"""simple docstring"""


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

import regex as re

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


UpperCAmelCase__			=    logging.get_logger(__name__)


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

UpperCAmelCase__			=    {
    """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"""
        )
    },
}

UpperCAmelCase__			=    {"""facebook/blenderbot_small-90M""": 5_1_2}






def      __UpperCAmelCase       (      lowercase		):







  """simple docstring"""
  _UpperCAmelCase    			=   set()
  _UpperCAmelCase    			=   word[0]
  for char in word[1:]:
    pairs.add((prev_char, char)		)
    _UpperCAmelCase    			=   char

  _UpperCAmelCase    			=   set(lowercase		)
  return pairs


class 							a					(		lowerCAmelCase_ ):
    _snake_case  :	Any  				=				VOCAB_FILES_NAMES
    _snake_case  :	Any  				=				PRETRAINED_VOCAB_FILES_MAP
    _snake_case  :	Optional[Any]  				=				PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
    _snake_case  :	Any  				=				['input_ids', 'attention_mask']


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

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


    @property
    def   lowerCAmelCase_	(       self						:	Optional[Any]       ):
      return len(self.encoder       )


    def   lowerCAmelCase_	(       self						:	Dict       ):
      return dict(self.encoder ,					**self.added_tokens_encoder       )


    def   lowerCAmelCase_	(       self						:	List[Any] ,					__lowerCAmelCase						:	str       ):
      if token in self.cache:
        return self.cache[token]
      _UpperCAmelCase    			=   re.sub("""([.,!?()])""" ,					R""" \1""" ,					__lowerCAmelCase       )
      _UpperCAmelCase    			=   re.sub("""(')""" ,					R""" \1 """ ,					__lowerCAmelCase       )
      _UpperCAmelCase    			=   re.sub(R"""\s{2,}""" ,					""" """ ,					__lowerCAmelCase       )
      if "\n" in token:
        _UpperCAmelCase    			=   token.replace("""\n""" ,					""" __newln__"""       )

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

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

        if not pairs:
          words.append(__lowerCAmelCase       )
          continue

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

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

            if word[i] == first and i < len(__lowerCAmelCase       ) - 1 and word[i + 1] == second:
              new_word.append(first + second       )
              i += 2
            else:
              new_word.append(word[i]       )
              i += 1
          _UpperCAmelCase    			=   tuple(__lowerCAmelCase       )
          _UpperCAmelCase    			=   new_word
          if len(__lowerCAmelCase       ) == 1:
            break
          else:
            _UpperCAmelCase    			=   get_pairs(__lowerCAmelCase       )
        _UpperCAmelCase    			=   """@@ """.join(__lowerCAmelCase       )
        _UpperCAmelCase    			=   word[:-4]

        _UpperCAmelCase    			=   word
        words.append(__lowerCAmelCase       )
      return " ".join(__lowerCAmelCase       )


    def   lowerCAmelCase_	(       self						:	List[Any] ,					__lowerCAmelCase						:	str       ):
      _UpperCAmelCase    			=   []

      _UpperCAmelCase    			=   re.findall(R"""\S+\n?""" ,					__lowerCAmelCase       )

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


    def   lowerCAmelCase_	(       self						:	Optional[int] ,					__lowerCAmelCase						:	str       ):
      _UpperCAmelCase    			=   token.lower()
      return self.encoder.get(__lowerCAmelCase ,					self.encoder.get(self.unk_token       )       )


    def   lowerCAmelCase_	(       self						:	int ,					__lowerCAmelCase						:	int       ):
      return self.decoder.get(__lowerCAmelCase ,					self.unk_token       )


    def   lowerCAmelCase_	(       self						:	Tuple ,					__lowerCAmelCase						:	List[str]       ):
      _UpperCAmelCase    			=   """ """.join(__lowerCAmelCase       ).replace("""@@ """ ,					""""""       ).strip()
      return out_string


    def   lowerCAmelCase_	(       self						:	Union[str, Any] ,					__lowerCAmelCase						:	str ,					__lowerCAmelCase						:	Optional[str] = None       ):
      if not os.path.isdir(__lowerCAmelCase       ):
        logger.error(f'''Vocabulary path ({save_directory}) should be a directory'''       )
        return
      _UpperCAmelCase    			=   os.path.join(
          __lowerCAmelCase ,					(filename_prefix + """-""" if filename_prefix else """""") + VOCAB_FILES_NAMES["""vocab_file"""]       )
      _UpperCAmelCase    			=   os.path.join(
          __lowerCAmelCase ,					(filename_prefix + """-""" if filename_prefix else """""") + VOCAB_FILES_NAMES["""merges_file"""]       )

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

      _UpperCAmelCase    			=   0
      with open(__lowerCAmelCase ,					"""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!"""       )
            _UpperCAmelCase    			=   token_index
          writer.write(""" """.join(__lowerCAmelCase       ) + """\n"""       )
          index += 1

      return vocab_file, merge_file

"""simple docstring"""


import json
import os
import unittest

from transformers import MgpstrTokenizer
from transformers.models.mgp_str.tokenization_mgp_str import VOCAB_FILES_NAMES
from transformers.testing_utils import require_tokenizers

from ...test_tokenization_common import TokenizerTesterMixin


@require_tokenizers
class 							a					(		lowerCAmelCase_						,				unittest.TestCase ):
    _snake_case  :	Dict  				=				MgpstrTokenizer
    _snake_case  :	Any  				=				False
    _snake_case  :	str  				=				{}
    _snake_case  :	Dict  				=				False


    def   lowerCAmelCase_	(       self						:	int       ):
      super().setUp()

      # fmt: off
      _UpperCAmelCase    			=   ["""[GO]""", """[s]""", """0""", """1""", """2""", """3""", """4""", """5""", """6""", """7""", """8""", """9""", """a""", """b""", """c""", """d""", """e""", """f""", """g""", """h""", """i""", """j""", """k""", """l""", """m""", """n""", """o""", """p""", """q""", """r""", """s""", """t""", """u""", """v""", """w""", """x""", """y""", """z"""]
      # fmt: on
      _UpperCAmelCase    			=   dict(zip(__lowerCAmelCase ,					range(len(__lowerCAmelCase       )       )       )       )

      _UpperCAmelCase    			=   os.path.join(self.tmpdirname ,					VOCAB_FILES_NAMES["""vocab_file"""]       )
      with open(self.vocab_file ,					"""w""" ,					encoding="""utf-8"""       ) as fp:
        fp.write(json.dumps(__lowerCAmelCase       ) + """\n"""       )


    def   lowerCAmelCase_	(       self						:	Tuple ,					**__lowerCAmelCase						:	Dict       ):
      return MgpstrTokenizer.from_pretrained(self.tmpdirname ,					**__lowerCAmelCase       )


    def   lowerCAmelCase_	(       self						:	List[str] ,					__lowerCAmelCase						:	int       ):
      _UpperCAmelCase    			=   """tester"""
      _UpperCAmelCase    			=   """tester"""
      return input_text, output_text


    @unittest.skip("""MGP-STR always lower cases letters."""       )
    def   lowerCAmelCase_	(       self						:	Tuple       ):
      pass


    def   lowerCAmelCase_	(       self						:	Any       ):
      _UpperCAmelCase    			=   self.get_tokenizers(do_lower_case=__lowerCAmelCase       )
      for tokenizer in tokenizers:
        with self.subTest(f'''{tokenizer.__class__.__name__}'''       ):
          _UpperCAmelCase    			=   """[SPECIAL_TOKEN]"""

          tokenizer.add_special_tokens({"""cls_token""": special_token}       )
          _UpperCAmelCase    			=   tokenizer.encode([special_token] ,					add_special_tokens=__lowerCAmelCase       )
          self.assertEqual(len(__lowerCAmelCase       ) ,					1       )

          _UpperCAmelCase    			=   tokenizer.decode(__lowerCAmelCase ,					skip_special_tokens=__lowerCAmelCase       )
          self.assertTrue(special_token not in decoded       )


    def   lowerCAmelCase_	(       self						:	List[str]       ):
      _UpperCAmelCase    			=   self.get_tokenizers()
      for tokenizer in tokenizers:
        with self.subTest(f'''{tokenizer.__class__.__name__}'''       ):
          _UpperCAmelCase			,					_UpperCAmelCase    			=   self.get_input_output_texts(__lowerCAmelCase       )

          _UpperCAmelCase    			=   tokenizer.tokenize(__lowerCAmelCase       )
          _UpperCAmelCase    			=   tokenizer.convert_tokens_to_ids(__lowerCAmelCase       )
          _UpperCAmelCase    			=   tokenizer.encode(__lowerCAmelCase ,					add_special_tokens=__lowerCAmelCase       )
          self.assertListEqual(__lowerCAmelCase ,					__lowerCAmelCase       )

          _UpperCAmelCase    			=   tokenizer.convert_ids_to_tokens(__lowerCAmelCase       )
          self.assertNotEqual(len(__lowerCAmelCase       ) ,					0       )
          _UpperCAmelCase    			=   tokenizer.decode(__lowerCAmelCase       )
          self.assertIsInstance(__lowerCAmelCase ,					__lowerCAmelCase       )

          self.assertEqual(text_a.replace(""" """ ,					""""""       ) ,					__lowerCAmelCase       )


    @unittest.skip("""MGP-STR tokenizer only handles one sequence."""       )
    def   lowerCAmelCase_	(       self						:	List[str]       ):
      pass


    @unittest.skip("""inputs cannot be pretokenized in MgpstrTokenizer"""       )
    def   lowerCAmelCase_	(       self						:	Optional[int]       ):
      pass
