AST macros
Walter Bright
newshound at digitalmars.com
Sat Mar 17 19:00:34 PDT 2007
> As I can see the content of macro body will be inserted into AST in the
> place of invocation. But there is not much differences with existing
> C/C++ macro handling (insertion of right __FILE__, __LINE__ is good
> thing anyway).
>
> Is there allowed any access to previous parsed entity? For example, can
> I define macro:
>
> macro some_class_extender(class_name) {
> ...modification of 'class_name' class structure...
> }
>
> class MyCoolClass { ... }
> some_class_extender( MyCoolClass );
>
> and get the modified version of MyCoolClass after some_class_externder
> invocation?
>
> --Regards,
> Yauheni Akhotnikau
Right now, I see AST macros as manipulating expressions and statements,
not declarations.
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