diff -r a350c2cc736a -r 75e385f68b7e jitcraft/Array.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jitcraft/Array.cpp	Sat Jun 30 19:38:53 2012 -0700
@@ -0,0 +1,68 @@
+/*
+ * 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);
+}