/*

  * 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;

 }