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73 lines
2.1 KiB
73 lines
2.1 KiB
// |
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// Copyright (c) 2009 Rutger ter Borg |
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// |
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// Distributed under the Boost Software License, Version 1.0. |
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// (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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#ifndef BOOST_NUMERIC_BINDINGS_DETAIL_PROPERTY_MAP_HPP |
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#define BOOST_NUMERIC_BINDINGS_DETAIL_PROPERTY_MAP_HPP |
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#include <boost/mpl/at.hpp> |
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#include <boost/mpl/fold.hpp> |
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#include <boost/mpl/has_key.hpp> |
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#include <boost/mpl/insert.hpp> |
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#include <boost/mpl/vector.hpp> |
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#include <boost/numeric/bindings/detail/adaptor.hpp> |
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#include <boost/type_traits/is_same.hpp> |
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namespace boost { |
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namespace numeric { |
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namespace bindings { |
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namespace detail { |
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template< typename T, typename Key > |
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struct property_has_key: mpl::has_key< typename adaptor_access<T>::property_map, Key > {}; |
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template< typename T, typename Key > |
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struct property_at { |
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typedef typename mpl::at< typename adaptor_access<T>::property_map, Key >::type type; |
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}; |
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template< typename T > |
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struct property_map_of { |
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typedef typename adaptor_access<T>::property_map type; |
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}; |
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template< typename T, typename Key, typename Value > |
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struct is_same_at: is_same< typename property_at< T, Key >::type, Value > {}; |
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// |
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// Meta-function to insert multiple pairs into a map by using fold. Using the |
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// provided mpl::insert can (only) insert elements in a map one-by-one. |
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// |
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template< typename T, |
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typename P1 = mpl::na, typename P2 = mpl::na, typename P3 = mpl::na, |
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typename P4 = mpl::na, typename P5 = mpl::na, typename P6 = mpl::na, |
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typename P7 = mpl::na, typename P8 = mpl::na, typename P9 = mpl::na, |
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typename P10 = mpl::na > |
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struct property_insert { |
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typedef mpl::vector< P1, P2, P3, P4, P5, P6, P7, P8, P9, P10 > pair_vector; |
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typedef typename property_map_of< T >::type properties; |
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typedef typename mpl::fold< |
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pair_vector, |
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properties, |
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mpl::if_< |
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is_same< mpl::_2, mpl::void_ >, |
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mpl::_1, |
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mpl::insert< mpl::_1, mpl::_2 > |
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> |
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>::type type; |
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}; |
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} // namespace detail |
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} // namespace bindings |
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} // namespace numeric |
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} // namespace boost |
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#endif
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