1 #ifndef BOOST_STATECHART_STATE_HPP_INCLUDED
2 #define BOOST_STATECHART_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/simple_state.hpp>
12 
13 #include <boost/mpl/list.hpp>
14 
15 
16 
17 namespace boost
18 {
19 namespace statechart
20 {
21 
22 
23 
24 template< class MostDerived,
25           class Context,
26           class InnerInitial = mpl::list<>,
27           history_mode historyMode = has_no_history >
28 class state : public simple_state<
29   MostDerived, Context, InnerInitial, historyMode >
30 {
31   typedef simple_state< MostDerived, Context, InnerInitial, historyMode >
32     base_type;
33 
34   protected:
35     //////////////////////////////////////////////////////////////////////////
36     struct my_context
37     {
my_contextboost::statechart::state::my_context38       my_context( typename base_type::context_ptr_type pContext ) :
39         pContext_( pContext )
40       {
41       }
42 
43       typename base_type::context_ptr_type pContext_;
44     };
45 
46     typedef state my_base;
47 
state(my_context ctx)48     state( my_context ctx )
49     {
50       this->set_context( ctx.pContext_ );
51     }
52 
~state()53     ~state() {}
54 
55   public:
56     //////////////////////////////////////////////////////////////////////////
57     // The following declarations should be private.
58     // They are only public because many compilers lack template friends.
59     //////////////////////////////////////////////////////////////////////////
60     // See base class for documentation
61     typedef typename base_type::outermost_context_base_type
62       outermost_context_base_type;
63     typedef typename base_type::inner_context_ptr_type inner_context_ptr_type;
64     typedef typename base_type::context_ptr_type context_ptr_type;
65     typedef typename base_type::inner_initial_list inner_initial_list;
66 
initial_deep_construct(outermost_context_base_type & outermostContextBase)67     static void initial_deep_construct(
68       outermost_context_base_type & outermostContextBase )
69     {
70       deep_construct( &outermostContextBase, outermostContextBase );
71     }
72 
73     // See base class for documentation
deep_construct(const context_ptr_type & pContext,outermost_context_base_type & outermostContextBase)74     static void deep_construct(
75       const context_ptr_type & pContext,
76       outermost_context_base_type & outermostContextBase )
77     {
78       const inner_context_ptr_type pInnerContext(
79         shallow_construct( pContext, outermostContextBase ) );
80       base_type::template deep_construct_inner< inner_initial_list >(
81         pInnerContext, outermostContextBase );
82     }
83 
shallow_construct(const context_ptr_type & pContext,outermost_context_base_type & outermostContextBase)84     static inner_context_ptr_type shallow_construct(
85       const context_ptr_type & pContext,
86       outermost_context_base_type & outermostContextBase )
87     {
88       const inner_context_ptr_type pInnerContext(
89         new MostDerived( my_context( pContext ) ) );
90       outermostContextBase.add( pInnerContext );
91       return pInnerContext;
92     }
93 };
94 
95 
96 
97 } // namespace statechart
98 } // namespace boost
99 
100 
101 
102 #endif
103