112 lines
3.5 KiB
Java
112 lines
3.5 KiB
Java
package com.google.common.graph;
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import com.google.common.base.Preconditions;
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import com.google.common.collect.UnmodifiableIterator;
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import java.util.AbstractSet;
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import java.util.Iterator;
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import java.util.Map;
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import java.util.Set;
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/* JADX INFO: Access modifiers changed from: package-private */
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/* loaded from: classes2.dex */
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public class MapIteratorCache<K, V> {
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private final Map<K, V> backingMap;
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private volatile transient Map.Entry<K, V> cacheEntry;
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/* JADX INFO: Access modifiers changed from: package-private */
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public MapIteratorCache(Map<K, V> map) {
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this.backingMap = (Map) Preconditions.checkNotNull(map);
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}
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public final V put(K k, V v) {
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clearCache();
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return this.backingMap.put(k, v);
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}
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public final V remove(Object obj) {
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clearCache();
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return this.backingMap.remove(obj);
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}
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public final void clear() {
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clearCache();
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this.backingMap.clear();
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}
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public V get(Object obj) {
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V ifCached = getIfCached(obj);
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return ifCached != null ? ifCached : getWithoutCaching(obj);
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}
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public final V getWithoutCaching(Object obj) {
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return this.backingMap.get(obj);
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}
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public final boolean containsKey(Object obj) {
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return getIfCached(obj) != null || this.backingMap.containsKey(obj);
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}
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/* renamed from: com.google.common.graph.MapIteratorCache$1, reason: invalid class name */
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/* loaded from: classes2.dex */
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class AnonymousClass1 extends AbstractSet<K> {
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final MapIteratorCache this$0;
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AnonymousClass1(MapIteratorCache mapIteratorCache) {
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this.this$0 = mapIteratorCache;
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}
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@Override // java.util.AbstractCollection, java.util.Collection, java.lang.Iterable, java.util.Set
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public UnmodifiableIterator<K> iterator() {
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return new UnmodifiableIterator<K>(this, this.this$0.backingMap.entrySet().iterator()) { // from class: com.google.common.graph.MapIteratorCache.1.1
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final AnonymousClass1 this$1;
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final Iterator val$entryIterator;
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{
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this.this$1 = this;
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this.val$entryIterator = r2;
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}
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@Override // java.util.Iterator
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public boolean hasNext() {
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return this.val$entryIterator.hasNext();
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}
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@Override // java.util.Iterator
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public K next() {
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Map.Entry entry = (Map.Entry) this.val$entryIterator.next();
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this.this$1.this$0.cacheEntry = entry;
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return (K) entry.getKey();
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}
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};
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}
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@Override // java.util.AbstractCollection, java.util.Collection, java.util.Set
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public int size() {
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return this.this$0.backingMap.size();
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}
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@Override // java.util.AbstractCollection, java.util.Collection, java.util.Set
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public boolean contains(Object obj) {
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return this.this$0.containsKey(obj);
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}
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}
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public final Set<K> unmodifiableKeySet() {
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return new AnonymousClass1(this);
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}
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/* JADX INFO: Access modifiers changed from: protected */
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public V getIfCached(Object obj) {
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Map.Entry<K, V> entry = this.cacheEntry;
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if (entry == null || entry.getKey() != obj) {
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return null;
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}
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return entry.getValue();
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}
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/* JADX INFO: Access modifiers changed from: protected */
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public void clearCache() {
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this.cacheEntry = null;
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}
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}
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