[Python-Dev] RE: [Python-Div] A Hygienic Macro System in Python? (original) (raw)

Barry Scott barry@barrys-emacs.org
Wed, 3 Apr 2002 12:03:44 +0100

-----Original Message----- From: Barry Scott [mailto:barry.alan.scott@ntlworld.com] Sent: 02 April 2002 19:34 To: martin@v.loewis.de; barry@barrys-emacs.org Subject: RE: [Python-Div] A Hygienic Macro System in Python?

The problem is linking. I cannot link against python21.dll as it will not be on all target systems. Now I can use DELAYLOAD to get at functions in macros. But DELAYLOAD is disabled if a variable in a DLL is referenced, hence the _CHECK problem, also some things like Py_None, Py_True and Py_False cannot be used for the same reason.

    BArry

-----Original Message----- From: martin@v.loewis.de [mailto:martin@v.loewis.de] Sent: 02 April 2002 06:54 To: barry@barrys-emacs.org Subject: Re: [Python-Dev] A Hygienic Macro System in Python?

"Barry Scott" <barry.alan.scott@ntlworld.com> writes:

Consider: my code attempts to load pythonXX.dll then if it is present I find all the procedures that I need. I cannot use MACROS with implicit references to functions, it will prevent me linking my app.

All the Check macros cannot be used. I would like a C function.

Thanks, this is all I wanted to know. It is the _Check macros, and INCREF, DECREF you are after. Thanks for clarifying.

I still don't understand the problem, though. For CXX, you do use the preprocessor, right? So why can't it just expand these macros?

Furthermore, you say that you cannot use macros with implicit references to functions. Neither the _Check macros, nor INCREF/DECREF have implicit references to functions...

Regards, Martin