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/* Callback management
Copyright (C) 2014-2021 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef CC1_PLUGIN_CALLBACKS_HH
#define CC1_PLUGIN_CALLBACKS_HH
#include "status.hh"
#include "hashtab.h"
namespace cc1_plugin
{
class connection;
// The type of a callback method.
typedef status callback_ftype (connection *);
// This class manages callback functions. A callback has a name and
// an underlying function. When a query packet arrives, the name is
// inspected and the corresponding function is called. A callback
// function has to know how to decode its own arguments, but
// wrappers are provided elsewhere to automate this.
class callbacks
{
public:
callbacks ();
~callbacks ();
callbacks (const callbacks &) = delete;
callbacks &operator= (const callbacks &) = delete;
// Add a callback named NAME. FUNC is the function to call when
// this method is invoked.
void add_callback (const char *name, callback_ftype *func);
// Look up a callback by name. Returns NULL if the method is not
// found.
callback_ftype *find_callback (const char *name);
private:
// The mapping.
htab_t m_registry;
};
};
#endif // CC1_PLUGIN_CALLBACKS_HH
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