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// 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_ITERATOR_MULTI_PASS_WRAPPER_JUL_12_2009_0914PM)
#define BOOST_SPIRIT_ITERATOR_MULTI_PASS_WRAPPER_JUL_12_2009_0914PM
#if defined(_MSC_VER)
#pragma once
#endif
#include <boost/mpl/bool.hpp>
#include <boost/spirit/home/support/detail/scoped_enum_emulation.hpp>
namespace boost { namespace spirit { namespace traits
{
// declare special functions allowing to integrate any multi_pass iterator
// with expectation points
// normal iterators require no special handling
BOOST_SCOPED_ENUM_START(clear_mode)
{
clear_if_enabled,
clear_always
};
BOOST_SCOPED_ENUM_END
template <typename Iterator>
void clear_queue(Iterator&
, BOOST_SCOPED_ENUM(clear_mode) /*mode*/ = clear_mode::clear_if_enabled)
{}
template <typename Iterator>
void inhibit_clear_queue(Iterator&, bool)
{}
template <typename Iterator>
bool inhibit_clear_queue(Iterator&)
{
return false;
}
// Helper template to recognize a multi_pass iterator. This specialization
// will be instantiated for any non-multi_pass iterator.
template <typename Iterator>
struct is_multi_pass : mpl::false_ {};
}}}
#endif
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