Method tableAt

vm.go:22–42

(t value, key value)

}

func (l *State) tableAt(t value, key value) value {
	for loop := 0; loop < maxTagLoop; loop++ {
		var tm value
		if table, ok := t.(*table); ok {
			if result := table.at(key); result != nil {
				return result
			} else if tm = l.fastTagMethod(table.metaTable, tmIndex); tm == nil {
				return nil
			}
		} else if tm = l.tagMethodByObject(t, tmIndex); tm == nil {
			l.typeError(t, "index")
		}
		switch tm.(type) {
		case closure, *goFunction:
			return l.callTagMethod(tm, t, key)
		}
		t = tm
	}
	l.runtimeError("loop in table")
	return nil
}

func (l *State) setTableAt(t value, key value, val value) {
	for loop := 0; loop < maxTagLoop; loop++ {