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53 lines
1.4 KiB
53 lines
1.4 KiB
6 years ago
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//
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// Copyright (c) 2010 by 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_HAS_STATIC_STRIDE_HPP
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#define BOOST_NUMERIC_BINDINGS_HAS_STATIC_STRIDE_HPP
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#include <boost/numeric/bindings/detail/property_map.hpp>
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#include <boost/numeric/bindings/tag.hpp>
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#include <boost/mpl/count_if.hpp>
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#include <boost/mpl/equal_to.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 >
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struct is_static_stride_property: mpl::false_ {};
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template< int N, int M >
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struct is_static_stride_property< mpl::pair< tag::stride_type<N>, mpl::int_<M> > >: mpl::true_ {};
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} // namespace detail
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template< typename T, typename Enable = void >
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struct has_static_stride: mpl::false_ {};
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template< typename T >
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struct has_static_stride<
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T,
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typename boost::enable_if< detail::is_adaptable<T> >::type >:
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// count the number of static stride properties,
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// should be equal to the rank of the object
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mpl::equal_to<
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mpl::count_if<
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typename detail::property_map_of< T >::type,
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detail::is_static_stride_property< mpl::_ >
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>,
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typename detail::property_at< T, tag::entity >::type
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>::type {};
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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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