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/**
* @license
* Copyright Big Vision Authors
*
* 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.
*/
/**
* @fileoverview Tokenizers and tokenizer mappings.
*/
import {Tokenizer, TokenizerConstructor, Vocabulary} from './common';
import * as sentencepieceBpe from './sentencepiece_bpe';
import * as sentencepieceUnigram from './sentencepiece_unigram';
export {Tokenizer, Vocabulary} from './common';
const TOKENIZERS = new Map<string, TokenizerConstructor>([
['BPE', sentencepieceBpe.Tokenizer],
['UNIGRAM', sentencepieceUnigram.Tokenizer],
]);
/**
* Returns a tokenizer of type `name` using `vocabulary`.
*/
export const getTokenizer = (name: string, vocabulary: Vocabulary): Tokenizer => {
const ctor = TOKENIZERS.get(name);
if (!ctor) throw new Error(`Unknown tokenizer: ${name}`);
return new ctor(vocabulary);
};
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