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