| 1 | /* Callback management |
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| 2 | Copyright (C) 2014-2023 Free Software Foundation, Inc. |
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| 3 | |
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| 4 | This file is part of GCC. |
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| 5 | |
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| 6 | GCC is free software; you can redistribute it and/or modify it under |
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| 7 | the terms of the GNU General Public License as published by the Free |
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| 8 | Software Foundation; either version 3, or (at your option) any later |
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| 9 | version. |
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| 10 | |
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| 11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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| 13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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| 14 | for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU General Public License |
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| 17 | along with GCC; see the file COPYING3. If not see |
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| 18 | <http://www.gnu.org/licenses/>. */ |
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| 19 | |
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| 20 | #ifndef CC1_PLUGIN_CALLBACKS_HH |
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| 21 | #define CC1_PLUGIN_CALLBACKS_HH |
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| 22 | |
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| 23 | #include "status.hh" |
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| 24 | #include "hashtab.h" |
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| 25 | |
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| 26 | namespace cc1_plugin |
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| 27 | { |
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| 28 | class connection; |
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| 29 | |
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| 30 | // The type of a callback method. |
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| 31 | typedef status callback_ftype (connection *); |
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| 32 | |
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| 33 | // This class manages callback functions. A callback has a name and |
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| 34 | // an underlying function. When a query packet arrives, the name is |
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| 35 | // inspected and the corresponding function is called. A callback |
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| 36 | // function has to know how to decode its own arguments, but |
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| 37 | // wrappers are provided elsewhere to automate this. |
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| 38 | class callbacks |
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| 39 | { |
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| 40 | public: |
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| 41 | |
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| 42 | callbacks (); |
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| 43 | ~callbacks (); |
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| 44 | |
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| 45 | callbacks (const callbacks &) = delete; |
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| 46 | callbacks &operator= (const callbacks &) = delete; |
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| 47 | |
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| 48 | // Add a callback named NAME. FUNC is the function to call when |
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| 49 | // this method is invoked. |
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| 50 | void add_callback (const char *name, callback_ftype *func); |
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| 51 | |
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| 52 | // Look up a callback by name. Returns NULL if the method is not |
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| 53 | // found. |
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| 54 | callback_ftype *find_callback (const char *name); |
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| 55 | |
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| 56 | private: |
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| 57 | |
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| 58 | // The mapping. |
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| 59 | htab_t m_registry; |
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| 60 | }; |
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| 61 | }; |
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| 62 | |
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| 63 | #endif // CC1_PLUGIN_CALLBACKS_HH |
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| 64 | |
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