JRuby IRubyObject Adapter: JRubyObject

import static org.jruby.javasupport.JavaEmbedUtils.invokeMethod;

import org.jruby.Ruby;
import org.jruby.runtime.builtin.IRubyObject;

public class JRubyObject {

    public static JRubyObject load(Ruby runtime, String dump) {
        return new JRubyObject(((IRubyObject) marshalClass(runtime).send("load", dump)));
    }

    private static JRubyObject marshalClass(Ruby runtime) {
        return new JRubyObject(runtime.evalScriptlet("Marshal"));
    }

    private final IRubyObject obj;

    public JRubyObject(IRubyObject obj) {
        this.obj = obj;
    }

    @SuppressWarnings("unchecked")
    public <T> T send(String method, Object... args) {
        Object[] nonAdapterArgs = new Object[args.length];
        for (int i = 0; i < args.length; i++) {
            nonAdapterArgs[i] = getRidOfAdapter(args[i]);
        }
        return (T) invokeMethod(obj.getRuntime(), obj, method, nonAdapterArgs, Object.class);
    }

    @Override
    public String toString() {
        return this.obj.toString();
    }

    private Object getRidOfAdapter(Object object) {
        if (object instanceof JRubyObject) {
            return ((JRubyObject) object).obj;
        }
        return object;
    }

    public String dump() {
        return marshalClass(obj.getRuntime()).send("dump", obj);
    }
}