// Copyright (c) 2001-2011 Hartmut Kaiser
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// Copyright (c) 2001-2011 Joel de Guzman
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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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#ifndef BOOST_SPIRIT_KARMA_DIRECTIVE_UPPER_LOWER_CASE_HPP
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#define BOOST_SPIRIT_KARMA_DIRECTIVE_UPPER_LOWER_CASE_HPP
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#if defined(_MSC_VER)
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#pragma once
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#endif
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#include <boost/spirit/home/support/common_terminals.hpp>
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#include <boost/spirit/home/support/modify.hpp>
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#include <boost/spirit/home/karma/domain.hpp>
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#include <boost/spirit/home/karma/meta_compiler.hpp>
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namespace boost { namespace spirit
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{
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///////////////////////////////////////////////////////////////////////////
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// Enablers
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///////////////////////////////////////////////////////////////////////////
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template <typename CharEncoding>
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struct use_directive<
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karma::domain, tag::char_code<tag::upper, CharEncoding> > // enables upper
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: mpl::true_ {};
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template <typename CharEncoding>
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struct use_directive<
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karma::domain, tag::char_code<tag::lower, CharEncoding> > // enables lower
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: mpl::true_ {};
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///////////////////////////////////////////////////////////////////////////
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template <typename CharEncoding>
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struct is_modifier_directive<karma::domain
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, tag::char_code<tag::upper, CharEncoding> >
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: mpl::true_ {};
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template <typename CharEncoding>
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struct is_modifier_directive<karma::domain
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, tag::char_code<tag::lower, CharEncoding> >
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: mpl::true_ {};
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///////////////////////////////////////////////////////////////////////////
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// Don't add tag::upper or tag::lower if there is already one of those in
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// the modifier list
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template <typename Current, typename CharEncoding>
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struct compound_modifier<
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Current
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, tag::char_code<tag::upper, CharEncoding>
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, typename enable_if<
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has_modifier<Current, tag::char_code<tag::lower, CharEncoding> >
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>::type
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>
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: Current
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{
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compound_modifier()
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: Current() {}
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compound_modifier(Current const& current,
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tag::char_code<tag::upper, CharEncoding> const&)
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: Current(current) {}
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};
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template <typename Current, typename CharEncoding>
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struct compound_modifier<
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Current
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, tag::char_code<tag::lower, CharEncoding>
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, typename enable_if<
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has_modifier<Current, tag::char_code<tag::upper, CharEncoding> >
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>::type
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>
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: Current
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{
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compound_modifier()
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: Current() {}
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compound_modifier(Current const& current,
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tag::char_code<tag::lower, CharEncoding> const&)
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: Current(current) {}
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};
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}}
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#endif
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