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96 lines
2.6 KiB
96 lines
2.6 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_COLUMN_HPP |
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#define BOOST_NUMERIC_BINDINGS_COLUMN_HPP |
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#include <boost/numeric/bindings/begin.hpp> |
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#include <boost/numeric/bindings/end.hpp> |
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#include <boost/numeric/bindings/detail/adaptable_type.hpp> |
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#include <boost/numeric/bindings/detail/offset.hpp> |
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#include <boost/numeric/bindings/size.hpp> |
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#include <boost/numeric/bindings/stride.hpp> |
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#include <boost/numeric/bindings/value_type.hpp> |
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#include <boost/ref.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 column_wrapper: |
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adaptable_type< column_wrapper<T> >, |
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reference_wrapper<T> { |
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column_wrapper( T& t, std::size_t index ): |
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reference_wrapper<T>(t), |
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m_index( index ) {} |
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std::size_t m_index; |
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}; |
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template< typename T, typename Id, typename Enable > |
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struct adaptor< column_wrapper<T>, Id, Enable > { |
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typedef typename bindings::value_type< T>::type value_type; |
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typedef mpl::map< |
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mpl::pair< tag::value_type, value_type >, |
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mpl::pair< tag::entity, tag::vector >, |
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mpl::pair< tag::size_type<1>, typename result_of::size1<T>::type >, |
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mpl::pair< tag::data_structure, tag::linear_array >, |
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mpl::pair< tag::stride_type<1>, typename result_of::stride1<T>::type > |
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> property_map; |
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static typename result_of::size1<T>::type size1( const Id& id ) { |
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return bindings::size1( id.get() ); |
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} |
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static typename result_of::begin_value< T >::type begin_value( Id& id ) { |
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return bindings::begin_value( id.get() ) + |
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offset( id.get(), 0, id.m_index ); |
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} |
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static typename result_of::end_value< T >::type end_value( Id& id ) { |
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return bindings::begin_value( id.get() ) + |
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offset( id.get(), size1(id), id.m_index ); |
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} |
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static typename result_of::stride1<T>::type stride1( const Id& id ) { |
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return bindings::stride1( id.get() ); |
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} |
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}; |
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} // namespace detail |
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namespace result_of { |
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template< typename T > |
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struct column { |
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typedef detail::column_wrapper<T> type; |
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}; |
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} |
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template< typename T > |
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detail::column_wrapper<T> const column( T& underlying, std::size_t index ) { |
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return detail::column_wrapper<T>( underlying, index ); |
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} |
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template< typename T > |
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detail::column_wrapper<const T> const column( const T& underlying, std::size_t index ) { |
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return detail::column_wrapper<const T>( underlying, index ); |
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} |
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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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