SquirrelJME/SquirrelJME

// -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
// ---------------------------------------------------------------------------
// SquirrelJME
//     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
// ---------------------------------------------------------------------------
// SquirrelJME is under the Mozilla Public License Version 2.0.
// See license.mkd for licensing and copyright information.
// ---------------------------------------------------------------------------

package java.util;

/**
 * This represents a single entry within the bucket map.
 *
 * @param <K> The key type.
 * @param <V> The value type.
 * @since 2018/10/07
 */
final class __BucketMapEntry__<K, V>
    implements Map.Entry<K, V>
{
    /** The key. */
    final K _key;
    
    /** The key hashcode. */
    final int _keyhash;
    
    /** The value here. */
    V _value;        
    
    /**
     * Initializes the entry.
     *
     * @param __k The key.
     * @since 2018/10/08
     */
    __BucketMapEntry__(K __k)
    {
        this._key = __k;
        this._keyhash = (__k == null ? 0 : __k.hashCode());
    }
    
    /**
     * {@inheritDoc}
     * @since 2018/10/08
     */
    @Override
    public final boolean equals(Object __o)
    {
        if (__o == this)
            return true;
        
        if (!(__o instanceof Map.Entry))
            return false;
        
        Map.Entry<?, ?> o = (Map.Entry<?, ?>)__o;
        return Objects.equals(this._key, o.getKey()) &&
            Objects.equals(this._value, o.getValue());
    }
    
    /**
     * {@inheritDoc}
     * @since 2018/10/08
     */
    @Override
    public final K getKey()
    {
        return this._key;
    }
    
    /**
     * {@inheritDoc}
     * @since 2018/10/08
     */
    @Override
    public final V getValue()
    {
        return this._value;
    }
    
    /**
     * {@inheritDoc}
     * @since 2018/10/08
     */
    @Override
    public final int hashCode()
    {
        V value = this._value;
        return this._keyhash ^ (value == null ? 0 : value.hashCode());
    }
    
    /**
     * {@inheritDoc}
     * @since 2018/10/08
     */
    @Override
    public final V setValue(V __v)
    {
        V rv = this._value;
        this._value = __v;
        return rv;
    }
}