1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
use std::error::Error; use std::fmt; pub type Result<T> = ::std::result::Result<T, SpriteError>; /// The enum `SpriteError` defines the possible errors /// from constructor Sprite. #[derive(Clone, Copy, Debug)] pub enum SpriteError { } impl fmt::Display for SpriteError { /// The function `fmt` formats the value using /// the given formatter. fn fmt(&self, _: &mut fmt::Formatter) -> fmt::Result { Ok(()) } } impl Error for SpriteError { /// The function `description` returns a short description of /// the error. fn description(&self) -> &str { match *self { } } /// The function `cause` returns the lower-level cause of /// this error if any. fn cause(&self) -> Option<&Error> { None } }