gh-125196: Use PyUnicodeWriter in parser#125271
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Replace the private _PyUnicodeWriter API with the public PyUnicodeWriter API in _PyPegen_concatenate_strings().
vstinner commented Oct 10, 2024
| PyObject*concat_str=_PyUnicodeWriter_Finish(&writer); | ||
| PyObject*concat_str=PyUnicodeWriter_Finish(writer); | ||
| if (concat_str==NULL){ | ||
| _PyUnicodeWriter_Dealloc(&writer); |
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The writer must not be used after _PyUnicodeWriter_Finish().
| PyObject*kind=elem->v.Constant.kind; | ||
| _PyUnicodeWriter_Init(&writer); | ||
| PyUnicodeWriter*writer=PyUnicodeWriter_Create(0); |
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IIRC that's the number of pre-allocated characters. If you know that you will need N characters, I think it's better to put N in advance so that you don't have to resize the buffer. Otherwise, 0 is a good choice if you don't know in advance how many characters you'll eventually need (at the cost of resizes).
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vstinner commented Oct 12, 2024
Merged, thanks for the review @pablogsal. |
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Replace the private _PyUnicodeWriter API with the public PyUnicodeWriter API in _PyPegen_concatenate_strings().