Union wasmtime_runtime::ValRaw

#[repr(C)]
pub union ValRaw {
    /* private fields */
}

A “raw” and unsafe representation of a WebAssembly value.

This is provided for use with the Func::new_unchecked and Func::call_unchecked APIs. In general it’s unlikely you should be using this from Rust, rather using APIs like Func::wrap and TypedFunc::call.

This is notably an “unsafe” way to work with Val and it’s recommended to instead use Val where possible. An important note about this union is that fields are all stored in little-endian format, regardless of the endianness of the host system.

Implementations

impl ValRaw

pub fn i32(i: i32) -> ValRaw

Creates a WebAssembly i32 value

pub fn i64(i: i64) -> ValRaw

Creates a WebAssembly i64 value

Examples found in repository

src/vmcontext.rs (line 1012)

    pub fn u64(i: u64) -> ValRaw {
        ValRaw::i64(i as i64)
    }

pub fn u32(i: u32) -> ValRaw

Creates a WebAssembly i32 value

pub fn u64(i: u64) -> ValRaw

Creates a WebAssembly i64 value

Examples found in repository

src/vmcontext.rs (line 992)

    pub fn i32(i: i32) -> ValRaw {
        // Note that this is intentionally not setting the `i32` field, instead
        // setting the `i64` field with a zero-extended version of `i`. For more
        // information on this see the comments on `Lower for Result` in the
        // `wasmtime` crate. Otherwise though all `ValRaw` constructors are
        // otherwise constrained to guarantee that the initial 64-bits are
        // always initialized.
        ValRaw::u64((i as u32).into())
    }

    /// Creates a WebAssembly `i64` value
    #[inline]
    pub fn i64(i: i64) -> ValRaw {
        ValRaw { i64: i.to_le() }
    }

    /// Creates a WebAssembly `i32` value
    #[inline]
    pub fn u32(i: u32) -> ValRaw {
        // See comments in `ValRaw::i32` for why this is setting the upper
        // 32-bits as well.
        ValRaw::u64(i.into())
    }

    /// Creates a WebAssembly `i64` value
    #[inline]
    pub fn u64(i: u64) -> ValRaw {
        ValRaw::i64(i as i64)
    }

    /// Creates a WebAssembly `f32` value
    #[inline]
    pub fn f32(i: u32) -> ValRaw {
        // See comments in `ValRaw::i32` for why this is setting the upper
        // 32-bits as well.
        ValRaw::u64(i.into())
    }

pub fn f32(i: u32) -> ValRaw

Creates a WebAssembly f32 value

pub fn f64(i: u64) -> ValRaw

Creates a WebAssembly f64 value

pub fn v128(i: u128) -> ValRaw

Creates a WebAssembly v128 value

pub fn funcref(i: usize) -> ValRaw

Creates a WebAssembly funcref value

pub fn externref(i: usize) -> ValRaw

Creates a WebAssembly externref value

pub fn get_i32(&self) -> i32

Gets the WebAssembly i32 value

Examples found in repository

src/vmcontext.rs (line 1064)

    pub fn get_u32(&self) -> u32 {
        self.get_i32() as u32
    }

pub fn get_i64(&self) -> i64

Gets the WebAssembly i64 value

Examples found in repository

src/vmcontext.rs (line 1070)

    pub fn get_u64(&self) -> u64 {
        self.get_i64() as u64
    }

pub fn get_u32(&self) -> u32

Gets the WebAssembly i32 value

pub fn get_u64(&self) -> u64

Gets the WebAssembly i64 value

pub fn get_f32(&self) -> u32

Gets the WebAssembly f32 value

pub fn get_f64(&self) -> u64

Gets the WebAssembly f64 value

pub fn get_v128(&self) -> u128

Gets the WebAssembly v128 value

pub fn get_funcref(&self) -> usize

Gets the WebAssembly funcref value

pub fn get_externref(&self) -> usize

Gets the WebAssembly externref value

Trait Implementations

impl Clone for ValRaw

fn clone(&self) -> ValRaw

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for ValRaw