Enum wasmparser::ValType

pub enum ValType {
    I32,
    I64,
    F32,
    F64,
    V128,
    Ref(RefType),
}

Represents the types of values in a WebAssembly module.

Variants

I32

The value type is i32.

I64

The value type is i64.

F32

The value type is f32.

F64

The value type is f64.

V128

The value type is v128.

Ref(RefType)

The value type is a reference.

Implementations

impl ValType

pub const FUNCREF: ValType = _

Alias for the wasm funcref type.

pub const EXTERNREF: ValType = _

Alias for the wasm externref type.

pub const EXNREF: ValType = _

Alias for the wasm exnref type.

pub const CONTREF: ValType = _

Alias for the wasm contref type.

pub fn is_reference_type(&self) -> bool

Returns whether this value type is a “reference type”.

Only reference types are allowed in tables, for example, and with some instructions. Current reference types include funcref and externref.

pub fn as_reference_type(&self) -> Option<RefType>

Get the underlying reference type, if any.

pub fn is_defaultable(&self) -> bool

Whether the type is defaultable, i.e. it is not a non-nullable reference type.

Trait Implementations

impl Clone for ValType

fn clone(&self) -> ValType

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ValType

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

Formats the value using the given formatter.

impl Display for ValType

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

Formats the value using the given formatter.

impl From<RefType> for ValType

fn from(ty: RefType) -> ValType

Converts to this type from the input type.

impl<'a> FromReader<'a> for ValType

fn from_reader(reader: &mut BinaryReader<'a>) -> Result<Self>

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

impl Hash for ValType

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 ValType

fn cmp(&self, other: &ValType) -> 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 + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for ValType

fn eq(&self, other: &ValType) -> 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 ValType

fn partial_cmp(&self, other: &ValType) -> 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 Copy for ValType

impl Eq for ValType

impl StructuralPartialEq for ValType