Function toFieldIterator

valdi_protobuf/src/valdi_protobuf/Message.cpp:162–172

template<typename T, typename F>
T toFieldIterator(F field) {
    if (field == nullptr) {
        return T(nullptr, nullptr);
    }
    auto* repeatedField = field->getRepeated();
    if (repeatedField != nullptr) {
        return T(repeatedField->begin(), repeatedField->end());
    } else {
        return T(field, field + 1);
    }
}

RepeatedFieldIterator Message::getFieldIterator(FieldNumber fieldNumber) {
    return toFieldIterator<RepeatedFieldIterator>(getField(fieldNumber));