From 319f90e4546380b8e6a8599757f562fdb607ad56 Mon Sep 17 00:00:00 2001
From: "William F. Jolitz" <wjolitz@soda.berkeley.edu>
Date: Fri, 22 Jun 1990 02:37:35 -0800
Subject: [PATCH] 386BSD 0.1 development Work on file
 usr/src/lib/libg++/g++-include/gen/AVLSet.hP

Co-Authored-By: Lynne Greer Jolitz <ljolitz@cardio.ucsf.edu>
Synthesized-from: 386BSD-0.1
---
 usr/src/lib/libg++/g++-include/gen/AVLSet.hP | 167 +++++++++++++++++++
 1 file changed, 167 insertions(+)
 create mode 100644 usr/src/lib/libg++/g++-include/gen/AVLSet.hP

diff --git a/usr/src/lib/libg++/g++-include/gen/AVLSet.hP b/usr/src/lib/libg++/g++-include/gen/AVLSet.hP
new file mode 100644
index 0000000000..b9adfb4e74
--- /dev/null
+++ b/usr/src/lib/libg++/g++-include/gen/AVLSet.hP
@@ -0,0 +1,167 @@
+// 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 GNU CC.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY.  No author or distributor
+accepts responsibility to anyone for the consequences of using it
+or for whether it serves any particular purpose or works at all,
+unless he says so in writing.  Refer to the GNU CC General Public
+License for full details.
+
+Everyone is granted permission to copy, modify and redistribute
+GNU CC, but only under the conditions described in the
+GNU CC General Public License.   A copy of this license is
+supposed to have been given to you along with GNU CC so you
+can know your rights and responsibilities.  It should be in a
+file named COPYING.  Among other things, the copyright notice
+and this notice must be preserved on all copies.  
+*/
+
+
+#ifndef _<T>AVL_h
+#ifdef __GNUG__
+#pragma once
+#pragma interface
+#endif
+#define _<T>AVL_h 1
+
+#include "<T>.Set.h"
+
+struct <T>AVLNode
+{
+  <T>AVLNode*         lt;
+  <T>AVLNode*         rt;
+  <T>                 item;
+  char                stat;
+                      <T>AVLNode(<T&> h, <T>AVLNode* l=0, <T>AVLNode* r=0);
+                      ~<T>AVLNode();
+};
+
+#if defined(__OPTIMIZE__) || defined(USE_LIBGXX_INLINES)
+
+inline <T>AVLNode::<T>AVLNode(<T&> h, <T>AVLNode* l, <T>AVLNode* r)
+:item(h), lt(l), rt(r), stat(0) {}
+
+inline <T>AVLNode::~<T>AVLNode() {}
+
+#endif
+
+typedef <T>AVLNode* <T>AVLNodePtr;
+
+
+class <T>AVLSet : public <T>Set
+{
+protected:
+  <T>AVLNode*   root;
+
+                <T>AVLSet(<T>AVLNode* p, int l);
+
+  <T>AVLNode*   leftmost();
+  <T>AVLNode*   rightmost();
+  <T>AVLNode*   pred(<T>AVLNode* t);
+  <T>AVLNode*   succ(<T>AVLNode* t);
+  void          _kill(<T>AVLNode* t);
+  void          _add(<T>AVLNode*& t);
+  void          _del(<T>AVLNode* p, <T>AVLNode*& t);
+
+public:
+                <T>AVLSet();
+                <T>AVLSet(<T>AVLSet& a);
+                ~<T>AVLSet();
+
+  Pix           add(<T&> item);
+  void          del(<T&> item);
+  int           contains(<T&> item);
+
+  void          clear();
+
+  Pix           first();
+  void          next(Pix& i);
+  <T>&          operator () (Pix i);
+  int           owns(Pix i);
+  Pix           seek(<T&> item);
+
+  Pix           last();
+  void          prev(Pix& i);
+
+  void          operator |= (<T>AVLSet& b);
+  void          operator -= (<T>AVLSet& b);
+  void          operator &= (<T>AVLSet& b);
+
+  int           operator == (<T>AVLSet& b);
+  int           operator != (<T>AVLSet& b);
+  int           operator <= (<T>AVLSet& b); 
+
+  int           OK();
+};
+
+#if defined(__OPTIMIZE__) || defined(USE_LIBGXX_INLINES)
+
+inline <T>AVLSet::~<T>AVLSet()
+{
+  _kill(root);
+}
+
+inline <T>AVLSet::<T>AVLSet()
+{
+  root = 0;
+  count = 0;
+}
+
+inline <T>AVLSet::<T>AVLSet(<T>AVLNode* p, int l)
+{
+  root = p;
+  count = l;
+}
+
+inline int <T>AVLSet::operator != (<T>AVLSet& b)
+{
+  return ! ((*this) == b);
+}
+
+inline Pix <T>AVLSet::first()
+{
+  return Pix(leftmost());
+}
+
+inline Pix <T>AVLSet::last()
+{
+  return Pix(rightmost());
+}
+
+inline void <T>AVLSet::next(Pix& i)
+{
+  if (i != 0) i = Pix(succ((<T>AVLNode*)i));
+}
+
+inline void <T>AVLSet::prev(Pix& i)
+{
+  if (i != 0) i = Pix(pred((<T>AVLNode*)i));
+}
+
+inline <T>& <T>AVLSet::operator () (Pix i)
+{
+  if (i == 0) error("null Pix");
+  return ((<T>AVLNode*)i)->item;
+}
+
+inline void <T>AVLSet::clear()
+{
+  _kill(root);
+  count = 0;
+  root = 0;
+}
+
+inline int <T>AVLSet::contains(<T&> key)
+{
+  return seek(key) != 0;
+}
+
+
+
+#endif
+#endif
-- 
2.20.1