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43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
// Copyright (c) 2001-2008 Hartmut Kaiser
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#if !defined(BOOST_SPIRIT_KARMA_NONE_MARCH_26_2007_1227PM)
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#define BOOST_SPIRIT_KARMA_NONE_MARCH_26_2007_1227PM
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#include <boost/spirit/home/karma/domain.hpp>
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#include <boost/spirit/home/karma/delimit.hpp>
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#include <boost/spirit/home/support/unused.hpp>
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namespace boost { namespace spirit { namespace karma
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{
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struct none
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{
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template <typename Component, typename Context, typename Unused>
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struct attribute
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{
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typedef unused_type type;
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};
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template <typename Component, typename OutputIterator,
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typename Context, typename Delimiter, typename Parameter>
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static bool
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generate(Component const& /*component*/, OutputIterator& sink,
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Context& /*ctx*/, Delimiter const& d, Parameter const& /*param*/)
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{
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karma::delimit(sink, d); // always do post-delimiting
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return false;
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}
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template <typename Component>
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static std::string what(Component const&)
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{
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return "none";
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}
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};
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}}}
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#endif
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