dynamic json.go

func dynamicUnmarshal(text string) ([][]interface{}, error) {
	var data [][]json.RawMessage

	if err := json.Unmarshal(text, &data); err != nil {
		return nil, err
	}

	result := make([][]interface{}, len(data))
	for i, _ := range result {
		result[i] = make([]interface{}, len(data[i]))
	}

	for i, first := range data {
		for j, rawEntry := range first {
			var typeStruct struct {
				Type string `json:"type"`
			}

			if err := json.Unmarshal(rawEntry, &typeStruct); err != nil {
				return nil, err
			}

			switch typeStruct.Type {
			case "test":
				var decodeTo StructOne
				if err := json.Unmarshal(rawEntry, &decodeTo); err != nil {
					return nil, err
				}

				result[i][j] = decodeTo
			default:
				return nil, errors.New("unsupported type")
			}
		}
	}

	return result, nil
}