BSTSingleton.h

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#pragma once
 
namespace RE
{
    //=====================================================
    // BSTSingletonExplicit
    //=====================================================
 
    template <class T>
    struct BSTSingletonExplicit
    {};
 
    //=====================================================
    // BSTSingletonImplicit
    //=====================================================
 
    template <class T>
    struct BSTSingletonImplicit
    {};
 
    //=====================================================
    // BSTSingletonSDM
    //=====================================================
 
    template <class>
    struct BSTSingletonSDMBase;
 
    template <class T>
    struct BSTSingletonSDMOpStaticBuffer
    {};
 
    template <class T, class Alloc = BSTSingletonSDMOpStaticBuffer<T>>
    struct BSTSDMTraits
    {
        using Type = T;
        using Allocator = Alloc;
    };
 
    template <class Traits>
    struct BSTSingletonSDMBase :
        public Traits,
        public Traits::Allocator
    {
        using Type = typename Traits::Type;
        using Allocator = typename Traits::Allocator;
    };
 
    template <class T, template <class> class Singleton = BSTSingletonSDMOpStaticBuffer>
    struct BSTSingletonSDM : public BSTSingletonSDMBase<BSTSDMTraits<T, Singleton<T>>>
    {};
}