mirror of
https://port.numenaute.org/aleajactaest/khanat-opennel-code.git
synced 2024-12-18 23:18:43 +00:00
100 lines
3 KiB
C++
100 lines
3 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
|
|
// Copyright (C) 2010 Winch Gate Property Limited
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as
|
|
// published by the Free Software Foundation, either version 3 of the
|
|
// License, or (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
#ifndef NL_HISTORIC_H
|
|
#define NL_HISTORIC_H
|
|
|
|
#include "nel/misc/types_nl.h"
|
|
#include <deque>
|
|
|
|
namespace NLMISC
|
|
{
|
|
|
|
/** An historic with user defined size.
|
|
* An historic is just a fifo with constraint on size
|
|
*
|
|
* \author Nicolas Vizerie
|
|
* \author Nevrax France
|
|
* \date 2004
|
|
*/
|
|
template <class T>
|
|
class CHistoric
|
|
{
|
|
public:
|
|
CHistoric(uint maxSize = 0) : _MaxSize(maxSize) {}
|
|
// Add a value at end of historic. If historic is full then the oldest entry is removed
|
|
inline void push(const T &value);
|
|
// Pop the value at the end of jistoric
|
|
inline void pop();
|
|
// Return true is there are no values in the historics.
|
|
bool empty() const { return _Historic.empty(); }
|
|
// Get max number of entries in the historic.
|
|
uint getMaxSize() const { return _MaxSize; }
|
|
// Set number of entries in the historic. Oldest entries are removed
|
|
inline void setMaxSize(uint maxSize);
|
|
// Get current size of historic
|
|
uint getSize() const { return (uint)_Historic.size(); }
|
|
// Access to an element in history, 0 being the oldest, size - 1 being the lastest added element
|
|
const T &operator[](uint index) const { return _Historic[index]; /* let STL do out of range check */ }
|
|
// Clear historic
|
|
void clear() { _Historic.clear(); }
|
|
private:
|
|
std::deque<T> _Historic;
|
|
uint _MaxSize;
|
|
};
|
|
|
|
|
|
////////////////////
|
|
// IMPLEMENTATION //
|
|
////////////////////
|
|
|
|
// ****************************************************************************************************
|
|
template <class T>
|
|
inline void CHistoric<T>::push(const T &value)
|
|
{
|
|
nlassert(_Historic.size() <= _MaxSize);
|
|
if (_MaxSize == 0) return;
|
|
if (getSize() == _MaxSize)
|
|
{
|
|
_Historic.pop_front();
|
|
}
|
|
_Historic.push_back(value);
|
|
}
|
|
|
|
// ****************************************************************************************************
|
|
template <class T>
|
|
inline void CHistoric<T>::pop()
|
|
{
|
|
nlassert(!_Historic.empty());
|
|
_Historic.pop_back();
|
|
}
|
|
|
|
// ****************************************************************************************************
|
|
template <class T>
|
|
inline void CHistoric<T>::setMaxSize(uint maxSize)
|
|
{
|
|
if (maxSize < getSize())
|
|
{
|
|
uint toRemove = std::min(getSize() - maxSize, getSize());
|
|
_Historic.erase(_Historic.begin(), _Historic.begin() + toRemove);
|
|
}
|
|
_MaxSize = maxSize;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
#endif
|