ENTER_V8;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
- // We do not allow exceptions thrown while setting the prototype
- // propagate outside.
- TryCatch try_catch;
EXCEPTION_PREAMBLE();
i::Handle<i::Object> result = i::SetPrototype(self, value_obj);
has_pending_exception = result.is_null();
}
-static Local<Value> GetPropertyByLookup(i::Handle<i::JSObject> receiver,
- i::Handle<i::String> name,
- i::LookupResult* lookup) {
- if (!lookup->IsProperty()) {
- // No real property was found.
- return Local<Value>();
- }
-
- // If the property being looked up is a callback, it can throw
- // an exception.
- EXCEPTION_PREAMBLE();
- i::Handle<i::Object> result = i::GetProperty(receiver, name, lookup);
- has_pending_exception = result.is_null();
- EXCEPTION_BAILOUT_CHECK(Local<Value>());
-
- return Utils::ToLocal(result);
-}
-
-
Local<Value> v8::Object::GetRealNamedPropertyInPrototypeChain(
Handle<String> key) {
ON_BAILOUT("v8::Object::GetRealNamedPropertyInPrototypeChain()",
i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
i::LookupResult lookup;
self_obj->LookupRealNamedPropertyInPrototypes(*key_obj, &lookup);
- return GetPropertyByLookup(self_obj, key_obj, &lookup);
+ if (lookup.IsProperty()) {
+ PropertyAttributes attributes;
+ i::Object* property =
+ self_obj->GetProperty(*self_obj,
+ &lookup,
+ *key_obj,
+ &attributes)->ToObjectUnchecked();
+ i::Handle<i::Object> result(property);
+ return Utils::ToLocal(result);
+ }
+ return Local<Value>(); // No real property was found in prototype chain.
}
i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
i::LookupResult lookup;
self_obj->LookupRealNamedProperty(*key_obj, &lookup);
- return GetPropertyByLookup(self_obj, key_obj, &lookup);
+ if (lookup.IsProperty()) {
+ PropertyAttributes attributes;
+ i::Object* property =
+ self_obj->GetProperty(*self_obj,
+ &lookup,
+ *key_obj,
+ &attributes)->ToObjectUnchecked();
+ i::Handle<i::Object> result(property);
+ return Utils::ToLocal(result);
+ }
+ return Local<Value>(); // No real property was found in prototype chain.
}
}
-Handle<Object> GetProperty(Handle<JSObject> obj,
- Handle<String> name,
- LookupResult* result) {
- PropertyAttributes attributes;
- CALL_HEAP_FUNCTION(obj->GetProperty(*obj, result, *name, &attributes),
- Object);
-}
-
-
Handle<Object> GetElement(Handle<Object> obj,
uint32_t index) {
CALL_HEAP_FUNCTION(Runtime::GetElement(obj, index), Object);
Handle<Object> GetProperty(Handle<Object> obj,
Handle<Object> key);
-Handle<Object> GetProperty(Handle<JSObject> obj,
- Handle<String> name,
- LookupResult* result);
-
-
Handle<Object> GetElement(Handle<Object> obj,
uint32_t index);
void MessageHandler::ReportMessage(MessageLocation* loc,
Handle<Object> message) {
- // We are calling into embedder's code which can throw exceptions.
- // Thus we need to save current exception state, reset it to the clean one
- // and ignore scheduled exceptions callbacks can throw.
- Top::ExceptionScope exception_scope;
- Top::clear_pending_exception();
- Top::set_external_caught_exception(false);
-
v8::Local<v8::Message> api_message_obj = v8::Utils::MessageToLocal(message);
v8::NeanderArray global_listeners(Factory::message_listeners());
int global_length = global_listeners.length();
if (global_length == 0) {
DefaultMessageReport(loc, message);
- if (Top::has_scheduled_exception()) {
- // Consider logging it somehow.
- Top::clear_scheduled_exception();
- }
} else {
for (int i = 0; i < global_length; i++) {
HandleScope scope;
FUNCTION_CAST<v8::MessageCallback>(callback_obj->proxy());
Handle<Object> callback_data(listener.get(1));
callback(api_message_obj, v8::Utils::ToLocal(callback_data));
- if (Top::has_scheduled_exception()) {
- // Consider logging it somehow.
- Top::clear_scheduled_exception();
- }
}
}
}
}
-void Top::PropagatePendingExceptionToExternalTryCatch() {
- ASSERT(has_pending_exception());
-
- bool external_caught = IsExternallyCaught();
- thread_local_.external_caught_exception_ = external_caught;
-
- if (!external_caught) return;
-
- if (thread_local_.pending_exception_ == Failure::OutOfMemoryException()) {
- // Do not propagate OOM exception: we should kill VM asap.
- } else if (thread_local_.pending_exception_ ==
- Heap::termination_exception()) {
- try_catch_handler()->can_continue_ = false;
- try_catch_handler()->exception_ = Heap::null_value();
- } else {
- // At this point all non-object (failure) exceptions have
- // been dealt with so this shouldn't fail.
- ASSERT(!pending_exception()->IsFailure());
- try_catch_handler()->can_continue_ = true;
- try_catch_handler()->exception_ = pending_exception();
- if (!thread_local_.pending_message_obj_->IsTheHole()) {
- try_catch_handler()->message_ = thread_local_.pending_message_obj_;
- }
- }
-}
-
-
void Top::ReportPendingMessages() {
ASSERT(has_pending_exception());
- PropagatePendingExceptionToExternalTryCatch();
-
// If the pending exception is OutOfMemoryException set out_of_memory in
// the global context. Note: We have to mark the global context here
// since the GenerateThrowOutOfMemory stub cannot make a RuntimeCall to
// set it.
+ bool external_caught = IsExternallyCaught();
+ thread_local_.external_caught_exception_ = external_caught;
HandleScope scope;
if (thread_local_.pending_exception_ == Failure::OutOfMemoryException()) {
context()->mark_out_of_memory();
} else if (thread_local_.pending_exception_ ==
Heap::termination_exception()) {
- // Do nothing: if needed, the exception has been already propagated to
- // v8::TryCatch.
+ if (external_caught) {
+ try_catch_handler()->can_continue_ = false;
+ try_catch_handler()->exception_ = Heap::null_value();
+ }
} else {
+ // At this point all non-object (failure) exceptions have
+ // been dealt with so this shouldn't fail.
+ Object* pending_exception_object = pending_exception()->ToObjectUnchecked();
+ Handle<Object> exception(pending_exception_object);
+ thread_local_.external_caught_exception_ = false;
+ if (external_caught) {
+ try_catch_handler()->can_continue_ = true;
+ try_catch_handler()->exception_ = thread_local_.pending_exception_;
+ if (!thread_local_.pending_message_obj_->IsTheHole()) {
+ try_catch_handler()->message_ = thread_local_.pending_message_obj_;
+ }
+ }
if (thread_local_.has_pending_message_) {
thread_local_.has_pending_message_ = false;
if (thread_local_.pending_message_ != NULL) {
MessageHandler::ReportMessage(thread_local_.pending_message_);
} else if (!thread_local_.pending_message_obj_->IsTheHole()) {
- HandleScope scope;
Handle<Object> message_obj(thread_local_.pending_message_obj_);
if (thread_local_.pending_message_script_ != NULL) {
Handle<Script> script(thread_local_.pending_message_script_);
}
}
}
+ thread_local_.external_caught_exception_ = external_caught;
+ set_pending_exception(*exception);
}
clear_pending_message();
}
bool Top::OptionalRescheduleException(bool is_bottom_call) {
- ASSERT(has_pending_exception());
- PropagatePendingExceptionToExternalTryCatch();
-
// Allways reschedule out of memory exceptions.
if (!is_out_of_memory()) {
bool is_termination_exception =
ASSERT(has_pending_exception());
return thread_local_.pending_exception_;
}
+ static bool external_caught_exception() {
+ return thread_local_.external_caught_exception_;
+ }
static void set_pending_exception(MaybeObject* exception) {
thread_local_.pending_exception_ = exception;
}
static void clear_pending_exception() {
thread_local_.pending_exception_ = Heap::the_hole_value();
}
+
static MaybeObject** pending_exception_address() {
return &thread_local_.pending_exception_;
}
static bool has_pending_exception() {
return !thread_local_.pending_exception_->IsTheHole();
}
-
- static bool external_caught_exception() {
- return thread_local_.external_caught_exception_;
- }
- static void set_external_caught_exception(bool value) {
- thread_local_.external_caught_exception_ = value;
- }
-
static void clear_pending_message() {
thread_local_.has_pending_message_ = false;
thread_local_.pending_message_ = NULL;
static const char* kStackOverflowMessage;
private:
-
- static v8::TryCatch* catcher() {
- return thread_local_.catcher_;
- }
-
- static void set_catcher(v8::TryCatch* catcher) {
- thread_local_.catcher_ = catcher;
- }
-
- static void setup_external_caught() {
- thread_local_.external_caught_exception_ =
- has_pending_exception() &&
- (thread_local_.catcher_ != NULL) &&
- (try_catch_handler() == thread_local_.catcher_);
- }
-
- // Attempts to propagate the pending exception to the proper v8::TryCatch.
- static void PropagatePendingExceptionToExternalTryCatch();
-
#ifdef ENABLE_VMSTATE_TRACKING
// Set of states used when communicating with the runtime profiler.
//
friend class ThreadLocalTop;
static void FillCache();
-
- public:
- class ExceptionScope {
- public:
- ExceptionScope() :
- // Scope currently can only be used for regular exceptions, not
- // failures like OOM or termination exception.
- pending_exception_(Top::pending_exception()->ToObjectUnchecked()),
- external_caught_exception_(Top::external_caught_exception()),
- catcher_(Top::catcher())
- { }
-
- ~ExceptionScope() {
- Top::set_catcher(catcher_);
- Top::set_external_caught_exception(external_caught_exception_);
- Top::set_pending_exception(*pending_exception_);
- }
-
- private:
- Handle<Object> pending_exception_;
- bool external_caught_exception_;
- v8::TryCatch* catcher_;
- };
};
}
using ::v8::AccessorInfo;
-using ::v8::Arguments;
using ::v8::Context;
using ::v8::Extension;
using ::v8::Function;
-using ::v8::FunctionTemplate;
-using ::v8::Handle;
using ::v8::HandleScope;
using ::v8::Local;
-using ::v8::Message;
-using ::v8::MessageCallback;
using ::v8::Object;
using ::v8::ObjectTemplate;
using ::v8::Persistent;
using ::v8::Script;
-using ::v8::StackTrace;
using ::v8::String;
-using ::v8::TryCatch;
-using ::v8::Undefined;
-using ::v8::V8;
using ::v8::Value;
+using ::v8::V8;
namespace i = ::i;
}
-static Handle<Value> ThrowingGetter(Local<String> name,
- const AccessorInfo& info) {
- ApiTestFuzzer::Fuzz();
- ThrowException(Handle<Value>());
- return Undefined();
-}
-
-
-THREADED_TEST(VariousGetPropertiesAndThrowingCallbacks) {
- HandleScope scope;
- LocalContext context;
-
- Local<FunctionTemplate> templ = FunctionTemplate::New();
- Local<ObjectTemplate> instance_templ = templ->InstanceTemplate();
- instance_templ->SetAccessor(v8_str("f"), ThrowingGetter);
-
- Local<Object> instance = templ->GetFunction()->NewInstance();
-
- Local<Object> another = Object::New();
- another->SetPrototype(instance);
-
- Local<Object> with_js_getter = CompileRun(
- "o = {};\n"
- "o.__defineGetter__('f', function() { throw undefined; });\n"
- "o\n").As<Object>();
- CHECK(!with_js_getter.IsEmpty());
-
- TryCatch try_catch;
-
- Local<Value> result = instance->GetRealNamedProperty(v8_str("f"));
- CHECK(try_catch.HasCaught());
- try_catch.Reset();
- CHECK(result.IsEmpty());
-
- result = another->GetRealNamedProperty(v8_str("f"));
- CHECK(try_catch.HasCaught());
- try_catch.Reset();
- CHECK(result.IsEmpty());
-
- result = another->GetRealNamedPropertyInPrototypeChain(v8_str("f"));
- CHECK(try_catch.HasCaught());
- try_catch.Reset();
- CHECK(result.IsEmpty());
-
- result = another->Get(v8_str("f"));
- CHECK(try_catch.HasCaught());
- try_catch.Reset();
- CHECK(result.IsEmpty());
-
- result = with_js_getter->GetRealNamedProperty(v8_str("f"));
- CHECK(try_catch.HasCaught());
- try_catch.Reset();
- CHECK(result.IsEmpty());
-
- result = with_js_getter->Get(v8_str("f"));
- CHECK(try_catch.HasCaught());
- try_catch.Reset();
- CHECK(result.IsEmpty());
-}
-
-
-static Handle<Value> ThrowingCallbackWithTryCatch(const Arguments& args) {
- TryCatch try_catch;
- // Verboseness is important: it triggers message delivery which can call into
- // external code.
- try_catch.SetVerbose(true);
- CompileRun("throw 'from JS';");
- CHECK(try_catch.HasCaught());
- CHECK(!i::Top::has_pending_exception());
- CHECK(!i::Top::has_scheduled_exception());
- return Undefined();
-}
-
-
-static void WithTryCatch(Handle<Message> message, Handle<Value> data) {
- TryCatch try_catch;
-}
-
-
-static void ThrowFromJS(Handle<Message> message, Handle<Value> data) {
- CompileRun("throw 'ThrowInJS';");
-}
-
-
-static void ThrowViaApi(Handle<Message> message, Handle<Value> data) {
- ThrowException(v8_str("ThrowViaApi"));
-}
-
-
-static void WebKitLike(Handle<Message> message, Handle<Value> data) {
- Handle<String> errorMessageString = message->Get();
- CHECK(!errorMessageString.IsEmpty());
- message->GetStackTrace();
- message->GetScriptResourceName();
-}
-
-THREADED_TEST(ExceptionsDoNotPropagatePastTryCatch) {
- HandleScope scope;
- LocalContext context;
-
- Local<Function> func =
- FunctionTemplate::New(ThrowingCallbackWithTryCatch)->GetFunction();
- context->Global()->Set(v8_str("func"), func);
-
- MessageCallback callbacks[] =
- { NULL, WebKitLike, ThrowViaApi, ThrowFromJS, WithTryCatch };
- for (unsigned i = 0; i < sizeof(callbacks)/sizeof(callbacks[0]); i++) {
- MessageCallback callback = callbacks[i];
- if (callback != NULL) {
- V8::AddMessageListener(callback);
- }
- ExpectFalse(
- "var thrown = false;\n"
- "try { func(); } catch(e) { thrown = true; }\n"
- "thrown\n");
- if (callback != NULL) {
- V8::RemoveMessageListeners(callback);
- }
- }
-}
-
-
static v8::Handle<Value> ParentGetter(Local<String> name,
const AccessorInfo& info) {
ApiTestFuzzer::Fuzz();
projects / platform / upstream / v8.git / commitdiff