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Add null analysis annotation to CollectionUtils

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Change-Id: I3a610b037d6d1431cced3ea193171108bd5a040d
This commit is contained in:
Tadashi G. Takaoka 2014-10-27 18:20:44 +09:00
parent 5547b49b17
commit 7a3de4dca9
2 changed files with 7 additions and 6 deletions
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12
java/src/com/android/inputmethod/latin/utils/CollectionUtils.java
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@ -19,15 +19,17 @@ package com.android.inputmethod.latin.utils;
import java.util.ArrayList;
import java.util.Collection;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
public final class CollectionUtils {
private CollectionUtils() {
// This utility class is not publicly instantiable.
}
public static <E> ArrayList<E> arrayAsList(final E[] array, final int start, final int end) {
if (array == null) {
throw new NullPointerException();
}
@Nonnull
public static <E> ArrayList<E> arrayAsList(@Nonnull final E[] array, final int start,
final int end) {
if (start < 0 || start > end || end > array.length) {
throw new IllegalArgumentException();
}
@ -44,7 +46,7 @@ public final class CollectionUtils {
* @param c Collection to test.
* @return Whether c contains no elements.
*/
public static boolean isNullOrEmpty(final Collection<?> c) {
public static boolean isNullOrEmpty(@Nullable final Collection<?> c) {
return c == null || c.isEmpty();
}
}

1
tests/src/com/android/inputmethod/latin/utils/CollectionUtilsTests.java
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@ -51,5 +51,4 @@ public class CollectionUtilsTests extends AndroidTestCase {
assertTrue(CollectionUtils.isNullOrEmpty(Collections.EMPTY_SET));
assertFalse(CollectionUtils.isNullOrEmpty(Collections.singleton("Not empty")));
}
}