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65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
/* Callback management
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Copyright (C) 2014 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef CC1_PLUGIN_CALLBACKS_HH
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#define CC1_PLUGIN_CALLBACKS_HH
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#include "status.hh"
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#include "hashtab.h"
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namespace cc1_plugin
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{
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class connection;
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// The type of a callback method.
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typedef status callback_ftype (connection *);
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// This class manages callback functions. A callback has a name and
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// an underlying function. When a query packet arrives, the name is
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// inspected and the corresponding function is called. A callback
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// function has to know how to decode its own arguments, but
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// wrappers are provided elsewhere to automate this.
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class callbacks
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{
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public:
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callbacks ();
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~callbacks ();
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// Add a callback named NAME. FUNC is the function to call when
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// this method is invoked.
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void add_callback (const char *name, callback_ftype *func);
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// Look up a callback by name. Returns NULL if the method is not
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// found.
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callback_ftype *find_callback (const char *name);
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private:
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// Declared but not defined to avoid use.
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callbacks (const callbacks &);
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callbacks &operator= (const callbacks &);
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// The mapping.
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htab_t m_registry;
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};
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};
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#endif // CC1_PLUGIN_CALLBACKS_HH
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