

"""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							=							logging.get_logger(__name__)


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

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




def   _A  (  UpperCamelCase_					:	Optional[int])     ->						Optional[int]:
   '''simple docstring'''


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

   __lowercase								=						set(UpperCamelCase_)
   return pairs




class  _lowerCAmelCase  (     lowercase       ):







 """simple docstring"""







 __UpperCAmelCase     : List[Any]       		=     VOCAB_FILES_NAMES
 __UpperCAmelCase     : Optional[Any]       		=     PRETRAINED_VOCAB_FILES_MAP
 __UpperCAmelCase     : Optional[int]       		=     PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
 __UpperCAmelCase     : Union[str, Any]       		=     ["input_ids", "attention_mask"]


 def __init__(      self							:      str, UpperCAmelCase__							:      List[str], UpperCAmelCase__							:      Optional[int], UpperCAmelCase__							:      str="__start__", UpperCAmelCase__							:      str="__end__", UpperCAmelCase__							:      Optional[Any]="__unk__", UpperCAmelCase__							:      Dict="__null__", **UpperCAmelCase__							:      Tuple, ):
    super().__init__(unk_token=UpperCAmelCase__, bos_token=UpperCAmelCase__, eos_token=UpperCAmelCase__, pad_token=UpperCAmelCase__, **UpperCAmelCase__     )

    with open(UpperCAmelCase__, encoding="utf-8"     ) as vocab_handle:
       __lowercase								=						json.load(UpperCAmelCase__     )
    __lowercase								=						{v: k for k, v in self.encoder.items()}
    with open(UpperCAmelCase__, encoding="utf-8"     ) as merges_handle:
       __lowercase								=						merges_handle.read().split("\n"     )[1:-1]
    __lowercase								=						[tuple(merge.split()     ) for merge in merges]
    __lowercase								=						dict(zip(UpperCAmelCase__, range(len(UpperCAmelCase__     )     )     )     )
    __lowercase								=						{}


 @property
 def  _lowercase			(      self							:      Any     ):
    return len(self.encoder     )


 def  _lowercase			(      self							:      Any     ):
    return dict(self.encoder, **self.added_tokens_encoder     )


 def  _lowercase			(      self							:      Optional[Any], UpperCAmelCase__							:      str     ):
    if token in self.cache:
       return self.cache[token]
    __lowercase								=						re.sub("([.,!?()])", r" \1", UpperCAmelCase__     )
    __lowercase								=						re.sub("(')", r" \1 ", UpperCAmelCase__     )
    __lowercase								=						re.sub(r"\s{2,}", " ", UpperCAmelCase__     )
    if "\n" in token:
       __lowercase								=						token.replace("\n", " __newln__"     )

    __lowercase								=						token.split(" "     )
    __lowercase								=						[]
    for token in tokens:
       if not len(UpperCAmelCase__     ):
          continue

       __lowercase								=						token.lower()
       __lowercase								=						tuple(UpperCAmelCase__     )
       __lowercase								=						tuple(list(word[:-1]     ) + [word[-1] + "</w>"]     )
       __lowercase								=						get_pairs(UpperCAmelCase__     )

       if not pairs:
          words.append(UpperCAmelCase__     )
          continue

       while True:
          __lowercase								=						min(UpperCAmelCase__, key=lambda UpperCAmelCase__     : self.bpe_ranks.get(UpperCAmelCase__, float("inf"     )     )     )
          if bigram not in self.bpe_ranks:
             break
          __lowercase		,__lowercase								=						bigram
          __lowercase								=						[]
          __lowercase								=						0

          while i < len(UpperCAmelCase__     ):
             try:
                __lowercase								=						word.index(UpperCAmelCase__, UpperCAmelCase__     )
                new_word.extend(word[i:j]     )
                __lowercase								=						j
             except ValueError:
                new_word.extend(word[i:]     )
                break

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

       __lowercase								=						word
       words.append(UpperCAmelCase__     )
    return " ".join(UpperCAmelCase__     )


 def  _lowercase			(      self							:      Optional[Any], UpperCAmelCase__							:      str     ):
    __lowercase								=						[]

    __lowercase								=						re.findall(r"\S+\n?", UpperCAmelCase__     )

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


 def  _lowercase			(      self							:      str, UpperCAmelCase__							:      str     ):
    __lowercase								=						token.lower()
    return self.encoder.get(UpperCAmelCase__, self.encoder.get(self.unk_token     )     )


 def  _lowercase			(      self							:      Optional[int], UpperCAmelCase__							:      int     ):
    return self.decoder.get(UpperCAmelCase__, self.unk_token     )


 def  _lowercase			(      self							:      Union[str, Any], UpperCAmelCase__							:      List[str]     ):
    __lowercase								=						" ".join(UpperCAmelCase__     ).replace("@@ ", ""     ).strip()
    return out_string



 def  _lowercase			(      self							:      Any, UpperCAmelCase__							:      str, UpperCAmelCase__							:      Optional[str] = None     ):
    if not os.path.isdir(UpperCAmelCase__     ):
       logger.error(F"""Vocabulary path ({save_directory}) should be a directory"""     )
       return
    __lowercase								=						os.path.join(
        UpperCAmelCase__, (filename_prefix + "-" if filename_prefix else "") + VOCAB_FILES_NAMES["vocab_file"]     )
    __lowercase								=						os.path.join(
        UpperCAmelCase__, (filename_prefix + "-" if filename_prefix else "") + VOCAB_FILES_NAMES["merges_file"]     )

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

    __lowercase								=						0
    with open(UpperCAmelCase__, "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 UpperCAmelCase__     : 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!"     )
             __lowercase								=						token_index
          writer.write(" ".join(UpperCAmelCase__     ) + "\n"     )
          index += 1

    return vocab_file, merge_file





"""simple docstring"""





_a							=							[
    'DownloadConfig',
    'DownloadManager',
    'DownloadMode',
    'StreamingDownloadManager',
]

from .download_config import DownloadConfig
from .download_manager import DownloadManager, DownloadMode
from .streaming_download_manager import StreamingDownloadManager




