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from __future__ import annotations
import collections.abc as cabc
import typing as t
if t.TYPE_CHECKING: # pragma: no cover
from _typeshed.wsgi import WSGIApplication # noqa: F401
from werkzeug.datastructures import Headers # noqa: F401
from werkzeug.sansio.response import Response # noqa: F401
# The possible types that are directly convertible or are a Response object.
ResponseValue = t.Union[
"Response",
str,
bytes,
list[t.Any],
# Only dict is actually accepted, but Mapping allows for TypedDict.
t.Mapping[str, t.Any],
t.Iterator[str],
t.Iterator[bytes],
cabc.AsyncIterable[str], # for Quart, until App is generic.
cabc.AsyncIterable[bytes],
]
# the possible types for an individual HTTP header
HeaderValue = str | list[str] | tuple[str, ...]
# the possible types for HTTP headers
HeadersValue = t.Union[
"Headers",
t.Mapping[str, HeaderValue],
t.Sequence[tuple[str, HeaderValue]],
]
# The possible types returned by a route function.
ResponseReturnValue = t.Union[
ResponseValue,
tuple[ResponseValue, HeadersValue],
tuple[ResponseValue, int],
tuple[ResponseValue, int, HeadersValue],
"WSGIApplication",
]
# Allow any subclass of werkzeug.Response, such as the one from Flask,
# as a callback argument. Using werkzeug.Response directly makes a
# callback annotated with flask.Response fail type checking.
ResponseClass = t.TypeVar("ResponseClass", bound="Response")
AppOrBlueprintKey = str | None # The App key is None, whereas blueprints are named
AfterRequestCallable = (
t.Callable[[ResponseClass], ResponseClass]
| t.Callable[[ResponseClass], t.Awaitable[ResponseClass]]
)
BeforeFirstRequestCallable = t.Callable[[], None] | t.Callable[[], t.Awaitable[None]]
BeforeRequestCallable = (
t.Callable[[], ResponseReturnValue | None]
| t.Callable[[], t.Awaitable[ResponseReturnValue | None]]
)
ShellContextProcessorCallable = t.Callable[[], dict[str, t.Any]]
TeardownCallable = (
t.Callable[[BaseException | None], None]
| t.Callable[[BaseException | None], t.Awaitable[None]]
)
TemplateContextProcessorCallable = (
t.Callable[[], dict[str, t.Any]] | t.Callable[[], t.Awaitable[dict[str, t.Any]]]
)
TemplateFilterCallable = t.Callable[..., t.Any]
TemplateGlobalCallable = t.Callable[..., t.Any]
TemplateTestCallable = t.Callable[..., bool]
URLDefaultCallable = t.Callable[[str, dict[str, t.Any]], None]
URLValuePreprocessorCallable = t.Callable[[str | None, dict[str, t.Any] | None], None]
# This should take Exception, but that either breaks typing the argument
# with a specific exception, or decorating multiple times with different
# exceptions (and using a union type on the argument).
# https://github.com/pallets/flask/issues/4095
# https://github.com/pallets/flask/issues/4295
# https://github.com/pallets/flask/issues/4297
ErrorHandlerCallable = (
t.Callable[[t.Any], ResponseReturnValue]
| t.Callable[[t.Any], t.Awaitable[ResponseReturnValue]]
)
RouteCallable = (
t.Callable[..., ResponseReturnValue]
| t.Callable[..., t.Awaitable[ResponseReturnValue]]
)