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Tidy Democracy (#10867)

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* add test

* Assorted refactorings

* complete test

* saturating math

* final check

* use `default`

Co-authored-by: Gav Wood <gavin@parity.io>
This commit is contained in:
Shawn Tabrizi
2022-02-16 08:57:54 -07:00
committed by GitHub
parent 1a744befd4
commit ba8c882a7a
3 changed files with 79 additions and 13 deletions
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substrate/frame/democracy/src/lib.rs
+31 -11
View File
@@ -842,7 +842,12 @@ pub mod pallet {
<NextExternal<T>>::kill();
let now = <frame_system::Pallet<T>>::block_number();
Self::inject_referendum(now + voting_period, proposal_hash, threshold, delay);
Self::inject_referendum(
now.saturating_add(voting_period),
proposal_hash,
threshold,
delay,
);
Ok(())
}
@@ -871,7 +876,8 @@ pub mod pallet {
existing_vetoers.binary_search(&who).err().ok_or(Error::<T>::AlreadyVetoed)?;
existing_vetoers.insert(insert_position, who.clone());
let until = <frame_system::Pallet<T>>::block_number() + T::CooloffPeriod::get();
let until =
<frame_system::Pallet<T>>::block_number().saturating_add(T::CooloffPeriod::get());
<Blacklist<T>>::insert(&proposal_hash, (until, existing_vetoers));
Self::deposit_event(Event::<T>::Vetoed { who, proposal_hash, until });
@@ -1089,7 +1095,10 @@ pub mod pallet {
let now = <frame_system::Pallet<T>>::block_number();
let (voting, enactment) = (T::VotingPeriod::get(), T::EnactmentPeriod::get());
let additional = if who == provider { Zero::zero() } else { enactment };
ensure!(now >= since + voting + additional, Error::<T>::TooEarly);
ensure!(
now >= since.saturating_add(voting).saturating_add(additional),
Error::<T>::TooEarly
);
ensure!(expiry.map_or(true, |e| now > e), Error::<T>::Imminent);
let res =
@@ -1282,7 +1291,7 @@ impl<T: Config> Pallet<T> {
/// Get the amount locked in support of `proposal`; `None` if proposal isn't a valid proposal
/// index.
pub fn backing_for(proposal: PropIndex) -> Option<BalanceOf<T>> {
Self::deposit_of(proposal).map(|(l, d)| d * (l.len() as u32).into())
Self::deposit_of(proposal).map(|(l, d)| d.saturating_mul((l.len() as u32).into()))
}
/// Get all referenda ready for tally at block `n`.
@@ -1318,7 +1327,7 @@ impl<T: Config> Pallet<T> {
delay: T::BlockNumber,
) -> ReferendumIndex {
<Pallet<T>>::inject_referendum(
<frame_system::Pallet<T>>::block_number() + T::VotingPeriod::get(),
<frame_system::Pallet<T>>::block_number().saturating_add(T::VotingPeriod::get()),
proposal_hash,
threshold,
delay,
@@ -1424,7 +1433,9 @@ impl<T: Config> Pallet<T> {
},
Some(ReferendumInfo::Finished { end, approved }) => {
if let Some((lock_periods, balance)) = votes[i].1.locked_if(approved) {
let unlock_at = end + T::VoteLockingPeriod::get() * lock_periods.into();
let unlock_at = end.saturating_add(
T::VoteLockingPeriod::get().saturating_mul(lock_periods.into()),
);
let now = frame_system::Pallet::<T>::block_number();
if now < unlock_at {
ensure!(
@@ -1513,9 +1524,16 @@ impl<T: Config> Pallet<T> {
};
sp_std::mem::swap(&mut old, voting);
match old {
Voting::Delegating { balance, target, conviction, delegations, prior, .. } => {
Voting::Delegating {
balance, target, conviction, delegations, mut prior, ..
} => {
// remove any delegation votes to our current target.
Self::reduce_upstream_delegation(&target, conviction.votes(balance));
let now = frame_system::Pallet::<T>::block_number();
let lock_periods = conviction.lock_periods().into();
let unlock_block = now
.saturating_add(T::VoteLockingPeriod::get().saturating_mul(lock_periods));
prior.accumulate(unlock_block, balance);
voting.set_common(delegations, prior);
},
Voting::Direct { votes, delegations, prior } => {
@@ -1548,7 +1566,9 @@ impl<T: Config> Pallet<T> {
Self::reduce_upstream_delegation(&target, conviction.votes(balance));
let now = frame_system::Pallet::<T>::block_number();
let lock_periods = conviction.lock_periods().into();
prior.accumulate(now + T::VoteLockingPeriod::get() * lock_periods, balance);
let unlock_block = now
.saturating_add(T::VoteLockingPeriod::get().saturating_mul(lock_periods));
prior.accumulate(unlock_block, balance);
voting.set_common(delegations, prior);
Ok(votes)
@@ -1607,7 +1627,7 @@ impl<T: Config> Pallet<T> {
LastTabledWasExternal::<T>::put(true);
Self::deposit_event(Event::<T>::ExternalTabled);
Self::inject_referendum(
now + T::VotingPeriod::get(),
now.saturating_add(T::VotingPeriod::get()),
proposal,
threshold,
T::EnactmentPeriod::get(),
@@ -1639,7 +1659,7 @@ impl<T: Config> Pallet<T> {
depositors,
});
Self::inject_referendum(
now + T::VotingPeriod::get(),
now.saturating_add(T::VotingPeriod::get()),
proposal,
VoteThreshold::SuperMajorityApprove,
T::EnactmentPeriod::get(),
@@ -1693,7 +1713,7 @@ impl<T: Config> Pallet<T> {
if status.delay.is_zero() {
let _ = Self::do_enact_proposal(status.proposal_hash, index);
} else {
let when = now + status.delay;
let when = now.saturating_add(status.delay);
// Note that we need the preimage now.
Preimages::<T>::mutate_exists(
&status.proposal_hash,