Macro iron_oxide::handle

macro_rules! handle {
    ($name:ident) => { ... };
}

Provides an implementation of Drop which implements lifetime-based releasing on the implemented type's pointer to an Objective C object.

This implementation of Drop decrements the reference count of the object which the get_ptr method returns. This ensures that the object to which the implementor points lives only for the lifetime of the implementor.

Requirements

The ident passed into handle! must be the correct local name of a struct or enum which implements Object.

Example

use iron_oxide::{ObjectPointer, handle, Object};

struct Wrapper(ObjectPointer);
handle!(Wrapper);

impl Object for Wrapper {
    unsafe fn from_ptr(ptr: ObjectPointer) -> Self where
        Self: Sized {
        Wrapper(ptr)
    }

    fn get_ptr(&self) -> ObjectPointer {
        self.0
    }

}