+
−// Common/MyVector.cpp
+
−
+
−#include "StdAfx.h"
+
−
+
−#include <string.h>
+
−
+
−#include "MyVector.h"
+
−
+
−CBaseRecordVector::~CBaseRecordVector() { Free(); }
+
−
+
−void CBaseRecordVector::Free()
+
−{ 
+
−  delete []((unsigned char *)_items); 
+
−  _capacity = 0;
+
−  _size = 0;
+
−  _items = 0;
+
−}
+
−
+
−void CBaseRecordVector::Clear() { DeleteFrom(0); }
+
−void CBaseRecordVector::DeleteBack() { Delete(_size - 1); }
+
−void CBaseRecordVector::DeleteFrom(int index) { Delete(index, _size - index); }
+
−
+
−void CBaseRecordVector::ReserveOnePosition()
+
−{
+
−  if (_size != _capacity)
+
−    return;
+
−  int delta;
+
−  if (_capacity > 64)
+
−    delta = _capacity / 2;
+
−  else if (_capacity > 8)
+
−    delta = 8;
+
−  else
+
−    delta = 4;
+
−  Reserve(_capacity + delta);
+
−}
+
−
+
−void CBaseRecordVector::Reserve(int newCapacity)
+
−{
+
−  if (newCapacity <= _capacity)
+
−    return;
+
−  if ((unsigned)newCapacity >= ((unsigned)1 << (sizeof(unsigned) * 8 - 1)))
+
−    throw 1052353;
+
−  size_t newSize = (size_t)(unsigned)newCapacity * _itemSize;
+
−  if (newSize / _itemSize != (size_t)(unsigned)newCapacity)
+
−    throw 1052354;
+
−  unsigned char *p = new unsigned char[newSize];
+
−  if (p == 0)
+
−    throw 1052355;
+
−  int numRecordsToMove = _capacity;
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−  memmove(p, _items, _itemSize * numRecordsToMove);
+
−  delete [](unsigned char *)_items;
+
−  _items = p;
+
−  _capacity = newCapacity;
+
−}
+
−
+
−void CBaseRecordVector::MoveItems(int destIndex, int srcIndex)
+
−{
+
−  memmove(((unsigned char *)_items) + destIndex * _itemSize, 
+
−    ((unsigned char  *)_items) + srcIndex * _itemSize, 
+
−    _itemSize * (_size - srcIndex));
+
−}
+
−
+
−void CBaseRecordVector::InsertOneItem(int index)
+
−{
+
−  ReserveOnePosition();
+
−  MoveItems(index + 1, index);
+
−  _size++;
+
−}
+
−
+
−void CBaseRecordVector::Delete(int index, int num)
+
−{
+
−  TestIndexAndCorrectNum(index, num);
+
−  if (num > 0)
+
−  {
+
−    MoveItems(index, index + num);
+
−    _size -= num;
+
−  }
+
−}