boost/core/no_exceptions_support.hpp
#ifndef BOOST_CORE_NO_EXCEPTIONS_SUPPORT_HPP
#define BOOST_CORE_NO_EXCEPTIONS_SUPPORT_HPP
#if defined(_MSC_VER)
# pragma once
#endif
//----------------------------------------------------------------------
// (C) Copyright 2004 Pavel Vozenilek.
// Use, modification and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt
// or copy at http://www.boost.org/LICENSE_1_0.txt)
//
//
// This file contains helper macros used when exception support may be
// disabled (as indicated by macro BOOST_NO_EXCEPTIONS).
//
// Before picking up these macros you may consider using RAII techniques
// to deal with exceptions - their syntax can be always the same with
// or without exception support enabled.
//----------------------------------------------------------------------
#include <boost/config.hpp>
#include <boost/config/workaround.hpp>
#if !(defined BOOST_NO_EXCEPTIONS)
# define BOOST_TRY { try
# define BOOST_CATCH(x) catch(x)
# define BOOST_RETHROW throw;
# define BOOST_CATCH_END }
#else
# if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
# define BOOST_TRY { if ("")
# define BOOST_CATCH(x) else if (!"")
# elif !defined(BOOST_MSVC) || BOOST_MSVC >= 1900
# define BOOST_TRY { if (true)
# define BOOST_CATCH(x) else if (false)
# else
// warning C4127: conditional expression is constant
# define BOOST_TRY { \
__pragma(warning(push)) \
__pragma(warning(disable: 4127)) \
if (true) \
__pragma(warning(pop))
# define BOOST_CATCH(x) else \
__pragma(warning(push)) \
__pragma(warning(disable: 4127)) \
if (false) \
__pragma(warning(pop))
# endif
# define BOOST_RETHROW
# define BOOST_CATCH_END }
#endif
#endif