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Diffstat (limited to 'soltools/ldump/hashtbl.hxx')
-rw-r--r-- | soltools/ldump/hashtbl.hxx | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/soltools/ldump/hashtbl.hxx b/soltools/ldump/hashtbl.hxx new file mode 100644 index 000000000000..b3aa621dcb21 --- /dev/null +++ b/soltools/ldump/hashtbl.hxx @@ -0,0 +1,113 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org 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 Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#ifndef _HASHTBL_HXX +#define _HASHTBL_HXX + +// ADT hash table +// +// Invariante: +// 1. m_lElem < m_lSize +// 2. die Elemente in m_Array wurden double-hashed erzeugt +// +class HashItem; + +class HashTable +{ + unsigned long m_lSize; + unsigned long m_lElem; + HashItem *m_pData; + double m_dMaxLoadFactor; + double m_dGrowFactor; + bool m_bOwner; + + unsigned long Hash(const char *cKey) const; + unsigned long DHash(const char *cKey , unsigned long lHash) const; + unsigned long Probe(unsigned long lPos) const; + + HashItem* FindPos(const char *cKey) const; + void SmartGrow(); + double CalcLoadFactor() const; + +protected: + friend class HashTableIterator; + + virtual void OnDeleteObject(void* pObject); + + void* GetObjectAt(unsigned long lPos) const; + +// Default-Werte +public: + static double m_defMaxLoadFactor; + static double m_defDefGrowFactor; + +public: + HashTable + ( + unsigned long lSize, + bool bOwner, + double dMaxLoadFactor = HashTable::m_defMaxLoadFactor /* 0.8 */, + double dGrowFactor = HashTable::m_defDefGrowFactor /* 2.0 */ + ); + + virtual ~HashTable(); + + bool IsFull() const; + unsigned long GetSize() const { return m_lSize; } + + void* Find (const char *cKey ) const; + bool Insert (const char *cKey , void* pObject); + void* Delete (const char *cKey); +}; + +// ADT hash table iterator +// +// Invariante: 0 <= m_lAt < m_aTable.GetCount() +// +class HashTableIterator +{ + unsigned long m_lAt; + HashTable const& m_aTable; + + void operator =(HashTableIterator &); // not defined + + void* FindValidObject(bool bForward); + +protected: + void* GetFirst(); // Interation _ohne_ Sortierung + void* GetNext(); + void* GetLast(); + void* GetPrev(); + +public: + HashTableIterator(HashTable const&); +}; + +#endif // _HASHTBL_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |