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comparison graal/com.oracle.truffle.api/src/com/oracle/truffle/api/source/LineLocation.java @ 18986:50b22daf6d53

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Truffle/Source: add default comparator for LineLocation
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Tue, 27 Jan 2015 20:25:26 -0800
parents e3c95cbbb50c
children
comparison
equal deleted inserted replaced
18985:867058575979 18986:50b22daf6d53
1 /* 1 /*
2 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this 7 * published by the Free Software Foundation. Oracle designates this
22 * or visit www.oracle.com if you need additional information or have any 22 * or visit www.oracle.com if you need additional information or have any
23 * questions. 23 * questions.
24 */ 24 */
25 package com.oracle.truffle.api.source; 25 package com.oracle.truffle.api.source;
26 26
27 import java.util.*;
28
27 /** 29 /**
28 * A specification for a location in guest language source, expressed as a line number in a specific 30 * A specification for a location in guest language source, expressed as a line number in a specific
29 * instance of {@link Source}, suitable for hash table keys with equality defined in terms of 31 * instance of {@link Source}, suitable for hash table keys with equality defined in terms of
30 * content. 32 * content.
31 */ 33 */
38 */ 40 */
39 int getLineNumber(); 41 int getLineNumber();
40 42
41 String getShortDescription(); 43 String getShortDescription();
42 44
45 /**
46 * Default comparator by (1) textual path name, (2) line number.
47 */
48 Comparator<LineLocation> COMPARATOR = new Comparator<LineLocation>() {
49
50 public int compare(LineLocation l1, LineLocation l2) {
51 final int sourceResult = l1.getSource().getPath().compareTo(l2.getSource().getPath());
52 if (sourceResult != 0) {
53 return sourceResult;
54 }
55 return Integer.compare(l1.getLineNumber(), l2.getLineNumber());
56 }
57
58 };
59
43 } 60 }