/*

* Copyright (c) Facebook, Inc. and its affiliates.

*

* This source code is licensed under the MIT license found in the

* LICENSE file in the root directory of this source tree.

*/

#include "hermes/VM/JSDataView.h"

#include "hermes/VM/BuildMetadata.h"

#include "llvh/Support/Debug.h"

#define DEBUG_TYPE "serialize"

namespace hermes {

namespace vm {

ObjectVTable JSDataView::vt{

VTable(CellKind::DataViewKind, cellSize<JSDataView>()),

JSDataView::_getOwnIndexedRangeImpl,

JSDataView::_haveOwnIndexedImpl,

JSDataView::_getOwnIndexedPropertyFlagsImpl,

JSDataView::_getOwnIndexedImpl,

JSDataView::_setOwnIndexedImpl,

JSDataView::_deleteOwnIndexedImpl,

JSDataView::_checkAllOwnIndexedImpl,

};

void DataViewBuildMeta(const GCCell *cell, Metadata::Builder &mb) {

mb.addJSObjectOverlapSlots(JSObject::numOverlapSlots<JSDataView>());

ObjectBuildMeta(cell, mb);

const auto *self = static_cast<const JSDataView *>(cell);

mb.addField("buffer", &self->buffer_);

}

#ifdef HERMESVM_SERIALIZE

JSDataView::JSDataView(Deserializer &d) : JSObject(d, &vt.base) {

d.readRelocation(&buffer_, RelocationKind::GCPointer);

offset_ = d.readInt<size_type>();

length_ = d.readInt<size_type>();

}

void DataViewSerialize(Serializer &s, const GCCell *cell) {

auto *self = vmcast<const JSDataView>(cell);

JSObject::serializeObjectImpl(

s, cell, JSObject::numOverlapSlots<JSDataView>());

s.writeRelocation(self->buffer_.get(s.getRuntime()));

s.writeInt<JSDataView::size_type>(self->offset_);

s.writeInt<JSDataView::size_type>(self->length_);

s.endObject(cell);

}

void DataViewDeserialize(Deserializer &d, CellKind kind) {

assert(kind == CellKind::DataViewKind && "Expected DataView");

void *mem = d.getRuntime()->alloc(cellSize<JSDataView>());

auto *cell = new (mem) JSDataView(d);

d.endObject(cell);

}

#endif

PseudoHandle<JSDataView> JSDataView::create(

Runtime *runtime,

Handle<JSObject> prototype) {

JSObjectAlloc<JSDataView> mem{runtime};

return mem.initToPseudoHandle(new (mem) JSDataView(

runtime,

*prototype,

runtime->getHiddenClassForPrototypeRaw(

*prototype,

numOverlapSlots<JSDataView>() + ANONYMOUS_PROPERTY_SLOTS)));

}

JSDataView::JSDataView(Runtime *runtime, JSObject *parent, HiddenClass *clazz)

: JSObject(runtime, &vt.base, parent, clazz),

buffer_(nullptr),

offset_(0),

length_(0) {}

} // namespace vm

} // namespace hermes