

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

from ...tokenization_utils import PreTrainedTokenizer
from ...utils import logging


_UpperCamelCase     =    logging.get_logger(__name__)

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

_UpperCamelCase     =    {
    '''vocab_file''': {
        '''microsoft/biogpt''': '''https://huggingface.co/microsoft/biogpt/resolve/main/vocab.json''',
    },
    '''merges_file''': {'''microsoft/biogpt''': '''https://huggingface.co/microsoft/biogpt/resolve/main/merges.txt'''},
}

_UpperCamelCase     =    {
    '''microsoft/biogpt''': 1024,
}
def 		UpperCamelCase_(    snake_case__:						Optional[int]     ) ->				str:
 UpperCAmelCase__           =       set()
 UpperCAmelCase__           =       word[0]
 for char in word[1:]:
  pairs.add((prev_char, char)     )
  UpperCAmelCase__           =       char
 return pairs







class 					lowercase		( _UpperCamelCase      ):



 '''simple docstring'''


 __SCREAMING_SNAKE_CASE      							=       VOCAB_FILES_NAMES
 __SCREAMING_SNAKE_CASE      							=       PRETRAINED_VOCAB_FILES_MAP
 __SCREAMING_SNAKE_CASE      							=       PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
 __SCREAMING_SNAKE_CASE      							=       ["""input_ids""", """attention_mask"""]




 def __init__(self , __a , __a , __a="<unk>" , __a="<s>" , __a="</s>" , __a="</s>" , __a="<pad>" , **__a , )				->      Optional[Any]:






  """simple docstring"""





  super().__init__(
      bos_token=__a , eos_token=__a , sep_token=__a , unk_token=__a , pad_token=__a , **__a , )

  try:
   import sacremoses
  except ImportError:
   raise ImportError(
       'You need to install sacremoses to use BioGptTokenizer. '
       'See https://pypi.org/project/sacremoses/ for installation.'				)

  UpperCAmelCase__           =       'en'
  UpperCAmelCase__           =       sacremoses
  # cache of sm.MosesTokenizer instance
  UpperCAmelCase__           =       {}
  UpperCAmelCase__           =       {}
  with open(__a , encoding='utf-8'				) as vocab_handle:
   UpperCAmelCase__           =       json.load(__a				)
  UpperCAmelCase__           =       {v: k for k, v in self.encoder.items()}
  with open(__a , encoding='utf-8'				) as merges_handle:
   UpperCAmelCase__           =       merges_handle.read().split('\n'				)[:-1]
  UpperCAmelCase__           =       [tuple(merge.split()[:2]				) for merge in merges]
  UpperCAmelCase__           =       dict(zip(__a , range(len(__a				)				)				)				)
  UpperCAmelCase__           =       {}




 @property
 def 						UpperCamelCase__							(self				)				->      Optional[int]:






  """simple docstring"""





  return len(self.encoder				)




 def 						UpperCamelCase__							(self				)				->      List[Any]:






  """simple docstring"""





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




 def 						UpperCamelCase__							(self , __a , __a				)				->      Union[str, Any]:






  """simple docstring"""





  if lang not in self.cache_moses_tokenizer:
   UpperCAmelCase__           =       self.sm.MosesTokenizer(lang=__a				)
   UpperCAmelCase__           =       moses_tokenizer
  return self.cache_moses_tokenizer[lang].tokenize(
      __a , aggressive_dash_splits=__a , return_str=__a , escape=__a				)




 def 						UpperCamelCase__							(self , __a , __a				)				->      Union[str, Any]:






  """simple docstring"""





  if lang not in self.cache_moses_detokenizer:
   UpperCAmelCase__           =       self.sm.MosesDetokenizer(lang=__a				)
   UpperCAmelCase__           =       moses_detokenizer
  return self.cache_moses_detokenizer[lang].detokenize(__a				)




 def 						UpperCamelCase__							(self , __a				)				->      Tuple:






  """simple docstring"""





  UpperCAmelCase__           =       tuple(token[:-1]				) + (token[-1] + '</w>',)
  if token in self.cache:
   return self.cache[token]
  UpperCAmelCase__           =       get_pairs(__a				)

  if not pairs:
   return token + "</w>"

  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				)
  if word == "\n  </w>":
   UpperCAmelCase__           =       '\n</w>'
  UpperCAmelCase__           =       word
  return word




 def 						UpperCamelCase__							(self , __a , __a=False				)				->      List[Any]:






  """simple docstring"""





  if bypass_tokenizer:
   UpperCAmelCase__           =       text.split()
  else:
   UpperCAmelCase__           =       self.moses_tokenize(__a , self.lang				)

  UpperCAmelCase__           =       []
  for token in text:
   if token:
    split_tokens.extend(list(self.bpe(__a				).split(' '				)				)				)

  return split_tokens




 def 						UpperCamelCase__							(self , __a				)				->      int:






  """simple docstring"""





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




 def 						UpperCamelCase__							(self , __a				)				->      List[Any]:






  """simple docstring"""





  return self.decoder.get(__a , self.unk_token				)




 def 						UpperCamelCase__							(self , __a				)				->      Optional[Any]:






  """simple docstring"""





  UpperCAmelCase__           =       [t.replace(' ' , ''				).replace('</w>' , ' '				) for t in tokens]
  UpperCAmelCase__           =       ''.join(__a				).split()
  # detokenize
  UpperCAmelCase__           =       self.moses_detokenize(__a , self.lang				)
  return text




 def 						UpperCamelCase__							(self , __a , __a = None				)				->      List[int]:






  """simple docstring"""





  if token_ids_a is None:
   return [self.sep_token_id] + token_ids_a
  UpperCAmelCase__           =       [self.sep_token_id]
  return sep + token_ids_a + sep + token_ids_a




 def 						UpperCamelCase__							(self , __a , __a = None , __a = False				)				->      List[int]:






  """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				)
  # no bos used in fairseq
  if token_ids_a is not None:
   return [1] + ([0] * len(__a				)) + [1] + ([0] * len(__a				))
  return [1] + ([0] * len(__a				))




 def 						UpperCamelCase__							(self , __a , __a = None				)				->      List[int]:






  """simple docstring"""





  UpperCAmelCase__           =       [self.sep_token_id]

  # no bos used in fairseq
  if token_ids_a is None:
   return len(token_ids_a + sep				) * [0]
  return len(token_ids_a + sep				) * [0] + len(token_ids_a + sep				) * [1]




 def 						UpperCamelCase__							(self , __a , __a = None				)				->      Tuple[str]:






  """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:
   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 __getstate__(self				)				->      Dict:






  """simple docstring"""





  UpperCAmelCase__           =       self.__dict__.copy()
  UpperCAmelCase__           =       None
  return state




 def __setstate__(self , __a				)				->      Any:






  """simple docstring"""





  UpperCAmelCase__           =       d

  try:
   import sacremoses
  except ImportError:
   raise ImportError(
       'You need to install sacremoses to use XLMTokenizer. '
       'See https://pypi.org/project/sacremoses/ for installation.'				)

  UpperCAmelCase__           =       sacremoses






def 		UpperCamelCase_(    snake_case__:						int     ) ->				int:
 if not isinstance(snake_case__						,					snake_case__     ):
  UpperCAmelCase__           =       f"Input value of [number={number}] must be an integer"
  raise TypeError(snake_case__     )
 if number < 1:
  raise ValueError('Input must be a positive integer'     )
 return number * (2 * number - 1)


if __name__ == "__main__":
 import doctest

 doctest.testmod()



