mirror of
https://github.com/DarkflameUniverse/DarkflameServer.git
synced 2024-11-27 07:57:21 +00:00
320 lines
11 KiB
C++
320 lines
11 KiB
C++
/// \file
|
|
/// \brief \b [Internal] Map
|
|
///
|
|
/// This file is part of RakNet Copyright 2003 Kevin Jenkins.
|
|
///
|
|
/// Usage of RakNet is subject to the appropriate license agreement.
|
|
/// Creative Commons Licensees are subject to the
|
|
/// license found at
|
|
/// http://creativecommons.org/licenses/by-nc/2.5/
|
|
/// Single application licensees are subject to the license found at
|
|
/// http://www.jenkinssoftware.com/SingleApplicationLicense.html
|
|
/// Custom license users are subject to the terms therein.
|
|
/// GPL license users are subject to the GNU General Public
|
|
/// License as published by the Free
|
|
/// Software Foundation; either version 2 of the License, or (at your
|
|
/// option) any later version.
|
|
|
|
#ifndef __RAKNET_MAP_H
|
|
#define __RAKNET_MAP_H
|
|
|
|
#include "DS_OrderedList.h"
|
|
#include "Export.h"
|
|
|
|
// If I want to change this to a red-black tree, this is a good site: http://www.cs.auckland.ac.nz/software/AlgAnim/red_black.html
|
|
// This makes insertions and deletions faster. But then traversals are slow, while they are currently fast.
|
|
|
|
/// The namespace DataStructures was only added to avoid compiler errors for commonly named data structures
|
|
/// As these data structures are stand-alone, you can use them outside of RakNet for your own projects if you wish.
|
|
namespace DataStructures
|
|
{
|
|
/// The default comparison has to be first so it can be called as a default parameter.
|
|
/// It then is followed by MapNode, followed by NodeComparisonFunc
|
|
template <class key_type>
|
|
int defaultMapKeyComparison(const key_type &a, const key_type &b)
|
|
{
|
|
if (a<b) return -1; if (a==b) return 0; return 1;
|
|
}
|
|
|
|
/// \note IMPORTANT! If you use defaultMapKeyComparison then call IMPLEMENT_DEFAULT_COMPARISON or you will get an unresolved external linker error.
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&, const key_type&)=defaultMapKeyComparison<key_type> >
|
|
class RAK_DLL_EXPORT Map : public RakNet::RakMemoryOverride
|
|
{
|
|
public:
|
|
static void IMPLEMENT_DEFAULT_COMPARISON(void) {DataStructures::defaultMapKeyComparison<key_type>(key_type(),key_type());}
|
|
|
|
struct MapNode
|
|
{
|
|
MapNode() {}
|
|
MapNode(key_type _key, data_type _data) : mapNodeKey(_key), mapNodeData(_data) {}
|
|
MapNode& operator = ( const MapNode& input ) {mapNodeKey=input.mapNodeKey; mapNodeData=input.mapNodeData; return *this;}
|
|
MapNode( const MapNode & input) {mapNodeKey=input.mapNodeKey; mapNodeData=input.mapNodeData;}
|
|
key_type mapNodeKey;
|
|
data_type mapNodeData;
|
|
};
|
|
|
|
// Has to be a static because the comparison callback for DataStructures::OrderedList is a C function
|
|
static int NodeComparisonFunc(const key_type &a, const MapNode &b)
|
|
{
|
|
#ifdef _MSC_VER
|
|
#pragma warning( disable : 4127 ) // warning C4127: conditional expression is constant
|
|
#endif
|
|
return key_comparison_func(a, b.mapNodeKey);
|
|
}
|
|
|
|
Map();
|
|
~Map();
|
|
Map( const Map& original_copy );
|
|
Map& operator= ( const Map& original_copy );
|
|
|
|
data_type& Get(const key_type &key);
|
|
data_type Pop(const key_type &key);
|
|
// Add if needed
|
|
void Set(const key_type &key, const data_type &data);
|
|
// Must already exist
|
|
void SetExisting(const key_type &key, const data_type &data);
|
|
// Must add
|
|
void SetNew(const key_type &key, const data_type &data);
|
|
bool Has(const key_type &key);
|
|
bool Delete(const key_type &key);
|
|
data_type& operator[] ( const unsigned int position ) const;
|
|
key_type GetKeyAtIndex( const unsigned int position ) const;
|
|
unsigned GetIndexAtKey( const key_type &key );
|
|
void RemoveAtIndex(const unsigned index);
|
|
void Clear(void);
|
|
unsigned Size(void) const;
|
|
|
|
protected:
|
|
DataStructures::OrderedList< key_type,MapNode,Map::NodeComparisonFunc > mapNodeList;
|
|
|
|
void SaveLastSearch(const key_type &key, unsigned index);
|
|
bool HasSavedSearchResult(const key_type &key) const;
|
|
|
|
unsigned lastSearchIndex;
|
|
key_type lastSearchKey;
|
|
bool lastSearchIndexValid;
|
|
};
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
Map<key_type, data_type, key_comparison_func>::Map()
|
|
{
|
|
lastSearchIndexValid=false;
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
Map<key_type, data_type, key_comparison_func>::~Map()
|
|
{
|
|
Clear();
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
Map<key_type, data_type, key_comparison_func>::Map( const Map& original_copy )
|
|
{
|
|
mapNodeList=original_copy.mapNodeList;
|
|
lastSearchIndex=original_copy.lastSearchIndex;
|
|
lastSearchKey=original_copy.lastSearchKey;
|
|
lastSearchIndexValid=original_copy.lastSearchIndexValid;
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
Map<key_type, data_type, key_comparison_func>& Map<key_type, data_type, key_comparison_func>::operator= ( const Map& original_copy )
|
|
{
|
|
mapNodeList=original_copy.mapNodeList;
|
|
lastSearchIndex=original_copy.lastSearchIndex;
|
|
lastSearchKey=original_copy.lastSearchKey;
|
|
lastSearchIndexValid=original_copy.lastSearchIndexValid;
|
|
return *this;
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
data_type& Map<key_type, data_type, key_comparison_func>::Get(const key_type &key)
|
|
{
|
|
if (HasSavedSearchResult(key))
|
|
return mapNodeList[lastSearchIndex].mapNodeData;
|
|
|
|
bool objectExists;
|
|
unsigned index;
|
|
index=mapNodeList.GetIndexFromKey(key, &objectExists);
|
|
assert(objectExists);
|
|
SaveLastSearch(key,index);
|
|
return mapNodeList[index].mapNodeData;
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
unsigned Map<key_type, data_type, key_comparison_func>::GetIndexAtKey( const key_type &key )
|
|
{
|
|
if (HasSavedSearchResult(key))
|
|
return lastSearchIndex;
|
|
|
|
bool objectExists;
|
|
unsigned index;
|
|
index=mapNodeList.GetIndexFromKey(key, &objectExists);
|
|
if (objectExists==false)
|
|
{
|
|
assert(objectExists);
|
|
}
|
|
SaveLastSearch(key,index);
|
|
return index;
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
void Map<key_type, data_type, key_comparison_func>::RemoveAtIndex(const unsigned index)
|
|
{
|
|
mapNodeList.RemoveAtIndex(index);
|
|
lastSearchIndexValid=false;
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
data_type Map<key_type, data_type, key_comparison_func>::Pop(const key_type &key)
|
|
{
|
|
bool objectExists;
|
|
unsigned index;
|
|
if (HasSavedSearchResult(key))
|
|
index=lastSearchIndex;
|
|
else
|
|
{
|
|
index=mapNodeList.GetIndexFromKey(key, &objectExists);
|
|
assert(objectExists);
|
|
}
|
|
data_type tmp = mapNodeList[index].mapNodeData;
|
|
mapNodeList.RemoveAtIndex(index);
|
|
lastSearchIndexValid=false;
|
|
return tmp;
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
void Map<key_type, data_type, key_comparison_func>::Set(const key_type &key, const data_type &data)
|
|
{
|
|
bool objectExists;
|
|
unsigned index;
|
|
|
|
if (HasSavedSearchResult(key))
|
|
{
|
|
mapNodeList[lastSearchIndex].mapNodeData=data;
|
|
return;
|
|
}
|
|
|
|
index=mapNodeList.GetIndexFromKey(key, &objectExists);
|
|
|
|
if (objectExists)
|
|
{
|
|
SaveLastSearch(key,index);
|
|
mapNodeList[index].mapNodeData=data;
|
|
}
|
|
else
|
|
{
|
|
SaveLastSearch(key,mapNodeList.Insert(key,MapNode(key,data), true));
|
|
}
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
void Map<key_type, data_type, key_comparison_func>::SetExisting(const key_type &key, const data_type &data)
|
|
{
|
|
bool objectExists;
|
|
unsigned index;
|
|
|
|
if (HasSavedSearchResult(key))
|
|
{
|
|
index=lastSearchIndex;
|
|
}
|
|
else
|
|
{
|
|
index=mapNodeList.GetIndexFromKey(key, &objectExists);
|
|
assert(objectExists);
|
|
SaveLastSearch(key,index);
|
|
}
|
|
|
|
mapNodeList[index].mapNodeData=data;
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
void Map<key_type, data_type, key_comparison_func>::SetNew(const key_type &key, const data_type &data)
|
|
{
|
|
#ifdef _DEBUG
|
|
unsigned index;
|
|
bool objectExists;
|
|
index=mapNodeList.GetIndexFromKey(key, &objectExists);
|
|
assert(objectExists==false);
|
|
#endif
|
|
SaveLastSearch(key,mapNodeList.Insert(key,MapNode(key,data), true));
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
bool Map<key_type, data_type, key_comparison_func>::Has(const key_type &key)
|
|
{
|
|
if (HasSavedSearchResult(key))
|
|
return true;
|
|
|
|
bool objectExists;
|
|
unsigned index;
|
|
index=mapNodeList.GetIndexFromKey(key, &objectExists);
|
|
if (objectExists)
|
|
SaveLastSearch(key,index);
|
|
return objectExists;
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
bool Map<key_type, data_type, key_comparison_func>::Delete(const key_type &key)
|
|
{
|
|
if (HasSavedSearchResult(key))
|
|
{
|
|
lastSearchIndexValid=false;
|
|
mapNodeList.RemoveAtIndex(lastSearchIndex);
|
|
return true;
|
|
}
|
|
|
|
bool objectExists;
|
|
unsigned index;
|
|
index=mapNodeList.GetIndexFromKey(key, &objectExists);
|
|
if (objectExists)
|
|
{
|
|
lastSearchIndexValid=false;
|
|
mapNodeList.RemoveAtIndex(index);
|
|
return true;
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
void Map<key_type, data_type, key_comparison_func>::Clear(void)
|
|
{
|
|
lastSearchIndexValid=false;
|
|
mapNodeList.Clear();
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
data_type& Map<key_type, data_type, key_comparison_func>::operator[]( const unsigned int position ) const
|
|
{
|
|
return mapNodeList[position].mapNodeData;
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
key_type Map<key_type, data_type, key_comparison_func>::GetKeyAtIndex( const unsigned int position ) const
|
|
{
|
|
return mapNodeList[position].mapNodeKey;
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
unsigned Map<key_type, data_type, key_comparison_func>::Size(void) const
|
|
{
|
|
return mapNodeList.Size();
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
void Map<key_type, data_type, key_comparison_func>::SaveLastSearch(const key_type &key, const unsigned index)
|
|
{
|
|
lastSearchIndex=index;
|
|
lastSearchKey=key;
|
|
lastSearchIndexValid=true;
|
|
}
|
|
|
|
template <class key_type, class data_type, int (*key_comparison_func)(const key_type&,const key_type&)>
|
|
bool Map<key_type, data_type, key_comparison_func>::HasSavedSearchResult(const key_type &key) const
|
|
{
|
|
return lastSearchIndexValid && key_comparison_func(key,lastSearchKey)==0;
|
|
}
|
|
}
|
|
|
|
#endif
|