108 lines
No EOL
2.7 KiB
C++
108 lines
No EOL
2.7 KiB
C++
/*
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* Copyright (C) 2003-2006 Gabest
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* http://www.gabest.org
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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 General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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*/
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#pragma once
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namespace ssf
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{
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// simple array class for simple types without constructors,
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// and it doesn't free its reserves on SetCount(0)
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template<class T>
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class Array
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{
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T* m_pData;
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size_t m_nSize;
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size_t m_nMaxSize;
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size_t m_nGrowBy;
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public:
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Array() {m_pData = NULL; m_nSize = m_nMaxSize = 0; m_nGrowBy = 4096;}
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virtual ~Array() {if(m_pData) _aligned_free(m_pData);}
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void SetCount(size_t nSize, size_t nGrowBy = 0)
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{
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if(nGrowBy > 0)
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{
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m_nGrowBy = nGrowBy;
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}
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if(nSize > m_nMaxSize)
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{
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m_nMaxSize = nSize + max(m_nGrowBy, m_nSize);
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size_t nBytes = m_nMaxSize * sizeof(T);
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m_pData = m_pData ? (T*)_aligned_realloc(m_pData, nBytes, 16) : (T*)_aligned_malloc(nBytes, 16);
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}
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m_nSize = nSize;
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}
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size_t GetCount() const {return m_nSize;}
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void RemoveAll() {m_nSize = 0;}
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bool IsEmpty() const {return m_nSize == 0;}
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T* GetData() {return m_pData;}
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void Add(const T& t)
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{
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size_t nPos = m_nSize;
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SetCount(m_nSize+1);
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m_pData[nPos] = t;
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}
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void Append(const Array& a, size_t nGrowBy = 0)
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{
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Append(a.m_pData, a.m_nSize, nGrowBy);
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}
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void Append(const T* ptr, size_t nSize, size_t nGrowBy = 0)
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{
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if(!nSize) return;
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size_t nOldSize = m_nSize;
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SetCount(nOldSize + nSize);
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memcpy(m_pData + nOldSize, ptr, nSize * sizeof(T));
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}
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const T& operator [] (size_t i) const {return m_pData[i];}
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T& operator [] (size_t i) {return m_pData[i];}
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void Copy(const Array& v)
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{
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SetCount(v.GetCount());
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memcpy(m_pData, v.m_pData, m_nSize * sizeof(T));
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}
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void Move(Array& v)
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{
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Swap(v);
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v.SetCount(0);
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}
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void Swap(Array& v)
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{
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T* pData = m_pData; m_pData = v.m_pData; v.m_pData = pData;
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size_t nSize = m_nSize; m_nSize = v.m_nSize; v.m_nSize = nSize;
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size_t nMaxSize = m_nMaxSize; m_nMaxSize = v.m_nMaxSize; v.m_nMaxSize = nMaxSize;
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size_t nGrowBy = m_nGrowBy; m_nGrowBy = v.m_nGrowBy; v.m_nGrowBy = nGrowBy;
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}
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};
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} |