



'''simple docstring'''





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


_lowerCAmelCase										=     logging.get_logger(__name__)


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

# See all BART models at https://huggingface.co/models?filter=bart
_lowerCAmelCase										=     {
    '''vocab_file''': {
        '''facebook/bart-base''': '''https://huggingface.co/facebook/bart-base/resolve/main/vocab.json''',
        '''facebook/bart-large''': '''https://huggingface.co/facebook/bart-large/resolve/main/vocab.json''',
        '''facebook/bart-large-mnli''': '''https://huggingface.co/facebook/bart-large-mnli/resolve/main/vocab.json''',
        '''facebook/bart-large-cnn''': '''https://huggingface.co/facebook/bart-large-cnn/resolve/main/vocab.json''',
        '''facebook/bart-large-xsum''': '''https://huggingface.co/facebook/bart-large-xsum/resolve/main/vocab.json''',
        '''yjernite/bart_eli5''': '''https://huggingface.co/yjernite/bart_eli5/resolve/main/vocab.json''',
    },
    '''merges_file''': {
        '''facebook/bart-base''': '''https://huggingface.co/facebook/bart-base/resolve/main/merges.txt''',
        '''facebook/bart-large''': '''https://huggingface.co/facebook/bart-large/resolve/main/merges.txt''',
        '''facebook/bart-large-mnli''': '''https://huggingface.co/facebook/bart-large-mnli/resolve/main/merges.txt''',
        '''facebook/bart-large-cnn''': '''https://huggingface.co/facebook/bart-large-cnn/resolve/main/merges.txt''',
        '''facebook/bart-large-xsum''': '''https://huggingface.co/facebook/bart-large-xsum/resolve/main/merges.txt''',
        '''yjernite/bart_eli5''': '''https://huggingface.co/yjernite/bart_eli5/resolve/main/merges.txt''',
    },
}

_lowerCAmelCase										=     {
    '''facebook/bart-base''': 1024,
    '''facebook/bart-large''': 1024,
    '''facebook/bart-large-mnli''': 1024,
    '''facebook/bart-large-cnn''': 1024,
    '''facebook/bart-large-xsum''': 1024,
    '''yjernite/bart_eli5''': 1024,
}
@lru_cache()
def        _SCREAMING_SNAKE_CASE  (	):



    """simple docstring"""





    lowerCAmelCase__			:  Union[str, Any]											= (
        list(range(ord("""!"""      )							,   ord("""~"""      ) + 1      )      ) + list(range(ord("""¡"""      )							,   ord("""¬"""      ) + 1      )      ) + list(range(ord("""®"""      )							,   ord("""ÿ"""      ) + 1      )      )
    )
    lowerCAmelCase__			:  Optional[int]											= bs[:]
    lowerCAmelCase__			:  int											= 0
    for b in range(2**8      ):
        if b not in bs:
            bs.append(UpperCamelCase      )
            cs.append(2**8 + n      )
            n += 1
    lowerCAmelCase__			:  Union[str, Any]											= [chr(UpperCamelCase      ) for n in cs]
    return dict(zip(UpperCamelCase							,   UpperCamelCase      )      )
def        _SCREAMING_SNAKE_CASE  (	UpperCamelCase      ):



    """simple docstring"""





    lowerCAmelCase__			:  Dict											= set()
    lowerCAmelCase__			:  List[str]											= word[0]
    for char in word[1:]:
        pairs.add((prev_char, char)      )
        lowerCAmelCase__			:  Dict											= char
    return pairs






class 	lowerCAmelCase_(    SCREAMING_SNAKE_CASE_					):
  '''simple docstring'''




  __lowercase							:				str           =				VOCAB_FILES_NAMES
  __lowercase							:				List[str]           =				PRETRAINED_VOCAB_FILES_MAP
  __lowercase							:				Union[str, Any]           =				PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
  __lowercase							:				List[Any]           =				['''input_ids''', '''attention_mask''']




  def __init__(   self  ,__UpperCAmelCase  ,__UpperCAmelCase  ,__UpperCAmelCase="replace"  ,__UpperCAmelCase="<s>"  ,__UpperCAmelCase="</s>"  ,__UpperCAmelCase="</s>"  ,__UpperCAmelCase="<s>"  ,__UpperCAmelCase="<unk>"  ,__UpperCAmelCase="<pad>"  ,__UpperCAmelCase="<mask>"  ,__UpperCAmelCase=False  ,**__UpperCAmelCase  ,)   ->		str:
      lowerCAmelCase__			:  str											= AddedToken(__UpperCAmelCase  ,lstrip=__UpperCAmelCase  ,rstrip=__UpperCAmelCase				) if isinstance(__UpperCAmelCase  ,__UpperCAmelCase				) else bos_token
      lowerCAmelCase__			:  int											= AddedToken(__UpperCAmelCase  ,lstrip=__UpperCAmelCase  ,rstrip=__UpperCAmelCase				) if isinstance(__UpperCAmelCase  ,__UpperCAmelCase				) else eos_token
      lowerCAmelCase__			:  List[Any]											= AddedToken(__UpperCAmelCase  ,lstrip=__UpperCAmelCase  ,rstrip=__UpperCAmelCase				) if isinstance(__UpperCAmelCase  ,__UpperCAmelCase				) else sep_token
      lowerCAmelCase__			:  List[str]											= AddedToken(__UpperCAmelCase  ,lstrip=__UpperCAmelCase  ,rstrip=__UpperCAmelCase				) if isinstance(__UpperCAmelCase  ,__UpperCAmelCase				) else cls_token
      lowerCAmelCase__			:  Optional[int]											= AddedToken(__UpperCAmelCase  ,lstrip=__UpperCAmelCase  ,rstrip=__UpperCAmelCase				) if isinstance(__UpperCAmelCase  ,__UpperCAmelCase				) else unk_token
      lowerCAmelCase__			:  str											= AddedToken(__UpperCAmelCase  ,lstrip=__UpperCAmelCase  ,rstrip=__UpperCAmelCase				) if isinstance(__UpperCAmelCase  ,__UpperCAmelCase				) else pad_token

      # Mask token behave like a normal word, i.e. include the space before it
      lowerCAmelCase__			:  Optional[int]											= AddedToken(__UpperCAmelCase  ,lstrip=__UpperCAmelCase  ,rstrip=__UpperCAmelCase				) if isinstance(__UpperCAmelCase  ,__UpperCAmelCase				) else mask_token

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

      with open(__UpperCAmelCase  ,encoding="""utf-8"""				) as vocab_handle:
          lowerCAmelCase__			:  Dict											= json.load(__UpperCAmelCase				)
      lowerCAmelCase__			:  Optional[Any]											= {v: k for k, v in self.encoder.items()}
      lowerCAmelCase__			:  Union[str, Any]											= errors  # how to handle errors in decoding
      lowerCAmelCase__			:  List[str]											= bytes_to_unicode()
      lowerCAmelCase__			:  Any											= {v: k for k, v in self.byte_encoder.items()}
      with open(__UpperCAmelCase  ,encoding="""utf-8"""				) as merges_handle:
          lowerCAmelCase__			:  Any											= merges_handle.read().split("""\n"""				)[1:-1]
      lowerCAmelCase__			:  int											= [tuple(merge.split()				) for merge in bpe_merges]
      lowerCAmelCase__			:  Optional[int]											= dict(zip(__UpperCAmelCase  ,range(len(__UpperCAmelCase				)				)				)				)
      lowerCAmelCase__			:  Union[str, Any]											= {}
      lowerCAmelCase__			:  Dict											= add_prefix_space

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




  @property
  def 							UpperCAmelCase_     (   self				)   ->		str:
      return len(self.encoder				)




  def 							UpperCAmelCase_     (   self				)   ->		List[str]:
      return dict(self.encoder  ,**self.added_tokens_encoder				)




  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase				)   ->		str:
      if token in self.cache:
          return self.cache[token]
      lowerCAmelCase__			:  str											= tuple(__UpperCAmelCase				)
      lowerCAmelCase__			:  Optional[int]											= get_pairs(__UpperCAmelCase				)

      if not pairs:
          return token

      while True:
          lowerCAmelCase__			:  str											= min(__UpperCAmelCase  ,key=lambda __UpperCAmelCase				: self.bpe_ranks.get(__UpperCAmelCase  ,float("""inf"""				)				)				)
          if bigram not in self.bpe_ranks:
              break
          lowerCAmelCase__				,       lowerCAmelCase__			:  Optional[int]											= bigram
          lowerCAmelCase__			:  str											= []
          lowerCAmelCase__			:  str											= 0
          while i < len(__UpperCAmelCase				):
              try:
                  lowerCAmelCase__			:  Union[str, Any]											= word.index(__UpperCAmelCase  ,__UpperCAmelCase				)
              except ValueError:
                  new_word.extend(word[i:]				)
                  break
              else:
                  new_word.extend(word[i:j]				)
                  lowerCAmelCase__			:  Any											= j

              if word[i] == first and i < len(__UpperCAmelCase				) - 1 and word[i + 1] == second:
                  new_word.append(first + second				)
                  i += 2
              else:
                  new_word.append(word[i]				)
                  i += 1
          lowerCAmelCase__			:  Any											= tuple(__UpperCAmelCase				)
          lowerCAmelCase__			:  List[str]											= new_word
          if len(__UpperCAmelCase				) == 1:
              break
          else:
              lowerCAmelCase__			:  List[str]											= get_pairs(__UpperCAmelCase				)
      lowerCAmelCase__			:  List[Any]											= """ """.join(__UpperCAmelCase				)
      lowerCAmelCase__			:  Dict											= word
      return word




  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase				)   ->		Any:
      lowerCAmelCase__			:  str											= []
      for token in re.findall(self.pat  ,__UpperCAmelCase				):
          lowerCAmelCase__			:  List[Any]											= """""".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(__UpperCAmelCase				).split(""" """				)				)
      return bpe_tokens




  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase				)   ->		Union[str, Any]:
      return self.encoder.get(__UpperCAmelCase  ,self.encoder.get(self.unk_token				)				)




  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase				)   ->		List[str]:
      return self.decoder.get(__UpperCAmelCase				)




  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase				)   ->		List[str]:
      lowerCAmelCase__			:  Optional[int]											= """""".join(__UpperCAmelCase				)
      lowerCAmelCase__			:  List[Any]											= bytearray([self.byte_decoder[c] for c in text]				).decode("""utf-8"""  ,errors=self.errors				)
      return text




  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase  ,__UpperCAmelCase = None				)   ->		Tuple[str]:
      if not os.path.isdir(__UpperCAmelCase				):
          logger.error(F"""Vocabulary path ({save_directory}) should be a directory"""				)
          return
      lowerCAmelCase__			:  Optional[int]											= os.path.join(
          __UpperCAmelCase  ,(filename_prefix + """-""" if filename_prefix else """""") + VOCAB_FILES_NAMES["""vocab_file"""]				)
      lowerCAmelCase__			:  Optional[Any]											= os.path.join(
          __UpperCAmelCase  ,(filename_prefix + """-""" if filename_prefix else """""") + VOCAB_FILES_NAMES["""merges_file"""]				)

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

      lowerCAmelCase__			:  str											= 0
      with open(__UpperCAmelCase  ,"""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 __UpperCAmelCase				: 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!"""				)
                  lowerCAmelCase__			:  Union[str, Any]											= token_index
              writer.write(""" """.join(__UpperCAmelCase				) + """\n"""				)
              index += 1

      return vocab_file, merge_file




  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase  ,__UpperCAmelCase = None				)   ->		List[int]:
      if token_ids_a is None:
          return [self.cls_token_id] + token_ids_a + [self.sep_token_id]
      lowerCAmelCase__			:  List[Any]											= [self.cls_token_id]
      lowerCAmelCase__			:  int											= [self.sep_token_id]
      return cls + token_ids_a + sep + sep + token_ids_a + sep




  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase  ,__UpperCAmelCase = None  ,__UpperCAmelCase = False				)   ->		List[int]:
      if already_has_special_tokens:
          return super().get_special_tokens_mask(
              token_ids_a=__UpperCAmelCase  ,token_ids_a=__UpperCAmelCase  ,already_has_special_tokens=__UpperCAmelCase				)

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




  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase  ,__UpperCAmelCase = None				)   ->		List[int]:
      lowerCAmelCase__			:  List[str]											= [self.sep_token_id]
      lowerCAmelCase__			:  List[str]											= [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 							UpperCAmelCase_     (   self  ,__UpperCAmelCase  ,__UpperCAmelCase=False  ,**__UpperCAmelCase				)   ->		List[Any]:
      lowerCAmelCase__			:  Dict											= kwargs.pop("""add_prefix_space"""  ,self.add_prefix_space				)
      if (is_split_into_words or add_prefix_space) and (len(__UpperCAmelCase				) > 0 and not text[0].isspace()):
          lowerCAmelCase__			:  List[Any]											= """ """ + text
      return (text, kwargs)







'''simple docstring'''





class 	lowerCAmelCase_:
  '''simple docstring'''




  def __init__(   self  ,__UpperCAmelCase				)   ->		Tuple:
      lowerCAmelCase__			:  Union[str, Any]											= n
      lowerCAmelCase__			:  int											= [None] * self.n
      lowerCAmelCase__			:  Union[str, Any]											= 0  # index of the first element
      lowerCAmelCase__			:  Union[str, Any]											= 0
      lowerCAmelCase__			:  Union[str, Any]											= 0




  def __len__(   self				)   ->		int:
      return self.size




  def 							UpperCAmelCase_     (   self				)   ->		bool:
      return self.size == 0




  def 							UpperCAmelCase_     (   self				)   ->		Optional[Any]:
      return False if self.is_empty() else self.array[self.front]




  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase				)   ->		Union[str, Any]:
      if self.size >= self.n:
          raise Exception("""QUEUE IS FULL"""				)

      lowerCAmelCase__			:  str											= data
      lowerCAmelCase__			:  List[str]											= (self.rear + 1) % self.n
      self.size += 1
      return self






  def 							UpperCAmelCase_     (   self				)   ->		int:
      if self.size == 0:
          raise Exception("""UNDERFLOW"""				)

      lowerCAmelCase__			:  int											= self.array[self.front]
      lowerCAmelCase__			:  Optional[Any]											= None
      lowerCAmelCase__			:  int											= (self.front + 1) % self.n
      self.size -= 1
      return temp


