boost/spirit/home/support/iterators/multi_pass_fwd.hpp
/*=============================================================================
Copyright (c) 2007 Tobias Schwinger
Copyright (c) 2001-2011 Hartmut Kaiser
http://spirit.sourceforge.net/
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_ITERATOR_MULTI_PASS_FWD_APR_18_2008_1102AM)
#define BOOST_SPIRIT_ITERATOR_MULTI_PASS_FWD_APR_18_2008_1102AM
#include <cstddef>
#include <boost/spirit/home/support/multi_pass_wrapper.hpp>
#include <boost/swap.hpp>
namespace boost { namespace spirit {
namespace iterator_policies
{
// input policies
struct input_iterator;
struct buffering_input_iterator;
struct istream;
struct lex_input;
struct functor_input;
struct split_functor_input;
// ownership policies
struct ref_counted;
struct first_owner;
// checking policies
class illegal_backtracking;
struct buf_id_check;
struct no_check;
// storage policies
struct split_std_deque;
template<std::size_t N> struct fixed_size_queue;
// policy combiner
#if defined(BOOST_SPIRIT_DEBUG)
template<typename Ownership = ref_counted
, typename Checking = buf_id_check
, typename Input = buffering_input_iterator
, typename Storage = split_std_deque>
struct default_policy;
#else
template<typename Ownership = ref_counted
, typename Checking = no_check
, typename Input = buffering_input_iterator
, typename Storage = split_std_deque>
struct default_policy;
#endif
}
template <typename T
, typename Policies = iterator_policies::default_policy<> >
class multi_pass;
template <typename T, typename Policies>
void swap(multi_pass<T, Policies> &x, multi_pass<T, Policies> &y);
}} // namespace boost::spirit
namespace boost { namespace spirit { namespace traits
{
// declare special functions allowing to integrate any multi_pass iterator
// with expectation points
// multi_pass iterators require special handling (for the non-specialized
// versions of these functions see support/multi_pass_wrapper.hpp)
template <typename T, typename Policies>
void clear_queue(multi_pass<T, Policies>&
, BOOST_SCOPED_ENUM(clear_mode) mode = clear_mode::clear_if_enabled);
template <typename T, typename Policies>
void inhibit_clear_queue(multi_pass<T, Policies>&, bool);
template <typename T, typename Policies>
bool inhibit_clear_queue(multi_pass<T, Policies>&);
// Helper template to recognize a multi_pass iterator. This specialization
// will be instantiated for any multi_pass iterator.
template <typename T, typename Policies>
struct is_multi_pass<multi_pass<T, Policies> > : mpl::true_ {};
}}}
#endif