flex/interactive/sdk/master/gs_interactive_admin/util.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Copyright 2020 Alibaba Group Holding Limited. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import datetime
import typing

from gs_interactive_admin import typing_utils


def _deserialize(data, klass):
    """Deserializes dict, list, str into an object.

    :param data: dict, list or str.
    :param klass: class literal, or string of class name.

    :return: object.
    """
    if data is None:
        return None

    if klass in (int, float, str, bool, bytearray):
        return _deserialize_primitive(data, klass)
    elif klass == object:
        return _deserialize_object(data)
    elif klass == datetime.date:
        return deserialize_date(data)
    elif klass == datetime.datetime:
        return deserialize_datetime(data)
    elif typing_utils.is_generic(klass):
        if typing_utils.is_list(klass):
            return _deserialize_list(data, klass.__args__[0])
        if typing_utils.is_dict(klass):
            return _deserialize_dict(data, klass.__args__[1])
    else:
        return deserialize_model(data, klass)


def _deserialize_primitive(data, klass):
    """Deserializes to primitive type.

    :param data: data to deserialize.
    :param klass: class literal.

    :return: int, long, float, str, bool.
    :rtype: int | long | float | str | bool
    """
    try:
        value = klass(data)
    except UnicodeEncodeError:
        value = data
    except TypeError:
        value = data
    return value


def _deserialize_object(value):
    """Return an original value.

    :return: object.
    """
    return value


def deserialize_date(string):
    """Deserializes string to date.

    :param string: str.
    :type string: str
    :return: date.
    :rtype: date
    """
    if string is None:
        return None

    try:
        from dateutil.parser import parse

        return parse(string).date()
    except ImportError:
        return string


def deserialize_datetime(string):
    """Deserializes string to datetime.

    The string should be in iso8601 datetime format.

    :param string: str.
    :type string: str
    :return: datetime.
    :rtype: datetime
    """
    if string is None:
        return None

    try:
        from dateutil.parser import parse

        return parse(string)
    except ImportError:
        return string


def deserialize_model(data, klass):
    """Deserializes list or dict to model.

    :param data: dict, list.
    :type data: dict | list
    :param klass: class literal.
    :return: model object.
    """
    instance = klass()

    if not instance.openapi_types:
        return data

    for attr, attr_type in instance.openapi_types.items():
        if (
            data is not None
            and instance.attribute_map[attr] in data
            and isinstance(data, (list, dict))
        ):
            value = data[instance.attribute_map[attr]]
            setattr(instance, attr, _deserialize(value, attr_type))

    return instance


def _deserialize_list(data, boxed_type):
    """Deserializes a list and its elements.

    :param data: list to deserialize.
    :type data: list
    :param boxed_type: class literal.

    :return: deserialized list.
    :rtype: list
    """
    return [_deserialize(sub_data, boxed_type) for sub_data in data]


def _deserialize_dict(data, boxed_type):
    """Deserializes a dict and its elements.

    :param data: dict to deserialize.
    :type data: dict
    :param boxed_type: class literal.

    :return: deserialized dict.
    :rtype: dict
    """
    return {k: _deserialize(v, boxed_type) for k, v in data.items()}