traits.h

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namespace pfc {

    class traits_default {
    public:
        enum { 
            realloc_safe = false, 
            needs_destructor = true, 
            needs_constructor = true, 
            constructor_may_fail = true
        };
    };
    
    class traits_default_movable {
    public:
        enum { 
            realloc_safe = true, 
            needs_destructor = true, 
            needs_constructor = true, 
            constructor_may_fail = true
        };
    };

    class traits_rawobject : public traits_default {
    public:
        enum { 
            realloc_safe = true, 
            needs_destructor = false, 
            needs_constructor = false, 
            constructor_may_fail = false
        };
    };

    class traits_vtable {
    public:
        enum {
            realloc_safe = true,
            needs_destructor = true,
            needs_constructor = true,
            constructor_may_fail = false
        };
    };

    template<typename T> class traits_t : public traits_default {};

    template<typename traits1,typename traits2>
    class combine_traits {
    public:
        enum {
            realloc_safe = (traits1::realloc_safe && traits2::realloc_safe),
            needs_destructor = (traits1::needs_destructor || traits2::needs_destructor),
            needs_constructor = (traits1::needs_constructor || traits2::needs_constructor),
            constructor_may_fail = (traits1::constructor_may_fail || traits2::constructor_may_fail),
        };
    };

    template<typename type1, typename type2>
    class traits_combined : public combine_traits<traits_t<type1>,traits_t<type2> > {};

    template<typename T> class traits_t<T*> : public traits_rawobject {};

    template<> class traits_t<char> : public traits_rawobject {};
    template<> class traits_t<unsigned char> : public traits_rawobject {};
    template<> class traits_t<signed char> : public traits_rawobject {};
    template<> class traits_t<wchar_t> : public traits_rawobject {};
    template<> class traits_t<short> : public traits_rawobject {};
    template<> class traits_t<unsigned short> : public traits_rawobject {};
    template<> class traits_t<int> : public traits_rawobject {};
    template<> class traits_t<unsigned int> : public traits_rawobject {};
    template<> class traits_t<long> : public traits_rawobject {};
    template<> class traits_t<unsigned long> : public traits_rawobject {};
    template<> class traits_t<long long> : public traits_rawobject {};
    template<> class traits_t<unsigned long long> : public traits_rawobject {};
    template<> class traits_t<bool> : public traits_rawobject {};

    template<> class traits_t<float> : public traits_rawobject {};
    template<> class traits_t<double> : public traits_rawobject {};
    
    template<> class traits_t<GUID> : public traits_rawobject {};

    template<typename T,t_size p_count>
    class traits_t<T[p_count]> : public traits_t<T> {};

}