121 lines
3.4 KiB
Rust
121 lines
3.4 KiB
Rust
// Copyright 2015-2020 Parity Technologies (UK) Ltd.
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// This file is part of OpenEthereum.
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// OpenEthereum 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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// OpenEthereum 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 OpenEthereum. If not, see <http://www.gnu.org/licenses/>.
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//! Spec seal.
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use ethereum_types::{H256, H520, H64};
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use ethjson;
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use rlp::RlpStream;
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/// Classic ethereum seal.
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pub struct Ethereum {
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/// Seal nonce.
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pub nonce: H64,
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/// Seal mix hash.
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pub mix_hash: H256,
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}
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impl Into<Generic> for Ethereum {
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fn into(self) -> Generic {
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let mut s = RlpStream::new_list(2);
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s.append(&self.mix_hash).append(&self.nonce);
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Generic(s.out())
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}
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}
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/// AuthorityRound seal.
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pub struct AuthorityRound {
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/// Seal step.
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pub step: usize,
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/// Seal signature.
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pub signature: H520,
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}
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/// Tendermint seal.
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pub struct Tendermint {
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/// Seal round.
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pub round: usize,
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/// Proposal seal signature.
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pub proposal: H520,
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/// Precommit seal signatures.
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pub precommits: Vec<H520>,
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}
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impl Into<Generic> for AuthorityRound {
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fn into(self) -> Generic {
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let mut s = RlpStream::new_list(2);
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s.append(&self.step).append(&self.signature);
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Generic(s.out())
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}
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}
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impl Into<Generic> for Tendermint {
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fn into(self) -> Generic {
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let mut stream = RlpStream::new_list(3);
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stream
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.append(&self.round)
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.append(&self.proposal)
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.append_list(&self.precommits);
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Generic(stream.out())
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}
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}
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pub struct Generic(pub Vec<u8>);
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/// Genesis seal type.
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pub enum Seal {
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/// Classic ethereum seal.
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Ethereum(Ethereum),
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/// AuthorityRound seal.
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AuthorityRound(AuthorityRound),
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/// Tendermint seal.
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Tendermint(Tendermint),
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/// Generic RLP seal.
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Generic(Generic),
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}
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impl From<ethjson::spec::Seal> for Seal {
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fn from(s: ethjson::spec::Seal) -> Self {
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match s {
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ethjson::spec::Seal::Ethereum(eth) => Seal::Ethereum(Ethereum {
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nonce: eth.nonce.into(),
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mix_hash: eth.mix_hash.into(),
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}),
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ethjson::spec::Seal::AuthorityRound(ar) => Seal::AuthorityRound(AuthorityRound {
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step: ar.step.into(),
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signature: ar.signature.into(),
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}),
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ethjson::spec::Seal::Tendermint(tender) => Seal::Tendermint(Tendermint {
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round: tender.round.into(),
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proposal: tender.proposal.into(),
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precommits: tender.precommits.into_iter().map(Into::into).collect(),
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}),
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ethjson::spec::Seal::Generic(g) => Seal::Generic(Generic(g.into())),
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}
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}
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}
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impl Into<Generic> for Seal {
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fn into(self) -> Generic {
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match self {
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Seal::Generic(generic) => generic,
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Seal::Ethereum(eth) => eth.into(),
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Seal::AuthorityRound(ar) => ar.into(),
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Seal::Tendermint(tender) => tender.into(),
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}
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}
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}
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