160 lines
9.2 KiB
C++
160 lines
9.2 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/detail/is_string.hpp>
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#include <boost/convert/detail/is_callable.hpp>
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#include <boost/detail/lightweight_test.hpp>
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//[is_callable_declaration
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namespace { namespace local
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{
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BOOST_DECLARE_IS_CALLABLE(can_call_funop, operator());
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BOOST_DECLARE_IS_CALLABLE(can_call_func, func);
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}}
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//]
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//[is_callable_classes_tested
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namespace { namespace callable
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{
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struct test1 { int operator()(double, std::string) { return 0; }};
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struct test2 { void operator()(double, std::string) {}};
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struct test3 { void operator()(int) {}};
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struct test4 { std::string operator()(int) const { return std::string(); }};
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struct test5 { std::string operator()(int, std::string const& =std::string()) const { return std::string(); }};
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struct test6 { template<typename T> std::string operator()(T) const { return std::string(); }};
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struct test7 { template<typename T> T operator()(T) const { return T(); }};
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struct test11 { int func(double, std::string) { return 0; }};
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struct test12 { void func(double, std::string) {}};
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struct test13 { void func(int) {}};
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struct test14 { std::string func(int) const { return std::string(); }};
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struct test15 { std::string func(int, std::string const& =std::string()) const { return std::string(); }};
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struct test16 { template<typename T> std::string func(T) const { return std::string(); }};
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struct test17 { template<typename T> T func(T) const { return T(); }};
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}}
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//]
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static
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void
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test_is_callable()
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{
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// C1. Unfortunately, passing 'double' where 'int' is expected returns 'true'.
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// The same as the following (which successfully compiles):
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// void fun(int) {}
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// fun(double(1));
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//[is_callable_usage1
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BOOST_TEST((local::can_call_funop<callable::test1, int (double, std::string)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test1, double (int, std::string)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test1, void (double, std::string)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test1, void (int, std::string)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test1, void (int, char const*)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test1, int (double, int)>::value == false));
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BOOST_TEST((local::can_call_funop<callable::test1, int (double)>::value == false));
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BOOST_TEST((local::can_call_funop<callable::test2, int (double, std::string)>::value == false));
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BOOST_TEST((local::can_call_funop<callable::test2, void (double, std::string)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test2, void ( int, std::string)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test2, void ( int, char const*)>::value == true));
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//]
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BOOST_TEST((local::can_call_funop<callable::test3, void (double)>::value == true)); //C1
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BOOST_TEST((local::can_call_funop<callable::test3, void (int)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test3 const, void (int)>::value == false));
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BOOST_TEST((local::can_call_funop<callable::test4 const, std::string (int)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test4, std::string (int)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test4 const, void (int)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test4, void (int)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test5, std::string (int, std::string)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test5, std::string (int, std::string const&)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test5, void (int, char const*)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test5, std::string (int)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test5 const, std::string (int)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test5, void (int)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test5 const, void (int)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test5, void (char const*)>::value == false));
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BOOST_TEST((local::can_call_funop<callable::test5 const, void (char const*)>::value == false));
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BOOST_TEST((local::can_call_funop<callable::test6, std::string (int)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test6, std::string (std::string)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test6, void (int)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test6, void (std::string)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test7, std::string (int)>::value == false));
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BOOST_TEST((local::can_call_funop<callable::test7, std::string (std::string)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test7, void (int)>::value == true));
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BOOST_TEST((local::can_call_funop<callable::test7, void (std::string)>::value == true));
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//[is_callable_usage2
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BOOST_TEST((local::can_call_func<callable::test11, int (double, std::string)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test11, double (int, std::string)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test11, void (double, std::string)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test11, void (int, std::string)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test11, void (int, char const*)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test11, int (double, int)>::value == false));
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BOOST_TEST((local::can_call_func<callable::test11, int (double)>::value == false));
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BOOST_TEST((local::can_call_func<callable::test12, int (double, std::string)>::value == false));
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BOOST_TEST((local::can_call_func<callable::test12, void (double, std::string)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test12, void ( int, std::string)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test12, void ( int, char const*)>::value == true));
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//]
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BOOST_TEST((local::can_call_func<callable::test13, void (double)>::value == true)); //C1
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BOOST_TEST((local::can_call_func<callable::test13, void (int)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test13 const, void (int)>::value == false));
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BOOST_TEST((local::can_call_func<callable::test14 const, std::string (int)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test14, std::string (int)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test14 const, void (int)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test14, void (int)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test15, std::string (int, std::string)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test15, std::string (int, std::string const&)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test15, void (int, char const*)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test15, std::string (int)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test15 const, std::string (int)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test15, void (int)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test15 const, void (int)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test15, void (char const*)>::value == false));
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BOOST_TEST((local::can_call_func<callable::test15 const, void (char const*)>::value == false));
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BOOST_TEST((local::can_call_func<callable::test16, std::string (int)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test16, std::string (std::string)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test16, void (int)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test16, void (std::string)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test17, std::string (int)>::value == false));
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BOOST_TEST((local::can_call_func<callable::test17, std::string (std::string)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test17, void (int)>::value == true));
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BOOST_TEST((local::can_call_func<callable::test17, void (std::string)>::value == true));
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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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//[is_callable_usage
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//]
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test_is_callable();
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BOOST_TEST(boost::cnv::is_string<direction>::value == false);
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BOOST_TEST(boost::cnv::is_string<std::string>::value == true);
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BOOST_TEST(boost::cnv::is_string<std::wstring>::value == true);
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BOOST_TEST(boost::cnv::is_string<my_string>::value == true);
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BOOST_TEST(boost::cnv::is_string<int>::value == false);
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return boost::report_errors();
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}
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#endif
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