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author | Kevin Smith <git@kismith.co.uk> | 2013-01-12 18:41:34 (GMT) |
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committer | Swift Review <review@swift.im> | 2013-01-13 10:36:26 (GMT) |
commit | f3bc816af1b0d61452de973963e453bf3b3f95a2 (patch) | |
tree | e895f8afa3580e6cff6f5ad2017d45bf147a17c2 /3rdParty/Boost/src/boost/spirit/home/support/detail/as_variant.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/spirit/home/support/detail/as_variant.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/spirit/home/support/detail/as_variant.hpp | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/spirit/home/support/detail/as_variant.hpp b/3rdParty/Boost/src/boost/spirit/home/support/detail/as_variant.hpp new file mode 100644 index 0000000..e2fe18d --- /dev/null +++ b/3rdParty/Boost/src/boost/spirit/home/support/detail/as_variant.hpp @@ -0,0 +1,104 @@ +/*============================================================================= + 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) +==============================================================================*/ +#ifndef BOOST_PP_IS_ITERATING +#if !defined(BOOST_SPIRIT_AS_VARIANT_NOVEMBER_16_2007_0420PM) +#define BOOST_SPIRIT_AS_VARIANT_NOVEMBER_16_2007_0420PM + +#include <boost/preprocessor/iterate.hpp> +#include <boost/preprocessor/repetition/enum_params.hpp> +#include <boost/preprocessor/repetition/enum_binary_params.hpp> +#include <boost/preprocessor/repetition/enum_params_with_a_default.hpp> +#include <boost/preprocessor/repetition/repeat_from_to.hpp> +#include <boost/variant/variant_fwd.hpp> +#include <boost/fusion/include/size.hpp> +#include <boost/fusion/include/begin.hpp> +#include <boost/fusion/include/next.hpp> +#include <boost/fusion/include/value_of.hpp> +#include <boost/mpl/fold.hpp> +#include <boost/mpl/vector.hpp> +#include <boost/mpl/push_back.hpp> +#include <boost/mpl/equal_to.hpp> +#include <boost/mpl/contains.hpp> +#include <boost/type_traits/is_same.hpp> + +namespace boost { namespace spirit { namespace detail +{ + template <int size> + struct as_variant_impl; + + template <> + struct as_variant_impl<0> + { + template <typename Iterator> + struct apply + { + typedef variant<> type; + }; + }; + +#define BOOST_FUSION_NEXT_ITERATOR(z, n, data) \ + typedef typename fusion::result_of::next<BOOST_PP_CAT(I, n)>::type \ + BOOST_PP_CAT(I, BOOST_PP_INC(n)); + +#define BOOST_FUSION_NEXT_CALL_ITERATOR(z, n, data) \ + typename gen::BOOST_PP_CAT(I, BOOST_PP_INC(n)) \ + BOOST_PP_CAT(i, BOOST_PP_INC(n)) = fusion::next(BOOST_PP_CAT(i, n)); + +#define BOOST_FUSION_VALUE_OF_ITERATOR(z, n, data) \ + typedef typename fusion::result_of::value_of<BOOST_PP_CAT(I, n)>::type \ + BOOST_PP_CAT(T, n); + +#define BOOST_PP_FILENAME_1 <boost/spirit/home/support/detail/as_variant.hpp> +#define BOOST_PP_ITERATION_LIMITS (1, BOOST_VARIANT_LIMIT_TYPES) +#include BOOST_PP_ITERATE() + +#undef BOOST_FUSION_NEXT_ITERATOR +#undef BOOST_FUSION_NEXT_CALL_ITERATOR +#undef BOOST_FUSION_VALUE_OF_ITERATOR + + template <typename Sequence> + struct as_variant + { + // build a variant generator being able to generate a variant holding + // all of the types as given in the typelist + typedef typename + detail::as_variant_impl<fusion::result_of::size<Sequence>::value> + gen; + + // use this generator to create the actual variant + typedef typename gen::template apply< + typename fusion::result_of::begin<Sequence>::type + >::type + type; + }; +}}} + +#endif +#else // defined(BOOST_PP_IS_ITERATING) +/////////////////////////////////////////////////////////////////////////////// +// +// Preprocessor vertical repetition code +// +/////////////////////////////////////////////////////////////////////////////// + +#define N BOOST_PP_ITERATION() + + template <> + struct as_variant_impl<N> + { + template <typename I0> + struct apply + { + BOOST_PP_REPEAT(N, BOOST_FUSION_NEXT_ITERATOR, _) + BOOST_PP_REPEAT(N, BOOST_FUSION_VALUE_OF_ITERATOR, _) + typedef variant<BOOST_PP_ENUM_PARAMS(N, T)> type; + }; + }; + +#undef N +#endif // defined(BOOST_PP_IS_ITERATING) + |