71 lines
2.3 KiB
C++
71 lines
2.3 KiB
C++
// Copyright (c) 2001-2011 Hartmut Kaiser
|
|
//
|
|
// 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(BOOST_SPIRIT_KARMA_OSTREAM_ITERATOR_MAY_26_2007_1016PM)
|
|
#define BOOST_SPIRIT_KARMA_OSTREAM_ITERATOR_MAY_26_2007_1016PM
|
|
|
|
#if defined(_MSC_VER)
|
|
#pragma once
|
|
#endif
|
|
|
|
#include <iosfwd>
|
|
#include <iterator>
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
namespace boost { namespace spirit { namespace karma
|
|
{
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// We need our own implementation of an ostream_iterator just to be able
|
|
// to access the wrapped ostream, which is necessary for the
|
|
// stream_generator, where we must generate the output using the original
|
|
// ostream to retain possibly registered facets.
|
|
///////////////////////////////////////////////////////////////////////////
|
|
template <
|
|
typename T, typename Elem = char
|
|
, typename Traits = std::char_traits<Elem> >
|
|
class ostream_iterator
|
|
{
|
|
public:
|
|
typedef std::output_iterator_tag iterator_category;
|
|
typedef void value_type;
|
|
typedef void difference_type;
|
|
typedef void pointer;
|
|
typedef void reference;
|
|
typedef Elem char_type;
|
|
typedef Traits traits_type;
|
|
typedef std::basic_ostream<Elem, Traits> ostream_type;
|
|
typedef ostream_iterator<T, Elem, Traits> self_type;
|
|
|
|
ostream_iterator(ostream_type& os_, Elem const* delim_ = 0)
|
|
: os(&os_), delim(delim_) {}
|
|
|
|
self_type& operator= (T const& val)
|
|
{
|
|
*os << val;
|
|
if (0 != delim)
|
|
*os << delim;
|
|
return *this;
|
|
}
|
|
|
|
self_type& operator*() { return *this; }
|
|
self_type& operator++() { return *this; }
|
|
self_type operator++(int) { return *this; }
|
|
|
|
// expose underlying stream
|
|
ostream_type& get_ostream() { return *os; }
|
|
ostream_type const& get_ostream() const { return *os; }
|
|
|
|
// expose good bit of underlying stream object
|
|
bool good() const { return get_ostream().good(); }
|
|
|
|
protected:
|
|
ostream_type *os;
|
|
Elem const* delim;
|
|
};
|
|
|
|
}}}
|
|
|
|
#endif
|