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