import os
import re
from shutil import copyfile
from typing import List, Optional, Tuple

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


lowerCamelCase__  =					logging.get_logger(__name__)

lowerCamelCase__  =					{
    '''vocab_file''': '''vocab.txt''',
    '''merges_file''': '''bpe.codes''',
}

lowerCamelCase__  =					{
    '''vocab_file''': {
        '''vinai/phobert-base''': '''https://huggingface.co/vinai/phobert-base/resolve/main/vocab.txt''',
        '''vinai/phobert-large''': '''https://huggingface.co/vinai/phobert-large/resolve/main/vocab.txt''',
    },
    '''merges_file''': {
        '''vinai/phobert-base''': '''https://huggingface.co/vinai/phobert-base/resolve/main/bpe.codes''',
        '''vinai/phobert-large''': '''https://huggingface.co/vinai/phobert-large/resolve/main/bpe.codes''',
    },
}

lowerCamelCase__  =					{
    '''vinai/phobert-base''': 256,
    '''vinai/phobert-large''': 256,
}


def 				lowerCAmelCase__       (			a__ )      ->Optional[int]:




  '''simple docstring'''

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

  _UpperCamelCase           =    set(_lowercase )
  return pairs







class 					_UpperCAmelCase			(     lowerCAmelCase  ):



 '''simple docstring'''




 __A			       =					VOCAB_FILES_NAMES
 __A			       =					PRETRAINED_VOCAB_FILES_MAP
 __A			       =					PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES







 def __init__(		self				:   Optional[int]							, lowercase_				:   List[Any]							, lowercase_				:   Optional[Any]							, lowercase_				:   Any="<s>"							, lowercase_				:   Optional[int]="</s>"							, lowercase_				:   Optional[int]="</s>"							, lowercase_				:   Any="<s>"							, lowercase_				:   str="<unk>"							, lowercase_				:   Optional[Any]="<pad>"							, lowercase_				:   List[str]="<mask>"							, **lowercase_				:   int							, )						->	Tuple:


   """simple docstring"""







   super().__init__(
       bos_token=SCREAMING_SNAKE_CASE__							, eos_token=SCREAMING_SNAKE_CASE__							, unk_token=SCREAMING_SNAKE_CASE__							, sep_token=SCREAMING_SNAKE_CASE__							, cls_token=SCREAMING_SNAKE_CASE__							, pad_token=SCREAMING_SNAKE_CASE__							, mask_token=SCREAMING_SNAKE_CASE__							, **SCREAMING_SNAKE_CASE__							, )

   _UpperCamelCase           =    vocab_file
   _UpperCamelCase           =    merges_file

   _UpperCamelCase           =    {}
   _UpperCamelCase           =    0
   _UpperCamelCase           =    1
   _UpperCamelCase           =    2
   _UpperCamelCase           =    3

   self.add_from_file(SCREAMING_SNAKE_CASE__)

   _UpperCamelCase           =    {v: k for k, v in self.encoder.items()}

   with open(SCREAMING_SNAKE_CASE__							, encoding="utf-8") as merges_handle:
     _UpperCamelCase           =    merges_handle.read().split("\n")[:-1]
   _UpperCamelCase           =    [tuple(merge.split()[:-1]) for merge in merges]
   _UpperCamelCase           =    dict(zip(SCREAMING_SNAKE_CASE__							, range(len(SCREAMING_SNAKE_CASE__))))
   _UpperCamelCase           =    {}







 def 		__UpperCAmelCase				(		self				:   Tuple							, lowercase_				:   List[int]							, lowercase_				:   Optional[List[int]] = None)						->	int:


   """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 		__UpperCAmelCase				(		self				:   Dict							, lowercase_				:   List[int]							, lowercase_				:   Optional[List[int]] = None							, lowercase_				:   bool = False)						->	List[str]:


   """simple docstring"""







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

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







 def 		__UpperCAmelCase				(		self				:   List[Any]							, lowercase_				:   List[int]							, lowercase_				:   Optional[List[int]] = None)						->	int:


   """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]







 @property
 def 		__UpperCAmelCase				(		self				:   Optional[Any])						->	Optional[Any]:


   """simple docstring"""







   return len(self.encoder)







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


   """simple docstring"""







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







 def 		__UpperCAmelCase				(		self				:   List[Any]							, lowercase_				:   Dict)						->	List[str]:


   """simple docstring"""







   if token in self.cache:
     return self.cache[token]
   _UpperCamelCase           =    tuple(SCREAMING_SNAKE_CASE__)
   _UpperCamelCase           =    tuple(list(word[:-1]) + [word[-1] + "</w>"])
   _UpperCamelCase           =    get_pairs(SCREAMING_SNAKE_CASE__)

   if not pairs:
     return token

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

       if word[i] == first and i < len(SCREAMING_SNAKE_CASE__) - 1 and word[i + 1] == second:
         new_word.append(first + second)
         i += 2
       else:
         new_word.append(word[i])
         i += 1
     _UpperCamelCase           =    tuple(SCREAMING_SNAKE_CASE__)
     _UpperCamelCase           =    new_word
     if len(SCREAMING_SNAKE_CASE__) == 1:
       break
     else:
       _UpperCamelCase           =    get_pairs(SCREAMING_SNAKE_CASE__)
   _UpperCamelCase           =    "@@ ".join(SCREAMING_SNAKE_CASE__)
   _UpperCamelCase           =    word[:-4]
   _UpperCamelCase           =    word
   return word







 def 		__UpperCAmelCase				(		self				:   Optional[int]							, lowercase_				:   Any)						->	Any:


   """simple docstring"""







   _UpperCamelCase           =    []

   _UpperCamelCase           =    re.findall(R"\S+\n?"							, SCREAMING_SNAKE_CASE__)

   for token in words:
     split_tokens.extend(list(self.bpe(SCREAMING_SNAKE_CASE__).split(" ")))
   return split_tokens







 def 		__UpperCAmelCase				(		self				:   int							, lowercase_				:   Dict)						->	Tuple:


   """simple docstring"""







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







 def 		__UpperCAmelCase				(		self				:   Tuple							, lowercase_				:   Dict)						->	Tuple:


   """simple docstring"""







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







 def 		__UpperCAmelCase				(		self				:   Dict							, lowercase_				:   Tuple)						->	Optional[Any]:


   """simple docstring"""







   _UpperCamelCase           =    " ".join(SCREAMING_SNAKE_CASE__).replace("@@ "							, "").strip()
   return out_string







 def 		__UpperCAmelCase				(		self				:   Any							, lowercase_				:   str							, lowercase_				:   Optional[str] = None)						->	Optional[int]:


   """simple docstring"""







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

   if os.path.abspath(self.vocab_file) != os.path.abspath(SCREAMING_SNAKE_CASE__):
     copyfile(self.vocab_file							, SCREAMING_SNAKE_CASE__)

   if os.path.abspath(self.merges_file) != os.path.abspath(SCREAMING_SNAKE_CASE__):
     copyfile(self.merges_file							, SCREAMING_SNAKE_CASE__)

   return out_vocab_file, out_merge_file







 def 		__UpperCAmelCase				(		self				:   List[str]							, lowercase_				:   Any)						->	Tuple:


   """simple docstring"""







   if isinstance(SCREAMING_SNAKE_CASE__							, SCREAMING_SNAKE_CASE__):
     try:
       with open(SCREAMING_SNAKE_CASE__							, "r"							, encoding="utf-8") as fd:
         self.add_from_file(SCREAMING_SNAKE_CASE__)
     except FileNotFoundError as fnfe:
       raise fnfe
     except UnicodeError:
       raise Exception(f'Incorrect encoding detected in {f}, please rebuild the dataset')
     return

   _UpperCamelCase           =    f.readlines()
   for lineTmp in lines:
     _UpperCamelCase           =    lineTmp.strip()
     _UpperCamelCase           =    line.rfind(" ")
     if idx == -1:
       raise ValueError("Incorrect dictionary format, expected \'<token> <cnt>\'")
     _UpperCamelCase           =    line[:idx]
     _UpperCamelCase           =    len(self.encoder)






from functools import lru_cache

@lru_cache
def  __lowerCamelCase					( _lowercase			)       ->      int:
     if num < 0:
          raise ValueError('Number should not be negative.'			)

     return 1 if num in (0, 1) else num * factorial(num - 1			)


if __name__ == "__main__":
 import doctest

 doctest.testmod()


