w.emitf("var %s //deprecated", obj.Name())
		}
		w.emitf("var %s %s", obj.Name(), w.typeString(obj.Type()))
	case *types.TypeName:
		w.emitType(obj)
	case *types.Func:
		w.emitFunc(obj)
	default:
		panic("unknown object: " + obj.String())
	}
}

func (w *Walker) emitType(obj *types.TypeName) {
	name := obj.Name()
	if w.isDeprecated(obj) {
		w.emitf("type %s //deprecated", name)
	}
	typ := obj.Type()