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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "third_party/blink/renderer/platform/bindings/v8_object_constructor.h"
#include "third_party/blink/renderer/platform/bindings/origin_trial_features.h"
#include "third_party/blink/renderer/platform/bindings/runtime_call_stats.h"
#include "third_party/blink/renderer/platform/bindings/v8_binding.h"
#include "third_party/blink/renderer/platform/bindings/v8_per_context_data.h"
#include "third_party/blink/renderer/platform/bindings/v8_throw_exception.h"
#include "third_party/blink/renderer/platform/instrumentation/tracing/trace_event.h"
namespace blink {
v8::MaybeLocal<v8::Object> V8ObjectConstructor::NewInstance(
v8::Isolate* isolate,
v8::Local<v8::Function> function,
int argc,
v8::Local<v8::Value> argv[]) {
DCHECK(!function.IsEmpty());
TRACE_EVENT0("v8", "v8.newInstance");
RUNTIME_CALL_TIMER_SCOPE(isolate, RuntimeCallStats::CounterId::kV8);
ConstructorMode constructor_mode(isolate);
v8::MicrotasksScope microtasks_scope(
isolate, v8::MicrotasksScope::kDoNotRunMicrotasks);
// Construct without side effect only in ConstructorMode::kWrapExistingObject
// cases. This allows whitelisted methods to correctly set return values
// without invoking Blink's internal constructors.
v8::MaybeLocal<v8::Object> result = function->NewInstanceWithSideEffectType(
isolate->GetCurrentContext(), argc, argv,
v8::SideEffectType::kHasNoSideEffect);
CHECK(!isolate->IsDead());
return result;
}
void V8ObjectConstructor::IsValidConstructorMode(
const v8::FunctionCallbackInfo<v8::Value>& info) {
RUNTIME_CALL_TIMER_SCOPE_DISABLED_BY_DEFAULT(info.GetIsolate(),
"Blink_IsValidConstructorMode");
if (ConstructorMode::Current(info.GetIsolate()) ==
ConstructorMode::kCreateNewObject) {
V8ThrowException::ThrowTypeError(info.GetIsolate(), "Illegal constructor");
return;
}
V8SetReturnValue(info, info.Holder());
}
v8::Local<v8::Function> V8ObjectConstructor::CreateInterfaceObject(
const WrapperTypeInfo* type,
v8::Local<v8::Context> context,
const DOMWrapperWorld& world,
v8::Isolate* isolate,
v8::Local<v8::Function> parent_interface,
CreationMode creation_mode) {
// We shouldn't reach this point for the types that are implemented in v8 such
// as typed arrays and hence don't have DomTemplateFunction.
DCHECK(type->dom_template_function);
v8::Local<v8::FunctionTemplate> interface_template =
type->DomTemplate(isolate, world);
// Getting the function might fail if we're running out of stack or memory.
v8::Local<v8::Function> interface_object;
bool get_interface_object =
interface_template->GetFunction(context).ToLocal(&interface_object);
CHECK(get_interface_object);
if (type->parent_class) {
DCHECK(!parent_interface.IsEmpty());
bool set_parent_interface =
interface_object->SetPrototype(context, parent_interface).ToChecked();
CHECK(set_parent_interface);
}
v8::Local<v8::Object> prototype_object;
if (type->wrapper_type_prototype ==
WrapperTypeInfo::kWrapperTypeObjectPrototype) {
v8::Local<v8::Value> prototype_value;
bool get_prototype_value =
interface_object->Get(context, V8AtomicString(isolate, "prototype"))
.ToLocal(&prototype_value);
CHECK(get_prototype_value);
CHECK(prototype_value->IsObject());
prototype_object = prototype_value.As<v8::Object>();
}
if (creation_mode == CreationMode::kInstallConditionalFeatures) {
type->InstallConditionalFeatures(context, world, v8::Local<v8::Object>(),
prototype_object, interface_object,
interface_template);
InstallOriginTrialFeatures(type, ScriptState::From(context),
prototype_object, interface_object);
}
return interface_object;
}
} // namespace blink
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