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

import regex as re

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


__snake_case						=			logging.get_logger(__name__)


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

__snake_case						=			{
    '''vocab_file''': {
        '''facebook/blenderbot_small-90M''': '''https://huggingface.co/facebook/blenderbot_small-90M/resolve/main/vocab.json'''
    },
    '''merges_file''': {
        '''facebook/blenderbot_small-90M''': '''https://huggingface.co/facebook/blenderbot_small-90M/resolve/main/merges.txt'''
    },
    '''tokenizer_config_file''': {
        '''facebook/blenderbot_small-90M''': (
            '''https://huggingface.co/facebook/blenderbot_small-90M/resolve/main/tokenizer_config.json'''
        )
    },
}

__snake_case						=			{'''facebook/blenderbot_small-90M''': 5_12}





def      lowerCAmelCase_       ( __lowerCAmelCase  )->     int:






      '''simple docstring'''





      UpperCAmelCase			:       Optional[int]			     =set()
      UpperCAmelCase			:       Optional[int]			     =word[0]
      for char in word[1:]:
            pairs.add((prev_char, char)  )
            UpperCAmelCase			:       List[Any]			     =char

      UpperCAmelCase			:       Optional[int]			     =set(_A  )
      return pairs







class 	__snake_case      (   lowerCAmelCase__      ):
 __lowerCamelCase			:      str           =					VOCAB_FILES_NAMES
 __lowerCamelCase			:      Optional[int]           =					PRETRAINED_VOCAB_FILES_MAP
 __lowerCamelCase			:      Dict           =					PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
 __lowerCamelCase			:      Any           =					['''input_ids''', '''attention_mask''']
 def __init__(     self						,      snake_case__						,      snake_case__						,      snake_case__="__start__"						,      snake_case__="__end__"						,      snake_case__="__unk__"						,      snake_case__="__null__"						,      **snake_case__						,      )		->							List[Any]:
       '''simple docstring'''





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

       with open(__lowerCAmelCase						,      encoding='''utf-8'''  ) as vocab_handle:
             UpperCAmelCase			:       Optional[int]			     =json.load(__lowerCAmelCase  )
       UpperCAmelCase			:       Optional[Any]			     ={v: k for k, v in self.encoder.items()}
       with open(__lowerCAmelCase						,      encoding='''utf-8'''  ) as merges_handle:
             UpperCAmelCase			:       Any			     =merges_handle.read().split('''\n'''  )[1:-1]
       UpperCAmelCase			:       Optional[int]			     =[tuple(merge.split()  ) for merge in merges]
       UpperCAmelCase			:       List[str]			     =dict(zip(__lowerCAmelCase						,      range(len(__lowerCAmelCase  )  )  )  )
       UpperCAmelCase			:       str			     ={}
 @property
 def 		UpperCAmelCase__				(     self  )		->							Union[str, Any]:
       '''simple docstring'''





       return len(self.encoder  )
 def 		UpperCAmelCase__				(     self  )		->							Union[str, Any]:
       '''simple docstring'''





       return dict(self.encoder						,      **self.added_tokens_encoder  )
 def 		UpperCAmelCase__				(     self						,      snake_case__  )		->							str:
       '''simple docstring'''





       if token in self.cache:
             return self.cache[token]
       UpperCAmelCase			:       str			     =re.sub('''([.,!?()])'''						,      r''' \1'''						,      __lowerCAmelCase  )
       UpperCAmelCase			:       List[Any]			     =re.sub('''(\')'''						,      r''' \1 '''						,      __lowerCAmelCase  )
       UpperCAmelCase			:       List[Any]			     =re.sub(r'''\s{2,}'''						,      ''' '''						,      __lowerCAmelCase  )
       if "\n" in token:
             UpperCAmelCase			:       int			     =token.replace('''\n'''						,      ''' __newln__'''  )

       UpperCAmelCase			:       Dict			     =token.split(''' '''  )
       UpperCAmelCase			:       Union[str, Any]			     =[]
       for token in tokens:
             if not len(__lowerCAmelCase  ):
                   continue

             UpperCAmelCase			:       Optional[Any]			     =token.lower()
             UpperCAmelCase			:       Any			     =tuple(__lowerCAmelCase  )
             UpperCAmelCase			:       List[Any]			     =tuple(list(word[:-1]  ) + [word[-1] + '''</w>''']  )
             UpperCAmelCase			:       str			     =get_pairs(__lowerCAmelCase  )

             if not pairs:
                   words.append(__lowerCAmelCase  )
                   continue

             while True:
                   UpperCAmelCase			:       Union[str, Any]			     =min(__lowerCAmelCase						,      key=lambda snake_case__  : self.bpe_ranks.get(__lowerCAmelCase						,      float('''inf'''  )  )  )
                   if bigram not in self.bpe_ranks:
                         break
                   UpperCAmelCase     ,  UpperCAmelCase			:       Any			     =bigram
                   UpperCAmelCase			:       Union[str, Any]			     =[]
                   UpperCAmelCase			:       Tuple			     =0

                   while i < len(__lowerCAmelCase  ):
                         try:
                               UpperCAmelCase			:       Optional[int]			     =word.index(__lowerCAmelCase						,      __lowerCAmelCase  )
                               new_word.extend(word[i:j]  )
                               UpperCAmelCase			:       Optional[Any]			     =j
                         except ValueError:
                               new_word.extend(word[i:]  )
                               break

                         if word[i] == first and i < len(__lowerCAmelCase  ) - 1 and word[i + 1] == second:
                               new_word.append(first + second  )
                               i += 2
                         else:
                               new_word.append(word[i]  )
                               i += 1
                   UpperCAmelCase			:       Optional[int]			     =tuple(__lowerCAmelCase  )
                   UpperCAmelCase			:       Optional[int]			     =new_word
                   if len(__lowerCAmelCase  ) == 1:
                         break
                   else:
                         UpperCAmelCase			:       Tuple			     =get_pairs(__lowerCAmelCase  )
             UpperCAmelCase			:       List[Any]			     ='''@@ '''.join(__lowerCAmelCase  )
             UpperCAmelCase			:       Any			     =word[:-4]

             UpperCAmelCase			:       List[Any]			     =word
             words.append(__lowerCAmelCase  )
       return " ".join(__lowerCAmelCase  )
 def 		UpperCAmelCase__				(     self						,      snake_case__  )		->							Dict:
       '''simple docstring'''





       UpperCAmelCase			:       int			     =[]

       UpperCAmelCase			:       int			     =re.findall(r'''\S+\n?'''						,      __lowerCAmelCase  )

       for token in words:
             split_tokens.extend(list(self.bpe(__lowerCAmelCase  ).split(''' '''  )  )  )
       return split_tokens
 def 		UpperCAmelCase__				(     self						,      snake_case__  )		->							Optional[Any]:
       '''simple docstring'''





       UpperCAmelCase			:       int			     =token.lower()
       return self.encoder.get(__lowerCAmelCase						,      self.encoder.get(self.unk_token  )  )
 def 		UpperCAmelCase__				(     self						,      snake_case__  )		->							Tuple:
       '''simple docstring'''





       return self.decoder.get(__lowerCAmelCase						,      self.unk_token  )
 def 		UpperCAmelCase__				(     self						,      snake_case__  )		->							Optional[int]:
       '''simple docstring'''





       UpperCAmelCase			:       Union[str, Any]			     =''' '''.join(__lowerCAmelCase  ).replace('''@@ '''						,      ''''''  ).strip()
       return out_string






 def 		UpperCAmelCase__				(     self						,      snake_case__						,      snake_case__ = None  )		->							str:
       '''simple docstring'''





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

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

       UpperCAmelCase			:       Tuple			     =0
       with open(__lowerCAmelCase						,      '''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 snake_case__  : 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			:       str			     =token_index
                   writer.write(''' '''.join(__lowerCAmelCase  ) + '''\n'''  )
                   index += 1

       return vocab_file, merge_file

'''simple docstring'''




def 				snake_case__							(			_A:					str )    ->	list[int]:

		'''simple docstring'''


		lowerCAmelCase   					=  [0 for i in range(len(_A ) )]

		# initialize interval's left pointer and right pointer
		lowerCAmelCase					,     lowerCAmelCase   					=  0, 0

		for i in range(1      ,   len(_A ) ):
				# case when current index is inside the interval
				if i <= right_pointer:
						lowerCAmelCase   					=  min(right_pointer - i + 1      ,   z_result[i - left_pointer] )
						lowerCAmelCase   					=  min_edge

				while go_next(_A      ,   _A      ,   _A ):
						z_result[i] += 1

				# if new index's result gives us more right interval,
				# we've to update left_pointer and right_pointer
				if i + z_result[i] - 1 > right_pointer:
						lowerCAmelCase					,     lowerCAmelCase   					=  i, i + z_result[i] - 1

		return z_result






def 				snake_case__							(			_A:					int      ,   _A:					list[int]      ,   _A:					str )    ->	bool:

		'''simple docstring'''


		return i + z_result[i] < len(_A ) and s[z_result[i]] == s[i + z_result[i]]






def 				snake_case__							(			_A:					str      ,   _A:					str )    ->	int:

		'''simple docstring'''


		lowerCAmelCase   					=  0
		# concatenate 'pattern' and 'input_str' and call z_function
		# with concatenated string
		lowerCAmelCase   					=  z_function(pattern + input_str )

		for val in z_result:
				# if value is greater then length of the pattern string
				# that means this index is starting position of substring
				# which is equal to pattern string
				if val >= len(_A ):
						answer += 1

		return answer


if __name__ == "__main__":
						import doctest

						doctest.testmod()




