Abstract syntax tree manipulation

[MrSmith]

On Friday, 24 January 2014 at 13:22:53 UTC, Jacob Carlborg wrote:
> On 2014-01-24 11:20, Tofu Ninja wrote:
>
>> This is amazing, its not 100% perfect but it hits all the main 
>> things I
>> want out of a macro system. How long ago did you come up with 
>> this?
>
> I don't know. Dropbox says the file was created 2013 in 
> February. I've created a DIP out of this:
>
> http://wiki.dlang.org/DIP50

Is this avaliable as some sort of preprocessor?
Looks really amazing!