Struct wasmer::Exports

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pub struct Exports { /* private fields */ }

Expand description

Exports is a special kind of map that allows easily unwrapping the types of instances.

TODO: add examples of using exports

Implementations

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impl Exports

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pub fn new() -> Self

Creates a new Exports.

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pub fn with_capacity(n: usize) -> Self

Creates a new Exports with capacity n.

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pub fn len(&self) -> usize

Return the number of exports in the Exports map.

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pub fn is_empty(&self) -> bool

Return whether or not there are no exports

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pub fn insert<S, E>(&mut self, name: S, value: E) where
S: Into<String>,
E: Into<Extern>,

Insert a new export into this Exports map.

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pub fn get<'a, T: Exportable<'a>>(
&'a self,
name: &str
) -> Result<&'a T, ExportError>

Get an export given a name.

The get method is specifically made for usage inside of Rust APIs, as we can detect what’s the desired type easily.

If you want to get an export dynamically with type checking please use the following functions: get_func, get_memory, get_table or get_global instead.

If you want to get an export dynamically handling manually type checking manually, please use get_extern.

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pub fn get_global(&self, name: &str) -> Result<&Global, ExportError>

Get an export as a Global.

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pub fn get_memory(&self, name: &str) -> Result<&Memory, ExportError>

Get an export as a Memory.

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pub fn get_table(&self, name: &str) -> Result<&Table, ExportError>

Get an export as a Table.

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pub fn get_function(&self, name: &str) -> Result<&Function, ExportError>

Get an export as a Func.

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pub fn get_native_function<Args, Rets>(
 &self,
 name: &str
) -> Result<NativeFunc<Args, Rets>, ExportError> where
 Args: WasmTypeList,
 Rets: WasmTypeList,

Get an export as a NativeFunc.

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pub fn get_with_generics<'a, T, Args, Rets>(
 &'a self,
 name: &str
) -> Result<T, ExportError> where
 Args: WasmTypeList,
 Rets: WasmTypeList,
 T: ExportableWithGenerics<'a, Args, Rets>,

Hack to get this working with nativefunc too

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pub fn get_with_generics_weak<'a, T, Args, Rets>(
 &'a self,
 name: &str
) -> Result<T, ExportError> where
 Args: WasmTypeList,
 Rets: WasmTypeList,
 T: ExportableWithGenerics<'a, Args, Rets>,

Like get_with_generics but with a WeakReference to the InstanceRef internally. This is useful for passing data into WasmerEnv, for example.

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pub fn get_extern(&self, name: &str) -> Option<&Extern>

Get an export as an Extern.

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pub fn contains<S>(&self, name: S) -> bool where
S: Into<String>,

Returns true if the Exports contains the given export name.

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pub fn iter(
&self
) -> ExportsIterator<'_, impl Iterator<Item = (&String, &Extern )>>ⓘNotable traits for ExportsIterator<'a, I>`impl<'a, I> Iterator for ExportsIterator<'a, I> where I: Iterator<Item = (&'a String, &'a Extern)> + Sized, type Item = (&'a String, &'a Extern);`

Get an iterator over the exports.

Trait Implementations

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impl Clone for Exports

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fn clone(&self) -> Exports

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

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impl Debug for Exports

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

Formats the value using the given formatter. Read more

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impl Default for Exports

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fn default() -> Exports

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

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impl FromIterator<(String, Extern )> for Exports

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fn from_iter<I: IntoIterator<Item = (String, Extern )>>(iter: I) -> Self

Creates a value from an iterator. Read more

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impl LikeNamespace for Exports

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fn get_namespace_export(&self, name: &str) -> Option<Export>

Gets an export by name.

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fn get_namespace_exports(&self) -> Vec<(String, Export )>ⓘNotable traits for Vec<u8, A>`impl<A> Write for Vec<u8, A> where A: Allocator,`

Gets all exports in the namespace.

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fn as_exports(&self) -> Option<Exports>

Returns the contents of this namespace as an Exports. Read more

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impl MemoryUsage for Exports

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fn size_of_val(&self, visited: &mut dyn MemoryUsageTracker) -> usize

Returns the size of the referenced value in bytes. Read more

Auto Trait Implementations

impl !RefUnwindSafe for Exports

impl Send for Exports

impl Sync for Exports

impl Unpin for Exports

impl !UnwindSafe for Exports

Blanket Implementations

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

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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.

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

impl<F, W, T, D> Deserialize<With<T, W>, D> for F where
 W: DeserializeWith<F, T, D>,
 D: Fallible + ?Sized,
 F: ?Sized,

fn deserialize(
&self,
deserializer: &mut D
) -> Result<With<T, W>, <D as Fallible>::Error>

Deserializes using the given deserializer

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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

const: unstable · 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> Pointable for T

const ALIGN: usize = mem::align_of::()

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

impl<T> Pointee for T

type Metadata = ()

The type for metadata in pointers and references to Self.

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

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

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

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

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

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

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

upcast ref

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

upcast mut ref

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fn upcast_any_box(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>

upcast boxed dyn

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more

Struct wasmer::Exports

Implementations

impl Exports

pub fn new() -> Self

pub fn with_capacity(n: usize) -> Self

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn insert<S, E>(&mut self, name: S, value: E) where S: Into<String>, E: Into<Extern>,

pub fn get<'a, T: Exportable<'a>>( &'a self, name: &str) -> Result<&'a T, ExportError>

pub fn get_global(&self, name: &str) -> Result<&Global, ExportError>

pub fn get_memory(&self, name: &str) -> Result<&Memory, ExportError>

pub fn get_table(&self, name: &str) -> Result<&Table, ExportError>

pub fn get_function(&self, name: &str) -> Result<&Function, ExportError>

pub fn get_native_function<Args, Rets>( &self, name: &str) -> Result<NativeFunc<Args, Rets>, ExportError> where Args: WasmTypeList, Rets: WasmTypeList,

pub fn get_with_generics<'a, T, Args, Rets>( &'a self, name: &str) -> Result<T, ExportError> where Args: WasmTypeList, Rets: WasmTypeList, T: ExportableWithGenerics<'a, Args, Rets>,

pub fn get_with_generics_weak<'a, T, Args, Rets>( &'a self, name: &str) -> Result<T, ExportError> where Args: WasmTypeList, Rets: WasmTypeList, T: ExportableWithGenerics<'a, Args, Rets>,

pub fn get_extern(&self, name: &str) -> Option<&Extern>

pub fn contains<S>(&self, name: S) -> bool where S: Into<String>,

pub fn iter( &self) -> ExportsIterator<'_, impl Iterator<Item = (&String, &Extern)>>ⓘNotable traits for ExportsIterator<'a, I>impl<'a, I> Iterator for ExportsIterator<'a, I> where I: Iterator<Item = (&'a String, &'a Extern)> + Sized, type Item = (&'a String, &'a Extern);

Trait Implementations

impl Clone for Exports

fn clone(&self) -> Exports

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

impl Debug for Exports

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

impl Default for Exports

fn default() -> Exports

impl FromIterator<(String, Extern)> for Exports

fn from_iter<I: IntoIterator<Item = (String, Extern)>>(iter: I) -> Self

impl LikeNamespace for Exports

fn get_namespace_export(&self, name: &str) -> Option<Export>

fn get_namespace_exports(&self) -> Vec<(String, Export)>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A> where A: Allocator,

fn as_exports(&self) -> Option<Exports>

impl MemoryUsage for Exports

fn size_of_val(&self, visited: &mut dyn MemoryUsageTracker) -> usize

Auto Trait Implementations

impl !RefUnwindSafe for Exports

impl Send for Exports

impl Sync for Exports

impl Unpin for Exports

impl !UnwindSafe for Exports

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> ArchivePointee for T

type ArchivedMetadata = ()

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

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

fn borrow(&self) -> &T

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

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

impl<F, W, T, D> Deserialize<With<T, W>, D> for F where W: DeserializeWith<F, T, D>, D: Fallible + ?Sized, F: ?Sized,

fn deserialize( &self, deserializer: &mut D) -> Result<With<T, W>, <D as Fallible>::Error>

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

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

fn into(self) -> U

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::()

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

impl<T> Pointee for T

type Metadata = ()

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

type Owned = T

fn to_owned(&self) -> T

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

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

type Error = Infallible

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

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

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

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

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

pub fn insert<S, E>(&mut self, name: S, value: E) where
S: Into<String>,
E: Into<Extern>,

pub fn get<'a, T: Exportable<'a>>(
&'a self,
name: &str
) -> Result<&'a T, ExportError>

pub fn get_native_function<Args, Rets>(
&self,
name: &str
) -> Result<NativeFunc<Args, Rets>, ExportError> where
Args: WasmTypeList,
Rets: WasmTypeList,

pub fn get_with_generics<'a, T, Args, Rets>(
&'a self,
name: &str
) -> Result<T, ExportError> where
Args: WasmTypeList,
Rets: WasmTypeList,
T: ExportableWithGenerics<'a, Args, Rets>,

pub fn get_with_generics_weak<'a, T, Args, Rets>(
&'a self,
name: &str
) -> Result<T, ExportError> where
Args: WasmTypeList,
Rets: WasmTypeList,
T: ExportableWithGenerics<'a, Args, Rets>,

pub fn contains<S>(&self, name: S) -> bool where
S: Into<String>,

pub fn iter(
&self
) -> ExportsIterator<'_, impl Iterator<Item = (&String, &Extern )>>ⓘNotable traits for ExportsIterator<'a, I>`impl<'a, I> Iterator for ExportsIterator<'a, I> where I: Iterator<Item = (&'a String, &'a Extern)> + Sized, type Item = (&'a String, &'a Extern);`

impl FromIterator<(String, Extern )> for Exports

fn from_iter<I: IntoIterator<Item = (String, Extern )>>(iter: I) -> Self

fn get_namespace_exports(&self) -> Vec<(String, Export )>ⓘNotable traits for Vec<u8, A>`impl<A> Write for Vec<u8, A> where A: Allocator,`

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

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

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

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

impl<F, W, T, D> Deserialize<With<T, W>, D> for F where
W: DeserializeWith<F, T, D>,
D: Fallible + ?Sized,
F: ?Sized,

fn deserialize(
&self,
deserializer: &mut D
) -> Result<With<T, W>, <D as Fallible>::Error>

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

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

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

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

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

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,