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Use Boost Optional if SOL_USE_BOOST is defined

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Usecase: Project already uses Boost as dependency, your compiler doesn't
come with <optional> yet and you want to minimize further dependencies.
This commit is contained in:
Georg Sauthoff 2016-05-27 09:15:28 +02:00
parent 9b65fb9f93
commit 250661b780
1 changed files with 7 additions and 0 deletions
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7
sol/optional.hpp
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@ -24,6 +24,8 @@
#if __cplusplus > 201402L #if __cplusplus > 201402L
#include <optional> #include <optional>
#elif defined(SOL_USE_BOOST)
#include <boost/optional.hpp>
#else #else
#include "../Optional/optional.hpp" #include "../Optional/optional.hpp"
#endif // C++ 14 #endif // C++ 14
@ -35,6 +37,11 @@ template <typename T>
using optional = sol::optional<T>; using optional = sol::optional<T>;
using nullopt_t = std::nullopt_t; using nullopt_t = std::nullopt_t;
constexpr nullopt_t nullopt = std::nullopt; constexpr nullopt_t nullopt = std::nullopt;
#elif defined(SOL_USE_BOOST)
template <typename T>
using optional = boost::optional<T>;
using nullopt_t = boost::none_t;
const nullopt_t nullopt = boost::none;
#else #else
#endif // C++ 14 #endif // C++ 14
} }