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    package com.google.common.collect;

import com.google.common.base.Preconditions;
import java.util.NoSuchElementException;
import javax.annotation.CheckForNull;

@ElementTypesAreNonnullByDefault
public abstract class AbstractIterator<T> extends UnmodifiableIterator<T> {
    @CheckForNull
    private T next;
    private State state = State.NOT_READY;

    private enum State {
        READY,
        NOT_READY,
        DONE,
        FAILED
    }

    /* access modifiers changed from: protected */
    @CheckForNull
    public abstract T computeNext();

    protected AbstractIterator() {
    }

    /* access modifiers changed from: protected */
    @CheckForNull
    public final T endOfData() {
        this.state = State.DONE;
        return null;
    }

    /* renamed from: com.google.common.collect.AbstractIterator$1  reason: invalid class name */
    static /* synthetic */ class AnonymousClass1 {
        static final /* synthetic */ int[] $SwitchMap$com$google$common$collect$AbstractIterator$State;

        /* JADX WARNING: Can't wrap try/catch for region: R(6:0|1|2|3|4|6) */
        /* JADX WARNING: Code restructure failed: missing block: B:7:?, code lost:
            return;
         */
        /* JADX WARNING: Failed to process nested try/catch */
        /* JADX WARNING: Missing exception handler attribute for start block: B:3:0x0012 */
        static {
            /*
                com.google.common.collect.AbstractIterator$State[] r0 = com.google.common.collect.AbstractIterator.State.values()
                int r0 = r0.length
                int[] r0 = new int[r0]
                $SwitchMap$com$google$common$collect$AbstractIterator$State = r0
                com.google.common.collect.AbstractIterator$State r1 = com.google.common.collect.AbstractIterator.State.DONE     // Catch:{ NoSuchFieldError -> 0x0012 }
                int r1 = r1.ordinal()     // Catch:{ NoSuchFieldError -> 0x0012 }
                r2 = 1
                r0[r1] = r2     // Catch:{ NoSuchFieldError -> 0x0012 }
            L_0x0012:
                int[] r0 = $SwitchMap$com$google$common$collect$AbstractIterator$State     // Catch:{ NoSuchFieldError -> 0x001d }
                com.google.common.collect.AbstractIterator$State r1 = com.google.common.collect.AbstractIterator.State.READY     // Catch:{ NoSuchFieldError -> 0x001d }
                int r1 = r1.ordinal()     // Catch:{ NoSuchFieldError -> 0x001d }
                r2 = 2
                r0[r1] = r2     // Catch:{ NoSuchFieldError -> 0x001d }
            L_0x001d:
                return
            */
            throw new UnsupportedOperationException("Method not decompiled: com.google.common.collect.AbstractIterator.AnonymousClass1.<clinit>():void");
        }
    }

    public final boolean hasNext() {
        Preconditions.checkState(this.state != State.FAILED);
        int i = AnonymousClass1.$SwitchMap$com$google$common$collect$AbstractIterator$State[this.state.ordinal()];
        if (i == 1) {
            return false;
        }
        if (i != 2) {
            return tryToComputeNext();
        }
        return true;
    }

    private boolean tryToComputeNext() {
        this.state = State.FAILED;
        this.next = computeNext();
        if (this.state == State.DONE) {
            return false;
        }
        this.state = State.READY;
        return true;
    }

    @ParametricNullness
    public final T next() {
        if (hasNext()) {
            this.state = State.NOT_READY;
            T uncheckedCastNullableTToT = NullnessCasts.uncheckedCastNullableTToT(this.next);
            this.next = null;
            return uncheckedCastNullableTToT;
        }
        throw new NoSuchElementException();
    }

    @ParametricNullness
    public final T peek() {
        if (hasNext()) {
            return NullnessCasts.uncheckedCastNullableTToT(this.next);
        }
        throw new NoSuchElementException();
    }
}
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