/Src/Dependencies/Boost/boost/spirit/home/support/iterators/detail/multi_pass.hpp
http://hadesmem.googlecode.com/ · C++ Header · 132 lines · 83 code · 31 blank · 18 comment · 0 complexity · 87857f650459e530b6f06eaf821d32c2 MD5 · raw file
- // Copyright (c) 2001 Daniel C. Nuffer
- // 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_MAR_16_2007_1122AM)
- #define BOOST_SPIRIT_ITERATOR_MULTI_PASS_MAR_16_2007_1122AM
- #include <boost/config.hpp>
- #include <boost/spirit/home/support/iterators/multi_pass_fwd.hpp>
- #include <boost/iterator.hpp>
- #include <boost/mpl/bool.hpp>
- #include <iterator>
- #include <algorithm>
- ///////////////////////////////////////////////////////////////////////////////
- namespace boost { namespace spirit { namespace detail
- {
- #if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
- ///////////////////////////////////////////////////////////////////////////
- // Meta-function to generate a std::iterator<> base class for multi_pass.
- // This is used mainly to improve conformance of compilers not supporting
- // PTS and thus relying on inheritance to recognize an iterator.
- //
- // We are using boost::iterator<> because it offers an automatic
- // workaround for broken std::iterator<> implementations.
- ///////////////////////////////////////////////////////////////////////////
- template <typename T, typename InputPolicy>
- struct iterator_base_creator
- {
- typedef typename InputPolicy::BOOST_NESTED_TEMPLATE unique<T> input_type;
- typedef boost::iterator <
- std::forward_iterator_tag
- , typename input_type::value_type
- , typename input_type::difference_type
- , typename input_type::pointer
- , typename input_type::reference
- > type;
- };
- #endif
- ///////////////////////////////////////////////////////////////////////////
- // Default implementations of the different policies to be used with a
- // multi_pass iterator
- ///////////////////////////////////////////////////////////////////////////
- struct default_input_policy
- {
- default_input_policy() {}
- template <typename Functor>
- default_input_policy(Functor const&) {}
- template <typename MultiPass>
- static void destroy(MultiPass&) {}
- void swap(default_input_policy&) {}
- template <typename MultiPass, typename TokenType>
- static void advance_input(MultiPass& mp);
- template <typename MultiPass>
- static typename MultiPass::reference get_input(MultiPass& mp);
- template <typename MultiPass>
- static bool input_at_eof(MultiPass const& mp);
- template <typename MultiPass, typename TokenType>
- static bool input_is_valid(MultiPass& mp, TokenType& curtok);
- };
- struct default_ownership_policy
- {
- template <typename MultiPass>
- static void destroy(MultiPass&) {}
- void swap(default_ownership_policy&) {}
- template <typename MultiPass>
- static void clone(MultiPass&) {}
- template <typename MultiPass>
- static bool release(MultiPass& mp);
- template <typename MultiPass>
- static bool is_unique(MultiPass const& mp);
- };
- struct default_storage_policy
- {
- template <typename MultiPass>
- static void destroy(MultiPass&) {}
- void swap(default_storage_policy&) {}
- template <typename MultiPass>
- static typename MultiPass::reference dereference(MultiPass const& mp);
- template <typename MultiPass>
- static void increment(MultiPass&) {}
- template <typename MultiPass>
- static void clear_queue(MultiPass&) {}
- template <typename MultiPass>
- static bool is_eof(MultiPass const& mp);
- template <typename MultiPass>
- static bool equal_to(MultiPass const& mp, MultiPass const& x);
- template <typename MultiPass>
- static bool less_than(MultiPass const& mp, MultiPass const& x);
- };
- struct default_checking_policy
- {
- template <typename MultiPass>
- static void destroy(MultiPass&) {}
- void swap(default_checking_policy&) {}
- template <typename MultiPass>
- static void docheck(MultiPass const&) {}
- template <typename MultiPass>
- static void clear_queue(MultiPass&) {}
- };
- }}}
- #endif