1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/*
* reserved comment block
* DO NOT REMOVE OR ALTER!
*/
/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 1999-2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xerces" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 1999, International
* Business Machines, Inc., http://www.apache.org. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package com.sun.org.apache.xerces.internal.impl.dtd.models;
import com.sun.org.apache.xerces.internal.impl.dtd.XMLContentSpec;
import com.sun.org.apache.xerces.internal.xni.QName;
/**
* Content model leaf node.
*
* @xerces.internal
*
*/
public class CMLeaf
extends CMNode {
//
// Data
//
/** This is the element that this leaf represents. */
private QName fElement = new QName();
/**
* Part of the algorithm to convert a regex directly to a DFA
* numbers each leaf sequentially. If its -1, that means its an
* epsilon node. Zero and greater are non-epsilon positions.
*/
private int fPosition = -1;
//
// Constructors
//
/** Constructs a content model leaf. */
public CMLeaf(QName element, int position) {
super(XMLContentSpec.CONTENTSPECNODE_LEAF);
// Store the element index and position
fElement.setValues(element);
fPosition = position;
}
/** Constructs a content model leaf. */
public CMLeaf(QName element) {
super(XMLContentSpec.CONTENTSPECNODE_LEAF);
// Store the element index and position
fElement.setValues(element);
}
//
// Package methods
//
final QName getElement()
{
return fElement;
}
final int getPosition()
{
return fPosition;
}
final void setPosition(int newPosition)
{
fPosition = newPosition;
}
//
// CMNode methods
//
// package
public boolean isNullable()
{
// Leaf nodes are never nullable unless its an epsilon node
return (fPosition == -1);
}
public String toString()
{
StringBuffer strRet = new StringBuffer(fElement.toString());
strRet.append(" (");
strRet.append(fElement.uri);
strRet.append(',');
strRet.append(fElement.localpart);
strRet.append(')');
if (fPosition >= 0)
{
strRet.append
(
" (Pos:"
+ new Integer(fPosition).toString()
+ ")"
);
}
return strRet.toString();
}
// protected
protected void calcFirstPos(CMStateSet toSet)
{
// If we are an epsilon node, then the first pos is an empty set
if (fPosition == -1)
toSet.zeroBits();
// Otherwise, its just the one bit of our position
else
toSet.setBit(fPosition);
}
protected void calcLastPos(CMStateSet toSet)
{
// If we are an epsilon node, then the last pos is an empty set
if (fPosition == -1)
toSet.zeroBits();
// Otherwise, its just the one bit of our position
else
toSet.setBit(fPosition);
}
} // class CMLeaf
|
