mirror of
https://github.com/libretro/scummvm.git
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77 lines
2.2 KiB
C++
77 lines
2.2 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef COMMON_FOREACH_H
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#define COMMON_FOREACH_H
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#include "common/scummsys.h"
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#if __cplusplus < 201103L
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namespace Common {
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class _Foreach_Container_Base_ {
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public:
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_Foreach_Container_Base_() : brk(1) { }
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mutable uint brk;
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};
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template<class T>
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class _Foreach_Container_ : public _Foreach_Container_Base_ {
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public:
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_Foreach_Container_(const T &co) : i(co.begin()), e(co.end()) { }
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void next() const {
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++i;
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brk = 1;
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}
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bool end() const { return i == e; }
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mutable typename T::const_iterator i;
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typename T::const_iterator e;
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};
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template<class T>
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inline _Foreach_Container_<T> _Create_Foreach_Container_(const T &c) {
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return _Foreach_Container_<T>(c);
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}
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template<class T>
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inline const _Foreach_Container_<T> *_Get_Foreach_Container_(const _Foreach_Container_Base_ *c, const T &) {
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return static_cast<const _Foreach_Container_<T> *>(c);
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}
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}
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#define foreach(var, container) \
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for (const Common::_Foreach_Container_Base_ &_FOREACH_CONTAINER_ = Common::_Create_Foreach_Container_(container);\
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!Common::_Get_Foreach_Container_(&_FOREACH_CONTAINER_, container)->end(); \
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Common::_Get_Foreach_Container_(&_FOREACH_CONTAINER_, container)->next()) \
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for (var = *Common::_Get_Foreach_Container_(&_FOREACH_CONTAINER_, container)->i;\
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_FOREACH_CONTAINER_.brk > 0; --_FOREACH_CONTAINER_.brk)
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#else
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#define foreach(var, container) for (var : container)
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#endif
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#endif
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