common.hpp

#pragma once
#include <concepts>
 
namespace bugui
{
#define ENUM_CHECK(Enum, Value)                               \
template <typename Tp>                                        \
concept Enum##_enum_##Value = Tp::Enum()                      \
                              == decltype(Tp::Enum())::Value;
 
#define EMPTY_ENUM_CHECK(E)                             \
template <typename Tp>                                  \
concept E##_empty_enum = std::is_enum_v<typename Tp::E>;
 
template <typename Tp, typename Up>
concept different = !std::same_as<Tp, Up>;
 
template <typename Tp>
concept is_void = std::is_void_v<Tp>;
 
template <typename Tp>
concept integral_no_bool = std::integral<Tp>
                           && different<Tp, bool>;
 
template <typename Tp>
concept array_like = requires(Tp t)
{
  t.begin();
  t.cbegin();
  t.end();
  t.cend();
  t.size();
  t[0];
};
 
} // namespace bugui