
"""simple docstring"""

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

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


SCREAMING_SNAKE_CASE_         =  logging.get_logger(__name__)

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

SCREAMING_SNAKE_CASE_         =  {
    '''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'''},
}

SCREAMING_SNAKE_CASE_         =  {
    '''microsoft/biogpt''': 1024,
}




def       lowercase__  (   lowerCAmelCase			:   Dict	)	-> List[str]:






    """simple docstring"""




    UpperCAmelCase       =   set()
    UpperCAmelCase       =   word[0]
    for char in word[1:]:
        pairs.add((prev_char, char)	)
        UpperCAmelCase       =   char
    return pairs







class        _UpperCAmelCase							(						SCREAMING_SNAKE_CASE_							):
      __SCREAMING_SNAKE_CASE				:							Union[str, Any]							 =		VOCAB_FILES_NAMES
      __SCREAMING_SNAKE_CASE				:							Optional[int]							 =		PRETRAINED_VOCAB_FILES_MAP
      __SCREAMING_SNAKE_CASE				:							Optional[Any]							 =		PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
      __SCREAMING_SNAKE_CASE				:							Union[str, Any]							 =		["input_ids", "attention_mask"]




      def __init__(							self				,    lowercase_				,    lowercase_				,    lowercase_="<unk>"				,    lowercase_="<s>"				,    lowercase_="</s>"				,    lowercase_="</s>"				,    lowercase_="<pad>"				,    **lowercase_				,    )  ->   Dict:
          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.'							)

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




      @property
      def       a_ (							self							)  ->   str:
          return len(self.encoder							)




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




      def       a_ (							self				,    lowercase_				,    lowercase_							)  ->   Dict:
          if lang not in self.cache_moses_tokenizer:
              UpperCAmelCase       =   self.sm.MosesTokenizer(lang=lowercase_							)
              UpperCAmelCase       =   moses_tokenizer
          return self.cache_moses_tokenizer[lang].tokenize(
              lowercase_				,    aggressive_dash_splits=lowercase_				,    return_str=lowercase_				,    escape=lowercase_							)




      def       a_ (							self				,    lowercase_				,    lowercase_							)  ->   Optional[Any]:
          if lang not in self.cache_moses_detokenizer:
              UpperCAmelCase       =   self.sm.MosesDetokenizer(lang=lowercase_							)
              UpperCAmelCase       =   moses_detokenizer
          return self.cache_moses_detokenizer[lang].detokenize(lowercase_							)




      def       a_ (							self				,    lowercase_							)  ->   List[Any]:
          UpperCAmelCase       =   tuple(token[:-1]							) + (token[-1] + '</w>',)
          if token in self.cache:
              return self.cache[token]
          UpperCAmelCase       =   get_pairs(lowercase_							)

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

          while True:
              UpperCAmelCase       =   min(lowercase_				,    key=lambda lowercase_							: self.bpe_ranks.get(lowercase_				,    float('inf'							)							)							)
              if bigram not in self.bpe_ranks:
                  break
              UpperCAmelCase     ,							UpperCAmelCase       =   bigram
              UpperCAmelCase       =   []
              UpperCAmelCase       =   0
              while i < len(lowercase_							):
                  try:
                      UpperCAmelCase       =   word.index(lowercase_				,    lowercase_							)
                  except ValueError:
                      new_word.extend(word[i:]							)
                      break
                  else:
                      new_word.extend(word[i:j]							)
                      UpperCAmelCase       =   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
              UpperCAmelCase       =   tuple(lowercase_							)
              UpperCAmelCase       =   new_word
              if len(lowercase_							) == 1:
                  break
              else:
                  UpperCAmelCase       =   get_pairs(lowercase_							)
          UpperCAmelCase       =   ' '.join(lowercase_							)
          if word == "\n  </w>":
              UpperCAmelCase       =   '\n</w>'
          UpperCAmelCase       =   word
          return word




      def       a_ (							self				,    lowercase_				,    lowercase_=False							)  ->   Dict:
          if bypass_tokenizer:
              UpperCAmelCase       =   text.split()
          else:
              UpperCAmelCase       =   self.moses_tokenize(lowercase_				,    self.lang							)

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

          return split_tokens




      def       a_ (							self				,    lowercase_							)  ->   Optional[Any]:
          return self.encoder.get(lowercase_				,    self.encoder.get(self.unk_token							)							)




      def       a_ (							self				,    lowercase_							)  ->   Any:
          return self.decoder.get(lowercase_				,    self.unk_token							)




      def       a_ (							self				,    lowercase_							)  ->   Optional[Any]:
          UpperCAmelCase       =   [t.replace(' '				,    ''							).replace('</w>'				,    ' '							) for t in tokens]
          UpperCAmelCase       =   ''.join(lowercase_							).split()
          # detokenize
          UpperCAmelCase       =   self.moses_detokenize(lowercase_				,    self.lang							)
          return text




      def       a_ (							self				,    lowercase_				,    lowercase_ = None							)  ->   List[int]:
          if token_ids_a is None:
              return [self.sep_token_id] + token_ids_a
          UpperCAmelCase       =   [self.sep_token_id]
          return sep + token_ids_a + sep + token_ids_a




      def       a_ (							self				,    lowercase_				,    lowercase_ = None				,    lowercase_ = False							)  ->   List[int]:
          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       a_ (							self				,    lowercase_				,    lowercase_ = None							)  ->   List[int]:
          UpperCAmelCase       =   [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       a_ (							self				,    lowercase_				,    lowercase_ = None							)  ->   Tuple[str]:
          if not os.path.isdir(lowercase_							):
              logger.error(F"Vocabulary path ({save_directory}) should be a directory"							)
              return
          UpperCAmelCase       =   os.path.join(
              lowercase_				,    (filename_prefix + '-' if filename_prefix else '') + VOCAB_FILES_NAMES['vocab_file']							)
          UpperCAmelCase       =   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'							)

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

          return vocab_file, merge_file




      def __getstate__(							self							)  ->   Dict:
          UpperCAmelCase       =   self.__dict__.copy()
          UpperCAmelCase       =   None
          return state




      def __setstate__(							self				,    lowercase_							)  ->   int:
          UpperCAmelCase       =   d

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

          UpperCAmelCase       =   sacremoses





"""simple docstring"""

from __future__ import annotations

SCREAMING_SNAKE_CASE_         =  '''Alexander Joslin'''




def       lowercase__  (   lowerCAmelCase			:   int	)	-> int:






    """simple docstring"""




    if number <= 0:
        UpperCAmelCase       =   F"n must be greater than 0. Got n = {number}"
        raise ValueError(lowerCAmelCase	)

    UpperCAmelCase       =   [number + 1] * (number + 1)

    # starting position
    UpperCAmelCase       =   0
    for i in range(1	,			lowerCAmelCase	):
        UpperCAmelCase       =   min(table[i + 1]	,			table[i] + 1	)
        # check if out of bounds
        if i * 2 <= number:
            UpperCAmelCase       =   min(table[i * 2]	,			table[i] + 1	)
        # check if out of bounds
        if i * 3 <= number:
            UpperCAmelCase       =   min(table[i * 3]	,			table[i] + 1	)
    return table[number]


if __name__ == "__main__":
   import doctest

   doctest.testmod()



