63e88f80
 Hu Chunming
提交三方库
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#ifndef BOOST_CONTRACT_DETAIL_EXCEPTION_HPP_
#define BOOST_CONTRACT_DETAIL_EXCEPTION_HPP_
// Copyright (C) 2008-2019 Lorenzo Caminiti
// Distributed under the Boost Software License, Version 1.0 (see accompanying
// file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).
// See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html
#include <boost/config.hpp>
#include <exception>
namespace boost { namespace contract { namespace detail {
// Using this instead of std::uncaught_exception() because
// std::uncaught_exception will be removed in C++20.
inline bool uncaught_exception() BOOST_NOEXCEPT {
// Alternatively, this could just return `boost::core::uncaught_exceptions()
// > 0` but that emulates the exception count which is not needed by this
// lib (the implementation below is simpler and could be faster).
#ifdef __cpp_lib_uncaught_exceptions
return std::uncaught_exceptions() > 0;
#else
return std::uncaught_exception();
#endif
}
} } } // namespace
#endif // #include guard
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