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- # Copyright 2018 The HuggingFace Inc. team.
- #
- # Licensed under the Apache License, Version 2.0 (the "License");
- # you may not use this file except in compliance with the License.
- # You may obtain a copy of the License at
- #
- # http://www.apache.org/licenses/LICENSE-2.0
- #
- # Unless required by applicable law or agreed to in writing, software
- # distributed under the License is distributed on an "AS IS" BASIS,
- # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- # See the License for the specific language governing permissions and
- # limitations under the License.
- """Tokenization classes for DistilBERT."""
- from ...models.bert.tokenization_bert import BertTokenizer
- VOCAB_FILES_NAMES = {"vocab_file": "vocab.txt", "tokenizer_file": "tokenizer.json"}
- class DistilBertTokenizer(BertTokenizer):
- model_input_names = ["input_ids", "attention_mask"]
- def __init__(self, *args, do_lower_case: bool = True, **kwargs):
- """
- Construct a DistilBERT tokenizer (backed by HuggingFace's tokenizers library). Based on WordPiece.
- This tokenizer inherits from [`BertTokenizer`] which contains most of the main methods. Users should refer to
- this superclass for more information regarding those methods.
- Args:
- do_lower_case (`bool`, *optional*, defaults to `True`):
- Whether or not to lowercase the input when tokenizing.
- """
- super().__init__(*args, do_lower_case=do_lower_case, **kwargs)
- # DistilBertTokenizerFast is an alias for DistilBertTokenizer (since BertTokenizer is already a fast tokenizer)
- DistilBertTokenizerFast = DistilBertTokenizer
- __all__ = ["DistilBertTokenizer", "DistilBertTokenizerFast"]
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