Trait Host

pub trait Host {
    // Required methods
    fn env(&self) -> &Env;
    fn env_mut(&mut self) -> &mut Env;
    fn load_account_delegated(
        &mut self,
        address: Address,
    ) -> Option<AccountLoad>;
    fn block_hash(&mut self, number: u64) -> Option<FixedBytes<32>>;
    fn balance(&mut self, address: Address) -> Option<StateLoad<Uint<256, 4>>>;
    fn code(&mut self, address: Address) -> Option<Eip7702CodeLoad<Bytes>>;
    fn code_hash(
        &mut self,
        address: Address,
    ) -> Option<Eip7702CodeLoad<FixedBytes<32>>>;
    fn sload(
        &mut self,
        address: Address,
        index: Uint<256, 4>,
    ) -> Option<StateLoad<Uint<256, 4>>>;
    fn sstore(
        &mut self,
        address: Address,
        index: Uint<256, 4>,
        value: Uint<256, 4>,
    ) -> Option<StateLoad<SStoreResult>>;
    fn tload(&mut self, address: Address, index: Uint<256, 4>) -> Uint<256, 4>;
    fn tstore(
        &mut self,
        address: Address,
        index: Uint<256, 4>,
        value: Uint<256, 4>,
    );
    fn log(&mut self, log: Log);
    fn selfdestruct(
        &mut self,
        address: Address,
        target: Address,
    ) -> Option<StateLoad<SelfDestructResult>>;
}

EVM context host.

Required Methods

fn env(&self) -> &Env

Returns a reference to the environment.

fn env_mut(&mut self) -> &mut Env

Returns a mutable reference to the environment.

fn load_account_delegated(&mut self, address: Address) -> Option<AccountLoad>

Load an account code.

fn block_hash(&mut self, number: u64) -> Option<FixedBytes<32>>

Get the block hash of the given block number.

fn balance(&mut self, address: Address) -> Option<StateLoad<Uint<256, 4>>>

Get balance of address and if the account is cold.

fn code(&mut self, address: Address) -> Option<Eip7702CodeLoad<Bytes>>

Get code of address and if the account is cold.

fn code_hash( &mut self, address: Address, ) -> Option<Eip7702CodeLoad<FixedBytes<32>>>

Get code hash of address and if the account is cold.

fn sload( &mut self, address: Address, index: Uint<256, 4>, ) -> Option<StateLoad<Uint<256, 4>>>

Get storage value of address at index and if the account is cold.

fn sstore( &mut self, address: Address, index: Uint<256, 4>, value: Uint<256, 4>, ) -> Option<StateLoad<SStoreResult>>

Set storage value of account address at index.

Returns StateLoad with SStoreResult that contains original/new/old storage value.

fn tload(&mut self, address: Address, index: Uint<256, 4>) -> Uint<256, 4>

Get the transient storage value of address at index.

fn tstore(&mut self, address: Address, index: Uint<256, 4>, value: Uint<256, 4>)

Set the transient storage value of address at index.

fn log(&mut self, log: Log)

Emit a log owned by address with given LogData.

fn selfdestruct( &mut self, address: Address, target: Address, ) -> Option<StateLoad<SelfDestructResult>>

Mark address to be deleted, with funds transferred to target.

Implementors

impl Host for DummyHost

impl<EXT, DB> Host for Context<EXT, DB>

where DB: Database,