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 cc.squirreljme.jdwp.host;

import cc.squirreljme.jdwp.JDWPEventKind;
import cc.squirreljme.jdwp.host.trips.JDWPTripField;
import java.lang.ref.Reference;

/**
 * Tripping for fields.
 *
 * @since 2021/04/30
 */
final class __TripField__
    extends __TripBase__
    implements JDWPTripField
{
    /**
     * Initializes the trip.
     * 
     * @param __controller The controller.
     * @throws NullPointerException On null arguments.
     * @since 2021/04/30
     */
    __TripField__(Reference<JDWPHostController> __controller)
        throws NullPointerException
    {
        super(__controller);
    }
    
    /**
     * {@inheritDoc}
     * @since 2021/04/30
     */
    @Override
    public void field(Object __thread, Object __type, int __fieldDx,
        boolean __write, Object __instance, JDWPHostValue __jVal)
    {
        JDWPHostController controller = this.__controller();
        JDWPHostState state = controller.getState();
        
        // Make sure these are registered
        if (__type != null)
            state.items.put(__type);
        if (__instance != null)
            state.items.put(__instance);
        
        // Signal access or modification
        controller.signal(__thread,
            (__write ? JDWPEventKind.FIELD_MODIFICATION :
                JDWPEventKind.FIELD_ACCESS),
            __type, __fieldDx, __write, __instance, __jVal);
    }
}