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/****************************************************************************
* Copyright (C) 2009-2015 EPAM Systems
*
* This file is part of Indigo toolkit.
*
* This file may be distributed and/or modified under the terms of the
* GNU General Public License version 3 as published by the Free Software
* Foundation and appearing in the file LICENSE.GPL included in the
* packaging of this file.
*
* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
***************************************************************************/
#ifndef __reusable_obj_array__
#define __reusable_obj_array__
#include "base_cpp/array.h"
namespace indigo {
template <typename T> class ReusableObjArray
{
public:
explicit ReusableObjArray ()
{
_count = 0;
}
~ReusableObjArray ()
{
for (int i = 0; i < _array.size(); i++) {
_array[i].~T();
}
}
const T & operator[] (int index) const
{
return _array[index];
}
T & operator[] (int index)
{
return _array[index];
}
const T & at (int index) const
{
return (*this)[index];
}
T & at (int index)
{
return (*this)[index];
}
int size (void) const { return _count; }
void resize (const int newSize)
{
if (newSize <= _count) {
_count = newSize;
} else {
_array.reserve(newSize);
while (_count < newSize) {
push();
}
}
}
T & push ()
{
T *addr;
if (_count == _array.size()) {
addr = &_array.push();
new (addr) T();
} else {
addr = &_array[_count];
}
_count++;
addr->clear();
return *addr;
}
void pop ()
{
_count--;
}
T& top ()
{
return _array[_count - 1];
}
void clear ()
{
_count = 0;
}
void reserve (int to_reserve)
{
_array.reserve(to_reserve);
}
protected:
Array<T> _array;
int _count;
private:
ReusableObjArray (const ReusableObjArray &); // no implicit copy
};
}
#endif
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