1 files changed, 87 insertions, 0 deletions
diff --git a/js/src/vm/ArrayObject-inl.h b/js/src/vm/ArrayObject-inl.h
new file mode 100644
index 0000000000..193679fa9b
--- /dev/null
+++ b/js/src/vm/ArrayObject-inl.h
@@ -0,0 +1,87 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef vm_ArrayObject_inl_h
+#define vm_ArrayObject_inl_h
+
+#include "vm/ArrayObject.h"
+
+#include "gc/Allocator.h"
+#include "gc/GCProbes.h"
+#include "vm/StringType.h"
+
+#include "vm/JSObject-inl.h"
+#include "vm/ObjectOperations-inl.h"  // js::GetElement
+
+namespace js {
+
+/* static */ inline ArrayObject* ArrayObject::createArrayInternal(
+    JSContext* cx, gc::AllocKind kind, gc::InitialHeap heap, HandleShape shape,
+    HandleObjectGroup group, AutoSetNewObjectMetadata&) {
+  const JSClass* clasp = group->clasp();
+  MOZ_ASSERT(shape && group);
+  MOZ_ASSERT(clasp == shape->getObjectClass());
+  MOZ_ASSERT(clasp == &ArrayObject::class_);
+  MOZ_ASSERT_IF(clasp->hasFinalize(), heap == gc::TenuredHeap);
+
+  // Arrays can use their fixed slots to store elements, so can't have shapes
+  // which allow named properties to be stored in the fixed slots.
+  MOZ_ASSERT(shape->numFixedSlots() == 0);
+
+  size_t nDynamicSlots = calculateDynamicSlots(0, shape->slotSpan(), clasp);
+  JSObject* obj = js::AllocateObject(cx, kind, nDynamicSlots, heap, clasp);
+  if (!obj) {
+    return nullptr;
+  }
+
+  ArrayObject* aobj = static_cast<ArrayObject*>(obj);
+  aobj->initGroup(group);
+  aobj->initShape(shape);
+  // NOTE: Dynamic slots are created internally by Allocate<JSObject>.
+  if (!nDynamicSlots) {
+    aobj->initEmptyDynamicSlots();
+  }
+
+  MOZ_ASSERT(clasp->shouldDelayMetadataBuilder());
+  cx->realm()->setObjectPendingMetadata(cx, aobj);
+
+  return aobj;
+}
+
+/* static */ inline ArrayObject* ArrayObject::finishCreateArray(
+    ArrayObject* obj, HandleShape shape, AutoSetNewObjectMetadata& metadata) {
+  size_t span = shape->slotSpan();
+  if (span) {
+    obj->initializeSlotRange(0, span);
+  }
+
+  gc::gcprobes::CreateObject(obj);
+
+  return obj;
+}
+
+/* static */ inline ArrayObject* ArrayObject::createArray(
+    JSContext* cx, gc::AllocKind kind, gc::InitialHeap heap, HandleShape shape,
+    HandleObjectGroup group, uint32_t length,
+    AutoSetNewObjectMetadata& metadata) {
+  ArrayObject* obj =
+      createArrayInternal(cx, kind, heap, shape, group, metadata);
+  if (!obj) {
+    return nullptr;
+  }
+
+  uint32_t capacity =
+      gc::GetGCKindSlots(kind) - ObjectElements::VALUES_PER_HEADER;
+
+  obj->setFixedElements();
+  new (obj->getElementsHeader()) ObjectElements(capacity, length);
+
+  return finishCreateArray(obj, shape, metadata);
+}
+
+}  // namespace js
+
+#endif  // vm_ArrayObject_inl_h