Initial Jack import.

Change-Id: I953cf0a520195a7187d791b2885848ad0d5a9b43

1 files changed, 45 insertions, 0 deletions

diff --git a/guava/src/com/google/common/collect/EmptyImmutableBiMap.java b/guava/src/com/google/common/collect/EmptyImmutableBiMap.java
new file mode 100644
index 0000000..8839a07
--- /dev/null
+++ b/guava/src/com/google/common/collect/EmptyImmutableBiMap.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2008 The Guava 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 com.google.common.collect;
+
+import com.google.common.annotations.GwtCompatible;
+
+/**
+ * Bimap with no mappings.
+ *
+ * @author Jared Levy
+ */
+@GwtCompatible(emulated = true)
+@SuppressWarnings("serial") // uses writeReplace(), not default serialization
+final class EmptyImmutableBiMap extends ImmutableBiMap<Object, Object> {
+  static final EmptyImmutableBiMap INSTANCE = new EmptyImmutableBiMap();
+
+  private EmptyImmutableBiMap() {}
+
+  @Override ImmutableMap<Object, Object> delegate() {
+    return ImmutableMap.of();
+  }
+  @Override public ImmutableBiMap<Object, Object> inverse() {
+    return this;
+  }
+  @Override boolean isPartialView() {
+    return false;
+  }
+  Object readResolve() {
+    return INSTANCE; // preserve singleton property
+  }
+}