Struct wasmtime_environ::WasmRefType

pub struct WasmRefType {
    pub nullable: bool,
    pub heap_type: WasmHeapType,
}

WebAssembly reference type – equivalent of wasmparser’s RefType

Fields

nullable: bool

Whether or not this reference is nullable.

heap_type: WasmHeapType

The heap type that this reference contains.

Implementations

impl WasmRefType

pub const EXTERNREF: WasmRefType = _

Shorthand for externref

pub const FUNCREF: WasmRefType = _

Shorthand for funcref

pub fn is_vmgcref_type(&self) -> bool

Is this a type that is represented as a VMGcRef?

pub fn is_vmgcref_type_and_not_i31(&self) -> bool

Is this a type that is represented as a VMGcRef and is additionally not an i31?

That is, is this a a type that actually refers to an object allocated in a GC heap?

Trait Implementations

impl Clone for WasmRefType

fn clone(&self) -> WasmRefType

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for WasmRefType

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for WasmRefType

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for WasmRefType

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

Formats the value using the given formatter.

impl Hash for WasmRefType

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for WasmRefType

fn eq(&self, other: &WasmRefType) -> 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 Serialize for WasmRefType

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TypeTrace for WasmRefType

fn trace<F, E>(&self, func: &mut F) -> Result<(), E>

where F: FnMut(EngineOrModuleTypeIndex) -> Result<(), E>,

Visit each edge.

fn trace_mut<F, E>(&mut self, func: &mut F) -> Result<(), E>

where F: FnMut(&mut EngineOrModuleTypeIndex) -> Result<(), E>,

Visit each edge, mutably.

fn trace_engine_indices<F, E>(&self, func: &mut F) -> Result<(), E>

where F: FnMut(VMSharedTypeIndex) -> Result<(), E>,

Trace all VMSharedTypeIndex edges, ignoring other edges.

fn canonicalize_for_runtime_usage<F>(&mut self, module_to_engine: &mut F)

where F: FnMut(ModuleInternedTypeIndex) -> VMSharedTypeIndex,

Canonicalize self by rewriting all type references inside self from module-level interned type indices to engine-level interned type indices.

fn is_canonicalized_for_runtime_usage(&self) -> bool

Is this type canonicalized for runtime usage?

fn canonicalize_for_hash_consing<F>( &mut self, rec_group_range: Range<ModuleInternedTypeIndex>, module_to_engine: &mut F, )

where F: FnMut(ModuleInternedTypeIndex) -> VMSharedTypeIndex,

Canonicalize self by rewriting all type references inside self from module-level interned type indices to either engine-level interned type indices or recgroup-relative indices.

fn is_canonicalized_for_hash_consing(&self) -> bool

Is this type canonicalized for hash consing?

impl Copy for WasmRefType

impl Eq for WasmRefType

impl StructuralPartialEq for WasmRefType