code: 
  
  
  
  
  
  
  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
  
  
  SCREAMING_SNAKE_CASE__		:       Union[str, Any]   							=							logging.get_logger(__name__)
  
  SCREAMING_SNAKE_CASE__		:       Optional[int]   							=							{
      """vocab_file""": """vocab.json""",
      """merges_file""": """merges.txt""",
  }
  
  SCREAMING_SNAKE_CASE__		:       Dict   							=							{
      """vocab_file""": {
          """roberta-base""": """https://huggingface.co/roberta-base/resolve/main/vocab.json""",
          """roberta-large""": """https://huggingface.co/roberta-large/resolve/main/vocab.json""",
          """roberta-large-mnli""": """https://huggingface.co/roberta-large-mnli/resolve/main/vocab.json""",
          """distilroberta-base""": """https://huggingface.co/distilroberta-base/resolve/main/vocab.json""",
          """roberta-base-openai-detector""": """https://huggingface.co/roberta-base-openai-detector/resolve/main/vocab.json""",
          """roberta-large-openai-detector""": (
              """https://huggingface.co/roberta-large-openai-detector/resolve/main/vocab.json"""
          ),
      },
      """merges_file""": {
          """roberta-base""": """https://huggingface.co/roberta-base/resolve/main/merges.txt""",
          """roberta-large""": """https://huggingface.co/roberta-large/resolve/main/merges.txt""",
          """roberta-large-mnli""": """https://huggingface.co/roberta-large-mnli/resolve/main/merges.txt""",
          """distilroberta-base""": """https://huggingface.co/distilroberta-base/resolve/main/merges.txt""",
          """roberta-base-openai-detector""": """https://huggingface.co/roberta-base-openai-detector/resolve/main/merges.txt""",
          """roberta-large-openai-detector""": (
              """https://huggingface.co/roberta-large-openai-detector/resolve/main/merges.txt"""
          ),
      },
  }
  
  SCREAMING_SNAKE_CASE__		:       Any   							=							{
      """roberta-base""": 5_12,
      """roberta-large""": 5_12,
      """roberta-large-mnli""": 5_12,
      """distilroberta-base""": 5_12,
      """roberta-base-openai-detector""": 5_12,
      """roberta-large-openai-detector""": 5_12,
  }
  
  
  
  
  
  @lru_cache()
  def    _lowerCamelCase	(	)   -> Any:
  
       '''simple docstring'''
       UpperCAmelCase__			:     Optional[Any]										= (
           list(range(ord("""!"""					)   ,       ord("""~"""					) + 1					)					) + list(range(ord("""¡"""					)   ,       ord("""¬"""					) + 1					)					) + list(range(ord("""®"""					)   ,       ord("""ÿ"""					) + 1					)					)
       )
       UpperCAmelCase__			:     Union[str, Any]										= bs[:]
       UpperCAmelCase__			:     str										= 0
       for b in range(2**8					):
            if b not in bs:
                 bs.append(_A					)
                 cs.append(2**8 + n					)
                 n += 1
       UpperCAmelCase__			:     int										= [chr(_A					) for n in cs]
       return dict(zip(_A   ,       _A					)					)
  
  
  
  
  
  def    _lowerCamelCase	(	__lowerCamelCase					)   -> Optional[Any]:
  
       '''simple docstring'''
       UpperCAmelCase__			:     List[Any]										= set()
       UpperCAmelCase__			:     str										= word[0]
       for char in word[1:]:
            pairs.add((prev_char, char)					)
            UpperCAmelCase__			:     Optional[int]										= char
       return pairs
  
  
  
  
  
  
  
  class 							UpperCAmelCase_     (		lowerCamelCase__		):
       __lowerCamelCase										=     VOCAB_FILES_NAMES
       __lowerCamelCase										=     PRETRAINED_VOCAB_FILES_MAP
       __lowerCamelCase										=     PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
       __lowerCamelCase										=     ['input_ids', 'attention_mask']
  
  
  
  
       def __init__(							self  ,	_lowerCAmelCase  ,	_lowerCAmelCase  ,	_lowerCAmelCase="replace"  ,	_lowerCAmelCase="<s>"  ,	_lowerCAmelCase="</s>"  ,	_lowerCAmelCase="</s>"  ,	_lowerCAmelCase="<s>"  ,	_lowerCAmelCase="<unk>"  ,	_lowerCAmelCase="<pad>"  ,	_lowerCAmelCase="<mask>"  ,	_lowerCAmelCase=False  ,	**_lowerCAmelCase  ,	):
            UpperCAmelCase__			:     List[Any]										= AddedToken(lowercase_  ,	lstrip=lowercase_  ,	rstrip=lowercase_		) if isinstance(lowercase_  ,	lowercase_		) else bos_token
            UpperCAmelCase__			:     str										= AddedToken(lowercase_  ,	lstrip=lowercase_  ,	rstrip=lowercase_		) if isinstance(lowercase_  ,	lowercase_		) else eos_token
            UpperCAmelCase__			:     Dict										= AddedToken(lowercase_  ,	lstrip=lowercase_  ,	rstrip=lowercase_		) if isinstance(lowercase_  ,	lowercase_		) else sep_token
            UpperCAmelCase__			:     str										= AddedToken(lowercase_  ,	lstrip=lowercase_  ,	rstrip=lowercase_		) if isinstance(lowercase_  ,	lowercase_		) else cls_token
            UpperCAmelCase__			:     int										= AddedToken(lowercase_  ,	lstrip=lowercase_  ,	rstrip=lowercase_		) if isinstance(lowercase_  ,	lowercase_		) else unk_token
            UpperCAmelCase__			:     str										= AddedToken(lowercase_  ,	lstrip=lowercase_  ,	rstrip=lowercase_		) if isinstance(lowercase_  ,	lowercase_		) else pad_token
  
            # Mask token behave like a normal word, i.e. include the space before it
            UpperCAmelCase__			:     Tuple										= AddedToken(lowercase_  ,	lstrip=lowercase_  ,	rstrip=lowercase_		) if isinstance(lowercase_  ,	lowercase_		) else mask_token
  
            super().__init__(
                errors=lowercase_  ,	bos_token=lowercase_  ,	eos_token=lowercase_  ,	unk_token=lowercase_  ,	sep_token=lowercase_  ,	cls_token=lowercase_  ,	pad_token=lowercase_  ,	mask_token=lowercase_  ,	add_prefix_space=lowercase_  ,	**lowercase_  ,	)
  
            with open(lowercase_  ,	encoding="""utf-8"""		) as vocab_handle:
                 UpperCAmelCase__			:     str										= json.load(lowercase_		)
            UpperCAmelCase__			:     List[str]										= {v: k for k, v in self.encoder.items()}
            UpperCAmelCase__			:     Any										= errors  # how to handle errors in decoding
            UpperCAmelCase__			:     int										= bytes_to_unicode()
            UpperCAmelCase__			:     int										= {v: k for k, v in self.byte_encoder.items()}
            with open(lowercase_  ,	encoding="""utf-8"""		) as merges_handle:
                 UpperCAmelCase__			:     Optional[int]										= merges_handle.read().split("""\n"""		)[1:-1]
            UpperCAmelCase__			:     Tuple										= [tuple(merge.split()		) for merge in bpe_merges]
            UpperCAmelCase__			:     Union[str, Any]										= dict(zip(lowercase_  ,	range(len(lowercase_		)		)		)		)
            UpperCAmelCase__			:     Tuple										= {}
            UpperCAmelCase__			:     Tuple										= add_prefix_space
  
            # Should have added re.IGNORECASE so BPE merges can happen for capitalized versions of contractions
            UpperCAmelCase__			:     List[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		):
            return len(self.encoder		)
  
  
  
  
       def      __UpperCAmelCase     (							self		):
            return dict(self.encoder  ,	**self.added_tokens_encoder		)
  
  
  
  
       def      __UpperCAmelCase     (							self  ,	_lowerCAmelCase		):
  
  
  
  
  
  
            if token in self.cache:
                 return self.cache[token]
            UpperCAmelCase__			:     Dict										= tuple(lowercase_		)
            UpperCAmelCase__			:     str										= get_pairs(lowercase_		)
  
            if not pairs:
                 return token
  
            while True:
                 UpperCAmelCase__			:     Union[str, Any]										= min(lowercase_  ,	key=lambda _lowerCAmelCase		: self.bpe_ranks.get(lowercase_  ,	float("""inf"""		)		)		)
                 if bigram not in self.bpe_ranks:
                      break
                 UpperCAmelCase__			,		UpperCAmelCase__			:     int										= bigram
                 UpperCAmelCase__			:     Optional[int]										= []
                 UpperCAmelCase__			:     Tuple										= 0
                 while i < len(lowercase_		):
                      try:
                           UpperCAmelCase__			:     Dict										= word.index(lowercase_  ,	lowercase_		)
                      except ValueError:
                           new_word.extend(word[i:]		)
                           break
                      else:
                           new_word.extend(word[i:j]		)
                           UpperCAmelCase__			:     Dict										= j
  
                      if word[i] == first and i < len(lowercase_		) - 1 and word[i + 1] == second:
                           new_word.append(first + second		)
                           i += 2
                      else:
                           new_word.append(word[i]		)
                           i += 1
                 UpperCAmelCase__			:     List[Any]										= tuple(lowercase_		)
                 UpperCAmelCase__			:     Optional[Any]										= new_word
                 if len(lowercase_		) == 1:
                      break
                 else:
                      UpperCAmelCase__			:     Union[str, Any]										= get_pairs(lowercase_		)
            UpperCAmelCase__			:     int										= """ """.join(lowercase_		)
            UpperCAmelCase__			:     Dict										= word
            return word
  
  
  
  
       def      __UpperCAmelCase     (							self  ,	_lowerCAmelCase		):
            UpperCAmelCase__			:     Union[str, Any]										= []
            for token in re.findall(self.pat  ,	lowercase_		):
                 UpperCAmelCase__			:     int										= """""".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(lowercase_		).split(""" """		)		)
            return bpe_tokens
  
  
  
  
       def      __UpperCAmelCase     (							self  ,	_lowerCAmelCase		):
            return self.encoder.get(lowercase_  ,	self.encoder.get(self.unk_token		)		)
  
  
  
  
       def      __UpperCAmelCase     (							self  ,	_lowerCAmelCase		):
            return self.decoder.get(lowercase_		)
  
  
  
  
       def      __UpperCAmelCase     (							self  ,	_lowerCAmelCase		):
            UpperCAmelCase__			:     List[Any]										= """""".join(lowercase_		)
            UpperCAmelCase__			:     Optional[Any]										= bytearray([self.byte_decoder[c] for c in text]		).decode("""utf-8"""  ,	errors=self.errors		)
            return text
  
  
  
  
       def      __UpperCAmelCase     (							self  ,	_lowerCAmelCase  ,	_lowerCAmelCase = None		):
  
  
  
  
  
  
            if not os.path.isdir(lowercase_		):
                 logger.error(f"Vocabulary path ({save_directory}) should be a directory"		)
                 return
            UpperCAmelCase__			:     Optional[int]										= os.path.join(
                lowercase_  ,	(filename_prefix + """-""" if filename_prefix else """""") + VOCAB_FILES_NAMES["""vocab_file"""]		)
            UpperCAmelCase__			:     Any										= os.path.join(
                lowercase_  ,	(filename_prefix + """-""" if filename_prefix else """""") + VOCAB_FILES_NAMES["""merges_file"""]		)
  
            with open(lowercase_  ,	"""w"""  ,	encoding="""utf-8"""		) as f:
                 f.write(json.dumps(self.encoder  ,	indent=2  ,	sort_keys=lowercase_  ,	ensure_ascii=lowercase_		) + """\n"""		)
  
            UpperCAmelCase__			:     int										= 0
            with open(lowercase_  ,	"""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 _lowerCAmelCase		: 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__			:     int										= token_index
                      writer.write(""" """.join(lowercase_		) + """\n"""		)
                      index += 1
  
            return vocab_file, merge_file
  
  
  
  
       def      __UpperCAmelCase     (							self  ,	_lowerCAmelCase  ,	_lowerCAmelCase = None		):
  
  
  
  
  
  
            if token_ids_a is None:
                 return [self.cls_token_id] + token_ids_a + [self.sep_token_id]
            UpperCAmelCase__			:     int										= [self.cls_token_id]
            UpperCAmelCase__			:     Dict										= [self.sep_token_id]
            return cls + token_ids_a + sep + sep + token_ids_a + sep
  
  
  
  
       def      __UpperCAmelCase     (							self  ,	_lowerCAmelCase  ,	_lowerCAmelCase = None  ,	_lowerCAmelCase = False		):
  
  
  
  
  
  
            if already_has_special_tokens:
                 return super().get_special_tokens_mask(
                     token_ids_a=lowercase_  ,	token_ids_a=lowercase_  ,	already_has_special_tokens=lowercase_		)
  
            if token_ids_a is None:
                 return [1] + ([0] * len(lowercase_		)) + [1]
            return [1] + ([0] * len(lowercase_		)) + [1, 1] + ([0] * len(lowercase_		)) + [1]
  
  
  
  
       def      __UpperCAmelCase     (							self  ,	_lowerCAmelCase  ,	_lowerCAmelCase = None		):
            UpperCAmelCase__			:     Union[str, Any]										= [self.sep_token_id]
            UpperCAmelCase__			:     Any										= [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  ,	_lowerCAmelCase  ,	_lowerCAmelCase=False  ,	**_lowerCAmelCase		):
            UpperCAmelCase__			:     Tuple										= kwargs.pop("""add_prefix_space"""  ,	self.add_prefix_space		)
            if (is_split_into_words or add_prefix_space) and (len(lowercase_		) > 0 and not text[0].isspace()):
                 UpperCAmelCase__			:     Optional[int]										= """ """ + text
            return (text, kwargs)
  
  
  
  
  
  
  
style_context: 
  
  
  
  
  
  
  from ..utils import requires_backends
  
  
  SCREAMING_SNAKE_CASE__		:       int   							=							None
  
  
  
  
  
  
  
  class 							UpperCAmelCase_     :
  
  
  
  
       def __init__(							self  ,	*_lowerCAmelCase  ,	**_lowerCAmelCase		):
            requires_backends(self  ,	["""detectron2"""]		)
  
  
  
  
       @classmethod
       def      __UpperCAmelCase     (							cls  ,	*_lowerCAmelCase  ,	**_lowerCAmelCase		):
            requires_backends(cls  ,	["""detectron2"""]		)
  
  
  
  
  
  
  