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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#ifndef KYRA_UTIL_H
#define KYRA_UTIL_H
#include "common/func.h"
namespace Kyra {
template<class Res>
struct Functor0 {
virtual ~Functor0() {}
virtual bool isValid() const = 0;
virtual Res operator()() const = 0;
};
template<class Res, class T>
class Functor0Mem : public Functor0<Res> {
public:
typedef Res (T::*FuncType)();
Functor0Mem(T *t, const FuncType &func) : _t(t), _func(func) {}
bool isValid() const { return _func != 0; }
Res operator()() const {
return (_t->*_func)();
}
private:
mutable T *_t;
Res (T::*_func)();
};
template<class Arg, class Res>
struct Functor1 : public Common::UnaryFunction<Arg, Res> {
virtual ~Functor1() {}
virtual bool isValid() const = 0;
virtual Res operator()(Arg) const = 0;
};
template<class Arg, class Res, class T>
class Functor1Mem : public Functor1<Arg, Res> {
public:
typedef Res (T::*FuncType)(Arg);
Functor1Mem(T *t, const FuncType &func) : _t(t), _func(func) {}
bool isValid() const { return _func != 0; }
Res operator()(Arg v1) const {
return (_t->*_func)(v1);
}
private:
mutable T *_t;
Res (T::*_func)(Arg);
};
struct ScriptState;
typedef Functor1<ScriptState*, int> Opcode;
} // end of namespace Kyra
#endif
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