comparison DEPENDENCIES/generic/include/boost/utility/swap.hpp @ 101:c530137014c0

Update Boost headers (1.58.0)

-// Copyright (C) 2007, 2008 Steven Watanabe, Joseph Gauterin, Niels Dekker
-//
-// 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)
-// For more information, see http://www.boost.org
-
+/*
+ * Copyright (c) 2014 Glen Fernandes
+ *
+ * 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_UTILITY_SWAP_HPP
 #define BOOST_UTILITY_SWAP_HPP
 
-// Note: the implementation of this utility contains various workarounds:
-// - swap_impl is put outside the boost namespace, to avoid infinite
-// recursion (causing stack overflow) when swapping objects of a primitive
-// type.
-// - swap_impl has a using-directive, rather than a using-declaration,
-// because some compilers (including MSVC 7.1, Borland 5.9.3, and
-// Intel 8.1) don't do argument-dependent lookup when it has a
-// using-declaration instead.
-// - boost::swap has two template arguments, instead of one, to
-// avoid ambiguity when swapping objects of a Boost type that does
-// not have its own boost::swap overload.
+// The header file at this path is deprecated;
+// use boost/core/swap.hpp instead.
 
-#include <algorithm> //for std::swap
-#include <cstddef> //for std::size_t
-
-namespace boost_swap_impl
-{
-  template<class T>
-  void swap_impl(T& left, T& right)
-  {
-    using namespace std;//use std::swap if argument dependent lookup fails
-    swap(left,right);
-  }
-
-  template<class T, std::size_t N>
-  void swap_impl(T (& left)[N], T (& right)[N])
-  {
-    for (std::size_t i = 0; i < N; ++i)
-    {
-      ::boost_swap_impl::swap_impl(left[i], right[i]);
-    }
-  }
-}
-
-namespace boost
-{
-  template<class T1, class T2>
-  void swap(T1& left, T2& right)
-  {
-    ::boost_swap_impl::swap_impl(left, right);
-  }
-}
+#include <boost/core/swap.hpp>
 
 #endif