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// Boost string_algo library predicate_facade.hpp header file ---------------------------//
// Copyright Pavol Droba 2002-2003.
//
// 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)
// See http://www.boost.org/ for updates, documentation, and revision history.
#ifndef BOOST_STRING_PREDICATE_FACADE_HPP
#define BOOST_STRING_PREDICATE_FACADE_HPP
#include <boost/algorithm/string/config.hpp>
/*
\file boost/algorith/string/predicate_facade.hpp
This file contains predicate_facade definition. This template class is used
to identify classification predicates, so they can be combined using
composition operators.
*/
namespace boost {
namespace algorithm {
// predicate facade ------------------------------------------------------//
//! Predicate facade
/*!
This class allows to recognize classification
predicates, so that they can be combined using
composition operators.
Every classification predicate must be derived from this class.
*/
template<typename Derived>
struct predicate_facade {};
} // namespace algorithm
} // namespace boost
#endif // BOOST_STRING_CLASSIFICATION_DETAIL_HPP
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