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- // Boost.Convert test and usage example
- // Copyright (c) 2009-2016 Vladimir Batov.
- // Use, modification and distribution are subject to the Boost Software License,
- // Version 1.0. See http://www.boost.org/LICENSE_1_0.txt.
- #include "./test.hpp"
- #if defined(BOOST_CONVERT_IS_NOT_SUPPORTED)
- int main(int, char const* []) { return 0; }
- #else
- #include <boost/convert.hpp>
- #include <boost/convert/stream.hpp>
- #include <boost/detail/lightweight_test.hpp>
- #include <boost/array.hpp>
- #include <vector>
- using std::string;
- using std::wstring;
- static
- void
- test_user_type()
- {
- boost::cnv::cstream cnv; // stringstream-based char converter
- direction const up_dir1 = direction::up;
- direction const dn_dir1 = direction::dn;
- // string const up_dir0_str = boost::convert<string, direction>(direction::up, cnv).value();
- // string const dn_dir0_str = boost::convert<string, direction>(direction::dn, cnv).value();
- string const up_dir1_str = boost::convert<string>(up_dir1, cnv).value();
- string const dn_dir1_str = boost::convert<string>(dn_dir1, cnv).value();
- direction const up_dir2 = boost::convert<direction>(up_dir1_str, cnv).value();
- direction const dn_dir2 = boost::convert<direction>(dn_dir1_str, cnv).value();
- direction const up_dir3 = boost::convert<direction>(up_dir1_str, cnv).value();
- direction const dn_dir3 = boost::convert<direction>(dn_dir1_str, cnv).value();
- direction const dn_dir4 = boost::convert<direction>("junk", cnv).value_or(direction::dn);
- boost::optional<direction> up_dir4 = boost::convert<direction>("junk", cnv);
- // BOOST_TEST(up_dir0_str == "up");
- // BOOST_TEST(dn_dir0_str == "dn");
- BOOST_TEST(up_dir1_str == "up");
- BOOST_TEST(dn_dir1_str == "dn");
- BOOST_TEST(up_dir2 == up_dir1);
- BOOST_TEST(dn_dir2 == dn_dir1);
- BOOST_TEST(up_dir3 == direction::up);
- BOOST_TEST(dn_dir3 == direction::dn);
- BOOST_TEST(dn_dir4 == direction::dn);
- BOOST_TEST(!up_dir4); // Failed conversion
- }
- static
- void
- test_algorithms()
- {
- //[algorithm_example6
- boost::array<change, 3> chgs1 = {{ change::no, change::up, change::dn }};
- boost::array<change::value_type, 3> chgs2 = {{ change::no, change::up, change::dn }};
- std::vector<std::string> strs1;
- std::vector<std::string> strs2;
- std::vector<std::string> strs3;
- boost::cnv::cstream cnv;
- std::transform(chgs1.begin(), chgs1.end(), std::back_inserter(strs1),
- boost::cnv::apply<string>(boost::cref(cnv))); // Deduced TypeIn is 'change'
- std::transform(chgs2.begin(), chgs2.end(), std::back_inserter(strs2),
- boost::cnv::apply<string>(boost::cref(cnv))); // Deduced TypeIn is 'change::value_type'
- BOOST_TEST(strs1.size() == 3);
- BOOST_TEST(strs1[0] == "no");
- BOOST_TEST(strs1[1] == "up");
- BOOST_TEST(strs1[2] == "dn");
- BOOST_TEST(strs2.size() == 3);
- BOOST_TEST(strs2[0] == "0");
- BOOST_TEST(strs2[1] == "1");
- BOOST_TEST(strs2[2] == "2");
- //]
- //[algorithm_example7
- std::transform(chgs2.begin(), chgs2.end(), std::back_inserter(strs3),
- boost::cnv::apply<string, change>(boost::cref(cnv)));
- BOOST_TEST(strs3.size() == 3);
- BOOST_TEST(strs3[0] == "no");
- BOOST_TEST(strs3[1] == "up");
- BOOST_TEST(strs3[2] == "dn");
- //]
- }
- int
- main(int, char const* [])
- {
- test_user_type();
- test_algorithms();
- return boost::report_errors();
- }
- #endif
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