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// Burton Computer Corporation
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package org.javimmutable.collections.cursors;

import org.javimmutable.collections.Cursor;
import org.javimmutable.collections.common.IteratorAdaptor;

import javax.annotation.Nonnull;
import javax.annotation.concurrent.Immutable;
import java.util.Iterator;

/**
 * A Cursor containing exactly one value to be traversed.
 *
 * @param 
 */
@Immutable
public class SingleValueCursor
        extends AbstractStartCursor
{
    private final T value;

    private SingleValueCursor(T value)
    {
        this.value = value;
    }

    @Nonnull
    public static  SingleValueCursor of(V value)
    {
        return new SingleValueCursor(value);
    }

    @Nonnull
    @Override
    public Cursor next()
    {
        return new AbstractStartedCursor()
        {
            public T getValue()
            {
                return value;
            }
        };
    }

    @Override
    public Iterator iterator()
    {
        return IteratorAdaptor.of(this);
    }
}