On Saturday, 16 April 2016 at 13:04:24 UTC, Nordlöw wrote:
On Friday, 15 April 2016 at 13:18:46 UTC, Nordlöw wrote:
Why does the build system Reggae use mixins everywhere in the
D examples?
https://github.com/atilaneves/reggae
Correction, it can do stuff either at CT or run-time as show
here:
https://github.com/atilaneves/reggae/blob/master/doc/basics.md
Could somebody highlight when either is adviced?
Mixins are used so a D build description can be written at
module-scope, thereby looking like a scripting language. The only
reason this is important is to enable builds that have run-time
logic, which is pretty much all of the high-level rules (since
they have to read the file system).
the build template mixin doesn't have to be used, the only thing
reggae wants from a build description written in D is that there
be one and exactly one function with the signature:
Build func();
That's the function that gets called to generate the build. Since
I'm lazy I created a template mixin to write the function for me,
which again means that all definitions can be at module-scope.
Basically it's so that the file looks like:
alias exe = executable!(...);
mixin build!(exe);
Instead of:
Build myBuild() {
auto exe = executable(...);
return Build(exe);
}
Atila
