



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

import regex as re

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


lowercase_						=			logging.get_logger(__name__)


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

lowercase_						=			{
    """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"""
        )
    },
}

lowercase_						=			{"""facebook/blenderbot_small-90M""": 512}



def __lowerCAmelCase	(       SCREAMING_SNAKE_CASE_					):
			lowercase__   					=			set()
			lowercase__   					=			word[0]
			for char in word[1:]:
						pairs.add((prev_char, char)					)
						lowercase__   					=			char

			lowercase__   					=			set(SCREAMING_SNAKE_CASE_					)
			return pairs




class 			_snake_case     (   lowercase__):
				UpperCamelCase__			:   List[Any]       						=VOCAB_FILES_NAMES
				UpperCamelCase__			:   Union[str, Any]       						=PRETRAINED_VOCAB_FILES_MAP
				UpperCamelCase__			:   Union[str, Any]       						=PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
				UpperCamelCase__			:   List[str]       						=["""input_ids""", """attention_mask"""]




				def __init__(  self   :  int,   __lowercase   :  List[Any],   __lowercase   :  Any,   __lowercase   :  Any="__start__",   __lowercase   :  Any="__end__",   __lowercase   :  List[str]="__unk__",   __lowercase   :  List[Any]="__null__",   **__lowercase   :  List[str],   ):
							super().__init__(unk_token=__lowercase,   bos_token=__lowercase,   eos_token=__lowercase,   pad_token=__lowercase,   **__lowercase  )

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




				@property
				def 							A__ (  self   :  Tuple  ):
							return len(self.encoder  )




				def 							A__ (  self   :  List[Any]  ):
							return dict(self.encoder,   **self.added_tokens_encoder  )




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

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

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

										if not pairs:
													words.append(__lowercase  )
													continue

										while True:
													lowercase__   					=			min(__lowercase,   key=lambda __lowercase  : self.bpe_ranks.get(__lowercase,   float("inf"  )  )  )
													if bigram not in self.bpe_ranks:
																break
													lowercase__					,    lowercase__   					=			bigram
													lowercase__   					=			[]
													lowercase__   					=			0

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

																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
													lowercase__   					=			tuple(__lowercase  )
													lowercase__   					=			new_word
													if len(__lowercase  ) == 1:
																break
													else:
																lowercase__   					=			get_pairs(__lowercase  )
										lowercase__   					=			"@@ ".join(__lowercase  )
										lowercase__   					=			word[:-4]

										lowercase__   					=			word
										words.append(__lowercase  )
							return " ".join(__lowercase  )




				def 							A__ (  self   :  Tuple,   __lowercase   :  str  ):
							lowercase__   					=			[]

							lowercase__   					=			re.findall(R"\S+\n?",   __lowercase  )

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




				def 							A__ (  self   :  str,   __lowercase   :  str  ):
							lowercase__   					=			token.lower()
							return self.encoder.get(__lowercase,   self.encoder.get(self.unk_token  )  )




				def 							A__ (  self   :  Tuple,   __lowercase   :  int  ):
							return self.decoder.get(__lowercase,   self.unk_token  )




				def 							A__ (  self   :  Any,   __lowercase   :  List[str]  ):
							lowercase__   					=			" ".join(__lowercase  ).replace("@@ ",   ""  ).strip()
							return out_string




				def 							A__ (  self   :  List[str],   __lowercase   :  str,   __lowercase   :  Optional[str] = None  ):
							if not os.path.isdir(__lowercase  ):
										logger.error(F'''Vocabulary path ({save_directory}) should be a directory'''  )
										return
							lowercase__   					=			os.path.join(
							    __lowercase,   (filename_prefix + "-" if filename_prefix else "") + VOCAB_FILES_NAMES["vocab_file"]  )
							lowercase__   					=			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"  )

							lowercase__   					=			0
							with open(__lowercase,   "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 __lowercase  : 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__   					=			token_index
													writer.write(" ".join(__lowercase  ) + "\n"  )
													index += 1

							return vocab_file, merge_file









from __future__ import annotations

from typing import TypedDict
class 			_snake_case     (   lowercase__):
				UpperCamelCase__			:   str
				UpperCamelCase__			:   int



def __lowerCAmelCase	(       SCREAMING_SNAKE_CASE_					):
			if not isinstance(SCREAMING_SNAKE_CASE_  ,					SCREAMING_SNAKE_CASE_					):
						raise TypeError("The parameter s type must be str."					)

			return [s[i:] + s[:i] for i in range(len(SCREAMING_SNAKE_CASE_					)					)]



def __lowerCAmelCase	(       SCREAMING_SNAKE_CASE_					):
			if not isinstance(SCREAMING_SNAKE_CASE_  ,					SCREAMING_SNAKE_CASE_					):
						raise TypeError("The parameter s type must be str."					)
			if not s:
						raise ValueError("The parameter s must not be empty."					)

			lowercase__   					=			all_rotations(SCREAMING_SNAKE_CASE_					)
			rotations.sort()  # sort the list of rotations in alphabetically order
			# make a string composed of the last char of each rotation
			lowercase__   					=			{
			    "bwt_string": "".join([word[-1] for word in rotations]					),
			    "idx_original_string": rotations.index(SCREAMING_SNAKE_CASE_					),
			}
			return response



def __lowerCAmelCase	(       SCREAMING_SNAKE_CASE_  ,					SCREAMING_SNAKE_CASE_					):
			if not isinstance(SCREAMING_SNAKE_CASE_  ,					SCREAMING_SNAKE_CASE_					):
						raise TypeError("The parameter bwt_string type must be str."					)
			if not bwt_string:
						raise ValueError("The parameter bwt_string must not be empty."					)
			try:
						lowercase__   					=			int(SCREAMING_SNAKE_CASE_					)
			except ValueError:
						raise TypeError(
						    "The parameter idx_original_string type must be int or passive"
						    " of cast to int."					)
			if idx_original_string < 0:
						raise ValueError("The parameter idx_original_string must not be lower than 0."					)
			if idx_original_string >= len(SCREAMING_SNAKE_CASE_					):
						raise ValueError(
						    "The parameter idx_original_string must be lower than" " len(bwt_string)."					)

			lowercase__   					=			[""] * len(SCREAMING_SNAKE_CASE_					)
			for _ in range(len(SCREAMING_SNAKE_CASE_					)					):
						for i in range(len(SCREAMING_SNAKE_CASE_					)					):
									lowercase__   					=			bwt_string[i] + ordered_rotations[i]
						ordered_rotations.sort()
			return ordered_rotations[idx_original_string]


if __name__ == "__main__":
							lowercase_						=       """Provide a string that I will generate its BWT transform: """
							lowercase_						=       input(entry_msg).strip()
							lowercase_						=       bwt_transform(s)
							print(
							    F'Burrows Wheeler transform for string \'{s}\' results '
							    F'in \'{result["bwt_string"]}\''
							)
							lowercase_						=       reverse_bwt(result["""bwt_string"""], result["""idx_original_string"""])
							print(
							    F'Reversing Burrows Wheeler transform for entry \'{result["bwt_string"]}\' '
							    F'we get original string \'{original_string}\''
							)




