Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: src/share/classes/com/sun/tools/javac/util/Pair.java
src/share/classes/com/sun/tools/javac/util/Pair.java
- changeset 1664
- 330b35b27e68
- parent 581
- f2fdd52e4e87
- child 2525
- 2eb010b6cb22
equal
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| 1659:65e1ca8dcdc7 | 1664:330b35b27e68 |
|---|---|
| 1 /* | 1 /* |
| 2 * Copyright (c) 1999, 2005, Oracle and/or its affiliates. All rights reserved. | 2 * Copyright (c) 1999, 2013, 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 |
| 23 * questions. | 23 * questions. |
| 24 */ | 24 */ |
| 25 | 25 |
| 26 package com.sun.tools.javac.util; | 26 package com.sun.tools.javac.util; |
| 27 | 27 |
| 28 import java.util.Objects; | |
| 29 | |
| 28 /** A generic class for pairs. | 30 /** A generic class for pairs. |
| 29 * | 31 * |
| 30 * <p><b>This is NOT part of any supported API. | 32 * <p><b>This is NOT part of any supported API. |
| 31 * If you write code that depends on this, you do so at your own risk. | 33 * If you write code that depends on this, you do so at your own risk. |
| 32 * This code and its internal interfaces are subject to change or | 34 * This code and its internal interfaces are subject to change or |
| 44 | 46 |
| 45 public String toString() { | 47 public String toString() { |
| 46 return "Pair[" + fst + "," + snd + "]"; | 48 return "Pair[" + fst + "," + snd + "]"; |
| 47 } | 49 } |
| 48 | 50 |
| 49 private static boolean equals(Object x, Object y) { | |
| 50 return (x == null && y == null) || (x != null && x.equals(y)); | |
| 51 } | |
| 52 | |
| 53 public boolean equals(Object other) { | 51 public boolean equals(Object other) { |
| 54 return | 52 return |
| 55 other instanceof Pair<?,?> && | 53 other instanceof Pair<?,?> && |
| 56 equals(fst, ((Pair<?,?>)other).fst) && | 54 Objects.equals(fst, ((Pair<?,?>)other).fst) && |
| 57 equals(snd, ((Pair<?,?>)other).snd); | 55 Objects.equals(snd, ((Pair<?,?>)other).snd); |
| 58 } | 56 } |
| 59 | 57 |
| 60 public int hashCode() { | 58 public int hashCode() { |
| 61 if (fst == null) return (snd == null) ? 0 : snd.hashCode() + 1; | 59 if (fst == null) return (snd == null) ? 0 : snd.hashCode() + 1; |
| 62 else if (snd == null) return fst.hashCode() + 2; | 60 else if (snd == null) return fst.hashCode() + 2; |
