


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

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


SCREAMING_SNAKE_CASE       :		Tuple         =				logging.get_logger(__name__)


SCREAMING_SNAKE_CASE       :		Optional[int]         =				{
    "vocab_file": "vocab.json",
    "tokenizer_config_file": "tokenizer_config.json",
    "merges_file": "merges.txt",
}

SCREAMING_SNAKE_CASE       :		List[Any]         =				{
    "vocab_file": {
        "facebook/s2t-wav2vec2-large-en-de": (
            "https://huggingface.co/facebook/s2t-wav2vec2-large-en-de/resolve/main/vocab.json"
        ),
    },
    "tokenizer_config_file": {
        "facebook/s2t-wav2vec2-large-en-de": (
            "https://huggingface.co/facebook/s2t-wav2vec2-large-en-de/resolve/main/tokenizer_config.json"
        ),
    },
    "merges_file": {
        "facebook/s2t-wav2vec2-large-en-de": (
            "https://huggingface.co/facebook/s2t-wav2vec2-large-en-de/resolve/main/merges.txt"
        ),
    },
}

SCREAMING_SNAKE_CASE       :		Tuple         =				"</w>"
SCREAMING_SNAKE_CASE       :		List[str]         =				"@@ "




def     UpperCamelCase    (      _a		)					->							List[Any]:
     '''simple docstring'''





     lowercase_       :Union[str, Any]     =       set()
     lowercase_       :Tuple     =       word[0]
     for char in word[1:]:
          pairs.add((prev_char, char)		)
          lowercase_       :Union[str, Any]     =       char
     return pairs


# Speech2Text2 has no max input length
SCREAMING_SNAKE_CASE       :		int         =				{"facebook/s2t-wav2vec2-large-en-de": 1_024}






class      UpperCamelCase					(		lowercase__     ):


   '''simple docstring'''







   lowercase					:	str									=VOCAB_FILES_NAMES
   lowercase					:	Dict									=PRETRAINED_VOCAB_FILES_MAP
   lowercase					:	Any									=PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
   lowercase					:	Tuple									=["""input_ids""", """attention_mask"""]
   def __init__(     self   ,							UpperCamelCase_   ,							UpperCamelCase_="<s>"   ,							UpperCamelCase_="<pad>"   ,							UpperCamelCase_="</s>"   ,							UpperCamelCase_="<unk>"   ,							UpperCamelCase_=False   ,							UpperCamelCase_=None   ,							**UpperCamelCase_   ,							):
        super().__init__(
            unk_token=UpperCamelCase_   ,							bos_token=UpperCamelCase_   ,							eos_token=UpperCamelCase_   ,							pad_token=UpperCamelCase_   ,							do_lower_case=UpperCamelCase_   ,							**UpperCamelCase_   ,							)

        lowercase_       :List[str]     =       do_lower_case

        with open(UpperCamelCase_   ,							encoding='''utf-8'''		) as vocab_handle:
             lowercase_       :Dict     =       json.load(UpperCamelCase_		)
        lowercase_       :Any     =       {v: k for k, v in self.encoder.items()}

        if merges_file is None:
             logger.info(f"No merges files provided. {self.__class__.__name__} can only be used for decoding."		)

             lowercase_       :Optional[int]     =       None
             lowercase_       :int     =       None
        else:
             with open(UpperCamelCase_   ,							encoding='''utf-8'''		) as merges_handle:
                  lowercase_       :Optional[Any]     =       merges_handle.read().split('''\n'''		)[:-1]

             lowercase_       :List[str]     =       [tuple(merge.split()[:2]		) for merge in merges]
             lowercase_       :List[str]     =       dict(zip(UpperCamelCase_   ,							range(len(UpperCamelCase_		)		)		)		)
             lowercase_       :Any     =       {}
   @property
   def 		UpperCamelCase  (     self		):
        return len(self.decoder		)
   def 		UpperCamelCase  (     self		):
        return dict(self.encoder   ,							**self.added_tokens_encoder		)
   def 		UpperCamelCase  (     self   ,							UpperCamelCase_		):
        lowercase_       :Optional[Any]     =       tuple(token[:-1]		) + (token[-1] + BPE_TOKEN_MERGES,)
        if token in self.cache:
             return self.cache[token]
        lowercase_       :Union[str, Any]     =       get_pairs(UpperCamelCase_		)

        if not pairs:
             return token

        while True:
             lowercase_       :Union[str, Any]     =       min(UpperCamelCase_   ,							key=lambda UpperCamelCase_		: self.bpe_ranks.get(UpperCamelCase_   ,							float('''inf'''		)		)		)
             if bigram not in self.bpe_ranks:
                  break
             lowercase_    ,      lowercase_       :Union[str, Any]     =       bigram
             lowercase_       :Any     =       []
             lowercase_       :Optional[Any]     =       0
             while i < len(UpperCamelCase_		):
                  try:
                       lowercase_       :Optional[int]     =       word.index(UpperCamelCase_   ,							UpperCamelCase_		)
                  except ValueError:
                       new_word.extend(word[i:]		)
                       break
                  else:
                       new_word.extend(word[i:j]		)
                       lowercase_       :Dict     =       j

                  if word[i] == first and i < len(UpperCamelCase_		) - 1 and word[i + 1] == second:
                       new_word.append(first + second		)
                       i += 2
                  else:
                       new_word.append(word[i]		)
                       i += 1
             lowercase_       :Dict     =       tuple(UpperCamelCase_		)
             lowercase_       :Optional[Any]     =       new_word
             if len(UpperCamelCase_		) == 1:
                  break
             else:
                  lowercase_       :Union[str, Any]     =       get_pairs(UpperCamelCase_		)
        lowercase_       :Dict     =       ''' '''.join(UpperCamelCase_		)
        if word == "\n  " + BPE_TOKEN_MERGES:
             lowercase_       :str     =       '''\n''' + BPE_TOKEN_MERGES

        if word.endswith(UpperCamelCase_		):
             lowercase_       :str     =       word.replace(UpperCamelCase_   ,							''''''		)

        lowercase_       :List[Any]     =       word.replace(''' '''   ,							UpperCamelCase_		)
        lowercase_       :int     =       word
        return word
   def 		UpperCamelCase  (     self   ,							UpperCamelCase_		):

        if self.bpe_ranks is None:
             raise ValueError(
                 '''This tokenizer was instantiated without a `merges.txt` file, so'''
                 ''' that it can only be used for decoding, not for encoding.'''
                 '''Make sure to provide `merges.txt` file at instantiation to enable '''
                 '''encoding.'''		)

        if self.do_lower_case:
             lowercase_       :Tuple     =       text.lower()

        lowercase_       :int     =       text.split()

        lowercase_       :Tuple     =       []
        for token in text:
             if token:
                  split_tokens.extend(list(self.bpe(UpperCamelCase_		).split(''' '''		)		)		)

        return split_tokens
   def 		UpperCamelCase  (     self   ,							UpperCamelCase_		):
        return self.encoder.get(UpperCamelCase_   ,							self.encoder.get(self.unk_token		)		)
   def 		UpperCamelCase  (     self   ,							UpperCamelCase_		):
        lowercase_       :int     =       self.decoder.get(UpperCamelCase_   ,							self.unk_token		)
        return result
   def 		UpperCamelCase  (     self   ,							UpperCamelCase_		):
        lowercase_       :Optional[Any]     =       ''' '''.join(UpperCamelCase_		)

        # make sure @@ tokens are concatenated
        lowercase_       :str     =       ''''''.join(string.split(UpperCamelCase_		)		)

        return string




   def 		UpperCamelCase  (     self   ,							UpperCamelCase_   ,							UpperCamelCase_ = None		):
        if not os.path.isdir(UpperCamelCase_		):
             logger.error(f"Vocabulary path ({save_directory}) should be a directory"		)
             return
        lowercase_       :int     =       os.path.join(
            UpperCamelCase_   ,							(filename_prefix + '''-''' if filename_prefix else '''''') + VOCAB_FILES_NAMES['''vocab_file''']		)
        lowercase_       :str     =       os.path.join(
            UpperCamelCase_   ,							(filename_prefix + '''-''' if filename_prefix else '''''') + VOCAB_FILES_NAMES['''merges_file''']		)

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

        lowercase_       :Optional[Any]     =       0
        if self.bpe_ranks is None:
             return (vocab_file,)

        with open(UpperCamelCase_   ,							'''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 {merges_file}: BPE merge indices are not consecutive."
                           ''' Please check that the tokenizer is not corrupted!'''		)
                       lowercase_       :Optional[int]     =       token_index
                  writer.write(''' '''.join(UpperCamelCase_		) + '''\n'''		)
                  index += 1

        return (vocab_file, merges_file)





def     UpperCamelCase    (      _a		)					->							int:
     '''simple docstring'''





     assert isinstance(_a       ,		_a		), f"The input value of [n={number}] is not an integer"

     if number == 1:
          return 2
     elif number < 1:
          lowercase_       :str     =       f"The input value of [n={number}] has to be > 0"
          raise ValueError(_a		)
     else:
          lowercase_       :List[str]     =       sylvester(number - 1		)
          lowercase_       :Union[str, Any]     =       num - 1
          lowercase_       :List[str]     =       num
          return lower * upper + 1


if __name__ == "__main__":
   print(f"The 8th number in Sylvester's sequence: {sylvester(8)}")

