utils.py

#
# SPDX-FileCopyrightText: Copyright (c) 1993-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
# SPDX-License-Identifier: Apache-2.0
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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
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#
# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
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from transformers import PreTrainedTokenizer


def text_to_token(tokenizer: PreTrainedTokenizer, text: str, last: bool):
    tokens = tokenizer.encode(text, add_special_tokens=False)

    if not last and len(tokens) > 2:
        # Usually the first token indicates the beginning, and the second token is our main token
        raise Exception(f"Can't convert {text} to token. It has {len(tokens)} tokens.")

    return tokens[-1]


def get_new_line_tokens(tokenizer):
    new_line_tokens = [token for token in tokenizer.get_vocab().values()
                       if tokenizer.decode(token).endswith("\n")]

    return set(new_line_tokens)