C++ (Cpp) CacheIRWriter::guardSpecificObjectの例

コード例 #1

ファイル: CacheIR.cpp プロジェクト: MekliCZ/positron

bool
GetPropIRGenerator::tryAttachModuleNamespace(CacheIRWriter& writer, HandleObject obj,
                                             ObjOperandId objId)
{
    MOZ_ASSERT(!emitted_);

    if (!obj->is<ModuleNamespaceObject>())
        return true;

    Rooted<ModuleNamespaceObject*> ns(cx_, &obj->as<ModuleNamespaceObject>());
    RootedModuleEnvironmentObject env(cx_);
    RootedShape shape(cx_);
    if (!ns->bindings().lookup(NameToId(name_), env.address(), shape.address()))
        return true;

    // Don't emit a stub until the target binding has been initialized.
    if (env->getSlot(shape->slot()).isMagic(JS_UNINITIALIZED_LEXICAL))
        return true;

    if (IsIonEnabled(cx_))
        EnsureTrackPropertyTypes(cx_, env, shape->propid());

    emitted_ = true;

    // Check for the specific namespace object.
    writer.guardSpecificObject(objId, ns);

    ObjOperandId envId = writer.loadObject(env);
    EmitLoadSlotResult(writer, envId, env, shape);
    return true;
}