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use std::mem;
use runtime::Imp;
extern {
fn objc_msgSend();
fn objc_msgSend_stret();
fn objc_msgSendSuper();
fn objc_msgSendSuper_stret();
}
pub fn msg_send_fn<R>() -> Imp {
// If the size of an object is larger than two eightbytes, it has class MEMORY.
// If the type has class MEMORY, then the caller provides space for the return
// value and passes the address of this storage.
if mem::size_of::<R>() <= 16 {
objc_msgSend
} else {
objc_msgSend_stret
}
}
pub fn msg_send_super_fn<R>() -> Imp {
if mem::size_of::<R>() <= 16 {
objc_msgSendSuper
} else {
objc_msgSendSuper_stret
}
}