Struct fuel_vm::storage::ContractsState

pub struct ContractsState;

The storage table for contract’s hashed key-value state.

Lifetime is for optimization to avoid clone.

Trait Implementations

impl Mappable for ContractsState

type OwnedKey = ContractsStateKey

The table key is combination of the ContractId and Bytes32 hash of the value’s key.

type Value = Bytes32

The table value is hash of the value.

type Key = <ContractsState as Mappable>::OwnedKey

The key type is used during interaction with the storage. In most cases, it is the same as Self::OwnedKey.

type OwnedValue = <ContractsState as Mappable>::Value

The owned type of the Value retrieving from the storage.

impl MerkleRootStorage<ContractId, ContractsState> for MemoryStorage

fn root(&self, parent: &ContractId) -> Result<MerkleRoot, Infallible>

Return the merkle root of the stored Type in the storage.

impl StorageInspect<ContractsState> for MemoryStorage

type Error = Infallible

fn get( &self, key: &<ContractsState as Mappable>::Key ) -> Result<Option<Cow<'_, Bytes32>>, Infallible>

Retrieve Cow<Value> such as Key->Value.

fn contains_key( &self, key: &<ContractsState as Mappable>::Key ) -> Result<bool, Infallible>

Return true if there is a Key mapping to a value in the storage.

impl StorageMutate<ContractsState> for MemoryStorage

fn insert( &mut self, key: &<ContractsState as Mappable>::Key, value: &Bytes32 ) -> Result<Option<Bytes32>, Infallible>

Append Key->Value mapping to the storage.

fn remove( &mut self, key: &<ContractsState as Mappable>::Key ) -> Result<Option<Bytes32>, Infallible>

Remove Key->Value mapping from the storage.