80 lines
2.9 KiB
C++
80 lines
2.9 KiB
C++
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// Boost.Convert test and usage example
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// Copyright (c) 2009-2020 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_CXX14)
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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 <functional>
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namespace { namespace local
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{
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bool called_functor_int;
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bool called_functor_double;
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bool called_functor_foo;
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bool called_function_int;
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bool called_function_long;
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}}
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struct functor_int { int operator() () const { local:: called_functor_int = true; return INT_MAX; }};
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struct functor_double { double operator() () const { local::called_functor_double = true; return INT_MAX; }};
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struct functor_foo { int func (int) const { local:: called_functor_foo = true; return INT_MAX; }};
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int function_int () { local:: called_function_int = true; return INT_MAX; }
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long function_long () { local::called_function_long = true; return INT_MAX; }
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int
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main(int, char const* [])
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{
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auto cnv = boost::cnv::cstream();
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auto foo = functor_foo();
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int i01 = boost::convert<int>("uhm", cnv).value_or_eval(functor_int());
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int i02 = boost::convert<int>("uhm", cnv).value_or_eval(functor_double());
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int i03 = boost::convert<int>("uhm", cnv).value_or_eval(std::bind(&functor_foo::func, foo, 0));
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int i04 = boost::convert<int>("uhm", cnv).value_or_eval(function_int);
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int i05 = boost::convert<int>("uhm", cnv).value_or_eval(function_long);
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BOOST_TEST(local:: called_functor_int && i01 == INT_MAX);
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BOOST_TEST(local::called_functor_double && i02 == INT_MAX);
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BOOST_TEST(local:: called_functor_foo && i03 == INT_MAX);
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BOOST_TEST(local:: called_function_int && i04 == INT_MAX);
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BOOST_TEST(local:: called_function_long && i05 == INT_MAX);
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local:: called_functor_int = false;
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local::called_functor_double = false;
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local:: called_functor_foo = false;
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local:: called_function_int = false;
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local:: called_function_long = false;
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boost::convert<int>("uhm", cnv, functor_int());
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boost::convert<int>("uhm", cnv, functor_double());
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boost::convert<int>("uhm", cnv, std::bind(&functor_foo::func, foo, 0));
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boost::convert<int>("uhm", cnv, function_int);
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boost::convert<int>("uhm", cnv, function_long);
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BOOST_TEST(local:: called_functor_int && i01 == INT_MAX);
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BOOST_TEST(local::called_functor_double && i02 == INT_MAX);
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BOOST_TEST(local:: called_functor_foo && i03 == INT_MAX);
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BOOST_TEST(local:: called_function_int && i04 == INT_MAX);
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BOOST_TEST(local:: called_function_long && i05 == INT_MAX);
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try
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{
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boost::convert<int>("uhm", cnv, boost::throw_on_failure);
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BOOST_TEST(0);
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}
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catch (boost::bad_optional_access const&)
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{
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}
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return boost::report_errors();
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}
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#endif
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