80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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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 Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) 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 Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef NL_CLASS_ID_H
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#define NL_CLASS_ID_H
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#include "types_nl.h"
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namespace NLMISC
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{
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// ***************************************************************************
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/**
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* A unique id to specify Object by a uint64.
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* The Deriver should use a Max-like Id generator, to identify his own object.
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* \author Lionel Berenguier
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* \author Nevrax France
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* \date 2000
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*/
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class CClassId
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{
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uint64 Uid;
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public:
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static const CClassId Null;
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public:
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CClassId() {Uid=0;}
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CClassId(uint32 a, uint32 b) {Uid= ((uint64)a<<32) | b;}
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CClassId(uint64 a) {Uid=a;}
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bool operator==(const CClassId &o) const {return Uid==o.Uid;}
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bool operator!=(const CClassId &o) const {return Uid!=o.Uid;}
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bool operator<=(const CClassId &o) const {return Uid<=o.Uid;}
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bool operator>=(const CClassId &o) const {return Uid>=o.Uid;}
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bool operator<(const CClassId &o) const {return Uid<o.Uid;}
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bool operator>(const CClassId &o) const {return Uid>o.Uid;}
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//CClassId& operator=(const CClassId &o) { Uid = o.Uid; return *this;}
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operator uint64() const {return Uid;}
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};
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/**
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* Class to be used as a hash traits for a hash_map accessed by CClassId
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* Ex: CHashMap< CClassId, CMyData, CClassIdHashMapTraits> _MyHashMap;
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*/
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class CClassIdHashMapTraits
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{
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public:
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enum { bucket_size = 4, min_buckets = 8 };
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inline size_t operator() ( const CClassId& classId ) const
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{
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return ((((uint64)classId >> 32)|0xFFFFFFFF) ^ (((uint64)classId|0xFFFFFFFF) & 0xFFFFFFFF));
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}
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bool operator() (const CClassId &classId1, const CClassId &classId2) const
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{
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return classId1 < classId2;
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}
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};
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}
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#endif // NL_CLASS_ID_H
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/* End of class_id.h */
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