1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/jitcraft/Array.cpp	Sat Jun 30 19:38:53 2012 -0700
     1.3 @@ -0,0 +1,68 @@
     1.4 +/*
     1.5 + * Copyright (C) 2012 David Anderson
     1.6 + *
     1.7 + * This file is part of JITCraft.
     1.8 + *
     1.9 + * JITCraft is free software: you can redistribute it and/or modify it under
    1.10 + * the terms of the GNU General Public License as published by the Free
    1.11 + * Software Foundation, either version 3 of the License, or (at your option)
    1.12 + * any later version.
    1.13 + * 
    1.14 + * Foobar is distributed in the hope that it will be useful, but WITHOUT ANY
    1.15 + * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    1.16 + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License along with
    1.19 + * JITCraft. If not, see http://www.gnu.org/licenses/.
    1.20 + */
    1.21 +#include "Array.h"
    1.22 +#include "Heap.h"
    1.23 +#include "Zone.h"
    1.24 +#include "Heap-inl.h"
    1.25 +
    1.26 +using namespace jc;
    1.27 +
    1.28 +ArrayMap *
    1.29 +ArrayMap::New(Zone *zone, Type *type, ArrayMap *contained)
    1.30 +{
    1.31 +    // :TODO: use Local
    1.32 +    Map *obj = zone->allocateMap(MapKind_Array, sizeof(ArrayMap), MapKind_MetaArray);
    1.33 +    if (!obj)
    1.34 +        return NULL;
    1.35 +
    1.36 +    ArrayMap *map = ArrayMap::cast(obj);
    1.37 +    map->init(type, contained);
    1.38 +    return map;
    1.39 +}
    1.40 +
    1.41 +static inline size_t
    1.42 +SizeFor(Type *type, unsigned elements)
    1.43 +{
    1.44 +    if (type->levels() > 1)
    1.45 +        return sizeof(Array) + elements * sizeof(jc::Object *);
    1.46 +    if (type->contained()->isInt())
    1.47 +        return sizeof(Array) + elements * sizeof(int);
    1.48 +    assert(type->contained()->isFloat());
    1.49 +    return sizeof(Array) + elements * sizeof(float);
    1.50 +}
    1.51 +
    1.52 +void
    1.53 +Array::init(uint32 nelements)
    1.54 +{
    1.55 +    WRITE_FIELD(nelements, nelements);
    1.56 +    WRITE_FIELD(elements, VoidPtr(this + 1));
    1.57 +}
    1.58 +
    1.59 +Array *
    1.60 +Array::New(Zone *zone, ArrayMap *map, uint32 elements, Heap::Tenure tenure)
    1.61 +{
    1.62 +    // :TODO: handles
    1.63 +    size_t bytes = SizeFor(map->type(), elements);
    1.64 +    Object *obj = zone->allocate(map, bytes, tenure);
    1.65 +    if (!obj)
    1.66 +        return NULL;
    1.67 +
    1.68 +    Array *array = Array::cast(obj);
    1.69 +    array->init(elements);
    1.70 +    return Array::cast(obj);
    1.71 +}