Enum wasm_opt::Feature

pub enum Feature {
    None,
    Atomics,
    MutableGlobals,
    TruncSat,
    Simd,
    BulkMemory,
    SignExt,
    ExceptionHandling,
    TailCall,
    ReferenceTypes,
    Multivalue,
    Gc,
    Memory64,
    GcNnLocals,
    RelaxedSimd,
    ExtendedConst,
    Strings,
    MultiMemories,
    Mvp,
    Default,
    All,
    AllPossible,
}

Optional wasm features.

The Feature::Mvp feature represents the original spec. Other features are post-MVP, some specified and implemented in all engines, some specified but not implemented, some experimental.

See the WebAssembly roadmap for an indication of which features can be used where.

Variants

None

None.

Atomics

Atomics.

Specification.

MutableGlobals

Import and export of mutable globals.

Specification.

TruncSat

Simd

Fixed-width SIMD.

Specification.

BulkMemory

Bulk memory operations.

Specification.

SignExt

Sign extension operations.

Specification.

ExceptionHandling

Exception handling.

Specification.

TailCall

Tail calls.

Specification.

ReferenceTypes

Reference types.

Specification.

Multivalue

Multi-value.

Specification

Gc

Memory64

Large memory.

Specification.

GcNnLocals

RelaxedSimd

Relaxed SIMD.

Specification.

ExtendedConst

Extended constant expressions.

Specification.

Strings

MultiMemories

Multiple memories.

Specification.

Mvp

The original WebAssembly specification.

It has the same value as None.

Default

The default feature set.

Includes Feature::SignExt and Feature::MutableGlobals.

All

All features, excluding Feature::GcNnLocals.

AllPossible

All features.

Trait Implementations

impl Clone for Feature

fn clone(&self) -> Feature

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Feature

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

Formats the value using the given formatter.

impl FromStr for Feature

type Err = ParseError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Feature, <Self as FromStr>::Err>

Parses a string s to return a value of this type.

impl Hash for Feature

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<Feature> for Feature

fn eq(&self, other: &Feature) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<&str> for Feature

type Error = ParseError

The type returned in the event of a conversion error.

fn try_from(s: &str) -> Result<Feature, <Self as TryFrom<&str>>::Error>

Performs the conversion.

impl Copy for Feature

impl Eq for Feature

impl StructuralEq for Feature

impl StructuralPartialEq for Feature