Trait State

pub trait State {
    type Error: StdError;

    // Required methods
    fn basic(
        &mut self,
        address: Address,
    ) -> Result<Option<AccountInfo>, Self::Error>;
    fn code_by_hash(&mut self, code_hash: B256) -> Result<Bytecode, Self::Error>;
    fn storage(
        &mut self,
        address: Address,
        index: StorageKey,
    ) -> Result<StorageValue, Self::Error>;
}

Trait for mutable access to state data including accounts, code, and storage. This is typically used for database implementations that may modify state or need mutable access for caching purposes.

Required Associated Types

type Error: StdError

Error type for state operations

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: B256) -> Result<Bytecode, Self::Error>

Gets account code by its hash.

fn storage( &mut self, address: Address, index: StorageKey, ) -> Result<StorageValue, Self::Error>

Gets storage value of address at index.

Implementations on Foreign Types

impl<'a, T: 'a + State + ?Sized> State for &'a mut T

type Error = <T as State>::Error

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

fn code_by_hash(&mut self, code_hash: B256) -> Result<Bytecode, Self::Error>

fn storage( &mut self, address: Address, index: StorageKey, ) -> Result<StorageValue, Self::Error>

impl<T> State for &T

where T: StateRef,

type Error = <T as StateRef>::Error

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

fn code_by_hash(&mut self, code_hash: B256) -> Result<Bytecode, Self::Error>

fn storage( &mut self, address: Address, index: StorageKey, ) -> Result<StorageValue, Self::Error>

impl<T> State for Arc<T>

where T: StateRef,

type Error = <T as StateRef>::Error

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

fn code_by_hash(&mut self, code_hash: B256) -> Result<Bytecode, Self::Error>

fn storage( &mut self, address: Address, index: StorageKey, ) -> Result<StorageValue, Self::Error>

impl<T: State + ?Sized> State for Box<T>

type Error = <T as State>::Error

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

fn code_by_hash(&mut self, code_hash: B256) -> Result<Bytecode, Self::Error>

fn storage( &mut self, address: Address, index: StorageKey, ) -> Result<StorageValue, Self::Error>

Implementors