" + Type.getDescriptor(returnType));
        }

        mv.visitInsn(getReturnInsn(returnType));

        // finish this method
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
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    @Override
    protected void createSerialisation(ClassWriter cw, String proxyClassFileName, Class<?> classToProxy, String classFileName)
    {
        String[] exceptionTypeNames = {Type.getType(ObjectStreamException.class).getInternalName()};
        MethodVisitor mv = cw.visitMethod(Modifier.PUBLIC, "writeReplace", "()Ljava/lang/Object;", null, exceptionTypeNames);

        // fill method body
        mv.visitCode();

        // load the contextual instance Provider
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitFieldInsn(Opcodes.GETFIELD, proxyClassFileName, FIELD_INTERCEPTOR_HANDLER, Type.getDescriptor(InterceptorHandler.class));

        mv.visitInsn(Opcodes.ARETURN);

        mv.visitMaxs(-1, -1);
        mv.visitEnd();
    }
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        try
        {
            Constructor superDefaultCt = classToProxy.getDeclaredConstructor(null);

            final String descriptor = Type.getConstructorDescriptor(superDefaultCt);
            final MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", descriptor, null, null);
            mv.visitCode();
            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitMethodInsn(Opcodes.INVOKESPECIAL, classFileName, "<init>", descriptor);

            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitInsn(Opcodes.ACONST_NULL);
            mv.visitFieldInsn(Opcodes.PUTFIELD, proxyClassFileName, FIELD_PROXIED_INSTANCE, Type.getDescriptor(classToProxy));

            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitInsn(Opcodes.ACONST_NULL);
            mv.visitFieldInsn(Opcodes.PUTFIELD, proxyClassFileName, FIELD_INTERCEPTOR_HANDLER, Type.getDescriptor(InterceptorHandler.class));

            mv.visitInsn(Opcodes.RETURN);
            mv.visitMaxs(-1, -1);
            mv.visitEnd();
        }
        catch (NoSuchMethodException e)
        {
            throw new ProxyGenerationException(e);
        }
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