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author | Julien Desprez <jdesprez@google.com> | 2018-10-22 11:42:32 -0700 |
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committer | android-build-merger <android-build-merger@google.com> | 2018-10-22 11:42:32 -0700 |
commit | 108d816db7cf4559963e6474a679af7a25d892ad (patch) | |
tree | ede84fcf0a9687d4907ae5f8a4788271d62e0922 /impl_core/src/main/java/io/opencensus/implcore/internal/Utils.java | |
parent | cfbefd32336596ea63784607e4106dc37ce0567f (diff) | |
parent | 13217871fefa43f6d16fbb31b04e9904996d87d5 (diff) | |
download | opencensus-java-108d816db7cf4559963e6474a679af7a25d892ad.tar.gz |
Merge remote-tracking branch 'aosp/upstream-master' into merge am: dd3cabeacc am: 6fbc3cf5a1
am: 13217871fe
Change-Id: Icfe12d6db2f81a6f5c65241919b1d63fb665ffd6
Diffstat (limited to 'impl_core/src/main/java/io/opencensus/implcore/internal/Utils.java')
-rw-r--r-- | impl_core/src/main/java/io/opencensus/implcore/internal/Utils.java | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/impl_core/src/main/java/io/opencensus/implcore/internal/Utils.java b/impl_core/src/main/java/io/opencensus/implcore/internal/Utils.java new file mode 100644 index 00000000..05a039b9 --- /dev/null +++ b/impl_core/src/main/java/io/opencensus/implcore/internal/Utils.java @@ -0,0 +1,41 @@ +/* + * Copyright 2018, OpenCensus Authors + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package io.opencensus.implcore.internal; + +import java.util.List; + +/** General internal utility methods. */ +public final class Utils { + + private Utils() {} + + /** + * Throws a {@link NullPointerException} if any of the list elements is null. + * + * @param list the argument list to check for null. + * @param errorMessage the message to use for the exception. Will be converted to a string using + * {@link String#valueOf(Object)}. + */ + public static <T> void checkListElementNotNull( + List<T> list, @javax.annotation.Nullable Object errorMessage) { + for (T element : list) { + if (element == null) { + throw new NullPointerException(String.valueOf(errorMessage)); + } + } + } +} |