def _encode_list()

in dubbo/codec/encoder.py [0:0]

• 38 lines of code
• 12 McCabe index (conditional complexity)

    def _encode_list(self, value):
        """
        对一个列表进行编码
        :param value:
        :return:
        """
        result = []
        length = len(value)
        if length == 0:
            # 没有值则无法判断类型，一律返回null
            return self._encode_single_value(None)
        if isinstance(value[0], bool):
            _type = '[boolean'
        elif isinstance(value[0], int):
            _type = '[int'
        elif isinstance(value[0], float):
            _type = '[double'
        elif isinstance(value[0], str):
            _type = '[string'
        elif isinstance(value[0], Object):
            _type = '[object'
        else:
            raise HessianTypeError('Unknown list type: {}'.format(value[0]))
        if length < 0x7:
            result.append(0x70 + length)
            if _type not in self.types:
                self.types.append(_type)
                result.extend(self._encode_single_value(_type))
            else:
                result.extend(self._encode_single_value(self.types.index(_type)))
        else:
            result.append(0x56)
            if _type not in self.types:
                self.types.append(_type)
                result.extend(self._encode_single_value(_type))
            else:
                result.extend(self._encode_single_value(self.types.index(_type)))
            result.extend(self._encode_single_value(length))
        for v in value:
            if type(value[0]) != type(v):
                raise HessianTypeError('All elements in list must be the same type, first type'
                                       ' is {0} but current type is {1}'.format(type(value[0]), type(v)))
            result.extend(self._encode_single_value(v))
        return result