global.hpp

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// Copyright (c) 2023 Petter Nilsson. MIT License. https://github.com/pettni/ezconfig
 
#pragma once
 
namespace ezconfig {
 
template<typename T>
T & gInstance();
 
};  // namespace ezconfig
 
#define EZ_GLOBAL_DECLARE(...) \
  template<>                   \
  __VA_ARGS__ & ::ezconfig::gInstance<__VA_ARGS__>()
 
#define EZ_GLOBAL_DEFINE(...)                        \
  template<>                                         \
  __VA_ARGS__ & ::ezconfig::gInstance<__VA_ARGS__>() \
  {                                                  \
    static __VA_ARGS__ global_instance{};            \
    return global_instance;                          \
  }                                                  \
  static_assert(true)
 
#define EZ_GLOBAL_INSTANCE(...) ::ezconfig::gInstance<__VA_ARGS__>()