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84 lines
2.0 KiB
84 lines
2.0 KiB
6 years ago
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// Copyright (c) 2009 Rutger ter Borg
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// Copyright (c) 2010 Thomas Klimpel
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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_VECTOR_VIEW_HPP
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#define BOOST_NUMERIC_BINDINGS_VECTOR_VIEW_HPP
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#include <boost/numeric/bindings/detail/adaptable_type.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 vector_view_wrapper:
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adaptable_type< vector_view_wrapper<T> > {
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typedef T value_type;
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vector_view_wrapper( T* t, std::size_t size ):
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m_t( t ),
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m_size( size ) {}
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T* m_t;
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std::size_t m_size;
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};
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template< typename T, typename Id, typename Enable >
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struct adaptor< vector_view_wrapper<T>, Id, Enable > {
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typedef typename Id::value_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>, std::ptrdiff_t >,
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mpl::pair< tag::data_structure, tag::linear_array >,
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mpl::pair< tag::stride_type<1>, tag::contiguous >
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> property_map;
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static std::ptrdiff_t size1( const Id& id ) {
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return id.m_size;
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}
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static value_type* begin_value( Id& id ) {
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return id.m_t;
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}
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static value_type* end_value( Id& id ) {
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return id.m_t + id.m_size;
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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 vector_view {
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typedef detail::vector_view_wrapper<T> type;
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};
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} // namespace result_of
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template< typename T >
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detail::vector_view_wrapper<T> const vector_view( T* t, std::size_t size ) {
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return detail::vector_view_wrapper<T>( t, size );
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}
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template< typename T >
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detail::vector_view_wrapper<const T> const vector_view( const T* t, std::size_t size ) {
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return detail::vector_view_wrapper<const T>( t, size );
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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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