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- ///////////////////////////////////////////////////////////////////////////////
- // accumulator_base.hpp
- //
- // Copyright 2005 Eric Niebler. 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)
- #ifndef BOOST_ACCUMULATORS_FRAMEWORK_ACCUMULATORS_BASE_HPP_EAN_28_10_2005
- #define BOOST_ACCUMULATORS_FRAMEWORK_ACCUMULATORS_BASE_HPP_EAN_28_10_2005
- #include <boost/mpl/placeholders.hpp>
- #include <boost/mpl/joint_view.hpp>
- #include <boost/mpl/single_view.hpp>
- #include <boost/mpl/fold.hpp>
- #include <boost/mpl/contains.hpp>
- #include <boost/mpl/empty_sequence.hpp>
- #include <boost/accumulators/framework/accumulator_concept.hpp>
- namespace boost { namespace accumulators
- {
- namespace detail
- {
- typedef void void_;
- }
- ///////////////////////////////////////////////////////////////////////////////
- // dont_care
- //
- struct dont_care
- {
- template<typename Args>
- dont_care(Args const &)
- {
- }
- };
- ///////////////////////////////////////////////////////////////////////////////
- // accumulator_base
- //
- struct accumulator_base
- {
- // hidden if defined in derived classes
- detail::void_ operator ()(dont_care)
- {
- }
- typedef mpl::false_ is_droppable;
- detail::void_ add_ref(dont_care)
- {
- }
- detail::void_ drop(dont_care)
- {
- }
- detail::void_ on_drop(dont_care)
- {
- }
- };
- }} // namespace boost::accumulators
- #endif
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