mrdor44/stru

An IDE friendly alternative to Python's struct and construct

stru's Issues

struct subclasses cannot be decorated

When decorating a subclass of Struct with @dataclass or @attr.define, the following errors occur at Point's construction time: TypeError: TestSelf.test_pack_unpack.<locals>.Point.__init__() got an unexpected keyword argument 'x'

    def test_pack_unpack(self):
        class Point(Struct):
            """
            Semantic eq method is provided by Struct
            @attr.define -- does not play well with the super-class
            @dataclass -- does not play well with the super-class
            """
            _endianess = Endianess.LittleEndian
            x = FieldType.WORD
            y = FieldType.WORD
            name = FieldType.String[6]("NONAME")

        original_point = Point(x=1, y=2)
        packed_point = original_point.pack()
        assert_that(packed_point,
                    is_(b'\x01\x00\x02\x00NONAME'))

        unpacked_point = Point.unpack(packed_point)
        assert_that(unpacked_point,
                    is_(original_point))
        self.log().debug(unpacked_point)

mulitple inheritance does not work

    def should_pack_unpack(self):
        class LEStruct(Struct):
            _endianess = Endianess.LittleEndian

        class HasId(LEStruct):
            id = FieldType.WORD(default=0)

        class HasName(LEStruct):
            name = FieldType.String[6]("NONAME")

        # ISSUE paprika provided @to_string decorator fails when used
        # together with Struct super-class
        # @to_string
        # https://github.com/rayanht/paprika/issues/28#issuecomment-2212366362
        # ISSUE multiple inheritance does not work, only first member is
        # recognized

        class Point(HasName, HasId):
            """
            Semantic eq method is provided by Struct
            @attr.define -- does not play well with the super-class
            @dataclass -- does not play well with the super-class
            """
            x = FieldType.WORD
            y = FieldType.WORD

        @to_string
        class Point3D(Point):
            z = FieldType.WORD

        original_point = Point3D(x=1, y=2, z=3)
        packed_point = original_point.pack()
        # assert_that(packed_point,
        # is_(b'NONAME\x00\x00\x01\x00\x02\x00\x03\x00'))
        self.log.debug(packed_point)
        unpacked_point = Point3D.unpack(packed_point)

        self.log.debug(unpacked_point)
        assert_that(unpacked_point,
                    is_(original_point))