Enum wasmi::RuntimeValue

source · [−]

pub enum RuntimeValue {
    I32(i32),
    I64(i64),
    F32(F32),
    F64(F64),
}

Expand description

Runtime representation of a value.

Wasm code manipulate values of the four basic value types: integers and floating-point (IEEE 754-2008) data of 32 or 64 bit width each, respectively.

There is no distinction between signed and unsigned integer types. Instead, integers are interpreted by respective operations as either unsigned or signed in two’s complement representation.

Variants

`I32(i32)`

Value of 32-bit signed or unsigned integer.

`I64(i64)`

Value of 64-bit signed or unsigned integer.

`F32(F32)`

Value of 32-bit IEEE 754-2008 floating point number.

`F64(F64)`

Value of 64-bit IEEE 754-2008 floating point number.

Implementations

impl Value

pub fn default(value_type: ValueType) -> Value

Creates new default value of given type.

pub fn decode_f32(val: u32) -> Value

👎 Deprecated:

use F32::from_bits(val).into() instead

Creates new value by interpreting passed u32 as f32.

pub fn decode_f64(val: u64) -> Value

👎 Deprecated:

use F64::from_bits(val).into() instead

Creates new value by interpreting passed u64 as f64.

pub fn value_type(&self) -> ValueType

Get variable type for this value.

pub fn try_into<T>(self) -> Option<T> where
T: FromValue,

Returns T if this particular Value contains appropriate type.

See FromValue for details.

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

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 Value

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

Formats the value using the given formatter. Read more

impl Display for Value

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

Formats the value using the given formatter. Read more

impl From<F32> for Value

fn from(val: F32) -> Value

Converts to this type from the input type.

impl From<F64> for Value

fn from(val: F64) -> Value

Converts to this type from the input type.

impl From<i16> for Value

fn from(val: i16) -> Value

Converts to this type from the input type.

impl From<i32> for Value

fn from(val: i32) -> Value

Converts to this type from the input type.

impl From<i64> for Value

fn from(val: i64) -> Value

Converts to this type from the input type.

impl From<i8> for Value

fn from(val: i8) -> Value

Converts to this type from the input type.

impl From<u16> for Value

fn from(val: u16) -> Value

Converts to this type from the input type.

impl From<u32> for Value

fn from(val: u32) -> Value

Converts to this type from the input type.

impl From<u64> for Value

fn from(val: u64) -> Value

Converts to this type from the input type.

impl From<u8> for Value

fn from(val: u8) -> Value

Converts to this type from the input type.

impl PartialEq<Value> for Value

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

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

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

This method tests for !=.

impl Copy for Value

impl StructuralPartialEq for Value

Auto Trait Implementations

impl RefUnwindSafe for Value

impl Send for Value

impl Sync for Value

impl Unpin for Value

impl UnwindSafe for Value

Blanket Implementations

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

impl<T1> EncodeUntypedSlice for T1 where
T1: Into<UntypedValue>,

fn encode_untyped_slice(
self,
results: &mut [UntypedValue]
) -> Result<(), UntypedError>

Encodes the slice of UntypedValue from the given value of type Self. Read more

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

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

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

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

impl<T> ToString for T where
T: Display + ?Sized,

default fn to_string(&self) -> String

Converts the given value to a String. Read more

impl<T, U> TryFrom<U> 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<U>>::Error>

Performs the conversion.

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.

const: unstable · source

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

Performs the conversion.