pa.md: Revert change to use ordered_comparison_operator instead of...
[official-gcc.git] / libcc1 / callbacks.hh
blobe2d19b888b375456fb9f7fc3bbd73c8c619e5330
1 /* Callback management
2 Copyright (C) 2014-2020 Free Software Foundation, Inc.
4 This file is part of GCC.
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.
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.
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/>. */
20 #ifndef CC1_PLUGIN_CALLBACKS_HH
21 #define CC1_PLUGIN_CALLBACKS_HH
23 #include "status.hh"
24 #include "hashtab.h"
26 namespace cc1_plugin
28 class connection;
30 // The type of a callback method.
31 typedef status callback_ftype (connection *);
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
40 public:
42 callbacks ();
43 ~callbacks ();
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);
49 // Look up a callback by name. Returns NULL if the method is not
50 // found.
51 callback_ftype *find_callback (const char *name);
53 private:
55 // Declared but not defined to avoid use.
56 callbacks (const callbacks &);
57 callbacks &operator= (const callbacks &);
59 // The mapping.
60 htab_t m_registry;
64 #endif // CC1_PLUGIN_CALLBACKS_HH