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/* Copyright (c) 2005-2014 Rexx Language Association. All rights reserved.    */
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#include "RexxCore.h"
#include "ProtectedObject.hpp"
#include "Activity.hpp"
#include "ArrayClass.hpp"
#include "ActivityManager.hpp"


/**
 * Default contstructor for a ProtectedBase object.
 */
ProtectedBase::ProtectedBase()
{
    // save the activity
    activity = ActivityManager::currentActivity;

    // it would be better to have the activity class do this, but because
    // we're doing this with inline methods, we run into a bit of a
    // circular reference problem

    // NOTE:  ProtectedObject gets used in a few places during image
    // restore before we have a valid activity.  If we don't have
    // one, then just assume this will be safe.
    if (activity != OREF_NULL)
    {
        next = activity->protectedObjects;
        activity->protectedObjects = this;
    }
}


/**
 * Create a ProtectedBase object with an explicitly specified activity.
 *
 * @param a      The current activity.
 */
ProtectedBase::ProtectedBase(Activity *a) : activity(a)
{
    // it would be better to have the activity class do this, but because
    // we're doing this with inline methods, we run into a bit of a
    // circular reference problem

    // NOTE:  ProtectedObject gets used in a few places during image
    // restore before we have a valid activity.  If we don't have
    // one, then just assume this will be safe.
    if (activity != OREF_NULL)
    {
        next = activity->protectedObjects;
        activity->protectedObjects = this;
    }
}


/**
 * Destructor for a ProtectedBase object.
 */
ProtectedBase::~ProtectedBase()
{
    // remove ourselves from the list.

    // NOTE:  ProtectedObject gets used in a few places during image
    // restore before we have a valid activity.  If we don't have
    // one, then just assume this will be safe.
    if (activity != OREF_NULL)
    {
        activity->protectedObjects = next;
    }
}


/**
 * Add an object to a protected set.
 *
 * @param o      The new object.
 */
void ProtectedSet::add(RexxInternalObject *o)
{
    // first one we've added?
    if (protectedObject == OREF_NULL)
    {
        protectedObject = new_array();
    }
    ArrayClass *saveTable = (ArrayClass *)protectedObject;
    saveTable->append(o);
}