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_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 | |
25 | int |
26 | main() |
27 | { |
28 | const int ndims=3; |
29 | typedef boost::multi_array<int,ndims> array; |
30 | |
31 | boost::array<array::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 | const int data_size = 24; |
36 | |
37 | array sma(sma_dims); |
38 | sma.assign(begin: data,end: data+data_size); |
39 | |
40 | // |
41 | // subarray dims: |
42 | // [base,stride,bound) |
43 | // [0,1,2), [1,1,3), [0,2,4) |
44 | // |
45 | |
46 | const array& csma = sma; |
47 | typedef array::index_range range; |
48 | array::index_gen indices; |
49 | array::const_array_view<ndims>::type csma2 = |
50 | csma[indices[range(0,2)][range(1,3)][range(0,4,2)]]; |
51 | |
52 | boost::array<array::index,3> elmt = {.elems: {0,0,0}}; |
53 | |
54 | // FAIL! const_array_view cannot be assigned to. |
55 | csma2(elmt) = 5; |
56 | |
57 | return boost::report_errors(); |
58 | } |
59 | |
60 | |
61 | |
62 | |
63 | |
64 | |
65 | |
66 | |