223 lines
6.2 KiB
Python
223 lines
6.2 KiB
Python
|
from __future__ import annotations
|
||
|
|
||
|
from typing import TYPE_CHECKING, Any, Union, Generic, TypeVar, Callable, cast, overload
|
||
|
from datetime import date, datetime
|
||
|
from typing_extensions import Self
|
||
|
|
||
|
import pydantic
|
||
|
from pydantic.fields import FieldInfo
|
||
|
|
||
|
from ._types import StrBytesIntFloat
|
||
|
|
||
|
_T = TypeVar("_T")
|
||
|
_ModelT = TypeVar("_ModelT", bound=pydantic.BaseModel)
|
||
|
|
||
|
# --------------- Pydantic v2 compatibility ---------------
|
||
|
|
||
|
# Pyright incorrectly reports some of our functions as overriding a method when they don't
|
||
|
# pyright: reportIncompatibleMethodOverride=false
|
||
|
|
||
|
PYDANTIC_V2 = pydantic.VERSION.startswith("2.")
|
||
|
|
||
|
# v1 re-exports
|
||
|
if TYPE_CHECKING:
|
||
|
|
||
|
def parse_date(value: date | StrBytesIntFloat) -> date: # noqa: ARG001
|
||
|
...
|
||
|
|
||
|
def parse_datetime(value: Union[datetime, StrBytesIntFloat]) -> datetime: # noqa: ARG001
|
||
|
...
|
||
|
|
||
|
def get_args(t: type[Any]) -> tuple[Any, ...]: # noqa: ARG001
|
||
|
...
|
||
|
|
||
|
def is_union(tp: type[Any] | None) -> bool: # noqa: ARG001
|
||
|
...
|
||
|
|
||
|
def get_origin(t: type[Any]) -> type[Any] | None: # noqa: ARG001
|
||
|
...
|
||
|
|
||
|
def is_literal_type(type_: type[Any]) -> bool: # noqa: ARG001
|
||
|
...
|
||
|
|
||
|
def is_typeddict(type_: type[Any]) -> bool: # noqa: ARG001
|
||
|
...
|
||
|
|
||
|
else:
|
||
|
if PYDANTIC_V2:
|
||
|
from pydantic.v1.typing import (
|
||
|
get_args as get_args,
|
||
|
is_union as is_union,
|
||
|
get_origin as get_origin,
|
||
|
is_typeddict as is_typeddict,
|
||
|
is_literal_type as is_literal_type,
|
||
|
)
|
||
|
from pydantic.v1.datetime_parse import parse_date as parse_date, parse_datetime as parse_datetime
|
||
|
else:
|
||
|
from pydantic.typing import (
|
||
|
get_args as get_args,
|
||
|
is_union as is_union,
|
||
|
get_origin as get_origin,
|
||
|
is_typeddict as is_typeddict,
|
||
|
is_literal_type as is_literal_type,
|
||
|
)
|
||
|
from pydantic.datetime_parse import parse_date as parse_date, parse_datetime as parse_datetime
|
||
|
|
||
|
|
||
|
# refactored config
|
||
|
if TYPE_CHECKING:
|
||
|
from pydantic import ConfigDict as ConfigDict
|
||
|
else:
|
||
|
if PYDANTIC_V2:
|
||
|
from pydantic import ConfigDict
|
||
|
else:
|
||
|
# TODO: provide an error message here?
|
||
|
ConfigDict = None
|
||
|
|
||
|
|
||
|
# renamed methods / properties
|
||
|
def parse_obj(model: type[_ModelT], value: object) -> _ModelT:
|
||
|
if PYDANTIC_V2:
|
||
|
return model.model_validate(value)
|
||
|
else:
|
||
|
return cast(_ModelT, model.parse_obj(value)) # pyright: ignore[reportDeprecated, reportUnnecessaryCast]
|
||
|
|
||
|
|
||
|
def field_is_required(field: FieldInfo) -> bool:
|
||
|
if PYDANTIC_V2:
|
||
|
return field.is_required()
|
||
|
return field.required # type: ignore
|
||
|
|
||
|
|
||
|
def field_get_default(field: FieldInfo) -> Any:
|
||
|
value = field.get_default()
|
||
|
if PYDANTIC_V2:
|
||
|
from pydantic_core import PydanticUndefined
|
||
|
|
||
|
if value == PydanticUndefined:
|
||
|
return None
|
||
|
return value
|
||
|
return value
|
||
|
|
||
|
|
||
|
def field_outer_type(field: FieldInfo) -> Any:
|
||
|
if PYDANTIC_V2:
|
||
|
return field.annotation
|
||
|
return field.outer_type_ # type: ignore
|
||
|
|
||
|
|
||
|
def get_model_config(model: type[pydantic.BaseModel]) -> Any:
|
||
|
if PYDANTIC_V2:
|
||
|
return model.model_config
|
||
|
return model.__config__ # type: ignore
|
||
|
|
||
|
|
||
|
def get_model_fields(model: type[pydantic.BaseModel]) -> dict[str, FieldInfo]:
|
||
|
if PYDANTIC_V2:
|
||
|
return model.model_fields
|
||
|
return model.__fields__ # type: ignore
|
||
|
|
||
|
|
||
|
def model_copy(model: _ModelT) -> _ModelT:
|
||
|
if PYDANTIC_V2:
|
||
|
return model.model_copy()
|
||
|
return model.copy() # type: ignore
|
||
|
|
||
|
|
||
|
def model_json(model: pydantic.BaseModel, *, indent: int | None = None) -> str:
|
||
|
if PYDANTIC_V2:
|
||
|
return model.model_dump_json(indent=indent)
|
||
|
return model.json(indent=indent) # type: ignore
|
||
|
|
||
|
|
||
|
def model_dump(
|
||
|
model: pydantic.BaseModel,
|
||
|
*,
|
||
|
exclude_unset: bool = False,
|
||
|
exclude_defaults: bool = False,
|
||
|
) -> dict[str, Any]:
|
||
|
if PYDANTIC_V2:
|
||
|
return model.model_dump(
|
||
|
exclude_unset=exclude_unset,
|
||
|
exclude_defaults=exclude_defaults,
|
||
|
)
|
||
|
return cast(
|
||
|
"dict[str, Any]",
|
||
|
model.dict( # pyright: ignore[reportDeprecated, reportUnnecessaryCast]
|
||
|
exclude_unset=exclude_unset,
|
||
|
exclude_defaults=exclude_defaults,
|
||
|
),
|
||
|
)
|
||
|
|
||
|
|
||
|
def model_parse(model: type[_ModelT], data: Any) -> _ModelT:
|
||
|
if PYDANTIC_V2:
|
||
|
return model.model_validate(data)
|
||
|
return model.parse_obj(data) # pyright: ignore[reportDeprecated]
|
||
|
|
||
|
|
||
|
# generic models
|
||
|
if TYPE_CHECKING:
|
||
|
|
||
|
class GenericModel(pydantic.BaseModel):
|
||
|
...
|
||
|
|
||
|
else:
|
||
|
if PYDANTIC_V2:
|
||
|
# there no longer needs to be a distinction in v2 but
|
||
|
# we still have to create our own subclass to avoid
|
||
|
# inconsistent MRO ordering errors
|
||
|
class GenericModel(pydantic.BaseModel):
|
||
|
...
|
||
|
|
||
|
else:
|
||
|
import pydantic.generics
|
||
|
|
||
|
class GenericModel(pydantic.generics.GenericModel, pydantic.BaseModel):
|
||
|
...
|
||
|
|
||
|
|
||
|
# cached properties
|
||
|
if TYPE_CHECKING:
|
||
|
cached_property = property
|
||
|
|
||
|
# we define a separate type (copied from typeshed)
|
||
|
# that represents that `cached_property` is `set`able
|
||
|
# at runtime, which differs from `@property`.
|
||
|
#
|
||
|
# this is a separate type as editors likely special case
|
||
|
# `@property` and we don't want to cause issues just to have
|
||
|
# more helpful internal types.
|
||
|
|
||
|
class typed_cached_property(Generic[_T]):
|
||
|
func: Callable[[Any], _T]
|
||
|
attrname: str | None
|
||
|
|
||
|
def __init__(self, func: Callable[[Any], _T]) -> None:
|
||
|
...
|
||
|
|
||
|
@overload
|
||
|
def __get__(self, instance: None, owner: type[Any] | None = None) -> Self:
|
||
|
...
|
||
|
|
||
|
@overload
|
||
|
def __get__(self, instance: object, owner: type[Any] | None = None) -> _T:
|
||
|
...
|
||
|
|
||
|
def __get__(self, instance: object, owner: type[Any] | None = None) -> _T | Self:
|
||
|
raise NotImplementedError()
|
||
|
|
||
|
def __set_name__(self, owner: type[Any], name: str) -> None:
|
||
|
...
|
||
|
|
||
|
# __set__ is not defined at runtime, but @cached_property is designed to be settable
|
||
|
def __set__(self, instance: object, value: _T) -> None:
|
||
|
...
|
||
|
else:
|
||
|
try:
|
||
|
from functools import cached_property as cached_property
|
||
|
except ImportError:
|
||
|
from cached_property import cached_property as cached_property
|
||
|
|
||
|
typed_cached_property = cached_property
|