Trait Artifact

pub trait Artifact: Send + Sync {
    // Required methods
    fn offsets(&self) -> &VMOffsets;
    fn import_counts(&self) -> &ImportCounts;
    fn functions(&self) -> &BoxedSlice<LocalFunctionIndex, VMLocalFunction>;
    fn passive_elements(&self) -> &BTreeMap<ElemIndex, Box<[FunctionIndex]>>;
    fn element_segments(&self) -> &[OwnedTableInitializer];
    fn data_segments(&self) -> &[OwnedDataInitializer];
    fn globals(&self) -> &[(GlobalType, GlobalInit)];
    fn start_function(&self) -> Option<FunctionIndex>;
    fn export_field(&self, name: &str) -> Option<ExportIndex>;
    fn signatures(&self) -> &[VMSharedSignatureIndex];
    fn function_signature(
        &self,
        index: FunctionIndex,
    ) -> Option<VMSharedSignatureIndex>;
}

A predecesor of a full module Instance.

This type represents parts of a compiled WASM module (Executable) that are pre-allocated in within some Engine’s store.

Some other operations such as linking, relocating and similar may also be performed during constructon of the Artifact, making this type particularly well suited for caching in-memory.

Required Methods

fn offsets(&self) -> &VMOffsets

The information about offsets into the VM context table.

fn import_counts(&self) -> &ImportCounts

The count of imported entities.

fn functions(&self) -> &BoxedSlice<LocalFunctionIndex, VMLocalFunction>

The locally defined functions.

These are published and ready to call.

fn passive_elements(&self) -> &BTreeMap<ElemIndex, Box<[FunctionIndex]>>

Passive table elements.

fn element_segments(&self) -> &[OwnedTableInitializer]

Table initializers.

fn data_segments(&self) -> &[OwnedDataInitializer]

Memory initializers. TODO: consider making it an iterator of DataInitializers instead?

fn globals(&self) -> &[(GlobalType, GlobalInit)]

Passive table elements.

fn start_function(&self) -> Option<FunctionIndex>

The function index to the start function.

fn export_field(&self, name: &str) -> Option<ExportIndex>

Function by export name.

fn signatures(&self) -> &[VMSharedSignatureIndex]

Mapping between module SignatureIndex and VMSharedSignatureIndex.

fn function_signature( &self, index: FunctionIndex, ) -> Option<VMSharedSignatureIndex>

Obtain the function signature for either the import or local definition.

Implementations

impl dyn Artifact

pub fn downcast_arc<T: Artifact + 'static>( self: Arc<Self>, ) -> Result<Arc<T>, Arc<Self>>

Downcast a dynamic Executable object to a concrete implementation of the trait.

Implementors