1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
/*
Copyright 2023 Glen Joseph Fernandes
(glenjofe@gmail.com)
Distributed under the Boost Software License, Version 1.0.
(http://www.boost.org/LICENSE_1_0.txt)
*/
#include <boost/config.hpp>
#if !defined(BOOST_NO_CXX11_CONSTEXPR) && !defined(BOOST_NO_CXX11_DECLTYPE)
#include <boost/core/size.hpp>
#include <boost/core/lightweight_test.hpp>
#include <iterator>
struct range {
std::size_t size() const {
return 4;
}
};
void test_range()
{
range c;
BOOST_TEST_EQ(boost::size(c), 4);
}
void test_array()
{
int a[4];
BOOST_TEST_EQ(boost::size(a), 4);
}
void test_ambiguity_with_std_size()
{
// Note: This preprocessor check should be equivalent to that in boost/core/size.hpp
#if (defined(__cpp_lib_nonmember_container_access) && (__cpp_lib_nonmember_container_access >= 201411l)) || \
(defined(_MSC_VER) && (_MSC_VER >= 1900))
// https://github.com/boostorg/core/issues/206
range c;
using std::size;
using boost::size;
BOOST_TEST_EQ(size(c), c.size());
#endif
}
int main()
{
test_range();
test_array();
test_ambiguity_with_std_size();
return boost::report_errors();
}
#else
int main()
{
return 0;
}
#endif
|
