D and reflection

[Paulo Pinto via Digitalmars-d]

Am 07.05.2014 18:51, schrieb amehat:
> Hello everyone,
>
> I'm working on porting a java library in D, and I stuck on a class
> because it works with the reflection.
>
>  From what I've read on prowiki
> (http://www.prowiki.org/wiki4d/wiki.cgi?LanguagesVersusD), D can not do
> reflection, it is limited to the Run-Time Type Information (RTTI )
> (http://dlang.org/traits.html).
>
> Here is the piece of code that blocks me:
>
> static {
>          Class clazz = this.class;
>
>          auto accessible2Args = new Callback(clazz, "accessibleProc", 2);
>          auto proc2Args = accessible2Args.getAddress();
>          if (proc2Args === 0) {
>          (...)
>      }
> (...)
> }
>
> I am looking for a workaround that I have not found yet.
> If someone an idea on the subject, I'm interested.
>
> Thank you to you.

D can do reflection, but only at compile time.

If you can use the class name directly, a possibility might be something 
like:

import std.traits;
import std.stdio;

class test
{
	void accessibleProc () {}
}

void main ()
{
	auto t = new test();
	alias MemberFunctionsTuple!(test, "accessibleProc") accessible2Args;
     if (accessible2Args.length == 1)
	{
		// accessibleProc address in accessible2Args[0]
	}
}

If not, it is better if someone with more experience can step in.

--
Paulo