objc-rs 0.3.1

Objective-C Runtime bindings and wrapper for Rust. Maintained fork of objc crate
Documentation 
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use std::any::Any;
use std::mem;

use super::{Message, MessageArguments, MessageError, Super};
use crate::runtime::{Class, Imp, Object, Sel};

unsafe extern "C" {
    fn objc_msg_lookup(receiver: *mut Object, op: Sel) -> Imp;
    fn objc_msg_lookup_super(sup: *const Super, sel: Sel) -> Imp;
}

pub unsafe fn send_unverified<T, A, R>(obj: *const T, sel: Sel, args: A) -> Result<R, MessageError>
where
    T: Message,
    A: MessageArguments,
    R: Any,
{
    unsafe {
        if obj.is_null() {
            return mem::zeroed();
        }

        let receiver = obj as *mut T as *mut Object;
        let msg_send_fn = objc_msg_lookup(receiver, sel);
        objc_try!({ A::invoke(msg_send_fn, receiver, sel, args) })
    }
}

pub unsafe fn send_super_unverified<T, A, R>(
    obj: *const T,
    superclass: &Class,
    sel: Sel,
    args: A,
) -> Result<R, MessageError>
where
    T: Message,
    A: MessageArguments,
    R: Any,
{
    unsafe {
        let receiver = obj as *mut T as *mut Object;
        let sup = Super {
            receiver: receiver,
            superclass: superclass,
        };
        let msg_send_fn = objc_msg_lookup_super(&sup, sel);
        objc_try!({ A::invoke(msg_send_fn, receiver, sel, args) })
    }
}