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070d3ab2 MG |
1 | /* |
2 | * Copyright (C) 2008 Google Inc. | |
3 | * | |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | package com.google.gson.internal; | |
18 | ||
19 | /** | |
20 | * A simple utility class used to check method Preconditions. | |
21 | * | |
22 | * <pre> | |
23 | * public long divideBy(long value) { | |
24 | * Preconditions.checkArgument(value != 0); | |
25 | * return this.value / value; | |
26 | * } | |
27 | * </pre> | |
28 | * | |
29 | * @author Inderjeet Singh | |
30 | * @author Joel Leitch | |
31 | */ | |
32 | public final class $Gson$Preconditions { | |
33 | public static <T> T checkNotNull(T obj) { | |
34 | if (obj == null) { | |
35 | throw new NullPointerException(); | |
36 | } | |
37 | return obj; | |
38 | } | |
39 | ||
40 | public static void checkArgument(boolean condition) { | |
41 | if (!condition) { | |
42 | throw new IllegalArgumentException(); | |
43 | } | |
44 | } | |
45 | } |