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use std::error::Error;
use std::marker::PhantomData;
use std::sync::Arc;
use super::null_ptr_error;
use super::{FromForeign, InputType};
pub struct ArcRefMarshaler<T>(PhantomData<T>);
impl<T> InputType for ArcRefMarshaler<T> {
type Foreign = *const T;
}
impl<'a, T> FromForeign<*const T, Arc<T>> for ArcRefMarshaler<T> {
type Error = Box<dyn Error>;
#[inline(always)]
unsafe fn from_foreign(foreign: *const T) -> Result<Arc<T>, Self::Error> {
if foreign.is_null() {
return Err(null_ptr_error());
}
let arc = Arc::from_raw(foreign);
let cloned = Arc::clone(&arc);
let _x = Arc::into_raw(arc);
Ok(cloned)
}
}