openethereum/ethstore/src/error.rs

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// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.
// Parity 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.
// Parity 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 Parity. If not, see <http://www.gnu.org/licenses/>.
use std::fmt;
use std::io::Error as IoError;
use ethkey::Error as EthKeyError;
use crypto::Error as EthCryptoError;
#[derive(Debug)]
pub enum Error {
Io(IoError),
InvalidPassword,
InvalidSecret,
InvalidAccount,
InvalidMessage,
InvalidKeyFile(String),
CreationFailed,
EthKey(EthKeyError),
EthCrypto(EthCryptoError),
Custom(String),
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
let s = match *self {
Error::Io(ref err) => err.to_string(),
Error::InvalidPassword => "Invalid password".into(),
Error::InvalidSecret => "Invalid secret".into(),
Error::InvalidAccount => "Invalid account".into(),
Error::InvalidMessage => "Invalid message".into(),
Error::InvalidKeyFile(ref reason) => format!("Invalid key file: {}", reason),
Error::CreationFailed => "Account creation failed".into(),
Error::EthKey(ref err) => err.to_string(),
Error::EthCrypto(ref err) => err.to_string(),
Error::Custom(ref s) => s.clone(),
};
write!(f, "{}", s)
}
}
impl From<IoError> for Error {
fn from(err: IoError) -> Self {
Error::Io(err)
}
}
impl From<EthKeyError> for Error {
fn from(err: EthKeyError) -> Self {
Error::EthKey(err)
}
}
impl From<EthCryptoError> for Error {
fn from(err: EthCryptoError) -> Self {
Error::EthCrypto(err)
}
}