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// Boost.Convert test and usage example
// Copyright (c) 2009-2020 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_CXX14)
int main(int, char const* []) { return 0; }
#else
#include <boost/convert.hpp>
#include <boost/convert/lexical_cast.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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