Trait StateRef 

pub trait StateRef {
    type Error: Error + Send + Sync + 'static;

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

Trait for immutable access to state data including accounts, code, and storage. This is typically used for read-only database implementations or when state data is pre-loaded and doesn’t require modification.

Required Associated Types

type Error: Error + Send + Sync + 'static

Error type for state operations

Required Methods

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

Gets basic account information.

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

Gets account code by its hash.

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

Gets storage value of address at index.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

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

type Error = <T as StateRef>::Error

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

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

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

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

type Error = <T as StateRef>::Error

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

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

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

impl<T: StateRef + ?Sized> StateRef for Arc<T>

type Error = <T as StateRef>::Error

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

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

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

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

type Error = <T as StateRef>::Error

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

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

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

impl<T: StateRef + ?Sized> StateRef for Rc<T>

type Error = <T as StateRef>::Error

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

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

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

Implementors