zoukankan html css js c++ java

状态机

1. 安装boost库

yum install boost
yum install boost-devel
yum install boost-doc

2. 例子1

 1 #include <boost/statechart/transition.hpp>
 2 #include <boost/statechart/event.hpp>
 3 #include <boost/statechart/state_machine.hpp>
 4 #include <boost/statechart/simple_state.hpp>
 5 #include <boost/statechart/custom_reaction.hpp>
 6 #include <iostream>
 7 
 8 namespace sc = boost::statechart;
 9 
10 struct lostMoney : sc::event<lostMoney> {};
11 struct gotMoney : sc::event<gotMoney> {};
12 
13 struct HappyState;
14 struct SadState;
15 struct PersonSM : sc::state_machine<PersonSM, HappyState> {};
16 
17 struct HappyState : sc::simple_state<HappyState, PersonSM>
18 {
19     HappyState() { std::cout << "In Happy State..." << std::endl; }
20     typedef sc::transition<lostMoney, SadState> reactions;
21     ~HappyState() { std::cout << "In Hadppy State DESTRUCTION ..." << std::endl; }
22 };
23 
24 struct SadState : sc::simple_state<SadState, PersonSM>
25 {
26     SadState() { std::cout << "In Sad State..." << std::endl; }
27     typedef sc::transition<gotMoney, HappyState> reactions;
28     ~SadState() { std::cout << "In Sad State DESTRUCTION ..." << std::endl; }
29 };
30 
31 int main()
32 {
33     PersonSM sm;
34     sm.initiate();
35     sm.process_event(lostMoney());
36     sm.process_event(gotMoney());
37 }

输出结果：

In Happy State...
In Hadppy State DESTRUCTION ...
In Sad State...
In Sad State DESTRUCTION ...
In Happy State...
In Hadppy State DESTRUCTION ...

2. 例子：

 1 #include <boost/statechart/transition.hpp>
 2 #include <boost/statechart/event.hpp>
 3 #include <boost/statechart/state_machine.hpp>
 4 #include <boost/statechart/simple_state.hpp>
 5 #include <boost/statechart/custom_reaction.hpp>
 6 #include <iostream>
 7 
 8 namespace sc = boost::statechart;
 9 namespace mpl = boost::mpl;
10 
11 struct lostMoney : sc::event<lostMoney> {};
12 struct gotMoney : sc::event<gotMoney> {};
13 
14 struct HappyState;
15 struct SadState;
16 struct MoreHappyState;
17 struct PersonSM : sc::state_machine<PersonSM, HappyState> {};
18 
19 struct HappyState : sc::simple_state<HappyState, PersonSM>
20 {
21     HappyState() { std::cout << "In Happy State..." << std::endl; }
22 
23     typedef mpl::list<
24     sc::transition<lostMoney, SadState>,
25     sc::transition<gotMoney, MoreHappyState>
26     > reactions;
27 
28     ~HappyState() { std::cout << "In Hadppy State DESTRUCTION ..." << std::endl; }
29 };
30 
31 struct MoreHappyState : sc::simple_state<MoreHappyState, PersonSM>
32 {
33     MoreHappyState() { std::cout << "In More Happy State..." << std::endl; }
34     ~MoreHappyState() { std::cout << "In More Happy State DESTRUCTION ..." << std::endl; }
35 };
36 
37 struct SadState : sc::simple_state<SadState, PersonSM>
38 {
39     SadState() { std::cout << "In Sad State..." << std::endl; }
40     typedef sc::transition<gotMoney, HappyState> reactions;
41     ~SadState() { std::cout << "In Sad State DESTRUCTION ..." << std::endl; }
42 };
43 
44 int main()
45 {
46     PersonSM sm;
47     sm.initiate();
48     sm.process_event(lostMoney());
49     sm.process_event(gotMoney());
50     sm.process_event(gotMoney());
51 }

View Code

输出结果：

In Happy State...
In Hadppy State DESTRUCTION ...
In Sad State...
In Sad State DESTRUCTION ...
In Happy State...
In Hadppy State DESTRUCTION ...
In More Happy State...
In More Happy State DESTRUCTION ...

3. 例子3

 1 #include <boost/statechart/transition.hpp>
 2 #include <boost/statechart/event.hpp>
 3 #include <boost/statechart/state_machine.hpp>
 4 #include <boost/statechart/simple_state.hpp>
 5 #include <boost/statechart/custom_reaction.hpp>
 6 #include <iostream>
 7 
 8 namespace sc = boost::statechart;
 9 namespace mpl = boost::mpl;
10 
11 struct lostMoney : sc::event<lostMoney> {};
12 struct gotMoney : sc::event<gotMoney> {};
13 
14 struct HappyState;
15 struct SadState;
16 struct MoreHappyState;
17 struct PersonSM : sc::state_machine<PersonSM, HappyState> {};
18 
19 struct HappyState : sc::simple_state<HappyState, PersonSM>
20 {
21     HappyState() { std::cout << "In Happy State..." << std::endl; }
22 
23     typedef sc::custom_reaction<lostMoney> reactions;
24     sc::result react(const lostMoney &lm)
25     {
26         std::cout << "I receive lost money event" << std::endl;
27         return transit<SadState>();
28     }
29     ~HappyState() { std::cout << "In Hadppy State DESTRUCTION ..." << std::endl; }
30 };
31 
32 struct MoreHappyState : sc::simple_state<MoreHappyState, PersonSM>
33 {
34     MoreHappyState() { std::cout << "In More Happy State..." << std::endl; }
35     ~MoreHappyState() { std::cout << "In More Happy State DESTRUCTION ..." << std::endl; }
36 };
37 
38 struct SadState : sc::simple_state<SadState, PersonSM>
39 {
40     SadState() { std::cout << "In Sad State..." << std::endl; }
41     typedef sc::transition<gotMoney, HappyState> reactions;
42     ~SadState() { std::cout << "In Sad State DESTRUCTION ..." << std::endl; }
43 };
44 
45 int main()
46 {
47     PersonSM sm;
48     sm.initiate();
49     sm.process_event(lostMoney()); 
50 }#include <boost/statechart/transition.hpp>
51 #include <boost/statechart/event.hpp>
52 #include <boost/statechart/state_machine.hpp>
53 #include <boost/statechart/simple_state.hpp>
54 #include <boost/statechart/custom_reaction.hpp>
55 #include <iostream>
56 
57 namespace sc = boost::statechart;
58 namespace mpl = boost::mpl;
59 
60 struct lostMoney : sc::event<lostMoney> {};
61 struct gotMoney : sc::event<gotMoney> {};
62 
63 struct HappyState;
64 struct SadState;
65 struct MoreHappyState;
66 struct PersonSM : sc::state_machine<PersonSM, HappyState> {};
67 
68 struct HappyState : sc::simple_state<HappyState, PersonSM>
69 {
70     HappyState() { std::cout << "In Happy State..." << std::endl; }
71 
72     typedef sc::custom_reaction<lostMoney> reactions;
73     sc::result react(const lostMoney &lm)
74     {
75         std::cout << "I receive lost money event" << std::endl;
76         return transit<SadState>();
77     }
78     ~HappyState() { std::cout << "In Hadppy State DESTRUCTION ..." << std::endl; }
79 };
80 
81 struct MoreHappyState : sc::simple_state<MoreHappyState, PersonSM>
82 {
83     MoreHappyState() { std::cout << "In More Happy State..." << std::endl; }
84     ~MoreHappyState() { std::cout << "In More Happy State DESTRUCTION ..." << std::endl; }
85 };
86 
87 struct SadState : sc::simple_state<SadState, PersonSM>
88 {
89     SadState() { std::cout << "In Sad State..." << std::endl; }
90     typedef sc::transition<gotMoney, HappyState> reactions;
91     ~SadState() { std::cout << "In Sad State DESTRUCTION ..." << std::endl; }
92 };
93 
94 int main()
95 {
96     PersonSM sm;
97     sm.initiate();
98     sm.process_event(lostMoney()); 
99 }

View Code

输出结果：

In Happy State...
I receive lost money event
In Sad State...
In Sad State DESTRUCTION ...

参考资料：

1. C++学习 Boost状态机说明statechart

查看全文

相关阅读:
百度地图API 绘制矩形多边形等覆盖物
 不可多得的JS优化技巧
 vscode的settings.json配置（个人习惯）
npm 查看模块全部版本
 .net core 生成发布的文件里删除多余的语言包指定仅需要的语言
 225. Implement Stack using Queues （栈实现队列）
232. Implement Queue using Stacks(队列实现栈)
496. Next Greater Element I (单调栈)
239. Sliding Window Maximum （滑动窗口最大值，大根堆or 单调队列）
30. Substring with Concatenation of All Words （滑动窗口）

原文地址：https://www.cnblogs.com/sunbines/p/15084406.html