[Python-Dev] [Python-checkins] peps: New DSL syntax and slightly changed semantics for the Argument Clinic DSL. (original) (raw)

Stefan Krah stefan at bytereef.org
Mon Mar 18 11:13:11 CET 2013

Larry Hastings <larry at hastings.org> wrote:

So I hope that at least converters can be declared statically in a header file, like I suggested in PEP 437.

The Argument Clinic prototype is written in Python; I don't know how "declared static in a header file" applies to a Python implementation. Currently the converters are declared directly in clinic.py, somewhere in the middle.

It applies in the same way to a Python implementation as declaring the DSL comment blocks in a C file applies to a Python implementation. This is exactly the same.

  1. I think that third party tools should be able to extract all required information from the DSL only.

  2. After writing a new custom converter, I'd rather edit a header file and not the preprocessor source.

  3. Likewise, I'd rather edit a header file than inserting a magic [python] block into the C source that registers the required information with the preprocessor in a completely implementation defined way.

The example in posixmodule.c takes up a lot of space and from the perspective of auditing the effects it's a little like following a longjmp.

I got strong feedback that I needed more examples. That was the logical place for them. Can you suggest a better spot, or spots?

I'm concerned about the whole concept (see above).

Stefan Krah

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