





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

import regex as re

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


_UpperCAmelCase       : Union[str, Any]			     =       logging.get_logger(__name__)


_UpperCAmelCase       : Tuple			     =       {
    """vocab_file""": """vocab.json""",
    """merges_file""": """merges.txt""",
    """tokenizer_config_file""": """tokenizer_config.json""",
}

_UpperCAmelCase       : str			     =       {
    """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"""
        )
    },
}

_UpperCAmelCase       : int			     =       {"""facebook/blenderbot_small-90M""": 5_12}


def  SCREAMING_SNAKE_CASE   ( _UpperCAmelCase				)    ->  str:
    lowerCamelCase__					:   List[str]      				=	set()
    lowerCamelCase__					:   Optional[Any]      				=	word[0]
    for char in word[1:]:
        pairs.add((prev_char, char)				)
        lowerCamelCase__					:   Optional[Any]      				=	char

    lowerCamelCase__					:   str      				=	set(snake_case__				)
    return pairs


class      lowerCAmelCase							(      __lowerCAmelCase    ):
 UpperCAmelCase__									=	VOCAB_FILES_NAMES
 UpperCAmelCase__									=	PRETRAINED_VOCAB_FILES_MAP
 UpperCAmelCase__									=	PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
 UpperCAmelCase__									=	['''input_ids''', '''attention_mask''']
 def __init__(   self						:   Optional[Any]    ,  UpperCAmelCase						:   List[Any]    ,  UpperCAmelCase						:   int    ,  UpperCAmelCase						:   str="__start__"    ,  UpperCAmelCase						:   int="__end__"    ,  UpperCAmelCase						:   Optional[int]="__unk__"    ,  UpperCAmelCase						:   int="__null__"    ,  **UpperCAmelCase						:   Union[str, Any]    ,  )    ->			int:
     super().__init__(unk_token=lowerCAmelCase_    ,  bos_token=lowerCAmelCase_    ,  eos_token=lowerCAmelCase_    ,  pad_token=lowerCAmelCase_    ,  **lowerCAmelCase_			)

     with open(lowerCAmelCase_    ,  encoding='utf-8'			) as vocab_handle:
         lowerCamelCase__					:   Any      				=	json.load(lowerCAmelCase_			)
     lowerCamelCase__					:   Any      				=	{v: k for k, v in self.encoder.items()}
     with open(lowerCAmelCase_    ,  encoding='utf-8'			) as merges_handle:
         lowerCamelCase__					:   str      				=	merges_handle.read().split('\n'			)[1:-1]
     lowerCamelCase__					:   Any      				=	[tuple(merge.split()			) for merge in merges]
     lowerCamelCase__					:   List[str]      				=	dict(zip(lowerCAmelCase_    ,  range(len(lowerCAmelCase_			)			)			)			)
     lowerCamelCase__					:   List[Any]      				=	{}
 @property
 def   A_			(   self						:   int			)    ->			int:
     return len(self.encoder			)
 def   A_			(   self						:   Any			)    ->			Dict:
     return dict(self.encoder    ,  **self.added_tokens_encoder			)
 def   A_			(   self						:   str    ,  UpperCAmelCase						:   Tuple			)    ->			str:
     if token in self.cache:
         return self.cache[token]
     lowerCamelCase__					:   Dict      				=	re.sub('([.,!?()])'    ,  R' \1'    ,  lowerCAmelCase_			)
     lowerCamelCase__					:   Optional[int]      				=	re.sub('(\')'    ,  R' \1 '    ,  lowerCAmelCase_			)
     lowerCamelCase__					:   Any      				=	re.sub(R'\s{2,}'    ,  ' '    ,  lowerCAmelCase_			)
     if "\n" in token:
         lowerCamelCase__					:   Union[str, Any]      				=	token.replace('\n'    ,  ' __newln__'			)

     lowerCamelCase__					:   List[Any]      				=	token.split(' '			)
     lowerCamelCase__					:   List[str]      				=	[]
     for token in tokens:
         if not len(lowerCAmelCase_			):
             continue

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

         if not pairs:
             words.append(lowerCAmelCase_			)
             continue

         while True:
             lowerCamelCase__					:   Union[str, Any]      				=	min(lowerCAmelCase_    ,  key=lambda UpperCAmelCase			: self.bpe_ranks.get(lowerCAmelCase_    ,  float('inf'			)			)			)
             if bigram not in self.bpe_ranks:
                 break
             lowerCamelCase__				,							lowerCamelCase__					:   Any      				=	bigram
             lowerCamelCase__					:   Optional[int]      				=	[]
             lowerCamelCase__					:   List[Any]      				=	0

             while i < len(lowerCAmelCase_			):
                 try:
                     lowerCamelCase__					:   Union[str, Any]      				=	word.index(lowerCAmelCase_    ,  lowerCAmelCase_			)
                     new_word.extend(word[i:j]			)
                     lowerCamelCase__					:   str      				=	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
             lowerCamelCase__					:   List[str]      				=	tuple(lowerCAmelCase_			)
             lowerCamelCase__					:   Optional[int]      				=	new_word
             if len(lowerCAmelCase_			) == 1:
                 break
             else:
                 lowerCamelCase__					:   Optional[Any]      				=	get_pairs(lowerCAmelCase_			)
         lowerCamelCase__					:   Any      				=	'@@ '.join(lowerCAmelCase_			)
         lowerCamelCase__					:   int      				=	word[:-4]

         lowerCamelCase__					:   Tuple      				=	word
         words.append(lowerCAmelCase_			)
     return " ".join(lowerCAmelCase_			)
 def   A_			(   self						:   Dict    ,  UpperCAmelCase						:   List[str]			)    ->			List[str]:
     lowerCamelCase__					:   Optional[Any]      				=	[]

     lowerCamelCase__					:   int      				=	re.findall(R'\S+\n?'    ,  lowerCAmelCase_			)

     for token in words:
         split_tokens.extend(list(self.bpe(lowerCAmelCase_			).split(' '			)			)			)
     return split_tokens
 def   A_			(   self						:   List[str]    ,  UpperCAmelCase						:   Tuple			)    ->			int:
     lowerCamelCase__					:   Optional[Any]      				=	token.lower()
     return self.encoder.get(lowerCAmelCase_    ,  self.encoder.get(self.unk_token			)			)
 def   A_			(   self						:   Union[str, Any]    ,  UpperCAmelCase						:   Tuple			)    ->			str:
     return self.decoder.get(lowerCAmelCase_    ,  self.unk_token			)
 def   A_			(   self						:   Any    ,  UpperCAmelCase						:   Tuple			)    ->			str:
     lowerCamelCase__					:   Tuple      				=	' '.join(lowerCAmelCase_			).replace('@@ '    ,  ''			).strip()
     return out_string







 def   A_			(   self						:   Dict    ,  UpperCAmelCase						:   List[str]    ,  UpperCAmelCase						:   Optional[Any] = None			)    ->			Tuple[str]:
     if not os.path.isdir(lowerCAmelCase_			):
         logger.error(F"""Vocabulary path ({save_directory}) should be a directory"""			)
         return
     lowerCamelCase__					:   Tuple      				=	os.path.join(
         lowerCAmelCase_    ,  (filename_prefix + '-' if filename_prefix else '') + VOCAB_FILES_NAMES['vocab_file']			)
     lowerCamelCase__					:   str      				=	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'			)

     lowerCamelCase__					:   List[str]      				=	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 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!'			)
                 lowerCamelCase__					:   Any      				=	token_index
             writer.write(' '.join(lowerCAmelCase_			) + '\n'			)
             index += 1

     return vocab_file, merge_file










from ..utils import DummyObject, requires_backends

class      lowerCAmelCase							(      metaclass=__UpperCamelCase    ):
 UpperCAmelCase__									=	["""torch""", """transformers""", """onnx"""]
 def __init__(   self						:   Tuple    ,  *UpperCAmelCase						:   str    ,  **UpperCAmelCase						:   Optional[int]			)    ->			List[str]:
     requires_backends(self    ,  ['torch', 'transformers', 'onnx']			)
 @classmethod
 def   A_			(   cls						:   Union[str, Any]    ,  *UpperCAmelCase						:   Dict    ,  **UpperCAmelCase						:   List[str]			)    ->			int:
     requires_backends(cls    ,  ['torch', 'transformers', 'onnx']			)







 @classmethod
 def   A_			(   cls						:   Any    ,  *UpperCAmelCase						:   List[Any]    ,  **UpperCAmelCase						:   Tuple			)    ->			Union[str, Any]:
     requires_backends(cls    ,  ['torch', 'transformers', 'onnx']			)


class      lowerCAmelCase							(      metaclass=__UpperCamelCase    ):
 UpperCAmelCase__									=	["""torch""", """transformers""", """onnx"""]
 def __init__(   self						:   List[Any]    ,  *UpperCAmelCase						:   Union[str, Any]    ,  **UpperCAmelCase						:   Dict			)    ->			Any:
     requires_backends(self    ,  ['torch', 'transformers', 'onnx']			)
 @classmethod
 def   A_			(   cls						:   str    ,  *UpperCAmelCase						:   Union[str, Any]    ,  **UpperCAmelCase						:   Union[str, Any]			)    ->			Tuple:
     requires_backends(cls    ,  ['torch', 'transformers', 'onnx']			)







 @classmethod
 def   A_			(   cls						:   List[Any]    ,  *UpperCAmelCase						:   str    ,  **UpperCAmelCase						:   Dict			)    ->			str:
     requires_backends(cls    ,  ['torch', 'transformers', 'onnx']			)


class      lowerCAmelCase							(      metaclass=__UpperCamelCase    ):
 UpperCAmelCase__									=	["""torch""", """transformers""", """onnx"""]
 def __init__(   self						:   Dict    ,  *UpperCAmelCase						:   Dict    ,  **UpperCAmelCase						:   Dict			)    ->			Optional[int]:
     requires_backends(self    ,  ['torch', 'transformers', 'onnx']			)
 @classmethod
 def   A_			(   cls						:   Optional[Any]    ,  *UpperCAmelCase						:   Union[str, Any]    ,  **UpperCAmelCase						:   Any			)    ->			Any:
     requires_backends(cls    ,  ['torch', 'transformers', 'onnx']			)







 @classmethod
 def   A_			(   cls						:   List[str]    ,  *UpperCAmelCase						:   Any    ,  **UpperCAmelCase						:   Dict			)    ->			Tuple:
     requires_backends(cls    ,  ['torch', 'transformers', 'onnx']			)


class      lowerCAmelCase							(      metaclass=__UpperCamelCase    ):
 UpperCAmelCase__									=	["""torch""", """transformers""", """onnx"""]
 def __init__(   self						:   Union[str, Any]    ,  *UpperCAmelCase						:   Optional[int]    ,  **UpperCAmelCase						:   Optional[int]			)    ->			Any:
     requires_backends(self    ,  ['torch', 'transformers', 'onnx']			)
 @classmethod
 def   A_			(   cls						:   List[Any]    ,  *UpperCAmelCase						:   Dict    ,  **UpperCAmelCase						:   int			)    ->			Dict:
     requires_backends(cls    ,  ['torch', 'transformers', 'onnx']			)







 @classmethod
 def   A_			(   cls						:   Dict    ,  *UpperCAmelCase						:   Dict    ,  **UpperCAmelCase						:   Optional[int]			)    ->			Optional[int]:
     requires_backends(cls    ,  ['torch', 'transformers', 'onnx']			)


class      lowerCAmelCase							(      metaclass=__UpperCamelCase    ):
 UpperCAmelCase__									=	["""torch""", """transformers""", """onnx"""]
 def __init__(   self						:   List[str]    ,  *UpperCAmelCase						:   List[Any]    ,  **UpperCAmelCase						:   List[str]			)    ->			Optional[int]:
     requires_backends(self    ,  ['torch', 'transformers', 'onnx']			)
 @classmethod
 def   A_			(   cls						:   List[Any]    ,  *UpperCAmelCase						:   Optional[Any]    ,  **UpperCAmelCase						:   Optional[Any]			)    ->			str:
     requires_backends(cls    ,  ['torch', 'transformers', 'onnx']			)







 @classmethod
 def   A_			(   cls						:   List[Any]    ,  *UpperCAmelCase						:   Optional[int]    ,  **UpperCAmelCase						:   Any			)    ->			Any:
     requires_backends(cls    ,  ['torch', 'transformers', 'onnx']			)


class      lowerCAmelCase							(      metaclass=__UpperCamelCase    ):
 UpperCAmelCase__									=	["""torch""", """transformers""", """onnx"""]
 def __init__(   self						:   List[str]    ,  *UpperCAmelCase						:   Tuple    ,  **UpperCAmelCase						:   Optional[int]			)    ->			Optional[Any]:
     requires_backends(self    ,  ['torch', 'transformers', 'onnx']			)
 @classmethod
 def   A_			(   cls						:   Union[str, Any]    ,  *UpperCAmelCase						:   List[Any]    ,  **UpperCAmelCase						:   Optional[Any]			)    ->			Tuple:
     requires_backends(cls    ,  ['torch', 'transformers', 'onnx']			)







 @classmethod
 def   A_			(   cls						:   Tuple    ,  *UpperCAmelCase						:   List[str]    ,  **UpperCAmelCase						:   List[str]			)    ->			Tuple:
     requires_backends(cls    ,  ['torch', 'transformers', 'onnx']			)





