Trait HashedStorageCursor 

pub trait HashedStorageCursor: HashedCursor {
    // Required methods
    fn is_storage_empty(&mut self) -> Result<bool, DatabaseError>;
    fn set_hashed_address(&mut self, hashed_address: FixedBytes<32>);
}

Available on crate feature trie only.

The cursor for iterating over hashed storage entries.

Required Methods

fn is_storage_empty(&mut self) -> Result<bool, DatabaseError>

Returns true if the current hashed address has no storage entries.

May be called immediately after Self::set_hashed_address, without first seeking. This may change the cursor position; seek before iterating entries afterward.

fn set_hashed_address(&mut self, hashed_address: FixedBytes<32>)

Set the hashed address for the storage cursor.

Call HashedCursor::seek before iterating entries with HashedCursor::next. Self::is_storage_empty may be called before seeking.

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> HashedStorageCursor for &'a mut T

where T: 'a + HashedStorageCursor + ?Sized, &'a mut T: HashedCursor,

fn is_storage_empty(&mut self) -> Result<bool, DatabaseError>

fn set_hashed_address(&mut self, hashed_address: FixedBytes<32>)

Implementors

impl HashedStorageCursor for NoopHashedCursor<Uint<256, 4>>

impl<C> HashedStorageCursor for DatabaseHashedStorageCursor<C>

where C: DbCursorRO<HashedStorages> + DbDupCursorRO<HashedStorages>,

impl<C> HashedStorageCursor for HashedPostStateCursor<'_, C, Uint<256, 4>>

where C: HashedStorageCursor<Value = Uint<256, 4>>,

The cursor to iterate over post state hashed values and corresponding database entries. It will always give precedence to the data from the post state.

impl<C> HashedStorageCursor for InstrumentedHashedCursor<C>

where C: HashedStorageCursor,

impl<T> HashedStorageCursor for MockHashedCursor<T>

where T: Debug + Clone,