stdoptional.hpp

#pragma once

#include "stdver.hpp"

#if CVB_HAS_CPP2017
#  if defined __has_include && __has_include(<optional>)
#    define CVB_HAS_STDOPTIONAL
#  endif
#endif

#ifdef CVB_HAS_STDOPTIONAL

#  include <optional>

namespace Cvb
{
using std::bad_optional_access;
using std::optional;
using std::nullopt_t;
using std::make_optional;
inline constexpr std::nullopt_t nullopt = std::nullopt;
inline constexpr std::in_place_t in_place = std::in_place;
}

#else

#  include "optional.hpp"

namespace Cvb
{
using Shims::bad_optional_access;
using Shims::optional;
using Shims::nullopt_t;
using Shims::make_optional;
static constexpr Shims::nullopt_t nullopt{};
static constexpr Shims::in_place_t in_place{};
}

#endif