Struct CallbackUserData 

pub struct CallbackUserData { /* private fields */ }

Available on crate feature ffi only.

Wrap the user_data provided by the native code and call the drop function on Drop.

Safety: user_data must be a pointer that can be destroyed by the drop_user_data function. callback must be a valid callback that initialize the ret

Implementations

impl CallbackUserData

pub unsafe fn new( user_data: *mut c_void, drop_user_data: Option<extern "C" fn(*mut c_void)>, callback: extern "C" fn(user_data: *mut c_void, arg: Slice<'_, Box<Value>>) -> Box<Value>, ) -> Self

pub fn call(&self, args: &[Value]) -> Value

Trait Implementations

impl Drop for CallbackUserData

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.