func exists()

in pkg/printers/jsonpath.go [38:81]

• 44 lines of code
• 12 McCabe index (conditional complexity)

func exists(item interface{}, indices ...interface{}) bool {
	v := reflect.ValueOf(item)
	for _, i := range indices {
		index := reflect.ValueOf(i)
		var isNil bool
		if v, isNil = indirect(v); isNil {
			return false
		}
		switch v.Kind() {
		case reflect.Array, reflect.Slice, reflect.String:
			var x int64
			switch index.Kind() {
			case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
				x = index.Int()
			case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
				x = int64(index.Uint())
			default:
				return false
			}
			if x < 0 || x >= int64(v.Len()) {
				return false
			}
			v = v.Index(int(x))
		case reflect.Map:
			if !index.IsValid() {
				index = reflect.Zero(v.Type().Key())
			}
			if !index.Type().AssignableTo(v.Type().Key()) {
				return false
			}
			if x := v.MapIndex(index); x.IsValid() {
				v = x
			} else {
				v = reflect.Zero(v.Type().Elem())
			}
		default:
			return false
		}
	}
	if _, isNil := indirect(v); isNil {
		return false
	}
	return true
}