Module interoptopus::patterns::option

Like a regular Option but FFI safe.

Example

This function accepts an FFI option and converts it into a Rust option.

use interoptopus::ffi_function;
use interoptopus::patterns::option::FFIOption;

#[ffi_function]
#[no_mangle]
pub extern "C" fn set_value(x: FFIOption<u8>) {
    let _ = x.into_option();
}

On C FFI level the following binding code is generated:

typedef struct optionu8
    {
    uint8_t t;
    uint8_t is_some;
    } optionu8;

void set_value(optionu8 x);

Structs

FFIOption

An option-like type at the FFI boundary where a regular Option doesn’t work.