1/* Callback management 2 Copyright (C) 2014 Free Software Foundation, Inc. 3 4This file is part of GCC. 5 6GCC is free software; you can redistribute it and/or modify it under 7the terms of the GNU General Public License as published by the Free 8Software Foundation; either version 3, or (at your option) any later 9version. 10 11GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12WARRANTY; without even the implied warranty of MERCHANTABILITY or 13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14for more details. 15 16You should have received a copy of the GNU General Public License 17along 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 26namespace 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 65