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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/lexical_cast.hpp>
- #include <boost/detail/lightweight_test.hpp>
- using std::string;
- using boost::convert;
- struct boost::cnv::by_default : boost::cnv::lexical_cast {};
- static
- void
- test_invalid()
- {
- char const* str[] = { "not", "1 2", " 33", "44 ", "0x11", "7 + 5" };
- int const size = sizeof(str) / sizeof(str[0]);
- for (int k = 0; k < size; ++k)
- {
- boost::optional<int> const res = convert<int>(str[k]);
- bool const failed = !res;
- if (!failed)
- {
- printf("test::cnv::invalid() failed for: <%s><%d>\n", str[k], res.value());
- }
- BOOST_TEST(failed);
- }
- }
- static
- void
- test_dbl_to_str()
- {
- // printf("100.00 %s\n", convert<string>( 99.999).value().c_str());
- // printf( "99.95 %s\n", convert<string>( 99.949).value().c_str());
- // printf("-99.95 %s\n", convert<string>(-99.949).value().c_str());
- // printf( "99.9 %s\n", convert<string>( 99.949).value().c_str());
- // printf( "1.00 %s\n", convert<string>( 0.999).value().c_str());
- // printf( "-1.00 %s\n", convert<string>( -0.999).value().c_str());
- // printf( "0.95 %s\n", convert<string>( 0.949).value().c_str());
- // printf( "-0.95 %s\n", convert<string>( -0.949).value().c_str());
- // printf( "1.9 %s\n", convert<string>( 1.949).value().c_str());
- // printf( "-1.9 %s\n", convert<string>( -1.949).value().c_str());
- }
- int
- main(int, char const* [])
- {
- string const not_int_str = "not an int";
- string const std_str = "-11";
- char const* const c_str = "-12";
- int const v00 = convert<int>(not_int_str).value_or(-1);
- int const v01 = convert<int>( std_str).value_or(-1);
- int const v02 = convert<int>( c_str).value_or(-1);
- BOOST_TEST(v00 == -1); // Failed conversion. No throw
- BOOST_TEST(v01 == -11);
- BOOST_TEST(v02 == -12);
- test_invalid();
- test_dbl_to_str();
- return boost::report_errors();
- }
- #endif
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