Add std::make_unique

beast/make_unique.h

@@ -0,0 +1,93 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of Beast: https://github.com/vinniefalco/Beast
+    Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#ifndef BEAST_MAKE_UNIQUE_H_INCLUDED
+#define BEAST_MAKE_UNIQUE_H_INCLUDED
+
+#include <boost/config.hpp>
+
+namespace std {
+
+#ifdef BOOST_NO_CXX11_VARIADIC_TEMPLATES
+
+template <class T>
+std::unique_ptr <T> make_unique ()
+{
+    return std::unique_ptr <T> (new T);
+}
+
+template <class T, class P1>
+std::unique_ptr <T> make_unique (P1&& p1)
+{
+    return std::unique_ptr <T> (new T (std::forward <P1> (p1)));
+}
+
+template <class T, class P1, class P2>
+std::unique_ptr <T> make_unique (P1&& p1, P2&& p2)
+{
+    return std::unique_ptr <T> (new T (
+        std::forward <P1> (p1), std::forward <P2> (p2)));
+}
+
+template <class T, class P1, class P2, class P3>
+std::unique_ptr <T> make_unique (P1&& p1, P2&& p2, P3&& p3)
+{
+    return std::unique_ptr <T> (new T (
+        std::forward <P1> (p1), std::forward <P2> (p2), std::forward <P3> (p3)));
+}
+
+template <class T, class P1, class P2, class P3, class P4>
+std::unique_ptr <T> make_unique (P1&& p1, P2&& p2, P3&& p3, P4&& p4)
+{
+    return std::unique_ptr <T> (new T (
+        std::forward <P1> (p1), std::forward <P2> (p2), std::forward <P3> (p3), 
+        std::forward <P4> (p4)));
+}
+
+template <class T, class P1, class P2, class P3, class P4, class P5>
+std::unique_ptr <T> make_unique (P1&& p1, P2&& p2, P3&& p3, P4&& p4, P5&& p5)
+{
+    return std::unique_ptr <T> (new T (
+        std::forward <P1> (p1), std::forward <P2> (p2), std::forward <P3> (p3), 
+        std::forward <P4> (p4), std::forward <P5> (p5)));
+}
+
+template <class T, class P1, class P2, class P3, class P4, class P5, class P6>
+std::unique_ptr <T> make_unique (P1&& p1, P2&& p2, P3&& p3, P4&& p4, P5&& p5, P6&& p6)
+{
+    return std::unique_ptr <T> (new T (
+        std::forward <P1> (p1), std::forward <P2> (p2), std::forward <P3> (p3), 
+        std::forward <P4> (p4), std::forward <P5> (p5), std::forward <P6> (p6)));
+}
+
+//------------------------------------------------------------------------------
+
+#else
+
+template <class T, class... Args>
+std::unique_ptr <T> make_unique (Args&&... args)
+{
+    return std::unique_ptr <T> (new T (std::forward <Args> (args)...));
+}
+
+#endif
+
+}
+
+#endif