Mercurial > hg > vamp-build-and-test
diff DEPENDENCIES/generic/include/boost/variant/detail/variant_io.hpp @ 16:2665513ce2d3
Add boost headers
author | Chris Cannam |
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date | Tue, 05 Aug 2014 11:11:38 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DEPENDENCIES/generic/include/boost/variant/detail/variant_io.hpp Tue Aug 05 11:11:38 2014 +0100 @@ -0,0 +1,95 @@ +//----------------------------------------------------------------------------- +// boost variant/detail/variant_io.hpp header file +// See http://www.boost.org for updates, documentation, and revision history. +//----------------------------------------------------------------------------- +// +// Copyright (c) 2002-2003 +// Eric Friedman, Itay Maman +// +// Distributed under the Boost Software License, Version 1.0. (See +// accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt) + +#ifndef BOOST_VARIANT_DETAIL_VARIANT_IO_HPP +#define BOOST_VARIANT_DETAIL_VARIANT_IO_HPP + +#include <iosfwd> // for std::basic_ostream forward declare + +#include "boost/variant/variant_fwd.hpp" + +#include "boost/detail/templated_streams.hpp" +#include "boost/variant/static_visitor.hpp" + +namespace boost { + +/////////////////////////////////////////////////////////////////////////////// +// function template operator<< +// +// Outputs the content of the given variant to the given ostream. +// + +// forward declare (allows output of embedded variant< variant< ... >, ... >) +template < + BOOST_TEMPLATED_STREAM_ARGS(E,T) + BOOST_TEMPLATED_STREAM_COMMA + BOOST_VARIANT_ENUM_PARAMS(typename U) + > +inline BOOST_TEMPLATED_STREAM(ostream, E,T)& operator<<( + BOOST_TEMPLATED_STREAM(ostream, E,T)& out + , const variant< BOOST_VARIANT_ENUM_PARAMS(U) >& rhs + ); + +namespace detail { namespace variant { + +template <typename OStream> +class printer + : public boost::static_visitor<> +{ +private: // representation + + OStream& out_; + +public: // structors + + explicit printer(OStream& out) + : out_( out ) + { + } + +public: // visitor interface + + template <typename T> + void operator()(const T& operand) const + { + out_ << operand; + } + +private: + printer& operator=(const printer&); + +}; + +}} // namespace detail::variant + +template < + BOOST_TEMPLATED_STREAM_ARGS(E,T) + BOOST_TEMPLATED_STREAM_COMMA + BOOST_VARIANT_ENUM_PARAMS(typename U) + > +inline BOOST_TEMPLATED_STREAM(ostream, E,T)& operator<<( + BOOST_TEMPLATED_STREAM(ostream, E,T)& out + , const variant< BOOST_VARIANT_ENUM_PARAMS(U) >& rhs + ) +{ + detail::variant::printer< + BOOST_TEMPLATED_STREAM(ostream, E,T) + > visitor(out); + + rhs.apply_visitor(visitor); + + return out; +} + +} // namespace boost + +#endif // BOOST_VARIANT_DETAIL_VARIANT_IO_HPP