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Implemented size for joint_view

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[SVN r18469]
This commit is contained in:
Dave Abrahams
2003-05-20 13:04:08 +00:00
parent b7aa079241
commit 72a8746969
1 changed files with 23 additions and 1 deletions
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24
include/boost/mpl/joint_view.hpp
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@@ -20,10 +20,28 @@
#include "boost/mpl/aux_/joint_iter.hpp" #include "boost/mpl/aux_/joint_iter.hpp"
#include "boost/mpl/begin_end.hpp" #include "boost/mpl/begin_end.hpp"
#include "boost/mpl/aux_/void_spec.hpp" #include "boost/mpl/aux_/void_spec.hpp"
#include "boost/mpl/plus.hpp"
#include "boost/mpl/size_fwd.hpp"
namespace boost { namespace boost {
namespace mpl { namespace mpl {
namespace aux
{
struct joint_view_tag;
}
template <>
struct size_traits< aux::joint_view_tag >
{
template < typename JointView > struct algorithm
: plus<
size<typename JointView::sequence1>
, size<typename JointView::sequence2>
>
{};
};
template< template<
typename BOOST_MPL_AUX_VOID_SPEC_PARAM(Sequence1_) typename BOOST_MPL_AUX_VOID_SPEC_PARAM(Sequence1_)
, typename BOOST_MPL_AUX_VOID_SPEC_PARAM(Sequence2_) , typename BOOST_MPL_AUX_VOID_SPEC_PARAM(Sequence2_)
@@ -31,13 +49,17 @@ template<
struct joint_view struct joint_view
{ {
private: private:
friend struct size_traits< aux::joint_view_tag >;
typedef Sequence1_ sequence1;
typedef Sequence2_ sequence2;
typedef typename begin<Sequence1_>::type first1_; typedef typename begin<Sequence1_>::type first1_;
typedef typename end<Sequence1_>::type last1_; typedef typename end<Sequence1_>::type last1_;
typedef typename begin<Sequence2_>::type first2_; typedef typename begin<Sequence2_>::type first2_;
typedef typename end<Sequence2_>::type last2_; typedef typename end<Sequence2_>::type last2_;
public: public:
struct tag; typedef aux::joint_view_tag tag;
typedef typename aux::joint_iter<first1_,last1_,first2_> begin; typedef typename aux::joint_iter<first1_,last1_,first2_> begin;
typedef typename aux::joint_iter<last1_,last1_,last2_> end; typedef typename aux::joint_iter<last1_,last1_,last2_> end;
}; };