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use std::error::Error as StdError;
use std::fmt;
#[derive(Debug)]
pub enum Error {
MenusNotSupported,
MenuExists(String),
WindowCreate(String),
}
impl StdError for Error {
fn description(&self) -> &str {
match *self {
Error::MenusNotSupported => "Menus not supported",
Error::MenuExists(_) => "Menu already exists",
Error::WindowCreate(_) => "Failed to create Window",
}
}
fn cause(&self) -> Option<&StdError> {
match *self {
Error::MenusNotSupported => None,
Error::MenuExists(_) => None,
Error::WindowCreate(_) => None,
}
}
}
impl fmt::Display for Error {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
match *self {
Error::MenusNotSupported => {
write!(fmt, "{}", self.description())
},
Error::MenuExists(ref e) => {
write!(fmt, "{} {:?}", self.description(), e)
},
Error::WindowCreate(ref e) => {
write!(fmt, "{} {:?}", self.description(), e)
}
}
}
}