| // Boost.Geometry Index |
| // |
| // Copyright (c) 2011-2013 Adam Wulkiewicz, Lodz, Poland. |
| // |
| // Use, modification and distribution is subject to 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_GEOMETRY_INDEX_DETAIL_TRANSLATOR_HPP |
| #define BOOST_GEOMETRY_INDEX_DETAIL_TRANSLATOR_HPP |
| |
| namespace boost { namespace geometry { namespace index { |
| |
| namespace detail { |
| |
| template <typename IndexableGetter, typename EqualTo> |
| struct translator |
| : public IndexableGetter |
| , public EqualTo |
| { |
| typedef typename IndexableGetter::result_type result_type; |
| |
| translator(IndexableGetter const& i, EqualTo const& e) |
| : IndexableGetter(i), EqualTo(e) |
| {} |
| |
| template <typename Value> |
| result_type operator()(Value const& value) const |
| { |
| return IndexableGetter::operator()(value); |
| } |
| |
| template <typename Value> |
| bool equals(Value const& v1, Value const& v2) const |
| { |
| return EqualTo::operator()(v1, v2); |
| } |
| }; |
| |
| template <typename IndexableGetter> |
| struct result_type |
| { |
| typedef typename IndexableGetter::result_type type; |
| }; |
| |
| template <typename IndexableGetter> |
| struct indexable_type |
| { |
| typedef typename boost::remove_const< |
| typename boost::remove_reference< |
| typename result_type<IndexableGetter>::type |
| >::type |
| >::type type; |
| }; |
| |
| } // namespace detail |
| |
| }}} // namespace boost::geometry::index |
| |
| #endif // BOOST_GEOMETRY_INDEX_DETAIL_TRANSLATOR_HPP |