Trait darwinia_evm::CurrencyAdapt

pub trait CurrencyAdapt<T: Config> {
    fn account_balance(account_id: &T::AccountId) -> U256;
    fn evm_total_supply() -> U256;
    fn mutate_account_balance(account_id: &T::AccountId, balance: U256);
    fn ensure_can_withdraw(
        who: &T::AccountId, 
        amount: U256, 
        reasons: WithdrawReasons
    ) -> Result<(), ExitError>;
    fn evm_transfer(
        source: &T::AccountId, 
        target: &T::AccountId, 
        value: U256
    ) -> Result<(), ExitError>;

    fn evm_balance(address: &H160) -> U256 { ... }
    fn mutate_evm_balance(address: &H160, new_balance: U256) { ... }
}

A trait for handling currency decimal difference between native and evm tokens.

Required Methods

fn account_balance(account_id: &T::AccountId) -> U256

Get account balance, the decimal of the returned result is consistent with Ethereum.

fn evm_total_supply() -> U256

Get the total supply of token in Ethereum decimal.

fn mutate_account_balance(account_id: &T::AccountId, balance: U256)

Mutate account balance, the new_balance’s decimal should be the same as Ethereum.

fn ensure_can_withdraw(
    who: &T::AccountId,
    amount: U256,
    reasons: WithdrawReasons
) -> Result<(), ExitError>

Ensure that an account can withdraw from their fee balance.

fn evm_transfer(
    source: &T::AccountId,
    target: &T::AccountId,
    value: U256
) -> Result<(), ExitError>

Transfer value. the value’s decimal should be the same as Ethereum.

Provided Methods

fn evm_balance(address: &H160) -> U256

Get the account balance by ethereum address, the decimal of the returned result is consistent with Ethereum.

fn mutate_evm_balance(address: &H160, new_balance: U256)

Implementors