source: vendor/nemo/current/NEMOGCM/EXTERNAL/XIOS/extern/boost/include/boost/utility/swap.hpp @ 44

Last change on this file since 44 was 44, checked in by cholod, 12 years ago

Load NEMO_TMP into vendor/nemo/current.

File size: 1.6 KB
Line 
1// Copyright (C) 2007, 2008 Steven Watanabe, Joseph Gauterin, Niels Dekker
2//
3// Distributed under the Boost Software License, Version 1.0. (See
4// accompanying file LICENSE_1_0.txt or copy at
5// http://www.boost.org/LICENSE_1_0.txt)
6// For more information, see http://www.boost.org
7
8
9#ifndef BOOST_UTILITY_SWAP_HPP
10#define BOOST_UTILITY_SWAP_HPP
11
12// Note: the implementation of this utility contains various workarounds:
13// - swap_impl is put outside the boost namespace, to avoid infinite
14// recursion (causing stack overflow) when swapping objects of a primitive
15// type.
16// - swap_impl has a using-directive, rather than a using-declaration,
17// because some compilers (including MSVC 7.1, Borland 5.9.3, and
18// Intel 8.1) don't do argument-dependent lookup when it has a
19// using-declaration instead.
20// - boost::swap has two template arguments, instead of one, to
21// avoid ambiguity when swapping objects of a Boost type that does
22// not have its own boost::swap overload.
23
24#include <algorithm> //for std::swap
25#include <cstddef> //for std::size_t
26
27namespace boost_swap_impl
28{
29  template<class T>
30  void swap_impl(T& left, T& right)
31  {
32    using namespace std;//use std::swap if argument dependent lookup fails
33    swap(left,right);
34  }
35
36  template<class T, std::size_t N>
37  void swap_impl(T (& left)[N], T (& right)[N])
38  {
39    for (std::size_t i = 0; i < N; ++i)
40    {
41      ::boost_swap_impl::swap_impl(left[i], right[i]);
42    }
43  }
44}
45
46namespace boost
47{
48  template<class T1, class T2>
49  void swap(T1& left, T2& right)
50  {
51    ::boost_swap_impl::swap_impl(left, right);
52  }
53}
54
55#endif
Note: See TracBrowser for help on using the repository browser.