use std::marker::PhantomData;

pub trait Callback {
    type CallbackFunc;
}

#[derive(Copy, Clone)]
#[repr(C)]
pub struct CallbackPtr<T: Callback> {
    callback_ptr: *const (),
    func: T::CallbackFunc,
    _marker: PhantomData<T>,
}

impl<T: Callback> CallbackPtr<T> {
    pub unsafe fn from_raw(data: T, func: T::CallbackFunc) -> Self {
        todo!()
    }

    pub fn func(&self) -> &T::CallbackFunc {
        &self.func
    }
}