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//
14// fail_ref_cview.cpp
15// ensure const_array_view doesn't allow element assignment.
16//
17
18#include <boost/multi_array.hpp>
19
20#include <boost/core/lightweight_test.hpp>
21
22#include <boost/array.hpp>
23#include <boost/type.hpp>
24
25int
26main()
27{
28 const int ndims=3;
29 typedef boost::multi_array_ref<int,ndims> array_ref;
30
31 boost::array<array_ref::size_type,ndims> sma_dims = {.elems: {2,3,4}};
32
33 int data[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,
34 14,15,16,17,18,19,20,21,22,23};
35
36 array_ref sma(data,sma_dims);
37
38 //
39 // subarray dims:
40 // [base,stride,bound)
41 // [0,1,2), [1,1,3), [0,2,4)
42 //
43
44 const array_ref& csma = sma;
45 typedef array_ref::index_range range;
46 array_ref::index_gen indices;
47 array_ref::const_array_view<ndims>::type csma2 =
48 csma[indices[range(0,2)][range(1,3)][range(0,4,2)]];
49
50 boost::array<array_ref::index,3> elmt = {.elems: {0,0,0}};
51
52 csma2(elmt) = 5; // FAIL! csma is read only
53
54 return boost::report_errors();
55}
56
57
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63

source code of boost/libs/multi_array/test/fail_ref_cview.cpp