HaxeDCI Greeting example - https://github.com/ciscoheat/haxedci

Main.hx

package ;

import neko.Lib;
import dci.Context;

/**
 * ...
 * @author 
 */

class Main 
{  
	static function main() 
	{
		new Greeting({name:"Anna"}, "Hello", {name:"World"}).greet();
	}	
}

typedef ISomeone = {
	name: String,	
};

typedef IMessage = String;

@:build(Dci.role(Greeting))
private abstract Someone(ISomeone)
{
	public function name()
	{		
		return this.name;
	}
}

@:build(Dci.role(Greeting))
private abstract Message(IMessage)
{}

class Greeting implements Context
{
	@role var sender: Someone;
	@role var message: Message;
	@role var recipient: Someone;
	
	public function new (sender:ISomeone, message:IMessage, recipient:ISomeone) 
	{
		this.sender = new Someone(sender);
		this.message = new Message(message);		
		this.recipient = new Someone(recipient);		
	}
	
	public function greet()
	{
		trace('${sender.name()} says: "$message, ${recipient.name()}!".');
	}	
}