| // Copyright (c) 2001-2009 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(BOOST_SPIRIT_KARMA_NONE_MARCH_26_2007_1227PM) |
| #define BOOST_SPIRIT_KARMA_NONE_MARCH_26_2007_1227PM |
| |
| #include <boost/spirit/home/karma/domain.hpp> |
| #include <boost/spirit/home/karma/delimit.hpp> |
| #include <boost/spirit/home/support/unused.hpp> |
| |
| namespace boost { namespace spirit { namespace karma |
| { |
| struct none |
| { |
| template <typename Component, typename Context, typename Unused> |
| struct attribute |
| { |
| typedef unused_type type; |
| }; |
| |
| template <typename Component, typename OutputIterator, |
| typename Context, typename Delimiter, typename Parameter> |
| static bool |
| generate(Component const& /*component*/, OutputIterator& sink, |
| Context& /*ctx*/, Delimiter const& d, Parameter const& /*param*/) |
| { |
| karma::delimit(sink, d); // always do post-delimiting |
| return false; |
| } |
| |
| template <typename Component, typename Context> |
| static std::string what(Component const& component, Context const& ctx) |
| { |
| return "none"; |
| } |
| }; |
| |
| }}} |
| |
| #endif |