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 {
count_baseboost::statechart::detail::count_base28   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     }
count_baseboost::statechart::detail::count_base35 
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     {
ref_counted() const46       listPosition_ = listPosition;
47     }
48 
49     typedef typename base_type::leaf_state_ptr_type
50       direct_state_base_ptr_type;
ref_count() const51 
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     }
operator =(const counted_base &)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:
add_ref() const72     //////////////////////////////////////////////////////////////////////////
73     typename base_type::state_list_type::iterator listPosition_;
74 };
75 
76 
release() const77 
78 } // namespace detail
79 } // namespace statechart
80 } // namespace boost
81 
82 
83 
84 #endif
85