ceph/src/boost/libs/spirit/include/boost/spirit/home/classic/attribute/closure_context.hpp

   1 /*=============================================================================
   2     Copyright (c) 2002-2003 Joel de Guzman
   3     Copyright (c) 2002-2003 Hartmut Kaiser
   4     http://spirit.sourceforge.net/
   5
   6   Distributed under the Boost Software License, Version 1.0. (See accompanying
   7   file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   8 =============================================================================*/
   9 #if !defined(BOOST_SPIRIT_CLOSURE_CONTEXT_HPP)
  10 #define BOOST_SPIRIT_CLOSURE_CONTEXT_HPP
  11
  12 #include <boost/spirit/home/classic/namespace.hpp>
  13
  14 ///////////////////////////////////////////////////////////////////////////////
  15 namespace boost { namespace spirit {
  16
  17 BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN
  18
  19 #if !defined(BOOST_SPIRIT_CLOSURE_CONTEXT_LINKER_DEFINED)
  20 #define BOOST_SPIRIT_CLOSURE_CONTEXT_LINKER_DEFINED
  21
  22 ///////////////////////////////////////////////////////////////////////////////
  23 //
  24 //  closure_context_linker
  25 //  { helper template for the closure extendability }
  26 //
  27 //      This classes can be 'overloaded' (defined elsewhere), to plug
  28 //      in additional functionality into the closure parsing process.
  29 //
  30 ///////////////////////////////////////////////////////////////////////////////
  31
  32 template<typename ContextT>
  33 struct closure_context_linker : public ContextT
  34 {
  35     template <typename ParserT>
  36     closure_context_linker(ParserT const& p)
  37     : ContextT(p) {}
  38
  39     template <typename ParserT, typename ScannerT>
  40     void pre_parse(ParserT const& p, ScannerT const& scan)
  41     { ContextT::pre_parse(p, scan); }
  42
  43     template <typename ResultT, typename ParserT, typename ScannerT>
  44     ResultT&
  45     post_parse(ResultT& hit, ParserT const& p, ScannerT const& scan)
  46     { return ContextT::post_parse(hit, p, scan); }
  47 };
  48
  49 #endif // !defined(BOOST_SPIRIT_CLOSURE_CONTEXT_LINKER_DEFINED)
  50
  51 ///////////////////////////////////////////////////////////////////////////////
  52 BOOST_SPIRIT_CLASSIC_NAMESPACE_END
  53
  54 }} // namespace BOOST_SPIRIT_CLASSIC_NS
  55
  56 #endif // BOOST_SPIRIT_CLOSURE_CONTEXT_HPP