




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    :						Any						      =       logging.get_logger(__name__)


__a    :						List[Any]						      =       {
    '''vocab_file''': '''vocab.json''',
    '''merges_file''': '''merges.txt''',
    '''tokenizer_config_file''': '''tokenizer_config.json''',
}

__a    :						Tuple						      =       {
    '''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    :						str						      =       {'''facebook/blenderbot_small-90M''': 5_1_2}
def    snake_case_	(						SCREAMING_SNAKE_CASE_							)     ->					Optional[int]:
							lowercase__    :			List[str]     =				set()
							lowercase__    :			Optional[Any]     =				word[0]
							for char in word[1:]:
														pairs.add((prev_char, char)							)
														lowercase__    :			Union[str, Any]     =				char

							lowercase__    :			Any     =				set(lowerCAmelCase__							)
							return pairs







class  UpperCAmelCase(	_UpperCamelCase	):



	"""simple docstring"""






	a      :   Union[str, Any]			    =	VOCAB_FILES_NAMES
	a      :   List[Any]			    =	PRETRAINED_VOCAB_FILES_MAP
	a      :   List[Any]			    =	PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
	a      :   str			    =	["input_ids", "attention_mask"]

	def __init__(	self			, lowerCamelCase			, lowerCamelCase			, lowerCamelCase="__start__"			, lowerCamelCase="__end__"			, lowerCamelCase="__unk__"			, lowerCamelCase="__null__"			, **lowerCamelCase			, )   ->     Optional[Any]:





								"""simple docstring"""


								super().__init__(unk_token=a_			, bos_token=a_			, eos_token=a_			, pad_token=a_			, **a_							)

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

	@property
	def        __a      (	self							)   ->     int:





								"""simple docstring"""


								return len(self.encoder							)

	def        __a      (	self							)   ->     Dict:





								"""simple docstring"""


								return dict(self.encoder			, **self.added_tokens_encoder							)

	def        __a      (	self			, lowerCamelCase							)   ->     str:





								"""simple docstring"""


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

								lowercase__    :			Tuple     =				token.split(" "							)
								lowercase__    :			Tuple     =				[]
								for token in tokens:
															if not len(a_							):
																						continue

															lowercase__    :			Optional[int]     =				token.lower()
															lowercase__    :			int     =				tuple(a_							)
															lowercase__    :			Tuple     =				tuple(list(word[:-1]							) + [word[-1] + "</w>"]							)
															lowercase__    :			Optional[int]     =				get_pairs(a_							)

															if not pairs:
																						words.append(a_							)
																						continue

															while True:
																						lowercase__    :			str     =				min(a_			, key=lambda lowerCamelCase							: self.bpe_ranks.get(a_			, float("inf"							)							)							)
																						if bigram not in self.bpe_ranks:
																													break
																						lowercase__    :			Optional[int]     =				bigram
																						lowercase__    :			Optional[int]     =				[]
																						lowercase__    :			Union[str, Any]     =				0

																						while i < len(a_							):
																													try:
																																				lowercase__    :			int     =				word.index(a_			, a_							)
																																				new_word.extend(word[i:j]							)
																																				lowercase__    :			Optional[int]     =				j
																													except ValueError:
																																				new_word.extend(word[i:]							)
																																				break

																													if word[i] == first and i < len(a_							) - 1 and word[i + 1] == second:
																																				new_word.append(first + second							)
																																				i += 2
																													else:
																																				new_word.append(word[i]							)
																																				i += 1
																						lowercase__    :			int     =				tuple(a_							)
																						lowercase__    :			List[Any]     =				new_word
																						if len(a_							) == 1:
																													break
																						else:
																													lowercase__    :			int     =				get_pairs(a_							)
															lowercase__    :			Optional[Any]     =				"@@ ".join(a_							)
															lowercase__    :			str     =				word[:-4]

															lowercase__    :			Union[str, Any]     =				word
															words.append(a_							)
								return " ".join(a_							)

	def        __a      (	self			, lowerCamelCase							)   ->     List[str]:





								"""simple docstring"""


								lowercase__    :			int     =				[]

								lowercase__    :			Tuple     =				re.findall(r"\S+\n?"			, a_							)

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

	def        __a      (	self			, lowerCamelCase							)   ->     int:





								"""simple docstring"""


								lowercase__    :			int     =				token.lower()
								return self.encoder.get(a_			, self.encoder.get(self.unk_token							)							)

	def        __a      (	self			, lowerCamelCase							)   ->     str:





								"""simple docstring"""


								return self.decoder.get(a_			, self.unk_token							)

	def        __a      (	self			, lowerCamelCase							)   ->     str:





								"""simple docstring"""


								lowercase__    :			Any     =				" ".join(a_							).replace("@@ "			, ""							).strip()
								return out_string







	def        __a      (	self			, lowerCamelCase			, lowerCamelCase = None							)   ->     Tuple[str]:





								"""simple docstring"""


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

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

								lowercase__    :			List[str]     =				0
								with open(a_			, "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!"							)
																													lowercase__    :			Optional[Any]     =				token_index
																						writer.write(" ".join(a_							) + "\n"							)
																						index += 1

								return vocab_file, merge_file






"""simple docstring"""






def      lowercase__ (					lowerCAmelCase__   :			str			)    ->			list[int]:



			'''simple docstring'''
			a__  :	List[str]		 =			[0 for i in range(len(lowerCAmelCase__			)			)]

			# initialize interval's left pointer and right pointer
			a__ ,	a__  :	int		 =			0, 0

			for i in range(1							,			len(lowerCAmelCase__			)			):
						# case when current index is inside the interval
						if i <= right_pointer:
									a__  :	List[Any]		 =			min(right_pointer - i + 1							,			z_result[i - left_pointer]			)
									a__  :	List[str]		 =			min_edge

						while go_next(lowerCAmelCase__							,			lowerCAmelCase__							,			lowerCAmelCase__			):
									z_result[i] += 1

						# if new index's result gives us more right interval,
						# we've to update left_pointer and right_pointer
						if i + z_result[i] - 1 > right_pointer:
									a__ ,	a__  :	str		 =			i, i + z_result[i] - 1

			return z_result






def      lowercase__ (					lowerCAmelCase__   :			int							,			lowerCAmelCase__   :			list[int]							,			lowerCAmelCase__   :			str			)    ->			bool:



			'''simple docstring'''
			return i + z_result[i] < len(lowerCAmelCase__			) and s[z_result[i]] == s[i + z_result[i]]






def      lowercase__ (					lowerCAmelCase__   :			str							,			lowerCAmelCase__   :			str			)    ->			int:



			'''simple docstring'''
			a__  :	List[Any]		 =			0
			# concatenate 'pattern' and 'input_str' and call z_function
			# with concatenated string
			a__  :	List[str]		 =			z_function(pattern + input_str			)

			for val in z_result:
						# if value is greater then length of the pattern string
						# that means this index is starting position of substring
						# which is equal to pattern string
						if val >= len(lowerCAmelCase__			):
									answer += 1

			return answer


if __name__ == "__main__":
		import doctest

		doctest.testmod()