marker.hpp

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// Copyright (c) 2026 Contributors to the Eclipse Foundation
//
// See the NOTICE file(s) distributed with this work for additional
// information regarding copyright ownership.
//
// This program and the accompanying materials are made available under the
// terms of the Apache Software License 2.0 which is available at
// https://www.apache.org/licenses/LICENSE-2.0, or the MIT license
// which is available at https://opensource.org/licenses/MIT.
//
// SPDX-License-Identifier: Apache-2.0 OR MIT
 
#ifndef IOX2_MARKER_HPP
#define IOX2_MARKER_HPP
 
#include "iox2/deployment/iceoryx2_cxx_feature_flags.hpp"
 
#include <cstdint>
 
namespace iox2 {
#if IOX2_FEATURE_FLATBUFFERS
template <typename T>
struct Flatbuffer {
    using ValueType = T;
    static constexpr const char* IOX2_TYPE_NAME = "iox2::Flatbuffer";
};
#endif // IOX2_FEATURE_FLATBUFFERS
 
struct CustomHeaderMarker { };
 
struct CustomPayloadMarker {
    uint8_t value = 0;
};
 
 
namespace internal {
template <typename Given, template <typename> class Required>
struct HasMarker {
    static const bool VALUE = false;
};
 
template <typename T, template <typename> class Required>
struct HasMarker<Required<T>, Required> {
    static const bool VALUE = true;
};
} // namespace internal
 
template <typename T>
constexpr auto has_flatbuffer_marker() -> bool {
#if IOX2_FEATURE_FLATBUFFERS
    return internal::HasMarker<T, Flatbuffer>::VALUE;
#else
    return false;
#endif // IOX2_FEATURE_FLATBUFFERS
}
} // namespace iox2
 
#endif