// Copyright 2002 The Trustees of Indiana University.

// Use, modification and distribution is subject to 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)

// Boost.MultiArray Library

// Authors: Ronald Garcia

// Jeremy Siek

// Andrew Lumsdaine

// See http://www.boost.org/libs/multi_array for documentation.

#ifndef COPY_ARRAY_RG092101_HPP

#define COPY_ARRAY_RG092101_HPP

//

// copy_array.hpp - generic code for copying the contents of one

// Basic_MultiArray to another. We assume that they are of the same

// shape

//

#include "boost/type.hpp"

#include "boost/assert.hpp"

namespace boost {

namespace detail {

namespace multi_array {

template <typename Element>

class copy_dispatch {

public:

template <typename SourceIterator, typename DestIterator>

static void copy_array (SourceIterator first, SourceIterator last,

DestIterator result) {

while (first != last) {

copy_array(*first++,*result++);

}

}

private:

// Array2 has to be passed by VALUE here because subarray

// pseudo-references are temporaries created by iterator::operator*()

template <typename Array1, typename Array2>

static void copy_array (const Array1& source, Array2 dest) {

copy_array(source.begin(),source.end(),dest.begin());

}

static void copy_array (const Element& source, Element& dest) {

dest = source;

}

};

template <typename Array1, typename Array2>

void copy_array (Array1& source, Array2& dest) {

BOOST_ASSERT(std::equal(source.shape(),source.shape()+source.num_dimensions(),

dest.shape()));

// Dispatch to the proper function

typedef typename Array1::element element_type;

copy_dispatch<element_type>::

copy_array(source.begin(),source.end(),dest.begin());

}

} // namespace multi_array

} // namespace detail

} // namespace boost

#endif // COPY_ARRAY_RG092101_HPP