Mercurial > jdk8-mips64-public > langtools / annotate
src/share/classes/com/sun/tools/javac/util/Assert.java@af8417e590f4 (annotated)
src/share/classes/com/sun/tools/javac/util/Assert.java
Sun, 17 Feb 2013 16:44:55 -0500
- author
- dholmes
- date
- Sun, 17 Feb 2013 16:44:55 -0500
- changeset 1571
- af8417e590f4
- parent 0
- 959103a6100f
- permissions
- -rw-r--r--
Merge
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. Oracle designates this |
| aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
| aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
| aoqi@0 | 10 | * |
| aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 15 | * accompanied this code). |
| aoqi@0 | 16 | * |
| aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 20 | * |
| aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 23 | * questions. |
| aoqi@0 | 24 | */ |
| aoqi@0 | 25 | |
| aoqi@0 | 26 | package com.sun.tools.javac.util; |
| aoqi@0 | 27 | |
| aoqi@0 | 28 | |
| aoqi@0 | 29 | /** |
| aoqi@0 | 30 | * Simple facility for unconditional assertions. |
| aoqi@0 | 31 | * The methods in this class are described in terms of equivalent assert |
| aoqi@0 | 32 | * statements, assuming that assertions have been enabled. |
| aoqi@0 | 33 | * |
| aoqi@0 | 34 | * <p><b>This is NOT part of any supported API. |
| aoqi@0 | 35 | * If you write code that depends on this, you do so at your own risk. |
| aoqi@0 | 36 | * This code and its internal interfaces are subject to change or |
| aoqi@0 | 37 | * deletion without notice.</b> |
| aoqi@0 | 38 | */ |
| aoqi@0 | 39 | public class Assert { |
| aoqi@0 | 40 | /** Equivalent to |
| aoqi@0 | 41 | * assert cond; |
| aoqi@0 | 42 | */ |
| aoqi@0 | 43 | public static void check(boolean cond) { |
| aoqi@0 | 44 | if (!cond) |
| aoqi@0 | 45 | error(); |
| aoqi@0 | 46 | } |
| aoqi@0 | 47 | |
| aoqi@0 | 48 | /** Equivalent to |
| aoqi@0 | 49 | * assert (o == null); |
| aoqi@0 | 50 | */ |
| aoqi@0 | 51 | public static void checkNull(Object o) { |
| aoqi@0 | 52 | if (o != null) |
| aoqi@0 | 53 | error(); |
| aoqi@0 | 54 | } |
| aoqi@0 | 55 | |
| aoqi@0 | 56 | /** Equivalent to |
| aoqi@0 | 57 | * assert (t != null); return t; |
| aoqi@0 | 58 | */ |
| aoqi@0 | 59 | public static <T> T checkNonNull(T t) { |
| aoqi@0 | 60 | if (t == null) |
| aoqi@0 | 61 | error(); |
| aoqi@0 | 62 | return t; |
| aoqi@0 | 63 | } |
| aoqi@0 | 64 | |
| aoqi@0 | 65 | /** Equivalent to |
| aoqi@0 | 66 | * assert cond : value; |
| aoqi@0 | 67 | */ |
| aoqi@0 | 68 | public static void check(boolean cond, int value) { |
| aoqi@0 | 69 | if (!cond) |
| aoqi@0 | 70 | error(String.valueOf(value)); |
| aoqi@0 | 71 | } |
| aoqi@0 | 72 | |
| aoqi@0 | 73 | /** Equivalent to |
| aoqi@0 | 74 | * assert cond : value; |
| aoqi@0 | 75 | */ |
| aoqi@0 | 76 | public static void check(boolean cond, long value) { |
| aoqi@0 | 77 | if (!cond) |
| aoqi@0 | 78 | error(String.valueOf(value)); |
| aoqi@0 | 79 | } |
| aoqi@0 | 80 | |
| aoqi@0 | 81 | /** Equivalent to |
| aoqi@0 | 82 | * assert cond : value; |
| aoqi@0 | 83 | */ |
| aoqi@0 | 84 | public static void check(boolean cond, Object value) { |
| aoqi@0 | 85 | if (!cond) |
| aoqi@0 | 86 | error(String.valueOf(value)); |
| aoqi@0 | 87 | } |
| aoqi@0 | 88 | |
| aoqi@0 | 89 | /** Equivalent to |
| aoqi@0 | 90 | * assert cond : value; |
| aoqi@0 | 91 | */ |
| aoqi@0 | 92 | public static void check(boolean cond, String msg) { |
| aoqi@0 | 93 | if (!cond) |
| aoqi@0 | 94 | error(msg); |
| aoqi@0 | 95 | } |
| aoqi@0 | 96 | |
| aoqi@0 | 97 | /** Equivalent to |
| aoqi@0 | 98 | * assert (o == null) : value; |
| aoqi@0 | 99 | */ |
| aoqi@0 | 100 | public static void checkNull(Object o, Object value) { |
| aoqi@0 | 101 | if (o != null) |
| aoqi@0 | 102 | error(String.valueOf(value)); |
| aoqi@0 | 103 | } |
| aoqi@0 | 104 | |
| aoqi@0 | 105 | /** Equivalent to |
| aoqi@0 | 106 | * assert (o == null) : value; |
| aoqi@0 | 107 | */ |
| aoqi@0 | 108 | public static void checkNull(Object o, String msg) { |
| aoqi@0 | 109 | if (o != null) |
| aoqi@0 | 110 | error(msg); |
| aoqi@0 | 111 | } |
| aoqi@0 | 112 | |
| aoqi@0 | 113 | /** Equivalent to |
| aoqi@0 | 114 | * assert (o != null) : value; |
| aoqi@0 | 115 | */ |
| aoqi@0 | 116 | public static <T> T checkNonNull(T t, String msg) { |
| aoqi@0 | 117 | if (t == null) |
| aoqi@0 | 118 | error(msg); |
| aoqi@0 | 119 | return t; |
| aoqi@0 | 120 | } |
| aoqi@0 | 121 | |
| aoqi@0 | 122 | /** Equivalent to |
| aoqi@0 | 123 | * assert false; |
| aoqi@0 | 124 | */ |
| aoqi@0 | 125 | public static void error() { |
| aoqi@0 | 126 | throw new AssertionError(); |
| aoqi@0 | 127 | } |
| aoqi@0 | 128 | |
| aoqi@0 | 129 | /** Equivalent to |
| aoqi@0 | 130 | * assert false : msg; |
| aoqi@0 | 131 | */ |
| aoqi@0 | 132 | public static void error(String msg) { |
| aoqi@0 | 133 | throw new AssertionError(msg); |
| aoqi@0 | 134 | } |
| aoqi@0 | 135 | |
| aoqi@0 | 136 | /** Prevent instantiation. */ |
| aoqi@0 | 137 | private Assert() { } |
| aoqi@0 | 138 | } |
