/*

  * 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 "Array.h"

 #include "Heap.h"

 #include "Zone.h"

 #include "Heap-inl.h"

 using namespace jc;

 ArrayMap *

 ArrayMap::New(Zone *zone, Type *type, ArrayMap *contained)

 {

     // :TODO: use Local

     Map *obj = zone->allocateMap(MapKind_Array, sizeof(ArrayMap), MapKind_MetaArray);

     if (!obj)

         return NULL;

     ArrayMap *map = ArrayMap::cast(obj);

     map->init(type, contained);

     return map;

 }

 static inline size_t

 SizeFor(Type *type, unsigned elements)

 {

     if (type->levels() > 1)

         return sizeof(Array) + elements * sizeof(jc::Object *);

     if (type->contained()->isInt())

         return sizeof(Array) + elements * sizeof(int);

     assert(type->contained()->isFloat());

     return sizeof(Array) + elements * sizeof(float);

 }

 void

 Array::init(uint32 nelements)

 {

     WRITE_FIELD(nelements, nelements);

     WRITE_FIELD(elements, VoidPtr(this + 1));

 }

 Array *

 Array::New(Zone *zone, ArrayMap *map, uint32 elements, Heap::Tenure tenure)

 {

     // :TODO: handles

     size_t bytes = SizeFor(map->type(), elements);

     Object *obj = zone->allocate(map, bytes, tenure);

     if (!obj)

         return NULL;

     Array *array = Array::cast(obj);

     array->init(elements);

     return Array::cast(obj);

 }