



from typing import Dict, List, Optional, Tuple

from ...tokenization_utils import AddedToken, PreTrainedTokenizer
from ...utils import logging


UpperCamelCase__			=    logging.get_logger(__name__)
class       _lowerCAmelCase (			_UpperCAmelCase      ):






			"""simple docstring"""





			lowercase__   :	Dict  			=      ["""input_ids""", """attention_mask"""]





			def __init__(					self						:							Tuple      ,  lowercase						:							Tuple="[PAD]"      ,  lowercase						:							Any="[BOS]"      ,  lowercase						:							Tuple="[EOS]"      ,  lowercase						:							int="[MASK]"      ,  lowercase						:							Dict="[CLS]"      ,  lowercase						:							List[Any]="[SEP]"      ,  lowercase						:							List[str]=2_048      ,  **lowercase						:							List[str]      ,  )    ->       None:
									"""simple docstring"""







									__lowercase											=					AddedToken(lowercase      ,  lstrip=lowercase      ,  rstrip=lowercase ) if isinstance(lowercase      ,  lowercase ) else pad_token
									__lowercase											=					AddedToken(lowercase      ,  lstrip=lowercase      ,  rstrip=lowercase ) if isinstance(lowercase      ,  lowercase ) else bos_token
									__lowercase											=					AddedToken(lowercase      ,  lstrip=lowercase      ,  rstrip=lowercase ) if isinstance(lowercase      ,  lowercase ) else eos_token
									__lowercase											=					AddedToken(lowercase      ,  lstrip=lowercase      ,  rstrip=lowercase ) if isinstance(lowercase      ,  lowercase ) else mask_token
									__lowercase											=					AddedToken(lowercase      ,  lstrip=lowercase      ,  rstrip=lowercase ) if isinstance(lowercase      ,  lowercase ) else cls_token
									__lowercase											=					AddedToken(lowercase      ,  lstrip=lowercase      ,  rstrip=lowercase ) if isinstance(lowercase      ,  lowercase ) else sep_token

									super().__init__(
									    pad_token=lowercase      ,  bos_token=lowercase      ,  eos_token=lowercase      ,  mask_token=lowercase      ,  cls_token=lowercase      ,  sep_token=lowercase      ,  model_max_length=lowercase      ,  **lowercase      ,  )

									__lowercase											=					2**8  # utf is 8 bits

									# define special tokens dict
									__lowercase											=					{
									    self.pad_token: 0,
									    self.bos_token: 1,
									    self.eos_token: 2,
									    self.mask_token: 3,
									    self.cls_token: 4,
									    self.sep_token: 5,
									}
									__lowercase											=					len(self.special_tokens_encoder )
									__lowercase											=					{v: k for k, v in self.special_tokens_encoder.items()}





			def 		snake_case__      (					self						:							Tuple )    ->       Dict[str, int]:
									"""simple docstring"""







									__lowercase											=					self.special_tokens_encoder.copy()
									vocab.update(self.added_tokens_encoder )
									for i in range(self._utf_vocab_size ):
															__lowercase											=					chr(lowercase )
															__lowercase											=					i + len(self.special_tokens_encoder )
									return vocab





			@property
			def 		snake_case__      (					self						:							int )    ->       Optional[Any]:
									"""simple docstring"""







									return self._utf_vocab_size + self._num_special_tokens





			def 		snake_case__      (					self						:							Tuple      ,  lowercase						:							List[int]      ,  lowercase						:							Optional[List[int]] = None      ,  lowercase						:							bool = False )    ->       List[int]:
									"""simple docstring"""







									if already_has_special_tokens:
															return super().get_special_tokens_mask(
															    token_ids_a=lowercase      ,  token_ids_a=lowercase      ,  already_has_special_tokens=lowercase )

									# normal case: some special tokens
									if token_ids_a is None:
															return [1] + [0] * len(lowercase ) + [1]
									return [1] + ([0] * len(lowercase )) + [1] + ([0] * len(lowercase )) + [1]





			def 		snake_case__      (					self						:							Dict      ,  lowercase						:							List[int]      ,  lowercase						:							Optional[List[int]] = None )    ->       List[int]:
									"""simple docstring"""







									if token_ids_a is None:
															return [self.cls_token_id] + token_ids_a + [self.sep_token_id]
									else:
															return [self.cls_token_id] + token_ids_a + [self.sep_token_id] + token_ids_a + [self.sep_token_id]





			def 		snake_case__      (					self						:							Union[str, Any]      ,  lowercase						:							str )    ->       List[str]:
									"""simple docstring"""







									__lowercase											=					[chr(lowercase ) for i in text.encode("""utf-8""" )]
									return tokens





			def 		snake_case__      (					self						:							Optional[int]      ,  lowercase						:							Optional[Any] )    ->       List[Any]:
									"""simple docstring"""







									if token in self.special_tokens_encoder:
															__lowercase											=					self.special_tokens_encoder[token]
									elif token in self.added_tokens_encoder:
															__lowercase											=					self.added_tokens_encoder[token]
									elif len(lowercase ) != 1:
															__lowercase											=					self.unk_token_id
									else:
															__lowercase											=					ord(lowercase ) + self._num_special_tokens
									return token_id





			def 		snake_case__      (					self						:							Optional[Any]      ,  lowercase						:							str )    ->       Tuple:
									"""simple docstring"""







									if index in self.special_tokens_decoder:
															__lowercase											=					self.special_tokens_decoder[index]
									elif index in self.added_tokens_decoder:
															__lowercase											=					self.added_tokens_decoder[index]
									else:
															__lowercase											=					chr(index - self._num_special_tokens )
									return token





			def 		snake_case__      (					self						:							int      ,  lowercase						:							Any )    ->       Union[str, Any]:
									"""simple docstring"""







									__lowercase											=					b""""""
									for token in tokens:
															if token in self.special_tokens_decoder:
																					__lowercase											=					self.special_tokens_decoder[token].encode("""utf-8""" )
															elif token in self.added_tokens_decoder:
																					__lowercase											=					self.special_tokens_decoder[token].encode("""utf-8""" )
															elif token in self.special_tokens_encoder:
																					__lowercase											=					token.encode("""utf-8""" )
															elif token in self.added_tokens_encoder:
																					__lowercase											=					token.encode("""utf-8""" )
															else:
																					__lowercase											=					bytes([ord(lowercase )] )
															bstring += tok_string
									__lowercase											=					bstring.decode("""utf-8"""      ,  errors="""replace""" )
									return string







			def 		snake_case__      (					self						:							Any      ,  lowercase						:							str      ,  lowercase						:							Optional[str] = None )    ->       Tuple[str]:
									"""simple docstring"""







									return ()










from __future__ import annotations

from typing import Generic, TypeVar

UpperCamelCase__			=    TypeVar("T")
class       _lowerCAmelCase (			Generic[T]      ):






			"""simple docstring"""





			def __init__(					self						:							int      ,  lowercase						:							T )    ->       Union[str, Any]:
									"""simple docstring"""







									__lowercase											=					data  # Assign data
									__lowercase											=					None  # Initialize next as null
									__lowercase											=					None  # Initialize prev as null





class       _lowerCAmelCase (			Generic[T]      ):






			"""simple docstring"""





			def __init__(					self						:							Any )    ->       None:
									"""simple docstring"""







									__lowercase											=					None





			def 		snake_case__      (					self						:							str      ,  lowercase						:							T )    ->       None:
									"""simple docstring"""







									if self.head is None:
															__lowercase											=					Node(lowercase )
									else:
															__lowercase											=					Node(lowercase )
															__lowercase											=					new_node
															__lowercase											=					self.head
															__lowercase											=					None
															__lowercase											=					new_node





			def 		snake_case__      (					self						:							Optional[Any] )    ->       T | None:
									"""simple docstring"""







									if self.head is None:
															return None
									else:
															assert self.head is not None
															__lowercase											=					self.head.data
															__lowercase											=					self.head.next
															if self.head is not None:
																					__lowercase											=					None
															return temp





			def 		snake_case__      (					self						:							Optional[Any] )    ->       T | None:
									"""simple docstring"""







									return self.head.data if self.head is not None else None





			def __len__(					self						:							List[str] )    ->       int:
									"""simple docstring"""







									__lowercase											=					self.head
									__lowercase											=					0
									while temp is not None:
															count += 1
															__lowercase											=					temp.next
									return count





			def 		snake_case__      (					self						:							Optional[Any] )    ->       bool:
									"""simple docstring"""







									return self.head is None







			def 		snake_case__      (					self						:							Optional[Any] )    ->       None:
									"""simple docstring"""







									print("""stack elements are:""" )
									__lowercase											=					self.head
									while temp is not None:
															print(temp.data      ,  end="""->""" )
															__lowercase											=					temp.next


# Code execution starts here
if __name__ == "__main__":
			# Start with the empty stack
			UpperCamelCase__			=    Stack()

			# Insert 4 at the beginning. So stack becomes 4->None
			print("Stack operations using Doubly LinkedList")
			stack.push(4)

			# Insert 5 at the beginning. So stack becomes 4->5->None
			stack.push(5)

			# Insert 6 at the beginning. So stack becomes 4->5->6->None
			stack.push(6)

			# Insert 7 at the beginning. So stack becomes 4->5->6->7->None
			stack.push(7)

			# Print the stack
			stack.print_stack()

			# Print the top element
			print("\nTop element is ", stack.top())

			# Print the stack size
			print("Size of the stack is ", len(stack))

			# pop the top element
			stack.pop()

			# pop the top element
			stack.pop()

			# two elements have now been popped off
			stack.print_stack()

			# Print True if the stack is empty else False
			print("\nstack is empty:", stack.is_empty())





