Struct wasmer_compiler::Features

pub struct Features {
    pub threads: bool,
    pub reference_types: bool,
    pub simd: bool,
    pub bulk_memory: bool,
    pub multi_value: bool,
    pub tail_call: bool,
    pub module_linking: bool,
    pub multi_memory: bool,
    pub memory64: bool,
    pub exceptions: bool,
    pub relaxed_simd: bool,
    pub extended_const: bool,
}
Expand description

Controls which experimental features will be enabled. Features usually have a corresponding WebAssembly proposal.

Fields§

§threads: bool

Threads proposal should be enabled

§reference_types: bool

Reference Types proposal should be enabled

§simd: bool

SIMD proposal should be enabled

§bulk_memory: bool

Bulk Memory proposal should be enabled

§multi_value: bool

Multi Value proposal should be enabled

§tail_call: bool

Tail call proposal should be enabled

§module_linking: bool

Module Linking proposal should be enabled

§multi_memory: bool

Multi Memory proposal should be enabled

§memory64: bool

64-bit Memory proposal should be enabled

§exceptions: bool

Wasm exceptions proposal should be enabled

§relaxed_simd: bool

Relaxed SIMD proposal should be enabled

§extended_const: bool

Extended constant expressions proposal should be enabled

Implementations§

§

impl Features

pub fn new() -> Features

Create a new feature

pub fn threads(&mut self, enable: bool) -> &mut Features

Configures whether the WebAssembly threads proposal will be enabled.

The WebAssembly threads proposal is not currently fully standardized and is undergoing development. Support for this feature can be enabled through this method for appropriate WebAssembly modules.

This feature gates items such as shared memories and atomic instructions.

This is false by default.

pub fn reference_types(&mut self, enable: bool) -> &mut Features

Configures whether the WebAssembly reference types proposal will be enabled.

The WebAssembly reference types proposal is now fully standardized and enabled by default.

This feature gates items such as the externref type and multiple tables being in a module. Note that enabling the reference types feature will also enable the bulk memory feature.

This is true by default.

pub fn simd(&mut self, enable: bool) -> &mut Features

Configures whether the WebAssembly SIMD proposal will be enabled.

The WebAssembly SIMD proposal is not currently fully standardized and is undergoing development. Support for this feature can be enabled through this method for appropriate WebAssembly modules.

This feature gates items such as the v128 type and all of its operators being in a module.

This is false by default.

pub fn bulk_memory(&mut self, enable: bool) -> &mut Features

Configures whether the WebAssembly bulk memory operations proposal will be enabled.

The WebAssembly bulk memory operations proposal is now fully standardized and enabled by default.

This feature gates items such as the memory.copy instruction, passive data/table segments, etc, being in a module.

This is true by default.

pub fn multi_value(&mut self, enable: bool) -> &mut Features

Configures whether the WebAssembly multi-value proposal will be enabled.

The WebAssembly multi-value proposal is now fully standardized and enabled by default, except with the singlepass compiler which does not support it.

This feature gates functions and blocks returning multiple values in a module, for example.

This is true by default.

pub fn tail_call(&mut self, enable: bool) -> &mut Features

Configures whether the WebAssembly tail-call proposal will be enabled.

The WebAssembly tail-call proposal is not currently fully standardized and is undergoing development. Support for this feature can be enabled through this method for appropriate WebAssembly modules.

This feature gates tail-call functions in WebAssembly.

This is false by default.

pub fn module_linking(&mut self, enable: bool) -> &mut Features

Configures whether the WebAssembly module linking proposal will be enabled.

The WebAssembly module linking proposal is not currently fully standardized and is undergoing development. Support for this feature can be enabled through this method for appropriate WebAssembly modules.

This feature allows WebAssembly modules to define, import and export modules and instances.

This is false by default.

pub fn multi_memory(&mut self, enable: bool) -> &mut Features

Configures whether the WebAssembly multi-memory proposal will be enabled.

The WebAssembly multi-memory proposal is not currently fully standardized and is undergoing development. Support for this feature can be enabled through this method for appropriate WebAssembly modules.

This feature adds the ability to use multiple memories within a single Wasm module.

This is false by default.

pub fn memory64(&mut self, enable: bool) -> &mut Features

Configures whether the WebAssembly 64-bit memory proposal will be enabled.

The WebAssembly 64-bit memory proposal is not currently fully standardized and is undergoing development. Support for this feature can be enabled through this method for appropriate WebAssembly modules.

This feature gates support for linear memory of sizes larger than 2^32 bits.

This is false by default.

Trait Implementations§

§

impl Archive for Features
where bool: Archive,

§

type Archived = ArchivedFeatures

The archived representation of this type. Read more
§

type Resolver = FeaturesResolver

The resolver for this type. It must contain all the additional information from serializing needed to make the archived type from the normal type.
§

const COPY_OPTIMIZATION: CopyOptimization<Features> = _

An optimization flag that allows the bytes of this type to be copied directly to a writer instead of calling serialize. Read more
§

fn resolve( &self, resolver: <Features as Archive>::Resolver, out: Place<<Features as Archive>::Archived>, )

Creates the archived version of this value at the given position and writes it to the given output. Read more
§

impl Clone for Features

§

fn clone(&self) -> Features

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
§

impl Debug for Features

§

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

Formats the value using the given formatter. Read more
§

impl Default for Features

§

fn default() -> Features

Returns the “default value” for a type. Read more
§

impl<'de> Deserialize<'de> for Features

§

fn deserialize<__D>( __deserializer: __D, ) -> Result<Features, <__D as Deserializer<'de>>::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
§

impl<__D> Deserialize<Features, __D> for <Features as Archive>::Archived
where __D: Fallible + ?Sized, bool: Archive, <bool as Archive>::Archived: Deserialize<bool, __D>,

§

fn deserialize( &self, deserializer: &mut __D, ) -> Result<Features, <__D as Fallible>::Error>

Deserializes using the given deserializer
§

impl PartialEq<ArchivedFeatures> for Features
where bool: Archive, <bool as Archive>::Archived: PartialEq<bool>,

§

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

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

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 PartialEq for Features

§

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

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

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<__S> Serialize<__S> for Features
where __S: Fallible + ?Sized, bool: Serialize<__S>,

§

fn serialize( &self, serializer: &mut __S, ) -> Result<<Features as Archive>::Resolver, <__S as Fallible>::Error>

Writes the dependencies for the object and returns a resolver that can create the archived type.
§

impl Serialize for Features

§

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

Serialize this value into the given Serde serializer. Read more
§

impl Eq for Features

§

impl StructuralPartialEq for Features

Auto Trait Implementations§

Blanket Implementations§

source§

impl<T> Any for T
where T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
§

impl<T> ArchivePointee for T

§

type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.
§

fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata

Converts some archived metadata to the pointer metadata for itself.
§

impl<T> ArchiveUnsized for T
where T: Archive,

§

type Archived = <T as Archive>::Archived

The archived counterpart of this type. Unlike Archive, it may be unsized. Read more
§

fn archived_metadata( &self, ) -> <<T as ArchiveUnsized>::Archived as ArchivePointee>::ArchivedMetadata

Creates the archived version of the metadata for this value.
source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> CloneToUninit for T
where T: Clone,

source§

default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

§

fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

§

fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

§

fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for T
where U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

§

impl<T> LayoutRaw for T

§

fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>

Returns the layout of the type.
§

impl<T> Pointee for T

§

type Metadata = ()

The metadata type for pointers and references to this type.
source§

impl<T> Same for T

§

type Output = T

Should always be Self
§

impl<T, S> SerializeUnsized<S> for T
where T: Serialize<S>, S: Fallible + Writer + ?Sized,

§

fn serialize_unsized( &self, serializer: &mut S, ) -> Result<usize, <S as Fallible>::Error>

Writes the object and returns the position of the archived type.
source§

impl<T> ToOwned for T
where T: Clone,

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<T> Upcastable for T
where T: Any + Send + Sync + 'static,

source§

fn upcast_any_ref(&self) -> &(dyn Any + 'static)

upcast ref
source§

fn upcast_any_mut(&mut self) -> &mut (dyn Any + 'static)

upcast mut ref
source§

fn upcast_any_box(self: Box<T>) -> Box<dyn Any>

upcast boxed dyn
source§

impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,