diff options
Diffstat (limited to 'guava/src/com/google/common/collect/EmptyImmutableBiMap.java')
-rw-r--r-- | guava/src/com/google/common/collect/EmptyImmutableBiMap.java | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/guava/src/com/google/common/collect/EmptyImmutableBiMap.java b/guava/src/com/google/common/collect/EmptyImmutableBiMap.java deleted file mode 100644 index 5b862b3..0000000 --- a/guava/src/com/google/common/collect/EmptyImmutableBiMap.java +++ /dev/null @@ -1,77 +0,0 @@ -/* - * 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; - -import javax.annotation.Nullable; - -/** - * 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 public ImmutableBiMap<Object, Object> inverse() { - return this; - } - - @Override - public int size() { - return 0; - } - - @Override - public boolean isEmpty() { - return true; - } - - @Override - public Object get(@Nullable Object key) { - return null; - } - - @Override - public ImmutableSet<Entry<Object, Object>> entrySet() { - return ImmutableSet.of(); - } - - @Override - ImmutableSet<Entry<Object, Object>> createEntrySet() { - throw new AssertionError("should never be called"); - } - - @Override - public ImmutableSet<Object> keySet() { - return ImmutableSet.of(); - } - - @Override - boolean isPartialView() { - return false; - } - - Object readResolve() { - return INSTANCE; // preserve singleton property - } -} |