context.h

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#ifndef __CONTEXT_H
#define __CONTEXT_H
 
#include <memory>
#include <tuple>
 
template <typename... Args> struct Context {
    Context(Args*... args)
        // need explicitely mark unique_ptr type as GCC 5 fails to deduce type
        : _implsPtr(std::unique_ptr<Args>(args)...)
    {
    }
 
    template <typename T> T& get() const
    {
        return *std::get<std::unique_ptr<T>>(_implsPtr).get();
    }
 
private:
    std::tuple<std::unique_ptr<Args>...> _implsPtr;
};
 
struct CanDeviceInterface;
typedef Context<CanDeviceInterface> CanDeviceCtx;
 
struct CRSGuiInterface;
struct NLMFactoryInterface;
typedef Context<CRSGuiInterface, NLMFactoryInterface> CanRawSenderCtx;
 
struct CRVGuiInterface;
typedef Context<CRVGuiInterface> CanRawViewCtx;
 
#endif /* !__CONTEXT_H */