Re: C Macros and their equivalent in Ada

[Keith Thompson <kst-u@mib.org>]

Maciej Sobczak <see.my.homepage@gmail.com> writes:
[...]
> The other extremely useful macros from the C world are __FILE__ and
> __LINE__. I'm afraid there is no way to simulate them using any
> external solutions, short of using the real preprocessor (why not?).
>
> Yeah - why not use the cpp preprocessor?
[...]

The cpp preprocessor is designed to be used with C and C++.

For example, the apostrophe character in C, if it appears outside a
string literal, is used only as a delimiter for a character constant.
If you have a single apostrophe on a line because you're using an Ada
qualified expression or attribute, or even in an Ada comment (the
leading -- will be treated as an operator symbol), then cpp is likely
to complain or even terminate.

One implementation I just tried issued a warning message and continued
processing, but that's not guaranteed.

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Nokia
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"