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// 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 _<T><C>SplayMap_h
#ifdef __GNUG__
#pragma interface
#endif
#define _<T><C>SplayMap_h 1
#include "<T>.<C>.Map.h"
#ifndef _<T><C>SplayNode
#define _<T><C>SplayNode 1
struct <T><C>SplayNode
{
<T><C>SplayNode* lt;
<T><C>SplayNode* rt;
<T><C>SplayNode* par;
<T> item;
<C> cont;
<T><C>SplayNode(<T&> h, <C&> c,
<T><C>SplayNode* l=0,
<T><C>SplayNode* r=0);
~<T><C>SplayNode();
};
inline <T><C>SplayNode::<T><C>SplayNode(<T&> h, <C&> c,
<T><C>SplayNode* l,
<T><C>SplayNode* r)
:item(h), cont(c), lt(l), rt(r), par(0) {}
inline <T><C>SplayNode::~<T><C>SplayNode() {}
typedef <T><C>SplayNode* <T><C>SplayNodePtr;
#endif
class <T><C>SplayMap : public <T><C>Map
{
protected:
<T><C>SplayNode* root;
<T><C>SplayNode* leftmost();
<T><C>SplayNode* rightmost();
<T><C>SplayNode* pred(<T><C>SplayNode* t);
<T><C>SplayNode* succ(<T><C>SplayNode* t);
void _kill(<T><C>SplayNode* t);
<T><C>SplayNode* _copy(<T><C>SplayNode* t);
public:
<T><C>SplayMap(<C&> dflt);
<T><C>SplayMap(<T><C>SplayMap& a);
~<T><C>SplayMap();
<C>& operator [] (<T&> key);
void del(<T&> key);
Pix first();
void next(Pix& i);
<T>& key(Pix i);
<C>& contents(Pix i);
Pix seek(<T&> key);
int contains(<T&> key);
void clear();
Pix last();
void prev(Pix& i);
int OK();
};
inline <T><C>SplayMap::~<T><C>SplayMap()
{
_kill(root);
}
inline <T><C>SplayMap::<T><C>SplayMap(<C&> dflt) :<T><C>Map(dflt)
{
root = 0;
}
inline <T><C>SplayMap::<T><C>SplayMap(<T><C>SplayMap& b) :<T><C>Map(b.def)
{
count = b.count;
root = _copy(b.root);
}
inline Pix <T><C>SplayMap::first()
{
return Pix(leftmost());
}
inline Pix <T><C>SplayMap::last()
{
return Pix(rightmost());
}
inline void <T><C>SplayMap::next(Pix& i)
{
if (i != 0) i = Pix(succ((<T><C>SplayNode*)i));
}
inline void <T><C>SplayMap::prev(Pix& i)
{
if (i != 0) i = Pix(pred((<T><C>SplayNode*)i));
}
inline <T>& <T><C>SplayMap::key (Pix i)
{
if (i == 0) error("null Pix");
return ((<T><C>SplayNode*)i)->item;
}
inline <C>& <T><C>SplayMap::contents (Pix i)
{
if (i == 0) error("null Pix");
return ((<T><C>SplayNode*)i)->cont;
}
inline void <T><C>SplayMap::clear()
{
_kill(root);
count = 0;
root = 0;
}
inline int <T><C>SplayMap::contains(<T&> key)
{
return seek(key) != 0;
}
#endif
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