Compile time parsing

It would be really cool if you could parse a config file at compile time and get autocompletion directly from the json file. It's possible to do this using macros.

See this: http://blog.stroep.nl/2014/01/haxe-macros/
And this: http://nadako.tumblr.com/post/77106860013/using-haxe-macros-as-syntax-tolerant-position-aware
