diff options
Diffstat (limited to 'guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/ForwardingImmutableMap.java')
-rw-r--r-- | guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/ForwardingImmutableMap.java | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/ForwardingImmutableMap.java b/guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/ForwardingImmutableMap.java deleted file mode 100644 index 9ef0d96..0000000 --- a/guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/ForwardingImmutableMap.java +++ /dev/null @@ -1,125 +0,0 @@ -/* - * Copyright (C) 2009 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 static com.google.common.base.Preconditions.checkNotNull; - -import java.util.Collections; -import java.util.Map; -import java.util.Set; - -import javax.annotation.Nullable; - -/** - * GWT implementation of {@link ImmutableMap} that forwards to another map. - * - * @author Hayward Chan - */ -public abstract class ForwardingImmutableMap<K, V> extends ImmutableMap<K, V> { - - final transient Map<K, V> delegate; - - ForwardingImmutableMap(Map<? extends K, ? extends V> delegate) { - this.delegate = Collections.unmodifiableMap(delegate); - } - - @SuppressWarnings("unchecked") - ForwardingImmutableMap(Entry<? extends K, ? extends V>... entries) { - Map<K, V> delegate = Maps.newLinkedHashMap(); - for (Entry<? extends K, ? extends V> entry : entries) { - K key = checkNotNull(entry.getKey()); - V previous = delegate.put(key, checkNotNull(entry.getValue())); - if (previous != null) { - throw new IllegalArgumentException("duplicate key: " + key); - } - } - this.delegate = Collections.unmodifiableMap(delegate); - } - - boolean isPartialView() { - return false; - } - - public final boolean isEmpty() { - return delegate.isEmpty(); - } - - public final boolean containsKey(@Nullable Object key) { - return Maps.safeContainsKey(delegate, key); - } - - public final boolean containsValue(@Nullable Object value) { - return delegate.containsValue(value); - } - - public V get(@Nullable Object key) { - return (key == null) ? null : Maps.safeGet(delegate, key); - } - - @Override ImmutableSet<Entry<K, V>> createEntrySet() { - return ImmutableSet.unsafeDelegate( - new ForwardingSet<Entry<K, V>>() { - @Override protected Set<Entry<K, V>> delegate() { - return delegate.entrySet(); - } - @Override public boolean contains(Object object) { - if (object instanceof Entry<?, ?> - && ((Entry<?, ?>) object).getKey() == null) { - return false; - } - try { - return super.contains(object); - } catch (ClassCastException e) { - return false; - } - } - @Override public <T> T[] toArray(T[] array) { - T[] result = super.toArray(array); - if (size() < result.length) { - // It works around a GWT bug where elements after last is not - // properly null'ed. - result[size()] = null; - } - return result; - } - }); - } - - @Override ImmutableSet<K> createKeySet() { - return ImmutableSet.unsafeDelegate(delegate.keySet()); - } - - @Override ImmutableCollection<V> createValues() { - return ImmutableCollection.unsafeDelegate(delegate.values()); - } - - @Override public int size() { - return delegate.size(); - } - - @Override public boolean equals(@Nullable Object object) { - return delegate.equals(object); - } - - @Override public int hashCode() { - return delegate.hashCode(); - } - - @Override public String toString() { - return delegate.toString(); - } -} |