Struct wasmi::Global

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#[repr(transparent)]
pub struct Global(_);

Expand description

A Wasm global variable reference.

Implementations

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impl Global

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pub fn new(
    ctx: impl AsContextMut,
    initial_value: Value,
    mutability: Mutability
) -> Self

Creates a new global variable to the store.

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pub fn is_mutable(&self, ctx: impl AsContext) -> bool

Returns true if the global variable is mutable.

Panics

Panics if ctx does not own this Global.

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pub fn value_type(&self, ctx: impl AsContext) -> ValueType

Returns the type of the global variable value.

Panics

Panics if ctx does not own this Global.

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pub fn global_type(&self, ctx: impl AsContext) -> GlobalType

Returns the GlobalType of the global variable.

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pub fn set(
 &self,
 ctx: impl AsContextMut,
 new_value: Value
) -> Result<(), GlobalError>

Sets a new value to the global variable.

Errors

If the global variable is immutable.
If there is a type mismatch between the global variable and the new value.

Panics

Panics if ctx does not own this Global.

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pub fn get(&self, ctx: impl AsContext) -> Value

Returns the current value of the global variable.

Panics

Panics if ctx does not own this Global.

Trait Implementations

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impl Clone for Global

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fn clone(&self) -> Global

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 Global

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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 From<Global> for Extern

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fn from(global: Global) -> Self

Converts to this type from the input type.

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impl Copy for Global

Auto Trait Implementations

impl RefUnwindSafe for Global

impl Send for Global

impl Sync for Global

impl Unpin for Global

impl UnwindSafe for Global

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

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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<T> Downcast for T where
T: Any,

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

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait. Read more

fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait. Read more

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

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s. Read more

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

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s. Read more

impl<T> DowncastSync for T where
T: Any + Send + Sync,

fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send + 'static>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait. Read more

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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, 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.

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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.

Struct wasmi::Global

Implementations

impl Global

pub fn new( ctx: impl AsContextMut, initial_value: Value, mutability: Mutability) -> Self

pub fn is_mutable(&self, ctx: impl AsContext) -> bool

pub fn value_type(&self, ctx: impl AsContext) -> ValueType

pub fn global_type(&self, ctx: impl AsContext) -> GlobalType

pub fn set( &self, ctx: impl AsContextMut, new_value: Value) -> Result<(), GlobalError>

pub fn get(&self, ctx: impl AsContext) -> Value

Trait Implementations

impl Clone for Global

fn clone(&self) -> Global

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

impl Debug for Global

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

impl From<Global> for Extern

fn from(global: Global) -> Self

impl Copy for Global

Auto Trait Implementations

impl RefUnwindSafe for Global

impl Send for Global

impl Sync for Global

impl Unpin for Global

impl UnwindSafe for Global

Blanket Implementations

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

fn type_id(&self) -> TypeId

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<T> Downcast for T where T: Any,

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

fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>

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

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

impl<T> DowncastSync for T where T: Any + Send + Sync,

fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send + 'static>

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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>

pub fn new(
ctx: impl AsContextMut,
initial_value: Value,
mutability: Mutability
) -> Self

pub fn set(
&self,
ctx: impl AsContextMut,
new_value: Value
) -> Result<(), GlobalError>

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

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

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

impl<T> Downcast for T where
T: Any,

impl<T> DowncastSync for T where
T: Any + Send + Sync,

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>,