
from typing import Tuple, Union

from ...modeling_outputs import BackboneOutput
from ...modeling_utils import PreTrainedModel
from ...utils import is_timm_available, is_torch_available, requires_backends
from ...utils.backbone_utils import BackboneMixin
from .configuration_timm_backbone import TimmBackboneConfig


if is_timm_available():
			import timm


if is_torch_available():
			from torch import Tensor




class        _SCREAMING_SNAKE_CASE	( snake_case_     ,			snake_case_		):
	lowerCAmelCase__   =					'pixel_values'
	lowerCAmelCase__   =					False
	lowerCAmelCase__   =					TimmBackboneConfig



	def __init__(       self		,    lowercase		,    **lowercase					)							->			Dict:
					requires_backends(self		,    "timm"					)
					super().__init__(lowercase					)
					lowerCamelCase_         =     config

					if config.backbone is None:
									raise ValueError("backbone is not set in the config. Please set it to a timm model name."					)

					if config.backbone not in timm.list_models():
									raise ValueError(f'backbone {config.backbone} is not supported by timm.'					)

					if hasattr(lowercase		,    "out_features"					) and config.out_features is not None:
									raise ValueError("out_features is not supported by TimmBackbone. Please use out_indices instead."					)

					lowerCamelCase_         =     getattr(lowercase		,    "use_pretrained_backbone"		,    lowercase					)
					if pretrained is None:
									raise ValueError("use_pretrained_backbone is not set in the config. Please set it to True or False."					)

					# We just take the final layer by default. This matches the default for the transformers models.
					lowerCamelCase_         =     config.out_indices if getattr(lowercase		,    "out_indices"		,    lowercase					) is not None else (-1,)

					lowerCamelCase_         =     timm.create_model(
					    config.backbone		,    pretrained=lowercase		,    features_only=config.features_only		,    in_chans=config.num_channels		,    out_indices=lowercase		,    **lowercase		,    )
					# These are used to control the output of the model when called. If output_hidden_states is True, then
					# return_layers is modified to include all layers.
					lowerCamelCase_         =     self._backbone.return_layers
					lowerCamelCase_         =     {layer["module"]: str(lowercase					) for i, layer in enumerate(self._backbone.feature_info.info					)}
					super()._init_backbone(lowercase					)



	@classmethod
	def        SCREAMING_SNAKE_CASE_(       cls		,    lowercase		,    *lowercase		,    **lowercase					)							->			Dict:
					requires_backends(cls		,    ["vision", "timm"]					)
					from ...models.timm_backbone import TimmBackboneConfig

					lowerCamelCase_         =     kwargs.pop("config"		,    TimmBackboneConfig()					)

					lowerCamelCase_         =     kwargs.pop("use_timm_backbone"		,    lowercase					)
					if not use_timm:
									raise ValueError("use_timm_backbone must be True for timm backbones"					)

					lowerCamelCase_         =     kwargs.pop("num_channels"		,    config.num_channels					)
					lowerCamelCase_         =     kwargs.pop("features_only"		,    config.features_only					)
					lowerCamelCase_         =     kwargs.pop("use_pretrained_backbone"		,    config.use_pretrained_backbone					)
					lowerCamelCase_         =     kwargs.pop("out_indices"		,    config.out_indices					)
					lowerCamelCase_         =     TimmBackboneConfig(
					    backbone=lowercase		,    num_channels=lowercase		,    features_only=lowercase		,    use_pretrained_backbone=lowercase		,    out_indices=lowercase		,    )
					return super()._from_config(lowercase		,    **lowercase					)



	def        SCREAMING_SNAKE_CASE_(       self		,    lowercase					)							->			List[Any]:
					pass



	def        SCREAMING_SNAKE_CASE_(       self		,    lowercase		,    lowercase=None		,    lowercase=None		,    lowercase=None		,    **lowercase					)							->			Union[BackboneOutput, Tuple[Tensor, ...]]:
					lowerCamelCase_         =     return_dict if return_dict is not None else self.config.use_return_dict
					lowerCamelCase_         =     (
					    output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
					)
					lowerCamelCase_         =     output_attentions if output_attentions is not None else self.config.output_attentions

					if output_attentions:
									raise ValueError("Cannot output attentions for timm backbones at the moment"					)

					if output_hidden_states:
									# We modify the return layers to include all the stages of the backbone
									lowerCamelCase_         =     self._all_layers
									lowerCamelCase_         =     self._backbone(lowercase		,    **lowercase					)
									lowerCamelCase_         =     self._return_layers
									lowerCamelCase_         =     tuple(hidden_states[i] for i in self.out_indices					)
					else:
									lowerCamelCase_         =     self._backbone(lowercase		,    **lowercase					)
									lowerCamelCase_         =     None

					lowerCamelCase_         =     tuple(lowercase					)
					lowerCamelCase_         =     tuple(lowercase					) if hidden_states is not None else None

					if not return_dict:
									lowerCamelCase_         =     (feature_maps,)
									if output_hidden_states:
													lowerCamelCase_         =     output + (hidden_states,)
									return output

					return BackboneOutput(feature_maps=lowercase		,    hidden_states=lowercase		,    attentions=lowercase					)




class        _SCREAMING_SNAKE_CASE	:



	def __init__(       self		,    lowercase		,    lowercase=None		,    lowercase=None					)							->			List[Any]:
					lowerCamelCase_         =     data
					lowerCamelCase_         =     previous
					lowerCamelCase_         =     next_node



	def __str__(       self					)							->			str:
					return f'{self.data}'



	def        SCREAMING_SNAKE_CASE_(       self					)							->			int:
					return self.data



	def        SCREAMING_SNAKE_CASE_(       self					)							->			Union[str, Any]:
					return self.next



	def        SCREAMING_SNAKE_CASE_(       self					)							->			int:
					return self.previous




class        _SCREAMING_SNAKE_CASE	:



	def __init__(       self		,    lowercase					)							->			Optional[int]:
					lowerCamelCase_         =     head



	def __iter__(       self					)							->			int:
					return self



	def        SCREAMING_SNAKE_CASE_(       self					)							->			Optional[Any]:
					if not self.current:
									raise StopIteration
					else:
									lowerCamelCase_         =     self.current.get_data()
									lowerCamelCase_         =     self.current.get_next()
									return value




class        _SCREAMING_SNAKE_CASE	:



	def __init__(       self					)							->			Union[str, Any]:
					lowerCamelCase_         =     None  # First node in list
					lowerCamelCase_         =     None  # Last node in list



	def __str__(       self					)							->			Optional[Any]:
					lowerCamelCase_         =     self.head
					lowerCamelCase_         =     []
					while current is not None:
									nodes.append(current.get_data()					)
									lowerCamelCase_         =     current.get_next()
					return " ".join(str(lowercase					) for node in nodes					)



	def __contains__(       self		,    lowercase					)							->			Optional[int]:
					lowerCamelCase_         =     self.head
					while current:
									if current.get_data() == value:
													return True
									lowerCamelCase_         =     current.get_next()
					return False



	def __iter__(       self					)							->			List[str]:
					return LinkedListIterator(self.head					)



	def        SCREAMING_SNAKE_CASE_(       self					)							->			List[str]:
					if self.head:
									return self.head.get_data()
					return None



	def        SCREAMING_SNAKE_CASE_(       self					)							->			Any:
					if self.tail:
									return self.tail.get_data()
					return None



	def        SCREAMING_SNAKE_CASE_(       self		,    lowercase					)							->			None:
					if self.head is None:
									lowerCamelCase_         =     node
									lowerCamelCase_         =     node
					else:
									self.insert_before_node(self.head		,    lowercase					)



	def        SCREAMING_SNAKE_CASE_(       self		,    lowercase					)							->			None:
					if self.head is None:
									self.set_head(lowercase					)
					else:
									self.insert_after_node(self.tail		,    lowercase					)



	def        SCREAMING_SNAKE_CASE_(       self		,    lowercase					)							->			None:
					lowerCamelCase_         =     Node(lowercase					)
					if self.head is None:
									self.set_head(lowercase					)
					else:
									self.set_tail(lowercase					)



	def        SCREAMING_SNAKE_CASE_(       self		,    lowercase		,    lowercase					)							->			None:
					lowerCamelCase_         =     node
					lowerCamelCase_         =     node.previous

					if node.get_previous() is None:
									lowerCamelCase_         =     node_to_insert
					else:
									lowerCamelCase_         =     node_to_insert

					lowerCamelCase_         =     node_to_insert



	def        SCREAMING_SNAKE_CASE_(       self		,    lowercase		,    lowercase					)							->			None:
					lowerCamelCase_         =     node
					lowerCamelCase_         =     node.next

					if node.get_next() is None:
									lowerCamelCase_         =     node_to_insert
					else:
									lowerCamelCase_         =     node_to_insert

					lowerCamelCase_         =     node_to_insert



	def        SCREAMING_SNAKE_CASE_(       self		,    lowercase		,    lowercase					)							->			None:
					lowerCamelCase_         =     1
					lowerCamelCase_         =     Node(lowercase					)
					lowerCamelCase_         =     self.head
					while node:
									if current_position == position:
													self.insert_before_node(lowercase		,    lowercase					)
													return
									current_position += 1
									lowerCamelCase_         =     node.next
					self.insert_after_node(self.tail		,    lowercase					)



	def        SCREAMING_SNAKE_CASE_(       self		,    lowercase					)							->			Node:
					lowerCamelCase_         =     self.head
					while node:
									if node.get_data() == item:
													return node
									lowerCamelCase_         =     node.get_next()
					raise Exception("Node not found"					)



	def        SCREAMING_SNAKE_CASE_(       self		,    lowercase					)							->			Union[str, Any]:
					if (node := self.get_node(lowercase					)) is not None:
									if node == self.head:
													lowerCamelCase_         =     self.head.get_next()

									if node == self.tail:
													lowerCamelCase_         =     self.tail.get_previous()

									self.remove_node_pointers(lowercase					)



	@staticmethod
	def        SCREAMING_SNAKE_CASE_(       lowercase					)							->			None:
					if node.get_next():
									lowerCamelCase_         =     node.previous

					if node.get_previous():
									lowerCamelCase_         =     node.next

					lowerCamelCase_         =     None
					lowerCamelCase_         =     None



	def        SCREAMING_SNAKE_CASE_(       self					)							->			int:
					return self.head is None





def      lowerCamelCase_					(							):
				pass


if __name__ == "__main__":
			import doctest

			doctest.testmod()


