mirror of
https://github.com/aljazceru/bitfinex-api-py.git
synced 2025-12-19 14:54:21 +01:00
88 lines
3.4 KiB
Python
88 lines
3.4 KiB
Python
from typing import Type, Generic, TypeVar, Iterable, Optional, Dict, List, Tuple, Any, cast
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from .exceptions import LabelerSerializerException
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T = TypeVar("T", bound="_Type")
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def compose(*decorators):
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def wrapper(function):
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for decorator in reversed(decorators):
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function = decorator(function)
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return function
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return wrapper
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def partial(cls):
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def __init__(self, **kwargs):
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for annotation in self.__annotations__.keys():
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if annotation not in kwargs:
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self.__setattr__(annotation, None)
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else: self.__setattr__(annotation, kwargs[annotation])
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kwargs.pop(annotation, None)
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if len(kwargs) != 0:
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raise TypeError(f"{cls.__name__}.__init__() got an unexpected keyword argument '{list(kwargs.keys())[0]}'")
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cls.__init__ = __init__
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return cls
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class _Type:
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"""
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Base class for any dataclass serializable by the _Serializer generic class.
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"""
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class _Serializer(Generic[T]):
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def __init__(self, name: str, klass: Type[_Type], labels: List[str],
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*, ignore: List[str] = [ "_PLACEHOLDER" ]):
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self.name, self.klass, self.__labels, self.__ignore = name, klass, labels, ignore
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def _serialize(self, *args: Any, skip: Optional[List[str]] = None) -> Iterable[Tuple[str, Any]]:
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labels, skips = [], []
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for label in self.__labels:
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(labels, skips)[label in (skip or [])].append(label)
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if len(labels) > len(args):
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raise LabelerSerializerException(f"{self.name} -> <labels> and <*args> " \
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"arguments should contain the same amount of elements.")
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for index, label in enumerate(labels):
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if label not in self.__ignore:
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yield label, args[index]
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for skip in skips:
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yield skip, None
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def parse(self, *values: Any, skip: Optional[List[str]] = None) -> T:
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return cast(T, self.klass(**dict(self._serialize(*values, skip=skip))))
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def get_labels(self) -> List[str]:
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return [ label for label in self.__labels if label not in self.__ignore ]
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class _RecursiveSerializer(_Serializer, Generic[T]):
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def __init__(self, name: str, klass: Type[_Type], labels: List[str],
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*, serializers: Dict[str, _Serializer[Any]], ignore: List[str] = ["_PLACEHOLDER"]):
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super().__init__(name, klass, labels, ignore = ignore)
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self.serializers = serializers
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def parse(self, *values: Any, skip: Optional[List[str]] = None) -> T:
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serialization = dict(self._serialize(*values, skip=skip))
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for key in serialization:
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if key in self.serializers.keys():
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serialization[key] = self.serializers[key].parse(*serialization[key], skip=skip)
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return cast(T, self.klass(**serialization))
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def generate_labeler_serializer(name: str, klass: Type[T], labels: List[str],
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*, ignore: List[str] = [ "_PLACEHOLDER" ]) -> _Serializer[T]:
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return _Serializer[T](name, klass, labels, ignore=ignore)
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def generate_recursive_serializer(name: str, klass: Type[T], labels: List[str],
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*, serializers: Dict[str, _Serializer[Any]], ignore: List[str] = [ "_PLACEHOLDER" ]
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) -> _RecursiveSerializer[T]:
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return _RecursiveSerializer[T](name, klass, labels, serializers=serializers, ignore=ignore)
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