

from __future__ import annotations

import sys
from collections import deque
from typing import Generic, TypeVar

__lowercase     : Dict       =						TypeVar('''T''')



class 						_A     (				Generic[T]				):





  '''simple docstring'''



  __lowerCamelCase			:      Union[str, Any]					=   4_2  # Cache store of keys
  __lowerCamelCase			:      Tuple					=   4_2  # References of the keys in cache
  __lowerCamelCase			:      Dict					=   1_0  # Maximum capacity of cache





  def __init__(  self   ,SCREAMING_SNAKE_CASE_    ):

      '''simple docstring'''
      snake_case							:		List[str]        =		deque()
      snake_case							:		List[Any]        =		set()
      if not n:
          snake_case							:		Optional[Any]        =		sys.maxsize
      elif n < 0:
          raise ValueError("""n should be an integer greater than 0."""    )
      else:
          snake_case							:		Optional[Any]        =		n





  def    snake_case_       (  self   ,SCREAMING_SNAKE_CASE_    ):

      '''simple docstring'''
      if x not in self.key_reference:
          if len(self.dq_store    ) == LRUCache._MAX_CAPACITY:
              snake_case							:		int        =		self.dq_store.pop()
              self.key_reference.remove(_UpperCAmelCase    )
      else:
          self.dq_store.remove(_UpperCAmelCase    )

      self.dq_store.appendleft(_UpperCAmelCase    )
      self.key_reference.add(_UpperCAmelCase    )





  def    snake_case_       (  self    ):

      '''simple docstring'''
      for k in self.dq_store:
          print(_UpperCAmelCase    )





  def __repr__(  self    ):

      '''simple docstring'''
      return F"""LRUCache({self._MAX_CAPACITY}) => {list(self.dq_store    )}"""


if __name__ == "__main__":
     import doctest

     doctest.testmod()

     __lowercase     : LRUCache[str | int]       =						LRUCache(4)
     lru_cache.refer('''A''')
     lru_cache.refer(2)
     lru_cache.refer(3)
     lru_cache.refer('''A''')
     lru_cache.refer(4)
     lru_cache.refer(5)
     lru_cache.display()

     print(lru_cache)
     assert str(lru_cache) == "LRUCache(4) => [5, 4, 'A', 3]"











from typing import TYPE_CHECKING

from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available


snake_case__   :						Optional[int]													=   {
    """configuration_pegasus_x""": ["""PEGASUS_X_PRETRAINED_CONFIG_ARCHIVE_MAP""", """PegasusXConfig"""],
}

try:
 if not is_torch_available():
  raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
 pass
else:
 snake_case__   :						Dict													=   [
     """PEGASUS_X_PRETRAINED_MODEL_ARCHIVE_LIST""",
     """PegasusXForConditionalGeneration""",
     """PegasusXModel""",
     """PegasusXPreTrainedModel""",
 ]


if TYPE_CHECKING:
 from .configuration_pegasus_x import PEGASUS_X_PRETRAINED_CONFIG_ARCHIVE_MAP, PegasusXConfig

 try:
  if not is_torch_available():
   raise OptionalDependencyNotAvailable()
 except OptionalDependencyNotAvailable:
  pass
 else:
  from .modeling_pegasus_x import (
      PEGASUS_X_PRETRAINED_MODEL_ARCHIVE_LIST,
      PegasusXForConditionalGeneration,
      PegasusXModel,
      PegasusXPreTrainedModel,
  )


else:
 import sys

 snake_case__   :						Optional[Any]													=   _LazyModule(__name__, globals()["""__file__"""], _import_structure, module_spec=__spec__)





