// 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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#if !defined(BOOST_SPIRIT_KARMA_VERBATIM_MAR_02_2007_0303PM)
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#define BOOST_SPIRIT_KARMA_VERBATIM_MAR_02_2007_0303PM
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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/karma/meta_compiler.hpp>
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#include <boost/spirit/home/karma/generator.hpp>
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#include <boost/spirit/home/karma/domain.hpp>
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#include <boost/spirit/home/karma/detail/unused_delimiter.hpp>
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#include <boost/spirit/home/karma/delimit_out.hpp>
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#include <boost/spirit/home/karma/auxiliary/lazy.hpp>
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#include <boost/spirit/home/support/unused.hpp>
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#include <boost/spirit/home/support/common_terminals.hpp>
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#include <boost/spirit/home/support/has_semantic_action.hpp>
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#include <boost/spirit/home/support/handles_container.hpp>
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#include <boost/spirit/home/karma/detail/attributes.hpp>
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#include <boost/spirit/home/support/info.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::verbatim> // enables verbatim[]
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: mpl::true_ {};
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}}
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namespace boost { namespace spirit { namespace karma
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{
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#ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
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using spirit::verbatim;
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#endif
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using spirit::verbatim_type;
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///////////////////////////////////////////////////////////////////////////
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// The verbatim generator is used for verbatim[...] directives.
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///////////////////////////////////////////////////////////////////////////
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template <typename Subject>
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struct verbatim_generator : unary_generator<verbatim_generator<Subject> >
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{
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typedef Subject subject_type;
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typedef typename subject_type::properties properties;
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template <typename Context, typename Iterator>
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struct attribute
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: traits::attribute_of<subject_type, Context, Iterator>
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{};
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verbatim_generator(Subject const& subject)
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: subject(subject) {}
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template <typename OutputIterator, typename Context, typename Delimiter
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, typename Attribute>
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bool generate(OutputIterator& sink, Context& ctx, Delimiter const& d
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, Attribute const& attr) const
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{
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// the verbatim generator simply dispatches to the embedded
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// generator while supplying unused_delimiter as the new delimiter
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// to avoid delimiting down the generator stream
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typedef detail::unused_delimiter<Delimiter> unused_delimiter;
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return subject.generate(sink, ctx, unused_delimiter(d), attr) &&
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karma::delimit_out(sink, d); // always do post-delimiting
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}
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template <typename Context>
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info what(Context& context) const
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{
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return info("verbatim", subject.what(context));
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}
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Subject subject;
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};
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///////////////////////////////////////////////////////////////////////////
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// Generator generators: make_xxx function (objects)
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///////////////////////////////////////////////////////////////////////////
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template <typename Subject, typename Modifiers>
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struct make_directive<tag::verbatim, Subject, Modifiers>
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{
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typedef verbatim_generator<Subject> result_type;
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result_type operator()(unused_type, Subject const& subject, unused_type) const
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{
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return result_type(subject);
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}
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};
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}}}
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namespace boost { namespace spirit { namespace traits
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{
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///////////////////////////////////////////////////////////////////////////
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template <typename Subject>
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struct has_semantic_action<karma::verbatim_generator<Subject> >
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: unary_has_semantic_action<Subject> {};
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///////////////////////////////////////////////////////////////////////////
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template <typename Subject, typename Attribute, typename Context
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, typename Iterator>
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struct handles_container<karma::verbatim_generator<Subject>, Attribute
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, Context, Iterator>
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: unary_handles_container<Subject, Attribute, Context, Iterator> {};
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}}}
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#endif
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