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- // This may look like C code, but it is really -*- C++ -*-
- // WARNING: This file is obsolete. Use ../DLList.h, if you can.
- /*
- 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>DLList_h
- #ifdef __GNUG__
- #pragma interface
- #endif
- #define _<T>DLList_h 1
-
- #include <Pix.h>
- #include "<T>.defs.h"
-
- #ifndef _<T>DLListNode_h
- #define _<T>DLListNode_h 1
-
- struct <T>DLListNode
- {
- <T>DLListNode* bk;
- <T>DLListNode* fd;
- <T> hd;
- <T>DLListNode();
- <T>DLListNode(const <T&> h,
- <T>DLListNode* p = 0,
- <T>DLListNode* n = 0);
- ~<T>DLListNode();
- };
-
- inline <T>DLListNode::<T>DLListNode() {}
-
- inline <T>DLListNode::<T>DLListNode(const <T&> h, <T>DLListNode* p,
- <T>DLListNode* n)
- :hd(h), bk(p), fd(n) {}
-
- inline <T>DLListNode::~<T>DLListNode() {}
-
- typedef <T>DLListNode* <T>DLListNodePtr;
-
- #endif
-
- class <T>DLList
- {
- friend class <T>DLListTrav;
-
- <T>DLListNode* h;
-
- public:
- <T>DLList();
- <T>DLList(const <T>DLList& a);
- ~<T>DLList();
-
- <T>DLList& operator = (const <T>DLList& a);
-
- int empty();
- int length();
-
- void clear();
-
- Pix prepend(<T&> item);
- Pix append(<T&> item);
- void join(<T>DLList&);
-
- <T>& front();
- <T> remove_front();
- void del_front();
-
- <T>& rear();
- <T> remove_rear();
- void del_rear();
-
- <T>& operator () (Pix p);
- Pix first();
- Pix last();
- void next(Pix& p);
- void prev(Pix& p);
- int owns(Pix p);
- Pix ins_after(Pix p, <T&> item);
- Pix ins_before(Pix p, <T&> item);
- void del(Pix& p, int dir = 1);
- void del_after(Pix& p);
-
- void error(const char* msg);
- int OK();
- };
-
-
- inline <T>DLList::~<T>DLList()
- {
- clear();
- }
-
- inline <T>DLList::<T>DLList()
- {
- h = 0;
- }
-
- inline int <T>DLList::empty()
- {
- return h == 0;
- }
-
-
- inline void <T>DLList::next(Pix& p)
- {
- p = (p == 0 || p == h->bk)? 0 : Pix(((<T>DLListNode*)p)->fd);
- }
-
- inline void <T>DLList::prev(Pix& p)
- {
- p = (p == 0 || p == h)? 0 : Pix(((<T>DLListNode*)p)->bk);
- }
-
- inline Pix <T>DLList::first()
- {
- return Pix(h);
- }
-
- inline Pix <T>DLList::last()
- {
- return (h == 0)? 0 : Pix(h->bk);
- }
-
- inline <T>& <T>DLList::operator () (Pix p)
- {
- if (p == 0) error("null Pix");
- return ((<T>DLListNode*)p)->hd;
- }
-
- inline <T>& <T>DLList::front()
- {
- if (h == 0) error("front: empty list");
- return h->hd;
- }
-
- inline <T>& <T>DLList::rear()
- {
- if (h == 0) error("rear: empty list");
- return h->bk->hd;
- }
-
- #endif
-