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https://github.com/aljazceru/bitfinex-api-py.git
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53 lines
2.4 KiB
Python
53 lines
2.4 KiB
Python
from .exceptions import LabelerSerializerException
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from typing import Type, Generic, TypeVar, Iterable, Optional, Dict, List, Tuple, Any, cast
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T = TypeVar("T", bound="_Type")
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class _Type(object):
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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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pass
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class _Serializer(Generic[T]):
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def __init__(self, name: str, klass: Type[_Type], labels: List[str], 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 = list(filter(lambda label: label not in (skip or list()), self.__labels))
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if len(labels) > len(args):
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raise LabelerSerializerException(f"{self.name} -> <labels> and <*args> 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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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], serializers: Dict[str, _Serializer[Any]], IGNORE: List[str] = ["_PLACEHOLDER"]):
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super().__init__(name, klass, labels, 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], IGNORE: List[str] = [ "_PLACEHOLDER" ]) -> _Serializer[T]:
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return _Serializer[T](name, klass, labels, IGNORE)
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def generate_recursive_serializer(name: str, klass: Type[T], labels: List[str], serializers: Dict[str, _Serializer[Any]], IGNORE: List[str] = [ "_PLACEHOLDER" ]) -> _RecursiveSerializer[T]:
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return _RecursiveSerializer[T](name, klass, labels, serializers, IGNORE) |