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ab103e33 | 1 | /* Callback management |
fbd26352 | 2 | Copyright (C) 2014-2019 Free Software Foundation, Inc. |
ab103e33 | 3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 3, or (at your option) any later | |
9 | version. | |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GCC; see the file COPYING3. If not see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #ifndef CC1_PLUGIN_CALLBACKS_HH | |
21 | #define CC1_PLUGIN_CALLBACKS_HH | |
22 | ||
23 | #include "status.hh" | |
24 | #include "hashtab.h" | |
25 | ||
26 | namespace cc1_plugin | |
27 | { | |
28 | class connection; | |
29 | ||
30 | // The type of a callback method. | |
31 | typedef status callback_ftype (connection *); | |
32 | ||
33 | // This class manages callback functions. A callback has a name and | |
34 | // an underlying function. When a query packet arrives, the name is | |
35 | // inspected and the corresponding function is called. A callback | |
36 | // function has to know how to decode its own arguments, but | |
37 | // wrappers are provided elsewhere to automate this. | |
38 | class callbacks | |
39 | { | |
40 | public: | |
41 | ||
42 | callbacks (); | |
43 | ~callbacks (); | |
44 | ||
45 | // Add a callback named NAME. FUNC is the function to call when | |
46 | // this method is invoked. | |
47 | void add_callback (const char *name, callback_ftype *func); | |
48 | ||
49 | // Look up a callback by name. Returns NULL if the method is not | |
50 | // found. | |
51 | callback_ftype *find_callback (const char *name); | |
52 | ||
53 | private: | |
54 | ||
55 | // Declared but not defined to avoid use. | |
56 | callbacks (const callbacks &); | |
57 | callbacks &operator= (const callbacks &); | |
58 | ||
59 | // The mapping. | |
60 | htab_t m_registry; | |
61 | }; | |
62 | }; | |
63 | ||
64 | #endif // CC1_PLUGIN_CALLBACKS_HH |