|
- import json
- from functools import lru_cache
- from pathlib import Path
- from typing import TYPE_CHECKING, Any, Callable, Optional, Type, TypeVar, Union
-
- from pydantic.v1.parse import Protocol, load_file, load_str_bytes
- from pydantic.v1.types import StrBytes
- from pydantic.v1.typing import display_as_type
-
- __all__ = ('parse_file_as', 'parse_obj_as', 'parse_raw_as', 'schema_of', 'schema_json_of')
-
- NameFactory = Union[str, Callable[[Type[Any]], str]]
-
- if TYPE_CHECKING:
- from pydantic.v1.typing import DictStrAny
-
-
- def _generate_parsing_type_name(type_: Any) -> str:
- return f'ParsingModel[{display_as_type(type_)}]'
-
-
- @lru_cache(maxsize=2048)
- def _get_parsing_type(type_: Any, *, type_name: Optional[NameFactory] = None) -> Any:
- from pydantic.v1.main import create_model
-
- if type_name is None:
- type_name = _generate_parsing_type_name
- if not isinstance(type_name, str):
- type_name = type_name(type_)
- return create_model(type_name, __root__=(type_, ...))
-
-
- T = TypeVar('T')
-
-
- def parse_obj_as(type_: Type[T], obj: Any, *, type_name: Optional[NameFactory] = None) -> T:
- model_type = _get_parsing_type(type_, type_name=type_name) # type: ignore[arg-type]
- return model_type(__root__=obj).__root__
-
-
- def parse_file_as(
- type_: Type[T],
- path: Union[str, Path],
- *,
- content_type: str = None,
- encoding: str = 'utf8',
- proto: Protocol = None,
- allow_pickle: bool = False,
- json_loads: Callable[[str], Any] = json.loads,
- type_name: Optional[NameFactory] = None,
- ) -> T:
- obj = load_file(
- path,
- proto=proto,
- content_type=content_type,
- encoding=encoding,
- allow_pickle=allow_pickle,
- json_loads=json_loads,
- )
- return parse_obj_as(type_, obj, type_name=type_name)
-
-
- def parse_raw_as(
- type_: Type[T],
- b: StrBytes,
- *,
- content_type: str = None,
- encoding: str = 'utf8',
- proto: Protocol = None,
- allow_pickle: bool = False,
- json_loads: Callable[[str], Any] = json.loads,
- type_name: Optional[NameFactory] = None,
- ) -> T:
- obj = load_str_bytes(
- b,
- proto=proto,
- content_type=content_type,
- encoding=encoding,
- allow_pickle=allow_pickle,
- json_loads=json_loads,
- )
- return parse_obj_as(type_, obj, type_name=type_name)
-
-
- def schema_of(type_: Any, *, title: Optional[NameFactory] = None, **schema_kwargs: Any) -> 'DictStrAny':
- """Generate a JSON schema (as dict) for the passed model or dynamically generated one"""
- return _get_parsing_type(type_, type_name=title).schema(**schema_kwargs)
-
-
- def schema_json_of(type_: Any, *, title: Optional[NameFactory] = None, **schema_json_kwargs: Any) -> str:
- """Generate a JSON schema (as JSON) for the passed model or dynamically generated one"""
- return _get_parsing_type(type_, type_name=title).schema_json(**schema_json_kwargs)
|