Trait RuntimeBackend

pub trait RuntimeBackend: RuntimeBaseBackend {
    // Required methods
    fn original_storage(&self, address: H160, index: H256) -> H256;
    fn deleted(&self, address: H160) -> bool;
    fn created(&self, address: H160) -> bool;
    fn is_cold(&self, address: H160, index: Option<H256>) -> bool;
    fn mark_hot(&mut self, address: H160, kind: TouchKind);
    fn mark_storage_hot(&mut self, address: H160, index: H256);
    fn set_storage(
        &mut self,
        address: H160,
        index: H256,
        value: H256,
    ) -> Result<(), ExitError>;
    fn set_transient_storage(
        &mut self,
        address: H160,
        index: H256,
        value: H256,
    ) -> Result<(), ExitError>;
    fn log(&mut self, log: Log) -> Result<(), ExitError>;
    fn mark_delete_reset(&mut self, address: H160);
    fn mark_create(&mut self, address: H160);
    fn reset_storage(&mut self, address: H160);
    fn set_code(
        &mut self,
        address: H160,
        code: Vec<u8>,
        origin: SetCodeOrigin,
    ) -> Result<(), ExitError>;
    fn deposit(&mut self, target: H160, value: U256);
    fn withdrawal(&mut self, source: H160, value: U256) -> Result<(), ExitError>;
    fn inc_nonce(&mut self, address: H160) -> Result<(), ExitError>;

    // Provided methods
    fn is_hot(&self, address: H160, index: Option<H256>) -> bool { ... }
    fn transfer(&mut self, transfer: Transfer) -> Result<(), ExitError> { ... }
}

The distinguish between RuntimeBaseBackend and RuntimeBackend is for the implementation of overlays.

Required Methods

fn original_storage(&self, address: H160, index: H256) -> H256

Get original storage value of address at index.

fn deleted(&self, address: H160) -> bool

Check whether an address has already been deleted.

fn created(&self, address: H160) -> bool

Check whether an address has already been created in the transaction.

fn is_cold(&self, address: H160, index: Option<H256>) -> bool

Checks if the address or (address, index) pair has been previously accessed.

fn mark_hot(&mut self, address: H160, kind: TouchKind)

Mark an address as hot.

fn mark_storage_hot(&mut self, address: H160, index: H256)

Mark an (address, index) pair as hot.

fn set_storage( &mut self, address: H160, index: H256, value: H256, ) -> Result<(), ExitError>

Set storage value of address at index.

fn set_transient_storage( &mut self, address: H160, index: H256, value: H256, ) -> Result<(), ExitError>

Set transient storage value of address at index, transient storage gets discarded after every transaction. (see EIP-1153)

fn log(&mut self, log: Log) -> Result<(), ExitError>

Create a log owned by address with given topics and data.

fn mark_delete_reset(&mut self, address: H160)

Mark an address to be deleted and its balance to be reset.

fn mark_create(&mut self, address: H160)

Mark an address as created in the current transaction.

fn reset_storage(&mut self, address: H160)

Fully delete storages of an account.

fn set_code( &mut self, address: H160, code: Vec<u8>, origin: SetCodeOrigin, ) -> Result<(), ExitError>

Set code of an account.

fn deposit(&mut self, target: H160, value: U256)

Deposit value into the target.

fn withdrawal(&mut self, source: H160, value: U256) -> Result<(), ExitError>

Withdrawal value from the source.

fn inc_nonce(&mut self, address: H160) -> Result<(), ExitError>

Increase the nonce value.

Provided Methods

fn is_hot(&self, address: H160, index: Option<H256>) -> bool

Checks if the address is hot. Opposite of RuntimeBackend::is_cold.

fn transfer(&mut self, transfer: Transfer) -> Result<(), ExitError>

Initiate a transfer.

Implementors