12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152 |
- // 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
|