Source code
Revision control
Copy as Markdown
Other Tools
/* -*- 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
#include <type_traits>
#include "jsfriendapi.h"
#include "js/ArrayBuffer.h" // JS::NewArrayBuffer
#include "js/experimental/TypedData.h"
#include "js/ScalarType.h" // JS::Scalar::Type
#include "jsapi-tests/tests.h"
#include "vm/Realm-inl.h"
using namespace js;
template <class ViewType>
static JSObject* CreateObj(JSContext* cx, size_t len) {
return ViewType::create(cx, len).asObject();
}
template <>
JSObject* CreateObj<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);
}
BEGIN_TEST(testArrayBufferOrView_type) {
JS::RealmOptions options;
JS::RootedObject otherGlobal(
cx, JS_NewGlobalObject(cx, basicGlobalClass(), nullptr,
JS::DontFireOnNewGlobalHook, options));
CHECK(otherGlobal);
CHECK((TestType<JS::TypedArray<Scalar::Uint8>>(cx, otherGlobal)));
CHECK((TestType<JS::TypedArray<Scalar::Int8>>(cx, otherGlobal)));
CHECK((TestType<JS::TypedArray<Scalar::Uint8Clamped>>(cx, otherGlobal)));
CHECK((TestType<JS::TypedArray<Scalar::Uint16>>(cx, otherGlobal)));
CHECK((TestType<JS::TypedArray<Scalar::Int16>>(cx, otherGlobal)));
CHECK((TestType<JS::TypedArray<Scalar::Uint32>>(cx, otherGlobal)));
CHECK((TestType<JS::TypedArray<Scalar::Int32>>(cx, otherGlobal)));
CHECK((TestType<JS::TypedArray<Scalar::Float32>>(cx, otherGlobal)));
CHECK((TestType<JS::TypedArray<Scalar::Float64>>(cx, otherGlobal)));
CHECK((TestType<JS::DataView>(cx, otherGlobal)));
CHECK((TestType<JS::ArrayBuffer>(cx, otherGlobal)));
return true;
}
template <class APIType>
bool TestType(JSContext* cx, Handle<JSObject*> otherGlobal) {
JS::Rooted<JSObject*> obj(cx, CreateObj<APIType>(cx, 8));
CHECK(obj);
// Any of these should be creatable as an ArrayBufferOrView.
JS::Rooted<JS::ArrayBufferOrView> abov(
cx, JS::ArrayBufferOrView::fromObject(obj));
CHECK(abov);
// And that should allow unwrapping as well.
abov = JS::ArrayBufferOrView::unwrap(obj);
CHECK(abov);
if constexpr (!std::is_same_v<APIType, JS::Uint16Array>) {
// Check that we can't make an API object of a different type.
JS::Rooted<JS::Uint16Array> nope(cx, JS::Uint16Array::unwrap(obj));
CHECK(!nope);
// And that we can't make an API object from an object of a different type.
JS::Rooted<JSObject*> u16array(cx, CreateObj<JS::Uint16Array>(cx, 10));
CHECK(u16array);
auto deny = APIType::fromObject(u16array);
CHECK(!deny);
deny = APIType::unwrap(u16array);
CHECK(!deny);
}
CHECK_EQUAL(abov.asObject(), obj);
JS::Rooted<JSObject*> wrapped(cx);
{
AutoRealm ar(cx, otherGlobal);
wrapped = CreateObj<APIType>(cx, 8); // Not wrapped yet!
CHECK(wrapped);
}
CHECK(wrapped->compartment() == otherGlobal->compartment());
CHECK(JS_WrapObject(cx, &wrapped)); // Now it's wrapped.
CHECK(wrapped->compartment() == global->compartment());
abov = JS::ArrayBufferOrView::fromObject(wrapped);
CHECK(!abov);
abov = JS::ArrayBufferOrView::unwrap(wrapped);
CHECK(abov);
JS::Rooted<APIType> dummy(cx, APIType::fromObject(obj));
CHECK(obj);
CHECK(dummy);
CHECK(dummy.asObject());
return true;
}
END_TEST(testArrayBufferOrView_type)