[issue44214] PyArg_Parse* for vectorcall?

[Serhiy Storchaka]

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

There are alternative ideas of parsing API which should be considered:

1. Linearize keyword arguments using _PyArg_UnpackKeywords() and parse the linear array of arguments with a variant of _PyArg_ParseStack().

2. Parse arguments outside of the user function and pass already parsed values (as in Argument Clinic). Or just pre-process keyword arguments and pass a continuous array of arguments with possible NULLs for optional parameters. Specification for parsing arguments should be added to PyMethodDef.

I do not know what idea will work better, it needs experimentation.

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<https://bugs.python.org/issue44214>
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