[issue44214] PyArg_Parse* for vectorcall?

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

There are no problems with exposing _PyArg_ParseStack(). Although I am arguing that it would be better to rename it to _PyArg_ParseArray.

But _PyArg_ParseStackAndKeywords() is more complicated. It uses a private structure _PyArg_Parser allocated on the stack. It was not important while it was private, but the layout of _PyArg_Parser cannot be changed after making it a public structure unless we add support for expanding supporting of future versions of the structure from initial. This requires attentive development of future design. Fortunately most of the functions and methods in CPython have already been converted to Argument Clinic, so it's easier now to experiment with designs by making Argument Clinic generating different code. Although this is still an amount of work.

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nosy: +serhiy.storchaka

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