


import json
import os
from functools import lru_cache
from typing import List, Optional, Tuple

import regex as re

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


__snake_case   							=						logging.get_logger(__name__)


__snake_case   							=						{'''vocab_file''': '''vocab.json''', '''merges_file''': '''merges.txt'''}

__snake_case   							=						{
    '''vocab_file''': {
        '''allenai/longformer-base-4096''': '''https://huggingface.co/allenai/longformer-base-4096/resolve/main/vocab.json''',
        '''allenai/longformer-large-4096''': (
            '''https://huggingface.co/allenai/longformer-large-4096/resolve/main/vocab.json'''
        ),
        '''allenai/longformer-large-4096-finetuned-triviaqa''': (
            '''https://huggingface.co/allenai/longformer-large-4096-finetuned-triviaqa/resolve/main/vocab.json'''
        ),
        '''allenai/longformer-base-4096-extra.pos.embd.only''': (
            '''https://huggingface.co/allenai/longformer-base-4096-extra.pos.embd.only/resolve/main/vocab.json'''
        ),
        '''allenai/longformer-large-4096-extra.pos.embd.only''': (
            '''https://huggingface.co/allenai/longformer-large-4096-extra.pos.embd.only/resolve/main/vocab.json'''
        ),
    },
    '''merges_file''': {
        '''allenai/longformer-base-4096''': '''https://huggingface.co/allenai/longformer-base-4096/resolve/main/merges.txt''',
        '''allenai/longformer-large-4096''': (
            '''https://huggingface.co/allenai/longformer-large-4096/resolve/main/merges.txt'''
        ),
        '''allenai/longformer-large-4096-finetuned-triviaqa''': (
            '''https://huggingface.co/allenai/longformer-large-4096-finetuned-triviaqa/resolve/main/merges.txt'''
        ),
        '''allenai/longformer-base-4096-extra.pos.embd.only''': (
            '''https://huggingface.co/allenai/longformer-base-4096-extra.pos.embd.only/resolve/main/merges.txt'''
        ),
        '''allenai/longformer-large-4096-extra.pos.embd.only''': (
            '''https://huggingface.co/allenai/longformer-large-4096-extra.pos.embd.only/resolve/main/merges.txt'''
        ),
    },
}

__snake_case   							=						{
    '''allenai/longformer-base-4096''': 4_0_9_6,
    '''allenai/longformer-large-4096''': 4_0_9_6,
    '''allenai/longformer-large-4096-finetuned-triviaqa''': 4_0_9_6,
    '''allenai/longformer-base-4096-extra.pos.embd.only''': 4_0_9_6,
    '''allenai/longformer-large-4096-extra.pos.embd.only''': 4_0_9_6,
}






@lru_cache()
# Copied from transformers.models.roberta.tokenization_roberta.bytes_to_unicode
def 		_A		(		)					-> List[Any]:


     """simple docstring"""


     __UpperCamelCase =			(
         list(range(ord('!' )					,  ord('~' ) + 1 ) ) + list(range(ord('¡' )					,  ord('¬' ) + 1 ) ) + list(range(ord('®' )					,  ord('ÿ' ) + 1 ) )
     )
     __UpperCamelCase =			bs[:]
     __UpperCamelCase =			0
     for b in range(2**8 ):
          if b not in bs:
               bs.append(_lowercase )
               cs.append(2**8 + n )
               n += 1
     __UpperCamelCase =			[chr(_lowercase ) for n in cs]
     return dict(zip(_lowercase					,  _lowercase ) )






def 		_A		(		_lowercase )					-> Dict:


     """simple docstring"""


     __UpperCamelCase =			set()
     __UpperCamelCase =			word[0]
     for char in word[1:]:
          pairs.add((prev_char, char) )
          __UpperCamelCase =			char
     return pairs



class 	__lowerCamelCase			(_a						):
       _lowercase											=     VOCAB_FILES_NAMES
       _lowercase											=     PRETRAINED_VOCAB_FILES_MAP
       _lowercase											=     PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
       _lowercase											=     ["""input_ids""", """attention_mask"""]







       def __init__(			self: str,A_: List[Any],A_: List[str],A_: List[Any]="replace",A_: Optional[int]="<s>",A_: Union[str, Any]="</s>",A_: List[Any]="</s>",A_: int="<s>",A_: List[Any]="<unk>",A_: List[str]="<pad>",A_: str="<mask>",A_: Dict=False,**A_: Tuple,):






            '''simple docstring'''




            __UpperCamelCase =			AddedToken(A_,lstrip=A_,rstrip=A_					) if isinstance(A_,A_					) else bos_token
            __UpperCamelCase =			AddedToken(A_,lstrip=A_,rstrip=A_					) if isinstance(A_,A_					) else eos_token
            __UpperCamelCase =			AddedToken(A_,lstrip=A_,rstrip=A_					) if isinstance(A_,A_					) else sep_token
            __UpperCamelCase =			AddedToken(A_,lstrip=A_,rstrip=A_					) if isinstance(A_,A_					) else cls_token
            __UpperCamelCase =			AddedToken(A_,lstrip=A_,rstrip=A_					) if isinstance(A_,A_					) else unk_token
            __UpperCamelCase =			AddedToken(A_,lstrip=A_,rstrip=A_					) if isinstance(A_,A_					) else pad_token

            # Mask token behave like a normal word, i.e. include the space before it
            __UpperCamelCase =			AddedToken(A_,lstrip=A_,rstrip=A_					) if isinstance(A_,A_					) else mask_token

            super().__init__(
                errors=A_,bos_token=A_,eos_token=A_,unk_token=A_,sep_token=A_,cls_token=A_,pad_token=A_,mask_token=A_,add_prefix_space=A_,**A_,)

            with open(A_,encoding='utf-8'					) as vocab_handle:
                 __UpperCamelCase =			json.load(A_					)
            __UpperCamelCase =			{v: k for k, v in self.encoder.items()}
            __UpperCamelCase =			errors  # how to handle errors in decoding
            __UpperCamelCase =			bytes_to_unicode()
            __UpperCamelCase =			{v: k for k, v in self.byte_encoder.items()}
            with open(A_,encoding='utf-8'					) as merges_handle:
                 __UpperCamelCase =			merges_handle.read().split('\n'					)[1:-1]
            __UpperCamelCase =			[tuple(merge.split()					) for merge in bpe_merges]
            __UpperCamelCase =			dict(zip(A_,range(len(A_					)					)					)					)
            __UpperCamelCase =			{}
            __UpperCamelCase =			add_prefix_space

            # Should have added re.IGNORECASE so BPE merges can happen for capitalized versions of contractions
            __UpperCamelCase =			re.compile(r'\'s|\'t|\'re|\'ve|\'m|\'ll|\'d| ?\p{L}+| ?\p{N}+| ?[^\s\p{L}\p{N}]+|\s+(?!\S)|\s+'					)







       @property
       def 		snake_case_	(			self: Tuple					):






            '''simple docstring'''




            return len(self.encoder					)







       def 		snake_case_	(			self: Any					):






            '''simple docstring'''




            return dict(self.encoder,**self.added_tokens_encoder					)







       def 		snake_case_	(			self: Dict,A_: List[Any]					):






            '''simple docstring'''




            if token in self.cache:
                 return self.cache[token]
            __UpperCamelCase =			tuple(A_					)
            __UpperCamelCase =			get_pairs(A_					)

            if not pairs:
                 return token

            while True:
                 __UpperCamelCase =			min(A_,key=lambda A_					: self.bpe_ranks.get(A_,float('inf'					)					)					)
                 if bigram not in self.bpe_ranks:
                      break
                 __UpperCamelCase,    __UpperCamelCase =			bigram
                 __UpperCamelCase =			[]
                 __UpperCamelCase =			0
                 while i < len(A_					):
                      try:
                           __UpperCamelCase =			word.index(A_,A_					)
                      except ValueError:
                           new_word.extend(word[i:]					)
                           break
                      else:
                           new_word.extend(word[i:j]					)
                           __UpperCamelCase =			j

                      if word[i] == first and i < len(A_					) - 1 and word[i + 1] == second:
                           new_word.append(first + second					)
                           i += 2
                      else:
                           new_word.append(word[i]					)
                           i += 1
                 __UpperCamelCase =			tuple(A_					)
                 __UpperCamelCase =			new_word
                 if len(A_					) == 1:
                      break
                 else:
                      __UpperCamelCase =			get_pairs(A_					)
            __UpperCamelCase =			' '.join(A_					)
            __UpperCamelCase =			word
            return word







       def 		snake_case_	(			self: Tuple,A_: List[Any]					):






            '''simple docstring'''




            __UpperCamelCase =			[]
            for token in re.findall(self.pat,A_					):
                 __UpperCamelCase =			''.join(
                     self.byte_encoder[b] for b in token.encode('utf-8'					)					)  # Maps all our bytes to unicode strings, avoiding control tokens of the BPE (spaces in our case)
                 bpe_tokens.extend(bpe_token for bpe_token in self.bpe(A_					).split(' '					)					)
            return bpe_tokens







       def 		snake_case_	(			self: Dict,A_: Union[str, Any]					):






            '''simple docstring'''




            return self.encoder.get(A_,self.encoder.get(self.unk_token					)					)







       def 		snake_case_	(			self: Union[str, Any],A_: int					):






            '''simple docstring'''




            return self.decoder.get(A_					)







       def 		snake_case_	(			self: Tuple,A_: List[str]					):






            '''simple docstring'''




            __UpperCamelCase =			''.join(A_					)
            __UpperCamelCase =			bytearray([self.byte_decoder[c] for c in text]					).decode('utf-8',errors=self.errors					)
            return text







       def 		snake_case_	(			self: List[str],A_: str,A_: Optional[str] = None					):






            '''simple docstring'''




            if not os.path.isdir(A_					):
                 logger.error(F'''Vocabulary path ({save_directory}) should be a directory'''					)
                 return
            __UpperCamelCase =			os.path.join(
                A_,(filename_prefix + '-' if filename_prefix else '') + VOCAB_FILES_NAMES['vocab_file']					)
            __UpperCamelCase =			os.path.join(
                A_,(filename_prefix + '-' if filename_prefix else '') + VOCAB_FILES_NAMES['merges_file']					)

            with open(A_,'w',encoding='utf-8'					) as f:
                 f.write(json.dumps(self.encoder,indent=2,sort_keys=A_,ensure_ascii=A_					) + '\n'					)

            __UpperCamelCase =			0
            with open(A_,'w',encoding='utf-8'					) as writer:
                 writer.write('#version: 0.2\n'					)
                 for bpe_tokens, token_index in sorted(self.bpe_ranks.items(),key=lambda A_					: kv[1]					):
                      if index != token_index:
                           logger.warning(
                               F'''Saving vocabulary to {merge_file}: BPE merge indices are not consecutive.'''
                               ' Please check that the tokenizer is not corrupted!'					)
                           __UpperCamelCase =			token_index
                      writer.write(' '.join(A_					) + '\n'					)
                      index += 1

            return vocab_file, merge_file







       def 		snake_case_	(			self: Union[str, Any],A_: List[int],A_: Optional[List[int]] = None					):






            '''simple docstring'''




            if token_ids_a is None:
                 return [self.cls_token_id] + token_ids_a + [self.sep_token_id]
            __UpperCamelCase =			[self.cls_token_id]
            __UpperCamelCase =			[self.sep_token_id]
            return cls + token_ids_a + sep + sep + token_ids_a + sep







       def 		snake_case_	(			self: str,A_: List[int],A_: Optional[List[int]] = None,A_: bool = False					):






            '''simple docstring'''




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

            if token_ids_a is None:
                 return [1] + ([0] * len(A_					)) + [1]
            return [1] + ([0] * len(A_					)) + [1, 1] + ([0] * len(A_					)) + [1]







       def 		snake_case_	(			self: Optional[Any],A_: List[int],A_: Optional[List[int]] = None					):






            '''simple docstring'''




            __UpperCamelCase =			[self.sep_token_id]
            __UpperCamelCase =			[self.cls_token_id]

            if token_ids_a is None:
                 return len(cls + token_ids_a + sep					) * [0]
            return len(cls + token_ids_a + sep + sep + token_ids_a + sep					) * [0]







       def 		snake_case_	(			self: List[str],A_: Optional[int],A_: Optional[int]=False,**A_: int					):






            '''simple docstring'''




            __UpperCamelCase =			kwargs.pop('add_prefix_space',self.add_prefix_space					)
            if (is_split_into_words or add_prefix_space) and (len(A_					) > 0 and not text[0].isspace()):
                 __UpperCamelCase =			' ' + text
            return (text, kwargs)






from typing import Any



class 	__lowerCamelCase			:







       def __init__(			self: int,A_: Any					):






            '''simple docstring'''




            __UpperCamelCase =			data
            __UpperCamelCase =			None







       def __repr__(			self: Any					):






            '''simple docstring'''




            return F'''Node({self.data})'''



class 	__lowerCamelCase			:







       def __init__(			self: Union[str, Any]					):






            '''simple docstring'''




            __UpperCamelCase =			None







       def __iter__(			self: int					):






            '''simple docstring'''




            __UpperCamelCase =			self.head
            while node:
                 yield node.data
                 __UpperCamelCase =			node.next







       def __len__(			self: List[str]					):






            '''simple docstring'''




            return sum(1 for _ in self					)







       def __repr__(			self: Any					):






            '''simple docstring'''




            return "->".join([str(A_					) for item in self]					)







       def __getitem__(			self: int,A_: int					):






            '''simple docstring'''




            if not 0 <= index < len(self					):
                 raise ValueError('list index out of range.'					)
            for i, node in enumerate(self					):
                 if i == index:
                      return node
            return None







       def __setitem__(			self: int,A_: int,A_: Any					):






            '''simple docstring'''




            if not 0 <= index < len(self					):
                 raise ValueError('list index out of range.'					)
            __UpperCamelCase =			self.head
            for _ in range(A_					):
                 __UpperCamelCase =			current.next
            __UpperCamelCase =			data







       def 		snake_case_	(			self: Union[str, Any],A_: Any					):






            '''simple docstring'''




            self.insert_nth(len(self					),A_					)







       def 		snake_case_	(			self: List[Any],A_: Any					):






            '''simple docstring'''




            self.insert_nth(0,A_					)







       def 		snake_case_	(			self: Optional[Any],A_: int,A_: Any					):






            '''simple docstring'''




            if not 0 <= index <= len(self					):
                 raise IndexError('list index out of range'					)
            __UpperCamelCase =			Node(A_					)
            if self.head is None:
                 __UpperCamelCase =			new_node
            elif index == 0:
                 __UpperCamelCase =			self.head  # link new_node to head
                 __UpperCamelCase =			new_node
            else:
                 __UpperCamelCase =			self.head
                 for _ in range(index - 1					):
                      __UpperCamelCase =			temp.next
                 __UpperCamelCase =			temp.next
                 __UpperCamelCase =			new_node







       def 		snake_case_	(			self: str					):  # print every node data






            '''simple docstring'''




            print(self					)







       def 		snake_case_	(			self: int					):






            '''simple docstring'''




            return self.delete_nth(0					)







       def 		snake_case_	(			self: str					):  # delete from tail






            '''simple docstring'''




            return self.delete_nth(len(self					) - 1					)







       def 		snake_case_	(			self: Any,A_: int = 0					):






            '''simple docstring'''




            if not 0 <= index <= len(self					) - 1:  # test if index is valid
                 raise IndexError('List index out of range.'					)
            __UpperCamelCase =			self.head  # default first node
            if index == 0:
                 __UpperCamelCase =			self.head.next
            else:
                 __UpperCamelCase =			self.head
                 for _ in range(index - 1					):
                      __UpperCamelCase =			temp.next
                 __UpperCamelCase =			temp.next
                 __UpperCamelCase =			temp.next.next
            return delete_node.data







       def 		snake_case_	(			self: Any					):






            '''simple docstring'''




            return self.head is None







       def 		snake_case_	(			self: Optional[int]					):






            '''simple docstring'''




            __UpperCamelCase =			None
            __UpperCamelCase =			self.head

            while current:
                 # Store the current node's next node.
                 __UpperCamelCase =			current.next
                 # Make the current node's next point backwards
                 __UpperCamelCase =			prev
                 # Make the previous node be the current node
                 __UpperCamelCase =			current
                 # Make the current node the next node (to progress iteration)
                 __UpperCamelCase =			next_node
            # Return prev in order to put the head at the end
            __UpperCamelCase =			prev






def 		_A		(		)					-> None:


     """simple docstring"""


     __UpperCamelCase =			LinkedList()
     assert linked_list.is_empty() is True
     assert str(_lowercase ) == ""

     try:
          linked_list.delete_head()
          raise AssertionError  # This should not happen.
     except IndexError:
          assert True  # This should happen.

     try:
          linked_list.delete_tail()
          raise AssertionError  # This should not happen.
     except IndexError:
          assert True  # This should happen.

     for i in range(10 ):
          assert len(_lowercase ) == i
          linked_list.insert_nth(_lowercase					,  i + 1 )
     assert str(_lowercase ) == "->".join(str(_lowercase ) for i in range(1					,  11 ) )

     linked_list.insert_head(0 )
     linked_list.insert_tail(11 )
     assert str(_lowercase ) == "->".join(str(_lowercase ) for i in range(0					,  12 ) )

     assert linked_list.delete_head() == 0
     assert linked_list.delete_nth(9 ) == 10
     assert linked_list.delete_tail() == 11
     assert len(_lowercase ) == 9
     assert str(_lowercase ) == "->".join(str(_lowercase ) for i in range(1					,  10 ) )

     assert all(linked_list[i] == i + 1 for i in range(0					,  9 ) ) is True

     for i in range(0					,  9 ):
          __UpperCamelCase =			-i
     assert all(linked_list[i] == -i for i in range(0					,  9 ) ) is True

     linked_list.reverse()
     assert str(_lowercase ) == "->".join(str(_lowercase ) for i in range(-8					,  1 ) )






def 		_A		(		)					-> None:


     """simple docstring"""


     __UpperCamelCase =			[
         -9,
         1_00,
         Node(77_34_51_12 ),
         'dlrow olleH',
         7,
         55_55,
         0,
         -1_92.5_55_55,
         'Hello, world!',
         77.9,
         Node(10 ),
         None,
         None,
         12.20,
     ]
     __UpperCamelCase =			LinkedList()

     for i in test_input:
          linked_list.insert_tail(_lowercase )

     # Check if it's empty or not
     assert linked_list.is_empty() is False
     assert (
         str(_lowercase ) == "-9->100->Node(77345112)->dlrow olleH->7->5555->0->"
         "-192.55555->Hello, world!->77.9->Node(10)->None->None->12.2"
     )

     # Delete the head
     __UpperCamelCase =			linked_list.delete_head()
     assert result == -9
     assert (
         str(_lowercase ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
         "Hello, world!->77.9->Node(10)->None->None->12.2"
     )

     # Delete the tail
     __UpperCamelCase =			linked_list.delete_tail()
     assert result == 12.2
     assert (
         str(_lowercase ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
         "Hello, world!->77.9->Node(10)->None->None"
     )

     # Delete a node in specific location in linked list
     __UpperCamelCase =			linked_list.delete_nth(10 )
     assert result is None
     assert (
         str(_lowercase ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
         "Hello, world!->77.9->Node(10)->None"
     )

     # Add a Node instance to its head
     linked_list.insert_head(Node('Hello again, world!' ) )
     assert (
         str(_lowercase )
         == "Node(Hello again, world!)->100->Node(77345112)->dlrow olleH->"
         "7->5555->0->-192.55555->Hello, world!->77.9->Node(10)->None"
     )

     # Add None to its tail
     linked_list.insert_tail(_lowercase )
     assert (
         str(_lowercase )
         == "Node(Hello again, world!)->100->Node(77345112)->dlrow olleH->"
         "7->5555->0->-192.55555->Hello, world!->77.9->Node(10)->None->None"
     )

     # Reverse the linked list
     linked_list.reverse()
     assert (
         str(_lowercase )
         == "None->None->Node(10)->77.9->Hello, world!->-192.55555->0->5555->"
         "7->dlrow olleH->Node(77345112)->100->Node(Hello again, world!)"
     )






def 		_A		(		)					-> List[str]:


     """simple docstring"""


     from doctest import testmod

     testmod()

     __UpperCamelCase =			LinkedList()
     linked_list.insert_head(input('Inserting 1st at head ' ).strip() )
     linked_list.insert_head(input('Inserting 2nd at head ' ).strip() )
     print('\nPrint list:' )
     linked_list.print_list()
     linked_list.insert_tail(input('\nInserting 1st at tail ' ).strip() )
     linked_list.insert_tail(input('Inserting 2nd at tail ' ).strip() )
     print('\nPrint list:' )
     linked_list.print_list()
     print('\nDelete head' )
     linked_list.delete_head()
     print('Delete tail' )
     linked_list.delete_tail()
     print('\nPrint list:' )
     linked_list.print_list()
     print('\nReverse linked list' )
     linked_list.reverse()
     print('\nPrint list:' )
     linked_list.print_list()
     print('\nString representation of linked list:' )
     print(_lowercase )
     print('\nReading/changing Node data using indexing:' )
     print(f'''Element at Position 1: {linked_list[1]}''' )
     __UpperCamelCase =			input('Enter New Value: ' ).strip()
     print('New list:' )
     print(_lowercase )
     print(f'''length of linked_list is : {len(_lowercase )}''' )


if __name__ == "__main__":
    main()


