classic/actor/ref_const_ref_actor.hpp

0001 /*=============================================================================
0002     Copyright (c) 2003 Jonathan de Halleux (dehalleux@pelikhan.com)
0003     http://spirit.sourceforge.net/
0004
0005   Distributed under the Boost Software License, Version 1.0. (See accompanying
0006   file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0007 =============================================================================*/
0008 #ifndef BOOST_SPIRIT_ACTOR_REF_CONST_REF_ACTOR_HPP
0009 #define BOOST_SPIRIT_ACTOR_REF_CONST_REF_ACTOR_HPP
0010
0011 #include <boost/spirit/home/classic/namespace.hpp>
0012
0013 namespace boost { namespace spirit {
0014
0015 BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN
0016
0017     ///////////////////////////////////////////////////////////////////////////
0018     //  Summary:
0019     //  A semantic action policy holder. This holder stores a reference to ref
0020     //  and a const reference to value_ref.
0021     //  act methods are feed with ref and value_ref. The parse result is
0022     //  not used by this holder.
0023     //
0024     //  (This doc uses convention available in actors.hpp)
0025     //
0026     //  Constructor:
0027     //      ...(T& ref_, ValueT const& value_ref_);
0028     //      where ref_ and value_ref_ are stored in the holder.
0029     //
0030     //  Action calls:
0031     //      act(ref, value_ref);
0032     //
0033     //  () operators: both
0034     //
0035     ///////////////////////////////////////////////////////////////////////////
0036     template<
0037         typename T,
0038         typename ValueT,
0039         typename ActionT
0040     >
0041     class ref_const_ref_actor : public ActionT
0042     {
0043     private:
0044         T& ref;
0045         ValueT const& value_ref;
0046     public:
0047         ref_const_ref_actor(
0048             T& ref_,
0049             ValueT const& value_ref_
0050             )
0051         :
0052             ref(ref_),
0053             value_ref(value_ref_)
0054         {}
0055
0056
0057         template<typename T2>
0058         void operator()(T2 const& /*val*/) const
0059         {
0060             this->act(ref,value_ref); // defined in ActionT
0061         }
0062
0063
0064         template<typename IteratorT>
0065             void operator()(
0066             IteratorT const& /*first*/,
0067             IteratorT const& /*last*/
0068             ) const
0069         {
0070             this->act(ref,value_ref); // defined in ActionT
0071         }
0072     };
0073
0074 BOOST_SPIRIT_CLASSIC_NAMESPACE_END
0075
0076 }}
0077
0078 #endif