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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
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7  * published by the Free Software Foundation.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
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11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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24  */
25 
26 package jdk.internal.util.xml.impl;
27 
28 
29 /**
30  * A name with value pair.
31  *
32  * This class keeps name with value pair with additional information and
33  * supports pair chaining.
34  */
35 public class Pair {
36 
37     /** The pair name. */
38     public String name;
39     /** The pair value. */
40     public String value;
41     /** The pair numeric value. */
42     public int num;
43     /** The characters of name. */
44     public char[] chars;
45     /** The pair identifier. */
46     public int id;
47     /** The list of associated pairs. */
48     public Pair list;
49     /** The next pair in a chain. */
50     public Pair next;
51 
52     /**
53      * Creates a qualified name string from qualified name.
54      *
55      * @return The qualified name string.
56      */
qname()57     public String qname() {
58         return new String(chars, 1, chars.length - 1);
59     }
60 
61     /**
62      * Creates a local name string from qualified name.
63      *
64      * @return The local name string.
65      */
local()66     public String local() {
67         if (chars[0] != 0) {
68             return new String(chars, chars[0] + 1, chars.length - chars[0] - 1);
69         }
70         return new String(chars, 1, chars.length - 1);
71     }
72 
73     /**
74      * Creates a prefix string from qualified name.
75      *
76      * @return The prefix string.
77      */
pref()78     public String pref() {
79         if (chars[0] != 0) {
80             return new String(chars, 1, chars[0] - 1);
81         }
82         return "";
83     }
84 
85     /**
86      * Compares two qualified name prefixes.
87      *
88      * @param qname A qualified name.
89      * @return true if prefixes are equal.
90      */
eqpref(char[] qname)91     public boolean eqpref(char[] qname) {
92         if (chars[0] == qname[0]) {
93             char len = chars[0];
94             for (char i = 1; i < len; i += 1) {
95                 if (chars[i] != qname[i]) {
96                     return false;
97                 }
98             }
99             return true;
100         }
101         return false;
102     }
103 
104     /**
105      * Compares two qualified names.
106      *
107      * @param qname A qualified name.
108      * @return true if qualified names are equal.
109      */
eqname(char[] qname)110     public boolean eqname(char[] qname) {
111         char len = (char) chars.length;
112         if (len == qname.length) {
113             for (char i = 0; i < len; i += 1) {
114                 if (chars[i] != qname[i]) {
115                     return false;
116                 }
117             }
118             return true;
119         }
120         return false;
121     }
122 }
123