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1 | // Copyright 2002 The Trustees of Indiana University. |
2 | ||
3 | // Use, modification and distribution is subject to the Boost Software | |
4 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
5 | // http://www.boost.org/LICENSE_1_0.txt) | |
6 | ||
7 | // Boost.MultiArray Library | |
8 | // Authors: Ronald Garcia | |
9 | // Jeremy Siek | |
10 | // Andrew Lumsdaine | |
11 | // See http://www.boost.org/libs/multi_array for documentation. | |
12 | ||
13 | #ifndef COPY_ARRAY_RG092101_HPP | |
14 | #define COPY_ARRAY_RG092101_HPP | |
15 | ||
16 | // | |
17 | // copy_array.hpp - generic code for copying the contents of one | |
18 | // Basic_MultiArray to another. We assume that they are of the same | |
19 | // shape | |
20 | // | |
21 | #include "boost/type.hpp" | |
22 | #include "boost/assert.hpp" | |
23 | ||
24 | namespace boost { | |
25 | namespace detail { | |
26 | namespace multi_array { | |
27 | ||
28 | template <typename Element> | |
29 | class copy_dispatch { | |
30 | public: | |
31 | template <typename SourceIterator, typename DestIterator> | |
32 | static void copy_array (SourceIterator first, SourceIterator last, | |
33 | DestIterator result) { | |
34 | while (first != last) { | |
35 | copy_array(*first++,*result++); | |
36 | } | |
37 | } | |
38 | private: | |
39 | // Array2 has to be passed by VALUE here because subarray | |
40 | // pseudo-references are temporaries created by iterator::operator*() | |
41 | template <typename Array1, typename Array2> | |
42 | static void copy_array (const Array1& source, Array2 dest) { | |
43 | copy_array(source.begin(),source.end(),dest.begin()); | |
44 | } | |
45 | ||
46 | static void copy_array (const Element& source, Element& dest) { | |
47 | dest = source; | |
48 | } | |
49 | ||
50 | }; | |
51 | ||
52 | ||
53 | template <typename Array1, typename Array2> | |
54 | void copy_array (Array1& source, Array2& dest) { | |
55 | BOOST_ASSERT(std::equal(source.shape(),source.shape()+source.num_dimensions(), | |
56 | dest.shape())); | |
57 | // Dispatch to the proper function | |
58 | typedef typename Array1::element element_type; | |
59 | copy_dispatch<element_type>:: | |
60 | copy_array(source.begin(),source.end(),dest.begin()); | |
61 | } | |
62 | ||
63 | ||
64 | } // namespace multi_array | |
65 | } // namespace detail | |
66 | } // namespace boost | |
67 | ||
68 | #endif // COPY_ARRAY_RG092101_HPP |