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// Copyright (C) Parity Technologies (UK) Ltd.
// This file is part of Polkadot.
// Polkadot 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.
// Polkadot 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 Polkadot. If not, see <http://www.gnu.org/licenses/>.
//! The statement table.
//!
//! This stores messages other authorities issue about candidates.
//!
//! These messages are used to create a proposal submitted to a BFT consensus process.
//!
//! Proposals are formed of sets of candidates which have the requisite number of
//! validity and availability votes.
//!
//! Each parachain is associated with two sets of authorities: those which can
//! propose and attest to validity of candidates, and those who can only attest
//! to availability.
pub mod generic;
pub use generic::{Context, Table};
/// Concrete instantiations suitable for v2 primitives.
pub mod v2 {
use crate::generic;
use polkadot_primitives::{
vstaging::CommittedCandidateReceiptV2 as CommittedCandidateReceipt, CandidateHash,
CompactStatement as PrimitiveStatement, CoreIndex, ValidatorIndex, ValidatorSignature,
};
/// Statements about candidates on the network.
pub type Statement = generic::Statement<CommittedCandidateReceipt, CandidateHash>;
/// Signed statements about candidates.
pub type SignedStatement = generic::SignedStatement<
CommittedCandidateReceipt,
CandidateHash,
ValidatorIndex,
ValidatorSignature,
>;
/// Kinds of misbehavior, along with proof.
pub type Misbehavior = generic::Misbehavior<
CommittedCandidateReceipt,
CandidateHash,
ValidatorIndex,
ValidatorSignature,
>;
/// A summary of import of a statement.
pub type Summary = generic::Summary<CandidateHash, CoreIndex>;
impl<'a> From<&'a Statement> for PrimitiveStatement {
fn from(s: &'a Statement) -> PrimitiveStatement {
match *s {
generic::Statement::Valid(s) => PrimitiveStatement::Valid(s),
generic::Statement::Seconded(ref s) => PrimitiveStatement::Seconded(s.hash()),
}
}
}
}