
"""simple docstring"""



import json
import os
from functools import lru_cache
from typing import TYPE_CHECKING, List, Optional, Tuple

import regex as re

from ...tokenization_utils import AddedToken, PreTrainedTokenizer
from ...utils import logging


if TYPE_CHECKING:
 from transformers.pipelines.conversational import Conversation

UpperCAmelCase__          = logging.get_logger(__name__)


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

UpperCAmelCase__          = {
    'vocab_file': {'facebook/blenderbot-3B': 'https://huggingface.co/facebook/blenderbot-3B/resolve/main/vocab.json'},
    'merges_file': {'facebook/blenderbot-3B': 'https://huggingface.co/facebook/blenderbot-3B/resolve/main/merges.txt'},
    'tokenizer_config_file': {
        'facebook/blenderbot-3B': 'https://huggingface.co/facebook/blenderbot-3B/resolve/main/tokenizer_config.json'
    },
}

UpperCAmelCase__          = {'facebook/blenderbot-3B': 128}
@lru_cache()
# Copied from transformers.models.roberta.tokenization_roberta.bytes_to_unicode
def 					_UpperCAmelCase      ( )     ->					List[str]:
  _snake_case					     =       (
      list(range(ord('''!'''		) ,					ord('''~'''		) + 1		)		) + list(range(ord('''¡'''		) ,					ord('''¬'''		) + 1		)		) + list(range(ord('''®'''		) ,					ord('''ÿ'''		) + 1		)		)
  )
  _snake_case					     =       bs[:]
  _snake_case					     =       0
  for b in range(2**8		):
    if b not in bs:
      bs.append(lowercase__		)
      cs.append(2**8 + n		)
      n += 1
  _snake_case					     =       [chr(lowercase__		) for n in cs]
  return dict(zip(lowercase__ ,					lowercase__		)		)
def 					_UpperCAmelCase      ( __lowerCamelCase   :       int		)     ->					List[Any]:
  _snake_case					     =       set()
  _snake_case					     =       word[0]
  for char in word[1:]:
    pairs.add((prev_char, char)		)
    _snake_case					     =       char
  return pairs

class       lowerCAmelCase__				(						A__	):
     __a						=					VOCAB_FILES_NAMES
     __a						=					PRETRAINED_VOCAB_FILES_MAP
     __a						=					PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
     __a						=					['''input_ids''', '''attention_mask''']







     def __init__(							self			:			List[Any]    ,      _lowerCamelCase			:			str    ,      _lowerCamelCase			:			str    ,      _lowerCamelCase			:			Optional[Any]="replace"    ,      _lowerCamelCase			:			List[str]="<s>"    ,      _lowerCamelCase			:			Union[str, Any]="</s>"    ,      _lowerCamelCase			:			Optional[Any]="</s>"    ,      _lowerCamelCase			:			Optional[Any]="<s>"    ,      _lowerCamelCase			:			str="<unk>"    ,      _lowerCamelCase			:			int="<pad>"    ,      _lowerCamelCase			:			Tuple="<mask>"    ,      _lowerCamelCase			:			int=False    ,      **_lowerCamelCase			:			int    ,      ):
       _snake_case					     =       AddedToken(lowerCAmelCase__    ,      lstrip=lowerCAmelCase__    ,      rstrip=lowerCAmelCase__			) if isinstance(lowerCAmelCase__    ,      lowerCAmelCase__			) else bos_token
       _snake_case					     =       AddedToken(lowerCAmelCase__    ,      lstrip=lowerCAmelCase__    ,      rstrip=lowerCAmelCase__			) if isinstance(lowerCAmelCase__    ,      lowerCAmelCase__			) else eos_token
       _snake_case					     =       AddedToken(lowerCAmelCase__    ,      lstrip=lowerCAmelCase__    ,      rstrip=lowerCAmelCase__			) if isinstance(lowerCAmelCase__    ,      lowerCAmelCase__			) else sep_token
       _snake_case					     =       AddedToken(lowerCAmelCase__    ,      lstrip=lowerCAmelCase__    ,      rstrip=lowerCAmelCase__			) if isinstance(lowerCAmelCase__    ,      lowerCAmelCase__			) else cls_token
       _snake_case					     =       AddedToken(lowerCAmelCase__    ,      lstrip=lowerCAmelCase__    ,      rstrip=lowerCAmelCase__			) if isinstance(lowerCAmelCase__    ,      lowerCAmelCase__			) else unk_token
       _snake_case					     =       AddedToken(lowerCAmelCase__    ,      lstrip=lowerCAmelCase__    ,      rstrip=lowerCAmelCase__			) if isinstance(lowerCAmelCase__    ,      lowerCAmelCase__			) else pad_token

       # Mask token behave like a normal word, i.e. include the space before it
       _snake_case					     =       AddedToken(lowerCAmelCase__    ,      lstrip=lowerCAmelCase__    ,      rstrip=lowerCAmelCase__			) if isinstance(lowerCAmelCase__    ,      lowerCAmelCase__			) else mask_token

       super().__init__(
           errors=lowerCAmelCase__    ,      bos_token=lowerCAmelCase__    ,      eos_token=lowerCAmelCase__    ,      unk_token=lowerCAmelCase__    ,      sep_token=lowerCAmelCase__    ,      cls_token=lowerCAmelCase__    ,      pad_token=lowerCAmelCase__    ,      mask_token=lowerCAmelCase__    ,      add_prefix_space=lowerCAmelCase__    ,      **lowerCAmelCase__    ,      )

       with open(lowerCAmelCase__    ,      encoding='''utf-8'''			) as vocab_handle:
         _snake_case					     =       json.load(lowerCAmelCase__			)
       _snake_case					     =       {v: k for k, v in self.encoder.items()}
       _snake_case					     =       errors  # how to handle errors in decoding
       _snake_case					     =       bytes_to_unicode()
       _snake_case					     =       {v: k for k, v in self.byte_encoder.items()}
       with open(lowerCAmelCase__    ,      encoding='''utf-8'''			) as merges_handle:
         _snake_case					     =       merges_handle.read().split('''\n'''			)[1:-1]
       _snake_case					     =       [tuple(merge.split()			) for merge in bpe_merges]
       _snake_case					     =       dict(zip(lowerCAmelCase__    ,      range(len(lowerCAmelCase__			)			)			)			)
       _snake_case					     =       {}
       _snake_case					     =       add_prefix_space

       # Should have added re.IGNORECASE so BPE merges can happen for capitalized versions of contractions
       _snake_case					     =       re.compile(R'''\'s|\'t|\'re|\'ve|\'m|\'ll|\'d| ?\p{L}+| ?\p{N}+| ?[^\s\p{L}\p{N}]+|\s+(?!\S)|\s+'''			)







     @property
     # Copied from transformers.models.roberta.tokenization_roberta.RobertaTokenizer.vocab_size with Roberta->Blenderbot, RoBERTa->Blenderbot
     def      lowercase	(							self			:			Optional[int]			):
       return len(self.encoder			)







     def      lowercase	(							self			:			Optional[Any]			):
       return dict(self.encoder    ,      **self.added_tokens_encoder			)







     def      lowercase	(							self			:			Dict    ,      _lowerCamelCase			:			Optional[Any]			):
       if token in self.cache:
         return self.cache[token]
       _snake_case					     =       tuple(lowerCAmelCase__			)
       _snake_case					     =       get_pairs(lowerCAmelCase__			)

       if not pairs:
         return token

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

           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
         _snake_case					     =       tuple(lowerCAmelCase__			)
         _snake_case					     =       new_word
         if len(lowerCAmelCase__			) == 1:
           break
         else:
           _snake_case					     =       get_pairs(lowerCAmelCase__			)
       _snake_case					     =       ''' '''.join(lowerCAmelCase__			)
       _snake_case					     =       word
       return word







     def      lowercase	(							self			:			Any    ,      _lowerCamelCase			:			Union[str, Any]			):
       _snake_case					     =       []
       for token in re.findall(self.pat    ,      lowerCAmelCase__			):
         _snake_case					     =       ''''''.join(
             self.byte_encoder[b] for b in token.encode('''utf-8'''			)			)  # Maps all our bytes to unicode strings, avoiding control tokens of the BPE (spaces in our case)
         bpe_tokens.extend(bpe_token for bpe_token in self.bpe(lowerCAmelCase__			).split(''' '''			)			)
       return bpe_tokens







     def      lowercase	(							self			:			str    ,      _lowerCamelCase			:			List[str]			):
       return self.encoder.get(lowerCAmelCase__    ,      self.encoder.get(self.unk_token			)			)







     def      lowercase	(							self			:			Any    ,      _lowerCamelCase			:			Optional[int]			):
       return self.decoder.get(lowerCAmelCase__			)







     def      lowercase	(							self			:			Union[str, Any]    ,      _lowerCamelCase			:			List[Any]			):
       _snake_case					     =       ''''''.join(lowerCAmelCase__			)
       _snake_case					     =       bytearray([self.byte_decoder[c] for c in text]			).decode('''utf-8'''    ,      errors=self.errors			)
       return text







     def      lowercase	(							self			:			Union[str, Any]    ,      _lowerCamelCase			:			str    ,      _lowerCamelCase			:			Optional[str] = None			):
       if not os.path.isdir(lowerCAmelCase__			):
         logger.error(f'''Vocabulary path ({save_directory}) should be a directory'''			)
         return
       _snake_case					     =       os.path.join(
           lowerCAmelCase__    ,      (filename_prefix + '''-''' if filename_prefix else '''''') + VOCAB_FILES_NAMES['''vocab_file''']			)
       _snake_case					     =       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'''			)

       _snake_case					     =       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 _lowerCamelCase			: 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!'''			)
             _snake_case					     =       token_index
           writer.write(''' '''.join(lowerCAmelCase__			) + '''\n'''			)
           index += 1

       return vocab_file, merge_file







     def      lowercase	(							self			:			Optional[int]    ,      _lowerCamelCase			:			List[int]    ,      _lowerCamelCase			:			Optional[List[int]] = None    ,      _lowerCamelCase			:			bool = False			):
       if already_has_special_tokens:
         return super().get_special_tokens_mask(
             token_ids_a=lowerCAmelCase__    ,      token_ids_a=lowerCAmelCase__    ,      already_has_special_tokens=lowerCAmelCase__			)

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







     def      lowercase	(							self			:			Any    ,      _lowerCamelCase			:			List[int]    ,      _lowerCamelCase			:			Optional[List[int]] = None			):
       _snake_case					     =       [self.sep_token_id]
       _snake_case					     =       [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]







     def      lowercase	(							self			:			Optional[Any]    ,      _lowerCamelCase			:			Union[str, Any]    ,      _lowerCamelCase			:			Tuple=False    ,      **_lowerCamelCase			:			int			):
       _snake_case					     =       kwargs.pop('''add_prefix_space'''    ,      self.add_prefix_space			)
       if (is_split_into_words or add_prefix_space) and (len(lowerCAmelCase__			) > 0 and not text[0].isspace()):
         _snake_case					     =       ''' ''' + text
       return (text, kwargs)







     def      lowercase	(							self			:			List[str]    ,      _lowerCamelCase			:			List[int]    ,      _lowerCamelCase			:			Optional[List[int]] = None			):
       return token_ids_a + [self.eos_token_id]







     def      lowercase	(							self			:			Any    ,      _lowerCamelCase			:			"Conversation"			):
       _snake_case					     =       []
       for is_user, text in conversation.iter_texts():
         if is_user:
           # We need to space prefix as it's being done within blenderbot
           inputs.append(''' ''' + text			)
         else:
           # Generated responses should contain them already.
           inputs.append(lowerCAmelCase__			)

       _snake_case					     =       '''  '''.join(lowerCAmelCase__			)
       _snake_case					     =       self.encode(lowerCAmelCase__			)
       if len(lowerCAmelCase__			) > self.model_max_length:
         _snake_case					     =       input_ids[-self.model_max_length :]
         logger.warning(f'''Trimmed input from conversation as it was longer than {self.model_max_length} tokens.'''			)
       return input_ids







from importlib import import_module

from .logging import get_logger


__lowerCAmelCase	: str  				=get_logger(__name__)
class        _lowercase      :






				'''simple docstring'''



				def __init__(       self			:List[Any]			,			lowerCAmelCase__			:List[Any]			,			lowerCAmelCase__			:str=None	)		->			int:
										__SCREAMING_SNAKE_CASE						:     List[str]					=		attrs or []
										if module is not None:
																for key in module.__dict__:
																						if key in attrs or not key.startswith('''__'''	):
																												setattr(self			,			lowerCAmelCase__			,			getattr(lowerCAmelCase__			,			lowerCAmelCase__	)	)
										__SCREAMING_SNAKE_CASE						:     Optional[Any]					=		module._original_module if isinstance(lowerCAmelCase__			,			_PatchedModuleObj	) else module




class        _lowercase      :






				'''simple docstring'''



				SCREAMING_SNAKE_CASE__				:			Optional[int]						=		[]


				def __init__(       self			:Tuple			,			lowerCAmelCase__			:Optional[Any]			,			lowerCAmelCase__			:str			,			lowerCAmelCase__			:Any			,			lowerCAmelCase__			:Dict=None	)		->			List[Any]:
										__SCREAMING_SNAKE_CASE						:     Optional[int]					=		obj
										__SCREAMING_SNAKE_CASE						:     str					=		target
										__SCREAMING_SNAKE_CASE						:     Dict					=		new
										__SCREAMING_SNAKE_CASE						:     Union[str, Any]					=		target.split('''.'''	)[0]
										__SCREAMING_SNAKE_CASE						:     List[str]					=		{}
										__SCREAMING_SNAKE_CASE						:     Tuple					=		attrs or []


				def __enter__(       self			:int	)		->			Dict:
										*__SCREAMING_SNAKE_CASE			,			__SCREAMING_SNAKE_CASE						:     Optional[Any]					=		self.target.split('''.'''	)

										# Patch modules:
										# it's used to patch attributes of submodules like "os.path.join";
										# in this case we need to patch "os" and "os.path"

										for i in range(len(lowerCAmelCase__	)	):
																try:
																						__SCREAMING_SNAKE_CASE						:     Any					=		import_module('''.'''.join(submodules[: i + 1]	)	)
																except ModuleNotFoundError:
																						continue
																# We iterate over all the globals in self.obj in case we find "os" or "os.path"
																for attr in self.obj.__dir__():
																						__SCREAMING_SNAKE_CASE						:     Union[str, Any]					=		getattr(self.obj			,			lowerCAmelCase__	)
																						# We don't check for the name of the global, but rather if its value *is* "os" or "os.path".
																						# This allows to patch renamed modules like "from os import path as ospath".
																						if obj_attr is submodule or (
																						    (isinstance(lowerCAmelCase__			,			_PatchedModuleObj	) and obj_attr._original_module is submodule)
																						):
																												__SCREAMING_SNAKE_CASE						:     int					=		obj_attr
																												# patch at top level
																												setattr(self.obj			,			lowerCAmelCase__			,			_PatchedModuleObj(lowerCAmelCase__			,			attrs=self.attrs	)	)
																												__SCREAMING_SNAKE_CASE						:     List[str]					=		getattr(self.obj			,			lowerCAmelCase__	)
																												# construct lower levels patches
																												for key in submodules[i + 1 :]:
																																		setattr(lowerCAmelCase__			,			lowerCAmelCase__			,			_PatchedModuleObj(getattr(lowerCAmelCase__			,			lowerCAmelCase__			,			lowerCAmelCase__	)			,			attrs=self.attrs	)	)
																																		__SCREAMING_SNAKE_CASE						:     Tuple					=		getattr(lowerCAmelCase__			,			lowerCAmelCase__	)
																												# finally set the target attribute
																												setattr(lowerCAmelCase__			,			lowerCAmelCase__			,			self.new	)

        # Patch attribute itself:
        # it's used for builtins like "open",
        # and also to patch "os.path.join" we may also need to patch "join"
        # itself if it was imported as "from os.path import join".

										if submodules:  # if it's an attribute of a submodule like "os.path.join"
																try:
																						__SCREAMING_SNAKE_CASE						:     Union[str, Any]					=		getattr(import_module('''.'''.join(lowerCAmelCase__	)	)			,			lowerCAmelCase__	)
																except (AttributeError, ModuleNotFoundError):
																						return
																# We iterate over all the globals in self.obj in case we find "os.path.join"
																for attr in self.obj.__dir__():
																						# We don't check for the name of the global, but rather if its value *is* "os.path.join".
																						# This allows to patch renamed attributes like "from os.path import join as pjoin".
																						if getattr(self.obj			,			lowerCAmelCase__	) is attr_value:
																												__SCREAMING_SNAKE_CASE						:     Any					=		getattr(self.obj			,			lowerCAmelCase__	)
																												setattr(self.obj			,			lowerCAmelCase__			,			self.new	)
										elif target_attr in globals()["__builtins__"]:  # if it'a s builtin like "open"
																__SCREAMING_SNAKE_CASE						:     Union[str, Any]					=		globals()['''__builtins__'''][target_attr]
																setattr(self.obj			,			lowerCAmelCase__			,			self.new	)
										else:
																raise RuntimeError(f'''Tried to patch attribute {target_attr} instead of a submodule.'''	)


				def __exit__(       self			:str			,			*lowerCAmelCase__			:Union[str, Any]	)		->			Optional[int]:
										for attr in list(self.original	):
																setattr(self.obj			,			lowerCAmelCase__			,			self.original.pop(lowerCAmelCase__	)	)


				def 		__magic_name__(       self			:List[Any]	)		->			List[Any]:
										self.__enter__()
										self._active_patches.append(self	)



				def 		__magic_name__(       self			:Optional[int]	)		->			int:
										try:
																self._active_patches.remove(self	)
										except ValueError:
																# If the patch hasn't been started this will fail
																return None

										return self.__exit__()
