71 lines
2.4 KiB
Rust
71 lines
2.4 KiB
Rust
// Copyright 2015-2018 Parity Technologies (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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use std::{error, fmt, result};
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/// Transaction Pool Error
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#[derive(Debug)]
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pub enum Error<Hash: fmt::Debug + fmt::LowerHex> {
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/// Transaction is already imported
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AlreadyImported(Hash),
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/// Transaction is too cheap to enter the queue
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TooCheapToEnter(Hash, String),
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/// Transaction is too cheap to replace existing transaction that occupies the same slot.
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TooCheapToReplace(Hash, Hash),
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}
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/// Transaction Pool Result
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pub type Result<T, H> = result::Result<T, Error<H>>;
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impl<H: fmt::Debug + fmt::LowerHex> fmt::Display for Error<H> {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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match self {
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Error::AlreadyImported(h) => write!(f, "[{:?}] already imported", h),
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Error::TooCheapToEnter(hash, min_score) => write!(
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f,
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"[{:x}] too cheap to enter the pool. Min score: {}",
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hash, min_score
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),
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Error::TooCheapToReplace(old_hash, hash) => {
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write!(f, "[{:x}] too cheap to replace: {:x}", hash, old_hash)
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}
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}
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}
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}
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impl<H: fmt::Debug + fmt::LowerHex> error::Error for Error<H> {}
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#[cfg(test)]
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impl<H: fmt::Debug + fmt::LowerHex> PartialEq for Error<H>
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where
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H: PartialEq,
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{
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fn eq(&self, other: &Self) -> bool {
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use self::Error::*;
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match (self, other) {
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(&AlreadyImported(ref h1), &AlreadyImported(ref h2)) => h1 == h2,
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(&TooCheapToEnter(ref h1, ref s1), &TooCheapToEnter(ref h2, ref s2)) => {
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h1 == h2 && s1 == s2
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}
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(&TooCheapToReplace(ref old1, ref new1), &TooCheapToReplace(ref old2, ref new2)) => {
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old1 == old2 && new1 == new2
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}
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_ => false,
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}
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}
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}
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