Point Cloud Library (PCL)  1.3.1
for_each_type.h
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00001 /*
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00034  * $Id: for_each_type.h 1370 2011-06-19 01:06:01Z jspricke $
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00037 
00038 #ifndef PCL_FOR_EACH_TYPE_H_
00039 #define PCL_FOR_EACH_TYPE_H_
00040 
00041 #include <boost/mpl/is_sequence.hpp>
00042 #include <boost/mpl/begin_end.hpp>
00043 #include <boost/mpl/next_prior.hpp>
00044 #include <boost/mpl/deref.hpp>
00045 #include <boost/mpl/assert.hpp>
00046 #include <boost/mpl/remove_if.hpp>
00047 #include <boost/mpl/contains.hpp>
00048 #include <boost/mpl/not.hpp>
00049 #include <boost/mpl/aux_/unwrap.hpp>
00050 #include <boost/type_traits/is_same.hpp>
00051 
00052 namespace pcl 
00053 {
00055   template <bool done = true>
00056   struct for_each_type_impl
00057   {
00058     template<typename Iterator, typename LastIterator, typename F>
00059     static void execute (F) {}
00060   };
00061 
00063   template <>
00064   struct for_each_type_impl<false>
00065   {
00066     template<typename Iterator, typename LastIterator, typename F>
00067     static void execute (F f)
00068     {
00069       typedef typename boost::mpl::deref<Iterator>::type arg;
00070 
00071 #if (defined _WIN32 && defined _MSC_VER)
00072       boost::mpl::aux::unwrap (f, 0).operator()<arg> ();
00073 #else
00074       boost::mpl::aux::unwrap (f, 0).template operator()<arg> ();
00075 #endif
00076 
00077       typedef typename boost::mpl::next<Iterator>::type iter;
00078       for_each_type_impl<boost::is_same<iter, LastIterator>::value>
00079         ::template execute<iter, LastIterator, F> (f);
00080     }
00081   };
00082 
00084   template<typename Sequence, typename F>
00085   inline void for_each_type (F f)
00086   {
00087     BOOST_MPL_ASSERT (( boost::mpl::is_sequence<Sequence> ));
00088     typedef typename boost::mpl::begin<Sequence>::type first;
00089     typedef typename boost::mpl::end<Sequence>::type last;
00090     for_each_type_impl< boost::is_same<first, last>::value >::template execute<first, last, F> (f);
00091   }
00092 
00094   template<typename Sequence1, typename Sequence2>
00095   struct intersect 
00096   { 
00097     typedef typename boost::mpl::remove_if<Sequence1, boost::mpl::not_<boost::mpl::contains<Sequence2, boost::mpl::_1> > >::type type; 
00098   }; 
00099 }
00100 
00101 #endif  //#ifndef PCL_FOR_EACH_TYPE_H_
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