Added boost header
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128
test/external/boost/iostreams/pipeline.hpp
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128
test/external/boost/iostreams/pipeline.hpp
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// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
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// (C) Copyright 2003-2007 Jonathan Turkanis
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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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// See http://www.boost.org/libs/iostreams for documentation.
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#ifndef BOOST_IOSTREAMS_PIPABLE_HPP_INCLUDED
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#define BOOST_IOSTREAMS_PIPABLE_HPP_INCLUDED
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#if defined(_MSC_VER) && (_MSC_VER >= 1020)
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# pragma once
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#endif
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#include <boost/config.hpp> // BOOST_MSVC.
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#include <boost/detail/workaround.hpp>
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#include <boost/iostreams/detail/template_params.hpp>
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#include <boost/iostreams/traits.hpp>
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#include <boost/mpl/bool.hpp>
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#include <boost/preprocessor/punctuation/comma_if.hpp>
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#include <boost/preprocessor/repetition/enum_params.hpp>
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#include <boost/static_assert.hpp>
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#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
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# include <boost/type_traits/is_base_and_derived.hpp>
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#endif
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#define BOOST_IOSTREAMS_PIPABLE(filter, arity) \
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template< BOOST_PP_ENUM_PARAMS(arity, typename T) \
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BOOST_PP_COMMA_IF(arity) typename Component> \
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::boost::iostreams::pipeline< \
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::boost::iostreams::detail::pipeline_segment< \
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filter BOOST_IOSTREAMS_TEMPLATE_ARGS(arity, T) \
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>, \
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Component \
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> operator|( const filter BOOST_IOSTREAMS_TEMPLATE_ARGS(arity, T)& f, \
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const Component& c ) \
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{ \
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typedef ::boost::iostreams::detail::pipeline_segment< \
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filter BOOST_IOSTREAMS_TEMPLATE_ARGS(arity, T) \
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> segment; \
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return ::boost::iostreams::pipeline<segment, Component> \
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(segment(f), c); \
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} \
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/**/
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namespace boost { namespace iostreams {
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template<typename Pipeline, typename Component>
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struct pipeline;
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namespace detail {
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#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
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struct pipeline_base { };
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template<typename T>
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struct is_pipeline
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: is_base_and_derived<pipeline_base, T>
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{ };
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#endif
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#if BOOST_WORKAROUND(__BORLANDC__, < 0x600)
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template<typename T>
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struct is_pipeline : mpl::false_ { };
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template<typename Pipeline, typename Component>
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struct is_pipeline< pipeline<Pipeline, Component> > : mpl::true_ { };
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#endif
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template<typename Component>
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class pipeline_segment
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#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
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: pipeline_base
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#endif
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{
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public:
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pipeline_segment(const Component& component)
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: component_(component)
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{ }
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template<typename Fn>
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void for_each(Fn fn) const { fn(component_); }
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template<typename Chain>
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void push(Chain& chn) const { chn.push(component_); }
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private:
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pipeline_segment operator=(const pipeline_segment&);
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const Component& component_;
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};
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} // End namespace detail.
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//------------------Definition of Pipeline------------------------------------//
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template<typename Pipeline, typename Component>
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struct pipeline : Pipeline {
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typedef Pipeline pipeline_type;
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typedef Component component_type;
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pipeline(const Pipeline& p, const Component& component)
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: Pipeline(p), component_(component)
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{ }
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template<typename Fn>
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void for_each(Fn fn) const
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{
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Pipeline::for_each(fn);
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fn(component_);
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}
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template<typename Chain>
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void push(Chain& chn) const
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{
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Pipeline::push(chn);
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chn.push(component_);
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}
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const Pipeline& tail() const { return *this; }
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const Component& head() const { return component_; }
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private:
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pipeline operator=(const pipeline&);
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const Component& component_;
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};
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template<typename Pipeline, typename Filter, typename Component>
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pipeline<pipeline<Pipeline, Filter>, Component>
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operator|(const pipeline<Pipeline, Filter>& p, const Component& cmp)
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{
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BOOST_STATIC_ASSERT(is_filter<Filter>::value);
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return pipeline<pipeline<Pipeline, Filter>, Component>(p, cmp);
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}
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} } // End namespaces iostreams, boost.
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#endif // #ifndef BOOST_IOSTREAMS_PIPABLE_HPP_INCLUDED
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