diff --git a/infer/models/java/src/android/text/TextUtils.java b/infer/models/java/src/android/text/TextUtils.java new file mode 100644 index 000000000..00033653f --- /dev/null +++ b/infer/models/java/src/android/text/TextUtils.java @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2006 The Android Open Source Project + * + * 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. + * + * Partial copy of the file for static analysis purposes + */ +package android.text; + +public class TextUtils { + public static boolean isEmpty(CharSequence str) { + if (str == null || str.length() == 0) { + return true; + } else { + return false; + } + } +} diff --git a/infer/tests/codetoanalyze/java/infer/NullPointerExceptions.java b/infer/tests/codetoanalyze/java/infer/NullPointerExceptions.java index 2d04b42fa..abe3670db 100644 --- a/infer/tests/codetoanalyze/java/infer/NullPointerExceptions.java +++ b/infer/tests/codetoanalyze/java/infer/NullPointerExceptions.java @@ -9,6 +9,7 @@ import android.content.ContentResolver; import android.content.Context; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; +import android.text.TextUtils; import com.google.common.base.Preconditions; import com.google.common.collect.ImmutableList; @@ -329,4 +330,11 @@ public class NullPointerExceptions { int n = s.length(); } } + + void nullableNonNullStringAfterTextUtilsIsEmptyCheckShouldNotCauseNPE(@Nullable String str) { + if(!TextUtils.isEmpty(str)) { + str.length(); + } + } + }