Function luaD_poscall

depends/lua/src/ldo.c:376–391

** Finishes a function call: calls hook if necessary, removes CallInfo, ** moves current number of results to proper place; returns 0 iff call ** wanted multiple (variable number of) results. */

** wanted multiple (variable number of) results.
*/
int luaD_poscall (lua_State *L, CallInfo *ci, StkId firstResult, int nres) {
  StkId res;
  int wanted = ci->nresults;
  if (L->hookmask & (LUA_MASKRET | LUA_MASKLINE)) {
    if (L->hookmask & LUA_MASKRET) {
      ptrdiff_t fr = savestack(L, firstResult);  /* hook may change stack */
      luaD_hook(L, LUA_HOOKRET, -1);
      firstResult = restorestack(L, fr);
    }
    L->oldpc = ci->previous->u.l.savedpc;  /* 'oldpc' for caller function */
  }
  res = ci->func;  /* res == final position of 1st result */
  L->ci = ci->previous;  /* back to caller */
  /* move results to proper place */
  return moveresults(L, firstResult, res, nres, wanted);
}