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pezkuwi-subxt/substrate/primitives/trie/src/error.rs
T
Guillaume Thiolliere f48296e9ad Update parity-scale-codec to 2.0 (#7994)
* update cargo.toml

* use 2.0 in mmmr
2021-01-29 12:22:45 +00:00

57 lines
1.4 KiB
Rust

// This file is part of Substrate.
// Copyright (C) 2015-2021 Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#[cfg(feature="std")]
use std::fmt;
#[cfg(feature="std")]
use std::error::Error as StdError;
#[derive(Debug, PartialEq, Eq, Clone)]
/// Error for trie node decoding.
pub enum Error {
/// Bad format.
BadFormat,
/// Decoding error.
Decode(codec::Error)
}
impl From<codec::Error> for Error {
fn from(x: codec::Error) -> Self {
Error::Decode(x)
}
}
#[cfg(feature="std")]
impl StdError for Error {
fn description(&self) -> &str {
match self {
Error::BadFormat => "Bad format error",
Error::Decode(_) => "Decoding error",
}
}
}
#[cfg(feature="std")]
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
Error::Decode(e) => write!(f, "Decode error: {}", e),
Error::BadFormat => write!(f, "Bad format"),
}
}
}