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Introduce IgnoredIssuance into Gilts (#8299)

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* IgnoredIssuance

* Fixes

* Fixes
This commit is contained in:
Gavin Wood
2021-03-09 14:03:47 +01:00
committed by GitHub
parent 643a0ecd38
commit a49210693b
4 changed files with 40 additions and 5 deletions
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substrate/frame/gilt/src/lib.rs
+10 -4
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@@ -109,6 +109,10 @@ pub mod pallet {
/// over freezing period).
type Surplus: OnUnbalanced<NegativeImbalanceOf<Self>>;
/// The issuance to ignore. This is subtracted from the `Currency`'s `total_issuance` to get
/// the issuance by which we inflate or deflate the gilt.
type IgnoredIssuance: Get<BalanceOf<Self>>;
/// Number of duration queues in total. This sets the maximum duration supported, which is
/// this value multiplied by `Period`.
#[pallet::constant]
@@ -191,7 +195,9 @@ pub mod pallet {
/// The way of determining the net issuance (i.e. after factoring in all maturing frozen funds)
/// is:
///
/// `total_issuance - frozen + proportion * total_issuance`
/// `issuance - frozen + proportion * issuance`
///
/// where `issuance = total_issuance - IgnoredIssuance`
#[derive(Clone, Eq, PartialEq, Default, Encode, Decode, RuntimeDebug)]
pub struct ActiveGiltsTotal<Balance> {
/// The total amount of funds held in reserve for all active gilts.
@@ -440,7 +446,7 @@ pub mod pallet {
Active::<T>::remove(index);
// Multiply the proportion it is by the total issued.
let total_issuance = T::Currency::total_issuance();
let total_issuance = T::Currency::total_issuance().saturating_sub(T::IgnoredIssuance::get());
ActiveTotal::<T>::mutate(|totals| {
let nongilt_issuance: u128 = total_issuance.saturating_sub(totals.frozen)
.saturated_into();
@@ -490,7 +496,7 @@ pub mod pallet {
if totals.proportion < totals.target {
let missing = totals.target.saturating_sub(totals.proportion);
let total_issuance = T::Currency::total_issuance();
let total_issuance = T::Currency::total_issuance().saturating_sub(T::IgnoredIssuance::get());
let nongilt_issuance: u128 = total_issuance.saturating_sub(totals.frozen)
.saturated_into();
let effective_issuance = totals.proportion.left_from_one()
@@ -515,7 +521,7 @@ pub mod pallet {
amount: BalanceOf<T>,
max_bids: u32,
) -> (u32, u32) {
let total_issuance = T::Currency::total_issuance();
let total_issuance = T::Currency::total_issuance().saturating_sub(T::IgnoredIssuance::get());
let mut remaining = amount;
let mut bids_taken = 0;
let mut queues_hit = 0;