90 lines
3.1 KiB
C++
Executable File
90 lines
3.1 KiB
C++
Executable File
// Copyright (c) 2001-2008 Hartmut Kaiser
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// Copyright (c) 2001-2007 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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#if !defined(SPIRIT_KARMA_SEQUENCE_FEB_28_2007_0247PM)
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#define SPIRIT_KARMA_SEQUENCE_FEB_28_2007_0247PM
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#if defined(_MSC_VER) && (_MSC_VER >= 1020)
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#pragma once // MS compatible compilers support #pragma once
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#endif
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#include <boost/spirit/home/karma/domain.hpp>
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#include <boost/spirit/home/karma/operator/detail/sequence.hpp>
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#include <boost/spirit/home/support/attribute_transform.hpp>
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#include <boost/spirit/home/support/detail/what_function.hpp>
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#include <boost/spirit/home/support/algorithm/any_if.hpp>
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#include <boost/spirit/home/support/unused.hpp>
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#include <boost/fusion/include/vector.hpp>
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#include <boost/fusion/include/as_vector.hpp>
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#include <boost/fusion/include/transform.hpp>
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#include <boost/fusion/include/filter_if.hpp>
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#include <boost/fusion/include/for_each.hpp>
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#include <boost/type_traits/is_same.hpp>
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#include <boost/mpl/not.hpp>
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namespace boost { namespace spirit { namespace karma
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{
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struct sequence
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{
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template <typename T>
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struct transform_child : mpl::identity<T> {};
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template <typename All, typename Filtered>
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struct build_container
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{
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typedef
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typename fusion::result_of::as_vector<Filtered>::type
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type;
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};
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template <typename Component, typename Context, typename Iterator>
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struct attribute :
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build_fusion_sequence<
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sequence, Component, Iterator, Context, mpl::true_
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>
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{
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};
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template <typename Context>
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struct attribute_not_unused
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{
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template <typename Component>
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struct apply
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: spirit::traits::is_not_unused<typename
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traits::attribute_of<karma::domain, Component, Context>::type>
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{};
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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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detail::sequence_generate<OutputIterator, Context, Delimiter>
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f (sink, ctx, d);
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typedef attribute_not_unused<Context> predicate;
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// f returns true if *any* of the generators fail
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return !spirit::any_if(component.elements, param, f, predicate());
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}
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template <typename Component, typename Context>
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static std::string what(Component const& component, Context const& ctx)
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{
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std::string result = "sequence[";
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fusion::for_each(component.elements,
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spirit::detail::what_function<Context>(result, ctx));
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result += "]";
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return result;
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}
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};
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}}} // namespace boost::spirit::karma
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#endif
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