Function luaK_setreturns

lua/src/lcode.c:721–731

** Fix an expression to return the number of results 'nresults'. ** 'e' must be a multi-ret expression (function call or vararg). */

** 'e' must be a multi-ret expression (function call or vararg).
*/
void luaK_setreturns (FuncState *fs, expdesc *e, int nresults) {
  Instruction *pc = &getinstruction(fs, e);
  if (e->k == VCALL)  /* expression is an open function call? */
    SETARG_C(*pc, nresults + 1);
  else {
    lua_assert(e->k == VVARARG);
    SETARG_C(*pc, nresults + 1);
    SETARG_A(*pc, fs->freereg);
    luaK_reserveregs(fs, 1);
  }
}


/*