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Diffstat (limited to 'libg++/libg++/src/gen/SplaySet.hP')
-rw-r--r-- | libg++/libg++/src/gen/SplaySet.hP | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/libg++/libg++/src/gen/SplaySet.hP b/libg++/libg++/src/gen/SplaySet.hP new file mode 100644 index 0000000..e693583 --- /dev/null +++ b/libg++/libg++/src/gen/SplaySet.hP @@ -0,0 +1,145 @@ +// 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +*/ + + +#ifndef _<T>SplaySet_h +#ifdef __GNUG__ +#pragma interface +#endif +#define _<T>SplaySet_h 1 + +#include "<T>.Set.h" +#include "<T>.SplayNode.h" + +class <T>SplaySet : public <T>Set +{ +protected: + <T>SplayNode* root; + + <T>SplayNode* leftmost(); + <T>SplayNode* rightmost(); + <T>SplayNode* pred(<T>SplayNode* t); + <T>SplayNode* succ(<T>SplayNode* t); + void _kill(<T>SplayNode* t); + <T>SplayNode* _copy(<T>SplayNode* t); + +public: + <T>SplaySet(); + <T>SplaySet(<T>SplaySet& a); + inline ~<T>SplaySet(); + + Pix add(<T&> item); + void del(<T&> item); + inline int contains(<T&> item); + + inline void clear(); + + inline Pix first(); + inline void next(Pix& i); + inline <T>& operator () (Pix i); + Pix seek(<T&> item); + + Pix last(); + void prev(Pix& i); + + <T>SplaySet& operator = (const <T>SplaySet& b); + void operator |= (<T>SplaySet& b); + void operator -= (<T>SplaySet& b); + void operator &= (<T>SplaySet& b); + + int operator == (<T>SplaySet& b); + int operator != (<T>SplaySet& b); + int operator <= (<T>SplaySet& b); + + int OK(); +}; + + +inline <T>SplaySet::~<T>SplaySet() +{ + _kill(root); +} + +inline <T>SplaySet::<T>SplaySet() +{ + root = 0; + count = 0; +} + +inline <T>SplaySet::<T>SplaySet(<T>SplaySet& b) +{ + count = b.count; + root = _copy(b.root); +} + + +inline <T>SplaySet& <T>SplaySet::operator = (const <T>SplaySet& b) +{ + if (this != &b) + { + _kill (root); + count = b.count; + root = _copy (b.root); + } + return *this; +} + +inline int <T>SplaySet::operator != (<T>SplaySet& b) +{ + return ! (*this == b); +} + +inline Pix <T>SplaySet::first() +{ + return Pix(leftmost()); +} + +inline Pix <T>SplaySet::last() +{ + return Pix(rightmost()); +} + +inline void <T>SplaySet::next(Pix& i) +{ + if (i != 0) i = Pix(succ((<T>SplayNode*)i)); +} + +inline void <T>SplaySet::prev(Pix& i) +{ + if (i != 0) i = Pix(pred((<T>SplayNode*)i)); +} + +inline <T>& <T>SplaySet::operator () (Pix i) +{ + if (i == 0) error("null Pix"); + return ((<T>SplayNode*)i)->item; +} + +inline void <T>SplaySet::clear() +{ + _kill(root); + count = 0; + root = 0; +} + +inline int <T>SplaySet::contains(<T&> key) +{ + return seek(key) != 0; +} + +#endif |