> On Jun 20, 2018, at 9:16 PM, Mark Morgan Lloyd
> <markmll.fpc-pas...@telemetry.co.uk> wrote:
>
>> How can you integrate a preprocessor without misaligning error messages and
>> debugging information?
>
> I forget the detail but some language implementations have pragmata which
> tell subsequent processing steps that at this point the source should be
> considered to have come from such-and-such a line number in such-and-such a
> file.
I think you’re right but that’s internal to the compiler and not really
something we can replicate ourselves. In fact that’s what the $include
directive does right? Again correct me if I’m wrong but I think $define:= does
the same thing otherwise column numbers (at least) in error messages would be
misaligned.
If macros took parameters it’s the same as before it just includes some extra
text. I keep saying it but it’s really difficult to understand why this is
compiler breaking stuff.
{$define foo(xx) := DoFoo(xx)}
Regards,
Ryan Joseph
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