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

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


lowerCAmelCase_	     =     logging.get_logger(__name__)

lowerCAmelCase_	     =     {
    "vocab_file": "vocab.json",
    "merges_file": "merges.txt",
}

lowerCAmelCase_	     =     {
    "vocab_file": {
        "microsoft/biogpt": "https://huggingface.co/microsoft/biogpt/resolve/main/vocab.json",
    },
    "merges_file": {"microsoft/biogpt": "https://huggingface.co/microsoft/biogpt/resolve/main/merges.txt"},
}

lowerCAmelCase_	     =     {
    "microsoft/biogpt": 10_24,
}


def   __SCREAMING_SNAKE_CASE (SCREAMING_SNAKE_CASE__	):
						snake_case_       =     set()
						snake_case_       =     word[0]
						for char in word[1:]:
												pairs.add((prev_char, char)	)
												snake_case_       =     char
						return pairs





class      snake_case_       (		UpperCAmelCase__ ):







			'''simple docstring'''

			SCREAMING_SNAKE_CASE					:       int						      =    VOCAB_FILES_NAMES
			SCREAMING_SNAKE_CASE					:       Tuple						      =    PRETRAINED_VOCAB_FILES_MAP
			SCREAMING_SNAKE_CASE					:       Tuple						      =    PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
			SCREAMING_SNAKE_CASE					:       Tuple						      =    ["input_ids", "attention_mask"]







			def __init__(					self			:    Union[str, Any]							,       _UpperCamelCase			:    Dict							,       _UpperCamelCase			:    Tuple							,       _UpperCamelCase			:    List[Any]="<unk>"							,       _UpperCamelCase			:    Tuple="<s>"							,       _UpperCamelCase			:    Tuple="</s>"							,       _UpperCamelCase			:    Union[str, Any]="</s>"							,       _UpperCamelCase			:    str="<pad>"							,       **_UpperCamelCase			:    List[Any]							,       )				->Optional[Any]:
									super().__init__(
									    bos_token=__lowercase							,       eos_token=__lowercase							,       sep_token=__lowercase							,       unk_token=__lowercase							,       pad_token=__lowercase							,       **__lowercase							,       )

									try:
															import sacremoses
									except ImportError:
															raise ImportError(
															    '''You need to install sacremoses to use BioGptTokenizer. '''
															    '''See https://pypi.org/project/sacremoses/ for installation.'''							)

									snake_case_       =     '''en'''
									snake_case_       =     sacremoses
									# cache of sm.MosesTokenizer instance
									snake_case_       =     {}
									snake_case_       =     {}
									with open(__lowercase							,       encoding='''utf-8'''							) as vocab_handle:
															snake_case_       =     json.load(__lowercase							)
									snake_case_       =     {v: k for k, v in self.encoder.items()}
									with open(__lowercase							,       encoding='''utf-8'''							) as merges_handle:
															snake_case_       =     merges_handle.read().split('''\n'''							)[:-1]
									snake_case_       =     [tuple(merge.split()[:2]							) for merge in merges]
									snake_case_       =     dict(zip(__lowercase							,       range(len(__lowercase							)							)							)							)
									snake_case_       =     {}







			@property
			def     snake_case__(					self			:    List[Any]							)				->List[str]:
									return len(self.encoder							)







			def     snake_case__(					self			:    Optional[int]							)				->Any:
									return dict(self.encoder							,       **self.added_tokens_encoder							)







			def     snake_case__(					self			:    int							,       _UpperCamelCase			:    Dict							,       _UpperCamelCase			:    int							)				->Optional[Any]:






									if lang not in self.cache_moses_tokenizer:
															snake_case_       =     self.sm.MosesTokenizer(lang=__lowercase							)
															snake_case_       =     moses_tokenizer
									return self.cache_moses_tokenizer[lang].tokenize(
									    __lowercase							,       aggressive_dash_splits=__lowercase							,       return_str=__lowercase							,       escape=__lowercase							)







			def     snake_case__(					self			:    Tuple							,       _UpperCamelCase			:    str							,       _UpperCamelCase			:    List[str]							)				->Optional[Any]:






									if lang not in self.cache_moses_detokenizer:
															snake_case_       =     self.sm.MosesDetokenizer(lang=__lowercase							)
															snake_case_       =     moses_detokenizer
									return self.cache_moses_detokenizer[lang].detokenize(__lowercase							)







			def     snake_case__(					self			:    Tuple							,       _UpperCamelCase			:    Dict							)				->Optional[Any]:
									snake_case_       =     tuple(token[:-1]							) + (token[-1] + '''</w>''',)
									if token in self.cache:
															return self.cache[token]
									snake_case_       =     get_pairs(__lowercase							)

									if not pairs:
															return token + "</w>"

									while True:
															snake_case_       =     min(__lowercase							,       key=lambda _UpperCamelCase							: self.bpe_ranks.get(__lowercase							,       float('''inf'''							)							)							)
															if bigram not in self.bpe_ranks:
																					break
															snake_case_,   snake_case_       =     bigram
															snake_case_       =     []
															snake_case_       =     0
															while i < len(__lowercase							):
																					try:
																											snake_case_       =     word.index(__lowercase							,       __lowercase							)
																					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(__lowercase							) - 1 and word[i + 1] == second:
																											new_word.append(first + second							)
																											i += 2
																					else:
																											new_word.append(word[i]							)
																											i += 1
															snake_case_       =     tuple(__lowercase							)
															snake_case_       =     new_word
															if len(__lowercase							) == 1:
																					break
															else:
																					snake_case_       =     get_pairs(__lowercase							)
									snake_case_       =     ''' '''.join(__lowercase							)
									if word == "\n  </w>":
															snake_case_       =     '''\n</w>'''
									snake_case_       =     word
									return word







			def     snake_case__(					self			:    Optional[Any]							,       _UpperCamelCase			:    int							,       _UpperCamelCase			:    Dict=False							)				->Optional[int]:






									if bypass_tokenizer:
															snake_case_       =     text.split()
									else:
															snake_case_       =     self.moses_tokenize(__lowercase							,       self.lang							)

									snake_case_       =     []
									for token in text:
															if token:
																					split_tokens.extend(list(self.bpe(__lowercase							).split(''' '''							)							)							)

									return split_tokens







			def     snake_case__(					self			:    Optional[int]							,       _UpperCamelCase			:    List[str]							)				->List[str]:
									return self.encoder.get(__lowercase							,       self.encoder.get(self.unk_token							)							)







			def     snake_case__(					self			:    List[Any]							,       _UpperCamelCase			:    List[str]							)				->Optional[Any]:
									return self.decoder.get(__lowercase							,       self.unk_token							)







			def     snake_case__(					self			:    Union[str, Any]							,       _UpperCamelCase			:    str							)				->List[str]:
									snake_case_       =     [t.replace(''' '''							,       ''''''							).replace('''</w>'''							,       ''' '''							) for t in tokens]
									snake_case_       =     ''''''.join(__lowercase							).split()
									# detokenize
									snake_case_       =     self.moses_detokenize(__lowercase							,       self.lang							)
									return text







			def     snake_case__(					self			:    Optional[Any]							,       _UpperCamelCase			:    List[int]							,       _UpperCamelCase			:    Optional[List[int]] = None							)				->Optional[Any]:






									if token_ids_a is None:
															return [self.sep_token_id] + token_ids_a
									snake_case_       =     [self.sep_token_id]
									return sep + token_ids_a + sep + token_ids_a







			def     snake_case__(					self			:    str							,       _UpperCamelCase			:    List[int]							,       _UpperCamelCase			:    Optional[List[int]] = None							,       _UpperCamelCase			:    bool = False							)				->Optional[Any]:






									if already_has_special_tokens:
															return super().get_special_tokens_mask(
															    token_ids_a=__lowercase							,       token_ids_a=__lowercase							,       already_has_special_tokens=__lowercase							)
									# no bos used in fairseq
									if token_ids_a is not None:
															return [1] + ([0] * len(__lowercase							)) + [1] + ([0] * len(__lowercase							))
									return [1] + ([0] * len(__lowercase							))







			def     snake_case__(					self			:    Optional[Any]							,       _UpperCamelCase			:    List[int]							,       _UpperCamelCase			:    Optional[List[int]] = None							)				->Tuple:
									snake_case_       =     [self.sep_token_id]

									# no bos used in fairseq
									if token_ids_a is None:
															return len(token_ids_a + sep							) * [0]
									return len(token_ids_a + sep							) * [0] + len(token_ids_a + sep							) * [1]







			def     snake_case__(					self			:    int							,       _UpperCamelCase			:    str							,       _UpperCamelCase			:    Optional[str] = None							)				->Optional[int]:






									if not os.path.isdir(__lowercase							):
															logger.error(f'''Vocabulary path ({save_directory}) should be a directory'''							)
															return
									snake_case_       =     os.path.join(
									    __lowercase							,       (filename_prefix + '''-''' if filename_prefix else '''''') + VOCAB_FILES_NAMES['''vocab_file''']							)
									snake_case_       =     os.path.join(
									    __lowercase							,       (filename_prefix + '''-''' if filename_prefix else '''''') + VOCAB_FILES_NAMES['''merges_file''']							)

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

									snake_case_       =     0
									with open(__lowercase							,       '''w'''							,       encoding='''utf-8'''							) as writer:
															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!'''							)
																											snake_case_       =     token_index
																					writer.write(''' '''.join(__lowercase							) + '''\n'''							)
																					index += 1

									return vocab_file, merge_file







			def __getstate__(					self			:    Tuple							)				->List[Any]:
									snake_case_       =     self.__dict__.copy()
									snake_case_       =     None
									return state







			def __setstate__(					self			:    List[str]							,       _UpperCamelCase			:    List[str]							)				->List[str]:
									snake_case_       =     d

									try:
															import sacremoses
									except ImportError:
															raise ImportError(
															    '''You need to install sacremoses to use XLMTokenizer. '''
															    '''See https://pypi.org/project/sacremoses/ for installation.'''							)

									snake_case_       =     sacremoses


def   __SCREAMING_SNAKE_CASE (SCREAMING_SNAKE_CASE__	):
						snake_case_       =     5381
						for x in s:
												snake_case_       =     ((hash_value << 5) + hash_value) + ord(SCREAMING_SNAKE_CASE__	)
						return hash_value & 0xFF_FF_FF_FF