60 lines
1.9 KiB
Java
60 lines
1.9 KiB
Java
package com.google.common.base;
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import com.google.common.annotations.GwtCompatible;
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import java.io.Serializable;
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import java.util.Iterator;
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import javax.annotation.Nullable;
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@GwtCompatible(
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serializable = true
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)
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final class PairwiseEquivalence<T> extends Equivalence<Iterable<T>> implements Serializable {
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final Equivalence<? super T> elementEquivalence;
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private static final long serialVersionUID = 1L;
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PairwiseEquivalence(Equivalence<? super T> elementEquivalence) {
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this.elementEquivalence = (Equivalence)Preconditions.checkNotNull(elementEquivalence);
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}
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protected boolean doEquivalent(Iterable<T> iterableA, Iterable<T> iterableB) {
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Iterator<T> iteratorA = iterableA.iterator();
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Iterator iteratorB = iterableB.iterator();
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while(iteratorA.hasNext() && iteratorB.hasNext()) {
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if (!this.elementEquivalence.equivalent(iteratorA.next(), iteratorB.next())) {
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return false;
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}
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}
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return !iteratorA.hasNext() && !iteratorB.hasNext();
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}
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protected int doHash(Iterable<T> iterable) {
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int hash = 78721;
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Object element;
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for(Iterator i$ = iterable.iterator(); i$.hasNext(); hash = hash * 24943 + this.elementEquivalence.hash(element)) {
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element = i$.next();
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}
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return hash;
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}
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public boolean equals(@Nullable Object object) {
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if (object instanceof PairwiseEquivalence) {
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PairwiseEquivalence<?> that = (PairwiseEquivalence)object;
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return this.elementEquivalence.equals(that.elementEquivalence);
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} else {
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return false;
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}
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}
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public int hashCode() {
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return this.elementEquivalence.hashCode() ^ 1185147655;
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}
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public String toString() {
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String var1 = String.valueOf(String.valueOf(this.elementEquivalence));
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return (new StringBuilder(11 + var1.length())).append(var1).append(".pairwise()").toString();
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}
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}
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