ReadOnlyViewSupplier.h

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#pragma once
#include <utility>
 
namespace catapult { namespace cache {
 
    template<typename TView>
    class ReadOnlyViewSupplier : public TView {
    public:
        template<typename... TArgs>
        ReadOnlyViewSupplier(TArgs&&... args)
                : TView(std::forward<TArgs>(args)...)
                , m_readOnlyView(*this)
        {}
 
        ReadOnlyViewSupplier(ReadOnlyViewSupplier&& rhs)
                : TView(std::move(rhs))
                , m_readOnlyView(*this)
        {}
 
    public:
        const typename TView::ReadOnlyView& asReadOnly() const {
            return m_readOnlyView;
        }
 
    private:
        typename TView::ReadOnlyView m_readOnlyView;
    };
}}