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/* -*- 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/. */
#include "jsfriendapi.h"
#include "js/ArrayBuffer.h" // JS::NewArrayBuffer
#include "js/experimental/TypedData.h" // JS_GetArrayBufferView{Type,ByteLength,Data}, JS_GetObjectAsArrayBufferView, JS_GetObjectAs{{Ui,I}nt{8,16,32},Float{32,64}}Array, JS_IsArrayBufferViewObject, JS_NewDataView, JS_New{{Ui,I}nt{8,16,32},Float{32,64},Uint8Clamped}Array
#include "js/GlobalObject.h" // JS_NewGlobalObject
#include "js/PropertyAndElement.h" // JS_SetProperty
#include "js/ScalarType.h" // js::Scalar::Type
#include "jsapi-tests/tests.h"
#include "vm/ProxyObject.h"
#include "vm/Realm.h"
#include "vm/Uint8Clamped.h" // js::uint8_clamped_t
#include "vm/JSObject-inl.h"
#include "vm/Realm-inl.h"
#include "vm/TypedArrayObject-inl.h" // TypeIDOfType
using namespace js;
template <class ViewType>
static JSObject* Create(JSContext* cx, size_t len) {
return ViewType::create(cx, len).asObject();
}
template <>
JSObject* Create<JS::DataView>(JSContext* cx, size_t len) {
JS::Rooted<JSObject*> buffer(cx, JS::NewArrayBuffer(cx, len));
if (!buffer) {
return nullptr;
}
return JS_NewDataView(cx, buffer, 0, len);
}
template <class T>
struct InternalType {
using Type = uint8_t;
};
#define INT_TYPE(ExternalType, NativeType, Name) \
template <> \
struct InternalType<JS::TypedArray<js::Scalar::Name>> { \
using Type = NativeType; \
};
JS_FOR_EACH_TYPED_ARRAY(INT_TYPE)
#undef INT_TYPE
BEGIN_TEST(testArrayBufferView_type) {
CHECK((TestViewType<JS::TypedArray<Scalar::Uint8>, 7, 7>(cx)));
CHECK((TestViewType<JS::TypedArray<Scalar::Int8>, 33, 33>(cx)));
CHECK((TestViewType<JS::TypedArray<Scalar::Uint8Clamped>, 7, 7>(cx)));
CHECK((TestViewType<JS::TypedArray<Scalar::Uint16>, 3, 6>(cx)));
CHECK((TestViewType<JS::TypedArray<Scalar::Int16>, 17, 34>(cx)));
CHECK((TestViewType<JS::TypedArray<Scalar::Uint32>, 15, 60>(cx)));
CHECK((TestViewType<JS::TypedArray<Scalar::Int32>, 8, 32>(cx)));
CHECK((TestViewType<JS::TypedArray<Scalar::Float32>, 7, 28>(cx)));
CHECK((TestViewType<JS::TypedArray<Scalar::Float64>, 9, 72>(cx)));
CHECK((TestViewType<JS::DataView, 8, 8>(cx)));
return true;
}
template <class T>
struct ScalarTypeOf {
static constexpr js::Scalar::Type value = js::Scalar::MaxTypedArrayViewType;
};
template <js::Scalar::Type EType>
struct ScalarTypeOf<JS::TypedArray<EType>> {
static constexpr js::Scalar::Type value = EType;
};
template <class ViewType, uint32_t ExpectedLength, uint32_t ExpectedByteLength>
bool TestViewType(JSContext* cx) {
JS::Rooted<JSObject*> obj(cx, Create<ViewType>(cx, ExpectedLength));
CHECK(obj);
CHECK(JS_IsArrayBufferViewObject(obj));
CHECK(JS_GetArrayBufferViewByteLength(obj) == ExpectedByteLength);
{
JS::AutoCheckCannotGC nogc;
bool shared1;
JSObject* unwrapped = js::UnwrapArrayBufferView(obj);
uint8_t* data1 =
(uint8_t*)JS_GetArrayBufferViewData(unwrapped, &shared1, nogc);
auto view = ViewType::unwrap(obj);
CHECK(JS_GetArrayBufferViewType(obj) == ScalarTypeOf<ViewType>::value);
if (JS_IsTypedArrayObject(unwrapped)) {
CHECK(unwrapped->as<TypedArrayObject>().type() ==
TypeIDOfType<typename InternalType<ViewType>::Type>::id);
}
bool shared2;
mozilla::Span<typename ViewType::DataType> span2 =
view.getData(&shared2, nogc);
CHECK(obj == view.asObject());
CHECK(data1 == reinterpret_cast<uint8_t*>(span2.data()));
CHECK(shared1 == shared2);
CHECK(span2.Length() == ExpectedLength);
JS::Heap<ViewType> hv(view);
bool shared3;
mozilla::Span<typename ViewType::DataType> span3 =
hv.getData(&shared3, nogc);
CHECK(obj == hv.asObject());
CHECK(data1 == reinterpret_cast<uint8_t*>(span3.data()));
CHECK(shared1 == shared3);
CHECK(span3.Length() == ExpectedLength);
}
JS::RealmOptions options;
JS::RootedObject otherGlobal(
cx, JS_NewGlobalObject(cx, basicGlobalClass(), nullptr,
JS::DontFireOnNewGlobalHook, options));
CHECK(otherGlobal);
JS::Rooted<JSObject*> buffer(cx);
{
AutoRealm ar(cx, otherGlobal);
buffer = JS::NewArrayBuffer(cx, 8);
CHECK(buffer);
CHECK(buffer->as<ArrayBufferObject>().byteLength() == 8);
}
CHECK(buffer->compartment() == otherGlobal->compartment());
CHECK(JS_WrapObject(cx, &buffer));
CHECK(buffer->compartment() == global->compartment());
JS::Rooted<JSObject*> dataview(cx, JS_NewDataView(cx, buffer, 4, 4));
CHECK(dataview);
CHECK(dataview->is<ProxyObject>());
JS::Rooted<JS::Value> val(cx);
val = ObjectValue(*dataview);
CHECK(JS_SetProperty(cx, global, "view", val));
EVAL("view.buffer", &val);
CHECK(val.toObject().is<ProxyObject>());
CHECK(dataview->compartment() == global->compartment());
JS::Rooted<JSObject*> otherView(cx, js::UncheckedUnwrap(dataview));
CHECK(otherView->compartment() == otherGlobal->compartment());
JS::Rooted<JSObject*> otherBuffer(cx, js::UncheckedUnwrap(&val.toObject()));
CHECK(otherBuffer->compartment() == otherGlobal->compartment());
EVAL("Object.getPrototypeOf(view) === DataView.prototype", &val);
CHECK(val.toBoolean() == true);
return true;
}
END_TEST(testArrayBufferView_type)
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