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Diffstat (limited to '3rdParty/Boost/src/boost/variant/detail/apply_visitor_unary.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/variant/detail/apply_visitor_unary.hpp | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/variant/detail/apply_visitor_unary.hpp b/3rdParty/Boost/src/boost/variant/detail/apply_visitor_unary.hpp new file mode 100644 index 0000000..10b361a --- /dev/null +++ b/3rdParty/Boost/src/boost/variant/detail/apply_visitor_unary.hpp @@ -0,0 +1,79 @@ +//----------------------------------------------------------------------------- +// boost variant/detail/apply_visitor_unary.hpp header file +// See http://www.boost.org for updates, documentation, and revision history. +//----------------------------------------------------------------------------- +// +// Copyright (c) 2002-2003 +// Eric Friedman +// +// Distributed under 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) + +#ifndef BOOST_VARIANT_DETAIL_APPLY_VISITOR_UNARY_HPP +#define BOOST_VARIANT_DETAIL_APPLY_VISITOR_UNARY_HPP + +#include "boost/config.hpp" +#include "boost/detail/workaround.hpp" +#include "boost/variant/detail/generic_result_type.hpp" + +#include "boost/utility/enable_if.hpp" + +namespace boost { + +////////////////////////////////////////////////////////////////////////// +// function template apply_visitor(visitor, visitable) +// +// Visits visitable with visitor. +// + +// +// nonconst-visitor version: +// + +#if !BOOST_WORKAROUND(__EDG__, BOOST_TESTED_AT(302)) + +# define BOOST_VARIANT_AUX_APPLY_VISITOR_NON_CONST_RESULT_TYPE(V) \ + BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(typename V::result_type) \ + /**/ + +#else // EDG-based compilers + +# define BOOST_VARIANT_AUX_APPLY_VISITOR_NON_CONST_RESULT_TYPE(V) \ + typename enable_if< \ + mpl::not_< is_const< V > > \ + , BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(typename V::result_type) \ + >::type \ + /**/ + +#endif // EDG-based compilers workaround + +template <typename Visitor, typename Visitable> +inline + BOOST_VARIANT_AUX_APPLY_VISITOR_NON_CONST_RESULT_TYPE(Visitor) +apply_visitor(Visitor& visitor, Visitable& visitable) +{ + return visitable.apply_visitor(visitor); +} + +#undef BOOST_VARIANT_AUX_APPLY_VISITOR_NON_CONST_RESULT_TYPE + +// +// const-visitor version: +// + +#if !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) + +template <typename Visitor, typename Visitable> +inline + BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(typename Visitor::result_type) +apply_visitor(const Visitor& visitor, Visitable& visitable) +{ + return visitable.apply_visitor(visitor); +} + +#endif // MSVC7 and below exclusion + +} // namespace boost + +#endif // BOOST_VARIANT_DETAIL_APPLY_VISITOR_UNARY_HPP |