mirror of
https://github.com/libretro/scummvm.git
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88 lines
2.1 KiB
C++
88 lines
2.1 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License 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 this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#ifndef KYRA_UTIL_H
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#define KYRA_UTIL_H
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#include "common/func.h"
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namespace Kyra {
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template<class Res>
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struct Functor0 {
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virtual ~Functor0() {}
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virtual bool isValid() const = 0;
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virtual Res operator()() const = 0;
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};
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template<class Res, class T>
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class Functor0Mem : public Functor0<Res> {
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public:
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typedef Res (T::*FuncType)();
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Functor0Mem(T *t, const FuncType &func) : _t(t), _func(func) {}
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bool isValid() const { return _func != 0; }
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Res operator()() const {
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return (_t->*_func)();
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}
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private:
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mutable T *_t;
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Res (T::*_func)();
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};
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template<class Arg, class Res>
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struct Functor1 : public Common::UnaryFunction<Arg, Res> {
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virtual ~Functor1() {}
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virtual bool isValid() const = 0;
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virtual Res operator()(Arg) const = 0;
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};
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template<class Arg, class Res, class T>
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class Functor1Mem : public Functor1<Arg, Res> {
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public:
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typedef Res (T::*FuncType)(Arg);
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Functor1Mem(T *t, const FuncType &func) : _t(t), _func(func) {}
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bool isValid() const { return _func != 0; }
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Res operator()(Arg v1) const {
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return (_t->*_func)(v1);
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}
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private:
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mutable T *_t;
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Res (T::*_func)(Arg);
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};
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struct ScriptState;
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typedef Functor1<ScriptState*, int> Opcode;
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} // end of namespace Kyra
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#endif
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