
'''simple docstring'''





from __future__ import annotations

from collections.abc import Iterable
from dataclasses import dataclass
from typing import Any



class 			lowerCAmelCase__ :



  '''simple docstring'''






  _UpperCamelCase							=			('_front', '_back', '_len')



  @dataclass
  class 			lowerCAmelCase__ :



    '''simple docstring'''






    _UpperCamelCase							=			None
    _UpperCamelCase							=			None
    _UpperCamelCase							=			None



  class 			lowerCAmelCase__ :



    '''simple docstring'''






    _UpperCamelCase							=			('_cur',)

    def __init__(self	:			Tuple						,			lowerCAmelCase_	:			Deque._Node | None     ) ->							None:
          snake_case_    							=				cur

    def __iter__(self	:			Union[str, Any]     ) ->							Deque._Iterator:
          return self


    def 		_lowerCamelCase						(self	:			Tuple     ) ->							Any:
          if self._cur is None:
                # finished iterating
                raise StopIteration
          snake_case_    							=				self._cur.val
          snake_case_    							=				self._cur.next_node

          return val

  def __init__(self	:			Dict						,			lowerCAmelCase_	:			Iterable[Any] | None = None     ) ->							None:
        snake_case_    							=				None
        snake_case_    							=				None
        snake_case_    							=				0

        if iterable is not None:
              # append every value to the deque
              for val in iterable:
                    self.append(lowerCAmelCase_     )

  def 		_lowerCamelCase						(self	:			Optional[int]						,			lowerCAmelCase_	:			Any     ) ->							None:
        snake_case_    							=				self._Node(lowerCAmelCase_						,			lowerCAmelCase_						,			lowerCAmelCase_     )
        if self.is_empty():
              # front = back
              snake_case_    							=				snake_case_    							=				node
              snake_case_    							=				1
        else:
              # connect nodes
              snake_case_    							=				node
              snake_case_    							=				self._back
              snake_case_    							=				node  # assign new back to the new node

              self._len += 1

              # make sure there were no errors
              assert not self.is_empty(), "Error on appending value."

  def 		_lowerCamelCase						(self	:			Any						,			lowerCAmelCase_	:			Any     ) ->							None:
        snake_case_    							=				self._Node(lowerCAmelCase_						,			lowerCAmelCase_						,			lowerCAmelCase_     )
        if self.is_empty():
              # front = back
              snake_case_    							=				snake_case_    							=				node
              snake_case_    							=				1
        else:
              # connect nodes
              snake_case_    							=				self._front
              snake_case_    							=				node
              snake_case_    							=				node  # assign new front to the new node

              self._len += 1

              # make sure there were no errors
              assert not self.is_empty(), "Error on appending value."

  def 		_lowerCamelCase						(self	:			Union[str, Any]						,			lowerCAmelCase_	:			Iterable[Any]     ) ->							None:
        for val in iterable:
              self.append(lowerCAmelCase_     )

  def 		_lowerCamelCase						(self	:			List[Any]						,			lowerCAmelCase_	:			Iterable[Any]     ) ->							None:
        for val in iterable:
              self.appendleft(lowerCAmelCase_     )

  def 		_lowerCamelCase						(self	:			str     ) ->							Any:
        assert not self.is_empty(), "Deque is empty."

        snake_case_    							=				self._back
        snake_case_    							=				self._back.prev_node  # set new back
        # drop the last node - python will deallocate memory automatically
        snake_case_    							=				None

        self._len -= 1

        return topop.val

  def 		_lowerCamelCase						(self	:			List[Any]     ) ->							Any:
        assert not self.is_empty(), "Deque is empty."

        snake_case_    							=				self._front
        snake_case_    							=				self._front.next_node  # set new front and drop the first node
        snake_case_    							=				None

        self._len -= 1

        return topop.val

  def 		_lowerCamelCase						(self	:			str     ) ->							bool:
        return self._front is None

  def __len__(self	:			Optional[int]     ) ->							int:
        return self._len

  def __eq__(self	:			str						,			lowerCAmelCase_	:			object     ) ->							bool:

        if not isinstance(lowerCAmelCase_						,			lowerCAmelCase_     ):
              return NotImplemented

        snake_case_    							=				self._front
        snake_case_    							=				other._front

        # if the length of the dequeues are not the same, they are not equal
        if len(self     ) != len(lowerCAmelCase_     ):
              return False

        while me is not None and oth is not None:
              # compare every value
              if me.val != oth.val:
                    return False
              snake_case_    							=				me.next_node
              snake_case_    							=				oth.next_node

        return True

  def __iter__(self	:			Tuple     ) ->							Deque._Iterator:
        return Deque._Iterator(self._front     )


  def __repr__(self	:			Tuple     ) ->							str:
        snake_case_    							=				[]
        snake_case_    							=				self._front
        while aux is not None:
              # append the values in a list to display
              values_list.append(aux.val     )
              snake_case_    							=				aux.next_node

        return f'''[{', '.join(repr(lowerCAmelCase_     ) for val in values_list     )}]'''


if __name__ == "__main__":
     import doctest

     doctest.testmod()



from ..utils import DummyObject, requires_backends
class       A__  (		metaclass=lowerCAmelCase__							):
							lowerCAmelCase__						:		Tuple            =				["torch", "transformers", "invisible_watermark"]





							def __init__(					self    :  Any	,					*_UpperCAmelCase    :  Optional[Any]	,					**_UpperCAmelCase    :  List[str]							)		->						Tuple:



											"""simple docstring"""


											requires_backends(self	,					['torch', 'transformers', 'invisible_watermark']							)





							@classmethod
							def      a__					(					cls    :  str	,					*_UpperCAmelCase    :  List[str]	,					**_UpperCAmelCase    :  Optional[Any]							)		->						Union[str, Any]:



											"""simple docstring"""


											requires_backends(cls	,					['torch', 'transformers', 'invisible_watermark']							)





							@classmethod
							def      a__					(					cls    :  List[Any]	,					*_UpperCAmelCase    :  List[Any]	,					**_UpperCAmelCase    :  Union[str, Any]							)		->						str:



											"""simple docstring"""


											requires_backends(cls	,					['torch', 'transformers', 'invisible_watermark']							)






class       A__  (		metaclass=lowerCAmelCase__							):
							lowerCAmelCase__						:		Tuple            =				["torch", "transformers", "invisible_watermark"]





							def __init__(					self    :  Dict	,					*_UpperCAmelCase    :  Optional[int]	,					**_UpperCAmelCase    :  Any							)		->						Union[str, Any]:



											"""simple docstring"""


											requires_backends(self	,					['torch', 'transformers', 'invisible_watermark']							)





							@classmethod
							def      a__					(					cls    :  List[str]	,					*_UpperCAmelCase    :  Union[str, Any]	,					**_UpperCAmelCase    :  Optional[Any]							)		->						Optional[int]:



											"""simple docstring"""


											requires_backends(cls	,					['torch', 'transformers', 'invisible_watermark']							)





							@classmethod
							def      a__					(					cls    :  Tuple	,					*_UpperCAmelCase    :  List[Any]	,					**_UpperCAmelCase    :  Tuple							)		->						Any:



											"""simple docstring"""


											requires_backends(cls	,					['torch', 'transformers', 'invisible_watermark']							)





