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Editing: const_cast.hpp
/*============================================================================== Copyright (c) 2001-2010 Joel de Guzman Copyright (c) 2010 Thomas Heller 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_PHOENIX_OBJECT_CONST_CAST_HPP #define BOOST_PHOENIX_OBJECT_CONST_CAST_HPP #include <boost/phoenix/core/limits.hpp> #include <boost/phoenix/core/call.hpp> #include <boost/phoenix/core/expression.hpp> #include <boost/phoenix/core/meta_grammar.hpp> #include <boost/phoenix/object/detail/target.hpp> #include <boost/proto/transform/lazy.hpp> BOOST_PHOENIX_DEFINE_EXPRESSION( (boost)(phoenix)(const_cast_) , (proto::terminal<detail::target<proto::_> >) (meta_grammar) ) namespace boost { namespace phoenix { struct const_cast_eval { template <typename Sig> struct result; template <typename This, typename Target, typename Source, typename Context> struct result<This(Target, Source, Context)> : detail::result_of::target<Target> {}; template <typename Target, typename Source, typename Context> typename detail::result_of::target<Target>::type operator()(Target, Source const& u, Context const& ctx) const { return const_cast< typename detail::result_of::target<Target>::type >(boost::phoenix::eval(u, ctx)); } }; template <typename Dummy> struct default_actions::when<rule::const_cast_, Dummy> : call<const_cast_eval, Dummy> {}; template <typename T, typename U> inline typename expression::const_cast_<detail::target<T>, U>::type const const_cast_(U const& u) { return expression:: const_cast_<detail::target<T>, U>:: make(detail::target<T>(), u); } }} #endif
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