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//
// Copyright (c) 2010 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_BOOST_MULTI_ARRAY_HPP
#define BOOST_NUMERIC_BINDINGS_BOOST_MULTI_ARRAY_HPP
#include <boost/numeric/bindings/detail/adaptor.hpp>
#include <boost/multi_array.hpp>
#include <boost/mpl/range_c.hpp>
namespace boost {
namespace numeric {
namespace bindings {
namespace detail {
template< typename Map, typename AddressingIndex >
struct multi_array_dim_inserter {
typedef typename mpl::insert<
typename mpl::insert<
Map,
mpl::pair< tag::size_type< AddressingIndex::value >, std::ptrdiff_t >
>::type,
mpl::pair< tag::stride_type< AddressingIndex::value >, std::ptrdiff_t >
>::type type;
};
template< typename T, std::size_t Dim, typename Alloc, typename Id, typename Enable >
struct adaptor< boost::multi_array<T,Dim,Alloc>, Id, Enable > {
typedef typename copy_const< Id, T >::type value_type;
typedef mpl::map<
mpl::pair< tag::value_type, value_type >,
mpl::pair< tag::entity, tag::tensor< Dim > >,
mpl::pair< tag::data_order, tag::row_major >,
mpl::pair< tag::data_structure, tag::linear_array >
> basic_map;
typedef typename mpl::fold<
mpl::range_c< std::size_t, 1, Dim+1 >,
basic_map,
multi_array_dim_inserter<
mpl::_1,
mpl::_2
>
>::type property_map;
// Sizes are only reachable if Addressing Index <= Dim, otherwise
// the default (1) will be returned
static std::ptrdiff_t size1( const Id& id ) {
return id.shape()[0];
}
static std::ptrdiff_t size2( const Id& id ) {
return id.shape()[1];
}
static std::ptrdiff_t stride1( const Id& id ) {
return id.strides()[0];
}
// Only reachable if dimension D is sufficient
static std::ptrdiff_t stride2( const Id& id ) {
return id.strides()[1];
}
static value_type* begin_value( Id& id ) {
return id.data();
}
static value_type* end_value( Id& id ) {
return id.data()+id.num_elements();
}
};
} // namespace detail
} // namespace bindings
} // namespace numeric
} // namespace boost
#endif
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