# OgreIteratorWrappers.h

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    00001 /*
    00002 -----------------------------------------------------------------------------
    00003 This source file is part of OGRE
    00004     (Object-oriented Graphics Rendering Engine)
    00005 For the latest info, see http://www.ogre3d.org/
    00006
    00007 Copyright (c) 2000-2006 Torus Knot Software Ltd
    00008 Also see acknowledgements in Readme.html
    00009
    00010 This program is free software; you can redistribute it and/or modify it under
    00011 the terms of the GNU Lesser General Public License as published by the Free Software
    00012 Foundation; either version 2 of the License, or (at your option) any later
    00013 version.
    00014
    00015 This program is distributed in the hope that it will be useful, but WITHOUT
    00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
    00018
    00019 You should have received a copy of the GNU Lesser General Public License along with
    00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
    00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to
    00022 http://www.gnu.org/copyleft/lesser.txt.
    00023
    00024 You may alternatively use this source under the terms of a specific version of
    00025 the OGRE Unrestricted License provided you have obtained such a license from
    00026 Torus Knot Software Ltd.
    00027 -----------------------------------------------------------------------------
    00028 */
    00029 #ifndef __IteratorWrappers_H__
    00030 #define __IteratorWrappers_H__
    00031
    00032 #include "OgrePrerequisites.h"
    00033
    00034 namespace Ogre {
    00035
    00050     template <class T>
    00051     class VectorIterator
    00052     {
    00053     private:
    00054         typename T::iterator mCurrent;
    00055         typename T::iterator mEnd;
    00057         VectorIterator() {};
    00058     public:
    00059         typedef typename T::value_type ValueType;
    00060
    00065         VectorIterator(typename T::iterator start, typename T::iterator end)
    00066             : mCurrent(start), mEnd(end)
    00067         {
    00068         }
    00069
    00074         explicit VectorIterator(T& c)
    00075             : mCurrent(c.begin()), mEnd(c.end())
    00076         {
    00077         }
    00078
    00080         bool hasMoreElements(void) const
    00081         {
    00082             return mCurrent != mEnd;
    00083         }
    00084
    00086         typename T::value_type getNext(void)
    00087         {
    00088             return *mCurrent++;
    00089         }
    00091         typename T::value_type peekNext(void)
    00092         {
    00093             return *mCurrent;
    00094         }
    00096         typename T::pointer peekNextPtr(void)
    00097         {
    00098             return &(*mCurrent);
    00099         }
    00101         void moveNext(void)
    00102         {
    00103             ++mCurrent;
    00104         }
    00105
    00106
    00107
    00108     };
    00109
    00124     template <class T>
    00125     class MapIterator
    00126     {
    00127     private:
    00128         typename T::iterator mCurrent;
    00129         typename T::iterator mEnd;
    00131         MapIterator() {};
    00132     public:
    00133         typedef typename T::mapped_type MappedType;
    00134         typedef typename T::key_type KeyType;
    00135
    00140         MapIterator(typename T::iterator start, typename T::iterator end)
    00141             : mCurrent(start), mEnd(end)
    00142         {
    00143         }
    00144
    00149         explicit MapIterator(T& c)
    00150             : mCurrent(c.begin()), mEnd(c.end())
    00151         {
    00152         }
    00153
    00155         bool hasMoreElements(void) const
    00156         {
    00157             return mCurrent != mEnd;
    00158         }
    00159
    00161         typename T::mapped_type getNext(void)
    00162         {
    00163             return (mCurrent++)->second;
    00164         }
    00166         typename T::mapped_type peekNextValue(void)
    00167         {
    00168             return mCurrent->second;
    00169         }
    00171         typename T::key_type peekNextKey(void)
    00172         {
    00173             return mCurrent->first;
    00174         }
    00176         MapIterator<T> & operator=( MapIterator<T> &rhs )
    00177         {
    00178             mCurrent = rhs.mCurrent;
    00179             mEnd = rhs.mEnd;
    00180             return *this;
    00181         }
    00184         typename T::mapped_type* peekNextValuePtr(void)
    00185         {
    00186             return &(mCurrent->second);
    00187         }
    00189         void moveNext(void)
    00190         {
    00191             ++mCurrent;
    00192         }
    00193
    00194
    00195
    00196     };
    00211     template <class T>
    00212     class ConstVectorIterator
    00213     {
    00214     private:
    00215         mutable typename T::const_iterator mCurrent;
    00216         typename T::const_iterator mEnd;
    00218         ConstVectorIterator() {};
    00219     public:
    00220         typedef typename T::value_type ValueType;
    00221
    00226         ConstVectorIterator(typename T::const_iterator start, typename T::const_iterator end)
    00227             : mCurrent(start), mEnd(end)
    00228         {
    00229         }
    00230
    00235         explicit ConstVectorIterator(const T& c)
    00236             : mCurrent(c.begin()), mEnd(c.end())
    00237         {
    00238         }
    00239
    00241         bool hasMoreElements(void) const
    00242         {
    00243             return mCurrent != mEnd;
    00244         }
    00245
    00247         typename T::value_type getNext(void)
    00248         {
    00249             return *mCurrent++;
    00250         }
    00252         typename T::value_type peekNext(void) const
    00253         {
    00254             return *mCurrent;
    00255         }
    00257         typename T::const_pointer peekNextPtr(void) const
    00258         {
    00259             return &(*mCurrent);
    00260         }
    00262         void moveNext(void) const
    00263         {
    00264             ++mCurrent;
    00265         }
    00266
    00267
    00268
    00269     };
    00270
    00285     template <class T>
    00286     class ConstMapIterator
    00287     {
    00288     private:
    00289         mutable typename T::const_iterator mCurrent;
    00290         typename T::const_iterator mEnd;
    00292         ConstMapIterator() {};
    00293     public:
    00294         typedef typename T::mapped_type MappedType;
    00295         typedef typename T::key_type KeyType;
    00296
    00301         ConstMapIterator(typename T::const_iterator start, typename T::const_iterator end)
    00302             : mCurrent(start), mEnd(end)
    00303         {
    00304         }
    00305
    00310         explicit ConstMapIterator(const T& c)
    00311             : mCurrent(c.begin()), mEnd(c.end())
    00312         {
    00313         }
    00314
    00316         bool hasMoreElements(void) const
    00317         {
    00318             return mCurrent != mEnd;
    00319         }
    00320
    00322         typename T::mapped_type getNext(void)
    00323         {
    00324             return (mCurrent++)->second;
    00325         }
    00327         typename T::mapped_type peekNextValue(void) const
    00328         {
    00329             return mCurrent->second;
    00330         }
    00332         typename T::key_type peekNextKey(void) const
    00333         {
    00334             return mCurrent->first;
    00335         }
    00337         ConstMapIterator<T> & operator=( ConstMapIterator<T> &rhs )
    00338         {
    00339             mCurrent = rhs.mCurrent;
    00340             mEnd = rhs.mEnd;
    00341             return *this;
    00342         }
    00345         const typename T::mapped_type* peekNextValuePtr(void) const
    00346         {
    00347             return &(mCurrent->second);
    00348         }
    00350         void moveNext(void) const
    00351         {
    00352             ++mCurrent;
    00353         }
    00354
    00355
    00356
    00357     };
    00358 }
    00359 #endif

Copyright © 2008 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Sun Jul 26 11:32:18 2009