forked from boostorg/fusion
Initial move from Spirit CVS
[SVN r34896]
This commit is contained in:
Joel de Guzman
66
include/boost/fusion/algorithm/iteration/accumulate.hpp
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66
include/boost/fusion/algorithm/iteration/accumulate.hpp
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/*=============================================================================
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Copyright (c) 2001-2006 Joel de Guzman
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Use, modification and distribution is subject to the Boost Software
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License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#if !defined(FUSION_ACCUMULATE_09172005_1032)
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#define FUSION_ACCUMULATE_09172005_1032
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#include <boost/fusion/algorithm/iteration/detail/fold.hpp>
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#include <boost/fusion/sequence/intrinsic/size.hpp>
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namespace boost { namespace fusion
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{
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struct void_;
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namespace result_of
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{
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template <typename Sequence, typename State, typename F>
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struct accumulate
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{
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typedef typename
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detail::static_fold<
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typename result_of::begin<Sequence>::type
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, typename result_of::end<Sequence>::type
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, State
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, F
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>::type
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type;
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};
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}
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template <typename Sequence, typename State, typename F>
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inline typename result_of::accumulate<Sequence, State, F>::type
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accumulate(Sequence& seq, State const& state, F const& f)
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{
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return detail::fold(
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fusion::begin(seq)
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, fusion::end(seq)
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, state
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, f
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, is_same<
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typename result_of::begin<Sequence>::type
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, typename result_of::end<Sequence>::type>()
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);
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}
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template <typename Sequence, typename State, typename F>
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inline typename result_of::accumulate<Sequence const, State, F>::type
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accumulate(Sequence const& seq, State const& state, F const& f)
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{
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return detail::fold(
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fusion::begin(seq)
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, fusion::end(seq)
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, state
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, f
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, is_same<
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typename result_of::begin<Sequence const>::type
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, typename result_of::end<Sequence const>::type>()
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);
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}
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}}
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#endif
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99
include/boost/fusion/algorithm/iteration/detail/fold.hpp
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99
include/boost/fusion/algorithm/iteration/detail/fold.hpp
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/*=============================================================================
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Copyright (c) 2001-2006 Joel de Guzman
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Use, modification and distribution is subject to the Boost Software
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License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#if !defined(FUSION_FOLD_05052005_1211)
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#define FUSION_FOLD_05052005_1211
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#include <boost/mpl/bool.hpp>
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#include <boost/mpl/apply.hpp>
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#include <boost/mpl/identity.hpp>
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#include <boost/fusion/iterator/equal_to.hpp>
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#include <boost/fusion/sequence/intrinsic/begin.hpp>
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#include <boost/fusion/sequence/intrinsic/end.hpp>
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#include <boost/fusion/iterator/deref.hpp>
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#include <boost/fusion/iterator/value_of.hpp>
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#include <boost/fusion/iterator/next.hpp>
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namespace boost { namespace fusion { namespace detail
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{
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// Unary arguments version
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template <typename F>
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struct apply_fold_result
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{
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template <typename Value, typename State>
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struct apply
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{
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typedef typename F::template result<Value, State>::type type;
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};
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};
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template <typename Iterator, typename State, typename F>
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struct fold_apply
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: mpl::apply<apply_fold_result<F>, typename result_of::value_of<Iterator>::type, State>
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{};
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template <typename First, typename Last, typename State, typename F>
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struct static_fold;
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template <typename First, typename Last, typename State, typename F>
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struct next_result_of_fold
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{
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typedef typename
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static_fold<
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typename result_of::next<First>::type
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, Last
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, typename fold_apply<First, State, F>::type
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, F
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>::type
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type;
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};
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template <typename First, typename Last, typename State, typename F>
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struct static_fold
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{
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typedef typename
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mpl::if_<
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result_of::equal_to<First, Last>
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, mpl::identity<State>
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, next_result_of_fold<First, Last, State, F>
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>::type
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result;
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typedef typename result::type type;
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};
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// terminal case
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template <typename First, typename Last, typename State, typename F>
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inline State const&
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fold(First const&, Last const&, State const& state, F const&, mpl::true_)
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{
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return state;
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}
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// non-terminal case
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template <typename First, typename Last, typename State, typename F>
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inline typename static_fold<First, Last, State, F>::type
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fold(
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First const& first
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, Last const& last
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, State const& state
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, F const& f
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, mpl::false_)
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{
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return detail::fold(
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fusion::next(first)
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, last
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, f(*first, state)
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, f
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, result_of::equal_to<typename result_of::next<First>::type, Last>()
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);
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}
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}}}
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#endif
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35
include/boost/fusion/algorithm/iteration/detail/for_each.hpp
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35
include/boost/fusion/algorithm/iteration/detail/for_each.hpp
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@ -0,0 +1,35 @@
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/*=============================================================================
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Copyright (c) 2001-2006 Joel de Guzman
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Use, modification and distribution is subject to the Boost Software
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License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#if !defined(FUSION_FOR_EACH_05052005_1028)
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#define FUSION_FOR_EACH_05052005_1028
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#include <boost/mpl/bool.hpp>
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#include <boost/fusion/iterator/equal_to.hpp>
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#include <boost/fusion/iterator/next.hpp>
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#include <boost/fusion/iterator/deref.hpp>
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namespace boost { namespace fusion { namespace detail
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{
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template <typename First, typename Last, typename F>
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inline void
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for_each(First const&, Last const&, F const&, mpl::true_)
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{
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}
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template <typename First, typename Last, typename F>
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inline void
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for_each(First const& first, Last const& last, F const& f, mpl::false_)
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{
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f(*first);
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detail::for_each(fusion::next(first), last, f
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, result_of::equal_to<typename result_of::next<First>::type, Last>());
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}
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}}}
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#endif
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67
include/boost/fusion/algorithm/iteration/fold.hpp
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67
include/boost/fusion/algorithm/iteration/fold.hpp
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@ -0,0 +1,67 @@
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/*=============================================================================
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Copyright (c) 2001-2006 Joel de Guzman
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Use, modification and distribution is subject to the Boost Software
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License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#if !defined(FUSION_FOLD_05052005_1214)
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#define FUSION_FOLD_05052005_1214
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#include <boost/fusion/algorithm/iteration/detail/fold.hpp>
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#include <boost/fusion/sequence/intrinsic/size.hpp>
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#include <boost/static_assert.hpp>
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namespace boost { namespace fusion
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{
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struct void_;
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namespace result_of
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{
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template <typename Sequence, typename State, typename F>
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struct fold
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{
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typedef typename
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detail::static_fold<
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typename result_of::begin<Sequence>::type
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, typename result_of::end<Sequence>::type
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, State
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, F
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>::type
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type;
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};
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}
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template <typename Sequence, typename State, typename F>
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inline typename result_of::fold<Sequence, State, F>::type
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fold(Sequence& seq, State const& state, F const& f)
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{
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return detail::fold(
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fusion::begin(seq)
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, fusion::end(seq)
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, state
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, f
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, is_same<
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typename result_of::begin<Sequence>::type
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, typename result_of::end<Sequence>::type>()
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);
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}
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template <typename Sequence, typename State, typename F>
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inline typename result_of::fold<Sequence const, State, F>::type
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fold(Sequence const& seq, State const& state, F const& f)
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{
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return detail::fold(
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fusion::begin(seq)
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, fusion::end(seq)
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, state
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, f
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, is_same<
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typename result_of::begin<Sequence const>::type
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, typename result_of::end<Sequence const>::type>()
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);
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}
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}}
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#endif
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55
include/boost/fusion/algorithm/iteration/for_each.hpp
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55
include/boost/fusion/algorithm/iteration/for_each.hpp
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@ -0,0 +1,55 @@
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/*=============================================================================
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Copyright (c) 2001-2006 Joel de Guzman
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Use, modification and distribution is subject to the Boost Software
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License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#if !defined(FUSION_FOR_EACH_05052005_1027)
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#define FUSION_FOR_EACH_05052005_1027
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#include <boost/fusion/sequence/intrinsic/begin.hpp>
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#include <boost/fusion/sequence/intrinsic/end.hpp>
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#include <boost/fusion/iterator/equal_to.hpp>
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#include <boost/fusion/algorithm/iteration/detail/for_each.hpp>
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namespace boost { namespace fusion
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{
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namespace result_of
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{
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template <typename Sequence, typename F>
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struct for_each
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{
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typedef void type;
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};
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}
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template <typename Sequence, typename F>
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inline void
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for_each(Sequence& seq, F const& f)
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{
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detail::for_each(
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fusion::begin(seq)
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, fusion::end(seq)
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, f
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, result_of::equal_to<
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typename result_of::begin<Sequence>::type
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, typename result_of::end<Sequence>::type>());
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}
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template <typename Sequence, typename F>
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inline void
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for_each(Sequence const& seq, F const& f)
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{
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detail::for_each(
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fusion::begin(seq)
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, fusion::end(seq)
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, f
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, result_of::equal_to<
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typename result_of::begin<Sequence const>::type
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, typename result_of::end<Sequence const>::type>());
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}
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}}
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#endif
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