[Experimental] Add GPTNeoXTokenizer support to HFTokenizerConverter #678
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…erter This commit updates `HFTokenizerConverter` to handle cases where the `hf_tokenizer` object might not have a `vocab_file` attribute. Changes: * Uses `getattr` to retrieve the `vocab_file` attribute for flexibility * Stores the retrieved value in a separate variable `vocab_file` for clarity * Checks if `vocab_file` is `None` before checking its existence This ensures the converter works correctly even with tokenizers that don't define a `vocab_file` attribute.
This commit adds support for the `GPTNeoXTokenizer` class from Hugging Face Transformers to the `HFTokenizerConverter` in the `onnxruntime_extensions` library. Specifically, it includes a new entry in the `_PROCESSOR_DICT` dictionary for `GPTNeoXTokenizer`, referencing the existing `HFTokenizerConverter.bpe_tokenizer` and `HFTokenizerConverter.bpe_decoder` functions for handling tokenization and decoding. This allows seamless integration of GPTNeoX models with ONNX Runtime through the `HFTokenizerConverter`.
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This pull request adds experimental GPTNeoXTokenizer support.