[−][src]Enum wasmtime::Val
Possible runtime values that a WebAssembly module can either consume or produce.
Variants
I32(i32)
A 32-bit integer
I64(i64)
A 64-bit integer
F32(u32)
A 32-bit float.
Note that the raw bits of the float are stored here, and you can use
f32::from_bits
to create an f32
value.
F64(u64)
A 64-bit float.
Note that the raw bits of the float are stored here, and you can use
f64::from_bits
to create an f64
value.
An externref
value which can hold opaque data to the wasm instance itself.
FuncRef(Func)
A first-class reference to a WebAssembly function.
V128(u128)
A 128-bit number
Implementations
impl Val
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pub fn null() -> Val
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Returns a null externref
value.
pub fn ty(&self) -> ValType
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Returns the corresponding ValType
for this Val
.
pub fn i32(&self) -> Option<i32>
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Attempt to access the underlying value of this Val
, returning
None
if it is not the correct type.
pub fn unwrap_i32(&self) -> i32
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Returns the underlying value of this Val
, panicking if it's the
wrong type.
Panics
Panics if self
is not of the right type.
pub fn i64(&self) -> Option<i64>
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Attempt to access the underlying value of this Val
, returning
None
if it is not the correct type.
pub fn unwrap_i64(&self) -> i64
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Returns the underlying value of this Val
, panicking if it's the
wrong type.
Panics
Panics if self
is not of the right type.
pub fn f32(&self) -> Option<f32>
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Attempt to access the underlying value of this Val
, returning
None
if it is not the correct type.
pub fn unwrap_f32(&self) -> f32
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Returns the underlying value of this Val
, panicking if it's the
wrong type.
Panics
Panics if self
is not of the right type.
pub fn f64(&self) -> Option<f64>
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Attempt to access the underlying value of this Val
, returning
None
if it is not the correct type.
pub fn unwrap_f64(&self) -> f64
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Returns the underlying value of this Val
, panicking if it's the
wrong type.
Panics
Panics if self
is not of the right type.
pub fn funcref(&self) -> Option<&Func>
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Attempt to access the underlying value of this Val
, returning
None
if it is not the correct type.
pub fn unwrap_funcref(&self) -> &Func
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Returns the underlying value of this Val
, panicking if it's the
wrong type.
Panics
Panics if self
is not of the right type.
pub fn v128(&self) -> Option<u128>
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Attempt to access the underlying value of this Val
, returning
None
if it is not the correct type.
pub fn unwrap_v128(&self) -> u128
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Returns the underlying value of this Val
, panicking if it's the
wrong type.
Panics
Panics if self
is not of the right type.
pub fn externref(&self) -> Option<Option<ExternRef>>
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Attempt to access the underlying externref
value of this Val
.
If this is not an externref
, then None
is returned.
If this is a null externref
, then Some(None)
is returned.
If this is a non-null externref
, then Some(Some(..))
is returned.
pub fn unwrap_externref(&self) -> Option<ExternRef>
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Returns the underlying externref
value of this Val
, panicking if it's the
wrong type.
If this is a null externref
, then None
is returned.
If this is a non-null externref
, then Some(..)
is returned.
Panics
Panics if self
is not a (nullable) externref
.
Trait Implementations
impl Clone for Val
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impl Debug for Val
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impl From<ExternRef> for Val
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impl From<Func> for Val
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impl From<Option<ExternRef>> for Val
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impl From<f32> for Val
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impl From<f64> for Val
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impl From<i32> for Val
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impl From<i64> for Val
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Auto Trait Implementations
impl !RefUnwindSafe for Val
impl !Send for Val
impl !Sync for Val
impl Unpin for Val
impl !UnwindSafe for Val
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> Same<T> for T
type Output = T
Should always be Self
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,