/*

 * Copyright (C) 2012 David Anderson

 *

 * This file is part of JITCraft.

 *

 * JITCraft is free software: you can redistribute it and/or modify it under

 * the terms of the GNU General Public License as published by the Free

 * Software Foundation, either version 3 of the License, or (at your option)

 * any later version.

 * 

 * Foobar is distributed in the hope that it will be useful, but WITHOUT ANY

 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License along with

 * JITCraft. If not, see http://www.gnu.org/licenses/.

 */

#include "Reference.h"

#include "Zone.h"

#include "Array.h"

#include "Structures.h"

#include "Heap-inl.h"

using namespace ke;

Reference *

Reference::NewStack(Zone *zone, void *location, Heap::Tenure tenure)

{

    Local<Reference> ref(zone, Reference::cast(zone->allocate(MapKind_Reference, sizeof(Reference), tenure)));

    if (!ref)

        return NULL;

    ref->location_ = location;

    ref->base_ = NULL;

    return ref;

}

Reference *

Reference::NewStack(Zone *zone, const LocalSlot &slot, Heap::Tenure tenure)

{

    Local<Reference> ref(zone, Reference::cast(zone->allocate(MapKind_Reference, sizeof(Reference), tenure)));

    if (!ref)

        return NULL;

    ref->location_ = &ref->slot_;

    ref->slot_ = slot;

    ref->base_ = NULL;

    return ref;

}

Reference *

Reference::NewArray(Zone *zone, Handle<Array> base, size_t index, Heap::Tenure tenure)

{

    Local<Reference> ref(zone, Reference::cast(zone->allocate(MapKind_Reference, sizeof(Reference), tenure)));

    if (!ref)

        return NULL;

    ref->location_ = base->slotPtr(index);

    ref->base_ = base;

    return ref;

}

Reference *

Reference::NewField(Zone *zone, Handle<Struct> obj, size_t index, Heap::Tenure tenure)

{

    Local<Reference> ref(zone, Reference::cast(zone->allocate(MapKind_Reference, sizeof(Reference), tenure)));

    if (!ref)

        return NULL;

    Descriptor *desc = Descriptor::cast(obj->map()->type()->fields()->at(index));

    ref->location_ = obj->ref(desc);

    ref->base_ = obj;

    return ref;

}