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Add error_code::what

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This commit is contained in:
Peter Dimov
2021-10-02 14:41:27 +03:00
parent f2d3a0decf
commit eefcc5dcf6
4 changed files with 110 additions and 0 deletions
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17
include/boost/system/detail/error_code.hpp
View File

@ -602,6 +602,23 @@ public:
{
return os << ec.to_string();
}
std::string what() const
{
std::string r = message();
r += " [";
r += to_string();
if( has_location() )
{
r += " at ";
r += location().to_string();
}
r += "]";
return r;
}
};
inline std::size_t hash_value( error_code const & ec )

1
test/CMakeLists.txt
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@ -107,6 +107,7 @@ boost_test(TYPE run SOURCES system_error_test2.cpp)
boost_test(TYPE run SOURCES std_interop_test10.cpp)
boost_test(TYPE run SOURCES ec_location_test2.cpp)
boost_test(TYPE run SOURCES ec_what_test.cpp)
# result

1
test/Jamfile.v2
View File

@ -129,6 +129,7 @@ run system_error_test2.cpp ;
run std_interop_test10.cpp ;
run ec_location_test2.cpp ;
run ec_what_test.cpp ;
# result

91
test/ec_what_test.cpp Normal file
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@ -0,0 +1,91 @@
// Copyright 2020, 2021 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
#include <boost/system/error_code.hpp>
#include <boost/system/generic_category.hpp>
#include <boost/system/system_category.hpp>
#include <boost/core/lightweight_test.hpp>
namespace sys = boost::system;
int main()
{
{
sys::error_code ec;
BOOST_TEST_EQ( ec.value(), 0 );
BOOST_TEST( ec.category() == sys::system_category() );
BOOST_TEST_EQ( ec.what(), ec.message() + " [system:0]" );
}
{
sys::error_code ec( 5, sys::generic_category() );
BOOST_TEST_EQ( ec.value(), 5 );
BOOST_TEST( ec.category() == sys::generic_category() );
BOOST_TEST_EQ( ec.what(), ec.message() + " [generic:5]" );
}
{
sys::error_code ec( 5, sys::system_category() );
BOOST_TEST_EQ( ec.value(), 5 );
BOOST_TEST( ec.category() == sys::system_category() );
BOOST_TEST_EQ( ec.what(), ec.message() + " [system:5]" );
}
{
BOOST_STATIC_CONSTEXPR boost::source_location loc = BOOST_CURRENT_LOCATION;
sys::error_code ec( 5, sys::generic_category(), &loc );
BOOST_TEST_EQ( ec.value(), 5 );
BOOST_TEST( ec.category() == sys::generic_category() );
BOOST_TEST_EQ( &ec.location(), &loc );
BOOST_TEST_EQ( ec.what(), ec.message() + " [generic:5 at " + loc.to_string() + "]" );
}
{
BOOST_STATIC_CONSTEXPR boost::source_location loc = BOOST_CURRENT_LOCATION;
sys::error_code ec( 5, sys::system_category(), &loc );
BOOST_TEST_EQ( ec.value(), 5 );
BOOST_TEST( ec.category() == sys::system_category() );
BOOST_TEST_EQ( &ec.location(), &loc );
BOOST_TEST_EQ( ec.what(), ec.message() + " [system:5 at " + loc.to_string() + "]" );
}
#if defined(BOOST_SYSTEM_HAS_SYSTEM_ERROR)
{
std::error_code ec;
sys::error_code ec2( ec );
BOOST_TEST_EQ( ec2.what(), ec2.message() + " [std:system:0]" );
}
{
std::error_code ec( 5, std::generic_category() );
sys::error_code ec2( ec );
BOOST_TEST_EQ( ec2.what(), ec2.message() + " [std:generic:5]" );
}
{
std::error_code ec( 5, std::system_category() );
sys::error_code ec2( ec );
BOOST_TEST_EQ( ec2.what(), ec2.message() + " [std:system:5]" );
}
#endif
return boost::report_errors();
}