Line data Source code
1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include "ring.hxx"
21 :
22 705718 : Ring::Ring( Ring *pObj )
23 : {
24 705718 : if( !pObj )
25 : {
26 705297 : pNext = this, pPrev = this;
27 : }
28 : else
29 : {
30 421 : pNext = pObj;
31 421 : pPrev = pObj->pPrev;
32 421 : pObj->pPrev = this;
33 421 : pPrev->pNext = this;
34 : }
35 705718 : }
36 :
37 707428 : Ring::~Ring()
38 : {
39 707428 : pNext->pPrev = pPrev;
40 707428 : pPrev->pNext = pNext;
41 707428 : }
42 :
43 105 : void Ring::MoveTo(Ring *pDestRing)
44 : {
45 : // delete from "old"
46 105 : pNext->pPrev = pPrev;
47 105 : pPrev->pNext = pNext;
48 :
49 : // insert into "new"
50 105 : if( pDestRing )
51 : {
52 35 : pNext = pDestRing;
53 35 : pPrev = pDestRing->pPrev;
54 35 : pDestRing->pPrev = this;
55 35 : pPrev->pNext = this;
56 : }
57 : else
58 : {
59 70 : pNext = pPrev = this;
60 : }
61 :
62 105 : }
63 :
64 4 : void Ring::MoveRingTo(Ring *pDestRing)
65 : {
66 : // insert the whole ring into DestRing
67 4 : Ring* pMyPrev = pPrev;
68 4 : Ring* pDestPrev = pDestRing->pPrev;
69 :
70 4 : pMyPrev->pNext = pDestRing;
71 4 : pDestPrev->pNext = this;
72 4 : pDestRing->pPrev = pMyPrev;
73 4 : pPrev = pDestPrev;
74 4 : }
75 :
76 0 : sal_uInt32 Ring::numberOf() const
77 : {
78 0 : sal_uInt32 nRet = 1;
79 0 : const Ring* pNxt = pNext;
80 0 : while( pNxt != this )
81 : {
82 0 : ++nRet;
83 0 : pNxt = pNxt->GetNext();
84 : }
85 0 : return nRet;
86 : }
87 :
88 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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