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/container/list/detail/at_impl.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/container/list/detail/at_impl.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/fusion/container/list/detail/at_impl.hpp | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/fusion/container/list/detail/at_impl.hpp b/3rdParty/Boost/src/boost/fusion/container/list/detail/at_impl.hpp new file mode 100644 index 0000000..7574639 --- /dev/null +++ b/3rdParty/Boost/src/boost/fusion/container/list/detail/at_impl.hpp @@ -0,0 +1,132 @@ +/*============================================================================= + 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_AT_IMPL_07172005_0726) +#define FUSION_AT_IMPL_07172005_0726 + +#include <boost/fusion/support/detail/access.hpp> +#include <boost/type_traits/is_const.hpp> +#include <boost/type_traits/add_const.hpp> +#include <boost/mpl/if.hpp> +#include <boost/mpl/bool.hpp> + +namespace boost { namespace fusion +{ + namespace detail + { + template <typename Cons> + struct cons_deref + { + typedef typename Cons::car_type type; + }; + + template <typename Cons, int I> + struct cons_advance + { + typedef typename + cons_advance<Cons, I-1>::type::cdr_type + type; + }; + + template <typename Cons> + struct cons_advance<Cons, 0> + { + typedef Cons type; + }; + + template <typename Cons> + struct cons_advance<Cons, 1> + { + typedef typename Cons::cdr_type type; + }; + + template <typename Cons> + struct cons_advance<Cons, 2> + { +#if BOOST_WORKAROUND(BOOST_MSVC, > 1400) // VC8 and above + typedef typename Cons::cdr_type::cdr_type type; +#else + typedef typename Cons::cdr_type _a; + typedef typename _a::cdr_type type; +#endif + }; + + template <typename Cons> + struct cons_advance<Cons, 3> + { +#if BOOST_WORKAROUND(BOOST_MSVC, > 1400) // VC8 and above + typedef typename Cons::cdr_type::cdr_type::cdr_type type; +#else + typedef typename Cons::cdr_type _a; + typedef typename _a::cdr_type _b; + typedef typename _b::cdr_type type; +#endif + }; + + template <typename Cons> + struct cons_advance<Cons, 4> + { +#if BOOST_WORKAROUND(BOOST_MSVC, > 1400) // VC8 and above + typedef typename Cons::cdr_type::cdr_type::cdr_type::cdr_type type; +#else + typedef typename Cons::cdr_type _a; + typedef typename _a::cdr_type _b; + typedef typename _b::cdr_type _c; + typedef typename _c::cdr_type type; +#endif + }; + } + + struct cons_tag; + + namespace extension + { + template <typename Tag> + struct at_impl; + + template <> + struct at_impl<cons_tag> + { + template <typename Sequence, typename N> + struct apply + { + typedef typename detail::cons_deref< + typename detail::cons_advance<Sequence, N::value>::type>::type + element; + + typedef typename + mpl::if_< + is_const<Sequence> + , typename detail::cref_result<element>::type + , typename detail::ref_result<element>::type + >::type + type; + + template <typename Cons, int N2> + static type + call(Cons& s, mpl::int_<N2>) + { + return call(s.cdr, mpl::int_<N2-1>()); + } + + template <typename Cons> + static type + call(Cons& s, mpl::int_<0>) + { + return s.car; + } + + static type + call(Sequence& s) + { + return call(s, mpl::int_<N::value>()); + } + }; + }; + } +}} + +#endif |