1*bd70d2d1SLoGin use intertrait::cast::*; 2*bd70d2d1SLoGin use intertrait::*; 3*bd70d2d1SLoGin use std::sync::Arc; 4*bd70d2d1SLoGin 5*bd70d2d1SLoGin #[cast_to([sync, send] Greet)] 6*bd70d2d1SLoGin struct Data; 7*bd70d2d1SLoGin 8*bd70d2d1SLoGin trait Source: CastFromSync {} 9*bd70d2d1SLoGin 10*bd70d2d1SLoGin trait Greet { greet(&self)11*bd70d2d1SLoGin fn greet(&self); 12*bd70d2d1SLoGin } 13*bd70d2d1SLoGin 14*bd70d2d1SLoGin impl Greet for Data { greet(&self)15*bd70d2d1SLoGin fn greet(&self) { 16*bd70d2d1SLoGin println!("Hello"); 17*bd70d2d1SLoGin } 18*bd70d2d1SLoGin } 19*bd70d2d1SLoGin 20*bd70d2d1SLoGin impl Source for Data {} 21*bd70d2d1SLoGin main()22*bd70d2d1SLoGinfn main() { 23*bd70d2d1SLoGin let data = Arc::new(Data); 24*bd70d2d1SLoGin let source: Arc<dyn Source> = data; 25*bd70d2d1SLoGin let greet = source.cast::<dyn Greet>(); 26*bd70d2d1SLoGin greet.unwrap_or_else(|_| panic!("can't happen")).greet(); 27*bd70d2d1SLoGin } 28