Struct fuel_vm::storage::ContractsAssets

pub struct ContractsAssets<'a>(_);

The storage table for contract’s assets balances.

Lifetime is for optimization to avoid clone.

Trait Implementations

impl<'a> Mappable for ContractsAssets<'a>

type Key = (&'a ContractId, &'a AssetId)

The type of the value’s key.

type SetValue = u64

The value type is used while setting the value to the storage. In most cases, it is the same as Self::GetValue, but it is without restriction and can be used for performance optimizations.

type GetValue = <ContractsAssets<'a> as Mappable>::SetValue

The value type is used while getting the value from the storage.

impl MerkleRootStorage<ContractId, ContractsAssets<'_>> for MemoryStorage

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

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

impl StorageInspect<ContractsAssets<'_>> for MemoryStorage

type Error = Infallible

fn get(
    &self,
    key: &(&ContractId, &AssetId)
) -> Result<Option<Cow<'_, Word>>, Infallible>

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

fn contains_key(&self, key: &(&ContractId, &AssetId)) -> Result<bool, Infallible>

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

impl StorageMutate<ContractsAssets<'_>> for MemoryStorage

fn insert(
    &mut self,
    key: &(&ContractId, &AssetId),
    value: &Word
) -> Result<Option<Word>, Infallible>

Append Key->Value mapping to the storage.

fn remove(
    &mut self,
    key: &(&ContractId, &AssetId)
) -> Result<Option<Word>, Infallible>

Remove Key->Value mapping from the storage.