Trait Database

pub trait Database {
    type Error;

    // 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>;
}

EVM database interface.

Required Associated Types

type Error

The database error type.

Required Methods

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

Get basic account information.

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

Get account code by its hash.

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

Get storage value of address at index.

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

Get block hash by block number.

Implementations on Foreign Types

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

Implementors

impl Database for Backend

type Error = DatabaseError

impl Database for CowBackend<'_>

type Error = DatabaseError

impl Database for MemDb

type Error = DatabaseError

impl Database for ForkedDatabase

type Error = DatabaseError

impl Database for BenchmarkDB

type Error = Infallible

impl<DB> Database for State<DB>

where DB: Database,

type Error = <DB as Database>::Error

impl<E> Database for EmptyDBTyped<E>

type Error = E

impl<ExtDB> Database for CacheDB<ExtDB>

where ExtDB: DatabaseRef,

type Error = <ExtDB as DatabaseRef>::Error

impl<S, BH> Database for DatabaseComponents<S, BH>

where S: State, BH: BlockHash,

type Error = DatabaseComponentError<<S as State>::Error, <BH as BlockHash>::Error>

impl<T> Database for WrapDatabaseRef<T>

where T: DatabaseRef,

type Error = <T as DatabaseRef>::Error