1/*
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
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
6 * under the terms of the GNU General Public License version 2 only, as
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.
10 *
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.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package 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 */
35public 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     */
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     */
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     */
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     */
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     */
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