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From: carl@nlr.nl (Carl G.M. Welman)
Subject: Re: __FILE__ and __LINE__
Date: 1997/04/08
Message-ID: <5id07f$3ap@nlrgup.nlr.nl>#1/1
X-Deja-AN: 231502206
References: <5ia77f$go3@nlrgup.nlr.nl> <dewar.860416526@merv>
Organization: The National Aerospace Laboratory NLR
Newsgroups: comp.lang.ada
Date: 1997-04-08T00:00:00+00:00
List-Id: <comp.lang.ada>


Robert Dewar wrote:
> ...
> It would be easy to implement an attribute (not a pragma, I don't see
> how a pragma would work) that would provide this information, e.g.
>     Standard'Line
>     Standard'File
> (applying attributes to Standard in such a case is an existing trick
> in GNAT for defining new attributes)
> ...

    You're right. Attributes are preferred (also from a user's point of
view). I've thought about Attributes for this job, but I couldn't find
appropriate Attributes. Furhermore, I couldn't figure out where they
should be Attributes of.

    I suppose that a small Ada preprocessor can also do the job. In
this case, other macros like __DATE__ and __TIME__ can also be
expanded. (There is no need to do this for the __STDC__ macro.)

Regards, Carl.