ceph/src/boost/libs/statechart/include/boost/statechart/detail/leaf_state.hpp

   1 #ifndef BOOST_STATECHART_DETAIL_LEAF_STATE_HPP_INCLUDED
   2 #define BOOST_STATECHART_DETAIL_LEAF_STATE_HPP_INCLUDED
   3 //////////////////////////////////////////////////////////////////////////////
   4 // Copyright 2002-2006 Andreas Huber Doenni
   5 // Distributed under the Boost Software License, Version 1.0. (See accompany-
   6 // ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7 //////////////////////////////////////////////////////////////////////////////
   8
   9
  10
  11 #include <boost/statechart/detail/state_base.hpp>
  12
  13
  14
  15 namespace boost
  16 {
  17 namespace statechart
  18 {
  19 namespace detail
  20 {
  21
  22
  23
  24 //////////////////////////////////////////////////////////////////////////////
  25 template< class Allocator, class RttiPolicy >
  26 class leaf_state : public state_base< Allocator, RttiPolicy >
  27 {
  28   typedef state_base< Allocator, RttiPolicy > base_type;
  29   protected:
  30     //////////////////////////////////////////////////////////////////////////
  31     leaf_state( typename RttiPolicy::id_provider_type idProvider ) :
  32       base_type( idProvider )
  33     {
  34     }
  35
  36     ~leaf_state() {}
  37
  38   public:
  39     //////////////////////////////////////////////////////////////////////////
  40     // The following declarations should be private.
  41     // They are only public because many compilers lack template friends.
  42     //////////////////////////////////////////////////////////////////////////
  43     void set_list_position(
  44       typename base_type::state_list_type::iterator listPosition )
  45     {
  46       listPosition_ = listPosition;
  47     }
  48
  49     typedef typename base_type::leaf_state_ptr_type
  50       direct_state_base_ptr_type;
  51
  52     virtual void remove_from_state_list(
  53       typename base_type::state_list_type::iterator & statesEnd,
  54       typename base_type::node_state_base_ptr_type & pOutermostUnstableState,
  55       bool performFullExit )
  56     {
  57       --statesEnd;
  58       swap( *listPosition_, *statesEnd );
  59       ( *listPosition_ )->set_list_position( listPosition_ );
  60       direct_state_base_ptr_type & pState = *statesEnd;
  61       // Because the list owns the leaf_state, this leads to the immediate
  62       // termination of this state.
  63       pState->exit_impl( pState, pOutermostUnstableState, performFullExit );
  64     }
  65
  66     virtual void exit_impl(
  67       direct_state_base_ptr_type & pSelf,
  68       typename base_type::node_state_base_ptr_type & pOutermostUnstableState,
  69       bool performFullExit ) = 0;
  70
  71   private:
  72     //////////////////////////////////////////////////////////////////////////
  73     typename base_type::state_list_type::iterator listPosition_;
  74 };
  75
  76
  77
  78 } // namespace detail
  79 } // namespace statechart
  80 } // namespace boost
  81
  82
  83
  84 #endif