Files
pezkuwi-subxt/substrate/client/consensus/uncles/src/lib.rs
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Bastian Köcher 7b56ab15b4 Run cargo fmt on the whole code base (#9394)
* Run cargo fmt on the whole code base

* Second run

* Add CI check

* Fix compilation

* More unnecessary braces

* Handle weights

* Use --all

* Use correct attributes...

* Fix UI tests

* AHHHHHHHHH

* 🤦

* Docs

* Fix compilation

* 🤷

* Please stop

* 🤦 x 2

* More

* make rustfmt.toml consistent with polkadot

Co-authored-by: André Silva <andrerfosilva@gmail.com>
2021-07-21 14:32:32 +00:00

46 lines
1.6 KiB
Rust

// This file is part of Substrate.
// Copyright (C) 2019-2021 Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
// This program 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.
// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
//! Uncles functionality for Substrate.
use sc_client_api::ProvideUncles;
use sp_runtime::{generic::BlockId, traits::Block as BlockT};
#[derive(Debug, thiserror::Error)]
pub enum Error<B: BlockT> {
#[error("Could not retrieve the block hash for block id: {0:?}")]
NoHashForBlockId(BlockId<B>),
}
/// Maximum uncles generations we may provide to the runtime.
const MAX_UNCLE_GENERATIONS: u32 = 8;
/// Create a new [`sp_authorship::InherentDataProvider`] at the given block.
pub fn create_uncles_inherent_data_provider<B, C>(
client: &C,
parent: B::Hash,
) -> Result<sp_authorship::InherentDataProvider<B::Header>, sc_client_api::blockchain::Error>
where
B: BlockT,
C: ProvideUncles<B>,
{
let uncles = client.uncles(parent, MAX_UNCLE_GENERATIONS.into())?;
Ok(sp_authorship::InherentDataProvider::new(uncles))
}