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(s: *const c_char, l: usize) -> i16>,
    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, osize: usize, nsize: usize)>,
}

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(s: *const c_char, l: usize) -> i16>

gets called when a string is created; returned atom can be retrieved via tostringatom

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, osize: usize, nsize: usize)>

gets called when memory is allocated