"""Preconfigured converters for pyyaml."""
from datetime import date, datetime
from functools import partial
from typing import Any, Type, TypeVar, Union
from yaml import safe_dump, safe_load
from .._compat import FrozenSetSubscriptable
from ..converters import BaseConverter, Converter
from ..strategies import configure_union_passthrough
from ..tuples import is_namedtuple, namedtuple_unstructure_factory
from . import validate_datetime, wrap
T = TypeVar("T")
[docs]def validate_date(v, _):
if not isinstance(v, date):
raise ValueError(f"Expected date, got {v}")
return v
[docs]class PyyamlConverter(Converter):
[docs] def dumps(self, obj: Any, unstructure_as: Any = None, **kwargs: Any) -> str:
return safe_dump(self.unstructure(obj, unstructure_as=unstructure_as), **kwargs)
[docs] def loads(self, data: str, cl: Type[T]) -> T:
return self.structure(safe_load(data), cl)
[docs]@wrap(PyyamlConverter)
def make_converter(*args: Any, **kwargs: Any) -> PyyamlConverter:
kwargs["unstruct_collection_overrides"] = {
FrozenSetSubscriptable: list,
**kwargs.get("unstruct_collection_overrides", {}),
}
res = PyyamlConverter(*args, **kwargs)
configure_converter(res)
return res