


'''simple docstring'''



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

import regex as re

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


A__						:   Tuple				=    logging.get_logger(__name__)


A__						:   int				=    {
    """vocab_file""": """vocab.json""",
    """merges_file""": """merges.txt""",
    """tokenizer_config_file""": """tokenizer_config.json""",
}

A__						:   List[Any]				=    {
    """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"""
        )
    },
}

A__						:   Tuple				=    {"""facebook/blenderbot_small-90M""": 512}



def      UpperCAmelCase__   (      UpperCAmelCase_       :							Union[str, Any]				)	->						List[Any]:
     __lowerCamelCase  :      Dict														=						set()
     __lowerCamelCase  :      Optional[int]														=						word[0]
     for char in word[1:]:
          pairs.add((prev_char, char)				)
          __lowerCamelCase  :      Optional[Any]														=						char

     __lowerCamelCase  :      str														=						set(UpperCAmelCase_				)
     return pairs





class   UpperCAmelCase_    (_UpperCAmelCase    ):





    """simple docstring"""






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







    def __init__(				self     ,	SCREAMING_SNAKE_CASE_     ,	SCREAMING_SNAKE_CASE_     ,	SCREAMING_SNAKE_CASE_="__start__"     ,	SCREAMING_SNAKE_CASE_="__end__"     ,	SCREAMING_SNAKE_CASE_="__unk__"     ,	SCREAMING_SNAKE_CASE_="__null__"     ,	**SCREAMING_SNAKE_CASE_     ,	)							->	int:
         super().__init__(unk_token=SCREAMING_SNAKE_CASE_     ,	bos_token=SCREAMING_SNAKE_CASE_     ,	eos_token=SCREAMING_SNAKE_CASE_     ,	pad_token=SCREAMING_SNAKE_CASE_     ,	**SCREAMING_SNAKE_CASE_      )

         with open(SCREAMING_SNAKE_CASE_     ,	encoding='utf-8'      ) as vocab_handle:
              __lowerCamelCase  :      Tuple														=						json.load(SCREAMING_SNAKE_CASE_      )
         __lowerCamelCase  :      Union[str, Any]														=						{v: k for k, v in self.encoder.items()}
         with open(SCREAMING_SNAKE_CASE_     ,	encoding='utf-8'      ) as merges_handle:
              __lowerCamelCase  :      Dict														=						merges_handle.read().split('\n'      )[1:-1]
         __lowerCamelCase  :      int														=						[tuple(merge.split()      ) for merge in merges]
         __lowerCamelCase  :      Optional[int]														=						dict(zip(SCREAMING_SNAKE_CASE_     ,	range(len(SCREAMING_SNAKE_CASE_      )      )      )      )
         __lowerCamelCase  :      Any														=						{}







    @property
    def  lowercase_							(				self      )							->	int:
         return len(self.encoder      )







    def  lowercase_							(				self      )							->	Dict:
         return dict(self.encoder     ,	**self.added_tokens_encoder      )







    def  lowercase_							(				self     ,	SCREAMING_SNAKE_CASE_      )							->	str:
         if token in self.cache:
              return self.cache[token]
         __lowerCamelCase  :      Dict														=						re.sub('([.,!?()])'     ,	r' \1'     ,	SCREAMING_SNAKE_CASE_      )
         __lowerCamelCase  :      Union[str, Any]														=						re.sub('(\')'     ,	r' \1 '     ,	SCREAMING_SNAKE_CASE_      )
         __lowerCamelCase  :      Dict														=						re.sub(r'\s{2,}'     ,	' '     ,	SCREAMING_SNAKE_CASE_      )
         if "\n" in token:
              __lowerCamelCase  :      List[str]														=						token.replace('\n'     ,	' __newln__'      )

         __lowerCamelCase  :      Dict														=						token.split(' '      )
         __lowerCamelCase  :      List[str]														=						[]
         for token in tokens:
              if not len(SCREAMING_SNAKE_CASE_      ):
                   continue

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

              if not pairs:
                   words.append(SCREAMING_SNAKE_CASE_      )
                   continue

              while True:
                   __lowerCamelCase  :      List[Any]														=						min(SCREAMING_SNAKE_CASE_     ,	key=lambda SCREAMING_SNAKE_CASE_      : self.bpe_ranks.get(SCREAMING_SNAKE_CASE_     ,	float('inf'      )      )      )
                   if bigram not in self.bpe_ranks:
                        break
                   __lowerCamelCase							,			__lowerCamelCase  :      Optional[int]														=						bigram
                   __lowerCamelCase  :      Tuple														=						[]
                   __lowerCamelCase  :      Dict														=						0

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

                        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
                   __lowerCamelCase  :      str														=						tuple(SCREAMING_SNAKE_CASE_      )
                   __lowerCamelCase  :      int														=						new_word
                   if len(SCREAMING_SNAKE_CASE_      ) == 1:
                        break
                   else:
                        __lowerCamelCase  :      List[str]														=						get_pairs(SCREAMING_SNAKE_CASE_      )
              __lowerCamelCase  :      Tuple														=						'@@ '.join(SCREAMING_SNAKE_CASE_      )
              __lowerCamelCase  :      Any														=						word[:-4]

              __lowerCamelCase  :      Union[str, Any]														=						word
              words.append(SCREAMING_SNAKE_CASE_      )
         return " ".join(SCREAMING_SNAKE_CASE_      )







    def  lowercase_							(				self     ,	SCREAMING_SNAKE_CASE_      )							->	List[str]:
         __lowerCamelCase  :      Optional[Any]														=						[]

         __lowerCamelCase  :      List[str]														=						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  lowercase_							(				self     ,	SCREAMING_SNAKE_CASE_      )							->	int:
         __lowerCamelCase  :      List[str]														=						token.lower()
         return self.encoder.get(SCREAMING_SNAKE_CASE_     ,	self.encoder.get(self.unk_token      )      )







    def  lowercase_							(				self     ,	SCREAMING_SNAKE_CASE_      )							->	str:
         return self.decoder.get(SCREAMING_SNAKE_CASE_     ,	self.unk_token      )







    def  lowercase_							(				self     ,	SCREAMING_SNAKE_CASE_      )							->	str:
         __lowerCamelCase  :      Tuple														=						' '.join(SCREAMING_SNAKE_CASE_      ).replace('@@ '     ,	''      ).strip()
         return out_string







    def  lowercase_							(				self     ,	SCREAMING_SNAKE_CASE_     ,	SCREAMING_SNAKE_CASE_ = None      )							->	Tuple[str]:
         if not os.path.isdir(SCREAMING_SNAKE_CASE_      ):
              logger.error(f'Vocabulary path ({save_directory}) should be a directory'      )
              return
         __lowerCamelCase  :      Dict														=						os.path.join(
             SCREAMING_SNAKE_CASE_     ,	(filename_prefix + '-' if filename_prefix else '') + VOCAB_FILES_NAMES['vocab_file']      )
         __lowerCamelCase  :      Dict														=						os.path.join(
             SCREAMING_SNAKE_CASE_     ,	(filename_prefix + '-' if filename_prefix else '') + VOCAB_FILES_NAMES['merges_file']      )

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

         __lowerCamelCase  :      int														=						0
         with open(SCREAMING_SNAKE_CASE_     ,	'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 SCREAMING_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!'      )
                        __lowerCamelCase  :      int														=						token_index
                   writer.write(' '.join(SCREAMING_SNAKE_CASE_      ) + '\n'      )
                   index += 1

         return vocab_file, merge_file










'''simple docstring'''



# Lint as: python3
import dataclasses
import re
from dataclasses import dataclass
from functools import total_ordering
from typing import Optional, Union


A__						:   Any				=    re.compile(R"""^(?P<major>\d+)""" R"""\.(?P<minor>\d+)""" R"""\.(?P<patch>\d+)$""")





@total_ordering
@dataclass
class   UpperCAmelCase_    :





    """simple docstring"""






    lowerCamelCase    :   str
    lowerCamelCase    :   Optional[str]					=     None
    lowerCamelCase    :   Optional[Union[str, int]]					=     None
    lowerCamelCase    :   Optional[Union[str, int]]					=     None
    lowerCamelCase    :   Optional[Union[str, int]]					=     None







    def  lowercase_							(				self      )							->	List[str]:
         __lowerCamelCase							,			__lowerCamelCase							,			__lowerCamelCase  :      List[Any]														=						_str_to_version_tuple(self.version_str      )







    def __repr__(				self      )							->	Any:
         return f'{self.tuple[0]}.{self.tuple[1]}.{self.tuple[2]}'







    @property
    def  lowercase_							(				self      )							->	int:
         return self.major, self.minor, self.patch







    def  lowercase_							(				self     ,	SCREAMING_SNAKE_CASE_      )							->	List[Any]:
         if isinstance(SCREAMING_SNAKE_CASE_     ,	SCREAMING_SNAKE_CASE_      ):
              return Version(SCREAMING_SNAKE_CASE_      )
         elif isinstance(SCREAMING_SNAKE_CASE_     ,	SCREAMING_SNAKE_CASE_      ):
              return other
         raise TypeError(f'{other} (type {type(SCREAMING_SNAKE_CASE_      )}) cannot be compared to version.'      )







    def __eq__(				self     ,	SCREAMING_SNAKE_CASE_      )							->	Optional[Any]:
         try:
              __lowerCamelCase  :      Union[str, Any]														=						self._validate_operand(SCREAMING_SNAKE_CASE_      )
         except (TypeError, ValueError):
              return False
         else:
              return self.tuple == other.tuple







    def __lt__(				self     ,	SCREAMING_SNAKE_CASE_      )							->	List[Any]:
         __lowerCamelCase  :      List[Any]														=						self._validate_operand(SCREAMING_SNAKE_CASE_      )
         return self.tuple < other.tuple







    def __hash__(				self      )							->	List[str]:
         return hash(_version_tuple_to_str(self.tuple      )      )







    @classmethod
    def  lowercase_							(				cls     ,	SCREAMING_SNAKE_CASE_      )							->	List[str]:
         __lowerCamelCase  :      str														=						{f.name for f in dataclasses.fields(cls      )}
         return cls(**{k: v for k, v in dic.items() if k in field_names}      )







    def  lowercase_							(				self      )							->	str:
         return self.version_str







def      UpperCAmelCase__   (      UpperCAmelCase_       :							Union[str, Any]				)	->						str:
     __lowerCamelCase  :      str														=						_VERSION_REG.match(UpperCAmelCase_				)
     if not res:
          raise ValueError(F'Invalid version \'{version_str}\'. Format should be x.y.z with {{x,y,z}} being digits.'				)
     return tuple(int(UpperCAmelCase_				) for v in [res.group('major'				), res.group('minor'				), res.group('patch'				)]				)



def      UpperCAmelCase__   (      UpperCAmelCase_       :							List[str]				)	->						Dict:
     return ".".join(str(UpperCAmelCase_				) for v in version_tuple				)






