Struct cml_core_wasm::metadata::Metadata

pub struct Metadata(/* private fields */);

Implementations

impl Metadata

pub fn new() -> Self

pub fn len(&self) -> usize

How many metadatum labels there are.

pub fn set( &mut self, key: TransactionMetadatumLabel, value: &TransactionMetadatum )

Replaces all metadatums of a given label, if any exist.

pub fn get( &self, label: TransactionMetadatumLabel ) -> Option<TransactionMetadatum>

Gets the Metadatum corresponding to a given label, if it exists. Note: In the case of duplicate labels this only returns the first metadatum. This is an extremely rare occurence on-chain but can happen.

pub fn get_all( &self, label: TransactionMetadatumLabel ) -> Option<TransactionMetadatumList>

In the extremely unlikely situation there are duplicate labels, this gets all of a single label

pub fn labels(&self) -> TransactionMetadatumLabels

Trait Implementations

impl AsMut<Metadata> for Metadata

fn as_mut(&mut self) -> &mut Metadata

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

impl AsRef<Metadata> for Metadata

fn as_ref(&self) -> &Metadata

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

impl Clone for Metadata

fn clone(&self) -> Metadata

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Metadata

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

Formats the value using the given formatter.

impl From<Metadata> for JsValue

fn from(value: Metadata) -> Self

Converts to this type from the input type.

impl From<Metadata> for Metadata

fn from(native: Metadata) -> Self

Converts to this type from the input type.

impl FromWasmAbi for Metadata

type Abi = u32

The wasm ABI type that this converts from when coming back out from the ABI boundary.

unsafe fn from_abi(js: u32) -> Self

Recover a Self from Self::Abi.

impl Into<Metadata> for Metadata

fn into(self) -> Metadata

Converts this type into the (usually inferred) input type.

impl IntoWasmAbi for Metadata

type Abi = u32

The wasm ABI type that this converts into when crossing the ABI boundary.

fn into_abi(self) -> u32

Convert self into Self::Abi so that it can be sent across the wasm ABI boundary.

impl OptionFromWasmAbi for Metadata

fn is_none(abi: &Self::Abi) -> bool

Tests whether the argument is a “none” instance. If so it will be deserialized as None, and otherwise it will be passed to FromWasmAbi.

impl OptionIntoWasmAbi for Metadata

fn none() -> Self::Abi

Returns an ABI instance indicating “none”, which JS will interpret as the None branch of this option.

impl RefFromWasmAbi for Metadata

type Abi = u32

The wasm ABI type references to Self are recovered from.

type Anchor = Ref<'static, Metadata>

The type that holds the reference to Self for the duration of the invocation of the function that has an &Self parameter. This is required to ensure that the lifetimes don’t persist beyond one function call, and so that they remain anonymous.

unsafe fn ref_from_abi(js: Self::Abi) -> Self::Anchor

Recover a Self::Anchor from Self::Abi.

impl RefMutFromWasmAbi for Metadata

type Abi = u32

Same as RefFromWasmAbi::Abi

type Anchor = RefMut<'static, Metadata>

Same as RefFromWasmAbi::Anchor

unsafe fn ref_mut_from_abi(js: Self::Abi) -> Self::Anchor

Same as RefFromWasmAbi::ref_from_abi

impl WasmDescribe for Metadata

fn describe()