ocrm.bsky.social
the game where you go into mines and start crafting! but for consoles (forked directly from smartcmd's github)
1#ifndef BOOST_STATECHART_RESULT_HPP_INCLUDED
2#define BOOST_STATECHART_RESULT_HPP_INCLUDED
3//////////////////////////////////////////////////////////////////////////////
4// Copyright 2002-2010 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/assert.hpp>
12
13
14
15namespace boost
16{
17namespace statechart
18{
19namespace detail
20{
21
22
23
24//////////////////////////////////////////////////////////////////////////////
25enum reaction_result
26{
27 no_reaction,
28 do_forward_event,
29 do_discard_event,
30 do_defer_event,
31 consumed
32};
33
34struct result_utility;
35
36//////////////////////////////////////////////////////////////////////////////
37class safe_reaction_result
38{
39 public:
40 //////////////////////////////////////////////////////////////////////////
41 safe_reaction_result( const safe_reaction_result & other ) :
42 reactionResult_( other.reactionResult_ )
43 {
44 // This assert fails when an attempt is made to make multiple copies of
45 // a result value. This makes little sense, given the requirement that
46 // an obtained result value must be returned out of the react function.
47 BOOST_ASSERT( reactionResult_ != consumed );
48 other.reactionResult_ = consumed;
49 }
50
51 ~safe_reaction_result()
52 {
53 // This assert fails when an obtained result value is not returned out
54 // of the react() function. This can happen if the user accidentally
55 // makes more than one call to reaction functions inside react() or
56 // accidentally makes one or more calls to reaction functions outside
57 // react()
58 BOOST_ASSERT( reactionResult_ == consumed );
59 }
60
61 private:
62 //////////////////////////////////////////////////////////////////////////
63 safe_reaction_result( reaction_result reactionResult ) :
64 reactionResult_( reactionResult )
65 {
66 }
67
68 operator reaction_result() const
69 {
70 const reaction_result val = reactionResult_;
71 reactionResult_ = consumed;
72 return val;
73 }
74
75 safe_reaction_result & operator=( const safe_reaction_result & );
76
77 mutable reaction_result reactionResult_;
78
79 friend struct result_utility;
80};
81
82
83
84} // namespace detail
85
86
87
88#ifdef NDEBUG
89 typedef detail::reaction_result result;
90#else
91 typedef detail::safe_reaction_result result;
92#endif
93
94
95namespace detail
96{
97
98
99
100//////////////////////////////////////////////////////////////////////////////
101struct result_utility
102{
103 static ::boost::statechart::result make_result( reaction_result value )
104 {
105 return value;
106 }
107
108 static reaction_result get_result( ::boost::statechart::result value )
109 {
110 return value;
111 }
112};
113
114
115
116} // namespace detail
117} // namespace statechart
118} // namespace boost
119
120
121
122#endif