




'''simple docstring'''
import enum
import inspect
from typing import Iterable, List, Optional, Tuple, Union






class        SCREAMING_SNAKE_CASE(				enum.Enum     ):
       snake_case_ :     Any    =					"""timm"""
       snake_case_ :     Tuple    =					"""transformers"""

def 				snake_case_  (   a__		:	Optional[Iterable[str]]    ,a__		:	Optional[Iterable[int]]    ,a__		:	Optional[Iterable[str]]			):



    """simple docstring"""




    if stage_names is None:
        raise ValueError("""Stage_names must be set for transformers backbones"""			)

    if out_features is not None:
        if not isinstance(a__    ,(list,)			):
            raise ValueError(f'out_features must be a list {type(a__			)}'			)
        if any(feat not in stage_names for feat in out_features			):
            raise ValueError(f'out_features must be a subset of stage_names: {stage_names} got {out_features}'			)

    if out_indices is not None:
        if not isinstance(a__    ,(list, tuple)			):
            raise ValueError(f'out_indices must be a list or tuple, got {type(a__			)}'			)
        if any(idx >= len(a__			) for idx in out_indices			):
            raise ValueError("""out_indices must be valid indices for stage_names {stage_names}, got {out_indices}"""			)

    if out_features is not None and out_indices is not None:
        if len(a__			) != len(a__			):
            raise ValueError("""out_features and out_indices should have the same length if both are set"""			)
        if out_features != [stage_names[idx] for idx in out_indices]:
            raise ValueError("""out_features and out_indices should correspond to the same stages if both are set"""			)
def 				snake_case_  (   a__		:	Optional[List[str]]    ,a__		:	Optional[Union[List[int], Tuple[int]]]    ,a__		:	List[str]    ,):



    """simple docstring"""




    if out_indices is None and out_features is None:
        __lowercase							=						[len(a__			) - 1]
        __lowercase							=						[stage_names[-1]]
    elif out_indices is None and out_features is not None:
        __lowercase							=						[stage_names.index(a__			) for layer in out_features]
    elif out_features is None and out_indices is not None:
        __lowercase							=						[stage_names[idx] for idx in out_indices]
    return out_features, out_indices
def 				snake_case_  (   a__		:	Optional[List[str]]    ,a__		:	Optional[Union[List[int], Tuple[int]]]    ,a__		:	List[str]    ,):



    """simple docstring"""




    verify_out_features_out_indices(out_features=a__    ,out_indices=a__    ,stage_names=a__			)
    __lowercase				,__lowercase							=						_align_output_features_output_indices(
        out_features=a__    ,out_indices=a__    ,stage_names=a__			)
    # Verify that the aligned out_features and out_indices are valid
    verify_out_features_out_indices(out_features=a__    ,out_indices=a__    ,stage_names=a__			)
    return output_features, output_indices






class        SCREAMING_SNAKE_CASE:
       snake_case_ :     Optional[BackboneType]    =					None

       def     snake_case__			(    self					,		lowerCamelCase__     )    ->					None:

           """simple docstring"""



           if getattr(self					,		"""_backbone"""					,		lowerCamelCase__     ) is None:
               raise ValueError("""self._backbone must be set before calling _init_timm_backbone"""     )

           # These will diagree with the defaults for the transformers models e.g. for resnet50
           # the transformer model has out_features = ['stem', 'stage1', 'stage2', 'stage3', 'stage4']
           # the timm model has out_features = ['act', 'layer1', 'layer2', 'layer3', 'layer4']
           __lowercase							=						[stage["""module"""] for stage in self._backbone.feature_info.info]
           __lowercase							=						[stage["""num_chs"""] for stage in self._backbone.feature_info.info]
           __lowercase							=						self._backbone.feature_info.out_indices
           __lowercase							=						self._backbone.feature_info.module_name()

           # We verify the out indices and out features are valid
           verify_out_features_out_indices(
               out_features=lowerCamelCase__					,		out_indices=lowerCamelCase__					,		stage_names=self.stage_names     )
           __lowercase				,__lowercase							=						out_features, out_indices

       def     snake_case__			(    self					,		lowerCamelCase__     )    ->					None:

           """simple docstring"""



           __lowercase							=						getattr(lowerCamelCase__					,		"""stage_names"""     )
           __lowercase							=						getattr(lowerCamelCase__					,		"""out_features"""					,		lowerCamelCase__     )
           __lowercase							=						getattr(lowerCamelCase__					,		"""out_indices"""					,		lowerCamelCase__     )

           __lowercase							=						stage_names
           __lowercase				,__lowercase							=						get_aligned_output_features_output_indices(
               out_features=lowerCamelCase__					,		out_indices=lowerCamelCase__					,		stage_names=lowerCamelCase__     )
           # Number of channels for each stage. This is set in the transformer backbone model init
           __lowercase							=						None

       def     snake_case__			(    self					,		lowerCamelCase__     )    ->					None:

           """simple docstring"""



           __lowercase							=						config

           __lowercase							=						getattr(lowerCamelCase__					,		"""use_timm_backbone"""					,		lowerCamelCase__     )
           __lowercase							=						BackboneType.TIMM if self.use_timm_backbone else BackboneType.TRANSFORMERS

           if self.backbone_type == BackboneType.TIMM:
               self._init_timm_backbone(lowerCamelCase__     )
           elif self.backbone_type == BackboneType.TRANSFORMERS:
               self._init_transformers_backbone(lowerCamelCase__     )
           else:
               raise ValueError(F'backbone_type {self.backbone_type} not supported.'     )

       @property
       def     snake_case__			(    self     )    ->					Any:

           """simple docstring"""



           return self._out_features

       @out_features.setter
       def     snake_case__			(    self					,		lowerCamelCase__     )    ->					Dict:

           """simple docstring"""



           __lowercase				,__lowercase							=						get_aligned_output_features_output_indices(
               out_features=lowerCamelCase__					,		out_indices=lowerCamelCase__					,		stage_names=self.stage_names     )

       @property
       def     snake_case__			(    self     )    ->					str:

           """simple docstring"""



           return self._out_indices

       @out_indices.setter
       def     snake_case__			(    self					,		lowerCamelCase__     )    ->					List[str]:

           """simple docstring"""



           __lowercase				,__lowercase							=						get_aligned_output_features_output_indices(
               out_features=lowerCamelCase__					,		out_indices=lowerCamelCase__					,		stage_names=self.stage_names     )

       @property
       def     snake_case__			(    self     )    ->					Optional[int]:

           """simple docstring"""



           return {stage: self.num_features[i] for i, stage in enumerate(self.stage_names     )}

       @property
       def     snake_case__			(    self     )    ->					Union[str, Any]:

           """simple docstring"""



           return [self.out_feature_channels[name] for name in self.out_features]

       def     snake_case__			(    self					,		*lowerCamelCase__					,		**lowerCamelCase__     )    ->					Tuple:

           """simple docstring"""



           __lowercase							=						dict(inspect.signature(self.forward     ).parameters     )
           __lowercase							=						{k: v for k, v in kwargs.items() if k in signature}
           return self(*lowerCamelCase__					,		**lowerCamelCase__     )

       def     snake_case__			(    self					,		lowerCamelCase__					,		lowerCamelCase__ = None					,		lowerCamelCase__ = None					,		lowerCamelCase__ = None					,		)    ->					Optional[Any]:

           """simple docstring"""



           raise NotImplementedError("""This method should be implemented by the derived class."""     )




       def     snake_case__			(    self     )    ->					List[str]:

           """simple docstring"""



           __lowercase							=						super().to_dict()
           __lowercase							=						output.pop("""_out_features"""     )
           __lowercase							=						output.pop("""_out_indices"""     )
           return output






class        SCREAMING_SNAKE_CASE:

       @property
       def     snake_case__			(    self     )    ->					List[str]:

           """simple docstring"""



           return self._out_features

       @out_features.setter
       def     snake_case__			(    self					,		lowerCamelCase__     )    ->					str:

           """simple docstring"""



           __lowercase				,__lowercase							=						get_aligned_output_features_output_indices(
               out_features=lowerCamelCase__					,		out_indices=lowerCamelCase__					,		stage_names=self.stage_names     )

       @property
       def     snake_case__			(    self     )    ->					Any:

           """simple docstring"""



           return self._out_indices

       @out_indices.setter
       def     snake_case__			(    self					,		lowerCamelCase__     )    ->					Optional[Any]:

           """simple docstring"""



           __lowercase				,__lowercase							=						get_aligned_output_features_output_indices(
               out_features=lowerCamelCase__					,		out_indices=lowerCamelCase__					,		stage_names=self.stage_names     )




       def     snake_case__			(    self     )    ->					Dict:

           """simple docstring"""



           __lowercase							=						super().to_dict()
           __lowercase							=						output.pop("""_out_features"""     )
           __lowercase							=						output.pop("""_out_indices"""     )
           return output










'''simple docstring'''
def 				snake_case_  (   a__		:	int			):



    """simple docstring"""




    if not isinstance(a__    ,a__			) or number < 0:
        raise ValueError("""Input must be a non-negative integer"""			)

    __lowercase							=						number & ~(number - 1)
    __lowercase							=						0
    while intermediate:
        intermediate >>= 1
        index += 1
    return index - 1


if __name__ == "__main__":
  import doctest

  doctest.testmod(verbose=True)




