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1 | /*************************************************************************** |
2 | * Copyright (C) 2006 by Gerd v. Egidy * | |
3 | * gve@intra2net.com * | |
4 | * * | |
5 | * This library is free software; you can redistribute it and/or modify * | |
6 | * it under the terms of the GNU Lesser General Public License version * | |
7 | * 2.1 as published by the Free Software Foundation. * | |
8 | * * | |
9 | * This library is distributed in the hope that it will be useful, * | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
12 | * GNU Lesser General Public License for more details. * | |
13 | * * | |
14 | * You should have received a copy of the GNU Lesser General Public * | |
15 | * License along with this program; if not, write to the * | |
16 | * Free Software Foundation, Inc., * | |
17 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * | |
18 | ***************************************************************************/ | |
19 | #ifndef __LIBT2N_CONTAINER | |
20 | #define __LIBT2N_CONTAINER | |
21 | ||
22 | #include "command.hxx" | |
23 | #include "t2n_exception.hxx" | |
24 | ||
d184c648 GE |
25 | #include <iostream> |
26 | ||
7087e187 GE |
27 | namespace libt2n |
28 | { | |
29 | ||
30 | /** @brief contains the result (return value or exception) of a executed command | |
31 | */ | |
32 | class result_container | |
33 | { | |
34 | private: | |
35 | enum result_type_t { regular, exception } result_type; | |
36 | ||
37 | result *res; | |
38 | t2n_exception *ex; | |
39 | ||
40 | friend class boost::serialization::access; | |
41 | // When the class Archive corresponds to an output archive, the | |
42 | // & operator is defined similar to <<. Likewise, when the class Archive | |
43 | // is a type of input archive the & operator is defined similar to >>. | |
44 | template<class Archive> | |
45 | void serialize(Archive & ar, const unsigned int version) | |
46 | { | |
47 | ar & BOOST_SERIALIZATION_NVP(result_type); | |
48 | ar & BOOST_SERIALIZATION_NVP(res); | |
49 | ar & BOOST_SERIALIZATION_NVP(ex); | |
50 | } | |
51 | ||
52 | public: | |
53 | result_container() | |
54 | { res=0; ex=0; } | |
55 | ||
56 | result_container(result *_res) | |
57 | { set_result(_res); } | |
58 | result_container(t2n_exception *_ex) | |
59 | { set_exception(_ex); } | |
60 | ||
61 | void set_result(result *_res) | |
62 | { res=_res; ex=0; result_type=regular; } | |
63 | void set_exception(t2n_exception *_ex) | |
64 | { res=0; ex=_ex; result_type=exception; } | |
65 | ||
66 | /** @brief returns the result or throw the carried exception. | |
67 | ATTENTION: the result object is deleted in the destructor | |
68 | */ | |
69 | result* get_result(void) | |
70 | { | |
71 | if (result_type==exception) | |
72 | ex->do_throw(); | |
73 | return res; | |
74 | } | |
75 | ||
76 | /// deletes the carried result or exception objects | |
77 | ~result_container() | |
78 | { | |
79 | if (res) | |
80 | delete res; | |
81 | if (ex) | |
82 | delete ex; | |
83 | } | |
84 | }; | |
85 | ||
86 | /** @brief contains a command | |
87 | */ | |
88 | class command_container | |
89 | { | |
90 | private: | |
91 | command *cmd; | |
92 | ||
93 | friend class boost::serialization::access; | |
94 | template<class Archive> | |
95 | void serialize(Archive & ar, const unsigned int version) | |
96 | { | |
d184c648 | 97 | std::cerr << "ser: command_container" << std::endl; |
7087e187 GE |
98 | ar & BOOST_SERIALIZATION_NVP(cmd); |
99 | } | |
100 | ||
101 | public: | |
102 | command_container() | |
103 | { cmd=0; } | |
104 | command_container(command *_cmd) | |
105 | { cmd=_cmd; } | |
106 | ||
107 | /// return the contained command | |
108 | command* get_command() | |
109 | { return cmd; } | |
110 | ||
111 | ~command_container() | |
112 | { | |
113 | if (cmd) | |
114 | delete cmd; | |
115 | } | |
116 | }; | |
117 | ||
118 | } // namespace libt2n | |
119 | ||
120 | BOOST_CLASS_TRACKING(libt2n::result_container, boost::serialization::track_never) | |
121 | BOOST_CLASS_TRACKING(libt2n::command_container, boost::serialization::track_never) | |
122 | ||
123 | #endif | |
124 |