Swiftdiff options
| author | Kevin Smith <git@kismith.co.uk> | 2013-01-12 18:41:34 (GMT) |
|---|---|---|
| committer | Swift Review <review@swift.im> | 2013-01-13 10:36:26 (GMT) |
| commit | f3bc816af1b0d61452de973963e453bf3b3f95a2 (patch) | |
| tree | e895f8afa3580e6cff6f5ad2017d45bf147a17c2 /3rdParty/Boost/src/boost/fusion/iterator/detail/advance.hpp | |
| parent | 188fc285c6555eadd3c9d50ab8a94adcade78d89 (diff) | |
| download | swift-f3bc816af1b0d61452de973963e453bf3b3f95a2.zip swift-f3bc816af1b0d61452de973963e453bf3b3f95a2.tar.bz2 | |
Adding in the spirit Boost stuff
Change-Id: I4f127ce61667243b64081b0aa309028d5077045f
Diffstat (limited to '3rdParty/Boost/src/boost/fusion/iterator/detail/advance.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/fusion/iterator/detail/advance.hpp | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/fusion/iterator/detail/advance.hpp b/3rdParty/Boost/src/boost/fusion/iterator/detail/advance.hpp new file mode 100644 index 0000000..56dfab9 --- /dev/null +++ b/3rdParty/Boost/src/boost/fusion/iterator/detail/advance.hpp @@ -0,0 +1,102 @@ +/*============================================================================= + Copyright (c) 2001-2011 Joel de Guzman + + 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) +==============================================================================*/ +#if !defined(FUSION_ADVANCE_09172005_1149) +#define FUSION_ADVANCE_09172005_1149 + +#include <boost/mpl/int.hpp> +#include <boost/mpl/if.hpp> +#include <boost/mpl/eval_if.hpp> +#include <boost/mpl/identity.hpp> +#include <boost/fusion/iterator/next.hpp> +#include <boost/fusion/iterator/prior.hpp> + +namespace boost { namespace fusion { namespace advance_detail +{ + // Default advance implementation, perform next(i) + // or prior(i) N times. + + template <typename Iterator, int N> + struct forward; + + template <typename Iterator, int N> + struct next_forward + { + typedef typename + forward< + typename result_of::next<Iterator>::type + , N-1 + >::type + type; + }; + + template <typename Iterator, int N> + struct forward + { + typedef typename + mpl::eval_if_c< + (N == 0) + , mpl::identity<Iterator> + , next_forward<Iterator, N> + >::type + type; + + static type const& + call(type const& i) + { + return i; + } + + template <typename I> + static type + call(I const& i) + { + return call(fusion::next(i)); + } + }; + + template <typename Iterator, int N> + struct backward; + + template <typename Iterator, int N> + struct next_backward + { + typedef typename + backward< + typename result_of::prior<Iterator>::type + , N+1 + >::type + type; + }; + + template <typename Iterator, int N> + struct backward + { + typedef typename + mpl::eval_if_c< + (N == 0) + , mpl::identity<Iterator> + , next_backward<Iterator, N> + >::type + type; + + static type const& + call(type const& i) + { + return i; + } + + template <typename I> + static type + call(I const& i) + { + return call(fusion::prior(i)); + } + }; + +}}} + +#endif |