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android / platform / external / webkit / 6280de499aecbc9f7c0d1fb56d5c19ec4ace3b68 / . / V8Binding / v8 / src / api.cc
blob: 422235391deaa7ba1b98ad14cc57ae4ce044bb3b [file] [log] [blame]
// Copyright 2009 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
// OWNER OR 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 "v8.h"
#include "api.h"
#include "bootstrapper.h"
#include "compiler.h"
#include "debug.h"
#include "execution.h"
#include "global-handles.h"
#include "platform.h"
#include "serialize.h"
#include "snapshot.h"
#include "v8threads.h"
#include "version.h"
#define LOG_API(expr) LOG(ApiEntryCall(expr))
#ifdef ENABLE_HEAP_PROTECTION
#define ENTER_V8 i::VMState __state__(i::OTHER)
#define LEAVE_V8 i::VMState __state__(i::EXTERNAL)
#else
#define ENTER_V8 ((void) 0)
#define LEAVE_V8 ((void) 0)
#endif
namespace v8 {
#define ON_BAILOUT(location, code) \
if (IsDeadCheck(location)) { \
code; \
UNREACHABLE(); \
}
#define EXCEPTION_PREAMBLE() \
thread_local.IncrementCallDepth(); \
ASSERT(!i::Top::external_caught_exception()); \
bool has_pending_exception = false
#define EXCEPTION_BAILOUT_CHECK(value) \
do { \
thread_local.DecrementCallDepth(); \
if (has_pending_exception) { \
if (thread_local.CallDepthIsZero() && i::Top::is_out_of_memory()) { \
if (!thread_local.IgnoreOutOfMemory()) \
i::V8::FatalProcessOutOfMemory(NULL); \
} \
bool call_depth_is_zero = thread_local.CallDepthIsZero(); \
i::Top::optional_reschedule_exception(call_depth_is_zero); \
return value; \
} \
} while (false)
#define API_ENTRY_CHECK(msg) \
do { \
if (v8::Locker::IsActive()) { \
ApiCheck(i::ThreadManager::IsLockedByCurrentThread(), \
msg, \
"Entering the V8 API without proper locking in place"); \
} \
} while (false)
// --- D a t a t h a t i s s p e c i f i c t o a t h r e a d ---
static i::HandleScopeImplementer thread_local;
// --- E x c e p t i o n B e h a v i o r ---
static FatalErrorCallback exception_behavior = NULL;
static void DefaultFatalErrorHandler(const char* location,
const char* message) {
ENTER_V8;
API_Fatal(location, message);
}
static FatalErrorCallback& GetFatalErrorHandler() {
if (exception_behavior == NULL) {
exception_behavior = DefaultFatalErrorHandler;
}
return exception_behavior;
}
// When V8 cannot allocated memory FatalProcessOutOfMemory is called.
// The default fatal error handler is called and execution is stopped.
void i::V8::FatalProcessOutOfMemory(const char* location) {
i::V8::SetFatalError();
FatalErrorCallback callback = GetFatalErrorHandler();
{
LEAVE_V8;
callback(location, "Allocation failed - process out of memory");
}
// If the callback returns, we stop execution.
UNREACHABLE();
}
void V8::SetFatalErrorHandler(FatalErrorCallback that) {
exception_behavior = that;
}
bool Utils::ReportApiFailure(const char* location, const char* message) {
FatalErrorCallback callback = GetFatalErrorHandler();
callback(location, message);
i::V8::SetFatalError();
return false;
}
bool V8::IsDead() {
return i::V8::IsDead();
}
static inline bool ApiCheck(bool condition,
const char* location,
const char* message) {
return condition ? true : Utils::ReportApiFailure(location, message);
}
static bool ReportV8Dead(const char* location) {
FatalErrorCallback callback = GetFatalErrorHandler();
callback(location, "V8 is no longer usable");
return true;
}
static bool ReportEmptyHandle(const char* location) {
FatalErrorCallback callback = GetFatalErrorHandler();
callback(location, "Reading from empty handle");
return true;
}
/**
* IsDeadCheck checks that the vm is usable. If, for instance, the vm has been
* out of memory at some point this check will fail. It should be called on
* entry to all methods that touch anything in the heap, except destructors
* which you sometimes can't avoid calling after the vm has crashed. Functions
* that call EnsureInitialized or ON_BAILOUT don't have to also call
* IsDeadCheck. ON_BAILOUT has the advantage over EnsureInitialized that you
* can arrange to return if the VM is dead. This is needed to ensure that no VM
* heap allocations are attempted on a dead VM. EnsureInitialized has the
* advantage over ON_BAILOUT that it actually initializes the VM if this has not
* yet been done.
*/
static inline bool IsDeadCheck(const char* location) {
return !i::V8::IsRunning()
&& i::V8::IsDead() ? ReportV8Dead(location) : false;
}
static inline bool EmptyCheck(const char* location, v8::Handle<v8::Data> obj) {
return obj.IsEmpty() ? ReportEmptyHandle(location) : false;
}
static inline bool EmptyCheck(const char* location, const v8::Data* obj) {
return (obj == 0) ? ReportEmptyHandle(location) : false;
}
// --- S t a t i c s ---
static i::StringInputBuffer write_input_buffer;
static inline bool EnsureInitialized(const char* location) {
if (i::V8::IsRunning()) {
return true;
}
if (IsDeadCheck(location)) {
return false;
}
return ApiCheck(v8::V8::Initialize(), location, "Error initializing V8");
}
ImplementationUtilities::HandleScopeData*
ImplementationUtilities::CurrentHandleScope() {
return &i::HandleScope::current_;
}
#ifdef DEBUG
void ImplementationUtilities::ZapHandleRange(void** begin, void** end) {
i::HandleScope::ZapRange(begin, end);
}
#endif
v8::Handle<v8::Primitive> ImplementationUtilities::Undefined() {
if (!EnsureInitialized("v8::Undefined()")) return v8::Handle<v8::Primitive>();
return v8::Handle<Primitive>(ToApi<Primitive>(i::Factory::undefined_value()));
}
v8::Handle<v8::Primitive> ImplementationUtilities::Null() {
if (!EnsureInitialized("v8::Null()")) return v8::Handle<v8::Primitive>();
return v8::Handle<Primitive>(ToApi<Primitive>(i::Factory::null_value()));
}
v8::Handle<v8::Boolean> ImplementationUtilities::True() {
if (!EnsureInitialized("v8::True()")) return v8::Handle<v8::Boolean>();
return v8::Handle<v8::Boolean>(ToApi<Boolean>(i::Factory::true_value()));
}
v8::Handle<v8::Boolean> ImplementationUtilities::False() {
if (!EnsureInitialized("v8::False()")) return v8::Handle<v8::Boolean>();
return v8::Handle<v8::Boolean>(ToApi<Boolean>(i::Factory::false_value()));
}
void V8::SetFlagsFromString(const char* str, int length) {
i::FlagList::SetFlagsFromString(str, length);
}
void V8::SetFlagsFromCommandLine(int* argc, char** argv, bool remove_flags) {
i::FlagList::SetFlagsFromCommandLine(argc, argv, remove_flags);
}
v8::Handle<Value> ThrowException(v8::Handle<v8::Value> value) {
if (IsDeadCheck("v8::ThrowException()")) return v8::Handle<Value>();
ENTER_V8;
// If we're passed an empty handle, we throw an undefined exception
// to deal more gracefully with out of memory situations.
if (value.IsEmpty()) {
i::Top::ScheduleThrow(i::Heap::undefined_value());
} else {
i::Top::ScheduleThrow(*Utils::OpenHandle(*value));
}
return v8::Undefined();
}
RegisteredExtension* RegisteredExtension::first_extension_ = NULL;
RegisteredExtension::RegisteredExtension(Extension* extension)
: extension_(extension), state_(UNVISITED) { }
void RegisteredExtension::Register(RegisteredExtension* that) {
that->next_ = RegisteredExtension::first_extension_;
RegisteredExtension::first_extension_ = that;
}
void RegisterExtension(Extension* that) {
RegisteredExtension* extension = new RegisteredExtension(that);
RegisteredExtension::Register(extension);
}
Extension::Extension(const char* name,
const char* source,
int dep_count,
const char** deps)
: name_(name),
source_(source),
dep_count_(dep_count),
deps_(deps),
auto_enable_(false) { }
v8::Handle<Primitive> Undefined() {
LOG_API("Undefined");
return ImplementationUtilities::Undefined();
}
v8::Handle<Primitive> Null() {
LOG_API("Null");
return ImplementationUtilities::Null();
}
v8::Handle<Boolean> True() {
LOG_API("True");
return ImplementationUtilities::True();
}
v8::Handle<Boolean> False() {
LOG_API("False");
return ImplementationUtilities::False();
}
ResourceConstraints::ResourceConstraints()
: max_young_space_size_(0),
max_old_space_size_(0),
stack_limit_(NULL) { }
bool SetResourceConstraints(ResourceConstraints* constraints) {
bool result = i::Heap::ConfigureHeap(constraints->max_young_space_size(),
constraints->max_old_space_size());
if (!result) return false;
if (constraints->stack_limit() != NULL) {
uintptr_t limit = reinterpret_cast<uintptr_t>(constraints->stack_limit());
i::StackGuard::SetStackLimit(limit);
}
return true;
}
void** V8::GlobalizeReference(void** obj) {
if (IsDeadCheck("V8::Persistent::New")) return NULL;
LOG_API("Persistent::New");
i::Handle<i::Object> result =
i::GlobalHandles::Create(*reinterpret_cast<i::Object**>(obj));
return reinterpret_cast<void**>(result.location());
}
void V8::MakeWeak(void** object, void* parameters,
WeakReferenceCallback callback) {
LOG_API("MakeWeak");
i::GlobalHandles::MakeWeak(reinterpret_cast<i::Object**>(object), parameters,
callback);
}
void V8::ClearWeak(void** obj) {
LOG_API("ClearWeak");
i::GlobalHandles::ClearWeakness(reinterpret_cast<i::Object**>(obj));
}
bool V8::IsGlobalNearDeath(void** obj) {
LOG_API("IsGlobalNearDeath");
if (!i::V8::IsRunning()) return false;
return i::GlobalHandles::IsNearDeath(reinterpret_cast<i::Object**>(obj));
}
bool V8::IsGlobalWeak(void** obj) {
LOG_API("IsGlobalWeak");
if (!i::V8::IsRunning()) return false;
return i::GlobalHandles::IsWeak(reinterpret_cast<i::Object**>(obj));
}
void V8::DisposeGlobal(void** obj) {
LOG_API("DisposeGlobal");
if (!i::V8::IsRunning()) return;
i::Object** ptr = reinterpret_cast<i::Object**>(obj);
if ((*ptr)->IsGlobalContext()) i::Heap::NotifyContextDisposed();
i::GlobalHandles::Destroy(ptr);
}
// --- H a n d l e s ---
HandleScope::HandleScope() : is_closed_(false) {
API_ENTRY_CHECK("HandleScope::HandleScope");
i::HandleScope::Enter(&previous_);
}
HandleScope::~HandleScope() {
if (!is_closed_) {
i::HandleScope::Leave(&previous_);
}
}
int HandleScope::NumberOfHandles() {
return i::HandleScope::NumberOfHandles();
}
void** v8::HandleScope::CreateHandle(void* value) {
return reinterpret_cast<void**>(
i::HandleScope::CreateHandle(reinterpret_cast<i::Object*>(value)));
}
void Context::Enter() {
if (IsDeadCheck("v8::Context::Enter()")) return;
ENTER_V8;
i::Handle<i::Context> env = Utils::OpenHandle(this);
thread_local.EnterContext(env);
thread_local.SaveContext(i::GlobalHandles::Create(i::Top::context()));
i::Top::set_context(*env);
}
void Context::Exit() {
if (!i::V8::IsRunning()) return;
if (!ApiCheck(thread_local.LeaveLastContext(),
"v8::Context::Exit()",
"Cannot exit non-entered context")) {
return;
}
// Content of 'last_context' could be NULL.
i::Handle<i::Object> last_context = thread_local.RestoreContext();
i::Top::set_context(static_cast<i::Context*>(*last_context));
i::GlobalHandles::Destroy(last_context.location());
}
void Context::SetData(v8::Handle<Value> data) {
if (IsDeadCheck("v8::Context::SetData()")) return;
ENTER_V8;
{
HandleScope scope;
i::Handle<i::Context> env = Utils::OpenHandle(this);
i::Handle<i::Object> raw_data = Utils::OpenHandle(*data);
ASSERT(env->IsGlobalContext());
if (env->IsGlobalContext()) {
env->set_data(*raw_data);
}
}
}
v8::Local<v8::Value> Context::GetData() {
if (IsDeadCheck("v8::Context::GetData()")) return v8::Local<Value>();
ENTER_V8;
i::Object* raw_result = NULL;
{
HandleScope scope;
i::Handle<i::Context> env = Utils::OpenHandle(this);
ASSERT(env->IsGlobalContext());
if (env->IsGlobalContext()) {
raw_result = env->data();
} else {
return Local<Value>();
}
}
i::Handle<i::Object> result(raw_result);
return Utils::ToLocal(result);
}
void** v8::HandleScope::RawClose(void** value) {
if (!ApiCheck(!is_closed_,
"v8::HandleScope::Close()",
"Local scope has already been closed")) {
return 0;
}
LOG_API("CloseHandleScope");
// Read the result before popping the handle block.
i::Object* result = reinterpret_cast<i::Object*>(*value);
is_closed_ = true;
i::HandleScope::Leave(&previous_);
// Allocate a new handle on the previous handle block.
i::Handle<i::Object> handle(result);
return reinterpret_cast<void**>(handle.location());
}
// --- N e a n d e r ---
// A constructor cannot easily return an error value, therefore it is necessary
// to check for a dead VM with ON_BAILOUT before constructing any Neander
// objects. To remind you about this there is no HandleScope in the
// NeanderObject constructor. When you add one to the site calling the
// constructor you should check that you ensured the VM was not dead first.
NeanderObject::NeanderObject(int size) {
EnsureInitialized("v8::Nowhere");
ENTER_V8;
value_ = i::Factory::NewNeanderObject();
i::Handle<i::FixedArray> elements = i::Factory::NewFixedArray(size);
value_->set_elements(*elements);
}
int NeanderObject::size() {
return i::FixedArray::cast(value_->elements())->length();
}
NeanderArray::NeanderArray() : obj_(2) {
obj_.set(0, i::Smi::FromInt(0));
}
int NeanderArray::length() {
return i::Smi::cast(obj_.get(0))->value();
}
i::Object* NeanderArray::get(int offset) {
ASSERT(0 <= offset);
ASSERT(offset < length());
return obj_.get(offset + 1);
}
// This method cannot easily return an error value, therefore it is necessary
// to check for a dead VM with ON_BAILOUT before calling it. To remind you
// about this there is no HandleScope in this method. When you add one to the
// site calling this method you should check that you ensured the VM was not
// dead first.
void NeanderArray::add(i::Handle<i::Object> value) {
int length = this->length();
int size = obj_.size();
if (length == size - 1) {
i::Handle<i::FixedArray> new_elms = i::Factory::NewFixedArray(2 * size);
for (int i = 0; i < length; i++)
new_elms->set(i + 1, get(i));
obj_.value()->set_elements(*new_elms);
}
obj_.set(length + 1, *value);
obj_.set(0, i::Smi::FromInt(length + 1));
}
void NeanderArray::set(int index, i::Object* value) {
if (index < 0 || index >= this->length()) return;
obj_.set(index + 1, value);
}
// --- T e m p l a t e ---
static void InitializeTemplate(i::Handle<i::TemplateInfo> that, int type) {
that->set_tag(i::Smi::FromInt(type));
}
void Template::Set(v8::Handle<String> name, v8::Handle<Data> value,
v8::PropertyAttribute attribute) {
if (IsDeadCheck("v8::Template::SetProperty()")) return;
ENTER_V8;
HandleScope scope;
i::Handle<i::Object> list(Utils::OpenHandle(this)->property_list());
if (list->IsUndefined()) {
list = NeanderArray().value();
Utils::OpenHandle(this)->set_property_list(*list);
}
NeanderArray array(list);
array.add(Utils::OpenHandle(*name));
array.add(Utils::OpenHandle(*value));
array.add(Utils::OpenHandle(*v8::Integer::New(attribute)));
}
// --- F u n c t i o n T e m p l a t e ---
static void InitializeFunctionTemplate(
i::Handle<i::FunctionTemplateInfo> info) {
info->set_tag(i::Smi::FromInt(Consts::FUNCTION_TEMPLATE));
info->set_flag(0);
}
Local<ObjectTemplate> FunctionTemplate::PrototypeTemplate() {
if (IsDeadCheck("v8::FunctionTemplate::PrototypeTemplate()")) {
return Local<ObjectTemplate>();
}
ENTER_V8;
i::Handle<i::Object> result(Utils::OpenHandle(this)->prototype_template());
if (result->IsUndefined()) {
result = Utils::OpenHandle(*ObjectTemplate::New());
Utils::OpenHandle(this)->set_prototype_template(*result);
}
return Local<ObjectTemplate>(ToApi<ObjectTemplate>(result));
}
void FunctionTemplate::Inherit(v8::Handle<FunctionTemplate> value) {
if (IsDeadCheck("v8::FunctionTemplate::Inherit()")) return;
ENTER_V8;
Utils::OpenHandle(this)->set_parent_template(*Utils::OpenHandle(*value));
}
// To distinguish the function templates, so that we can find them in the
// function cache of the global context.
static int next_serial_number = 0;
Local<FunctionTemplate> FunctionTemplate::New(InvocationCallback callback,
v8::Handle<Value> data, v8::Handle<Signature> signature) {
EnsureInitialized("v8::FunctionTemplate::New()");
LOG_API("FunctionTemplate::New");
ENTER_V8;
i::Handle<i::Struct> struct_obj =
i::Factory::NewStruct(i::FUNCTION_TEMPLATE_INFO_TYPE);
i::Handle<i::FunctionTemplateInfo> obj =
i::Handle<i::FunctionTemplateInfo>::cast(struct_obj);
InitializeFunctionTemplate(obj);
obj->set_serial_number(i::Smi::FromInt(next_serial_number++));
if (callback != 0) {
if (data.IsEmpty()) data = v8::Undefined();
Utils::ToLocal(obj)->SetCallHandler(callback, data);
}
obj->set_undetectable(false);
obj->set_needs_access_check(false);
if (!signature.IsEmpty())
obj->set_signature(*Utils::OpenHandle(*signature));
return Utils::ToLocal(obj);
}
Local<Signature> Signature::New(Handle<FunctionTemplate> receiver,
int argc, Handle<FunctionTemplate> argv[]) {
EnsureInitialized("v8::Signature::New()");
LOG_API("Signature::New");
ENTER_V8;
i::Handle<i::Struct> struct_obj =
i::Factory::NewStruct(i::SIGNATURE_INFO_TYPE);
i::Handle<i::SignatureInfo> obj =
i::Handle<i::SignatureInfo>::cast(struct_obj);
if (!receiver.IsEmpty()) obj->set_receiver(*Utils::OpenHandle(*receiver));
if (argc > 0) {
i::Handle<i::FixedArray> args = i::Factory::NewFixedArray(argc);
for (int i = 0; i < argc; i++) {
if (!argv[i].IsEmpty())
args->set(i, *Utils::OpenHandle(*argv[i]));
}
obj->set_args(*args);
}
return Utils::ToLocal(obj);
}
Local<TypeSwitch> TypeSwitch::New(Handle<FunctionTemplate> type) {
Handle<FunctionTemplate> types[1] = { type };
return TypeSwitch::New(1, types);
}
Local<TypeSwitch> TypeSwitch::New(int argc, Handle<FunctionTemplate> types[]) {
EnsureInitialized("v8::TypeSwitch::New()");
LOG_API("TypeSwitch::New");
ENTER_V8;
i::Handle<i::FixedArray> vector = i::Factory::NewFixedArray(argc);
for (int i = 0; i < argc; i++)
vector->set(i, *Utils::OpenHandle(*types[i]));
i::Handle<i::Struct> struct_obj =
i::Factory::NewStruct(i::TYPE_SWITCH_INFO_TYPE);
i::Handle<i::TypeSwitchInfo> obj =
i::Handle<i::TypeSwitchInfo>::cast(struct_obj);
obj->set_types(*vector);
return Utils::ToLocal(obj);
}
int TypeSwitch::match(v8::Handle<Value> value) {
LOG_API("TypeSwitch::match");
i::Handle<i::Object> obj = Utils::OpenHandle(*value);
i::Handle<i::TypeSwitchInfo> info = Utils::OpenHandle(this);
i::FixedArray* types = i::FixedArray::cast(info->types());
for (int i = 0; i < types->length(); i++) {
if (obj->IsInstanceOf(i::FunctionTemplateInfo::cast(types->get(i))))
return i + 1;
}
return 0;
}
void FunctionTemplate::SetCallHandler(InvocationCallback callback,
v8::Handle<Value> data) {
if (IsDeadCheck("v8::FunctionTemplate::SetCallHandler()")) return;
ENTER_V8;
HandleScope scope;
i::Handle<i::Struct> struct_obj =
i::Factory::NewStruct(i::CALL_HANDLER_INFO_TYPE);
i::Handle<i::CallHandlerInfo> obj =
i::Handle<i::CallHandlerInfo>::cast(struct_obj);
obj->set_callback(*FromCData(callback));
if (data.IsEmpty()) data = v8::Undefined();
obj->set_data(*Utils::OpenHandle(*data));
Utils::OpenHandle(this)->set_call_code(*obj);
}
void FunctionTemplate::AddInstancePropertyAccessor(
v8::Handle<String> name,
AccessorGetter getter,
AccessorSetter setter,
v8::Handle<Value> data,
v8::AccessControl settings,
v8::PropertyAttribute attributes) {
if (IsDeadCheck("v8::FunctionTemplate::AddInstancePropertyAccessor()")) {
return;
}
ENTER_V8;
HandleScope scope;
i::Handle<i::AccessorInfo> obj = i::Factory::NewAccessorInfo();
ASSERT(getter != NULL);
obj->set_getter(*FromCData(getter));
obj->set_setter(*FromCData(setter));
if (data.IsEmpty()) data = v8::Undefined();
obj->set_data(*Utils::OpenHandle(*data));
obj->set_name(*Utils::OpenHandle(*name));
if (settings & ALL_CAN_READ) obj->set_all_can_read(true);
if (settings & ALL_CAN_WRITE) obj->set_all_can_write(true);
if (settings & PROHIBITS_OVERWRITING) obj->set_prohibits_overwriting(true);
obj->set_property_attributes(static_cast<PropertyAttributes>(attributes));
i::Handle<i::Object> list(Utils::OpenHandle(this)->property_accessors());
if (list->IsUndefined()) {
list = NeanderArray().value();
Utils::OpenHandle(this)->set_property_accessors(*list);
}
NeanderArray array(list);
array.add(obj);
}
Local<ObjectTemplate> FunctionTemplate::InstanceTemplate() {
if (IsDeadCheck("v8::FunctionTemplate::InstanceTemplate()")
|| EmptyCheck("v8::FunctionTemplate::InstanceTemplate()", this))
return Local<ObjectTemplate>();
ENTER_V8;
if (Utils::OpenHandle(this)->instance_template()->IsUndefined()) {
Local<ObjectTemplate> templ =
ObjectTemplate::New(v8::Handle<FunctionTemplate>(this));
Utils::OpenHandle(this)->set_instance_template(*Utils::OpenHandle(*templ));
}
i::Handle<i::ObjectTemplateInfo> result(i::ObjectTemplateInfo::cast(
Utils::OpenHandle(this)->instance_template()));
return Utils::ToLocal(result);
}
void FunctionTemplate::SetClassName(Handle<String> name) {
if (IsDeadCheck("v8::FunctionTemplate::SetClassName()")) return;
ENTER_V8;
Utils::OpenHandle(this)->set_class_name(*Utils::OpenHandle(*name));
}
void FunctionTemplate::SetHiddenPrototype(bool value) {
if (IsDeadCheck("v8::FunctionTemplate::SetHiddenPrototype()")) return;
ENTER_V8;
Utils::OpenHandle(this)->set_hidden_prototype(value);
}
void FunctionTemplate::SetNamedInstancePropertyHandler(
NamedPropertyGetter getter,
NamedPropertySetter setter,
NamedPropertyQuery query,
NamedPropertyDeleter remover,
NamedPropertyEnumerator enumerator,
Handle<Value> data) {
if (IsDeadCheck("v8::FunctionTemplate::SetNamedInstancePropertyHandler()")) {
return;
}
ENTER_V8;
HandleScope scope;
i::Handle<i::Struct> struct_obj =
i::Factory::NewStruct(i::INTERCEPTOR_INFO_TYPE);
i::Handle<i::InterceptorInfo> obj =
i::Handle<i::InterceptorInfo>::cast(struct_obj);
if (getter != 0) obj->set_getter(*FromCData(getter));
if (setter != 0) obj->set_setter(*FromCData(setter));
if (query != 0) obj->set_query(*FromCData(query));
if (remover != 0) obj->set_deleter(*FromCData(remover));
if (enumerator != 0) obj->set_enumerator(*FromCData(enumerator));
if (data.IsEmpty()) data = v8::Undefined();
obj->set_data(*Utils::OpenHandle(*data));
Utils::OpenHandle(this)->set_named_property_handler(*obj);
}
void FunctionTemplate::SetIndexedInstancePropertyHandler(
IndexedPropertyGetter getter,
IndexedPropertySetter setter,
IndexedPropertyQuery query,
IndexedPropertyDeleter remover,
IndexedPropertyEnumerator enumerator,
Handle<Value> data) {
if (IsDeadCheck(
"v8::FunctionTemplate::SetIndexedInstancePropertyHandler()")) {
return;
}
ENTER_V8;
HandleScope scope;
i::Handle<i::Struct> struct_obj =
i::Factory::NewStruct(i::INTERCEPTOR_INFO_TYPE);
i::Handle<i::InterceptorInfo> obj =
i::Handle<i::InterceptorInfo>::cast(struct_obj);
if (getter != 0) obj->set_getter(*FromCData(getter));
if (setter != 0) obj->set_setter(*FromCData(setter));
if (query != 0) obj->set_query(*FromCData(query));
if (remover != 0) obj->set_deleter(*FromCData(remover));
if (enumerator != 0) obj->set_enumerator(*FromCData(enumerator));
if (data.IsEmpty()) data = v8::Undefined();
obj->set_data(*Utils::OpenHandle(*data));
Utils::OpenHandle(this)->set_indexed_property_handler(*obj);
}
void FunctionTemplate::SetInstanceCallAsFunctionHandler(
InvocationCallback callback,
Handle<Value> data) {
if (IsDeadCheck("v8::FunctionTemplate::SetInstanceCallAsFunctionHandler()")) {
return;
}
ENTER_V8;
HandleScope scope;
i::Handle<i::Struct> struct_obj =
i::Factory::NewStruct(i::CALL_HANDLER_INFO_TYPE);
i::Handle<i::CallHandlerInfo> obj =
i::Handle<i::CallHandlerInfo>::cast(struct_obj);
obj->set_callback(*FromCData(callback));
if (data.IsEmpty()) data = v8::Undefined();
obj->set_data(*Utils::OpenHandle(*data));
Utils::OpenHandle(this)->set_instance_call_handler(*obj);
}
// --- O b j e c t T e m p l a t e ---
Local<ObjectTemplate> ObjectTemplate::New() {
return New(Local<FunctionTemplate>());
}
Local<ObjectTemplate> ObjectTemplate::New(
v8::Handle<FunctionTemplate> constructor) {
if (IsDeadCheck("v8::ObjectTemplate::New()")) return Local<ObjectTemplate>();
EnsureInitialized("v8::ObjectTemplate::New()");
LOG_API("ObjectTemplate::New");
ENTER_V8;
i::Handle<i::Struct> struct_obj =
i::Factory::NewStruct(i::OBJECT_TEMPLATE_INFO_TYPE);
i::Handle<i::ObjectTemplateInfo> obj =
i::Handle<i::ObjectTemplateInfo>::cast(struct_obj);
InitializeTemplate(obj, Consts::OBJECT_TEMPLATE);
if (!constructor.IsEmpty())
obj->set_constructor(*Utils::OpenHandle(*constructor));
obj->set_internal_field_count(i::Smi::FromInt(0));
return Utils::ToLocal(obj);
}
// Ensure that the object template has a constructor. If no
// constructor is available we create one.
static void EnsureConstructor(ObjectTemplate* object_template) {
if (Utils::OpenHandle(object_template)->constructor()->IsUndefined()) {
Local<FunctionTemplate> templ = FunctionTemplate::New();
i::Handle<i::FunctionTemplateInfo> constructor = Utils::OpenHandle(*templ);
constructor->set_instance_template(*Utils::OpenHandle(object_template));
Utils::OpenHandle(object_template)->set_constructor(*constructor);
}
}
void ObjectTemplate::SetAccessor(v8::Handle<String> name,
AccessorGetter getter,
AccessorSetter setter,
v8::Handle<Value> data,
AccessControl settings,
PropertyAttribute attribute) {
if (IsDeadCheck("v8::ObjectTemplate::SetAccessor()")) return;
ENTER_V8;
HandleScope scope;
EnsureConstructor(this);
i::FunctionTemplateInfo* constructor =
i::FunctionTemplateInfo::cast(Utils::OpenHandle(this)->constructor());
i::Handle<i::FunctionTemplateInfo> cons(constructor);
Utils::ToLocal(cons)->AddInstancePropertyAccessor(name,
getter,
setter,
data,
settings,
attribute);
}
void ObjectTemplate::SetNamedPropertyHandler(NamedPropertyGetter getter,
NamedPropertySetter setter,
NamedPropertyQuery query,
NamedPropertyDeleter remover,
NamedPropertyEnumerator enumerator,
Handle<Value> data) {
if (IsDeadCheck("v8::ObjectTemplate::SetNamedPropertyHandler()")) return;
ENTER_V8;
HandleScope scope;
EnsureConstructor(this);
i::FunctionTemplateInfo* constructor =
i::FunctionTemplateInfo::cast(Utils::OpenHandle(this)->constructor());
i::Handle<i::FunctionTemplateInfo> cons(constructor);
Utils::ToLocal(cons)->SetNamedInstancePropertyHandler(getter,
setter,
query,
remover,
enumerator,
data);
}
void ObjectTemplate::MarkAsUndetectable() {
if (IsDeadCheck("v8::ObjectTemplate::MarkAsUndetectable()")) return;
ENTER_V8;
HandleScope scope;
EnsureConstructor(this);
i::FunctionTemplateInfo* constructor =
i::FunctionTemplateInfo::cast(Utils::OpenHandle(this)->constructor());
i::Handle<i::FunctionTemplateInfo> cons(constructor);
cons->set_undetectable(true);
}
void ObjectTemplate::SetAccessCheckCallbacks(
NamedSecurityCallback named_callback,
IndexedSecurityCallback indexed_callback,
Handle<Value> data,
bool turned_on_by_default) {
if (IsDeadCheck("v8::ObjectTemplate::SetAccessCheckCallbacks()")) return;
ENTER_V8;
HandleScope scope;
EnsureConstructor(this);
i::Handle<i::Struct> struct_info =
i::Factory::NewStruct(i::ACCESS_CHECK_INFO_TYPE);
i::Handle<i::AccessCheckInfo> info =
i::Handle<i::AccessCheckInfo>::cast(struct_info);
info->set_named_callback(*FromCData(named_callback));
info->set_indexed_callback(*FromCData(indexed_callback));
if (data.IsEmpty()) data = v8::Undefined();
info->set_data(*Utils::OpenHandle(*data));
i::FunctionTemplateInfo* constructor =
i::FunctionTemplateInfo::cast(Utils::OpenHandle(this)->constructor());
i::Handle<i::FunctionTemplateInfo> cons(constructor);
cons->set_access_check_info(*info);
cons->set_needs_access_check(turned_on_by_default);
}
void ObjectTemplate::SetIndexedPropertyHandler(
IndexedPropertyGetter getter,
IndexedPropertySetter setter,
IndexedPropertyQuery query,
IndexedPropertyDeleter remover,
IndexedPropertyEnumerator enumerator,
Handle<Value> data) {
if (IsDeadCheck("v8::ObjectTemplate::SetIndexedPropertyHandler()")) return;
ENTER_V8;
HandleScope scope;
EnsureConstructor(this);
i::FunctionTemplateInfo* constructor =
i::FunctionTemplateInfo::cast(Utils::OpenHandle(this)->constructor());
i::Handle<i::FunctionTemplateInfo> cons(constructor);
Utils::ToLocal(cons)->SetIndexedInstancePropertyHandler(getter,
setter,
query,
remover,
enumerator,
data);
}
void ObjectTemplate::SetCallAsFunctionHandler(InvocationCallback callback,
Handle<Value> data) {
if (IsDeadCheck("v8::ObjectTemplate::SetCallAsFunctionHandler()")) return;
ENTER_V8;
HandleScope scope;
EnsureConstructor(this);
i::FunctionTemplateInfo* constructor =
i::FunctionTemplateInfo::cast(Utils::OpenHandle(this)->constructor());
i::Handle<i::FunctionTemplateInfo> cons(constructor);
Utils::ToLocal(cons)->SetInstanceCallAsFunctionHandler(callback, data);
}
int ObjectTemplate::InternalFieldCount() {
if (IsDeadCheck("v8::ObjectTemplate::InternalFieldCount()")) {
return 0;
}
return i::Smi::cast(Utils::OpenHandle(this)->internal_field_count())->value();
}
void ObjectTemplate::SetInternalFieldCount(int value) {
if (IsDeadCheck("v8::ObjectTemplate::SetInternalFieldCount()")) return;
if (!ApiCheck(i::Smi::IsValid(value),
"v8::ObjectTemplate::SetInternalFieldCount()",
"Invalid internal field count")) {
return;
}
ENTER_V8;
if (value > 0) {
// The internal field count is set by the constructor function's
// construct code, so we ensure that there is a constructor
// function to do the setting.
EnsureConstructor(this);
}
Utils::OpenHandle(this)->set_internal_field_count(i::Smi::FromInt(value));
}
// --- S c r i p t D a t a ---
ScriptData* ScriptData::PreCompile(const char* input, int length) {
unibrow::Utf8InputBuffer<> buf(input, length);
return i::PreParse(&buf, NULL);
}
ScriptData* ScriptData::New(unsigned* data, int length) {
return new i::ScriptDataImpl(i::Vector<unsigned>(data, length));
}
// --- S c r i p t ---
Local<Script> Script::Compile(v8::Handle<String> source,
v8::ScriptOrigin* origin,
v8::ScriptData* script_data) {
ON_BAILOUT("v8::Script::Compile()", return Local<Script>());
LOG_API("Script::Compile");
ENTER_V8;
i::Handle<i::String> str = Utils::OpenHandle(*source);
i::Handle<i::Object> name_obj;
int line_offset = 0;
int column_offset = 0;
if (origin != NULL) {
if (!origin->ResourceName().IsEmpty()) {
name_obj = Utils::OpenHandle(*origin->ResourceName());
}
if (!origin->ResourceLineOffset().IsEmpty()) {
line_offset = static_cast<int>(origin->ResourceLineOffset()->Value());
}
if (!origin->ResourceColumnOffset().IsEmpty()) {
column_offset = static_cast<int>(origin->ResourceColumnOffset()->Value());
}
}
EXCEPTION_PREAMBLE();
i::ScriptDataImpl* pre_data = static_cast<i::ScriptDataImpl*>(script_data);
// We assert that the pre-data is sane, even though we can actually
// handle it if it turns out not to be in release mode.
ASSERT(pre_data == NULL || pre_data->SanityCheck());
// If the pre-data isn't sane we simply ignore it
if (pre_data != NULL && !pre_data->SanityCheck()) {
pre_data = NULL;
}
i::Handle<i::JSFunction> boilerplate = i::Compiler::Compile(str,
name_obj,
line_offset,
column_offset,
NULL,
pre_data);
has_pending_exception = boilerplate.is_null();
EXCEPTION_BAILOUT_CHECK(Local<Script>());
i::Handle<i::JSFunction> result =
i::Factory::NewFunctionFromBoilerplate(boilerplate,
i::Top::global_context());
return Local<Script>(ToApi<Script>(result));
}
Local<Script> Script::Compile(v8::Handle<String> source,
v8::Handle<Value> file_name) {
ScriptOrigin origin(file_name);
return Compile(source, &origin);
}
Local<Value> Script::Run() {
ON_BAILOUT("v8::Script::Run()", return Local<Value>());
LOG_API("Script::Run");
ENTER_V8;
i::Object* raw_result = NULL;
{
HandleScope scope;
i::Handle<i::JSFunction> fun = Utils::OpenHandle(this);
EXCEPTION_PREAMBLE();
i::Handle<i::Object> receiver(i::Top::context()->global_proxy());
i::Handle<i::Object> result =
i::Execution::Call(fun, receiver, 0, NULL, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(Local<Value>());
raw_result = *result;
}
i::Handle<i::Object> result(raw_result);
return Utils::ToLocal(result);
}
Local<Value> Script::Id() {
ON_BAILOUT("v8::Script::Id()", return Local<Value>());
LOG_API("Script::Id");
i::Object* raw_id = NULL;
{
HandleScope scope;
i::Handle<i::JSFunction> fun = Utils::OpenHandle(this);
i::Handle<i::Script> script(i::Script::cast(fun->shared()->script()));
i::Handle<i::Object> id(script->id());
raw_id = *id;
}
i::Handle<i::Object> id(raw_id);
return Utils::ToLocal(id);
}
void Script::SetData(v8::Handle<Value> data) {
ON_BAILOUT("v8::Script::SetData()", return);
LOG_API("Script::SetData");
{
HandleScope scope;
i::Handle<i::JSFunction> fun = Utils::OpenHandle(this);
i::Handle<i::Object> raw_data = Utils::OpenHandle(*data);
i::Handle<i::Script> script(i::Script::cast(fun->shared()->script()));
script->set_data(*raw_data);
}
}
// --- E x c e p t i o n s ---
v8::TryCatch::TryCatch()
: next_(i::Top::try_catch_handler()),
exception_(i::Heap::the_hole_value()),
message_(i::Smi::FromInt(0)),
is_verbose_(false),
capture_message_(true),
js_handler_(NULL) {
i::Top::RegisterTryCatchHandler(this);
}
v8::TryCatch::~TryCatch() {
i::Top::UnregisterTryCatchHandler(this);
}
bool v8::TryCatch::HasCaught() const {
return !reinterpret_cast<i::Object*>(exception_)->IsTheHole();
}
v8::Local<Value> v8::TryCatch::Exception() const {
if (HasCaught()) {
// Check for out of memory exception.
i::Object* exception = reinterpret_cast<i::Object*>(exception_);
return v8::Utils::ToLocal(i::Handle<i::Object>(exception));
} else {
return v8::Local<Value>();
}
}
v8::Local<v8::Message> v8::TryCatch::Message() const {
if (HasCaught() && message_ != i::Smi::FromInt(0)) {
i::Object* message = reinterpret_cast<i::Object*>(message_);
return v8::Utils::MessageToLocal(i::Handle<i::Object>(message));
} else {
return v8::Local<v8::Message>();
}
}
void v8::TryCatch::Reset() {
exception_ = i::Heap::the_hole_value();
message_ = i::Smi::FromInt(0);
}
void v8::TryCatch::SetVerbose(bool value) {
is_verbose_ = value;
}
void v8::TryCatch::SetCaptureMessage(bool value) {
capture_message_ = value;
}
// --- M e s s a g e ---
Local<String> Message::Get() const {
ON_BAILOUT("v8::Message::Get()", return Local<String>());
ENTER_V8;
HandleScope scope;
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::String> raw_result = i::MessageHandler::GetMessage(obj);
Local<String> result = Utils::ToLocal(raw_result);
return scope.Close(result);
}
v8::Handle<Value> Message::GetScriptResourceName() const {
if (IsDeadCheck("v8::Message::GetScriptResourceName()")) {
return Local<String>();
}
ENTER_V8;
HandleScope scope;
i::Handle<i::JSObject> obj =
i::Handle<i::JSObject>::cast(Utils::OpenHandle(this));
// Return this.script.name.
i::Handle<i::JSValue> script =
i::Handle<i::JSValue>::cast(GetProperty(obj, "script"));
i::Handle<i::Object> resource_name(i::Script::cast(script->value())->name());
return scope.Close(Utils::ToLocal(resource_name));
}
v8::Handle<Value> Message::GetScriptData() const {
if (IsDeadCheck("v8::Message::GetScriptResourceData()")) {
return Local<Value>();
}
ENTER_V8;
HandleScope scope;
i::Handle<i::JSObject> obj =
i::Handle<i::JSObject>::cast(Utils::OpenHandle(this));
// Return this.script.data.
i::Handle<i::JSValue> script =
i::Handle<i::JSValue>::cast(GetProperty(obj, "script"));
i::Handle<i::Object> data(i::Script::cast(script->value())->data());
return scope.Close(Utils::ToLocal(data));
}
static i::Handle<i::Object> CallV8HeapFunction(const char* name,
i::Handle<i::Object> recv,
int argc,
i::Object** argv[],
bool* has_pending_exception) {
i::Handle<i::String> fmt_str = i::Factory::LookupAsciiSymbol(name);
i::Object* object_fun = i::Top::builtins()->GetProperty(*fmt_str);
i::Handle<i::JSFunction> fun =
i::Handle<i::JSFunction>(i::JSFunction::cast(object_fun));
i::Handle<i::Object> value =
i::Execution::Call(fun, recv, argc, argv, has_pending_exception);
return value;
}
static i::Handle<i::Object> CallV8HeapFunction(const char* name,
i::Handle<i::Object> data,
bool* has_pending_exception) {
i::Object** argv[1] = { data.location() };
return CallV8HeapFunction(name,
i::Top::builtins(),
1,
argv,
has_pending_exception);
}
int Message::GetLineNumber() const {
ON_BAILOUT("v8::Message::GetLineNumber()", return -1);
ENTER_V8;
HandleScope scope;
EXCEPTION_PREAMBLE();
i::Handle<i::Object> result = CallV8HeapFunction("GetLineNumber",
Utils::OpenHandle(this),
&has_pending_exception);
EXCEPTION_BAILOUT_CHECK(0);
return static_cast<int>(result->Number());
}
int Message::GetStartPosition() const {
if (IsDeadCheck("v8::Message::GetStartPosition()")) return 0;
ENTER_V8;
HandleScope scope;
i::Handle<i::JSObject> data_obj = Utils::OpenHandle(this);
return static_cast<int>(GetProperty(data_obj, "startPos")->Number());
}
int Message::GetEndPosition() const {
if (IsDeadCheck("v8::Message::GetEndPosition()")) return 0;
ENTER_V8;
HandleScope scope;
i::Handle<i::JSObject> data_obj = Utils::OpenHandle(this);
return static_cast<int>(GetProperty(data_obj, "endPos")->Number());
}
int Message::GetStartColumn() const {
if (IsDeadCheck("v8::Message::GetStartColumn()")) return 0;
ENTER_V8;
HandleScope scope;
i::Handle<i::JSObject> data_obj = Utils::OpenHandle(this);
EXCEPTION_PREAMBLE();
i::Handle<i::Object> start_col_obj = CallV8HeapFunction(
"GetPositionInLine",
data_obj,
&has_pending_exception);
EXCEPTION_BAILOUT_CHECK(0);
return static_cast<int>(start_col_obj->Number());
}
int Message::GetEndColumn() const {
if (IsDeadCheck("v8::Message::GetEndColumn()")) return 0;
ENTER_V8;
HandleScope scope;
i::Handle<i::JSObject> data_obj = Utils::OpenHandle(this);
EXCEPTION_PREAMBLE();
i::Handle<i::Object> start_col_obj = CallV8HeapFunction(
"GetPositionInLine",
data_obj,
&has_pending_exception);
EXCEPTION_BAILOUT_CHECK(0);
int start = static_cast<int>(GetProperty(data_obj, "startPos")->Number());
int end = static_cast<int>(GetProperty(data_obj, "endPos")->Number());
return static_cast<int>(start_col_obj->Number()) + (end - start);
}
Local<String> Message::GetSourceLine() const {
ON_BAILOUT("v8::Message::GetSourceLine()", return Local<String>());
ENTER_V8;
HandleScope scope;
EXCEPTION_PREAMBLE();
i::Handle<i::Object> result = CallV8HeapFunction("GetSourceLine",
Utils::OpenHandle(this),
&has_pending_exception);
EXCEPTION_BAILOUT_CHECK(Local<v8::String>());
if (result->IsString()) {
return scope.Close(Utils::ToLocal(i::Handle<i::String>::cast(result)));
} else {
return Local<String>();
}
}
void Message::PrintCurrentStackTrace(FILE* out) {
if (IsDeadCheck("v8::Message::PrintCurrentStackTrace()")) return;
ENTER_V8;
i::Top::PrintCurrentStackTrace(out);
}
// --- D a t a ---
bool Value::IsUndefined() const {
if (IsDeadCheck("v8::Value::IsUndefined()")) return false;
return Utils::OpenHandle(this)->IsUndefined();
}
bool Value::IsNull() const {
if (IsDeadCheck("v8::Value::IsNull()")) return false;
return Utils::OpenHandle(this)->IsNull();
}
bool Value::IsTrue() const {
if (IsDeadCheck("v8::Value::IsTrue()")) return false;
return Utils::OpenHandle(this)->IsTrue();
}
bool Value::IsFalse() const {
if (IsDeadCheck("v8::Value::IsFalse()")) return false;
return Utils::OpenHandle(this)->IsFalse();
}
bool Value::IsFunction() const {
if (IsDeadCheck("v8::Value::IsFunction()")) return false;
return Utils::OpenHandle(this)->IsJSFunction();
}
bool Value::IsString() const {
if (IsDeadCheck("v8::Value::IsString()")) return false;
return Utils::OpenHandle(this)->IsString();
}
bool Value::IsArray() const {
if (IsDeadCheck("v8::Value::IsArray()")) return false;
return Utils::OpenHandle(this)->IsJSArray();
}
bool Value::IsObject() const {
if (IsDeadCheck("v8::Value::IsObject()")) return false;
return Utils::OpenHandle(this)->IsJSObject();
}
bool Value::IsNumber() const {
if (IsDeadCheck("v8::Value::IsNumber()")) return false;
return Utils::OpenHandle(this)->IsNumber();
}
bool Value::IsBoolean() const {
if (IsDeadCheck("v8::Value::IsBoolean()")) return false;
return Utils::OpenHandle(this)->IsBoolean();
}
bool Value::IsExternal() const {
if (IsDeadCheck("v8::Value::IsExternal()")) return false;
return Utils::OpenHandle(this)->IsProxy();
}
bool Value::IsInt32() const {
if (IsDeadCheck("v8::Value::IsInt32()")) return false;
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsSmi()) return true;
if (obj->IsNumber()) {
double value = obj->Number();
return i::FastI2D(i::FastD2I(value)) == value;
}
return false;
}
bool Value::IsDate() const {
if (IsDeadCheck("v8::Value::IsDate()")) return false;
i::Handle<i::Object> obj = Utils::OpenHandle(this);
return obj->HasSpecificClassOf(i::Heap::Date_symbol());
}
Local<String> Value::ToString() const {
if (IsDeadCheck("v8::Value::ToString()")) return Local<String>();
LOG_API("ToString");
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::Object> str;
if (obj->IsString()) {
str = obj;
} else {
ENTER_V8;
EXCEPTION_PREAMBLE();
str = i::Execution::ToString(obj, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(Local<String>());
}
return Local<String>(ToApi<String>(str));
}
Local<String> Value::ToDetailString() const {
if (IsDeadCheck("v8::Value::ToDetailString()")) return Local<String>();
LOG_API("ToDetailString");
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::Object> str;
if (obj->IsString()) {
str = obj;
} else {
ENTER_V8;
EXCEPTION_PREAMBLE();
str = i::Execution::ToDetailString(obj, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(Local<String>());
}
return Local<String>(ToApi<String>(str));
}
Local<v8::Object> Value::ToObject() const {
if (IsDeadCheck("v8::Value::ToObject()")) return Local<v8::Object>();
LOG_API("ToObject");
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::Object> val;
if (obj->IsJSObject()) {
val = obj;
} else {
ENTER_V8;
EXCEPTION_PREAMBLE();
val = i::Execution::ToObject(obj, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(Local<v8::Object>());
}
return Local<v8::Object>(ToApi<Object>(val));
}
Local<Boolean> Value::ToBoolean() const {
if (IsDeadCheck("v8::Value::ToBoolean()")) return Local<Boolean>();
LOG_API("ToBoolean");
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsBoolean()) {
return Local<Boolean>(ToApi<Boolean>(obj));
} else {
ENTER_V8;
i::Handle<i::Object> val = i::Execution::ToBoolean(obj);
return Local<Boolean>(ToApi<Boolean>(val));
}
}
Local<Number> Value::ToNumber() const {
if (IsDeadCheck("v8::Value::ToNumber()")) return Local<Number>();
LOG_API("ToNumber");
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::Object> num;
if (obj->IsNumber()) {
num = obj;
} else {
ENTER_V8;
EXCEPTION_PREAMBLE();
num = i::Execution::ToNumber(obj, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(Local<Number>());
}
return Local<Number>(ToApi<Number>(num));
}
Local<Integer> Value::ToInteger() const {
if (IsDeadCheck("v8::Value::ToInteger()")) return Local<Integer>();
LOG_API("ToInteger");
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::Object> num;
if (obj->IsSmi()) {
num = obj;
} else {
ENTER_V8;
EXCEPTION_PREAMBLE();
num = i::Execution::ToInteger(obj, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(Local<Integer>());
}
return Local<Integer>(ToApi<Integer>(num));
}
External* External::Cast(v8::Value* that) {
if (IsDeadCheck("v8::External::Cast()")) return 0;
i::Handle<i::Object> obj = Utils::OpenHandle(that);
ApiCheck(obj->IsProxy(),
"v8::External::Cast()",
"Could not convert to external");
return static_cast<External*>(that);
}
v8::Object* v8::Object::Cast(Value* that) {
if (IsDeadCheck("v8::Object::Cast()")) return 0;
i::Handle<i::Object> obj = Utils::OpenHandle(that);
ApiCheck(obj->IsJSObject(),
"v8::Object::Cast()",
"Could not convert to object");
return static_cast<v8::Object*>(that);
}
v8::Function* v8::Function::Cast(Value* that) {
if (IsDeadCheck("v8::Function::Cast()")) return 0;
i::Handle<i::Object> obj = Utils::OpenHandle(that);
ApiCheck(obj->IsJSFunction(),
"v8::Function::Cast()",
"Could not convert to function");
return static_cast<v8::Function*>(that);
}
v8::String* v8::String::Cast(v8::Value* that) {
if (IsDeadCheck("v8::String::Cast()")) return 0;
i::Handle<i::Object> obj = Utils::OpenHandle(that);
ApiCheck(obj->IsString(),
"v8::String::Cast()",
"Could not convert to string");
return static_cast<v8::String*>(that);
}
v8::Number* v8::Number::Cast(v8::Value* that) {
if (IsDeadCheck("v8::Number::Cast()")) return 0;
i::Handle<i::Object> obj = Utils::OpenHandle(that);
ApiCheck(obj->IsNumber(),
"v8::Number::Cast()",
"Could not convert to number");
return static_cast<v8::Number*>(that);
}
v8::Integer* v8::Integer::Cast(v8::Value* that) {
if (IsDeadCheck("v8::Integer::Cast()")) return 0;
i::Handle<i::Object> obj = Utils::OpenHandle(that);
ApiCheck(obj->IsNumber(),
"v8::Integer::Cast()",
"Could not convert to number");
return static_cast<v8::Integer*>(that);
}
v8::Array* v8::Array::Cast(Value* that) {
if (IsDeadCheck("v8::Array::Cast()")) return 0;
i::Handle<i::Object> obj = Utils::OpenHandle(that);
ApiCheck(obj->IsJSArray(),
"v8::Array::Cast()",
"Could not convert to array");
return static_cast<v8::Array*>(that);
}
v8::Date* v8::Date::Cast(v8::Value* that) {
if (IsDeadCheck("v8::Date::Cast()")) return 0;
i::Handle<i::Object> obj = Utils::OpenHandle(that);
ApiCheck(obj->HasSpecificClassOf(i::Heap::Date_symbol()),
"v8::Date::Cast()",
"Could not convert to date");
return static_cast<v8::Date*>(that);
}
bool Value::BooleanValue() const {
if (IsDeadCheck("v8::Value::BooleanValue()")) return false;
LOG_API("BooleanValue");
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsBoolean()) {
return obj->IsTrue();
} else {
ENTER_V8;
i::Handle<i::Object> value = i::Execution::ToBoolean(obj);
return value->IsTrue();
}
}
double Value::NumberValue() const {
if (IsDeadCheck("v8::Value::NumberValue()")) return i::OS::nan_value();
LOG_API("NumberValue");
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::Object> num;
if (obj->IsNumber()) {
num = obj;
} else {
ENTER_V8;
EXCEPTION_PREAMBLE();
num = i::Execution::ToNumber(obj, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(i::OS::nan_value());
}
return num->Number();
}
int64_t Value::IntegerValue() const {
if (IsDeadCheck("v8::Value::IntegerValue()")) return 0;
LOG_API("IntegerValue");
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::Object> num;
if (obj->IsNumber()) {
num = obj;
} else {
ENTER_V8;
EXCEPTION_PREAMBLE();
num = i::Execution::ToInteger(obj, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(0);
}
if (num->IsSmi()) {
return i::Smi::cast(*num)->value();
} else {
return static_cast<int64_t>(num->Number());
}
}
Local<Int32> Value::ToInt32() const {
if (IsDeadCheck("v8::Value::ToInt32()")) return Local<Int32>();
LOG_API("ToInt32");
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::Object> num;
if (obj->IsSmi()) {
num = obj;
} else {
ENTER_V8;
EXCEPTION_PREAMBLE();
num = i::Execution::ToInt32(obj, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(Local<Int32>());
}
return Local<Int32>(ToApi<Int32>(num));
}
Local<Uint32> Value::ToUint32() const {
if (IsDeadCheck("v8::Value::ToUint32()")) return Local<Uint32>();
LOG_API("ToUInt32");
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::Object> num;
if (obj->IsSmi()) {
num = obj;
} else {
ENTER_V8;
EXCEPTION_PREAMBLE();
num = i::Execution::ToUint32(obj, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(Local<Uint32>());
}
return Local<Uint32>(ToApi<Uint32>(num));
}
Local<Uint32> Value::ToArrayIndex() const {
if (IsDeadCheck("v8::Value::ToArrayIndex()")) return Local<Uint32>();
LOG_API("ToArrayIndex");
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsSmi()) {
if (i::Smi::cast(*obj)->value() >= 0) return Utils::Uint32ToLocal(obj);
return Local<Uint32>();
}
ENTER_V8;
EXCEPTION_PREAMBLE();
i::Handle<i::Object> string_obj =
i::Execution::ToString(obj, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(Local<Uint32>());
i::Handle<i::String> str = i::Handle<i::String>::cast(string_obj);
uint32_t index;
if (str->AsArrayIndex(&index)) {
i::Handle<i::Object> value;
if (index <= static_cast<uint32_t>(i::Smi::kMaxValue)) {
value = i::Handle<i::Object>(i::Smi::FromInt(index));
} else {
value = i::Factory::NewNumber(index);
}
return Utils::Uint32ToLocal(value);
}
return Local<Uint32>();
}
int32_t Value::Int32Value() const {
if (IsDeadCheck("v8::Value::Int32Value()")) return 0;
LOG_API("Int32Value");
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsSmi()) {
return i::Smi::cast(*obj)->value();
} else {
LOG_API("Int32Value (slow)");
ENTER_V8;
EXCEPTION_PREAMBLE();
i::Handle<i::Object> num =
i::Execution::ToInt32(obj, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(0);
if (num->IsSmi()) {
return i::Smi::cast(*num)->value();
} else {
return static_cast<int32_t>(num->Number());
}
}
}
bool Value::Equals(Handle<Value> that) const {
if (IsDeadCheck("v8::Value::Equals()")
|| EmptyCheck("v8::Value::Equals()", this)
|| EmptyCheck("v8::Value::Equals()", that)) {
return false;
}
LOG_API("Equals");
ENTER_V8;
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::Object> other = Utils::OpenHandle(*that);
i::Object** args[1] = { other.location() };
EXCEPTION_PREAMBLE();
i::Handle<i::Object> result =
CallV8HeapFunction("EQUALS", obj, 1, args, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(false);
return *result == i::Smi::FromInt(i::EQUAL);
}
bool Value::StrictEquals(Handle<Value> that) const {
if (IsDeadCheck("v8::Value::StrictEquals()")
|| EmptyCheck("v8::Value::StrictEquals()", this)
|| EmptyCheck("v8::Value::StrictEquals()", that)) {
return false;
}
LOG_API("StrictEquals");
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::Object> other = Utils::OpenHandle(*that);
// Must check HeapNumber first, since NaN !== NaN.
if (obj->IsHeapNumber()) {
if (!other->IsNumber()) return false;
double x = obj->Number();
double y = other->Number();
// Must check explicitly for NaN:s on Windows, but -0 works fine.
return x == y && !isnan(x) && !isnan(y);
} else if (*obj == *other) { // Also covers Booleans.
return true;
} else if (obj->IsSmi()) {
return other->IsNumber() && obj->Number() == other->Number();
} else if (obj->IsString()) {
return other->IsString() &&
i::String::cast(*obj)->Equals(i::String::cast(*other));
} else if (obj->IsUndefined() || obj->IsUndetectableObject()) {
return other->IsUndefined() || other->IsUndetectableObject();
} else {
return false;
}
}
uint32_t Value::Uint32Value() const {
if (IsDeadCheck("v8::Value::Uint32Value()")) return 0;
LOG_API("Uint32Value");
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsSmi()) {
return i::Smi::cast(*obj)->value();
} else {
ENTER_V8;
EXCEPTION_PREAMBLE();
i::Handle<i::Object> num =
i::Execution::ToUint32(obj, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(0);
if (num->IsSmi()) {
return i::Smi::cast(*num)->value();
} else {
return static_cast<uint32_t>(num->Number());
}
}
}
bool v8::Object::Set(v8::Handle<Value> key, v8::Handle<Value> value,
v8::PropertyAttribute attribs) {
ON_BAILOUT("v8::Object::Set()", return false);
ENTER_V8;
i::Handle<i::Object> self = Utils::OpenHandle(this);
i::Handle<i::Object> key_obj = Utils::OpenHandle(*key);
i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
EXCEPTION_PREAMBLE();
i::Handle<i::Object> obj = i::SetProperty(
self,
key_obj,
value_obj,
static_cast<PropertyAttributes>(attribs));
has_pending_exception = obj.is_null();
EXCEPTION_BAILOUT_CHECK(false);
return true;
}
bool v8::Object::ForceSet(v8::Handle<Value> key,
v8::Handle<Value> value,
v8::PropertyAttribute attribs) {
ON_BAILOUT("v8::Object::ForceSet()", return false);
ENTER_V8;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> key_obj = Utils::OpenHandle(*key);
i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
EXCEPTION_PREAMBLE();
i::Handle<i::Object> obj = i::ForceSetProperty(
self,
key_obj,
value_obj,
static_cast<PropertyAttributes>(attribs));
has_pending_exception = obj.is_null();
EXCEPTION_BAILOUT_CHECK(false);
return true;
}
bool v8::Object::ForceDelete(v8::Handle<Value> key) {
ON_BAILOUT("v8::Object::ForceDelete()", return false);
ENTER_V8;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> key_obj = Utils::OpenHandle(*key);
EXCEPTION_PREAMBLE();
i::Handle<i::Object> obj = i::ForceDeleteProperty(self, key_obj);
has_pending_exception = obj.is_null();
EXCEPTION_BAILOUT_CHECK(false);
return obj->IsTrue();
}
Local<Value> v8::Object::Get(v8::Handle<Value> key) {
ON_BAILOUT("v8::Object::Get()", return Local<v8::Value>());
ENTER_V8;
i::Handle<i::Object> self = Utils::OpenHandle(this);
i::Handle<i::Object> key_obj = Utils::OpenHandle(*key);
EXCEPTION_PREAMBLE();
i::Handle<i::Object> result = i::GetProperty(self, key_obj);
has_pending_exception = result.is_null();
EXCEPTION_BAILOUT_CHECK(Local<Value>());
return Utils::ToLocal(result);
}
Local<Value> v8::Object::GetPrototype() {
ON_BAILOUT("v8::Object::GetPrototype()", return Local<v8::Value>());
ENTER_V8;
i::Handle<i::Object> self = Utils::OpenHandle(this);
i::Handle<i::Object> result = i::GetPrototype(self);
return Utils::ToLocal(result);
}
Local<Object> v8::Object::FindInstanceInPrototypeChain(
v8::Handle<FunctionTemplate> tmpl) {
ON_BAILOUT("v8::Object::FindInstanceInPrototypeChain()",
return Local<v8::Object>());
ENTER_V8;
i::JSObject* object = *Utils::OpenHandle(this);
i::FunctionTemplateInfo* tmpl_info = *Utils::OpenHandle(*tmpl);
while (!object->IsInstanceOf(tmpl_info)) {
i::Object* prototype = object->GetPrototype();
if (!prototype->IsJSObject()) return Local<Object>();
object = i::JSObject::cast(prototype);
}
return Utils::ToLocal(i::Handle<i::JSObject>(object));
}
Local<Array> v8::Object::GetPropertyNames() {
ON_BAILOUT("v8::Object::GetPropertyNames()", return Local<v8::Array>());
ENTER_V8;
v8::HandleScope scope;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::FixedArray> value = i::GetKeysInFixedArrayFor(self);
// Because we use caching to speed up enumeration it is important
// to never change the result of the basic enumeration function so
// we clone the result.
i::Handle<i::FixedArray> elms = i::Factory::CopyFixedArray(value);
i::Handle<i::JSArray> result = i::Factory::NewJSArrayWithElements(elms);
return scope.Close(Utils::ToLocal(result));
}
Local<String> v8::Object::ObjectProtoToString() {
ON_BAILOUT("v8::Object::ObjectProtoToString()", return Local<v8::String>());
ENTER_V8;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> name(self->class_name());
// Native implementation of Object.prototype.toString (v8natives.js):
// var c = %ClassOf(this);
// if (c === 'Arguments') c = 'Object';
// return "[object " + c + "]";
if (!name->IsString()) {
return v8::String::New("[object ]");
} else {
i::Handle<i::String> class_name = i::Handle<i::String>::cast(name);
if (class_name->IsEqualTo(i::CStrVector("Arguments"))) {
return v8::String::New("[object Object]");
} else {
const char* prefix = "[object ";
Local<String> str = Utils::ToLocal(class_name);
const char* postfix = "]";
size_t prefix_len = strlen(prefix);
size_t str_len = str->Length();
size_t postfix_len = strlen(postfix);
size_t buf_len = prefix_len + str_len + postfix_len;
char* buf = i::NewArray<char>(buf_len);
// Write prefix.
char* ptr = buf;
memcpy(ptr, prefix, prefix_len * v8::internal::kCharSize);
ptr += prefix_len;
// Write real content.
str->WriteAscii(ptr, 0, str_len);
ptr += str_len;
// Write postfix.
memcpy(ptr, postfix, postfix_len * v8::internal::kCharSize);
// Copy the buffer into a heap-allocated string and return it.
Local<String> result = v8::String::New(buf, buf_len);
i::DeleteArray(buf);
return result;
}
}
}
bool v8::Object::Delete(v8::Handle<String> key) {
ON_BAILOUT("v8::Object::Delete()", return false);
ENTER_V8;
HandleScope scope;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
return i::DeleteProperty(self, key_obj)->IsTrue();
}
bool v8::Object::Has(v8::Handle<String> key) {
ON_BAILOUT("v8::Object::Has()", return false);
ENTER_V8;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
return self->HasProperty(*key_obj);
}
bool v8::Object::Delete(uint32_t index) {
ON_BAILOUT("v8::Object::DeleteProperty()", return false);
ENTER_V8;
HandleScope scope;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
return i::DeleteElement(self, index)->IsTrue();
}
bool v8::Object::Has(uint32_t index) {
ON_BAILOUT("v8::Object::HasProperty()", return false);
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
return self->HasElement(index);
}
bool v8::Object::HasRealNamedProperty(Handle<String> key) {
ON_BAILOUT("v8::Object::HasRealNamedProperty()", return false);
return Utils::OpenHandle(this)->HasRealNamedProperty(
*Utils::OpenHandle(*key));
}
bool v8::Object::HasRealIndexedProperty(uint32_t index) {
ON_BAILOUT("v8::Object::HasRealIndexedProperty()", return false);
return Utils::OpenHandle(this)->HasRealElementProperty(index);
}
bool v8::Object::HasRealNamedCallbackProperty(Handle<String> key) {
ON_BAILOUT("v8::Object::HasRealNamedCallbackProperty()", return false);
ENTER_V8;
return Utils::OpenHandle(this)->HasRealNamedCallbackProperty(
*Utils::OpenHandle(*key));
}
bool v8::Object::HasNamedLookupInterceptor() {
ON_BAILOUT("v8::Object::HasNamedLookupInterceptor()", return false);
return Utils::OpenHandle(this)->HasNamedInterceptor();
}
bool v8::Object::HasIndexedLookupInterceptor() {
ON_BAILOUT("v8::Object::HasIndexedLookupInterceptor()", return false);
return Utils::OpenHandle(this)->HasIndexedInterceptor();
}
Handle<Value> v8::Object::GetRealNamedPropertyInPrototypeChain(
Handle<String> key) {
ON_BAILOUT("v8::Object::GetRealNamedPropertyInPrototypeChain()",
return Local<Value>());
ENTER_V8;
i::Handle<i::JSObject> self_obj = Utils::OpenHandle(this);
i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
i::LookupResult lookup;
self_obj->LookupRealNamedPropertyInPrototypes(*key_obj, &lookup);
if (lookup.IsValid()) {
PropertyAttributes attributes;
i::Handle<i::Object> result(self_obj->GetProperty(*self_obj,
&lookup,
*key_obj,
&attributes));
return Utils::ToLocal(result);
}
return Local<Value>(); // No real property was found in prototype chain.
}
// Turns on access checks by copying the map and setting the check flag.
// Because the object gets a new map, existing inline cache caching
// the old map of this object will fail.
void v8::Object::TurnOnAccessCheck() {
ON_BAILOUT("v8::Object::TurnOnAccessCheck()", return);
ENTER_V8;
i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
i::Handle<i::Map> new_map =
i::Factory::CopyMapDropTransitions(i::Handle<i::Map>(obj->map()));
new_map->set_is_access_check_needed(true);
obj->set_map(*new_map);
}
Local<v8::Object> v8::Object::Clone() {
ON_BAILOUT("v8::Object::Clone()", return Local<Object>());
ENTER_V8;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
EXCEPTION_PREAMBLE();
i::Handle<i::JSObject> result = i::Copy(self);
has_pending_exception = result.is_null();
EXCEPTION_BAILOUT_CHECK(Local<Object>());
return Utils::ToLocal(result);
}
int v8::Object::GetIdentityHash() {
ON_BAILOUT("v8::Object::GetIdentityHash()", return 0);
ENTER_V8;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> hidden_props(i::GetHiddenProperties(self, true));
i::Handle<i::Object> hash_symbol = i::Factory::identity_hash_symbol();
i::Handle<i::Object> hash = i::GetProperty(hidden_props, hash_symbol);
int hash_value;
if (hash->IsSmi()) {
hash_value = i::Smi::cast(*hash)->value();
} else {
int attempts = 0;
do {
// Generate a random 32-bit hash value but limit range to fit
// within a smi.
hash_value = i::V8::Random() & i::Smi::kMaxValue;
attempts++;
} while (hash_value == 0 && attempts < 30);
hash_value = hash_value != 0 ? hash_value : 1; // never return 0
i::SetProperty(hidden_props,
hash_symbol,
i::Handle<i::Object>(i::Smi::FromInt(hash_value)),
static_cast<PropertyAttributes>(None));
}
return hash_value;
}
bool v8::Object::SetHiddenValue(v8::Handle<v8::String> key,
v8::Handle<v8::Value> value) {
ON_BAILOUT("v8::Object::SetHiddenValue()", return false);
ENTER_V8;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> hidden_props(i::GetHiddenProperties(self, true));
i::Handle<i::Object> key_obj = Utils::OpenHandle(*key);
i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
EXCEPTION_PREAMBLE();
i::Handle<i::Object> obj = i::SetProperty(
hidden_props,
key_obj,
value_obj,
static_cast<PropertyAttributes>(None));
has_pending_exception = obj.is_null();
EXCEPTION_BAILOUT_CHECK(false);
return true;
}
v8::Local<v8::Value> v8::Object::GetHiddenValue(v8::Handle<v8::String> key) {
ON_BAILOUT("v8::Object::GetHiddenValue()", return Local<v8::Value>());
ENTER_V8;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> hidden_props(i::GetHiddenProperties(self, false));
if (hidden_props->IsUndefined()) {
return v8::Local<v8::Value>();
}
i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
EXCEPTION_PREAMBLE();
i::Handle<i::Object> result = i::GetProperty(hidden_props, key_obj);
has_pending_exception = result.is_null();
EXCEPTION_BAILOUT_CHECK(v8::Local<v8::Value>());
if (result->IsUndefined()) {
return v8::Local<v8::Value>();
}
return Utils::ToLocal(result);
}
bool v8::Object::DeleteHiddenValue(v8::Handle<v8::String> key) {
ON_BAILOUT("v8::DeleteHiddenValue()", return false);
ENTER_V8;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> hidden_props(i::GetHiddenProperties(self, false));
if (hidden_props->IsUndefined()) {
return true;
}
i::Handle<i::JSObject> js_obj(i::JSObject::cast(*hidden_props));
i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
return i::DeleteProperty(js_obj, key_obj)->IsTrue();
}
void v8::Object::SetIndexedPropertiesToPixelData(uint8_t* data, int length) {
ON_BAILOUT("v8::SetElementsToPixelData()", return);
ENTER_V8;
if (!ApiCheck(i::Smi::IsValid(length),
"v8::Object::SetIndexedPropertiesToPixelData()",
"length exceeds max acceptable value")) {
return;
}
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
if (!ApiCheck(!self->IsJSArray(),
"v8::Object::SetIndexedPropertiesToPixelData()",
"JSArray is not supported")) {
return;
}
i::Handle<i::PixelArray> pixels = i::Factory::NewPixelArray(length, data);
self->set_elements(*pixels);
}
Local<v8::Object> Function::NewInstance() const {
return NewInstance(0, NULL);
}
Local<v8::Object> Function::NewInstance(int argc,
v8::Handle<v8::Value> argv[]) const {
ON_BAILOUT("v8::Function::NewInstance()", return Local<v8::Object>());
LOG_API("Function::NewInstance");
ENTER_V8;
HandleScope scope;
i::Handle<i::JSFunction> function = Utils::OpenHandle(this);
STATIC_ASSERT(sizeof(v8::Handle<v8::Value>) == sizeof(i::Object**));
i::Object*** args = reinterpret_cast<i::Object***>(argv);
EXCEPTION_PREAMBLE();
i::Handle<i::Object> returned =
i::Execution::New(function, argc, args, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(Local<v8::Object>());
return scope.Close(Utils::ToLocal(i::Handle<i::JSObject>::cast(returned)));
}
Local<v8::Value> Function::Call(v8::Handle<v8::Object> recv, int argc,
v8::Handle<v8::Value> argv[]) {
ON_BAILOUT("v8::Function::Call()", return Local<v8::Value>());
LOG_API("Function::Call");
ENTER_V8;
i::Object* raw_result = NULL;
{
HandleScope scope;
i::Handle<i::JSFunction> fun = Utils::OpenHandle(this);
i::Handle<i::Object> recv_obj = Utils::OpenHandle(*recv);
STATIC_ASSERT(sizeof(v8::Handle<v8::Value>) == sizeof(i::Object**));
i::Object*** args = reinterpret_cast<i::Object***>(argv);
EXCEPTION_PREAMBLE();
i::Handle<i::Object> returned =
i::Execution::Call(fun, recv_obj, argc, args, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(Local<Object>());
raw_result = *returned;
}
i::Handle<i::Object> result(raw_result);
return Utils::ToLocal(result);
}
void Function::SetName(v8::Handle<v8::String> name) {
ENTER_V8;
i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
func->shared()->set_name(*Utils::OpenHandle(*name));
}
Handle<Value> Function::GetName() const {
i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
return Utils::ToLocal(i::Handle<i::Object>(func->shared()->name()));
}
int String::Length() const {
if (IsDeadCheck("v8::String::Length()")) return 0;
return Utils::OpenHandle(this)->length();
}
int String::Utf8Length() const {
if (IsDeadCheck("v8::String::Utf8Length()")) return 0;
return Utils::OpenHandle(this)->Utf8Length();
}
int String::WriteUtf8(char* buffer, int capacity) const {
if (IsDeadCheck("v8::String::WriteUtf8()")) return 0;
LOG_API("String::WriteUtf8");
ENTER_V8;
i::Handle<i::String> str = Utils::OpenHandle(this);
write_input_buffer.Reset(0, *str);
int len = str->length();
// Encode the first K - 3 bytes directly into the buffer since we
// know there's room for them. If no capacity is given we copy all
// of them here.
int fast_end = capacity - (unibrow::Utf8::kMaxEncodedSize - 1);
int i;
int pos = 0;
for (i = 0; i < len && (capacity == -1 || pos < fast_end); i++) {
i::uc32 c = write_input_buffer.GetNext();
int written = unibrow::Utf8::Encode(buffer + pos, c);
pos += written;
}
if (i < len) {
// For the last characters we need to check the length for each one
// because they may be longer than the remaining space in the
// buffer.
char intermediate[unibrow::Utf8::kMaxEncodedSize];
for (; i < len && pos < capacity; i++) {
i::uc32 c = write_input_buffer.GetNext();
int written = unibrow::Utf8::Encode(intermediate, c);
if (pos + written <= capacity) {
for (int j = 0; j < written; j++)
buffer[pos + j] = intermediate[j];
pos += written;
} else {
// We've reached the end of the buffer
break;
}
}
}
if (i == len && (capacity == -1 || pos < capacity))
buffer[pos++] = '\0';
return pos;
}
int String::WriteAscii(char* buffer, int start, int length) const {
if (IsDeadCheck("v8::String::WriteAscii()")) return 0;
LOG_API("String::WriteAscii");
ENTER_V8;
ASSERT(start >= 0 && length >= -1);
i::Handle<i::String> str = Utils::OpenHandle(this);
// Flatten the string for efficiency. This applies whether we are
// using StringInputBuffer or Get(i) to access the characters.
str->TryFlattenIfNotFlat();
int end = length;
if ( (length == -1) || (length > str->length() - start) )
end = str->length() - start;
if (end < 0) return 0;
write_input_buffer.Reset(start, *str);
int i;
for (i = 0; i < end; i++) {
char c = static_cast<char>(write_input_buffer.GetNext());
if (c == '\0') c = ' ';
buffer[i] = c;
}
if (length == -1 || i < length)
buffer[i] = '\0';
return i;
}
int String::Write(uint16_t* buffer, int start, int length) const {
if (IsDeadCheck("v8::String::Write()")) return 0;
LOG_API("String::Write");
ENTER_V8;
ASSERT(start >= 0 && length >= -1);
i::Handle<i::String> str = Utils::OpenHandle(this);
// Flatten the string for efficiency. This applies whether we are
// using StringInputBuffer or Get(i) to access the characters.
str->TryFlattenIfNotFlat();
int end = length;
if ( (length == -1) || (length > str->length() - start) )
end = str->length() - start;
if (end < 0) return 0;
write_input_buffer.Reset(start, *str);
int i;
for (i = 0; i < end; i++)
buffer[i] = write_input_buffer.GetNext();
if (length == -1 || i < length)
buffer[i] = '\0';
return i;
}
bool v8::String::IsExternal() const {
EnsureInitialized("v8::String::IsExternal()");
i::Handle<i::String> str = Utils::OpenHandle(this);
return i::StringShape(*str).IsExternalTwoByte();
}
bool v8::String::IsExternalAscii() const {
EnsureInitialized("v8::String::IsExternalAscii()");
i::Handle<i::String> str = Utils::OpenHandle(this);
return i::StringShape(*str).IsExternalAscii();
}
v8::String::ExternalStringResource*
v8::String::GetExternalStringResource() const {
EnsureInitialized("v8::String::GetExternalStringResource()");
i::Handle<i::String> str = Utils::OpenHandle(this);
if (i::StringShape(*str).IsExternalTwoByte()) {
void* resource = i::Handle<i::ExternalTwoByteString>::cast(str)->resource();
return reinterpret_cast<ExternalStringResource*>(resource);
} else {
return NULL;
}
}
v8::String::ExternalAsciiStringResource*
v8::String::GetExternalAsciiStringResource() const {
EnsureInitialized("v8::String::GetExternalAsciiStringResource()");
i::Handle<i::String> str = Utils::OpenHandle(this);
if (i::StringShape(*str).IsExternalAscii()) {
void* resource = i::Handle<i::ExternalAsciiString>::cast(str)->resource();
return reinterpret_cast<ExternalAsciiStringResource*>(resource);
} else {
return NULL;
}
}
double Number::Value() const {
if (IsDeadCheck("v8::Number::Value()")) return 0;
i::Handle<i::Object> obj = Utils::OpenHandle(this);
return obj->Number();
}
bool Boolean::Value() const {
if (IsDeadCheck("v8::Boolean::Value()")) return false;
i::Handle<i::Object> obj = Utils::OpenHandle(this);
return obj->IsTrue();
}
int64_t Integer::Value() const {
if (IsDeadCheck("v8::Integer::Value()")) return 0;
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsSmi()) {
return i::Smi::cast(*obj)->value();
} else {
return static_cast<int64_t>(obj->Number());
}
}
int32_t Int32::Value() const {
if (IsDeadCheck("v8::Int32::Value()")) return 0;
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsSmi()) {
return i::Smi::cast(*obj)->value();
} else {
return static_cast<int32_t>(obj->Number());
}
}
int v8::Object::InternalFieldCount() {
if (IsDeadCheck("v8::Object::InternalFieldCount()")) return 0;
i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
return obj->GetInternalFieldCount();
}
Local<Value> v8::Object::GetInternalField(int index) {
if (IsDeadCheck("v8::Object::GetInternalField()")) return Local<Value>();
i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
if (!ApiCheck(index < obj->GetInternalFieldCount(),
"v8::Object::GetInternalField()",
"Reading internal field out of bounds")) {
return Local<Value>();
}
i::Handle<i::Object> value(obj->GetInternalField(index));
return Utils::ToLocal(value);
}
void v8::Object::SetInternalField(int index, v8::Handle<Value> value) {
if (IsDeadCheck("v8::Object::SetInternalField()")) return;
i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
if (!ApiCheck(index < obj->GetInternalFieldCount(),
"v8::Object::SetInternalField()",
"Writing internal field out of bounds")) {
return;
}
ENTER_V8;
i::Handle<i::Object> val = Utils::OpenHandle(*value);
obj->SetInternalField(index, *val);
}
void* v8::Object::GetPointerFromInternalField(int index) {
i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
i::Object* pointer = obj->GetInternalField(index);
if (pointer->IsSmi()) {
// Fast case, aligned native pointer.
return pointer;
}
// Read from uninitialized field.
if (!pointer->IsProxy()) {
// Play safe even if it's something unexpected.
ASSERT(pointer->IsUndefined());
return NULL;
}
// Unaligned native pointer.
return reinterpret_cast<void*>(i::Proxy::cast(pointer)->proxy());
}
void v8::Object::SetPointerInInternalField(int index, void* value) {
i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
i::Object* as_object = reinterpret_cast<i::Object*>(value);
if (as_object->IsSmi()) {
// Aligned pointer, store as is.
obj->SetInternalField(index, as_object);
} else {
// Currently internal fields are used by DOM wrappers which only
// get garbage collected by the mark-sweep collector, so we
// pretenure the proxy.
HandleScope scope;
i::Handle<i::Proxy> proxy =
i::Factory::NewProxy(reinterpret_cast<i::Address>(value), i::TENURED);
if (!proxy.is_null()) obj->SetInternalField(index, *proxy);
}
}
// --- E n v i r o n m e n t ---
bool v8::V8::Initialize() {
if (i::V8::IsRunning()) return true;
ENTER_V8;
HandleScope scope;
if (i::Snapshot::Initialize()) {
return true;
} else {
return i::V8::Initialize(NULL);
}
}
bool v8::V8::Dispose() {
i::V8::TearDown();
return true;
}
const char* v8::V8::GetVersion() {
static v8::internal::EmbeddedVector<char, 128> buffer;
v8::internal::Version::GetString(buffer);
return buffer.start();
}
static i::Handle<i::FunctionTemplateInfo>
EnsureConstructor(i::Handle<i::ObjectTemplateInfo> templ) {
if (templ->constructor()->IsUndefined()) {
Local<FunctionTemplate> constructor = FunctionTemplate::New();
Utils::OpenHandle(*constructor)->set_instance_template(*templ);
templ->set_constructor(*Utils::OpenHandle(*constructor));
}
return i::Handle<i::FunctionTemplateInfo>(
i::FunctionTemplateInfo::cast(templ->constructor()));
}
Persistent<Context> v8::Context::New(
v8::ExtensionConfiguration* extensions,
v8::Handle<ObjectTemplate> global_template,
v8::Handle<Value> global_object) {
EnsureInitialized("v8::Context::New()");
LOG_API("Context::New");
ON_BAILOUT("v8::Context::New()", return Persistent<Context>());
// Enter V8 via an ENTER_V8 scope.
i::Handle<i::Context> env;
{
ENTER_V8;
#if defined(ANDROID)
// On mobile device, full GC is expensive, leave it to the system to
// decide when should make a full GC.
#else
// Give the heap a chance to cleanup if we've disposed contexts.
i::Heap::CollectAllGarbageIfContextDisposed();
#endif
v8::Handle<ObjectTemplate> proxy_template = global_template;
i::Handle<i::FunctionTemplateInfo> proxy_constructor;
i::Handle<i::FunctionTemplateInfo> global_constructor;
if (!global_template.IsEmpty()) {
// Make sure that the global_template has a constructor.
global_constructor =
EnsureConstructor(Utils::OpenHandle(*global_template));
// Create a fresh template for the global proxy object.
proxy_template = ObjectTemplate::New();
proxy_constructor =
EnsureConstructor(Utils::OpenHandle(*proxy_template));
// Set the global template to be the prototype template of
// global proxy template.
proxy_constructor->set_prototype_template(
*Utils::OpenHandle(*global_template));
// Migrate security handlers from global_template to
// proxy_template. Temporarily removing access check
// information from the global template.
if (!global_constructor->access_check_info()->IsUndefined()) {
proxy_constructor->set_access_check_info(
global_constructor->access_check_info());
proxy_constructor->set_needs_access_check(
global_constructor->needs_access_check());
global_constructor->set_needs_access_check(false);
global_constructor->set_access_check_info(i::Heap::undefined_value());
}
}
// Create the environment.
env = i::Bootstrapper::CreateEnvironment(
Utils::OpenHandle(*global_object),
proxy_template,
extensions);
// Restore the access check info on the global template.
if (!global_template.IsEmpty()) {
ASSERT(!global_constructor.is_null());
ASSERT(!proxy_constructor.is_null());
global_constructor->set_access_check_info(
proxy_constructor->access_check_info());
global_constructor->set_needs_access_check(
proxy_constructor->needs_access_check());
}
}
// Leave V8.
if (!ApiCheck(!env.is_null(),
"v8::Context::New()",
"Could not initialize environment"))
return Persistent<Context>();
return Persistent<Context>(Utils::ToLocal(env));
}
void v8::Context::SetSecurityToken(Handle<Value> token) {
if (IsDeadCheck("v8::Context::SetSecurityToken()")) return;
ENTER_V8;
i::Handle<i::Context> env = Utils::OpenHandle(this);
i::Handle<i::Object> token_handle = Utils::OpenHandle(*token);
env->set_security_token(*token_handle);
}
void v8::Context::UseDefaultSecurityToken() {
if (IsDeadCheck("v8::Context::UseDefaultSecurityToken()")) return;
ENTER_V8;
i::Handle<i::Context> env = Utils::OpenHandle(this);
env->set_security_token(env->global());
}
Handle<Value> v8::Context::GetSecurityToken() {
if (IsDeadCheck("v8::Context::GetSecurityToken()")) return Handle<Value>();
i::Handle<i::Context> env = Utils::OpenHandle(this);
i::Object* security_token = env->security_token();
i::Handle<i::Object> token_handle(security_token);
return Utils::ToLocal(token_handle);
}
bool Context::HasOutOfMemoryException() {
i::Handle<i::Context> env = Utils::OpenHandle(this);
return env->has_out_of_memory();
}
bool Context::InContext() {
return i::Top::context() != NULL;
}
v8::Local<v8::Context> Context::GetEntered() {
if (IsDeadCheck("v8::Context::GetEntered()")) return Local<Context>();
i::Handle<i::Object> last = thread_local.LastEnteredContext();
if (last.is_null()) return Local<Context>();
i::Handle<i::Context> context = i::Handle<i::Context>::cast(last);
return Utils::ToLocal(context);
}
v8::Local<v8::Context> Context::GetCurrent() {
if (IsDeadCheck("v8::Context::GetCurrent()")) return Local<Context>();
i::Handle<i::Context> context(i::Top::global_context());
return Utils::ToLocal(context);
}
v8::Local<v8::Context> Context::GetCalling() {
if (IsDeadCheck("v8::Context::GetCalling()")) return Local<Context>();
i::Handle<i::Context> context(i::Top::GetCallingGlobalContext());
return Utils::ToLocal(context);
}
v8::Local<v8::Object> Context::Global() {
if (IsDeadCheck("v8::Context::Global()")) return Local<v8::Object>();
i::Object** ctx = reinterpret_cast<i::Object**>(this);
i::Handle<i::Context> context =
i::Handle<i::Context>::cast(i::Handle<i::Object>(ctx));
i::Handle<i::Object> global(context->global_proxy());
return Utils::ToLocal(i::Handle<i::JSObject>::cast(global));
}
void Context::DetachGlobal() {
if (IsDeadCheck("v8::Context::DetachGlobal()")) return;
ENTER_V8;
i::Object** ctx = reinterpret_cast<i::Object**>(this);
i::Handle<i::Context> context =
i::Handle<i::Context>::cast(i::Handle<i::Object>(ctx));
i::Bootstrapper::DetachGlobal(context);
}
Local<v8::Object> ObjectTemplate::NewInstance() {
ON_BAILOUT("v8::ObjectTemplate::NewInstance()", return Local<v8::Object>());
LOG_API("ObjectTemplate::NewInstance");
ENTER_V8;
EXCEPTION_PREAMBLE();
i::Handle<i::Object> obj =
i::Execution::InstantiateObject(Utils::OpenHandle(this),
&has_pending_exception);
EXCEPTION_BAILOUT_CHECK(Local<v8::Object>());
return Utils::ToLocal(i::Handle<i::JSObject>::cast(obj));
}
Local<v8::Function> FunctionTemplate::GetFunction() {
ON_BAILOUT("v8::FunctionTemplate::GetFunction()",
return Local<v8::Function>());
LOG_API("FunctionTemplate::GetFunction");
ENTER_V8;
EXCEPTION_PREAMBLE();
i::Handle<i::Object> obj =
i::Execution::InstantiateFunction(Utils::OpenHandle(this),
&has_pending_exception);
EXCEPTION_BAILOUT_CHECK(Local<v8::Function>());
return Utils::ToLocal(i::Handle<i::JSFunction>::cast(obj));
}
bool FunctionTemplate::HasInstance(v8::Handle<v8::Value> value) {
ON_BAILOUT("v8::FunctionTemplate::HasInstanceOf()", return false);
i::Object* obj = *Utils::OpenHandle(*value);
return obj->IsInstanceOf(*Utils::OpenHandle(this));
}
static Local<External> ExternalNewImpl(void* data) {
return Utils::ToLocal(i::Factory::NewProxy(static_cast<i::Address>(data)));
}
static void* ExternalValueImpl(i::Handle<i::Object> obj) {
return reinterpret_cast<void*>(i::Proxy::cast(*obj)->proxy());
}
static const intptr_t kAlignedPointerMask = 3;
static const int kAlignedPointerShift = 2;
Local<Value> v8::External::Wrap(void* data) {
STATIC_ASSERT(sizeof(data) == sizeof(i::Address));
LOG_API("External::Wrap");
EnsureInitialized("v8::External::Wrap()");
ENTER_V8;
if ((reinterpret_cast<intptr_t>(data) & kAlignedPointerMask) == 0) {
uintptr_t data_ptr = reinterpret_cast<uintptr_t>(data);
intptr_t data_value =
static_cast<intptr_t>(data_ptr >> kAlignedPointerShift);
STATIC_ASSERT(sizeof(data_ptr) == sizeof(data_value));
if (i::Smi::IsIntptrValid(data_value)) {
i::Handle<i::Object> obj(i::Smi::FromIntptr(data_value));
return Utils::ToLocal(obj);
}
}
return ExternalNewImpl(data);
}
void* v8::External::Unwrap(v8::Handle<v8::Value> value) {
if (IsDeadCheck("v8::External::Unwrap()")) return 0;
i::Handle<i::Object> obj = Utils::OpenHandle(*value);
if (obj->IsSmi()) {
// The external value was an aligned pointer.
uintptr_t result = static_cast<uintptr_t>(
i::Smi::cast(*obj)->value()) << kAlignedPointerShift;
return reinterpret_cast<void*>(result);
}
return ExternalValueImpl(obj);
}
Local<External> v8::External::New(void* data) {
STATIC_ASSERT(sizeof(data) == sizeof(i::Address));
LOG_API("External::New");
EnsureInitialized("v8::External::New()");
ENTER_V8;
return ExternalNewImpl(data);
}
void* External::Value() const {
if (IsDeadCheck("v8::External::Value()")) return 0;
i::Handle<i::Object> obj = Utils::OpenHandle(this);
return ExternalValueImpl(obj);
}
Local<String> v8::String::Empty() {
EnsureInitialized("v8::String::Empty()");
LOG_API("String::Empty()");
return Utils::ToLocal(i::Factory::empty_symbol());
}
Local<String> v8::String::New(const char* data, int length) {
EnsureInitialized("v8::String::New()");
LOG_API("String::New(char)");
if (length == 0) return Empty();
ENTER_V8;
if (length == -1) length = strlen(data);
i::Handle<i::String> result =
i::Factory::NewStringFromUtf8(i::Vector<const char>(data, length));
return Utils::ToLocal(result);
}
Local<String> v8::String::NewUndetectable(const char* data, int length) {
EnsureInitialized("v8::String::NewUndetectable()");
LOG_API("String::NewUndetectable(char)");
ENTER_V8;
if (length == -1) length = strlen(data);
i::Handle<i::String> result =
i::Factory::NewStringFromUtf8(i::Vector<const char>(data, length));
result->MarkAsUndetectable();
return Utils::ToLocal(result);
}
static int TwoByteStringLength(const uint16_t* data) {
int length = 0;
while (data[length] != '\0') length++;
return length;
}
Local<String> v8::String::New(const uint16_t* data, int length) {
EnsureInitialized("v8::String::New()");
LOG_API("String::New(uint16_)");
if (length == 0) return Empty();
ENTER_V8;
if (length == -1) length = TwoByteStringLength(data);
i::Handle<i::String> result =
i::Factory::NewStringFromTwoByte(i::Vector<const uint16_t>(data, length));
return Utils::ToLocal(result);
}
Local<String> v8::String::NewUndetectable(const uint16_t* data, int length) {
EnsureInitialized("v8::String::NewUndetectable()");
LOG_API("String::NewUndetectable(uint16_)");
ENTER_V8;
if (length == -1) length = TwoByteStringLength(data);
i::Handle<i::String> result =
i::Factory::NewStringFromTwoByte(i::Vector<const uint16_t>(data, length));
result->MarkAsUndetectable();
return Utils::ToLocal(result);
}
i::Handle<i::String> NewExternalStringHandle(
v8::String::ExternalStringResource* resource) {
i::Handle<i::String> result =
i::Factory::NewExternalStringFromTwoByte(resource);
return result;
}
i::Handle<i::String> NewExternalAsciiStringHandle(
v8::String::ExternalAsciiStringResource* resource) {
i::Handle<i::String> result =
i::Factory::NewExternalStringFromAscii(resource);
return result;
}
static void DisposeExternalString(v8::Persistent<v8::Value> obj,
void* parameter) {
ENTER_V8;
i::ExternalTwoByteString* str =
i::ExternalTwoByteString::cast(*Utils::OpenHandle(*obj));
// External symbols are deleted when they are pruned out of the symbol
// table. Generally external symbols are not registered with the weak handle
// callbacks unless they are upgraded to a symbol after being externalized.
if (!str->IsSymbol()) {
v8::String::ExternalStringResource* resource =
reinterpret_cast<v8::String::ExternalStringResource*>(parameter);
if (resource != NULL) {
const size_t total_size = resource->length() * sizeof(*resource->data());
i::Counters::total_external_string_memory.Decrement(total_size);
// The object will continue to live in the JavaScript heap until the
// handle is entirely cleaned out by the next GC. For example the
// destructor for the resource below could bring it back to life again.
// Which is why we make sure to not have a dangling pointer here.
str->set_resource(NULL);
delete resource;
}
}
// In any case we do not need this handle any longer.
obj.Dispose();
}
static void DisposeExternalAsciiString(v8::Persistent<v8::Value> obj,
void* parameter) {
ENTER_V8;
i::ExternalAsciiString* str =
i::ExternalAsciiString::cast(*Utils::OpenHandle(*obj));
// External symbols are deleted when they are pruned out of the symbol
// table. Generally external symbols are not registered with the weak handle
// callbacks unless they are upgraded to a symbol after being externalized.
if (!str->IsSymbol()) {
v8::String::ExternalAsciiStringResource* resource =
reinterpret_cast<v8::String::ExternalAsciiStringResource*>(parameter);
if (resource != NULL) {
const size_t total_size = resource->length() * sizeof(*resource->data());
i::Counters::total_external_string_memory.Decrement(total_size);
// The object will continue to live in the JavaScript heap until the
// handle is entirely cleaned out by the next GC. For example the
// destructor for the resource below could bring it back to life again.
// Which is why we make sure to not have a dangling pointer here.
str->set_resource(NULL);
delete resource;
}
}
// In any case we do not need this handle any longer.
obj.Dispose();
}
Local<String> v8::String::NewExternal(
v8::String::ExternalStringResource* resource) {
EnsureInitialized("v8::String::NewExternal()");
LOG_API("String::NewExternal");
ENTER_V8;
const size_t total_size = resource->length() * sizeof(*resource->data());
i::Counters::total_external_string_memory.Increment(total_size);
i::Handle<i::String> result = NewExternalStringHandle(resource);
i::Handle<i::Object> handle = i::GlobalHandles::Create(*result);
i::GlobalHandles::MakeWeak(handle.location(),
resource,
&DisposeExternalString);
return Utils::ToLocal(result);
}
bool v8::String::MakeExternal(v8::String::ExternalStringResource* resource) {
if (IsDeadCheck("v8::String::MakeExternal()")) return false;
if (this->IsExternal()) return false; // Already an external string.
ENTER_V8;
i::Handle <i::String> obj = Utils::OpenHandle(this);
bool result = obj->MakeExternal(resource);
if (result && !obj->IsSymbol()) {
// Operation was successful and the string is not a symbol. In this case
// we need to make sure that the we call the destructor for the external
// resource when no strong references to the string remain.
i::Handle<i::Object> handle = i::GlobalHandles::Create(*obj);
i::GlobalHandles::MakeWeak(handle.location(),
resource,
&DisposeExternalString);
}
return result;
}
Local<String> v8::String::NewExternal(
v8::String::ExternalAsciiStringResource* resource) {
EnsureInitialized("v8::String::NewExternal()");
LOG_API("String::NewExternal");
ENTER_V8;
const size_t total_size = resource->length() * sizeof(*resource->data());
i::Counters::total_external_string_memory.Increment(total_size);
i::Handle<i::String> result = NewExternalAsciiStringHandle(resource);
i::Handle<i::Object> handle = i::GlobalHandles::Create(*result);
i::GlobalHandles::MakeWeak(handle.location(),
resource,
&DisposeExternalAsciiString);
return Utils::ToLocal(result);
}
bool v8::String::MakeExternal(
v8::String::ExternalAsciiStringResource* resource) {
if (IsDeadCheck("v8::String::MakeExternal()")) return false;
if (this->IsExternal()) return false; // Already an external string.
ENTER_V8;
i::Handle <i::String> obj = Utils::OpenHandle(this);
bool result = obj->MakeExternal(resource);
if (result && !obj->IsSymbol()) {
// Operation was successful and the string is not a symbol. In this case
// we need to make sure that the we call the destructor for the external
// resource when no strong references to the string remain.
i::Handle<i::Object> handle = i::GlobalHandles::Create(*obj);
i::GlobalHandles::MakeWeak(handle.location(),
resource,
&DisposeExternalAsciiString);
}
return result;
}
Local<v8::Object> v8::Object::New() {
EnsureInitialized("v8::Object::New()");
LOG_API("Object::New");
ENTER_V8;
i::Handle<i::JSObject> obj =
i::Factory::NewJSObject(i::Top::object_function());
return Utils::ToLocal(obj);
}
Local<v8::Value> v8::Date::New(double time) {
EnsureInitialized("v8::Date::New()");
LOG_API("Date::New");
ENTER_V8;
EXCEPTION_PREAMBLE();
i::Handle<i::Object> obj =
i::Execution::NewDate(time, &has_pending_exception);
EXCEPTION_BAILOUT_CHECK(Local<v8::Value>());
return Utils::ToLocal(obj);
}
double v8::Date::NumberValue() const {
if (IsDeadCheck("v8::Date::NumberValue()")) return 0;
LOG_API("Date::NumberValue");
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::JSValue> jsvalue = i::Handle<i::JSValue>::cast(obj);
return jsvalue->value()->Number();
}
Local<v8::Array> v8::Array::New(int length) {
EnsureInitialized("v8::Array::New()");
LOG_API("Array::New");
ENTER_V8;
i::Handle<i::JSArray> obj = i::Factory::NewJSArray(length);
return Utils::ToLocal(obj);
}
uint32_t v8::Array::Length() const {
if (IsDeadCheck("v8::Array::Length()")) return 0;
i::Handle<i::JSArray> obj = Utils::OpenHandle(this);
i::Object* length = obj->length();
if (length->IsSmi()) {
return i::Smi::cast(length)->value();
} else {
return static_cast<uint32_t>(length->Number());
}
}
Local<Object> Array::CloneElementAt(uint32_t index) {
ON_BAILOUT("v8::Array::CloneElementAt()", return Local<Object>());
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
if (!self->HasFastElements()) {
return Local<Object>();
}
i::FixedArray* elms = i::FixedArray::cast(self->elements());
i::Object* paragon = elms->get(index);
if (!paragon->IsJSObject()) {
return Local<Object>();
}
i::Handle<i::JSObject> paragon_handle(i::JSObject::cast(paragon));
EXCEPTION_PREAMBLE();
i::Handle<i::JSObject> result = i::Copy(paragon_handle);
has_pending_exception = result.is_null();
EXCEPTION_BAILOUT_CHECK(Local<Object>());
return Utils::ToLocal(result);
}
Local<String> v8::String::NewSymbol(const char* data, int length) {
EnsureInitialized("v8::String::NewSymbol()");
LOG_API("String::NewSymbol(char)");
ENTER_V8;
if (length == -1) length = strlen(data);
i::Handle<i::String> result =
i::Factory::LookupSymbol(i::Vector<const char>(data, length));
return Utils::ToLocal(result);
}
Local<Number> v8::Number::New(double value) {
EnsureInitialized("v8::Number::New()");
ENTER_V8;
i::Handle<i::Object> result = i::Factory::NewNumber(value);
return Utils::NumberToLocal(result);
}
Local<Integer> v8::Integer::New(int32_t value) {
EnsureInitialized("v8::Integer::New()");
if (i::Smi::IsValid(value)) {
return Utils::IntegerToLocal(i::Handle<i::Object>(i::Smi::FromInt(value)));
}
ENTER_V8;
i::Handle<i::Object> result = i::Factory::NewNumber(value);
return Utils::IntegerToLocal(result);
}
void V8::IgnoreOutOfMemoryException() {
thread_local.SetIgnoreOutOfMemory(true);
}
bool V8::AddMessageListener(MessageCallback that, Handle<Value> data) {
EnsureInitialized("v8::V8::AddMessageListener()");
ON_BAILOUT("v8::V8::AddMessageListener()", return false);
ENTER_V8;
HandleScope scope;
NeanderArray listeners(i::Factory::message_listeners());
NeanderObject obj(2);
obj.set(0, *i::Factory::NewProxy(FUNCTION_ADDR(that)));
obj.set(1, data.IsEmpty() ?
i::Heap::undefined_value() :
*Utils::OpenHandle(*data));
listeners.add(obj.value());
return true;
}
void V8::RemoveMessageListeners(MessageCallback that) {
EnsureInitialized("v8::V8::RemoveMessageListener()");
ON_BAILOUT("v8::V8::RemoveMessageListeners()", return);
ENTER_V8;
HandleScope scope;
NeanderArray listeners(i::Factory::message_listeners());
for (int i = 0; i < listeners.length(); i++) {
if (listeners.get(i)->IsUndefined()) continue; // skip deleted ones
NeanderObject listener(i::JSObject::cast(listeners.get(i)));
i::Handle<i::Proxy> callback_obj(i::Proxy::cast(listener.get(0)));
if (callback_obj->proxy() == FUNCTION_ADDR(that)) {
listeners.set(i, i::Heap::undefined_value());
}
}
}
void V8::SetCounterFunction(CounterLookupCallback callback) {
if (IsDeadCheck("v8::V8::SetCounterFunction()")) return;
i::StatsTable::SetCounterFunction(callback);
}
void V8::SetCreateHistogramFunction(CreateHistogramCallback callback) {
if (IsDeadCheck("v8::V8::SetCreateHistogramFunction()")) return;
i::StatsTable::SetCreateHistogramFunction(callback);
}
void V8::SetAddHistogramSampleFunction(AddHistogramSampleCallback callback) {
if (IsDeadCheck("v8::V8::SetAddHistogramSampleFunction()")) return;
i::StatsTable::SetAddHistogramSampleFunction(callback);
}
void V8::EnableSlidingStateWindow() {
if (IsDeadCheck("v8::V8::EnableSlidingStateWindow()")) return;
i::Logger::EnableSlidingStateWindow();
}
void V8::SetFailedAccessCheckCallbackFunction(
FailedAccessCheckCallback callback) {
if (IsDeadCheck("v8::V8::SetFailedAccessCheckCallbackFunction()")) return;
i::Top::SetFailedAccessCheckCallback(callback);
}
void V8::AddObjectGroup(Persistent<Value>* objects, size_t length) {
if (IsDeadCheck("v8::V8::AddObjectGroup()")) return;
STATIC_ASSERT(sizeof(Persistent<Value>) == sizeof(i::Object**));
i::GlobalHandles::AddGroup(reinterpret_cast<i::Object***>(objects), length);
}
int V8::AdjustAmountOfExternalAllocatedMemory(int change_in_bytes) {
if (IsDeadCheck("v8::V8::AdjustAmountOfExternalAllocatedMemory()")) return 0;
return i::Heap::AdjustAmountOfExternalAllocatedMemory(change_in_bytes);
}
void V8::SetGlobalGCPrologueCallback(GCCallback callback) {
if (IsDeadCheck("v8::V8::SetGlobalGCPrologueCallback()")) return;
i::Heap::SetGlobalGCPrologueCallback(callback);
}
void V8::SetGlobalGCEpilogueCallback(GCCallback callback) {
if (IsDeadCheck("v8::V8::SetGlobalGCEpilogueCallback()")) return;
i::Heap::SetGlobalGCEpilogueCallback(callback);
}
void V8::PauseProfiler() {
#ifdef ENABLE_LOGGING_AND_PROFILING
i::Logger::PauseProfiler(PROFILER_MODULE_CPU);
#endif
}
void V8::ResumeProfiler() {
#ifdef ENABLE_LOGGING_AND_PROFILING
i::Logger::ResumeProfiler(PROFILER_MODULE_CPU);
#endif
}
bool V8::IsProfilerPaused() {
#ifdef ENABLE_LOGGING_AND_PROFILING
return i::Logger::GetActiveProfilerModules() & PROFILER_MODULE_CPU;
#else
return true;
#endif
}
void V8::ResumeProfilerEx(int flags) {
#ifdef ENABLE_LOGGING_AND_PROFILING
if (flags & PROFILER_MODULE_HEAP_SNAPSHOT) {
// Snapshot mode: resume modules, perform GC, then pause only
// those modules which haven't been started prior to making a
// snapshot.
// Reset snapshot flag and CPU module flags.
flags &= ~(PROFILER_MODULE_HEAP_SNAPSHOT | PROFILER_MODULE_CPU);
const int current_flags = i::Logger::GetActiveProfilerModules();
i::Logger::ResumeProfiler(flags);
i::Heap::CollectAllGarbage();
i::Logger::PauseProfiler(~current_flags & flags);
} else {
i::Logger::ResumeProfiler(flags);
}
#endif
}
void V8::PauseProfilerEx(int flags) {
#ifdef ENABLE_LOGGING_AND_PROFILING
i::Logger::PauseProfiler(flags);
#endif
}
int V8::GetActiveProfilerModules() {
#ifdef ENABLE_LOGGING_AND_PROFILING
return i::Logger::GetActiveProfilerModules();
#else
return PROFILER_MODULE_NONE;
#endif
}
int V8::GetLogLines(int from_pos, char* dest_buf, int max_size) {
#ifdef ENABLE_LOGGING_AND_PROFILING
return i::Logger::GetLogLines(from_pos, dest_buf, max_size);
#endif
return 0;
}
String::Utf8Value::Utf8Value(v8::Handle<v8::Value> obj) {
EnsureInitialized("v8::String::Utf8Value::Utf8Value()");
if (obj.IsEmpty()) {
str_ = NULL;
length_ = 0;
return;
}
ENTER_V8;
HandleScope scope;
TryCatch try_catch;
Handle<String> str = obj->ToString();
if (str.IsEmpty()) {
str_ = NULL;
length_ = 0;
} else {
length_ = str->Utf8Length();
str_ = i::NewArray<char>(length_ + 1);
str->WriteUtf8(str_);
}
}
String::Utf8Value::~Utf8Value() {
i::DeleteArray(str_);
}
String::AsciiValue::AsciiValue(v8::Handle<v8::Value> obj) {
EnsureInitialized("v8::String::AsciiValue::AsciiValue()");
if (obj.IsEmpty()) {
str_ = NULL;
length_ = 0;
return;
}
ENTER_V8;
HandleScope scope;
TryCatch try_catch;
Handle<String> str = obj->ToString();
if (str.IsEmpty()) {
str_ = NULL;
length_ = 0;
} else {
length_ = str->Length();
str_ = i::NewArray<char>(length_ + 1);
str->WriteAscii(str_);
}
}
String::AsciiValue::~AsciiValue() {
i::DeleteArray(str_);
}
String::Value::Value(v8::Handle<v8::Value> obj) {
EnsureInitialized("v8::String::Value::Value()");
if (obj.IsEmpty()) {
str_ = NULL;
length_ = 0;
return;
}
ENTER_V8;
HandleScope scope;
TryCatch try_catch;
Handle<String> str = obj->ToString();
if (str.IsEmpty()) {
str_ = NULL;
length_ = 0;
} else {
length_ = str->Length();
str_ = i::NewArray<uint16_t>(length_ + 1);
str->Write(str_);
}
}
String::Value::~Value() {
i::DeleteArray(str_);
}
Local<Value> Exception::RangeError(v8::Handle<v8::String> raw_message) {
LOG_API("RangeError");
ON_BAILOUT("v8::Exception::RangeError()", return Local<Value>());
ENTER_V8;
i::Object* error;
{
HandleScope scope;
i::Handle<i::String> message = Utils::OpenHandle(*raw_message);
i::Handle<i::Object> result = i::Factory::NewRangeError(message);
error = *result;
}
i::Handle<i::Object> result(error);
return Utils::ToLocal(result);
}
Local<Value> Exception::ReferenceError(v8::Handle<v8::String> raw_message) {
LOG_API("ReferenceError");
ON_BAILOUT("v8::Exception::ReferenceError()", return Local<Value>());
ENTER_V8;
i::Object* error;
{
HandleScope scope;
i::Handle<i::String> message = Utils::OpenHandle(*raw_message);
i::Handle<i::Object> result = i::Factory::NewReferenceError(message);
error = *result;
}
i::Handle<i::Object> result(error);
return Utils::ToLocal(result);
}
Local<Value> Exception::SyntaxError(v8::Handle<v8::String> raw_message) {
LOG_API("SyntaxError");
ON_BAILOUT("v8::Exception::SyntaxError()", return Local<Value>());
ENTER_V8;
i::Object* error;
{
HandleScope scope;
i::Handle<i::String> message = Utils::OpenHandle(*raw_message);
i::Handle<i::Object> result = i::Factory::NewSyntaxError(message);
error = *result;
}
i::Handle<i::Object> result(error);
return Utils::ToLocal(result);
}
Local<Value> Exception::TypeError(v8::Handle<v8::String> raw_message) {
LOG_API("TypeError");
ON_BAILOUT("v8::Exception::TypeError()", return Local<Value>());
ENTER_V8;
i::Object* error;
{
HandleScope scope;
i::Handle<i::String> message = Utils::OpenHandle(*raw_message);
i::Handle<i::Object> result = i::Factory::NewTypeError(message);
error = *result;
}
i::Handle<i::Object> result(error);
return Utils::ToLocal(result);
}
Local<Value> Exception::Error(v8::Handle<v8::String> raw_message) {
LOG_API("Error");
ON_BAILOUT("v8::Exception::Error()", return Local<Value>());
ENTER_V8;
i::Object* error;
{
HandleScope scope;
i::Handle<i::String> message = Utils::OpenHandle(*raw_message);
i::Handle<i::Object> result = i::Factory::NewError(message);
error = *result;
}
i::Handle<i::Object> result(error);
return Utils::ToLocal(result);
}
// --- D e b u g S u p p o r t ---
#ifdef ENABLE_DEBUGGER_SUPPORT
bool Debug::SetDebugEventListener(EventCallback that, Handle<Value> data) {
EnsureInitialized("v8::Debug::SetDebugEventListener()");
ON_BAILOUT("v8::Debug::SetDebugEventListener()", return false);
ENTER_V8;
HandleScope scope;
i::Handle<i::Object> proxy = i::Factory::undefined_value();
if (that != NULL) {
proxy = i::Factory::NewProxy(FUNCTION_ADDR(that));
}
i::Debugger::SetEventListener(proxy, Utils::OpenHandle(*data));
return true;
}
bool Debug::SetDebugEventListener(v8::Handle<v8::Object> that,
Handle<Value> data) {
ON_BAILOUT("v8::Debug::SetDebugEventListener()", return false);
ENTER_V8;
i::Debugger::SetEventListener(Utils::OpenHandle(*that),
Utils::OpenHandle(*data));
return true;
}
void Debug::DebugBreak() {
if (!i::V8::IsRunning()) return;
i::StackGuard::DebugBreak();
}
static v8::Debug::MessageHandler message_handler = NULL;
static void MessageHandlerWrapper(const v8::Debug::Message& message) {
if (message_handler) {
v8::String::Value json(message.GetJSON());
message_handler(*json, json.length(), message.GetClientData());
}
}
void Debug::SetMessageHandler(v8::Debug::MessageHandler handler,
bool message_handler_thread) {
EnsureInitialized("v8::Debug::SetMessageHandler");
ENTER_V8;
// Message handler thread not supported any more. Parameter temporally left in
// the API for client compatability reasons.
CHECK(!message_handler_thread);
// TODO(sgjesse) support the old message handler API through a simple wrapper.
message_handler = handler;
if (message_handler != NULL) {
i::Debugger::SetMessageHandler(MessageHandlerWrapper);
} else {
i::Debugger::SetMessageHandler(NULL);
}
}
void Debug::SetMessageHandler2(v8::Debug::MessageHandler2 handler) {
EnsureInitialized("v8::Debug::SetMessageHandler");
ENTER_V8;
HandleScope scope;
i::Debugger::SetMessageHandler(handler);
}
void Debug::SendCommand(const uint16_t* command, int length,
ClientData* client_data) {
if (!i::V8::IsRunning()) return;
i::Debugger::ProcessCommand(i::Vector<const uint16_t>(command, length),
client_data);
}
void Debug::SetHostDispatchHandler(HostDispatchHandler handler,
int period) {
EnsureInitialized("v8::Debug::SetHostDispatchHandler");
ENTER_V8;
i::Debugger::SetHostDispatchHandler(handler, period);
}
Handle<Value> Debug::Call(v8::Handle<v8::Function> fun,
v8::Handle<v8::Value> data) {
if (!i::V8::IsRunning()) return Handle<Value>();
ON_BAILOUT("v8::Debug::Call()", return Handle<Value>());
ENTER_V8;
i::Handle<i::Object> result;
EXCEPTION_PREAMBLE();
if (data.IsEmpty()) {
result = i::Debugger::Call(Utils::OpenHandle(*fun),
i::Factory::undefined_value(),
&has_pending_exception);
} else {
result = i::Debugger::Call(Utils::OpenHandle(*fun),
Utils::OpenHandle(*data),
&has_pending_exception);
}
EXCEPTION_BAILOUT_CHECK(Local<Value>());
return Utils::ToLocal(result);
}
bool Debug::EnableAgent(const char* name, int port) {
return i::Debugger::StartAgent(name, port);
}
#endif // ENABLE_DEBUGGER_SUPPORT
namespace internal {
HandleScopeImplementer* HandleScopeImplementer::instance() {
return &thread_local;
}
char* HandleScopeImplementer::ArchiveThread(char* storage) {
return thread_local.ArchiveThreadHelper(storage);
}
char* HandleScopeImplementer::ArchiveThreadHelper(char* storage) {
v8::ImplementationUtilities::HandleScopeData* current =
v8::ImplementationUtilities::CurrentHandleScope();
handle_scope_data_ = *current;
memcpy(storage, this, sizeof(*this));
Initialize();
current->Initialize();
return storage + ArchiveSpacePerThread();
}
int HandleScopeImplementer::ArchiveSpacePerThread() {
return sizeof(thread_local);
}
char* HandleScopeImplementer::RestoreThread(char* storage) {
return thread_local.RestoreThreadHelper(storage);
}
char* HandleScopeImplementer::RestoreThreadHelper(char* storage) {
memcpy(this, storage, sizeof(*this));
*v8::ImplementationUtilities::CurrentHandleScope() = handle_scope_data_;
return storage + ArchiveSpacePerThread();
}
void HandleScopeImplementer::Iterate(
ObjectVisitor* v,
List<void**>* blocks,
v8::ImplementationUtilities::HandleScopeData* handle_data) {
// Iterate over all handles in the blocks except for the last.
for (int i = blocks->length() - 2; i >= 0; --i) {
Object** block =
reinterpret_cast<Object**>(blocks->at(i));
v->VisitPointers(block, &block[kHandleBlockSize]);
}
// Iterate over live handles in the last block (if any).
if (!blocks->is_empty()) {
v->VisitPointers(reinterpret_cast<Object**>(blocks->last()),
reinterpret_cast<Object**>(handle_data->next));
}
}
void HandleScopeImplementer::Iterate(ObjectVisitor* v) {
v8::ImplementationUtilities::HandleScopeData* current =
v8::ImplementationUtilities::CurrentHandleScope();
Iterate(v, thread_local.Blocks(), current);
}
char* HandleScopeImplementer::Iterate(ObjectVisitor* v, char* storage) {
HandleScopeImplementer* thread_local =
reinterpret_cast<HandleScopeImplementer*>(storage);
List<void**>* blocks_of_archived_thread = thread_local->Blocks();
v8::ImplementationUtilities::HandleScopeData* handle_data_of_archived_thread =
&thread_local->handle_scope_data_;
Iterate(v, blocks_of_archived_thread, handle_data_of_archived_thread);
return storage + ArchiveSpacePerThread();
}
} } // namespace v8::internal