import sacrebleu as scb
from packaging import version
from sacrebleu import CHRF

import datasets


_lowerCamelCase					:   Tuple							=		'''\
@inproceedings{popovic-2015-chrf,
    title = "chr{F}: character n-gram {F}-score for automatic {MT} evaluation",
    author = "Popovi{\'c}, Maja",
    booktitle = "Proceedings of the Tenth Workshop on Statistical Machine Translation",
    month = sep,
    year = "2015",
    address = "Lisbon, Portugal",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/W15-3049",
    doi = "10.18653/v1/W15-3049",
    pages = "392--395",
}
@inproceedings{popovic-2017-chrf,
    title = "chr{F}++: words helping character n-grams",
    author = "Popovi{\'c}, Maja",
    booktitle = "Proceedings of the Second Conference on Machine Translation",
    month = sep,
    year = "2017",
    address = "Copenhagen, Denmark",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/W17-4770",
    doi = "10.18653/v1/W17-4770",
    pages = "612--618",
}
@inproceedings{post-2018-call,
    title = "A Call for Clarity in Reporting {BLEU} Scores",
    author = "Post, Matt",
    booktitle = "Proceedings of the Third Conference on Machine Translation: Research Papers",
    month = oct,
    year = "2018",
    address = "Belgium, Brussels",
    publisher = "Association for Computational Linguistics",
    url = "https://www.aclweb.org/anthology/W18-6319",
    pages = "186--191",
}
'''

_lowerCamelCase					:   Optional[Any]							=		'''\
ChrF and ChrF++ are two MT evaluation metrics. They both use the F-score statistic for character n-gram matches,
and ChrF++ adds word n-grams as well which correlates more strongly with direct assessment. We use the implementation
that is already present in sacrebleu.

The implementation here is slightly different from sacrebleu in terms of the required input format. The length of
the references and hypotheses lists need to be the same, so you may need to transpose your references compared to
sacrebleu\'s required input format. See https://github.com/huggingface/datasets/issues/3154#issuecomment-950746534

See the README.md file at https://github.com/mjpost/sacreBLEU#chrf--chrf for more information.
'''

_lowerCamelCase					:   Tuple							=		'''
Produces ChrF(++) scores for hypotheses given reference translations.

Args:
    predictions (list of str): The predicted sentences.
    references (list of list of str): The references. There should be one reference sub-list for each prediction sentence.
    char_order (int): Character n-gram order. Defaults to `6`.
    word_order (int): Word n-gram order. If equals to `2`, the metric is referred to as chrF++. Defaults to `0`.
    beta (int): Determine the importance of recall w.r.t precision. Defaults to `2`.
    lowercase (bool): if `True`, enables case-insensitivity. Defaults to `False`.
    whitespace (bool): If `True`, include whitespaces when extracting character n-grams.
    eps_smoothing (bool): If `True`, applies epsilon smoothing similar
    to reference chrF++.py, NLTK and Moses implementations. If `False`,
    it takes into account effective match order similar to sacreBLEU < 2.0.0. Defaults to `False`.

Returns:
    \'score\' (float): The chrF (chrF++) score,
    \'char_order\' (int): The character n-gram order,
    \'word_order\' (int): The word n-gram order. If equals to 2, the metric is referred to as chrF++,
    \'beta\' (int): Determine the importance of recall w.r.t precision

Examples:
    Example 1--a simple example of calculating chrF:
        >>> prediction = ["The relationship between cats and dogs is not exactly friendly.", "a good bookshop is just a genteel black hole that knows how to read."]
        >>> reference = [["The relationship between dogs and cats is not exactly friendly."], ["A good bookshop is just a genteel Black Hole that knows how to read."]]
        >>> chrf = datasets.load_metric("chrf")
        >>> results = chrf.compute(predictions=prediction, references=reference)
        >>> print(results)
        {\'score\': 84.64214891738334, \'char_order\': 6, \'word_order\': 0, \'beta\': 2}

    Example 2--the same example, but with the argument word_order=2, to calculate chrF++ instead of chrF:
        >>> prediction = ["The relationship between cats and dogs is not exactly friendly.", "a good bookshop is just a genteel black hole that knows how to read."]
        >>> reference = [["The relationship between dogs and cats is not exactly friendly."], ["A good bookshop is just a genteel Black Hole that knows how to read."]]
        >>> chrf = datasets.load_metric("chrf")
        >>> results = chrf.compute(predictions=prediction,
        ...                         references=reference,
        ...                         word_order=2)
        >>> print(results)
        {\'score\': 82.87263732906315, \'char_order\': 6, \'word_order\': 2, \'beta\': 2}

    Example 3--the same chrF++ example as above, but with `lowercase=True` to normalize all case:
        >>> prediction = ["The relationship between cats and dogs is not exactly friendly.", "a good bookshop is just a genteel black hole that knows how to read."]
        >>> reference = [["The relationship between dogs and cats is not exactly friendly."], ["A good bookshop is just a genteel Black Hole that knows how to read."]]
        >>> chrf = datasets.load_metric("chrf")
        >>> results = chrf.compute(predictions=prediction,
        ...                         references=reference,
        ...                         word_order=2,
        ...                         lowercase=True)
        >>> print(results)
        {\'score\': 92.12853119829202, \'char_order\': 6, \'word_order\': 2, \'beta\': 2}
'''


@datasets.utils.file_utils.add_start_docstrings(_DESCRIPTION				,       _KWARGS_DESCRIPTION     )
class 						lowercase    (     datasets.Metric     ):




							def 	__snake_case(						self   :					Optional[int]      )					->				Optional[int]:



												'''simple docstring'''

												if version.parse(scb.__version__      ) < version.parse("1.4.12"      ):
																	raise ImportWarning(
																	    "To use `sacrebleu`, the module `sacrebleu>=1.4.12` is required, and the current version of `sacrebleu` doesn't match this condition.\n"
																	    "You can install it with `pip install \"sacrebleu>=1.4.12\"`."      )
												return datasets.MetricInfo(
												    description=_DESCRIPTION	,							citation=_CITATION	,							homepage="https://github.com/mjpost/sacreBLEU#chrf--chrf"	,							inputs_description=_KWARGS_DESCRIPTION	,							features=datasets.Features(
												        {
												            "predictions": datasets.Value("string"	,							id="sequence"      ),
												            "references": datasets.Sequence(datasets.Value("string"	,							id="sequence"      )	,							id="references"      ),
												        }      )	,							codebase_urls=["https://github.com/mjpost/sacreBLEU#chrf--chrf"]	,							reference_urls=[
												        "https://github.com/m-popovic/chrF",
												    ]	,							)





							def 	__snake_case(						self   :					Optional[int]	,							_UpperCamelCase   :					Optional[Any]	,							_UpperCamelCase   :					Any	,							_UpperCamelCase   :					int = CHRF.CHAR_ORDER	,							_UpperCamelCase   :					int = CHRF.WORD_ORDER	,							_UpperCamelCase   :					int = CHRF.BETA	,							_UpperCamelCase   :					bool = False	,							_UpperCamelCase   :					bool = False	,							_UpperCamelCase   :					bool = False	,							)					->				int:



												'''simple docstring'''

												SCREAMING_SNAKE_CASE    			=       len(references[0]      )
												if any(len(_UpperCamelCase      ) != references_per_prediction for refs in references      ):
																	raise ValueError("Sacrebleu requires the same number of references for each prediction"      )
												SCREAMING_SNAKE_CASE    			=       [[refs[i] for refs in references] for i in range(_UpperCamelCase      )]

												SCREAMING_SNAKE_CASE    			=       CHRF(_UpperCamelCase	,							_UpperCamelCase	,							_UpperCamelCase	,							_UpperCamelCase	,							_UpperCamelCase	,							_UpperCamelCase      )
												SCREAMING_SNAKE_CASE    			=       sb_chrf.corpus_score(_UpperCamelCase	,							_UpperCamelCase      )

												return {
												    "score": output.score,
												    "char_order": output.char_order,
												    "word_order": output.word_order,
												    "beta": output.beta,
												}





import collections
import os
from shutil import copyfile
from typing import Any, Dict, List, Optional, Tuple

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


_lowerCamelCase					:   Dict							=		logging.get_logger(__name__)

_lowerCamelCase					:   List[Any]							=		'''▁'''

_lowerCamelCase					:   Optional[int]							=		{'''vocab_file''': '''prophetnet.tokenizer'''}

_lowerCamelCase					:   str							=		{
    '''vocab_file''': {
        '''microsoft/xprophetnet-large-wiki100-cased''': (
            '''https://huggingface.co/microsoft/xprophetnet-large-wiki100-cased/resolve/main/prophetnet.tokenizer'''
        ),
    }
}

_lowerCamelCase					:   Optional[Any]							=		{
    '''microsoft/xprophetnet-large-wiki100-cased''': {'''do_lower_case''': False},
}

_lowerCamelCase					:   Optional[Any]							=		{
    '''microsoft/xprophetnet-large-wiki100-cased''': 5_12,
}





def 	__lowerCamelCase							(UpperCAmelCase__     :							Optional[Any]  ):
					SCREAMING_SNAKE_CASE    			=       collections.OrderedDict()
					with open(UpperCAmelCase__      , "r"      , encoding="utf-8"  ) as reader:
										SCREAMING_SNAKE_CASE    			=       reader.readlines()
					for index, token in enumerate(UpperCAmelCase__  ):
										SCREAMING_SNAKE_CASE    			=       token.rstrip("\n"  )
										SCREAMING_SNAKE_CASE    			=       index
					return vocab


class 						lowercase    (     a     ):
							lowercase__						:       Optional[int]								=							VOCAB_FILES_NAMES
							lowercase__						:       Optional[Any]								=							PRETRAINED_VOCAB_FILES_MAP
							lowercase__						:       Union[str, Any]								=							PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
							lowercase__						:       Any								=							["""input_ids""", """attention_mask"""]




							def __init__(						self   :					Optional[int]	,							_UpperCamelCase   :					List[str]	,							_UpperCamelCase   :					str="[SEP]"	,							_UpperCamelCase   :					str="[SEP]"	,							_UpperCamelCase   :					Dict="[SEP]"	,							_UpperCamelCase   :					Tuple="[UNK]"	,							_UpperCamelCase   :					Dict="[PAD]"	,							_UpperCamelCase   :					Any="[CLS]"	,							_UpperCamelCase   :					Optional[Any]="[MASK]"	,							_UpperCamelCase   :					Optional[Dict[str, Any]] = None	,							**_UpperCamelCase   :					Dict	,							)					->				None:



												'''simple docstring'''

												SCREAMING_SNAKE_CASE    			=       {} if sp_model_kwargs is None else sp_model_kwargs

												super().__init__(
												    bos_token=_UpperCamelCase	,							eos_token=_UpperCamelCase	,							sep_token=_UpperCamelCase	,							unk_token=_UpperCamelCase	,							pad_token=_UpperCamelCase	,							cls_token=_UpperCamelCase	,							mask_token=_UpperCamelCase	,							sp_model_kwargs=self.sp_model_kwargs	,							**_UpperCamelCase	,							)

												try:
																	import sentencepiece as spm
												except ImportError:
																	logger.warning(
																	    "You need to install SentencePiece to use XLMRobertaTokenizer: https://github.com/google/sentencepiece"
																	    " pip install sentencepiece"      )
																	raise

												SCREAMING_SNAKE_CASE    			=       spm.SentencePieceProcessor(**self.sp_model_kwargs      )
												self.sp_model.Load(str(_UpperCamelCase      )      )
												SCREAMING_SNAKE_CASE    			=       vocab_file

												# Original fairseq vocab and spm vocab must be "aligned":
												# Vocab    |    0    |    1    |   2    |    3    |  4  |  5  |  6  |   7   |   8   |  9
												# -------- | ------- | ------- | ------ | ------- | --- | --- | --- | ----- | ----- | ----
												# fairseq  | '<s>'   | '<pad>' | '</s>' | '<unk>' | ',' | '.' | '▁' | 's'   | '▁de' | '-'
												# spm      | '<unk>' | '<s>'   | '</s>' | ','     | '.' | '▁' | 's' | '▁de' | '-'   | '▁a'

												# put special tokens and [unused] tokens into the vocab
												SCREAMING_SNAKE_CASE    			=       {"[PAD]": 0, "[CLS]": 1, "[SEP]": 2, "[UNK]": 3, "[MASK]": 4}

												for i in range(10      ):
																	SCREAMING_SNAKE_CASE    			=       F"[unused{i}]"
																	SCREAMING_SNAKE_CASE    			=       5 + i

												# The first "real" token "," has position 15 in the embedding vocab and position 3 in the spm vocab
												SCREAMING_SNAKE_CASE    			=       12
												SCREAMING_SNAKE_CASE    			=       {v: k for k, v in self.fairseq_tokens_to_ids.items()}
												for k in self.fairseq_tokens_to_ids.keys():
																	self.unique_no_split_tokens.append(_UpperCamelCase      )




							def __getstate__(						self   :					Dict      )					->				str:



												'''simple docstring'''

												SCREAMING_SNAKE_CASE    			=       self.__dict__.copy()
												SCREAMING_SNAKE_CASE    			=       None
												return state




							def __setstate__(						self   :					List[Any]	,							_UpperCamelCase   :					Union[str, Any]      )					->				Dict:



												'''simple docstring'''

												SCREAMING_SNAKE_CASE    			=       d
												try:
																	import sentencepiece as spm
												except ImportError:
																	logger.warning(
																	    "You need to install SentencePiece to use XLMRobertaTokenizer: https://github.com/google/sentencepiece"
																	    " pip install sentencepiece"      )
																	raise

												# for backward compatibility
												if not hasattr(self	,							"sp_model_kwargs"      ):
																	SCREAMING_SNAKE_CASE    			=       {}

												SCREAMING_SNAKE_CASE    			=       spm.SentencePieceProcessor(**self.sp_model_kwargs      )
												self.sp_model.Load(self.vocab_file      )




							def 	__snake_case(						self   :					Dict	,							_UpperCamelCase   :					List[int]	,							_UpperCamelCase   :					Optional[List[int]] = None	,							_UpperCamelCase   :					bool = False      )					->				List[int]:



												'''simple docstring'''

												if already_has_special_tokens:
																	return super().get_special_tokens_mask(
																	    token_ids_a=_UpperCamelCase	,							token_ids_a=_UpperCamelCase	,							already_has_special_tokens=_UpperCamelCase      )

												if token_ids_a is None:
																	return ([0] * len(_UpperCamelCase      )) + [1]
												return ([0] * len(_UpperCamelCase      )) + [1] + ([0] * len(_UpperCamelCase      )) + [1]




							def 	__snake_case(						self   :					str	,							_UpperCamelCase   :					List[int]	,							_UpperCamelCase   :					Optional[List[int]] = None      )					->				List[int]:



												'''simple docstring'''

												SCREAMING_SNAKE_CASE    			=       [self.sep_token_id]

												if token_ids_a is None:
																	return len(token_ids_a + sep      ) * [0]
												return len(token_ids_a + sep + sep + token_ids_a + sep      ) * [0]




							@property
							def 	__snake_case(						self   :					Dict      )					->				Optional[Any]:



												'''simple docstring'''

												return len(self.sp_model      ) + self.fairseq_offset




							def 	__snake_case(						self   :					Optional[Any]      )					->				Union[str, Any]:



												'''simple docstring'''

												SCREAMING_SNAKE_CASE    			=       {self.convert_ids_to_tokens(_UpperCamelCase      ): i for i in range(self.vocab_size      )}
												vocab.update(self.added_tokens_encoder      )
												return vocab




							def 	__snake_case(						self   :					Union[str, Any]	,							_UpperCamelCase   :					str      )					->				str:



												'''simple docstring'''

												return self.sp_model.encode(_UpperCamelCase	,							out_type=_UpperCamelCase      )




							def 	__snake_case(						self   :					Optional[Any]	,							_UpperCamelCase   :					List[Any]      )					->				List[str]:



												'''simple docstring'''

												if token in self.fairseq_tokens_to_ids:
																	return self.fairseq_tokens_to_ids[token]
												SCREAMING_SNAKE_CASE    			=       self.sp_model.PieceToId(_UpperCamelCase      )

												# Need to return unknown token if the SP model returned 0
												return spm_id + self.fairseq_offset if spm_id else self.unk_token_id




							def 	__snake_case(						self   :					str	,							_UpperCamelCase   :					str      )					->				int:



												'''simple docstring'''

												if index in self.fairseq_ids_to_tokens:
																	return self.fairseq_ids_to_tokens[index]
												return self.sp_model.IdToPiece(index - self.fairseq_offset      )




							def 	__snake_case(						self   :					List[str]	,							_UpperCamelCase   :					Dict      )					->				Optional[Any]:



												'''simple docstring'''

												SCREAMING_SNAKE_CASE    			=       "".join(_UpperCamelCase      ).replace(_UpperCamelCase	,							" "      ).strip()
												return out_string




							def 	__snake_case(						self   :					Optional[Any]	,							_UpperCamelCase   :					str	,							_UpperCamelCase   :					Optional[str] = None      )					->				Tuple[str]:



												'''simple docstring'''

												if not os.path.isdir(_UpperCamelCase      ):
																	logger.error(F"Vocabulary path ({save_directory}) should be a directory"      )
																	return
												SCREAMING_SNAKE_CASE    			=       os.path.join(
												    _UpperCamelCase	,							(filename_prefix + "-" if filename_prefix else "") + VOCAB_FILES_NAMES["vocab_file"]      )

												if os.path.abspath(self.vocab_file      ) != os.path.abspath(_UpperCamelCase      ) and os.path.isfile(self.vocab_file      ):
																	copyfile(self.vocab_file	,							_UpperCamelCase      )
												elif not os.path.isfile(self.vocab_file      ):
																	with open(_UpperCamelCase	,							"wb"      ) as fi:
																						SCREAMING_SNAKE_CASE    			=       self.sp_model.serialized_model_proto()
																						fi.write(_UpperCamelCase      )

												return (out_vocab_file,)





							def 	__snake_case(						self   :					Optional[Any]	,							_UpperCamelCase   :					List[int]	,							_UpperCamelCase   :					Optional[List[int]] = None      )					->				List[int]:



												'''simple docstring'''

												if token_ids_a is None:
																	return token_ids_a + [self.sep_token_id]
												SCREAMING_SNAKE_CASE    			=       [self.sep_token_id]
												return token_ids_a + sep + token_ids_a + sep




