129 lines
3.0 KiB
Python
129 lines
3.0 KiB
Python
from collections.abc import Callable
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from typing import (
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Any,
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Generic,
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Optional,
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Type,
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TypeVar,
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Union,
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final,
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overload,
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)
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import yaml
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from mashumaro.codecs._builder import CodecCodeBuilder
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from mashumaro.core.meta.helpers import get_args
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from mashumaro.dialect import Dialect
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T = TypeVar("T")
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EncodedData = Union[str, bytes]
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PostEncoderFunc = Callable[[Any], EncodedData]
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PreDecoderFunc = Callable[[EncodedData], Any]
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DefaultLoader = getattr(yaml, "CSafeLoader", yaml.SafeLoader)
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DefaultDumper = getattr(yaml, "CDumper", yaml.Dumper)
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def _default_encoder(data: Any) -> EncodedData:
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return yaml.dump(data, Dumper=DefaultDumper)
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def _default_decoder(data: EncodedData) -> Any:
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return yaml.load(data, DefaultLoader)
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class YAMLDecoder(Generic[T]):
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@overload
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def __init__(
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self,
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shape_type: Type[T],
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*,
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default_dialect: Optional[Type[Dialect]] = None,
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pre_decoder_func: Optional[PreDecoderFunc] = _default_decoder,
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): ...
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@overload
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def __init__(
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self,
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shape_type: Any,
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*,
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default_dialect: Optional[Type[Dialect]] = None,
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pre_decoder_func: Optional[PreDecoderFunc] = _default_decoder,
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): ...
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def __init__(
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self,
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shape_type: Union[Type[T], Any],
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*,
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default_dialect: Optional[Type[Dialect]] = None,
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pre_decoder_func: Optional[PreDecoderFunc] = _default_decoder,
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):
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code_builder = CodecCodeBuilder.new(
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type_args=get_args(shape_type), default_dialect=default_dialect
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)
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code_builder.add_decode_method(shape_type, self, pre_decoder_func)
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@final
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def decode(self, data: EncodedData) -> T: ...
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class YAMLEncoder(Generic[T]):
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@overload
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def __init__(
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self,
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shape_type: Type[T],
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*,
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default_dialect: Optional[Type[Dialect]] = None,
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post_encoder_func: Optional[PostEncoderFunc] = _default_encoder,
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): ...
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@overload
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def __init__(
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self,
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shape_type: Any,
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*,
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default_dialect: Optional[Type[Dialect]] = None,
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post_encoder_func: Optional[PostEncoderFunc] = _default_encoder,
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): ...
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def __init__(
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self,
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shape_type: Union[Type[T], Any],
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*,
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default_dialect: Optional[Type[Dialect]] = None,
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post_encoder_func: Optional[PostEncoderFunc] = _default_encoder,
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):
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code_builder = CodecCodeBuilder.new(
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type_args=get_args(shape_type), default_dialect=default_dialect
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)
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code_builder.add_encode_method(shape_type, self, post_encoder_func)
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@final
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def encode(self, obj: T) -> EncodedData: ...
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def yaml_decode(data: EncodedData, shape_type: Union[Type[T], Any]) -> T:
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return YAMLDecoder(shape_type).decode(data)
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def yaml_encode(obj: T, shape_type: Union[Type[T], Any]) -> EncodedData:
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return YAMLEncoder(shape_type).encode(obj)
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decode = yaml_decode
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encode = yaml_encode
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__all__ = [
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"YAMLDecoder",
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"YAMLEncoder",
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"yaml_decode",
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"yaml_encode",
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"decode",
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"encode",
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]
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