OpenNI 1.5.7
XnStackT.h
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00001 /*****************************************************************************
00002 *                                                                            *
00003 *  OpenNI 1.x Alpha                                                          *
00004 *  Copyright (C) 2012 PrimeSense Ltd.                                        *
00005 *                                                                            *
00006 *  This file is part of OpenNI.                                              *
00007 *                                                                            *
00008 *  Licensed under the Apache License, Version 2.0 (the "License");           *
00009 *  you may not use this file except in compliance with the License.          *
00010 *  You may obtain a copy of the License at                                   *
00011 *                                                                            *
00012 *      http://www.apache.org/licenses/LICENSE-2.0                            *
00013 *                                                                            *
00014 *  Unless required by applicable law or agreed to in writing, software       *
00015 *  distributed under the License is distributed on an "AS IS" BASIS,         *
00016 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  *
00017 *  See the License for the specific language governing permissions and       *
00018 *  limitations under the License.                                            *
00019 *                                                                            *
00020 *****************************************************************************/
00021 #ifndef _XN_STACK_T_H_
00022 #define _XN_STACK_T_H_ 
00023 
00024 //---------------------------------------------------------------------------
00025 // Includes
00026 //---------------------------------------------------------------------------
00027 #include "XnListT.h"
00028 
00029 //---------------------------------------------------------------------------
00030 // Code
00031 //---------------------------------------------------------------------------
00032 template<class T, class TAlloc = XnLinkedNodeDefaultAllocatorT<T> >
00033 class XnStackT : protected XnListT<T, TAlloc>
00034 {
00035 public:
00036     typedef XnListT<T, TAlloc> Base;
00037 
00038     typedef typename Base::ConstIterator ConstIterator;
00039 
00040     XnStackT() : Base() {}
00041 
00042     XnStackT(const XnStackT& other) : Base() 
00043     {
00044         *this = other;
00045     }
00046 
00047     XnStackT& operator=(const XnStackT& other)
00048     {
00049         Base::operator=(other);
00050         // no other members
00051         return *this;
00052     }
00053 
00054     ~XnStackT() {}
00055 
00056     XnBool IsEmpty() const { return Base::IsEmpty(); }
00057 
00058     XnStatus Push(T const& value) { return Base::AddFirst(value); }
00059 
00060     XnStatus Pop(T& value)
00061     {
00062         ConstIterator it = Begin();
00063         if (it == End())
00064         {
00065             return XN_STATUS_IS_EMPTY;
00066         }
00067         value = *it;
00068         return Base::Remove(it);
00069     }
00070 
00071     T const& Top() const { return *Begin(); }
00072     T& Top() { return *Begin(); }
00073 
00074     ConstIterator Begin() const { return Base::Begin(); }
00075     ConstIterator End() const { return Base::End(); }
00076 };
00077 
00078 #endif // _XN_STACK_T_H_