Chris@16: /*=============================================================================
Chris@16:     Copyright (c) 2001-2011 Joel de Guzman
Chris@16: 
Chris@16:     Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: ==============================================================================*/
Chris@16: #if !defined(BOOST_SPIRIT_LAZY_NOVEMBER_04_2008_1157AM)
Chris@16: #define BOOST_SPIRIT_LAZY_NOVEMBER_04_2008_1157AM
Chris@16: 
Chris@16: #if defined(_MSC_VER)
Chris@16: #pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/spirit/include/phoenix_core.hpp>
Chris@16: #include <boost/proto/proto.hpp>
Chris@16: #include <boost/spirit/home/support/modify.hpp>
Chris@16: #include <boost/spirit/home/support/detail/is_spirit_tag.hpp>
Chris@16: 
Chris@16: namespace boost { namespace spirit
Chris@16: {
Chris@16:     template <typename Eval>
Chris@16:     typename proto::terminal<phoenix::actor<Eval> >::type
Chris@16:     lazy(phoenix::actor<Eval> const& f)
Chris@16:     {
Chris@16:         return proto::terminal<phoenix::actor<Eval> >::type::make(f);
Chris@16:     }
Chris@16: 
Chris@16:     namespace tag
Chris@16:     {
Chris@16:         struct lazy_eval 
Chris@16:         {
Chris@16:             BOOST_SPIRIT_IS_TAG()
Chris@16:         };
Chris@16:     }
Chris@16: 
Chris@16:     template <typename Domain>
Chris@16:     struct is_modifier_directive<Domain, tag::lazy_eval>
Chris@16:       : mpl::true_ {};
Chris@16: }}
Chris@16: 
Chris@16: #endif