Pre-SIP: Export Macros

[MateuszKowalewski]

@markehammons

current macros only produce expressions at the end of the day, meaning that any definitions you create are not visible outside of the Expr that contains them.

Which completely defeats the point.

Think auto-generated implementations of some IDL…

@markehammons

You can in fact do that with current macros, you just cannot have them visible outside of the Expr. However, since we would be using Expr.show to produce writeable files instead of splicing Expr into your code, that ends up not being a problem anymore.

This sounds interesting. So you could have something like “template expansion” at least as a separate (pre)build step.

This goes in the direction of what I’ve just added as an idea to my previous post.

If this wouldn’t require build setup but be a compiler feature we would be almost there I guess.