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#ifndef __VEREIGN_CORE_RVREF_HH
#define __VEREIGN_CORE_RVREF_HH
namespace vereign {
namespace core {
#ifdef __WINDOWS__
#pragma warning(push)
#pragma warning(disable: 4521)
#endif
/**
* Rvalue reference wrapper.
*
* Wraps rvalue reference in copyable object.
* Thus allowing lambda to capture rvalue references.
*
* @code
* std::string foo = "foo";
* auto foo_ref MakeRvRef(foo);
* auto lambda = [foo_ref] () mutable {
* std::cout << foo_ref.get() << std::endl;
* };
* lambda();
* @endcode
*
*/
template <typename T>
class RvRef {
public:
RvRef() = delete;
RvRef& operator=(RvRef& other) = delete;
RvRef(T&& value) : value_{std::move(value)} {}
RvRef(RvRef& other) : value_{std::move(other.value_)} {}
RvRef(RvRef&& other) : value_{std::move(other.value_)} {}
/**
* Retrieve reference to the stored value.
*/
const T& Get() const noexcept {
return value_;
}
/**
* Retrieve reference to the stored value.
*/
T& Get() noexcept {
return value_;
}
/**
* Retrieve reference to the stored value.
*/
const T* operator->() const noexcept {
return &value_;
}
/**
* Retrieve reference to the stored value.
*/
T* operator->() noexcept {
return &value_;
}
private:
T value_;
};
#ifdef __WINDOWS__
#pragma warning(pop)
#endif
template <typename T>
RvRef<T> MakeRvRef(T&& value) {
return RvRef<T>(std::move(value));
}
}
}
#endif