Trait frame_support::traits::tokens::fungibles::Inspect

pub trait Inspect<AccountId> {
    type AssetId: AssetId;
    type Balance: Balance;
    fn total_issuance(asset: Self::AssetId) -> Self::Balance;
    fn minimum_balance(asset: Self::AssetId) -> Self::Balance;
    fn balance(asset: Self::AssetId, who: &AccountId) -> Self::Balance;
    fn reducible_balance(
        asset: Self::AssetId, 
        who: &AccountId, 
        keep_alive: bool
    ) -> Self::Balance;
    fn can_deposit(
        asset: Self::AssetId, 
        who: &AccountId, 
        amount: Self::Balance
    ) -> DepositConsequence;
    fn can_withdraw(
        asset: Self::AssetId, 
        who: &AccountId, 
        amount: Self::Balance
    ) -> WithdrawConsequence<Self::Balance>;
}

Trait for providing balance-inspection access to a set of named fungible assets.

Associated Types

type AssetId: AssetId

Means of identifying one asset class from another.

type Balance: Balance

Scalar type for representing balance of an account.

Required methods

fn total_issuance(asset: Self::AssetId) -> Self::Balance

The total amount of issuance in the system.

fn minimum_balance(asset: Self::AssetId) -> Self::Balance

The minimum balance any single account may have.

fn balance(asset: Self::AssetId, who: &AccountId) -> Self::Balance

Get the asset balance of who.

fn reducible_balance(
    asset: Self::AssetId,
    who: &AccountId,
    keep_alive: bool
) -> Self::Balance

Get the maximum amount of asset that who can withdraw/transfer successfully.

fn can_deposit(
    asset: Self::AssetId,
    who: &AccountId,
    amount: Self::Balance
) -> DepositConsequence

Returns true if the asset balance of who may be increased by amount.

fn can_withdraw(
    asset: Self::AssetId,
    who: &AccountId,
    amount: Self::Balance
) -> WithdrawConsequence<Self::Balance>

Returns Failed if the asset balance of who may not be decreased by amount, otherwise the consequence.

Implementors