123 lines
4.2 KiB
C++
123 lines
4.2 KiB
C++
/*
|
|
*
|
|
* This program 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 2 of the License, or (at
|
|
* your option) any later version.
|
|
*
|
|
* This program 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 this program; if not, write to the Free Software Foundation,
|
|
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* In addition, as a special exception, the author gives permission to
|
|
* link the code of this program with the Half-Life Game Engine ("HL
|
|
* Engine") and Modified Game Libraries ("MODs") developed by Valve,
|
|
* L.L.C ("Valve"). You must obey the GNU General Public License in all
|
|
* respects for all of the code used other than the HL Engine and MODs
|
|
* from Valve. If you modify this file, you may extend this exception
|
|
* to your version of the file, but you are not obligated to do so. If
|
|
* you do not wish to do so, delete this exception statement from your
|
|
* version.
|
|
*
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
template<typename t_ret, typename ...t_args>
|
|
class IHookChain {
|
|
protected:
|
|
virtual ~IHookChain() {}
|
|
|
|
public:
|
|
virtual t_ret callNext(t_args... args) = 0;
|
|
virtual t_ret callOriginal(t_args... args) = 0;
|
|
};
|
|
|
|
template<typename t_ret, typename t_class, typename ...t_args>
|
|
class IHookChainClass {
|
|
protected:
|
|
virtual ~IHookChainClass() {}
|
|
|
|
public:
|
|
virtual t_ret callNext(t_class *, t_args... args) = 0;
|
|
virtual t_ret callOriginal(t_class *, t_args... args) = 0;
|
|
};
|
|
|
|
template<typename ...t_args>
|
|
class IVoidHookChain
|
|
{
|
|
protected:
|
|
virtual ~IVoidHookChain() {}
|
|
|
|
public:
|
|
virtual void callNext(t_args... args) = 0;
|
|
virtual void callOriginal(t_args... args) = 0;
|
|
};
|
|
|
|
template<typename t_class, typename ...t_args>
|
|
class IVoidHookChainClass
|
|
{
|
|
protected:
|
|
virtual ~IVoidHookChainClass() {}
|
|
|
|
public:
|
|
virtual void callNext(t_class *, t_args... args) = 0;
|
|
virtual void callOriginal(t_class *, t_args... args) = 0;
|
|
};
|
|
|
|
// Specifies priorities for hooks call order in the chain.
|
|
// For equal priorities first registered hook will be called first.
|
|
enum HookChainPriority
|
|
{
|
|
HC_PRIORITY_UNINTERRUPTABLE = 255, // Hook will be called before other hooks.
|
|
HC_PRIORITY_HIGH = 192, // Hook will be called before hooks with default priority.
|
|
HC_PRIORITY_DEFAULT = 128, // Default hook call priority.
|
|
HC_PRIORITY_MEDIUM = 64, // Hook will be called after hooks with default priority.
|
|
HC_PRIORITY_LOW = 0, // Hook will be called after all other hooks.
|
|
};
|
|
|
|
// Hook chain registry(for hooks [un]registration)
|
|
template<typename t_ret, typename ...t_args>
|
|
class IHookChainRegistry {
|
|
public:
|
|
typedef t_ret(*hookfunc_t)(IHookChain<t_ret, t_args...>*, t_args...);
|
|
|
|
virtual void registerHook(hookfunc_t hook, int priority = HC_PRIORITY_DEFAULT) = 0;
|
|
virtual void unregisterHook(hookfunc_t hook) = 0;
|
|
};
|
|
|
|
// Hook chain registry(for hooks [un]registration)
|
|
template<typename t_ret, typename t_class, typename ...t_args>
|
|
class IHookChainRegistryClass {
|
|
public:
|
|
typedef t_ret(*hookfunc_t)(IHookChainClass<t_ret, t_class, t_args...>*, t_class *, t_args...);
|
|
|
|
virtual void registerHook(hookfunc_t hook, int priority = HC_PRIORITY_DEFAULT) = 0;
|
|
virtual void unregisterHook(hookfunc_t hook) = 0;
|
|
};
|
|
|
|
// Hook chain registry(for hooks [un]registration)
|
|
template<typename ...t_args>
|
|
class IVoidHookChainRegistry {
|
|
public:
|
|
typedef void(*hookfunc_t)(IVoidHookChain<t_args...>*, t_args...);
|
|
|
|
virtual void registerHook(hookfunc_t hook, int priority = HC_PRIORITY_DEFAULT) = 0;
|
|
virtual void unregisterHook(hookfunc_t hook) = 0;
|
|
};
|
|
|
|
// Hook chain registry(for hooks [un]registration)
|
|
template<typename t_class, typename ...t_args>
|
|
class IVoidHookChainRegistryClass {
|
|
public:
|
|
typedef void(*hookfunc_t)(IVoidHookChainClass<t_class, t_args...>*, t_class *, t_args...);
|
|
|
|
virtual void registerHook(hookfunc_t hook, int priority = HC_PRIORITY_DEFAULT) = 0;
|
|
virtual void unregisterHook(hookfunc_t hook) = 0;
|
|
};
|