Struct RefType

pub struct RefType {
    pub nullable: bool,
    pub heap_type: HeapType,
}

A reference type.

This is largely part of the function references proposal for WebAssembly but additionally is used by the funcref and externref types. The full generality of this type is only exercised with function-references.

Fields

nullable: bool

heap_type: HeapType

Implementations

impl RefType

pub const ANYREF: RefType = _

Alias for the anyref type in WebAssembly.

pub const EQREF: RefType = _

Alias for the anyref type in WebAssembly.

pub const FUNCREF: RefType = _

Alias for the funcref type in WebAssembly.

pub const EXTERNREF: RefType = _

Alias for the externref type in WebAssembly.

pub const I31REF: RefType = _

Alias for the i31ref type in WebAssembly.

pub const ARRAYREF: RefType = _

Alias for the arrayref type in WebAssembly.

pub const EXNREF: RefType = _

Alias for the exnref type in WebAssembly.

pub fn new_abstract(ty: AbstractHeapType, nullable: bool, shared: bool) -> Self

Create a new abstract reference type.

pub fn nullable(self, nullable: bool) -> Self

Set the nullability of this reference type.

Trait Implementations

impl Clone for RefType

fn clone(&self) -> RefType

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for RefType

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

Formats the value using the given formatter.

impl Encode for RefType

fn encode(&self, sink: &mut Vec<u8>)

Encode the type into the given byte sink.

impl From<RefType> for ValType

fn from(ty: RefType) -> ValType

Converts to this type from the input type.

impl Hash for RefType

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 Ord for RefType

fn cmp(&self, other: &RefType) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for RefType

fn eq(&self, other: &RefType) -> 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 PartialOrd for RefType

fn partial_cmp(&self, other: &RefType) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl TryFrom<RefType> for RefType

Available on crate feature wasmparser only.

type Error = Error

The type returned in the event of a conversion error.

fn try_from(ref_type: RefType) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for RefType

impl Eq for RefType

impl StructuralPartialEq for RefType