69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
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// Copyright 2002 The Trustees of Indiana University.
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// Use, modification and distribution is subject to the Boost Software
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// License, Version 1.0. (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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// Boost.MultiArray Library
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// Authors: Ronald Garcia
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// Jeremy Siek
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// Andrew Lumsdaine
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// See http://www.boost.org/libs/multi_array for documentation.
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#ifndef COPY_ARRAY_RG092101_HPP
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#define COPY_ARRAY_RG092101_HPP
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//
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// copy_array.hpp - generic code for copying the contents of one
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// Basic_MultiArray to another. We assume that they are of the same
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// shape
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//
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#include "boost/type.hpp"
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#include "boost/assert.hpp"
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namespace boost {
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namespace detail {
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namespace multi_array {
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template <typename Element>
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class copy_dispatch {
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public:
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template <typename SourceIterator, typename DestIterator>
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static void copy_array (SourceIterator first, SourceIterator last,
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DestIterator result) {
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while (first != last) {
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copy_array(*first++,*result++);
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}
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}
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private:
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// Array2 has to be passed by VALUE here because subarray
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// pseudo-references are temporaries created by iterator::operator*()
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template <typename Array1, typename Array2>
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static void copy_array (const Array1& source, Array2 dest) {
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copy_array(source.begin(),source.end(),dest.begin());
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}
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static void copy_array (const Element& source, Element& dest) {
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dest = source;
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}
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};
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template <typename Array1, typename Array2>
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void copy_array (Array1& source, Array2& dest) {
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BOOST_ASSERT(std::equal(source.shape(),source.shape()+source.num_dimensions(),
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dest.shape()));
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// Dispatch to the proper function
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typedef typename Array1::element element_type;
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copy_dispatch<element_type>::
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copy_array(source.begin(),source.end(),dest.begin());
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}
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} // namespace multi_array
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} // namespace detail
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} // namespace boost
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#endif // COPY_ARRAY_RG092101_HPP
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