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- /*****************************************************************************
- * $Id: String_XEntry_AVLMap.h,v 1.1.1.1 1993/02/04 15:18:48 ak Exp $
- *****************************************************************************
- * $Log: String_XEntry_AVLMap.h,v $
- * Revision 1.1.1.1 1993/02/04 15:18:48 ak
- * Please Edit this file to contain the RCS log information
- * to be associated with this file (please remove these lines)
- *
- * Revision 1.1 1993/02/04 15:18:45 ak
- * Initial revision
- *
- *****************************************************************************/
-
- // This may look like C code, but it is really -*- C++ -*-
- /*
- Copyright (C) 1988 Free Software Foundation
- written by Doug Lea (dl@rocky.oswego.edu)
-
- This file is part of the GNU C++ Library. This library is free
- software; you can redistribute it and/or modify it under the terms of
- the GNU Library General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at your
- option) any later version. This library 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 Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-
- #ifndef _StringXEntryAVLMap_h
- #ifdef __GNUG__
- #pragma interface
- #endif
- #define _StringXEntryAVLMap_h 1
-
- #include "String_XEntry_Map.h"
-
- struct StringXEntryAVLNode
- {
- StringXEntryAVLNode* lt;
- StringXEntryAVLNode* rt;
- String item;
- XEntry cont;
- char stat;
- StringXEntryAVLNode(String& h, XEntry& c,
- StringXEntryAVLNode* l=0, StringXEntryAVLNode* r=0);
- ~StringXEntryAVLNode();
- };
-
- inline StringXEntryAVLNode::StringXEntryAVLNode(String& h, XEntry& c,
- StringXEntryAVLNode* l, StringXEntryAVLNode* r)
- :item(h), cont(c), lt(l), rt(r), stat(0) {}
-
- inline StringXEntryAVLNode::~StringXEntryAVLNode() {}
-
- typedef StringXEntryAVLNode* StringXEntryAVLNodePtr;
-
-
- class StringXEntryAVLMap : public StringXEntryMap
- {
- protected:
- StringXEntryAVLNode* root;
-
- StringXEntryAVLNode* leftmost();
- StringXEntryAVLNode* rightmost();
- StringXEntryAVLNode* pred(StringXEntryAVLNode* t);
- StringXEntryAVLNode* succ(StringXEntryAVLNode* t);
- void _kill(StringXEntryAVLNode* t);
- void _add(StringXEntryAVLNode*& t);
- void _del(StringXEntryAVLNode* p, StringXEntryAVLNode*& t);
-
- public:
- StringXEntryAVLMap(XEntry& dflt);
- StringXEntryAVLMap(StringXEntryAVLMap& a);
- ~StringXEntryAVLMap();
-
- XEntry& operator [] (String& key);
-
- void del(String& key);
-
- Pix first();
- void next(Pix& i);
- String& key(Pix i);
- XEntry& contents(Pix i);
-
- Pix seek(String& key);
- int contains(String& key);
-
- void clear();
-
- Pix last();
- void prev(Pix& i);
-
- int OK();
- };
-
- inline StringXEntryAVLMap::~StringXEntryAVLMap()
- {
- _kill(root);
- }
-
- inline StringXEntryAVLMap::StringXEntryAVLMap(XEntry& dflt) :StringXEntryMap(dflt)
- {
- root = 0;
- }
-
- inline Pix StringXEntryAVLMap::first()
- {
- return Pix(leftmost());
- }
-
- inline Pix StringXEntryAVLMap::last()
- {
- return Pix(rightmost());
- }
-
- inline void StringXEntryAVLMap::next(Pix& i)
- {
- if (i != 0) i = Pix(succ((StringXEntryAVLNode*)i));
- }
-
- inline void StringXEntryAVLMap::prev(Pix& i)
- {
- if (i != 0) i = Pix(pred((StringXEntryAVLNode*)i));
- }
-
- inline String& StringXEntryAVLMap::key(Pix i)
- {
- if (i == 0) error("null Pix");
- return ((StringXEntryAVLNode*)i)->item;
- }
-
- inline XEntry& StringXEntryAVLMap::contents(Pix i)
- {
- if (i == 0) error("null Pix");
- return ((StringXEntryAVLNode*)i)->cont;
- }
-
- inline void StringXEntryAVLMap::clear()
- {
- _kill(root);
- count = 0;
- root = 0;
- }
-
- inline int StringXEntryAVLMap::contains(String& key)
- {
- return seek(key) != 0;
- }
-
- #endif
-