1 // Copyright 2019 Hans Dembinski
2 //
3 // Distributed under the Boost Software License, Version 1.0.
4 // (See accompanying file LICENSE_1_0.txt
5 // or copy at http://www.boost.org/LICENSE_1_0.txt)
6
7 #include <boost/archive/binary_iarchive.hpp>
8 #include <boost/archive/binary_oarchive.hpp>
9 #include <boost/archive/text_iarchive.hpp>
10 #include <boost/archive/text_oarchive.hpp>
11 #include <boost/core/lightweight_test.hpp>
12 #include <boost/histogram/detail/array_wrapper.hpp>
13 #include <sstream>
14 #include <vector>
15 #include "std_ostream.hpp"
16 #include "throw_exception.hpp"
17
18 namespace dtl = boost::histogram::detail;
19 namespace ba = boost::archive;
20
21 template <class T>
22 struct dummy_array_wrapper {
23 T* ptr;
24 std::size_t size;
25 template <class Archive>
serializedummy_array_wrapper26 void serialize(Archive& ar, unsigned /* version */) {
27 for (auto&& x : dtl::make_span(ptr, size)) ar& x;
28 }
29 };
30
31 template <class OArchive, class IArchive>
run_tests()32 void run_tests() {
33 std::vector<int> v = {{1, 2, 3}};
34
35 std::stringstream os1;
36 {
37 OArchive oa(os1);
38 auto w = dtl::make_array_wrapper(v.data(), v.size());
39 oa << w;
40 }
41
42 std::ostringstream os2;
43 {
44 OArchive oa(os2);
45 auto w = dummy_array_wrapper<int>{v.data(), v.size()};
46 oa << w;
47 }
48
49 BOOST_TEST_EQ(os1.str(), os2.str());
50
51 std::vector<int> v2(3, 0);
52 {
53 IArchive ia(os1);
54 auto w = dtl::make_array_wrapper(v2.data(), v2.size());
55 ia >> w;
56 }
57
58 BOOST_TEST_EQ(v, v2);
59 }
60
main()61 int main() {
62 BOOST_TEST(dtl::has_array_optimization<ba::binary_oarchive>::value);
63 BOOST_TEST(dtl::has_array_optimization<ba::binary_iarchive>::value);
64 BOOST_TEST_NOT(dtl::has_array_optimization<ba::text_oarchive>::value);
65 BOOST_TEST_NOT(dtl::has_array_optimization<ba::text_iarchive>::value);
66
67 run_tests<ba::binary_oarchive, ba::binary_iarchive>();
68 run_tests<ba::text_oarchive, ba::text_iarchive>();
69
70 return boost::report_errors();
71 }
72