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- // Copyright (c) 2001-2011 Hartmut Kaiser
- //
- // 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)
- #if !defined(SPIRIT_SUPPORT_ATTR_CAST_OCT_06_2009_00535PM)
- #define SPIRIT_SUPPORT_ATTR_CAST_OCT_06_2009_00535PM
- #if defined(_MSC_VER)
- #pragma once
- #endif
- #include <boost/spirit/home/support/common_terminals.hpp>
- #include <boost/spirit/home/support/attributes.hpp>
- #include <boost/utility/enable_if.hpp>
- namespace boost { namespace spirit
- {
- ///////////////////////////////////////////////////////////////////////////
- // This one is the function that the user can call directly in order
- // to create a customized attr_cast component
- template <typename Expr>
- typename enable_if<proto::is_expr<Expr>
- , stateful_tag_type<Expr, tag::attr_cast> >::type
- attr_cast(Expr const& expr)
- {
- return stateful_tag_type<Expr, tag::attr_cast>(expr);
- }
- template <typename Exposed, typename Expr>
- typename enable_if<proto::is_expr<Expr>
- , stateful_tag_type<Expr, tag::attr_cast, Exposed> >::type
- attr_cast(Expr const& expr)
- {
- return stateful_tag_type<Expr, tag::attr_cast, Exposed>(expr);
- }
- template <typename Exposed, typename Transformed, typename Expr>
- typename enable_if<proto::is_expr<Expr>
- , stateful_tag_type<Expr, tag::attr_cast, Exposed, Transformed> >::type
- attr_cast(Expr const& expr)
- {
- return stateful_tag_type<Expr, tag::attr_cast, Exposed, Transformed>(expr);
- }
- }}
- #endif
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