Imported Upstream version 1.72.0

[platform/upstream/boost.git] / boost / functional / value_factory.hpp

diff --git a/boost/functional/value_factory.hpp b/boost/functional/value_factory.hpp
index ba94c2a..dc716bb 100644 (file)
--- a/boost/functional/value_factory.hpp
+++ b/boost/functional/value_factory.hpp
@@ -1,69 +1,106 @@
-/*=============================================================================
-    Copyright (c) 2007 Tobias Schwinger
-  
-    Use modification and distribution are subject to 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_FUNCTIONAL_VALUE_FACTORY_HPP_INCLUDED
-#   ifndef BOOST_PP_IS_ITERATING
-
-#     include <boost/preprocessor/iteration/iterate.hpp>
-#     include <boost/preprocessor/repetition/enum_params.hpp>
-#     include <boost/preprocessor/repetition/enum_binary_params.hpp>
-
-#     include <new>
-#     include <boost/pointee.hpp>
-#     include <boost/get_pointer.hpp>
-#     include <boost/non_type.hpp>
-#     include <boost/type_traits/remove_cv.hpp>
-
-#     ifndef BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY
-#       define BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY 10
-#     elif BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY < 3
-#       undef  BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY
-#       define BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY 3
-#     endif
-
-namespace boost
-{
-    template< typename T >
-    class value_factory;
-
-    //----- ---- --- -- - -  -   -
-
-    template< typename T >
-    class value_factory
-    {
-      public:
-        typedef T result_type;
-
-        value_factory()
-        { }
-
-#     define BOOST_PP_FILENAME_1 <boost/functional/value_factory.hpp>
-#     define BOOST_PP_ITERATION_LIMITS (0,BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY)
-#     include BOOST_PP_ITERATE()
-    };
-
-    template< typename T > class value_factory<T&>;
-    // forbidden, would create a dangling reference
-}
-#     define BOOST_FUNCTIONAL_VALUE_FACTORY_HPP_INCLUDED
-#   else // defined(BOOST_PP_IS_ITERATING)
-
-#     define N BOOST_PP_ITERATION()
-#     if N > 0
-    template< BOOST_PP_ENUM_PARAMS(N, typename T) >
-#     endif
-    inline result_type operator()(BOOST_PP_ENUM_BINARY_PARAMS(N,T,& a)) const
-    {
-        return result_type(BOOST_PP_ENUM_PARAMS(N,a));
+/*
+Copyright 2007 Tobias Schwinger
+
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_FUNCTIONAL_VALUE_FACTORY_HPP
+#define BOOST_FUNCTIONAL_VALUE_FACTORY_HPP
+
+#include <boost/config.hpp>
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && \
+    !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+#include <utility>
+#endif
+
+namespace boost {
+
+template<class  T>
+class value_factory;
+
+template<class T>
+class value_factory {
+public:
+    typedef T result_type;
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && \
+    !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+    template<class... Args>
+    result_type operator()(Args&&... args) const {
+        return result_type(std::forward<Args>(args)...);
+    }
+#else
+    result_type operator()() const {
+        return result_type();
+    }
+
+    template<class A0>
+    result_type operator()(A0& a0) const {
+        return result_type(a0);
+    }
+
+    template<class A0, class A1>
+    result_type operator()(A0& a0, A1& a1) const {
+        return result_type(a0, a1);
+    }
+
+    template<class A0, class A1, class A2>
+    result_type operator()(A0& a0, A1& a1, A2& a2) const {
+        return result_type(a0, a1, a2);
+    }
+
+    template<class A0, class A1, class A2, class A3>
+    result_type operator()(A0& a0, A1& a1, A2& a2, A3& a3) const {
+        return result_type(a0, a1, a2, a3);
+    }
+
+    template<class A0, class A1, class A2, class A3, class A4>
+    result_type operator()(A0& a0, A1& a1, A2& a2, A3& a3, A4& a4) const {
+        return result_type(a0, a1, a2, a3, a4);
+    }
+
+    template<class A0, class A1, class A2, class A3, class A4, class A5>
+    result_type operator()(A0& a0, A1& a1, A2& a2, A3& a3, A4& a4,
+        A5& a5) const {
+        return result_type(a0, a1, a2, a3, a4, a5);
+    }
+
+    template<class A0, class A1, class A2, class A3, class A4, class A5,
+        class A6>
+    result_type operator()(A0& a0, A1& a1, A2& a2, A3& a3, A4& a4, A5& a5,
+        A6& a6) const {
+        return result_type(a0, a1, a2, a3, a4, a5, a6);
+    }
+
+    template<class A0, class A1, class A2, class A3, class A4, class A5,
+        class A6, class A7>
+    result_type operator()(A0& a0, A1& a1, A2& a2, A3& a3, A4& a4, A5& a5,
+        A6& a6, A7& a7) const {
+        return result_type(a0, a1, a2, a3, a4, a5, a6, a7);
+    }
+
+    template<class A0, class A1, class A2, class A3, class A4, class A5,
+        class A6, class A7, class A8>
+    result_type operator()(A0& a0, A1& a1, A2& a2, A3& a3, A4& a4, A5& a5,
+        A6& a6, A7& a7, A8& a8) const {
+        return result_type(a0, a1, a2, a3, a4, a5, a6, a7, a8);
+    }
+
+    template<class A0, class A1, class A2, class A3, class A4, class A5,
+        class A6, class A7, class A8, class A9>
+    result_type operator()(A0& a0, A1& a1, A2& a2, A3& a3, A4& a4, A5& a5,
+        A6& a6, A7& a7, A8& a8, A9& a9) const {
+        return result_type(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9);
     }
-#     undef N
+#endif
+};
 
-#   endif // defined(BOOST_PP_IS_ITERATING)
+template<class T>
+class value_factory<T&> { };
 
-#endif // include guard
+} /* boost */
 
+#endif