0023002: empty delete operator in TDF_LabelNode
[occt.git] / src / TDF / TDF_LabelNode.cxx
CommitLineData
b311480e 1// Created by: DAUTRY Philippe
2// Copyright (c) 1997-1999 Matra Datavision
3// Copyright (c) 1999-2012 OPEN CASCADE SAS
4//
5// The content of this file is subject to the Open CASCADE Technology Public
6// License Version 6.5 (the "License"). You may not use the content of this file
7// except in compliance with the License. Please obtain a copy of the License
8// at http://www.opencascade.org and read it completely before using this file.
9//
10// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
11// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
12//
13// The Original Code and all software distributed under the License is
14// distributed on an "AS IS" basis, without warranty of any kind, and the
15// Initial Developer hereby disclaims all such warranties, including without
16// limitation, any warranties of merchantability, fitness for a particular
17// purpose or non-infringement. Please see the License for the specific terms
18// and conditions governing the rights and limitations under the License.
19
7fd59977 20#include <TDF_LabelNode.hxx>
21
22#include <TDF_Data.hxx>
23#include <TDF_Label.hxx>
24
25//=======================================================================
26//function : TDF_LabelNode
27//purpose : Constructor with TDF_Data*, only used for root node.
28//=======================================================================
29
30TDF_LabelNode::TDF_LabelNode
31(TDF_Data* aDataPtr)
32: myFather (NULL), // The sign it is the root.
33#ifdef KEEP_LOCAL_ROOT
34 myBrother (NULL),
35#else
36 myBrother ((TDF_LabelNode *)aDataPtr),
37#endif
38 myFirstChild (NULL),
39 myLastFoundChild (NULL), //jfa 10.01.2003
40 myTag (0), // Always 0 for root.
41 myFlags (0),
42#ifdef KEEP_LOCAL_ROOT
43 myData (aDataPtr)
44#endif
45{
46#ifdef DEB
47 myDebugEntry = '0';
48#endif
49}
50
51
52//=======================================================================
53//function : TDF_LabelNode
54//purpose : Constructor
55//=======================================================================
56
57TDF_LabelNode::TDF_LabelNode
58(const Standard_Integer aTag, TDF_LabelNode* aFather)
59: myFather (aFather),
60 myBrother (NULL),
61 myFirstChild (NULL),
62 myLastFoundChild (NULL), //jfa 10.01.2003
63 myTag (aTag),
64 myFlags (0),
65#ifdef KEEP_LOCAL_ROOT
66 myData (NULL)
67#endif
68{
69 if (aFather != NULL) {
70 Depth(aFather->Depth() + 1);
71#ifdef KEEP_LOCAL_ROOT
72 myData = aFather -> Data();
73#endif
74 }
75#ifdef DEB
76 myDebugEntry = myFather->myDebugEntry;
77 myDebugEntry += ':';
78 myDebugEntry += aTag;
79#endif
80}
81
82//=======================================================================
60d4560d 83//function : Destroy
7fd59977 84//purpose :
85//=======================================================================
86
60d4560d 87void TDF_LabelNode::Destroy (const TDF_HAllocator& theAllocator)
7fd59977 88{
89 // MSV 21.03.2003: do not delete brother, rather delete all children in a loop
90 // to avoid stack overflow
91 while (myFirstChild != NULL) {
92 TDF_LabelNode* aSecondChild = myFirstChild->Brother();
60d4560d 93 myFirstChild->Destroy (theAllocator);
7fd59977 94 myFirstChild = aSecondChild;
95 }
96 myFirstAttribute.Nullify();
60d4560d 97 myFather = myBrother = myFirstChild = myLastFoundChild = NULL;
98 myTag = myFlags = 0;
99
100 // deallocate memory (does nothing for IncAllocator)
101 theAllocator->Free (this);
7fd59977 102}
103
104//=======================================================================
105//function : AddAttribute
106//purpose : Adds an attribute at the first or the specified position.
107//=======================================================================
108
109void TDF_LabelNode::AddAttribute
110(const Handle(TDF_Attribute)& afterAtt,
111 const Handle(TDF_Attribute)& newAtt)
112{
113 newAtt->myFlags = 1; // Valid.
114 newAtt->myLabelNode = this;
115 if (afterAtt.IsNull()) { // Inserts at beginning.
116 newAtt->myNext = myFirstAttribute;
117 myFirstAttribute = newAtt;
118 }
119 else { // Inserts at specified place.
120 newAtt->myNext = afterAtt->myNext;
121 afterAtt->myNext = newAtt;
122 }
123}
124
125
126//=======================================================================
127//function : RemoveAttribute
128//purpose : Removes an attribute from the first or the specified position.
129//=======================================================================
130
131void TDF_LabelNode::RemoveAttribute
132(const Handle(TDF_Attribute)& afterAtt,
133 const Handle(TDF_Attribute)& oldAtt)
134{
135 oldAtt->myFlags = 0; // Unvalid.
136 oldAtt->myLabelNode = NULL;
137 if (afterAtt.IsNull()) { // Removes from beginning.
138 myFirstAttribute = oldAtt->myNext;
139 }
140 else { // Removes from specified place.
141 afterAtt->myNext = oldAtt->myNext;
142 }
143 // Nullifier le next induit l'iterateur d'attribut en erreur.
144 //oldAtt->myNext.Nullify();
145}
146
147
148//=======================================================================
149//function : RootNode
150//purpose : used for non const object.
151//=======================================================================
152
153TDF_LabelNode* TDF_LabelNode::RootNode ()
154{
155#ifdef KEEP_LOCAL_ROOT
156 return myData? myData -> myRoot: 0L;
157#else
158 TDF_LabelNode* lp = this;
159 while (lp->myFather != NULL) lp = lp->myFather;
160 return lp;
161#endif
162}
163
164
165//=======================================================================
166//function : RootNode
167//purpose : used for const object.
168//=======================================================================
169
170const TDF_LabelNode* TDF_LabelNode::RootNode () const
171{
172#ifdef KEEP_LOCAL_ROOT
173 return myData? myData -> myRoot: 0L;
174#else
175 const TDF_LabelNode* lp = this;
176 while (lp->myFather != NULL) lp = lp->myFather;
177 return lp;
178#endif
179}
180
181
182//=======================================================================
183//function : Data
184//purpose :
185//=======================================================================
186
187TDF_Data * TDF_LabelNode::Data () const
188{
189#ifdef KEEP_LOCAL_ROOT
190 return myData;
191#else
192 const TDF_LabelNode* ln = RootNode()->myBrother;
193 return ((TDF_Data*) ln);
194#endif
195}
196
197
198//=======================================================================
199//function : AllMayBeModified
200//purpose :
201//=======================================================================
202
203void TDF_LabelNode::AllMayBeModified()
204{
205 MayBeModified(Standard_True);
206 if (myFather && !myFather->MayBeModified()) myFather->AllMayBeModified();
207}