ocaml_sys/
callback.rs

1//! Callbacks from C to OCaml
2//! This is also where you initialize the OCaml runtime system via `caml_startup` or `caml_main`
3//!
4
5use crate::mlvalues::Value;
6
7extern "C" {
8    pub fn caml_callback(closure: Value, arg: Value) -> Value;
9    pub fn caml_callback2(closure: Value, arg1: Value, arg2: Value) -> Value;
10    pub fn caml_callback3(closure: Value, arg1: Value, arg2: Value, arg3: Value) -> Value;
11    pub fn caml_callbackN(closure: Value, narg: usize, args: *mut Value) -> Value;
12
13    pub fn caml_callback_exn(closure: Value, arg1: Value) -> Value;
14    pub fn caml_callback2_exn(closure: Value, arg1: Value, arg2: Value) -> Value;
15    pub fn caml_callback3_exn(closure: Value, arg1: Value, arg2: Value, arg3: Value) -> Value;
16    pub fn caml_callbackN_exn(closure: Value, narg: usize, args: *mut Value) -> Value;
17
18    pub static mut caml_callback_depth: usize;
19}
20
21pub const fn is_exception_result(val: Value) -> bool {
22    (val as usize) & 3 == 2
23}
24
25pub const fn extract_exception(val: Value) -> Value {
26    val & !3
27}
ocaml_sys/callback.rs

ocaml_sys/
callback.rs
