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56 lines
1.8 KiB
C++
56 lines
1.8 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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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 Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (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 Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef NL_MUTABLE_CONTAINER_H
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#define NL_MUTABLE_CONTAINER_H
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namespace NLMISC
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{
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/** Container wrapper that allow read/write access to element stored in
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* a const container.
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* In fact, the template only allow calling begin() and end() over
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* a const container.
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* This prevent the user to change the structure of the container.
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* Usage :
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*
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* class foo
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* {
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* typedef TMutableContainer<vector<string> > TMyCont;
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* TMyCont _MyCont;
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*
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* public:
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* // return the container with mutable item content but const item list
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* const TMyCont getContainer() const { return _MyCont; };
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* }
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*
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*/
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template <class BaseContainer>
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struct TMutableContainer : public BaseContainer
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{
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typename BaseContainer::iterator begin() const
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{
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return const_cast<BaseContainer*>(static_cast<const BaseContainer*>(this))->begin();
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}
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typename BaseContainer::iterator end() const
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{
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return const_cast<BaseContainer*>(static_cast<const BaseContainer*>(this))->end();
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}
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};
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} // namespace NLMISC
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#endif // NL_MUTABLE_CONTAINER_H
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