68 lines
1.8 KiB
Rust
68 lines
1.8 KiB
Rust
// Copyright 2015, 2016 Ethcore (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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//! Snapshot-related errors.
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use std::fmt;
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use util::H256;
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use util::trie::TrieError;
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use util::rlp::DecoderError;
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/// Snapshot-related errors.
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#[derive(Debug)]
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pub enum Error {
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/// Invalid starting block for snapshot.
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InvalidStartingBlock(H256),
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/// Block not found.
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BlockNotFound(H256),
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/// Trie error.
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Trie(TrieError),
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/// Decoder error.
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Decoder(DecoderError),
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/// Io error.
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Io(::std::io::Error),
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}
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impl fmt::Display for Error {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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match *self {
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Error::InvalidStartingBlock(ref hash) => write!(f, "Invalid starting block hash: {}", hash),
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Error::BlockNotFound(ref hash) => write!(f, "Block not found in chain: {}", hash),
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Error::Io(ref err) => err.fmt(f),
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Error::Decoder(ref err) => err.fmt(f),
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Error::Trie(ref err) => err.fmt(f),
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}
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}
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}
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impl From<::std::io::Error> for Error {
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fn from(err: ::std::io::Error) -> Self {
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Error::Io(err)
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}
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}
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impl From<Box<TrieError>> for Error {
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fn from(err: Box<TrieError>) -> Self {
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Error::Trie(*err)
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}
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}
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impl From<DecoderError> for Error {
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fn from(err: DecoderError) -> Self {
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Error::Decoder(err)
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}
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} |