imag/libimaginteraction/src/error.rs
2016-04-12 16:40:25 +02:00

78 lines
1.6 KiB
Rust

use std::error::Error;
use std::fmt::Error as FmtError;
use std::clone::Clone;
use std::fmt::{Display, Formatter};
/**
* Kind of error
*/
#[derive(Clone, Copy, Debug, PartialEq)]
pub enum InteractionErrorKind {
Unknown
}
fn interaction_error_type_as_str(e: &InteractionErrorKind) -> &'static str {
match e {
&InteractionErrorKind::Unknown => "Unknown Error",
}
}
impl Display for InteractionErrorKind {
fn fmt(&self, fmt: &mut Formatter) -> Result<(), FmtError> {
try!(write!(fmt, "{}", interaction_error_type_as_str(self)));
Ok(())
}
}
#[derive(Debug)]
pub struct InteractionError {
err_type: InteractionErrorKind,
cause: Option<Box<Error>>,
}
impl InteractionError {
/**
* Build a new InteractionError from an InteractionErrorKind, optionally with cause
*/
pub fn new(errtype: InteractionErrorKind, cause: Option<Box<Error>>)
-> InteractionError
{
InteractionError {
err_type: errtype,
cause: cause,
}
}
/**
* Get the error type of this InteractionError
*/
pub fn err_type(&self) -> InteractionErrorKind {
self.err_type.clone()
}
}
impl Display for InteractionError {
fn fmt(&self, fmt: &mut Formatter) -> Result<(), FmtError> {
try!(write!(fmt, "[{}]", interaction_error_type_as_str(&self.err_type.clone())));
Ok(())
}
}
impl Error for InteractionError {
fn description(&self) -> &str {
interaction_error_type_as_str(&self.err_type.clone())
}
fn cause(&self) -> Option<&Error> {
self.cause.as_ref().map(|e| &**e)
}
}