Struct PassAs

pub struct PassAs<T, U>(/* private fields */);

Pass T through the FFI boundary by first converting it to U in the runtime, and then converting it back to T on the host’s side.

Raw FFI type: same as U’s FFI type

Trait Implementations

impl<'a, T, U> FromFFIValue<'a> for PassAs<T, U>

where U: RIType + FromFFIValue<'a> + Primitive, T: TryFrom<<U as FromFFIValue<'a>>::Owned> + Copy,

type Owned = T

The owned inner type.

fn from_ffi_value( context: &mut dyn FunctionContext, arg: Self::FFIType, ) -> Result<Self::Owned>

Creates Self::Owned from the given arg received through the FFI boundary from the runtime.

fn take_from_owned(owned: &'a mut Self::Owned) -> Self::Inner

Creates Self::Inner from an owned value.

fn write_back_into_runtime( _value: Self::Owned, _context: &mut dyn FunctionContext, _arg: Self::FFIType, ) -> Result<()>

Write back a modified value back into the runtime’s memory.

impl<T, U> RIType for PassAs<T, U>

where U: RIType,

type FFIType = <U as RIType>::FFIType

The raw FFI type that is used to pass Self through the host <-> runtime boundary.

type Inner = T

The inner type without any serialization strategy wrapper.