Ceylon Express Typesafe Interface

run.ceylon

"Run the module `my.blog`."
shared void run() {
	
	Application app;
	
	app = Application();

	dynamic server = app.js.listen(3000, void () {
		dynamic {
			console.log(
				"Express is listening to http://localhost:3000"
			);
		}
	});
	
}

shared dynamic AppInterface {
	shared formal void listen(Integer port, Anything() callback);
}

shared class Application() {
	
	"Encapsulates express logic that works when not interfaced"
	dynamic dynRequire() {
		dynamic {
	 		dynamic required = require("express");
	 		//must call here; otherwise gets "type not callable" errors
	 		dynamic calledRequired = required();
	 		return calledRequired;
	 	}
	}
	
	"Should apply interface to javascript code"
	AppInterface dynInit() { 
		dynamic {
			return dynRequire(); 
		}
	}
	
	"Contains the actual js object."
	shared AppInterface js = dynInit();
}

OK there were a couple of issues with some of the core functions when dealing with a native function with additional stuff; I've just fixed that. And now I've just started a little express server with this:

dynamic Response {
  shared formal void send(String text);
}

dynamic ExpressApp {
  shared formal void listen(Integer port, Anything() callback=()=>null);
  shared formal void get(String url, Anything(Anything,Response) callback);
}

shared void run() {
  ExpressApp app;
  dynamic {
    app=require("express")();
  }
  print(app);
  app.get("/", (req,resp) {
    print("Responding...");
    return resp.send("YEAH!");
  });
  app.listen(3000,
    ()=>print("OK, listening on port 3000"));
}

Excellent! I'll pull ceylon-js later this afternoon then and give it a go!

Don't forget to pull ceylon.language as well, since the latest fixes were in native JS code.