csutil/scopedpointer.h Source File (Crystal Space 2.0 Public API Reference)

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csutil/scopedpointer.h
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    00001 /*
    00002   Copyright (C) 2007-2011 by Frank Richter
    00003
    00004   This library is free software; you can redistribute it and/or
    00005   modify it under the terms of the GNU Library General Public
    00006   License as published by the Free Software Foundation; either
    00007   version 2 of the License, or (at your option) any later version.
    00008
    00009   This library is distributed in the hope that it will be useful,
    00010   but WITHOUT ANY WARRANTY; without even the implied warranty of
    00011   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00012   Library General Public License for more details.
    00013
    00014   You should have received a copy of the GNU Library General Public
    00015   License along with this library; if not, write to the Free
    00016   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    00017 */
    00018 #ifndef __CSUTIL_SCOPEDPOINTER_H__
    00019 #define __CSUTIL_SCOPEDPOINTER_H__
    00020
    00025 #include "csutil/noncopyable.h"
    00026
    00027 namespace CS
    00028 {
    00029 namespace Utility
    00030 {
    00031
    00036   template<class T>
    00037   class ScopedPointer : private NonCopyable
    00038   {
    00039     T* ptr;
    00040   public:
    00045     ScopedPointer (T* ptr = nullptr) : ptr (ptr) {}
    00047     ~ScopedPointer() { delete ptr; }
    00048
    00053     void Reset (T* ptr = nullptr)
    00054     {
    00055       delete this->ptr;
    00056       this->ptr = ptr;
    00057     }
    00059     void Invalidate() { Reset(); }
    00061     bool IsValid() const { return ptr != (T*)nullptr; }
    00062
    00064     T* operator -> () const
    00065     { return ptr; }
    00066
    00068     operator T* () const
    00069     { return ptr; }
    00070
    00072     T& operator* () const
    00073     { return *ptr; }
    00074
    00075   };
    00076
    00077 } // namespace Utility
    00078 } // namespace CS
    00079
    00080 #endif // __CSUTIL_SCOPEDPOINTER_H__