Enum wasmer_types::Value

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pub enum Value<T> {
    I32(i32),
    I64(i64),
    F32(f32),
    F64(f64),
    ExternRef(ExternRef),
    FuncRef(Option<T>),
    V128(u128),
}

Expand description

Possible runtime values that a WebAssembly module can either consume or produce.

Variants

`I32(i32)`

A 32-bit integer.

In Wasm integers are sign-agnostic, i.e. this can either be signed or unsigned.

`I64(i64)`

A 64-bit integer.

In Wasm integers are sign-agnostic, i.e. this can either be signed or unsigned.

`F32(f32)`

A 32-bit float.

`F64(f64)`

A 64-bit float.

`ExternRef(ExternRef)`

An externref value which can hold opaque data to the wasm instance itself.

Note that this is a nullable value as well.

`FuncRef(Option<T>)`

A first-class reference to a WebAssembly function.

`V128(u128)`

A 128-bit number

Implementations

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impl<T> Value<T> where
T: WasmValueType,

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pub fn null() -> Self

Returns a null externref value.

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pub fn ty(&self) -> Type

Returns the corresponding Type for this Value.

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pub unsafe fn write_value_to(&self, p: *mut i128)

Writes it’s value to a given pointer

Safety

p must be:

Sufficiently aligned for the Rust equivalent of the type in self
Non-null and pointing to valid, mutable memory

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pub unsafe fn read_value_from(store: &dyn Any, p: *const i128, ty: Type) -> Self

Gets a Value given a pointer and a Type

Safety

p must be:

Properly aligned to the specified ty’s Rust equivalent
Non-null and pointing to valid memory

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pub fn i32(&self) -> Option<i32>

Attempt to access the underlying value of this Value, returning None if it is not the correct type.

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pub fn unwrap_i32(&self) -> i32

Returns the underlying value of this Value, panicking if it’s the wrong type.

Panics

Panics if self is not of the right type.

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pub fn i64(&self) -> Option<i64>

Attempt to access the underlying value of this Value, returning None if it is not the correct type.

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pub fn unwrap_i64(&self) -> i64

Returns the underlying value of this Value, panicking if it’s the wrong type.

Panics

Panics if self is not of the right type.

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pub fn f32(&self) -> Option<f32>

Attempt to access the underlying value of this Value, returning None if it is not the correct type.

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pub fn unwrap_f32(&self) -> f32

Returns the underlying value of this Value, panicking if it’s the wrong type.

Panics

Panics if self is not of the right type.

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pub fn f64(&self) -> Option<f64>

Attempt to access the underlying value of this Value, returning None if it is not the correct type.

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pub fn unwrap_f64(&self) -> f64

Returns the underlying value of this Value, panicking if it’s the wrong type.

Panics

Panics if self is not of the right type.

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pub fn externref(&self) -> Option<ExternRef>

Attempt to access the underlying value of this Value, returning None if it is not the correct type.

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pub fn unwrap_externref(&self) -> ExternRef

Returns the underlying value of this Value, panicking if it’s the wrong type.

Panics

Panics if self is not of the right type.

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pub fn funcref(&self) -> Option<&Option<T>>

Attempt to access the underlying value of this Value, returning None if it is not the correct type.

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pub fn unwrap_funcref(&self) -> &Option<T>

Returns the underlying value of this Value, panicking if it’s the wrong type.

Panics

Panics if self is not of the right type.

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pub fn v128(&self) -> Option<u128>

Attempt to access the underlying value of this Value, returning None if it is not the correct type.

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pub fn unwrap_v128(&self) -> u128

Returns the underlying value of this Value, panicking if it’s the wrong type.

Panics

Panics if self is not of the right type.

Trait Implementations

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impl<T: Clone> Clone for Value<T>

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fn clone(&self) -> Value<T>

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<T> Debug for Value<T> where
T: WasmValueType,

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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<T> From<ExternRef> for Value<T> where
T: WasmValueType,

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fn from(val: ExternRef) -> Self

Converts to this type from the input type.

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impl<T> From<f32> for Value<T> where
T: WasmValueType,

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fn from(val: f32) -> Self

Converts to this type from the input type.

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impl<T> From<f64> for Value<T> where
T: WasmValueType,

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fn from(val: f64) -> Self

Converts to this type from the input type.

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impl<T> From<i32> for Value<T> where
T: WasmValueType,

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fn from(val: i32) -> Self

Converts to this type from the input type.

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impl<T> From<i64> for Value<T> where
T: WasmValueType,

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fn from(val: i64) -> Self

Converts to this type from the input type.

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impl<T> From<u32> for Value<T> where
T: WasmValueType,

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fn from(val: u32) -> Self

Converts to this type from the input type.

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impl<T> From<u64> for Value<T> where
T: WasmValueType,

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fn from(val: u64) -> Self

Converts to this type from the input type.

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impl<T: PartialEq> PartialEq<Value<T>> for Value<T>

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

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

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

This method tests for !=.

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impl<T> ToString for Value<T> where
T: WasmValueType,

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fn to_string(&self) -> String

Converts the given value to a String. Read more

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impl<T> TryFrom<Value<T>> for i32 where
T: WasmValueType,

type Error = &'static str

The type returned in the event of a conversion error.

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fn try_from(value: Value<T>) -> Result<Self, Self::Error>

Performs the conversion.

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impl<T> TryFrom<Value<T>> for u32 where
T: WasmValueType,

type Error = &'static str

The type returned in the event of a conversion error.

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fn try_from(value: Value<T>) -> Result<Self, Self::Error>

Performs the conversion.

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impl<T> TryFrom<Value<T>> for i64 where
T: WasmValueType,

type Error = &'static str

The type returned in the event of a conversion error.

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fn try_from(value: Value<T>) -> Result<Self, Self::Error>

Performs the conversion.

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impl<T> TryFrom<Value<T>> for u64 where
T: WasmValueType,

type Error = &'static str

The type returned in the event of a conversion error.

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fn try_from(value: Value<T>) -> Result<Self, Self::Error>

Performs the conversion.

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impl<T> TryFrom<Value<T>> for f32 where
T: WasmValueType,

type Error = &'static str

The type returned in the event of a conversion error.

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fn try_from(value: Value<T>) -> Result<Self, Self::Error>

Performs the conversion.

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impl<T> TryFrom<Value<T>> for f64 where
T: WasmValueType,

type Error = &'static str

The type returned in the event of a conversion error.

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fn try_from(value: Value<T>) -> Result<Self, Self::Error>

Performs the conversion.

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impl<T> StructuralPartialEq for Value<T>

Auto Trait Implementations

impl<T> !RefUnwindSafe for Value<T>

impl<T> !Send for Value<T>

impl<T> !Sync for Value<T>

impl<T> Unpin for Value<T> where
T: Unpin,

impl<T> !UnwindSafe for Value<T>

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> ArchivePointee for T

type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.

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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

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

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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, 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> 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)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

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.

Enum wasmer_types::Value

Variants

I32(i32)

I64(i64)

F32(f32)

F64(f64)

ExternRef(ExternRef)

FuncRef(Option<T>)

V128(u128)

Implementations

impl<T> Value<T> where T: WasmValueType,

pub fn null() -> Self

pub fn ty(&self) -> Type

pub unsafe fn write_value_to(&self, p: *mut i128)

pub unsafe fn read_value_from(store: &dyn Any, p: *const i128, ty: Type) -> Self

pub fn i32(&self) -> Option<i32>

pub fn unwrap_i32(&self) -> i32

pub fn i64(&self) -> Option<i64>

pub fn unwrap_i64(&self) -> i64

pub fn f32(&self) -> Option<f32>

pub fn unwrap_f32(&self) -> f32

pub fn f64(&self) -> Option<f64>

pub fn unwrap_f64(&self) -> f64

pub fn externref(&self) -> Option<ExternRef>

pub fn unwrap_externref(&self) -> ExternRef

pub fn funcref(&self) -> Option<&Option<T>>

pub fn unwrap_funcref(&self) -> &Option<T>

pub fn v128(&self) -> Option<u128>

pub fn unwrap_v128(&self) -> u128

Trait Implementations

impl<T: Clone> Clone for Value<T>

fn clone(&self) -> Value<T>

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

impl<T> Debug for Value<T> where T: WasmValueType,

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

impl<T> From<ExternRef> for Value<T> where T: WasmValueType,

fn from(val: ExternRef) -> Self

impl<T> From<f32> for Value<T> where T: WasmValueType,

fn from(val: f32) -> Self

impl<T> From<f64> for Value<T> where T: WasmValueType,

fn from(val: f64) -> Self

impl<T> From<i32> for Value<T> where T: WasmValueType,

fn from(val: i32) -> Self

impl<T> From<i64> for Value<T> where T: WasmValueType,

fn from(val: i64) -> Self

impl<T> From<u32> for Value<T> where T: WasmValueType,

fn from(val: u32) -> Self

impl<T> From<u64> for Value<T> where T: WasmValueType,

fn from(val: u64) -> Self

impl<T: PartialEq> PartialEq<Value<T>> for Value<T>

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

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

impl<T> ToString for Value<T> where T: WasmValueType,

fn to_string(&self) -> String

impl<T> TryFrom<Value<T>> for i32 where T: WasmValueType,

type Error = &'static str

fn try_from(value: Value<T>) -> Result<Self, Self::Error>

impl<T> TryFrom<Value<T>> for u32 where T: WasmValueType,

type Error = &'static str

fn try_from(value: Value<T>) -> Result<Self, Self::Error>

impl<T> TryFrom<Value<T>> for i64 where T: WasmValueType,

type Error = &'static str

fn try_from(value: Value<T>) -> Result<Self, Self::Error>

impl<T> TryFrom<Value<T>> for u64 where T: WasmValueType,

type Error = &'static str

fn try_from(value: Value<T>) -> Result<Self, Self::Error>

impl<T> TryFrom<Value<T>> for f32 where T: WasmValueType,

type Error = &'static str

fn try_from(value: Value<T>) -> Result<Self, Self::Error>

impl<T> TryFrom<Value<T>> for f64 where T: WasmValueType,

type Error = &'static str

fn try_from(value: Value<T>) -> Result<Self, Self::Error>

impl<T> StructuralPartialEq for Value<T>

Auto Trait Implementations

impl<T> !RefUnwindSafe for Value<T>

impl<T> !Send for Value<T>

impl<T> !Sync for Value<T>

impl<T> Unpin for Value<T> where T: Unpin,

impl<T> !UnwindSafe for Value<T>

Blanket Implementations

`I32(i32)`

`I64(i64)`

`F32(f32)`

`F64(f64)`

`ExternRef(ExternRef)`

`FuncRef(Option<T>)`

`V128(u128)`

impl<T> Value<T> where
T: WasmValueType,

impl<T> Debug for Value<T> where
T: WasmValueType,

impl<T> From<ExternRef> for Value<T> where
T: WasmValueType,

impl<T> From<f32> for Value<T> where
T: WasmValueType,

impl<T> From<f64> for Value<T> where
T: WasmValueType,

impl<T> From<i32> for Value<T> where
T: WasmValueType,

impl<T> From<i64> for Value<T> where
T: WasmValueType,

impl<T> From<u32> for Value<T> where
T: WasmValueType,

impl<T> From<u64> for Value<T> where
T: WasmValueType,

impl<T> ToString for Value<T> where
T: WasmValueType,

impl<T> TryFrom<Value<T>> for i32 where
T: WasmValueType,

impl<T> TryFrom<Value<T>> for u32 where
T: WasmValueType,

impl<T> TryFrom<Value<T>> for i64 where
T: WasmValueType,

impl<T> TryFrom<Value<T>> for u64 where
T: WasmValueType,

impl<T> TryFrom<Value<T>> for f32 where
T: WasmValueType,

impl<T> TryFrom<Value<T>> for f64 where
T: WasmValueType,

impl<T> Unpin for Value<T> where
T: Unpin,

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>,