Struct RuntimeBalances

pub struct RuntimeBalances { /* private fields */ }

Structure to encapsulate asset balances for VM runtime

Implementations

impl RuntimeBalances

pub fn try_from_iter<T>(iter: T) -> Result<Self, ValidityError>

where T: IntoIterator<Item = (AssetId, Word)>,

Attempt to create a set of runtime balances from an iterator of pairs.

This will fail if, and only if, the provided asset/balance pair isn’t consistent or a balance overflows.

pub fn balance(&self, asset: &AssetId) -> Option<Word>

Fetch the balance of a given Id, if set.

pub fn checked_balance_sub( &mut self, memory: &mut MemoryInstance, asset: &AssetId, value: Word, ) -> Option<Word>

Attempt to subtract the balance of an asset, updating the VM memory in the appropriate offset

pub fn to_vm<M, S, Tx, Ecal>(self, vm: &mut Interpreter<M, S, Tx, Ecal>)

where M: Memory, Tx: ExecutableTransaction,

Write all assets into the start of VM stack, i.e. at $ssp. Panics if the assets cannot fit.

Trait Implementations

impl AsMut<HashMap<AssetId, Balance>> for RuntimeBalances

fn as_mut(&mut self) -> &mut HashMap<AssetId, Balance>

Converts this type into a mutable reference of the (usually inferred) input type.

impl AsRef<HashMap<AssetId, Balance>> for RuntimeBalances

fn as_ref(&self) -> &HashMap<AssetId, Balance>

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for RuntimeBalances

fn clone(&self) -> RuntimeBalances

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RuntimeBalances

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RuntimeBalances

fn default() -> RuntimeBalances

Returns the “default value” for a type.

impl Index<&AssetId> for RuntimeBalances

type Output = u64

The returned type after indexing.

fn index(&self, index: &AssetId) -> &Self::Output

Performs the indexing (container[index]) operation.

impl PartialEq for RuntimeBalances

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<InitialBalances> for RuntimeBalances

type Error = ValidityError

The type returned in the event of a conversion error.

fn try_from(initial_balances: InitialBalances) -> Result<Self, ValidityError>

Performs the conversion.