Files
pezkuwi-subxt/polkadot/runtime/common/src/impls.rs
T
Kian Paimani 3c9d72fb57 Companion for substrate/pull/6334 (#1263)
* fix all runtimes and add test'

* Fix build

* Undo changes to lock file?

* Fix runtime test

* Remove unused imports

* cargo update -p sp-io

* Update Cargo.lock

* bump spec version

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
2020-06-18 09:41:39 +02:00

74 lines
2.4 KiB
Rust

// Copyright 2019-2020 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/>.
//! Auxillary struct/enums for polkadot runtime.
use sp_runtime::traits::Convert;
use frame_support::traits::{OnUnbalanced, Imbalance, Currency};
use crate::NegativeImbalance;
/// Logic for the author to get a portion of fees.
pub struct ToAuthor<R>(sp_std::marker::PhantomData<R>);
impl<R> OnUnbalanced<NegativeImbalance<R>> for ToAuthor<R>
where
R: balances::Trait + authorship::Trait,
<R as system::Trait>::AccountId: From<primitives::AccountId>,
<R as system::Trait>::AccountId: Into<primitives::AccountId>,
<R as system::Trait>::Event: From<balances::RawEvent<
<R as system::Trait>::AccountId,
<R as balances::Trait>::Balance,
balances::DefaultInstance>
>,
{
fn on_nonzero_unbalanced(amount: NegativeImbalance<R>) {
let numeric_amount = amount.peek();
let author = <authorship::Module<R>>::author();
<balances::Module<R>>::resolve_creating(&<authorship::Module<R>>::author(), amount);
<system::Module<R>>::deposit_event(balances::RawEvent::Deposit(author, numeric_amount));
}
}
/// Converter for currencies to votes.
pub struct CurrencyToVoteHandler<R>(sp_std::marker::PhantomData<R>);
impl<R> CurrencyToVoteHandler<R>
where
R: balances::Trait,
R::Balance: Into<u128>,
{
fn factor() -> u128 {
let issuance: u128 = <balances::Module<R>>::total_issuance().into();
(issuance / u64::max_value() as u128).max(1)
}
}
impl<R> Convert<u128, u64> for CurrencyToVoteHandler<R>
where
R: balances::Trait,
R::Balance: Into<u128>,
{
fn convert(x: u128) -> u64 { (x / Self::factor()) as u64 }
}
impl<R> Convert<u128, u128> for CurrencyToVoteHandler<R>
where
R: balances::Trait,
R::Balance: Into<u128>,
{
fn convert(x: u128) -> u128 { x * Self::factor() }
}