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from collections.abc import Callable, Iterable, Iterator, Mapping
from typing import Any, Protocol, TypeAlias, TypeVar, type_check_only
from django.db.models import Choices
_Choice: TypeAlias = tuple[Any, Any]
_ChoiceNamedGroup: TypeAlias = tuple[str, Iterable[_Choice]]
_Choices: TypeAlias = Iterable[_Choice | _ChoiceNamedGroup]
_ChoicesMapping: TypeAlias = Mapping[Any, Any]
_ChoicesInput: TypeAlias = _Choices | _ChoicesMapping | type[Choices] | Callable[[], _Choices | _ChoicesMapping] # noqa: PYI047
@type_check_only
class _ChoicesCallable(Protocol):
def __call__(self) -> _Choices: ...
class BaseChoiceIterator:
def __getitem__(self, index: int) -> _Choice | _ChoiceNamedGroup: ...
def __iter__(self) -> Iterator[_Choice | _ChoiceNamedGroup]: ...
class BlankChoiceIterator(BaseChoiceIterator):
choices: _Choices
blank_choice: _Choices
def __init__(self, choices: _Choices, blank_choice: _Choices) -> None: ...
class CallableChoiceIterator(BaseChoiceIterator):
func: _ChoicesCallable
def __init__(self, func: _ChoicesCallable) -> None: ...
_V = TypeVar("_V")
_L = TypeVar("_L")
def flatten_choices(choices: Iterable[tuple[_V, _L | Iterable[tuple[_V, _L]]]]) -> Iterator[tuple[_V, _L]]: ...
def normalize_choices(value: Any, *, depth: int = 0) -> Any: ...
__all__ = [
"BaseChoiceIterator",
"BlankChoiceIterator",
"CallableChoiceIterator",
"flatten_choices",
"normalize_choices",
]
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