Category : OS/2 Files
Archive   : GPPDEV8F.ZIP
Filename : BSTSET.HP

 
Output of file : BSTSET.HP contained in archive : GPPDEV8F.ZIP
// This may look like C code, but it is really -*- C++ -*-
/*
Copyright (C) 1988 Free Software Foundation
written by Doug Lea ([email protected])

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 _BSTSet_h
#ifdef __GNUG__
#pragma interface
#endif
#define _BSTSet_h 1

#include ".Set.h"

#ifndef _BSTNode
#define _BSTNode 1

struct BSTNode
{
BSTNode* lt;
BSTNode* rt;
BSTNode* par;
item;
BSTNode( h, BSTNode* l=0, BSTNode* r=0,
BSTNode* p = 0);
~BSTNode();
};

inline BSTNode::BSTNode( h, BSTNode* l, BSTNode* r,
BSTNode* p)
:item(h), lt(l), rt(r), par(p) {}

inline BSTNode::~BSTNode() {}

typedef BSTNode* BSTNodePtr;

#endif

class BSTSet : public Set
{
protected:
BSTNode* root;

BSTNode* leftmost();
BSTNode* rightmost();
BSTNode* pred(BSTNode* t);
BSTNode* succ(BSTNode* t);
void _kill(BSTNode* t);
BSTNode* _copy(BSTNode* t);

public:
BSTSet();
BSTSet(BSTSet& a);
~BSTSet();

Pix add( item);
void del( item);
int contains( item);

void clear();

Pix first();
void next(Pix& i);
& operator () (Pix i);
Pix seek( item);

Pix last();
void prev(Pix& i);

int operator == (BSTSet& b);
int operator != (BSTSet& b);
int operator <= (BSTSet& b);

void balance();
int OK();
};

inline BSTSet::~BSTSet()
{
_kill(root);
}

inline BSTSet::BSTSet()
{
root = 0;
count = 0;
}


inline BSTSet::BSTSet(BSTSet& a)
{
count = a.count;
root = _copy(a.root);
}

inline int BSTSet::operator != (BSTSet& b)
{
return ! (*this == b);
}

inline Pix BSTSet::first()
{
return Pix(leftmost());
}

inline Pix BSTSet::last()
{
return Pix(rightmost());
}

inline void BSTSet::next(Pix& i)
{
if (i != 0) i = Pix(succ((BSTNode*)i));
}

inline void BSTSet::prev(Pix& i)
{
if (i != 0) i = Pix(pred((BSTNode*)i));
}

inline & BSTSet::operator () (Pix i)
{
if (i == 0) error("null Pix");
return ((BSTNode*)i)->item;
}

inline void BSTSet::clear()
{
_kill(root);
count = 0;
root = 0;
}

inline int BSTSet::contains( key)
{
return seek(key) != 0;
}

#endif


  3 Responses to “Category : OS/2 Files
Archive   : GPPDEV8F.ZIP
Filename : BSTSET.HP

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/