/////////////////////////////////////////////////////////////////////////////// /// \file rbegin.hpp /// Proto callables for boost::rbegin() // // Copyright 2012 Eric Niebler. 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_PROTO_FUNCTIONAL_RANGE_RBEGIN_HPP_EAN_27_08_2012 #define BOOST_PROTO_FUNCTIONAL_RANGE_RBEGIN_HPP_EAN_27_08_2012 #include <boost/range/rbegin.hpp> #include <boost/proto/proto_fwd.hpp> namespace boost { namespace proto { namespace functional { // A PolymorphicFunctionObject that wraps boost::rbegin() struct rbegin { BOOST_PROTO_CALLABLE() template<typename Sig> struct result; template<typename This, typename Rng> struct result<This(Rng)> : boost::range_reverse_iterator<Rng const> {}; template<typename This, typename Rng> struct result<This(Rng &)> : boost::range_reverse_iterator<Rng> {}; template<typename Rng> typename boost::range_reverse_iterator<Rng>::type operator()(Rng &rng) const { return boost::rbegin(rng); } template<typename Rng> typename boost::range_reverse_iterator<Rng const>::type operator()(Rng const &rng) const { return boost::rbegin(rng); } }; }}} #endif