experimental.hpp

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#pragma once
 
#include "leia/core/cxx/library.hpp"
#include "leia/core/experimental.h"
 
namespace leia {
 
template <class _Fp>
class ExperimentalAPIEntry;
 
template <class R, class... Args>
class ExperimentalAPIEntry<R(Args...)> {
public:
    ExperimentalAPIEntry(const char* name, int32_t version) : _name(name), _version(version)
    {
    }
 
    using Func = R (*)(Args...);
 
    void Load(leia_core_library* coreLibrary)
    {
        _func = reinterpret_cast<Func>(leia_get_experimental_api(coreLibrary, _name, _version));
    }
 
    R operator()(Args... args) const
    {
        return _func(std::forward<Args>(args)...);
    }
 
    explicit operator bool() const
    {
        return _func != nullptr;
    }
 
private:
    const char* const _name;
    int32_t const     _version;
 
    Func _func = nullptr;
};
 
#define LEIA_CXX_DECLARE_EXPERIMENTAL_API_ENTRY(T)                \
    ExperimentalAPIEntry<typename std::remove_pointer<T>::type> T \
    {                                                             \
        #T, T##_VERSION                                           \
    }
 
} // namespace leia