imag/libimagentryview/src/error.rs

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1.5 KiB
Rust
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2016-04-18 17:51:51 +00:00
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 ViewErrorKind {
}
fn counter_error_type_as_str(e: &ViewErrorKind) -> &'static str {
match e {
_ => "",
}
}
impl Display for ViewErrorKind {
fn fmt(&self, fmt: &mut Formatter) -> Result<(), FmtError> {
try!(write!(fmt, "{}", counter_error_type_as_str(self)));
Ok(())
}
}
/**
* Store error type
*/
#[derive(Debug)]
pub struct ViewError {
err_type: ViewErrorKind,
cause: Option<Box<Error>>,
}
impl ViewError {
/**
* Build a new ViewError from an ViewErrorKind, optionally with cause
*/
pub fn new(errtype: ViewErrorKind, cause: Option<Box<Error>>)
-> ViewError
{
ViewError {
err_type: errtype,
cause: cause,
}
}
/**
* Get the error type of this ViewError
*/
pub fn err_type(&self) -> ViewErrorKind {
self.err_type.clone()
}
}
impl Display for ViewError {
fn fmt(&self, fmt: &mut Formatter) -> Result<(), FmtError> {
try!(write!(fmt, "[{}]", counter_error_type_as_str(&self.err_type.clone())));
Ok(())
}
}
impl Error for ViewError {
fn description(&self) -> &str {
counter_error_type_as_str(&self.err_type.clone())
}
fn cause(&self) -> Option<&Error> {
self.cause.as_ref().map(|e| &**e)
}
}