Enum wasmtime_environ::wasmparser::AbstractHeapType

pub enum AbstractHeapType {
    Func,
    Extern,
    Any,
    None,
    NoExtern,
    NoFunc,
    Eq,
    Struct,
    Array,
    I31,
    Exn,
    NoExn,
}

An abstract heap type.

Variants

Func

The abstract, untyped (any) function.

Introduced in the references-types proposal.

Extern

The abstract, external heap type.

Introduced in the references-types proposal.

Any

The abstract any heap type.

The common supertype (a.k.a. top) of all internal types.

Introduced in the GC proposal.

None

The abstract none heap type.

The common subtype (a.k.a. bottom) of all internal types.

Introduced in the GC proposal.

NoExtern

The abstract noextern heap type.

The common subtype (a.k.a. bottom) of all external types.

Introduced in the GC proposal.

NoFunc

The abstract nofunc heap type.

The common subtype (a.k.a. bottom) of all function types.

Introduced in the GC proposal.

Eq

The abstract eq heap type.

The common supertype of all heap types on which the ref.eq instruction is allowed.

Introduced in the GC proposal.

Struct

The abstract struct heap type.

The common supertype of all struct types.

Introduced in the GC proposal.

Array

The abstract array heap type.

The common supertype of all array types.

Introduced in the GC proposal.

I31

The abstract i31 heap type.

It is not expected that Wasm runtimes actually store these values on the heap, but unbox them inline into the i31refs themselves instead.

Introduced in the GC proposal.

Exn

The abstraction exception heap type.

Introduced in the exception-handling proposal.

NoExn

The abstract noexn heap type.

The common subtype (a.k.a. bottom) of all exception types.

Introduced in the exception-handling proposal.

Trait Implementations

impl Clone for AbstractHeapType

fn clone(&self) -> AbstractHeapType

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for AbstractHeapType

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

Formats the value using the given formatter.

impl<'a> FromReader<'a> for AbstractHeapType

fn from_reader( reader: &mut BinaryReader<'a>, ) -> Result<AbstractHeapType, BinaryReaderError>

Attempts to read Self from the provided binary reader, returning an error if it is unable to do so.

impl Hash for AbstractHeapType

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

where __H: Hasher,

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 AbstractHeapType

fn eq(&self, other: &AbstractHeapType) -> 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 Copy for AbstractHeapType

impl Eq for AbstractHeapType

impl StructuralPartialEq for AbstractHeapType