meli/src/error.rs

71 lines
1.6 KiB
Rust

/*
* meli - error module
*
* Copyright 2017 Manos Pitsidianakis
*
* This file is part of meli.
*
* meli is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* meli is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with meli. If not, see <http://www.gnu.org/licenses/>.
*/
use std::error::Error;
use std::fmt;
use std::result;
use std::io;
use nom;
pub type Result<T> = result::Result<T, MeliError>;
#[derive(Debug, Clone)]
pub struct MeliError {
details: String,
}
impl MeliError {
pub fn new<M>(msg: M) -> MeliError
where
M: Into<String>,
{
MeliError {
details: msg.into(),
}
}
}
impl fmt::Display for MeliError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", self.details)
}
}
impl Error for MeliError {
fn description(&self) -> &str {
&self.details
}
}
impl From<io::Error> for MeliError {
#[inline]
fn from(kind: io::Error) -> MeliError {
MeliError::new(kind.description())
}
}
impl From<nom::IError> for MeliError {
#[inline]
fn from(kind: nom::IError) -> MeliError {
MeliError::new(format!("{:?}", kind))
}
}