67 lines
2.4 KiB
Python
67 lines
2.4 KiB
Python
"""Preconfigured converters for ujson."""
|
|
|
|
from base64 import b85decode, b85encode
|
|
from collections.abc import Set
|
|
from datetime import date, datetime
|
|
from typing import Any, AnyStr, TypeVar, Union
|
|
|
|
from ujson import dumps, loads
|
|
|
|
from ..converters import BaseConverter, Converter
|
|
from ..fns import identity
|
|
from ..literals import is_literal_containing_enums
|
|
from ..strategies import configure_union_passthrough
|
|
from . import is_primitive_enum, literals_with_enums_unstructure_factory, wrap
|
|
|
|
__all__ = ["UjsonConverter", "configure_converter", "make_converter"]
|
|
|
|
T = TypeVar("T")
|
|
|
|
|
|
class UjsonConverter(Converter):
|
|
def dumps(self, obj: Any, unstructure_as: Any = None, **kwargs: Any) -> str:
|
|
return dumps(self.unstructure(obj, unstructure_as=unstructure_as), **kwargs)
|
|
|
|
def loads(self, data: AnyStr, cl: type[T], **kwargs: Any) -> T:
|
|
return self.structure(loads(data, **kwargs), cl)
|
|
|
|
|
|
def configure_converter(converter: BaseConverter):
|
|
"""
|
|
Configure the converter for use with the ujson library.
|
|
|
|
* bytes are serialized as base64 strings
|
|
* datetimes are serialized as ISO 8601
|
|
* sets are serialized as lists
|
|
* string and int enums are passed through when unstructuring
|
|
|
|
.. versionchanged:: 24.2.0
|
|
Enums are left to the library to unstructure, speeding them up.
|
|
"""
|
|
converter.register_unstructure_hook(
|
|
bytes, lambda v: (b85encode(v) if v else b"").decode("utf8")
|
|
)
|
|
converter.register_structure_hook(bytes, lambda v, _: b85decode(v))
|
|
|
|
converter.register_unstructure_hook(datetime, lambda v: v.isoformat())
|
|
converter.register_structure_hook(datetime, lambda v, _: datetime.fromisoformat(v))
|
|
converter.register_unstructure_hook(date, lambda v: v.isoformat())
|
|
converter.register_structure_hook(date, lambda v, _: date.fromisoformat(v))
|
|
converter.register_unstructure_hook_func(is_primitive_enum, identity)
|
|
converter.register_unstructure_hook_factory(
|
|
is_literal_containing_enums, literals_with_enums_unstructure_factory
|
|
)
|
|
configure_union_passthrough(Union[str, bool, int, float, None], converter)
|
|
|
|
|
|
@wrap(UjsonConverter)
|
|
def make_converter(*args: Any, **kwargs: Any) -> UjsonConverter:
|
|
kwargs["unstruct_collection_overrides"] = {
|
|
Set: list,
|
|
**kwargs.get("unstruct_collection_overrides", {}),
|
|
}
|
|
res = UjsonConverter(*args, **kwargs)
|
|
configure_converter(res)
|
|
|
|
return res
|