KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > go > trove > classfile > LocationRangeImpl


1 /* ====================================================================
2  * Trove - Copyright (c) 1997-2000 Walt Disney Internet Group
3  * ====================================================================
4  * The Tea Software License, Version 1.1
5  *
6  * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  * notice, this list of conditions and the following disclaimer in
17  * the documentation and/or other materials provided with the
18  * distribution.
19  *
20  * 3. The end-user documentation included with the redistribution,
21  * if any, must include the following acknowledgment:
22  * "This product includes software developed by the
23  * Walt Disney Internet Group (http://opensource.go.com/)."
24  * Alternately, this acknowledgment may appear in the software itself,
25  * if and wherever such third-party acknowledgments normally appear.
26  *
27  * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must
28  * not be used to endorse or promote products derived from this
29  * software without prior written permission. For written
30  * permission, please contact opensource@dig.com.
31  *
32  * 5. Products derived from this software may not be called "Tea",
33  * "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet",
34  * "Kettle", "Trove" or "BeanDoc" appear in their name, without prior
35  * written permission of the Walt Disney Internet Group.
36  *
37  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40  * DISCLAIMED. IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS
41  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
42  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
43  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
44  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
45  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
46  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
47  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
48  * ====================================================================
49  *
50  * For more information about Tea, please see http://opensource.go.com/.
51  */

52
53 package com.go.trove.classfile;
54
55 /******************************************************************************
56  *
57  * @author Brian S O'Neill
58  * @version
59  * <!--$$Revision:--> 2 <!-- $-->, <!--$$JustDate:--> 9/07/00 <!-- $-->
60  */

61 class LocationRangeImpl implements LocationRange {
62     private final Location mStart;
63     private final Location mEnd;
64
65     LocationRangeImpl(Location a, Location b) {
66         if (a.compareTo(b) <= 0) {
67             mStart = a;
68             mEnd = b;
69         }
70         else {
71             mStart = b;
72             mEnd = a;
73         }
74     }
75
76     LocationRangeImpl(LocationRange a, LocationRange b) {
77         mStart = (a.getStartLocation().compareTo(b.getStartLocation()) <= 0) ?
78             a.getStartLocation() : b.getStartLocation();
79
80         mEnd = (b.getEndLocation().compareTo(a.getEndLocation()) >= 0) ?
81             b.getEndLocation() : a.getEndLocation();
82     }
83
84     public Location getStartLocation() {
85         return mStart;
86     }
87
88     public Location getEndLocation() {
89         return mEnd;
90     }
91
92     public boolean equals(Object JavaDoc obj) {
93         return compareTo(obj) == 0;
94     }
95
96     public int compareTo(Object JavaDoc obj) {
97         if (this == obj) {
98             return 0;
99         }
100
101         LocationRange other = (LocationRange)obj;
102
103         int result = getStartLocation().compareTo(other.getStartLocation());
104
105         if (result == 0) {
106             result = getEndLocation().compareTo(other.getEndLocation());
107         }
108
109         return result;
110     }
111
112     public String JavaDoc toString() {
113         int start = getStartLocation().getLocation();
114         int end = getEndLocation().getLocation() - 1;
115
116         if (start == end) {
117             return String.valueOf(start);
118         }
119         else {
120             return start + ".." + end;
121         }
122     }
123 }
124
Popular Tags