111 lines
3.2 KiB
Java
111 lines
3.2 KiB
Java
package com.google.common.collect;
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import com.google.common.base.Equivalence;
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import com.google.common.base.Function;
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import com.google.common.base.Preconditions;
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import com.google.common.collect.MapMaker;
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/* loaded from: classes2.dex */
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public final class Interners {
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private Interners() {
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}
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/* loaded from: classes2.dex */
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public static class InternerBuilder {
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private final MapMaker mapMaker;
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private boolean strong;
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private InternerBuilder() {
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this.mapMaker = new MapMaker();
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this.strong = true;
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}
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public InternerBuilder concurrencyLevel(int i) {
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this.mapMaker.concurrencyLevel(i);
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return this;
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}
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public <E> Interner<E> build() {
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if (!this.strong) {
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this.mapMaker.weakKeys();
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}
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return new InternerImpl(this.mapMaker);
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}
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public InternerBuilder weak() {
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this.strong = false;
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return this;
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}
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public InternerBuilder strong() {
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this.strong = true;
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return this;
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}
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}
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public static InternerBuilder newBuilder() {
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return new InternerBuilder();
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}
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public static <E> Interner<E> newStrongInterner() {
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return newBuilder().strong().build();
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}
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public static <E> Interner<E> newWeakInterner() {
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return newBuilder().weak().build();
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}
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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 static final class InternerImpl<E> implements Interner<E> {
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final MapMakerInternalMap<E, MapMaker.Dummy, ?, ?> map;
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private InternerImpl(MapMaker mapMaker) {
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this.map = MapMakerInternalMap.createWithDummyValues(mapMaker.keyEquivalence(Equivalence.equals()));
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}
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/* JADX WARN: Type inference failed for: r0v1, types: [com.google.common.collect.MapMakerInternalMap$InternalEntry] */
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@Override // com.google.common.collect.Interner
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public final E intern(E e) {
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E e2;
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do {
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?? entry = this.map.getEntry(e);
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if (entry != 0 && (e2 = (E) entry.getKey()) != null) {
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return e2;
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}
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} while (this.map.putIfAbsent(e, MapMaker.Dummy.VALUE) != null);
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return e;
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}
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}
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public static <E> Function<E, E> asFunction(Interner<E> interner) {
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return new InternerFunction((Interner) Preconditions.checkNotNull(interner));
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}
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/* loaded from: classes2.dex */
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static class InternerFunction<E> implements Function<E, E> {
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private final Interner<E> interner;
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public InternerFunction(Interner<E> interner) {
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this.interner = interner;
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}
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@Override // com.google.common.base.Function
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public E apply(E e) {
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return this.interner.intern(e);
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}
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public int hashCode() {
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return this.interner.hashCode();
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}
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@Override // com.google.common.base.Function
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public boolean equals(Object obj) {
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if (obj instanceof InternerFunction) {
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return this.interner.equals(((InternerFunction) obj).interner);
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}
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return false;
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}
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}
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}
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