// Copyright (c) 2001-2011 Hartmut Kaiser
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#if !defined(BOOST_SPIRIT_ITERATOR_MULTI_PASS_WRAPPER_JUL_12_2009_0914PM)
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#define BOOST_SPIRIT_ITERATOR_MULTI_PASS_WRAPPER_JUL_12_2009_0914PM
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#if defined(_MSC_VER)
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#pragma once
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#endif
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#include <boost/mpl/bool.hpp>
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#include <boost/spirit/home/support/detail/scoped_enum_emulation.hpp>
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namespace boost { namespace spirit { namespace traits
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{
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// declare special functions allowing to integrate any multi_pass iterator
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// with expectation points
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// normal iterators require no special handling
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BOOST_SCOPED_ENUM_START(clear_mode)
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{
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clear_if_enabled,
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clear_always
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};
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BOOST_SCOPED_ENUM_END
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template <typename Iterator>
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void clear_queue(Iterator&
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, BOOST_SCOPED_ENUM(clear_mode) /*mode*/ = clear_mode::clear_if_enabled)
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{}
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template <typename Iterator>
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void inhibit_clear_queue(Iterator&, bool)
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{}
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template <typename Iterator>
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bool inhibit_clear_queue(Iterator&)
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{
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return false;
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}
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// Helper template to recognize a multi_pass iterator. This specialization
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// will be instantiated for any non-multi_pass iterator.
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template <typename Iterator>
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struct is_multi_pass : mpl::false_ {};
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}}}
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#endif
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