


'''simple docstring'''



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

import regex as re

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


__A	=logging.get_logger(__name__)


__A	={'vocab_file': 'vocab.json', 'merges_file': 'merges.txt'}

__A	={
    'vocab_file': {
        'allenai/longformer-base-4096': 'https://huggingface.co/allenai/longformer-base-4096/resolve/main/vocab.json',
        'allenai/longformer-large-4096': (
            'https://huggingface.co/allenai/longformer-large-4096/resolve/main/vocab.json'
        ),
        'allenai/longformer-large-4096-finetuned-triviaqa': (
            'https://huggingface.co/allenai/longformer-large-4096-finetuned-triviaqa/resolve/main/vocab.json'
        ),
        'allenai/longformer-base-4096-extra.pos.embd.only': (
            'https://huggingface.co/allenai/longformer-base-4096-extra.pos.embd.only/resolve/main/vocab.json'
        ),
        'allenai/longformer-large-4096-extra.pos.embd.only': (
            'https://huggingface.co/allenai/longformer-large-4096-extra.pos.embd.only/resolve/main/vocab.json'
        ),
    },
    'merges_file': {
        'allenai/longformer-base-4096': 'https://huggingface.co/allenai/longformer-base-4096/resolve/main/merges.txt',
        'allenai/longformer-large-4096': (
            'https://huggingface.co/allenai/longformer-large-4096/resolve/main/merges.txt'
        ),
        'allenai/longformer-large-4096-finetuned-triviaqa': (
            'https://huggingface.co/allenai/longformer-large-4096-finetuned-triviaqa/resolve/main/merges.txt'
        ),
        'allenai/longformer-base-4096-extra.pos.embd.only': (
            'https://huggingface.co/allenai/longformer-base-4096-extra.pos.embd.only/resolve/main/merges.txt'
        ),
        'allenai/longformer-large-4096-extra.pos.embd.only': (
            'https://huggingface.co/allenai/longformer-large-4096-extra.pos.embd.only/resolve/main/merges.txt'
        ),
    },
}

__A	={
    'allenai/longformer-base-4096': 40_96,
    'allenai/longformer-large-4096': 40_96,
    'allenai/longformer-large-4096-finetuned-triviaqa': 40_96,
    'allenai/longformer-base-4096-extra.pos.embd.only': 40_96,
    'allenai/longformer-large-4096-extra.pos.embd.only': 40_96,
}







@lru_cache()
# Copied from transformers.models.roberta.tokenization_roberta.bytes_to_unicode
def     _UpperCamelCase      (		):
			UpperCAmelCase__  :					Any        =     (
			    list(range(ord("""!"""					) ,      ord("""~"""					) + 1					)					) + list(range(ord("""¡"""					) ,      ord("""¬"""					) + 1					)					) + list(range(ord("""®"""					) ,      ord("""ÿ"""					) + 1					)					)
			)
			UpperCAmelCase__  :					Optional[Any]        =     bs[:]
			UpperCAmelCase__  :					int        =     0
			for b in range(2**8					):
						if b not in bs:
									bs.append(UpperCamelCase__					)
									cs.append(2**8 + n					)
									n += 1
			UpperCAmelCase__  :					List[Any]        =     [chr(UpperCamelCase__					) for n in cs]
			return dict(zip(UpperCamelCase__ ,      UpperCamelCase__					)					)







def     _UpperCamelCase      (		UpperCamelCase__					):
			UpperCAmelCase__  :					Optional[int]        =     set()
			UpperCAmelCase__  :					Optional[int]        =     word[0]
			for char in word[1:]:
						pairs.add((prev_char, char)					)
						UpperCAmelCase__  :					List[Any]        =     char
			return pairs


class 		_snake_case					(     a__	):
					lowerCAmelCase      :int   =					VOCAB_FILES_NAMES
					lowerCAmelCase      :Optional[int]   =					PRETRAINED_VOCAB_FILES_MAP
					lowerCAmelCase      :Union[str, Any]   =					PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
					lowerCAmelCase      :int   =					['''input_ids''', '''attention_mask''']




					def __init__(      self							,							_lowerCamelCase							,							_lowerCamelCase							,							_lowerCamelCase="replace"							,							_lowerCamelCase="<s>"							,							_lowerCamelCase="</s>"							,							_lowerCamelCase="</s>"							,							_lowerCamelCase="<s>"							,							_lowerCamelCase="<unk>"							,							_lowerCamelCase="<pad>"							,							_lowerCamelCase="<mask>"							,							_lowerCamelCase=False							,							**_lowerCamelCase							,							):
								UpperCAmelCase__  :					Dict        =     AddedToken(_lowerCamelCase							,							lstrip=_lowerCamelCase							,							rstrip=_lowerCamelCase) if isinstance(_lowerCamelCase							,							_lowerCamelCase) else bos_token
								UpperCAmelCase__  :					int        =     AddedToken(_lowerCamelCase							,							lstrip=_lowerCamelCase							,							rstrip=_lowerCamelCase) if isinstance(_lowerCamelCase							,							_lowerCamelCase) else eos_token
								UpperCAmelCase__  :					str        =     AddedToken(_lowerCamelCase							,							lstrip=_lowerCamelCase							,							rstrip=_lowerCamelCase) if isinstance(_lowerCamelCase							,							_lowerCamelCase) else sep_token
								UpperCAmelCase__  :					Union[str, Any]        =     AddedToken(_lowerCamelCase							,							lstrip=_lowerCamelCase							,							rstrip=_lowerCamelCase) if isinstance(_lowerCamelCase							,							_lowerCamelCase) else cls_token
								UpperCAmelCase__  :					Union[str, Any]        =     AddedToken(_lowerCamelCase							,							lstrip=_lowerCamelCase							,							rstrip=_lowerCamelCase) if isinstance(_lowerCamelCase							,							_lowerCamelCase) else unk_token
								UpperCAmelCase__  :					Any        =     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
								UpperCAmelCase__  :					List[str]        =     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:
											UpperCAmelCase__  :					Optional[Any]        =     json.load(_lowerCamelCase)
								UpperCAmelCase__  :					Any        =     {v: k for k, v in self.encoder.items()}
								UpperCAmelCase__  :					List[str]        =     errors  # how to handle errors in decoding
								UpperCAmelCase__  :					Optional[Any]        =     bytes_to_unicode()
								UpperCAmelCase__  :					Dict        =     {v: k for k, v in self.byte_encoder.items()}
								with open(_lowerCamelCase							,							encoding="""utf-8""") as merges_handle:
											UpperCAmelCase__  :					Optional[int]        =     merges_handle.read().split("""\n""")[1:-1]
								UpperCAmelCase__  :					Union[str, Any]        =     [tuple(merge.split()) for merge in bpe_merges]
								UpperCAmelCase__  :					str        =     dict(zip(_lowerCamelCase							,							range(len(_lowerCamelCase))))
								UpperCAmelCase__  :					Dict        =     {}
								UpperCAmelCase__  :					Dict        =     add_prefix_space

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




					@property
					def 				snake_case__						(      self):
								return len(self.encoder)




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




					def 				snake_case__						(      self							,							_lowerCamelCase):
								if token in self.cache:
											return self.cache[token]
								UpperCAmelCase__  :					List[Any]        =     tuple(_lowerCamelCase)
								UpperCAmelCase__  :					str        =     get_pairs(_lowerCamelCase)

								if not pairs:
											return token

								while True:
											UpperCAmelCase__  :					Dict        =     min(_lowerCamelCase							,							key=lambda _lowerCamelCase: self.bpe_ranks.get(_lowerCamelCase							,							float("""inf""")))
											if bigram not in self.bpe_ranks:
														break
											UpperCAmelCase__  :					Tuple        =     bigram
											UpperCAmelCase__  :					str        =     []
											UpperCAmelCase__  :					int        =     0
											while i < len(_lowerCamelCase):
														try:
																	UpperCAmelCase__  :					List[str]        =     word.index(_lowerCamelCase							,							_lowerCamelCase)
														except ValueError:
																	new_word.extend(word[i:])
																	break
														else:
																	new_word.extend(word[i:j])
																	UpperCAmelCase__  :					Any        =     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
											UpperCAmelCase__  :					List[Any]        =     tuple(_lowerCamelCase)
											UpperCAmelCase__  :					Any        =     new_word
											if len(_lowerCamelCase) == 1:
														break
											else:
														UpperCAmelCase__  :					str        =     get_pairs(_lowerCamelCase)
								UpperCAmelCase__  :					Optional[int]        =     """ """.join(_lowerCamelCase)
								UpperCAmelCase__  :					List[Any]        =     word
								return word




					def 				snake_case__						(      self							,							_lowerCamelCase):
								UpperCAmelCase__  :					Dict        =     []
								for token in re.findall(self.pat							,							_lowerCamelCase):
											UpperCAmelCase__  :					Dict        =     """""".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 				snake_case__						(      self							,							_lowerCamelCase):
								return self.encoder.get(_lowerCamelCase							,							self.encoder.get(self.unk_token))




					def 				snake_case__						(      self							,							_lowerCamelCase):
								return self.decoder.get(_lowerCamelCase)




					def 				snake_case__						(      self							,							_lowerCamelCase):
								UpperCAmelCase__  :					Tuple        =     """""".join(_lowerCamelCase)
								UpperCAmelCase__  :					str        =     bytearray([self.byte_decoder[c] for c in text]).decode("""utf-8"""							,							errors=self.errors)
								return text




					def 				snake_case__						(      self							,							_lowerCamelCase							,							_lowerCamelCase = None):
								if not os.path.isdir(_lowerCamelCase):
											logger.error(f'''Vocabulary path ({save_directory}) should be a directory''')
											return
								UpperCAmelCase__  :					Dict        =     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__  :					Optional[Any]        =     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!""")
																	UpperCAmelCase__  :					Tuple        =     token_index
														writer.write(""" """.join(_lowerCamelCase) + """\n""")
														index += 1

								return vocab_file, merge_file




					def 				snake_case__						(      self							,							_lowerCamelCase							,							_lowerCamelCase = None):
								if token_ids_a is None:
											return [self.cls_token_id] + token_ids_a + [self.sep_token_id]
								UpperCAmelCase__  :					Optional[int]        =     [self.cls_token_id]
								UpperCAmelCase__  :					Optional[Any]        =     [self.sep_token_id]
								return cls + token_ids_a + sep + sep + token_ids_a + sep




					def 				snake_case__						(      self							,							_lowerCamelCase							,							_lowerCamelCase = None							,							_lowerCamelCase = 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 				snake_case__						(      self							,							_lowerCamelCase							,							_lowerCamelCase = None):
								UpperCAmelCase__  :					Union[str, Any]        =     [self.sep_token_id]
								UpperCAmelCase__  :					List[Any]        =     [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 				snake_case__						(      self							,							_lowerCamelCase							,							_lowerCamelCase=False							,							**_lowerCamelCase):
								UpperCAmelCase__  :					Optional[Any]        =     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()):
											UpperCAmelCase__  :					Tuple        =     """ """ + text
								return (text, kwargs)



'''simple docstring'''



import warnings
from functools import wraps
from typing import Callable







def     _UpperCamelCase      (		UpperCamelCase__					):

			@wraps(UpperCamelCase__					)
			def _inner_fn(*UpperCamelCase__ ,      **UpperCamelCase__					):
						warnings.warn(
						    (f'''\'{fn.__name__}\' is experimental and might be subject to breaking changes in the future.''') ,      UpperCamelCase__ ,      )
						return fn(*UpperCamelCase__ ,      **UpperCamelCase__					)

			return _inner_fn