openethereum/util/rlp/src/rlperrors.rs

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// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
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// 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/>.
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use std::fmt;
use std::error::Error as StdError;
use bytes::FromBytesError;
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#[derive(Debug, PartialEq, Eq)]
/// Error concerning the RLP decoder.
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pub enum DecoderError {
/// Couldn't convert given bytes to an instance of required type.
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FromBytesError(FromBytesError),
/// Data has additional bytes at the end of the valid RLP fragment.
RlpIsTooBig,
/// Data has too few bytes for valid RLP.
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RlpIsTooShort,
/// Expect an encoded list, RLP was something else.
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RlpExpectedToBeList,
/// Expect encoded data, RLP was something else.
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RlpExpectedToBeData,
/// Expected a different size list.
RlpIncorrectListLen,
/// Data length number has a prefixed zero byte, invalid for numbers.
RlpDataLenWithZeroPrefix,
/// List length number has a prefixed zero byte, invalid for numbers.
RlpListLenWithZeroPrefix,
/// Non-canonical (longer than necessary) representation used for data or list.
RlpInvalidIndirection,
/// Declared length is inconsistent with data specified after.
RlpInconsistentLengthAndData,
/// Custom rlp decoding error.
Custom(&'static str),
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}
impl StdError for DecoderError {
fn description(&self) -> &str {
"builder error"
}
}
impl fmt::Display for DecoderError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fmt::Debug::fmt(&self, f)
}
}
impl From<FromBytesError> for DecoderError {
fn from(err: FromBytesError) -> DecoderError {
DecoderError::FromBytesError(err)
}
}