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author | Remko Tronçon <git@el-tramo.be> | 2010-03-28 15:46:49 (GMT) |
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committer | Remko Tronçon <git@el-tramo.be> | 2010-03-28 15:46:49 (GMT) |
commit | f53a1ef582494458301b97bf6e546be52d7ff7e8 (patch) | |
tree | 7571b5cbcbd8a8f1dd1c966c9045b6cb69f0e295 /3rdParty/Boost/src/boost/utility/swap.hpp | |
parent | 638345680d72ca6acaf123f2c8c1c391f696e371 (diff) | |
download | swift-contrib-f53a1ef582494458301b97bf6e546be52d7ff7e8.zip swift-contrib-f53a1ef582494458301b97bf6e546be52d7ff7e8.tar.bz2 |
Moving submodule contents back.
Diffstat (limited to '3rdParty/Boost/src/boost/utility/swap.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/utility/swap.hpp | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/utility/swap.hpp b/3rdParty/Boost/src/boost/utility/swap.hpp new file mode 100644 index 0000000..6845e79 --- /dev/null +++ b/3rdParty/Boost/src/boost/utility/swap.hpp @@ -0,0 +1,55 @@ +// 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 + + +#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. + +#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); + } +} + +#endif |