Struct lua_Callbacks 

#[non_exhaustive]
#[repr(C)]
pub struct lua_Callbacks {

    pub userdata: *mut c_void,
    pub interrupt: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, gc: c_int)>,
    pub panic: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, errcode: c_int)>,
    pub userthread: Option<unsafe extern "C-unwind" fn(LP: *mut lua_State, L: *mut lua_State)>,
    pub useratom: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, s: *const c_char, l: usize) -> i16>,
    pub userfinalizer: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, co: *mut lua_State)>,
    pub debugbreak: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, ar: *mut lua_Debug)>,
    pub debugstep: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, ar: *mut lua_Debug)>,
    pub debuginterrupt: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, ar: *mut lua_Debug)>,
    pub debugprotectederror: Option<unsafe extern "C-unwind" fn(L: *mut lua_State)>,
    pub onallocate: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, block: *mut c_void, osize: usize, nsize: usize, memcat: u8, tt: c_int, tag: c_int)>,
    pub preresume: Option<unsafe extern "C-unwind" fn(L: *mut lua_State)>,
    pub postresume: Option<unsafe extern "C-unwind" fn(L: *mut lua_State)>,
    pub onfree: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, block: *mut c_void)>,
}

Available on crate feature luau only.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

userdata: *mut c_void

arbitrary userdata pointer that is never overwritten by Luau

interrupt: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, gc: c_int)>

gets called at safepoints (loop back edges, call/ret, gc) if set

panic: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, errcode: c_int)>

gets called when an unprotected error is raised (if longjmp is used)

userthread: Option<unsafe extern "C-unwind" fn(LP: *mut lua_State, L: *mut lua_State)>

gets called when L is created (LP == parent) or destroyed (LP == NULL)

useratom: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, s: *const c_char, l: usize) -> i16>

gets called when a string is created to assign an atom id

userfinalizer: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, co: *mut lua_State)>

gets called before a finalizer is attached to co by the current thread

debugbreak: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, ar: *mut lua_Debug)>

gets called when BREAK instruction is encountered

debugstep: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, ar: *mut lua_Debug)>

gets called after each instruction in single step mode

debuginterrupt: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, ar: *mut lua_Debug)>

gets called when thread execution is interrupted by break in another thread

debugprotectederror: Option<unsafe extern "C-unwind" fn(L: *mut lua_State)>

gets called when protected call results in an error

onallocate: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, block: *mut c_void, osize: usize, nsize: usize, memcat: u8, tt: c_int, tag: c_int)>

gets called after a heap object (or array) is allocated

preresume: Option<unsafe extern "C-unwind" fn(L: *mut lua_State)>

gets called before lua_resume runs a coroutine

postresume: Option<unsafe extern "C-unwind" fn(L: *mut lua_State)>

gets called after lua_resume returns

onfree: Option<unsafe extern "C-unwind" fn(L: *mut lua_State, block: *mut c_void)>

gets called before a heap object (or array) is freed