mirror of
https://github.com/boostorg/system.git
synced 2026-07-05 16:00:55 +02:00
Peter Dimov
55 lines
1.2 KiB
C++
55 lines
1.2 KiB
C++
// Copyright 2026 Peter Dimov
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/system/error_code.hpp>
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#include <boost/system/error_condition.hpp>
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#include <boost/config/pragma_message.hpp>
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#include <boost/static_assert.hpp>
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#include <cstdio>
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#if !defined(BOOST_SYSTEM_HAS_CXX20_CONSTEXPR)
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BOOST_PRAGMA_MESSAGE("Skipping constexpr test, BOOST_SYSTEM_HAS_CXX20_CONSTEXPR isn't defined")
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int main() {}
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#else
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namespace sys = boost::system;
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class user_category: public sys::error_category
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{
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public:
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constexpr virtual const char* name() const noexcept
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{
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return "user";
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}
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virtual std::string message( int ev ) const
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{
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char buffer[ 256 ];
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std::snprintf( buffer, sizeof( buffer ), "user message %d", ev );
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return buffer;
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}
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};
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static constexpr user_category s_user_cat;
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constexpr sys::error_code ec( 1, s_user_cat );
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BOOST_STATIC_ASSERT( ec.failed() );
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BOOST_STATIC_ASSERT( ec );
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BOOST_STATIC_ASSERT( !!ec );
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constexpr sys::error_condition en( 1, s_user_cat );
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BOOST_STATIC_ASSERT( en.failed() );
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BOOST_STATIC_ASSERT( en );
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BOOST_STATIC_ASSERT( !!en );
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int main() {}
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#endif
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