Trait pallet_assets::FrozenBalance

pub trait FrozenBalance<AssetId, AccountId, Balance> {
    fn frozen_balance(asset: AssetId, who: &AccountId) -> Option<Balance>;
    fn died(asset: AssetId, who: &AccountId);
}

Trait for allowing a minimum balance on the account to be specified, beyond the minimum_balance of the asset. This is additive - the minimum_balance of the asset must be met and then anything here in addition.

Required methods

fn frozen_balance(asset: AssetId, who: &AccountId) -> Option<Balance>

Return the frozen balance. Under normal behaviour, this amount should always be withdrawable.

In reality, the balance of every account must be at least the sum of this (if Some) and the asset’s minimum_balance, since there may be complications to destroying an asset’s account completely.

If None is returned, then nothing special is enforced.

If any operation ever breaks this requirement (which will only happen through some sort of privileged intervention), then melted is called to do any cleanup.

fn died(asset: AssetId, who: &AccountId)

Called when an account has been removed.

Implementations on Foreign Types

impl<AssetId, AccountId, Balance> FrozenBalance<AssetId, AccountId, Balance> for ()

fn frozen_balance(_: AssetId, _: &AccountId) -> Option<Balance>

fn died(_: AssetId, _: &AccountId)

Implementors