(n int, d *LFunction)
| 214 | } |
| 215 | |
| 216 | func (ls *LState) OptFunction(n int, d *LFunction) *LFunction { |
| 217 | v := ls.Get(n) |
| 218 | if v == LNil { |
| 219 | return d |
| 220 | } |
| 221 | if lv, ok := v.(*LFunction); ok { |
| 222 | return lv |
| 223 | } |
| 224 | ls.TypeError(n, LTFunction) |
| 225 | return nil |
| 226 | } |
| 227 | |
| 228 | func (ls *LState) OptUserData(n int, d *LUserData) *LUserData { |
| 229 | v := ls.Get(n) |