dvander@12: /*
dvander@12:  * Copyright (C) 2012 David Anderson
dvander@12:  *
dvander@12:  * This file is part of JITCraft.
dvander@12:  *
dvander@12:  * JITCraft is free software: you can redistribute it and/or modify it under
dvander@12:  * the terms of the GNU General Public License as published by the Free
dvander@12:  * Software Foundation, either version 3 of the License, or (at your option)
dvander@12:  * any later version.
dvander@12:  * 
dvander@12:  * Foobar is distributed in the hope that it will be useful, but WITHOUT ANY
dvander@12:  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
dvander@12:  * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
dvander@12:  *
dvander@12:  * You should have received a copy of the GNU General Public License along with
dvander@12:  * JITCraft. If not, see http://www.gnu.org/licenses/.
dvander@12:  */
dvander@12: #include "Array.h"
dvander@12: #include "Heap.h"
dvander@12: #include "Zone.h"
dvander@12: #include "Heap-inl.h"
dvander@12: 
dvander@59: using namespace ke;
dvander@12: 
dvander@12: ArrayMap *
dvander@27: ArrayMap::New(Zone *zone, Handle<Type> type, Handle<ArrayMap> contained)
dvander@12: {
dvander@31:     Local<Map> obj(zone, zone->allocateMap(MapKind_Array, sizeof(ArrayMap), MapKind_MetaArray));
dvander@12:     if (!obj)
dvander@12:         return NULL;
dvander@12: 
dvander@31:     Local<ArrayMap> map(zone, ArrayMap::cast(obj));
dvander@13:     map->type_ = type;
dvander@13:     map->contained_ = contained;
dvander@12:     return map;
dvander@12: }
dvander@12: 
dvander@12: static inline size_t
dvander@12: SizeFor(Type *type, unsigned elements)
dvander@12: {
dvander@12:     if (type->levels() > 1)
dvander@59:         return sizeof(Array) + elements * sizeof(ke::Object *);
dvander@20:     if (type->contained()->isInt32())
dvander@12:         return sizeof(Array) + elements * sizeof(int);
dvander@21:     if (type->contained()->primitive() == PrimitiveType_Char)
dvander@21:         return sizeof(Array) + elements * sizeof(char);
dvander@12:     assert(type->contained()->isFloat());
dvander@53:     return elements * sizeof(float);
dvander@12: }
dvander@12: 
dvander@12: Array *
dvander@27: Array::New(Zone *zone, Handle<ArrayMap> map, uint32 elements, Heap::Tenure tenure)
dvander@12: {
dvander@53:     size_t elementBytes = SizeFor(map->type(), elements);
dvander@53:     size_t bytes = sizeof(Array) + elementBytes;
dvander@31:     Local<Array> array(zone, Array::cast(zone->allocate(map, bytes, tenure)));
dvander@31:     if (!array)
dvander@12:         return NULL;
dvander@12: 
dvander@13:     array->nelements_ = elements;
dvander@66:     array->elements_ = (Array *)array + 1;
dvander@53:     memset(array->elements_, 0, elementBytes);
dvander@31:     return array;
dvander@12: }
dvander@31: 
dvander@65: Array *
dvander@65: Array::NewExternal(Zone *zone, Handle<ArrayMap> map, uint32 nelements, void *buffer,
dvander@65:                    Heap::Tenure tenure)
dvander@65: {
dvander@65:     Local<Array> array(zone, Array::cast(zone->allocate(map, sizeof(Array), tenure)));
dvander@65:     if (!array)
dvander@65:         return NULL;
dvander@65: 
dvander@65:     array->nelements_ = nelements;
dvander@65:     array->elements_ = buffer;
dvander@65:     return array;
dvander@65: }