null.h

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#ifndef NULL_H_62B23520_7C8E_11DE_8A39_0800200C9A66_PM
#define NULL_H_62B23520_7C8E_11DE_8A39_0800200C9A66_PM
 
#if defined(_MSC_VER) || (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || (__GNUC__ >= 4)) // GCC supports "pragma once" correctly since 3.4
#pragma once
#endif
 
 
#include "yaml-cpp-pm/dll.h"
 
namespace YAML_PM
{
        class Node;
        
        struct YAML_CPP_API _Null {};
        inline bool operator == (const _Null&, const _Null&) { return true; }
        inline bool operator != (const _Null&, const _Null&) { return false; }
        
        YAML_CPP_API bool IsNull(const Node& node); // old API only
        
        extern YAML_CPP_API _Null Null;
}
 
#endif // NULL_H_62B23520_7C8E_11DE_8A39_0800200C9A66_PM