Initial commit 🎉

fbshipit-source-id: b6fc29740c6875d2e78953b8a7123890a67930f2
Co-authored-by: Sebastian McKenzie <sebmck@fb.com>
Co-authored-by: John Knox <jknox@fb.com>
Co-authored-by: Emil Sjölander <emilsj@fb.com>
Co-authored-by: Pritesh Nandgaonkar <prit91@fb.com>

android/plugins/inspector/ObjectTracker.java

@@ -0,0 +1,45 @@
+/*
+ *  Copyright (c) 2018-present, Facebook, Inc.
+ *
+ *  This source code is licensed under the MIT license found in the LICENSE
+ *  file in the root directory of this source tree.
+ *
+ */
+
+package com.facebook.sonar.plugins.inspector;
+
+import java.lang.ref.WeakReference;
+import java.util.HashMap;
+import java.util.Map;
+import javax.annotation.Nullable;
+
+class ObjectTracker {
+  private final Map<String, WeakReference<Object>> mObjects = new HashMap<>();
+
+  void put(String id, Object obj) {
+    mObjects.put(id, new WeakReference<>(obj));
+  }
+
+  @Nullable
+  Object get(String id) {
+    final WeakReference<Object> weakObj = mObjects.get(id);
+    if (weakObj == null) {
+      return null;
+    }
+
+    final Object obj = weakObj.get();
+    if (obj == null) {
+      mObjects.remove(id);
+    }
+
+    return obj;
+  }
+
+  void clear() {
+    mObjects.clear();
+  }
+
+  boolean contains(String id) {
+    return mObjects.containsKey(id);
+  }
+}