Struct wasmer::wasm_c_api::value::wasm_val_t

#[repr(C)]
pub struct wasm_val_t {
    pub kind: wasm_valkind_t,
    pub of: wasm_val_inner,
}

A WebAssembly value composed of its type and its value.

Note that wasm.h defines macros to create Wasm values more easily: WASM_I32_VAL, WASM_I64_VAL, WASM_F32_VAL, WASM_F64_VAL, and WASM_REF_VAL.

Example

int main() {
    // Create a 32-bit integer Wasm value.
    wasm_val_t value1 = {
        .kind = WASM_I32,
        .of = { .i32 = 7 },
    };

    // Create the same value with the `wasm.h` macro.
    wasm_val_t value2 = WASM_I32_VAL(7);

    assert(value2.kind == WASM_I32);
    assert(value1.of.i32 == value2.of.i32);

    return 0;
}

Fields

kind: wasm_valkind_t

The kind of the value.

of: wasm_val_inner

The real value.

Trait Implementations

impl Clone for wasm_val_t

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for wasm_val_t

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

Formats the value using the given formatter.

impl Default for wasm_val_t

fn default() -> Self

Returns the “default value” for a type.

impl TryFrom<&Value> for wasm_val_t

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(item: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&wasm_val_t> for Value

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(item: &wasm_val_t) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for wasm_val_t

type Error = &'static str

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<wasm_val_t> for Value

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(item: wasm_val_t) -> Result<Self, Self::Error>

Performs the conversion.