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Add support for Fast Stream Depends #898

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23 changes: 21 additions & 2 deletions src/dependency_injector/wiring.py
Original file line number Diff line number Diff line change
Expand Up @@ -66,6 +66,12 @@ def get_origin(tp):
werkzeug = None


try:
import fast_depends.dependencies
except ImportError:
fast_depends = None


from . import providers

__all__ = (
Expand Down Expand Up @@ -583,6 +589,8 @@ def _unpatch_attribute(patched: PatchedAttribute) -> None:


def _extract_marker(parameter: inspect.Parameter) -> Optional["_Marker"]:
depends_available = False

if get_origin(parameter.annotation) is Annotated:
args = get_args(parameter.annotation)
if len(args) > 1:
Expand All @@ -592,10 +600,13 @@ def _extract_marker(parameter: inspect.Parameter) -> Optional["_Marker"]:
else:
marker = parameter.default

if not isinstance(marker, _Marker) and not _is_fastapi_depends(marker):
if _is_fastapi_depends(marker) or _is_fast_stream_depends(marker):
depends_available = True

if not isinstance(marker, _Marker) and not depends_available:
return None

if _is_fastapi_depends(marker):
if depends_available:
marker = marker.dependency

if not isinstance(marker, _Marker):
Expand Down Expand Up @@ -721,6 +732,14 @@ def _is_fastapi_depends(param: Any) -> bool:
return fastapi and isinstance(param, fastapi.params.Depends)


if fast_depends:
def _is_fast_stream_depends(param: Any) -> bool:
return isinstance(param, fast_depends.dependencies.Depends)
else:
def _is_fast_stream_depends(param: Any) -> bool:
return False


def _is_patched(fn) -> bool:
return _patched_registry.has_callable(fn)

Expand Down