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Add FixedPointOperand blanket implementation (#14634)

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* bound `Balance` to `FixedPointOperand`

* ".git/.scripts/commands/fmt/fmt.sh"

* clean up code

* Apply suggestions from code review

Co-authored-by: Gavin Wood <gavin@parity.io>

* wip

* add blanket `FixedPointOperand` impl

* update nis CurrencyBalance

* remove CheckedNeg bound

---------

Co-authored-by: command-bot <>
Co-authored-by: Gavin Wood <gavin@parity.io>
This commit is contained in:
Juan
2023-08-02 09:54:11 +02:00
committed by GitHub
parent 77321288c3
commit 85f9931e4f
11 changed files with 35 additions and 63 deletions
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substrate/frame/support/src/traits/tokens/currency.rs
+2 -4
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@@ -25,9 +25,7 @@ use crate::{
dispatch::{DispatchError, DispatchResult},
traits::Get,
};
use codec::MaxEncodedLen;
use sp_runtime::{traits::MaybeSerializeDeserialize, FixedPointOperand};
use sp_std::fmt::Debug;
use sp_runtime::traits::MaybeSerializeDeserialize;
mod reservable;
pub use reservable::{NamedReservableCurrency, ReservableCurrency};
@@ -37,7 +35,7 @@ pub use lockable::{LockIdentifier, LockableCurrency, VestingSchedule};
/// Abstraction over a fungible assets system.
pub trait Currency<AccountId> {
/// The balance of an account.
type Balance: Balance + MaybeSerializeDeserialize + Debug + MaxEncodedLen + FixedPointOperand;
type Balance: Balance + MaybeSerializeDeserialize;
/// The opaque token type for an imbalance. This is returned by unbalanced operations
/// and must be dealt with. It may be dropped but cannot be cloned.