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Diffstat (limited to 'boost/process/detail/traits/decl.hpp')
-rw-r--r-- | boost/process/detail/traits/decl.hpp | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/boost/process/detail/traits/decl.hpp b/boost/process/detail/traits/decl.hpp new file mode 100644 index 0000000000..48f8022f73 --- /dev/null +++ b/boost/process/detail/traits/decl.hpp @@ -0,0 +1,76 @@ +// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ + +#ifndef BOOST_PROCESS_DETAIL_TRAITS_DECL_HPP_
+#define BOOST_PROCESS_DETAIL_TRAITS_DECL_HPP_
+ +#include <boost/process/detail/config.hpp>
+#include <boost/none.hpp>
+#include <type_traits>
+ +#if defined(BOOST_POSIX_API)
+#include <boost/process/detail/posix/handler.hpp>
+#elif defined(BOOST_WINDOWS_API)
+#include <boost/process/detail/windows/handler.hpp>
+#endif
+ + +namespace boost { namespace process { namespace detail {
+ + +template<typename T>
+struct is_initializer : std::is_base_of<handler_base, T> {};
+ + +template<typename T>
+struct is_initializer<T&> : std::is_base_of<handler_base, T> {};
+ + +template<typename T>
+struct initializer_tag;// { typedef void type; };
+ + +//remove const
+template<typename T>
+struct initializer_tag<const T> { typedef typename initializer_tag<T>::type type; };
+ +//remove &
+template<typename T>
+struct initializer_tag<T&> { typedef typename initializer_tag<T>::type type; };
+ +//remove const &
+template<typename T>
+struct initializer_tag<const T&> { typedef typename initializer_tag<T>::type type; };
+ +template<typename T>
+struct initializer_builder;
+ + +template<typename First, typename ...Args>
+struct valid_argument_list;
+ +template<typename First>
+struct valid_argument_list<First>
+{
+ constexpr static bool value = is_initializer<First>::value || !std::is_void<typename initializer_tag<First>::type>::value;
+ typedef std::integral_constant<bool, value> type;
+};
+ +template<typename First, typename ...Args>
+struct valid_argument_list
+{
+ constexpr static bool my_value = is_initializer<First>::value || !std::is_void<typename initializer_tag<First>::type>::value;
+ constexpr static bool value = valid_argument_list<Args...>::value && my_value;
+ typedef std::integral_constant<bool, value> type;
+};
+ + + +}}}
+ + + +#endif /* BOOST_PROCESS_DETAIL_HANDLER_HPP_ */
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