|
Main Page Class Hierarchy Alphabetical List Compound List File List Compound Members
|
00001 /******************************************************************************** 00002 * * 00003 * A u t o m a t i c P o i n t e r * 00004 * * 00005 ********************************************************************************* 00006 * Copyright (C) 2007,2010 by Jeroen van der Zijp. All Rights Reserved. * 00007 ********************************************************************************* 00008 * This library is free software; you can redistribute it and/or modify * 00009 * it under the terms of the GNU Lesser General Public License as published by * 00010 * the Free Software Foundation; either version 3 of the License, or * 00011 * (at your option) any later version. * 00012 * * 00013 * This library is distributed in the hope that it will be useful, * 00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 00016 * GNU Lesser General Public License for more details. * 00017 * * 00018 * You should have received a copy of the GNU Lesser General Public License * 00019 * along with this program. If not, see <http://www.gnu.org/licenses/> * 00020 ********************************************************************************/ 00021 #ifndef FXAUTOPTR_H 00022 #define FXAUTOPTR_H 00023 00024 namespace FX { 00025 00026 00027 /// Automatic pointer 00028 template<class EType> class FXAutoPtr { 00029 private: 00030 EType* ptr; 00031 public: 00032 00033 /// Construct from optional pointer 00034 FXAutoPtr(EType* src=NULL):ptr(src){ } 00035 00036 /// Construct from another automatic pointer 00037 FXAutoPtr(FXAutoPtr& src):ptr(src.release()){ } 00038 00039 /// Construct from another automatic pointer of compatible type 00040 template<class T> FXAutoPtr(FXAutoPtr<T>& src):ptr(src.release()){ } 00041 00042 /// Assign from pointer 00043 FXAutoPtr& operator=(EType *src){ ptr=src; return *this; } 00044 00045 /// Assign from an another automatic pointer 00046 FXAutoPtr& operator=(FXAutoPtr& src){ return reset(src.release()); } 00047 00048 /// Assign from an automatic pointer with compatible type 00049 template<class T> FXAutoPtr& operator=(FXAutoPtr<T>& src){ return reset(src.release()); } 00050 00051 /// Convert to true/false 00052 operator FXbool() const { return !!ptr; } 00053 00054 /// Conversion operators 00055 operator EType*() const { return ptr; } 00056 00057 /// Dereference operator 00058 EType& operator*() const { return *ptr; } 00059 00060 /// Follow pointer operator 00061 EType* operator->() const { return ptr; } 00062 00063 /// Release hold on the pointer 00064 EType* release(){ EType* tmp=ptr; ptr=NULL; return tmp; } 00065 00066 /// Delete old object, replace by new, if any 00067 FXAutoPtr& reset(EType* p=NULL){ if(p!=ptr){ delete ptr; ptr=p; } return *this; } 00068 00069 /// Destruction deletes pointer 00070 ~FXAutoPtr(){ delete ptr; } 00071 }; 00072 00073 00074 /// Serialize of automatic pointer 00075 template <class EType> FXStream& operator<<(FXStream& store,const FXAutoPtr<EType>& obj){ 00076 EType *temp=obj; store << temp; return store; 00077 } 00078 00079 00080 /// Deserialize of automatic pointer 00081 template <class EType> FXStream& operator>>(FXStream& store,FXAutoPtr<EType>& obj){ 00082 EType *temp; store >> temp; obj=temp; return store; 00083 } 00084 00085 } 00086 00087 #endif 00088
|
Copyright © 1997-2010 Jeroen van der Zijp
|