// Copyright (c) 2001-2011 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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#ifndef BOOST_SPIRIT_KARMA_DIRECTIVE_STRICT_RELAXED_HPP
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#define BOOST_SPIRIT_KARMA_DIRECTIVE_STRICT_RELAXED_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 <>
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struct use_directive<karma::domain, tag::strict> // enables strict[]
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: mpl::true_ {};
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template <>
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struct use_directive<karma::domain, tag::relaxed> // enables relaxed[]
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: mpl::true_ {};
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///////////////////////////////////////////////////////////////////////////
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template <>
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struct is_modifier_directive<karma::domain, tag::strict>
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: mpl::true_ {};
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template <>
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struct is_modifier_directive<karma::domain, tag::relaxed>
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: mpl::true_ {};
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///////////////////////////////////////////////////////////////////////////
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// Don't add tag::strict or tag::relaxed if there is already one of those
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// in the modifier list
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template <typename Current>
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struct compound_modifier<Current, tag::strict
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, typename enable_if<has_modifier<Current, tag::relaxed> >::type>
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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, tag::strict const&)
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: Current(current) {}
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};
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template <typename Current>
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struct compound_modifier<Current, tag::relaxed
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, typename enable_if<has_modifier<Current, tag::strict> >::type>
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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, tag::relaxed const&)
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: Current(current) {}
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};
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namespace karma
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{
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#ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
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using boost::spirit::strict;
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using boost::spirit::relaxed;
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#endif
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using boost::spirit::strict_type;
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using boost::spirit::relaxed_type;
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}
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}}
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#endif
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