source: NonGTP/Xerces/xercesc/validators/common/CMNode.hpp @ 188

Revision 188, 9.9 KB checked in by mattausch, 19 years ago (diff)

added xercesc to support

Line 
1/*
2 * The Apache Software License, Version 1.1
3 *
4 * Copyright (c) 1999-2001 The Apache Software Foundation.  All rights
5 * reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in
16 *    the documentation and/or other materials provided with the
17 *    distribution.
18 *
19 * 3. The end-user documentation included with the redistribution,
20 *    if any, must include the following acknowledgment:
21 *       "This product includes software developed by the
22 *        Apache Software Foundation (http://www.apache.org/)."
23 *    Alternately, this acknowledgment may appear in the software itself,
24 *    if and wherever such third-party acknowledgments normally appear.
25 *
26 * 4. The names "Xerces" and "Apache Software Foundation" must
27 *    not be used to endorse or promote products derived from this
28 *    software without prior written permission. For written
29 *    permission, please contact apache\@apache.org.
30 *
31 * 5. Products derived from this software may not be called "Apache",
32 *    nor may "Apache" appear in their name, without prior written
33 *    permission of the Apache Software Foundation.
34 *
35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
42 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
45 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46 * SUCH DAMAGE.
47 * ====================================================================
48 *
49 * This software consists of voluntary contributions made by many
50 * individuals on behalf of the Apache Software Foundation, and was
51 * originally based on software copyright (c) 1999, International
52 * Business Machines, Inc., http://www.ibm.com .  For more information
53 * on the Apache Software Foundation, please see
54 * <http://www.apache.org/>.
55 */
56
57/*
58 * $Log: CMNode.hpp,v $
59 * Revision 1.5  2003/05/16 21:43:20  knoaman
60 * Memory manager implementation: Modify constructors to pass in the memory manager.
61 *
62 * Revision 1.4  2003/05/15 18:48:27  knoaman
63 * Partial implementation of the configurable memory manager.
64 *
65 * Revision 1.3  2003/03/07 18:16:57  tng
66 * Return a reference instead of void for operator=
67 *
68 * Revision 1.2  2002/11/04 14:54:58  tng
69 * C++ Namespace Support.
70 *
71 * Revision 1.1.1.1  2002/02/01 22:22:38  peiyongz
72 * sane_include
73 *
74 * Revision 1.3  2001/05/11 13:27:17  tng
75 * Copyright update.
76 *
77 * Revision 1.2  2001/02/16 14:58:57  tng
78 * Schema: Update Makefile, configure files, project files, and include path in
79 * certain cpp files because of the move of the common Content Model files.  By Pei Yong Zhang.
80 *
81 * Revision 1.1  2001/02/16 14:17:29  tng
82 * Schema: Move the common Content Model files that are shared by DTD
83 * and schema from 'DTD' folder to 'common' folder.  By Pei Yong Zhang.
84 *
85 * Revision 1.5  2000/03/28 19:43:25  roddey
86 * Fixes for signed/unsigned warnings. New work for two way transcoding
87 * stuff.
88 *
89 * Revision 1.4  2000/03/02 19:55:37  roddey
90 * This checkin includes many changes done while waiting for the
91 * 1.1.0 code to be finished. I can't list them all here, but a list is
92 * available elsewhere.
93 *
94 * Revision 1.3  2000/02/24 20:16:48  abagchi
95 * Swat for removing Log from API docs
96 *
97 * Revision 1.2  2000/02/09 21:42:36  abagchi
98 * Copyright swat
99 *
100 * Revision 1.1.1.1  1999/11/09 01:03:05  twl
101 * Initial checkin
102 *
103 * Revision 1.2  1999/11/08 20:45:36  rahul
104 * Swat for adding in Product name and CVS comment log variable.
105 *
106 */
107
108#if !defined(CMNODE_HPP)
109#define CMNODE_HPP
110
111#include <xercesc/validators/common/ContentSpecNode.hpp>
112#include <xercesc/validators/common/CMStateSet.hpp>
113
114XERCES_CPP_NAMESPACE_BEGIN
115
116class CMNode : public XMemory
117{
118public :
119    // -----------------------------------------------------------------------
120    //  Constructors and Destructors
121    // -----------------------------------------------------------------------
122    CMNode
123    (
124        const ContentSpecNode::NodeTypes type
125        , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager
126    );
127    virtual ~CMNode();
128
129
130    // -----------------------------------------------------------------------
131    //  Virtual methods to be provided derived node classes
132    // -----------------------------------------------------------------------
133    virtual bool isNullable() const = 0;
134
135
136    // -----------------------------------------------------------------------
137    //  Getter methods
138    // -----------------------------------------------------------------------
139    ContentSpecNode::NodeTypes getType() const;
140    const CMStateSet& getFirstPos() const;
141    const CMStateSet& getLastPos() const;
142
143
144    // -----------------------------------------------------------------------
145    //  Setter methods
146    // -----------------------------------------------------------------------
147    void setMaxStates(const unsigned int maxStates);
148
149
150protected :
151    // -----------------------------------------------------------------------
152    //  Protected, abstract methods
153    // -----------------------------------------------------------------------
154    virtual void calcFirstPos(CMStateSet& toUpdate) const = 0;
155    virtual void calcLastPos(CMStateSet& toUpdate) const = 0;
156
157    // -----------------------------------------------------------------------
158    //  Protected data members
159    //
160    //  fMemoryManager
161    //      Pluggable memory manager for dynamic allocation/deallocation.
162    // -----------------------------------------------------------------------
163    MemoryManager*             fMemoryManager;
164
165
166private :
167    // -----------------------------------------------------------------------
168    //  Unimplemented constructors and operators
169    // -----------------------------------------------------------------------
170    CMNode();
171    CMNode(const CMNode&);
172    CMNode& operator=(const CMNode&);
173
174
175    // -----------------------------------------------------------------------
176    //  Private data members
177    //
178    //  fType
179    //      The type of node. This indicates whether its a leaf or an
180    //      operation.
181    //
182    //  fFirstPos
183    //      The set of NFA states that represent the entry states of this
184    //      node in the DFA.
185    //
186    //  fLastPos
187    //      The set of NFA states that represent the final states of this
188    //      node in the DFA.
189    //
190    //  fMaxStates
191    //      The maximum number of states that the NFA has, which means the
192    //      max number of NFA states that have to be traced in the state
193    //      sets during the building of the DFA. Its unfortunate that it
194    //      has to be stored redundantly, but we need to fault in the
195    //      state set members and they have to be sized to this size.
196    // -----------------------------------------------------------------------
197    ContentSpecNode::NodeTypes fType;
198    CMStateSet*                fFirstPos;
199    CMStateSet*                fLastPos;
200    unsigned int               fMaxStates;
201};
202
203
204
205// ---------------------------------------------------------------------------
206//  CMNode: Constructors and Destructors
207// ---------------------------------------------------------------------------
208inline CMNode::CMNode(const ContentSpecNode::NodeTypes type,
209                      MemoryManager* const manager) :
210
211    fMemoryManager(manager)
212    , fType(type)
213    , fFirstPos(0)
214    , fLastPos(0)
215    , fMaxStates(~0)
216{
217}
218
219inline CMNode::~CMNode()
220{
221    // Clean up any position sets that got created
222    delete fFirstPos;
223    delete fLastPos;
224}
225
226
227// ---------------------------------------------------------------------------
228//  CMNode: Getter methods
229// ---------------------------------------------------------------------------
230inline ContentSpecNode::NodeTypes CMNode::getType() const
231{
232    return fType;
233}
234
235inline const CMStateSet& CMNode::getFirstPos() const
236{
237    //
238    //  Fault in the state set if needed. Since we can't use mutable members
239    //  cast off the const'ness.
240    //
241    if (!fFirstPos)
242    {
243        CMNode* unconstThis = (CMNode*)this;
244        unconstThis->fFirstPos = new (fMemoryManager) CMStateSet(fMaxStates, fMemoryManager);
245        unconstThis->calcFirstPos(*fFirstPos);
246    }
247    return *fFirstPos;
248}
249
250inline const CMStateSet& CMNode::getLastPos() const
251{
252    //
253    //  Fault in the state set if needed. Since we can't use mutable members
254    //  cast off the const'ness.
255    //
256    if (!fLastPos)
257    {
258        CMNode* unconstThis = (CMNode*)this;
259        unconstThis->fLastPos = new (fMemoryManager) CMStateSet(fMaxStates, fMemoryManager);
260        unconstThis->calcLastPos(*fLastPos);
261    }
262    return *fLastPos;
263}
264
265
266// ---------------------------------------------------------------------------
267//  CMNode: Setter methods
268// ---------------------------------------------------------------------------
269inline void CMNode::setMaxStates(const unsigned int maxStates)
270{
271    fMaxStates = maxStates;
272}
273
274XERCES_CPP_NAMESPACE_END
275
276#endif
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