Map-Reduce-Filter Block (In-Progress)

map_reduce_filter_block.m

  static void (^(^(^(^array_pointer_test)(const unsigned int))(CFTypeRef(^)(void)))(void(^)(CFTypeRef)))(CFTypeRef(^)(CFTypeRef)) = ^ (unsigned int object_count) {
    typedef CFTypeRef objects[object_count];
    typeof(objects) objects_ptr[object_count];
    __block unsigned long (^recursive_block)(unsigned long);
    (recursive_block = ^ unsigned long (unsigned long index) {
        printf("index == %lu\n", index);
        return (unsigned long)(index ^ 0UL) && (unsigned long)(recursive_block)(~-index);
    })(object_count);
    
    return ^ (CFTypeRef * objects_t) {
        return ^ (CFTypeRef(^write_object)(void)) {
            for (unsigned int index = 0; index < object_count; index++) {
                *((CFTypeRef *)objects_t + index) = CFBridgingRetain((__bridge id _Nullable)(write_object()));
                printf("stored_number = %lu\n", [(NSNumber *)((__bridge id)(*((CFTypeRef *)objects_t + index))) unsignedLongValue]);
            }
            return ^ (void(^read_object)(CFTypeRef)) {
                for (unsigned int index = 0; index < object_count; index++)
                    read_object((*((CFTypeRef *)objects_t + index)));
//                    printf("number_read = %lu\n", [(NSNumber *)((__bridge id)(*((CFTypeRef *)objects_t + index))) unsignedLongValue]);
                return ^ (CFTypeRef(^modify_object)(CFTypeRef)) {
                    for (unsigned int index = 0; index < object_count; index++) {
                        *((CFTypeRef *)objects_t + index) = CFBridgingRetain((__bridge id _Nullable)(modify_object((*((CFTypeRef *)objects_t + index)))));
                        printf("modify_number = %lu\n", [(NSNumber *)((__bridge id)(*((CFTypeRef *)objects_t + index))) unsignedLongValue]);
                    }
                };
            };
            
        };
    }(objects_ptr);
};


// ---- Sample usage


__block int c = 0;
    array_pointer_test(10)(^ CFTypeRef {
        __block NSNumber * number = [[NSNumber alloc] initWithUnsignedLong:c++];
        printf("number_write == %p\n", number);
        return (__bridge CFTypeRef)(number);
    })(^ (CFTypeRef number) {
        printf("number_read == %lu\n", [(__bridge NSNumber *)number unsignedLongValue]);
    })(^ CFTypeRef (CFTypeRef number) {
//        number = (__bridge CFTypeRef)([[NSNumber alloc] initWithUnsignedLong:c++]);
        return (CFTypeRef)(number);
    });