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/*=============================================================================
Copyright (c) 1999-2003 Jaakko Jarvi
Copyright (c) 1999-2003 Jeremiah Willcock
Copyright (c) 2001-2011 Joel de Guzman
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)
==============================================================================*/
#if !defined(FUSION_OUT_05052005_0121)
#define FUSION_OUT_05052005_0121
#include <boost/fusion/support/config.hpp>
#include <ostream>
#include <boost/fusion/sequence/io/detail/manip.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/fusion/sequence/intrinsic/begin.hpp>
#include <boost/fusion/sequence/intrinsic/end.hpp>
#include <boost/fusion/iterator/deref.hpp>
#include <boost/fusion/iterator/next.hpp>
#include <boost/fusion/iterator/equal_to.hpp>
namespace boost { namespace fusion { namespace detail
{
template <typename Tag>
struct delimiter_out
{
// print a delimiter
template <typename OS>
static void
print(OS& os, char const* delim, mpl::false_ = mpl::false_())
{
detail::string_ios_manip<Tag, OS> manip(os);
manip.print(delim);
}
template <typename OS>
static void
print(OS&, char const*, mpl::true_)
{
}
};
struct print_sequence_loop
{
template <typename OS, typename First, typename Last>
static void
call(OS&, First const&, Last const&, mpl::true_)
{
}
template <typename OS, typename First, typename Last>
static void
call(OS& os, First const& first, Last const& last, mpl::false_)
{
result_of::equal_to<
typename result_of::next<First>::type
, Last
>
is_last;
os << *first;
delimiter_out<tuple_delimiter_tag>::print(os, " ", is_last);
call(os, fusion::next(first), last, is_last);
}
template <typename OS, typename First, typename Last>
static void
call(OS& os, First const& first, Last const& last)
{
result_of::equal_to<First, Last> eq;
call(os, first, last, eq);
}
};
template <typename OS, typename Sequence>
inline void
print_sequence(OS& os, Sequence const& seq)
{
delimiter_out<tuple_open_tag>::print(os, "(");
print_sequence_loop::call(os, fusion::begin(seq), fusion::end(seq));
delimiter_out<tuple_close_tag>::print(os, ")");
}
}}}
#endif
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