Trait Database 

pub trait Database {
    type Error: DBErrorMarker;

    // Required methods
    fn basic(
        &mut self,
        address: Address,
    ) -> Result<Option<AccountInfo>, Self::Error>;
    fn code_by_hash(
        &mut self,
        code_hash: FixedBytes<32>,
    ) -> Result<Bytecode, Self::Error>;
    fn storage(
        &mut self,
        address: Address,
        index: Uint<256, 4>,
    ) -> Result<Uint<256, 4>, Self::Error>;
    fn block_hash(&mut self, number: u64) -> Result<FixedBytes<32>, Self::Error>;

    // Provided method
    fn storage_by_account_id(
        &mut self,
        address: Address,
        account_id: usize,
        storage_key: Uint<256, 4>,
    ) -> Result<Uint<256, 4>, Self::Error> { ... }
}

EVM database interface.

Required Associated Types

type Error: DBErrorMarker

The database error type.

Required Methods

fn basic( &mut self, address: Address, ) -> Result<Option<AccountInfo>, Self::Error>

Gets basic account information.

fn code_by_hash( &mut self, code_hash: FixedBytes<32>, ) -> Result<Bytecode, Self::Error>

Gets account code by its hash.

fn storage( &mut self, address: Address, index: Uint<256, 4>, ) -> Result<Uint<256, 4>, Self::Error>

Gets storage value of address at index.

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

Gets block hash by block number.

Provided Methods

fn storage_by_account_id( &mut self, address: Address, account_id: usize, storage_key: Uint<256, 4>, ) -> Result<Uint<256, 4>, Self::Error>

Gets storage value of account by its id. By default call Database::storage method.

If basic account sets account_id inside AccountInfo::account_id, evm will call this function with that given account_id. This can be useful if IndexMap is used to get faster access to the account.

Implementations on Foreign Types

impl Database for BenchmarkDB

fn basic( &mut self, address: Address, ) -> Result<Option<AccountInfo>, <BenchmarkDB as Database>::Error>

Get basic account information.

fn code_by_hash( &mut self, code_hash: FixedBytes<32>, ) -> Result<Bytecode, <BenchmarkDB as Database>::Error>

Get account code by its hash

fn storage( &mut self, _address: Address, _index: Uint<256, 4>, ) -> Result<Uint<256, 4>, <BenchmarkDB as Database>::Error>

Get storage value of address at index.

type Error = Infallible

fn block_hash( &mut self, _number: u64, ) -> Result<FixedBytes<32>, <BenchmarkDB as Database>::Error>

impl<'a, T> Database for &'a mut T

where T: 'a + Database + ?Sized,

type Error = <T as Database>::Error

fn basic( &mut self, address: Address, ) -> Result<Option<AccountInfo>, <&'a mut T as Database>::Error>

fn code_by_hash( &mut self, code_hash: FixedBytes<32>, ) -> Result<Bytecode, <&'a mut T as Database>::Error>

fn storage( &mut self, address: Address, index: Uint<256, 4>, ) -> Result<Uint<256, 4>, <&'a mut T as Database>::Error>

fn storage_by_account_id( &mut self, address: Address, account_id: usize, storage_key: Uint<256, 4>, ) -> Result<Uint<256, 4>, <&'a mut T as Database>::Error>

fn block_hash( &mut self, number: u64, ) -> Result<FixedBytes<32>, <&'a mut T as Database>::Error>

impl<ExtDB> Database for CacheDB<ExtDB>

where ExtDB: DatabaseRef,

fn storage( &mut self, address: Address, index: Uint<256, 4>, ) -> Result<Uint<256, 4>, <CacheDB<ExtDB> as Database>::Error>

Get the value in an account’s storage slot.

It is assumed that account is already loaded.

type Error = <ExtDB as DatabaseRef>::Error

fn basic( &mut self, address: Address, ) -> Result<Option<AccountInfo>, <CacheDB<ExtDB> as Database>::Error>

fn code_by_hash( &mut self, code_hash: FixedBytes<32>, ) -> Result<Bytecode, <CacheDB<ExtDB> as Database>::Error>

fn block_hash( &mut self, number: u64, ) -> Result<FixedBytes<32>, <CacheDB<ExtDB> as Database>::Error>

impl<T> Database for Box<T>

where T: Database + ?Sized,

type Error = <T as Database>::Error

fn basic( &mut self, address: Address, ) -> Result<Option<AccountInfo>, <Box<T> as Database>::Error>

fn code_by_hash( &mut self, code_hash: FixedBytes<32>, ) -> Result<Bytecode, <Box<T> as Database>::Error>

fn storage( &mut self, address: Address, index: Uint<256, 4>, ) -> Result<Uint<256, 4>, <Box<T> as Database>::Error>

fn storage_by_account_id( &mut self, address: Address, account_id: usize, storage_key: Uint<256, 4>, ) -> Result<Uint<256, 4>, <Box<T> as Database>::Error>

fn block_hash( &mut self, number: u64, ) -> Result<FixedBytes<32>, <Box<T> as Database>::Error>

Implementors

impl<DB> Database for BalDatabase<DB>

where DB: Database,

type Error = EvmDatabaseError<<DB as Database>::Error>

impl<DB> Database for State<DB>

where DB: Database,

type Error = EvmDatabaseError<<DB as Database>::Error>

impl<DB: EvmStateProvider> Database for StateProviderDatabase<DB>

type Error = ProviderError

impl<DB: DatabaseRef> Database for CachedReadsDbMut<'_, DB>

type Error = <DB as DatabaseRef>::Error

impl<E> Database for EmptyDBTyped<E>

where E: DBErrorMarker + Error + Send + Sync + 'static,

type Error = E

impl<L, R> Database for Either<L, R>

where L: Database, R: Database<Error = <L as Database>::Error>,

type Error = <L as Database>::Error

impl<T> Database for WrapDatabaseRef<T>

where T: DatabaseRef,

type Error = <T as DatabaseRef>::Error