Initial Commit

2018-02-08 21:28:33 -05:00
commit 678c1d3966
14352 changed files with 3176737 additions and 0 deletions
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+/*=============================================================================
+    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_NEXT_IMPL_06052005_0900)
+#define FUSION_NEXT_IMPL_06052005_0900
+
+#include <boost/fusion/support/config.hpp>
+#include <boost/fusion/algorithm/query/detail/find_if.hpp>
+#include <boost/fusion/iterator/value_of.hpp>
+#include <boost/mpl/eval_if.hpp>
+#include <boost/mpl/identity.hpp>
+#include <boost/mpl/lambda.hpp>
+#include <boost/mpl/quote.hpp>
+#include <boost/mpl/bind.hpp>
+#include <boost/mpl/placeholders.hpp>
+
+namespace boost { namespace fusion
+{
+    struct filter_view_iterator_tag;
+
+    template <typename Category,  typename First, typename Last, typename Pred>
+    struct filter_iterator;
+
+    namespace extension
+    {
+        template <typename Tag>
+        struct next_impl;
+
+        template <>
+        struct next_impl<filter_view_iterator_tag>
+        {
+            template <typename Iterator>
+            struct apply
+            {
+                typedef typename Iterator::first_type first_type;
+                typedef typename Iterator::last_type last_type;
+                typedef typename Iterator::pred_type pred_type;
+                typedef typename Iterator::category category;
+
+                typedef typename
+                    mpl::eval_if<
+                        result_of::equal_to<first_type, last_type>
+                      , mpl::identity<last_type>
+                      , result_of::next<first_type>
+                    >::type
+                next_type;
+
+                typedef typename
+                    detail::static_find_if<
+                        next_type
+                      , last_type
+                      , mpl::bind1<
+                            typename mpl::lambda<pred_type>::type
+                          , mpl::bind1<mpl::quote1<result_of::value_of>,mpl::_1>
+                        >
+                    >
+                filter;
+
+                typedef filter_iterator<
+                    category, typename filter::type, last_type, pred_type>
+                type;
+
+                BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+                static type
+                call(Iterator const& i)
+                {
+                    return type(filter::iter_call(i.first));
+                }
+            };
+        };
+    }
+}}
+
+#endif
+
+