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v8/src/api.cc
antonm@chromium.org 897f7dedc1 Allow to define accessors on objects. 
Currently one can only define accessors on object templates.  This patch
allows to create accessors on the fly.

These accessors could control access to elements as well.  This element
support is somewhat rudimentary and may require future work (for example,
we probably don't want to convert index into a string.)

Review URL: http://codereview.chromium.org/2123012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4714 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2010-05-25 12:14:49 +00:00

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// 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 "arguments.h"
#include "bootstrapper.h"
#include "compiler.h"
#include "debug.h"
#include "execution.h"
#include "global-handles.h"
#include "messages.h"
#include "platform.h"
#include "profile-generator-inl.h"
#include "serialize.h"
#include "snapshot.h"
#include "top.h"
#include "utils.h"
#include "v8threads.h"
#include "version.h"
#include "../include/v8-profiler.h"
#define LOG_API(expr) LOG(ApiEntryCall(expr))
#ifdef ENABLE_VMSTATE_TRACKING
#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) || v8::V8::IsExecutionTerminating()) { \
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.ignore_out_of_memory()) \
i::V8::FatalProcessOutOfMemory(NULL); \
} \
bool call_depth_is_zero = thread_local.CallDepthIsZero(); \
i::Top::OptionalRescheduleException(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;
int i::Internals::kJSObjectType = JS_OBJECT_TYPE;
int i::Internals::kFirstNonstringType = FIRST_NONSTRING_TYPE;
int i::Internals::kProxyType = PROXY_TYPE;
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::HeapStats heap_stats;
int start_marker;
heap_stats.start_marker = &start_marker;
int new_space_size;
heap_stats.new_space_size = &new_space_size;
int new_space_capacity;
heap_stats.new_space_capacity = &new_space_capacity;
int old_pointer_space_size;
heap_stats.old_pointer_space_size = &old_pointer_space_size;
int old_pointer_space_capacity;
heap_stats.old_pointer_space_capacity = &old_pointer_space_capacity;
int old_data_space_size;
heap_stats.old_data_space_size = &old_data_space_size;
int old_data_space_capacity;
heap_stats.old_data_space_capacity = &old_data_space_capacity;
int code_space_size;
heap_stats.code_space_size = &code_space_size;
int code_space_capacity;
heap_stats.code_space_capacity = &code_space_capacity;
int map_space_size;
heap_stats.map_space_size = &map_space_size;
int map_space_capacity;
heap_stats.map_space_capacity = &map_space_capacity;
int cell_space_size;
heap_stats.cell_space_size = &cell_space_size;
int cell_space_capacity;
heap_stats.cell_space_capacity = &cell_space_capacity;
int lo_space_size;
heap_stats.lo_space_size = &lo_space_size;
int global_handle_count;
heap_stats.global_handle_count = &global_handle_count;
int weak_global_handle_count;
heap_stats.weak_global_handle_count = &weak_global_handle_count;
int pending_global_handle_count;
heap_stats.pending_global_handle_count = &pending_global_handle_count;
int near_death_global_handle_count;
heap_stats.near_death_global_handle_count = &near_death_global_handle_count;
int destroyed_global_handle_count;
heap_stats.destroyed_global_handle_count = &destroyed_global_handle_count;
int end_marker;
heap_stats.end_marker = &end_marker;
i::Heap::RecordStats(&heap_stats);
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(i::Object** begin,
i::Object** 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) {
int young_space_size = constraints->max_young_space_size();
int old_gen_size = constraints->max_old_space_size();
if (young_space_size != 0 || old_gen_size != 0) {
bool result = i::Heap::ConfigureHeap(young_space_size / 2, old_gen_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;
}
i::Object** V8::GlobalizeReference(i::Object** obj) {
if (IsDeadCheck("V8::Persistent::New")) return NULL;
LOG_API("Persistent::New");
i::Handle<i::Object> result =
i::GlobalHandles::Create(*obj);
return result.location();
}
void V8::MakeWeak(i::Object** object, void* parameters,
WeakReferenceCallback callback) {
LOG_API("MakeWeak");
i::GlobalHandles::MakeWeak(object, parameters, callback);
}
void V8::ClearWeak(i::Object** obj) {
LOG_API("ClearWeak");
i::GlobalHandles::ClearWeakness(obj);
}
bool V8::IsGlobalNearDeath(i::Object** obj) {
LOG_API("IsGlobalNearDeath");
if (!i::V8::IsRunning()) return false;
return i::GlobalHandles::IsNearDeath(obj);
}
bool V8::IsGlobalWeak(i::Object** obj) {
LOG_API("IsGlobalWeak");
if (!i::V8::IsRunning()) return false;
return i::GlobalHandles::IsWeak(obj);
}
void V8::DisposeGlobal(i::Object** obj) {
LOG_API("DisposeGlobal");
if (!i::V8::IsRunning()) return;
i::GlobalHandles::Destroy(obj);
}
// --- 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();
}
i::Object** v8::HandleScope::CreateHandle(i::Object* value) {
return i::HandleScope::CreateHandle(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::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::Context* last_context = thread_local.RestoreContext();
i::Top::set_context(last_context);
}
void Context::SetData(v8::Handle<String> 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);
}
i::Object** v8::HandleScope::RawClose(i::Object** 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 = NULL;
if (value != NULL) {
result = *value;
}
is_closed_ = true;
i::HandleScope::Leave(&previous_);
if (value == NULL) {
return NULL;
}
// Allocate a new handle on the previous handle block.
i::Handle<i::Object> handle(result);
return 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);
}
static i::Handle<i::AccessorInfo> MakeAccessorInfo(
v8::Handle<String> name,
AccessorGetter getter,
AccessorSetter setter,
v8::Handle<Value> data,
v8::AccessControl settings,
v8::PropertyAttribute attributes) {
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));
return 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 = MakeAccessorInfo(name,
getter, setter, data,
settings, 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(i::Handle<i::String>(), &buf, NULL);
}
ScriptData* ScriptData::New(const char* data, int length) {
// Return an empty ScriptData if the length is obviously invalid.
if (length % sizeof(unsigned) != 0) {
return new i::ScriptDataImpl(i::Vector<unsigned>());
}
// Copy the data to ensure it is properly aligned.
int deserialized_data_length = length / sizeof(unsigned);
unsigned* deserialized_data = i::NewArray<unsigned>(deserialized_data_length);
memcpy(deserialized_data, data, length);
return new i::ScriptDataImpl(
i::Vector<unsigned>(deserialized_data, deserialized_data_length));
}
// --- S c r i p t ---
Local<Script> Script::New(v8::Handle<String> source,
v8::ScriptOrigin* origin,
v8::ScriptData* pre_data,
v8::Handle<String> script_data) {
ON_BAILOUT("v8::Script::New()", return Local<Script>());
LOG_API("Script::New");
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_impl = static_cast<i::ScriptDataImpl*>(pre_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_impl == NULL || pre_data_impl->SanityCheck());
// If the pre-data isn't sane we simply ignore it
if (pre_data_impl != NULL && !pre_data_impl->SanityCheck()) {
pre_data_impl = NULL;
}
i::Handle<i::SharedFunctionInfo> result =
i::Compiler::Compile(str,
name_obj,
line_offset,
column_offset,
NULL,
pre_data_impl,
Utils::OpenHandle(*script_data),
i::NOT_NATIVES_CODE);
has_pending_exception = result.is_null();
EXCEPTION_BAILOUT_CHECK(Local<Script>());
return Local<Script>(ToApi<Script>(result));
}
Local<Script> Script::New(v8::Handle<String> source,
v8::Handle<Value> file_name) {
ScriptOrigin origin(file_name);
return New(source, &origin);
}
Local<Script> Script::Compile(v8::Handle<String> source,
v8::ScriptOrigin* origin,
v8::ScriptData* pre_data,
v8::Handle<String> script_data) {
ON_BAILOUT("v8::Script::Compile()", return Local<Script>());
LOG_API("Script::Compile");
ENTER_V8;
Local<Script> generic = New(source, origin, pre_data, script_data);
if (generic.IsEmpty())
return generic;
i::Handle<i::Object> obj = Utils::OpenHandle(*generic);
i::Handle<i::SharedFunctionInfo> function =
i::Handle<i::SharedFunctionInfo>(i::SharedFunctionInfo::cast(*obj));
i::Handle<i::JSFunction> result =
i::Factory::NewFunctionFromSharedFunctionInfo(function,
i::Top::global_context());
return Local<Script>(ToApi<Script>(result));
}
Local<Script> Script::Compile(v8::Handle<String> source,
v8::Handle<Value> file_name,
v8::Handle<String> script_data) {
ScriptOrigin origin(file_name);
return Compile(source, &origin, 0, script_data);
}
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::Object> obj = Utils::OpenHandle(this);
i::Handle<i::JSFunction> fun;
if (obj->IsSharedFunctionInfo()) {
i::Handle<i::SharedFunctionInfo>
function_info(i::SharedFunctionInfo::cast(*obj));
fun = i::Factory::NewFunctionFromSharedFunctionInfo(
function_info, i::Top::global_context());
} else {
fun = i::Handle<i::JSFunction>(i::JSFunction::cast(*obj));
}
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);
}
static i::Handle<i::SharedFunctionInfo> OpenScript(Script* script) {
i::Handle<i::Object> obj = Utils::OpenHandle(script);
i::Handle<i::SharedFunctionInfo> result;
if (obj->IsSharedFunctionInfo()) {
result =
i::Handle<i::SharedFunctionInfo>(i::SharedFunctionInfo::cast(*obj));
} else {
result =
i::Handle<i::SharedFunctionInfo>(i::JSFunction::cast(*obj)->shared());
}
return 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::SharedFunctionInfo> function_info = OpenScript(this);
i::Handle<i::Script> script(i::Script::cast(function_info->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<String> data) {
ON_BAILOUT("v8::Script::SetData()", return);
LOG_API("Script::SetData");
{
HandleScope scope;
i::Handle<i::SharedFunctionInfo> function_info = OpenScript(this);
i::Handle<i::Object> raw_data = Utils::OpenHandle(*data);
i::Handle<i::Script> script(i::Script::cast(function_info->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_address()),
exception_(i::Heap::the_hole_value()),
message_(i::Smi::FromInt(0)),
is_verbose_(false),
can_continue_(true),
capture_message_(true),
rethrow_(false) {
i::Top::RegisterTryCatchHandler(this);
}
v8::TryCatch::~TryCatch() {
if (rethrow_) {
v8::HandleScope scope;
v8::Local<v8::Value> exc = v8::Local<v8::Value>::New(Exception());
i::Top::UnregisterTryCatchHandler(this);
v8::ThrowException(exc);
} else {
i::Top::UnregisterTryCatchHandler(this);
}
}
bool v8::TryCatch::HasCaught() const {
return !reinterpret_cast<i::Object*>(exception_)->IsTheHole();
}
bool v8::TryCatch::CanContinue() const {
return can_continue_;
}
v8::Handle<v8::Value> v8::TryCatch::ReThrow() {
if (!HasCaught()) return v8::Local<v8::Value>();
rethrow_ = true;
return v8::Undefined();
}
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<Value> v8::TryCatch::StackTrace() const {
if (HasCaught()) {
i::Object* raw_obj = reinterpret_cast<i::Object*>(exception_);
if (!raw_obj->IsJSObject()) return v8::Local<Value>();
v8::HandleScope scope;
i::Handle<i::JSObject> obj(i::JSObject::cast(raw_obj));
i::Handle<i::String> name = i::Factory::LookupAsciiSymbol("stack");
if (!obj->HasProperty(*name))
return v8::Local<Value>();
return scope.Close(v8::Utils::ToLocal(i::GetProperty(obj, name)));
} 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 kNoLineNumberInfo);
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 kNoColumnInfo;
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 kNoColumnInfo;
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);
}
// --- S t a c k T r a c e ---
Local<StackFrame> StackTrace::GetFrame(uint32_t index) const {
if (IsDeadCheck("v8::StackTrace::GetFrame()")) return Local<StackFrame>();
ENTER_V8;
HandleScope scope;
i::Handle<i::JSArray> self = Utils::OpenHandle(this);
i::Handle<i::JSObject> obj(i::JSObject::cast(self->GetElement(index)));
return scope.Close(Utils::StackFrameToLocal(obj));
}
int StackTrace::GetFrameCount() const {
if (IsDeadCheck("v8::StackTrace::GetFrameCount()")) return -1;
ENTER_V8;
return i::Smi::cast(Utils::OpenHandle(this)->length())->value();
}
Local<Array> StackTrace::AsArray() {
if (IsDeadCheck("v8::StackTrace::AsArray()")) Local<Array>();
ENTER_V8;
return Utils::ToLocal(Utils::OpenHandle(this));
}
Local<StackTrace> StackTrace::CurrentStackTrace(int frame_limit,
StackTraceOptions options) {
if (IsDeadCheck("v8::StackTrace::CurrentStackTrace()")) Local<StackTrace>();
ENTER_V8;
return i::Top::CaptureCurrentStackTrace(frame_limit, options);
}
// --- S t a c k F r a m e ---
int StackFrame::GetLineNumber() const {
if (IsDeadCheck("v8::StackFrame::GetLineNumber()")) {
return Message::kNoLineNumberInfo;
}
ENTER_V8;
i::HandleScope scope;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> line = GetProperty(self, "lineNumber");
if (!line->IsSmi()) {
return Message::kNoLineNumberInfo;
}
return i::Smi::cast(*line)->value();
}
int StackFrame::GetColumn() const {
if (IsDeadCheck("v8::StackFrame::GetColumn()")) {
return Message::kNoColumnInfo;
}
ENTER_V8;
i::HandleScope scope;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> column = GetProperty(self, "column");
if (!column->IsSmi()) {
return Message::kNoColumnInfo;
}
return i::Smi::cast(*column)->value();
}
Local<String> StackFrame::GetScriptName() const {
if (IsDeadCheck("v8::StackFrame::GetScriptName()")) return Local<String>();
ENTER_V8;
HandleScope scope;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> name = GetProperty(self, "scriptName");
if (!name->IsString()) {
return Local<String>();
}
return scope.Close(Local<String>::Cast(Utils::ToLocal(name)));
}
Local<String> StackFrame::GetFunctionName() const {
if (IsDeadCheck("v8::StackFrame::GetFunctionName()")) return Local<String>();
ENTER_V8;
HandleScope scope;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> name = GetProperty(self, "functionName");
if (!name->IsString()) {
return Local<String>();
}
return scope.Close(Local<String>::Cast(Utils::ToLocal(name)));
}
bool StackFrame::IsEval() const {
if (IsDeadCheck("v8::StackFrame::IsEval()")) return false;
ENTER_V8;
i::HandleScope scope;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> is_eval = GetProperty(self, "isEval");
return is_eval->IsTrue();
}
bool StackFrame::IsConstructor() const {
if (IsDeadCheck("v8::StackFrame::IsConstructor()")) return false;
ENTER_V8;
i::HandleScope scope;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> is_constructor = GetProperty(self, "isConstructor");
return is_constructor->IsTrue();
}
// --- 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::FullIsString() const {
if (IsDeadCheck("v8::Value::IsString()")) return false;
bool result = Utils::OpenHandle(this)->IsString();
ASSERT_EQ(result, QuickIsString());
return result;
}
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::IsUint32() const {
if (IsDeadCheck("v8::Value::IsUint32()")) return false;
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsSmi()) return i::Smi::cast(*obj)->value() >= 0;
if (obj->IsNumber()) {
double value = obj->Number();
return i::FastUI2D(i::FastD2UI(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));
}
void External::CheckCast(v8::Value* that) {
if (IsDeadCheck("v8::External::Cast()")) return;
i::Handle<i::Object> obj = Utils::OpenHandle(that);
ApiCheck(obj->IsProxy(),
"v8::External::Cast()",
"Could not convert to external");
}
void v8::Object::CheckCast(Value* that) {
if (IsDeadCheck("v8::Object::Cast()")) return;
i::Handle<i::Object> obj = Utils::OpenHandle(that);
ApiCheck(obj->IsJSObject(),
"v8::Object::Cast()",
"Could not convert to object");
}
void v8::Function::CheckCast(Value* that) {
if (IsDeadCheck("v8::Function::Cast()")) return;
i::Handle<i::Object> obj = Utils::OpenHandle(that);
ApiCheck(obj->IsJSFunction(),
"v8::Function::Cast()",
"Could not convert to function");
}
void v8::String::CheckCast(v8::Value* that) {
if (IsDeadCheck("v8::String::Cast()")) return;
i::Handle<i::Object> obj = Utils::OpenHandle(that);
ApiCheck(obj->IsString(),
"v8::String::Cast()",
"Could not convert to string");
}
void v8::Number::CheckCast(v8::Value* that) {
if (IsDeadCheck("v8::Number::Cast()")) return;
i::Handle<i::Object> obj = Utils::OpenHandle(that);
ApiCheck(obj->IsNumber(),
"v8::Number::Cast()",
"Could not convert to number");
}
void v8::Integer::CheckCast(v8::Value* that) {
if (IsDeadCheck("v8::Integer::Cast()")) return;
i::Handle<i::Object> obj = Utils::OpenHandle(that);
ApiCheck(obj->IsNumber(),
"v8::Integer::Cast()",
"Could not convert to number");
}
void v8::Array::CheckCast(Value* that) {
if (IsDeadCheck("v8::Array::Cast()")) return;
i::Handle<i::Object> obj = Utils::OpenHandle(that);
ApiCheck(obj->IsJSArray(),
"v8::Array::Cast()",
"Could not convert to array");
}
void v8::Date::CheckCast(v8::Value* that) {
if (IsDeadCheck("v8::Date::Cast()")) return;
i::Handle<i::Object> obj = Utils::OpenHandle(that);
ApiCheck(obj->HasSpecificClassOf(i::Heap::Date_symbol()),
"v8::Date::Cast()",
"Could not convert to date");
}
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;
HandleScope scope;
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::Set(uint32_t index, v8::Handle<Value> value) {
ON_BAILOUT("v8::Object::Set()", return false);
ENTER_V8;
HandleScope scope;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
EXCEPTION_PREAMBLE();
i::Handle<i::Object> obj = i::SetElement(
self,
index,
value_obj);
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;
HandleScope scope;
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;
HandleScope scope;
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::Get(uint32_t index) {
ON_BAILOUT("v8::Object::Get()", return Local<v8::Value>());
ENTER_V8;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
EXCEPTION_PREAMBLE();
i::Handle<i::Object> result = i::GetElement(self, index);
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);
}
bool v8::Object::SetPrototype(Handle<Value> value) {
ON_BAILOUT("v8::Object::SetPrototype()", return false);
ENTER_V8;
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
EXCEPTION_PREAMBLE();
i::Handle<i::Object> result = i::SetPrototype(self, value_obj);
has_pending_exception = result.is_null();
EXCEPTION_BAILOUT_CHECK(false);
return true;
}
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, i::INCLUDE_PROTOS);
// 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 = "]";
int prefix_len = i::StrLength(prefix);
int str_len = str->Length();
int postfix_len = i::StrLength(postfix);
int buf_len = prefix_len + str_len + postfix_len;
i::ScopedVector<char> buf(buf_len);
// Write prefix.
char* ptr = buf.start();
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.start(), buf_len);
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 Object::SetAccessor(Handle<String> name,
AccessorGetter getter,
AccessorSetter setter,
v8::Handle<Value> data,
AccessControl settings,
PropertyAttribute attributes) {
ON_BAILOUT("v8::Object::SetAccessor()", return false);
ENTER_V8;
HandleScope scope;
i::Handle<i::AccessorInfo> info = MakeAccessorInfo(name,
getter, setter, data,
settings, attributes);
i::Handle<i::Object> result = i::SetAccessor(Utils::OpenHandle(this), info);
return !result.is_null() && !result->IsUndefined();
}
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();
}
Local<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.IsProperty()) {
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.
}
Local<Value> v8::Object::GetRealNamedProperty(Handle<String> key) {
ON_BAILOUT("v8::Object::GetRealNamedProperty()", 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->LookupRealNamedProperty(*key_obj, &lookup);
if (lookup.IsProperty()) {
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;
HandleScope scope;
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);
}
bool v8::Object::IsDirty() {
return Utils::OpenHandle(this)->IsDirty();
}
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;
HandleScope scope;
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;
HandleScope scope;
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;
HandleScope scope;
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;
HandleScope scope;
if (!ApiCheck(length <= i::PixelArray::kMaxLength,
"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);
}
void v8::Object::SetIndexedPropertiesToExternalArrayData(
void* data,
ExternalArrayType array_type,
int length) {
ON_BAILOUT("v8::SetIndexedPropertiesToExternalArrayData()", return);
ENTER_V8;
HandleScope scope;
if (!ApiCheck(length <= i::ExternalArray::kMaxLength,
"v8::Object::SetIndexedPropertiesToExternalArrayData()",
"length exceeds max acceptable value")) {
return;
}
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
if (!ApiCheck(!self->IsJSArray(),
"v8::Object::SetIndexedPropertiesToExternalArrayData()",
"JSArray is not supported")) {
return;
}
i::Handle<i::ExternalArray> array =
i::Factory::NewExternalArray(length, array_type, data);
self->set_elements(*array);
}
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()));
}
ScriptOrigin Function::GetScriptOrigin() const {
i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
if (func->shared()->script()->IsScript()) {
i::Handle<i::Script> script(i::Script::cast(func->shared()->script()));
v8::ScriptOrigin origin(
Utils::ToLocal(i::Handle<i::Object>(script->name())),
v8::Integer::New(script->line_offset()->value()),
v8::Integer::New(script->column_offset()->value()));
return origin;
}
return v8::ScriptOrigin(Handle<Value>());
}
const int Function::kLineOffsetNotFound = -1;
int Function::GetScriptLineNumber() const {
i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
if (func->shared()->script()->IsScript()) {
i::Handle<i::Script> script(i::Script::cast(func->shared()->script()));
return i::GetScriptLineNumber(script, func->shared()->start_position());
}
return kLineOffsetNotFound;
}
namespace {
// Tracks string usage to help make better decisions when
// externalizing strings.
//
// Implementation note: internally this class only tracks fresh
// strings and keeps a single use counter for them.
class StringTracker {
public:
// Records that the given string's characters were copied to some
// external buffer. If this happens often we should honor
// externalization requests for the string.
static void RecordWrite(i::Handle<i::String> string) {
i::Address address = reinterpret_cast<i::Address>(*string);
i::Address top = i::Heap::NewSpaceTop();
if (IsFreshString(address, top)) {
IncrementUseCount(top);
}
}
// Estimates freshness and use frequency of the given string based
// on how close it is to the new space top and the recorded usage
// history.
static inline bool IsFreshUnusedString(i::Handle<i::String> string) {
i::Address address = reinterpret_cast<i::Address>(*string);
i::Address top = i::Heap::NewSpaceTop();
return IsFreshString(address, top) && IsUseCountLow(top);
}
private:
static inline bool IsFreshString(i::Address string, i::Address top) {
return top - kFreshnessLimit <= string && string <= top;
}
static inline bool IsUseCountLow(i::Address top) {
if (last_top_ != top) return true;
return use_count_ < kUseLimit;
}
static inline void IncrementUseCount(i::Address top) {
if (last_top_ != top) {
use_count_ = 0;
last_top_ = top;
}
++use_count_;
}
// How close to the new space top a fresh string has to be.
static const int kFreshnessLimit = 1024;
// The number of uses required to consider a string useful.
static const int kUseLimit = 32;
// Single use counter shared by all fresh strings.
static int use_count_;
// Last new space top when the use count above was valid.
static i::Address last_top_;
};
int StringTracker::use_count_ = 0;
i::Address StringTracker::last_top_ = NULL;
} // namespace
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,
int* nchars_ref,
WriteHints hints) const {
if (IsDeadCheck("v8::String::WriteUtf8()")) return 0;
LOG_API("String::WriteUtf8");
ENTER_V8;
i::Handle<i::String> str = Utils::OpenHandle(this);
StringTracker::RecordWrite(str);
if (hints & HINT_MANY_WRITES_EXPECTED) {
// Flatten the string for efficiency. This applies whether we are
// using StringInputBuffer or Get(i) to access the characters.
str->TryFlatten();
}
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;
int nchars = 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;
nchars++;
}
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;
nchars++;
} else {
// We've reached the end of the buffer
break;
}
}
}
if (nchars_ref != NULL) *nchars_ref = nchars;
if (i == len && (capacity == -1 || pos < capacity))
buffer[pos++] = '\0';
return pos;
}
int String::WriteAscii(char* buffer,
int start,
int length,
WriteHints hints) 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);
StringTracker::RecordWrite(str);
if (hints & HINT_MANY_WRITES_EXPECTED) {
// Flatten the string for efficiency. This applies whether we are
// using StringInputBuffer or Get(i) to access the characters.
str->TryFlatten();
}
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,
WriteHints hints) 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);
StringTracker::RecordWrite(str);
if (hints & HINT_MANY_WRITES_EXPECTED) {
// Flatten the string for efficiency. This applies whether we are
// using StringInputBuffer or Get(i) to access the characters.
str->TryFlatten();
}
int end = length;
if ( (length == -1) || (length > str->length() - start) )
end = str->length() - start;
if (end < 0) return 0;
i::String::WriteToFlat(*str, buffer, start, end);
if (length == -1 || end < length)
buffer[end] = '\0';
return end;
}
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();
}
void v8::String::VerifyExternalStringResource(
v8::String::ExternalStringResource* value) const {
i::Handle<i::String> str = Utils::OpenHandle(this);
v8::String::ExternalStringResource* expected;
if (i::StringShape(*str).IsExternalTwoByte()) {
void* resource = i::Handle<i::ExternalTwoByteString>::cast(str)->resource();
expected = reinterpret_cast<ExternalStringResource*>(resource);
} else {
expected = NULL;
}
CHECK_EQ(expected, value);
}
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());
}
}
uint32_t Uint32::Value() const {
if (IsDeadCheck("v8::Uint32::Value()")) return 0;
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsSmi()) {
return i::Smi::cast(*obj)->value();
} else {
return static_cast<uint32_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::CheckedGetInternalField(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));
Local<Value> result = Utils::ToLocal(value);
#ifdef DEBUG
Local<Value> unchecked = UncheckedGetInternalField(index);
ASSERT(unchecked.IsEmpty() || (unchecked == result));
#endif
return result;
}
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::SetPointerInInternalField(int index, void* value) {
ENTER_V8;
i::Object* as_object = reinterpret_cast<i::Object*>(value);
if (as_object->IsSmi()) {
Utils::OpenHandle(this)->SetInternalField(index, as_object);
return;
}
HandleScope scope;
i::Handle<i::Proxy> proxy =
i::Factory::NewProxy(reinterpret_cast<i::Address>(value), i::TENURED);
if (!proxy.is_null())
Utils::OpenHandle(this)->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;
return i::V8::Initialize(NULL);
}
bool v8::V8::Dispose() {
i::V8::TearDown();
return true;
}
HeapStatistics::HeapStatistics(): total_heap_size_(0), used_heap_size_(0) { }
void v8::V8::GetHeapStatistics(HeapStatistics* heap_statistics) {
heap_statistics->set_total_heap_size(i::Heap::CommittedMemory());
heap_statistics->set_used_heap_size(i::Heap::SizeOfObjects());
}
bool v8::V8::IdleNotification() {
// Returning true tells the caller that it need not
// continue to call IdleNotification.
if (!i::V8::IsRunning()) return true;
return i::V8::IdleNotification();
}
void v8::V8::LowMemoryNotification() {
if (!i::V8::IsRunning()) return;
i::Heap::CollectAllGarbage(true);
}
int v8::V8::ContextDisposedNotification() {
if (!i::V8::IsRunning()) return 0;
return i::Heap::NotifyContextDisposed();
}
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;
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 (env.is_null())
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::Object> current = i::Top::global_context();
if (current.is_null()) return Local<Context>();
i::Handle<i::Context> context = i::Handle<i::Context>::cast(current);
return Utils::ToLocal(context);
}
v8::Local<v8::Context> Context::GetCalling() {
if (IsDeadCheck("v8::Context::GetCalling()")) return Local<Context>();
i::Handle<i::Object> calling = i::Top::GetCallingGlobalContext();
if (calling.is_null()) return Local<Context>();
i::Handle<i::Context> context = i::Handle<i::Context>::cast(calling);
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);
}
void Context::ReattachGlobal(Handle<Object> global_object) {
if (IsDeadCheck("v8::Context::ReattachGlobal()")) 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::ReattachGlobal(context, Utils::OpenHandle(*global_object));
}
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());
}
Local<Value> v8::External::Wrap(void* data) {
STATIC_ASSERT(sizeof(data) == sizeof(i::Address));
LOG_API("External::Wrap");
EnsureInitialized("v8::External::Wrap()");
ENTER_V8;
i::Object* as_object = reinterpret_cast<i::Object*>(data);
if (as_object->IsSmi()) {
return Utils::ToLocal(i::Handle<i::Object>(as_object));
}
return ExternalNewImpl(data);
}
void* v8::Object::SlowGetPointerFromInternalField(int index) {
i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
i::Object* value = obj->GetInternalField(index);
if (value->IsSmi()) {
return value;
} else if (value->IsProxy()) {
return reinterpret_cast<void*>(i::Proxy::cast(value)->proxy());
} else {
return NULL;
}
}
void* v8::External::FullUnwrap(v8::Handle<v8::Value> wrapper) {
if (IsDeadCheck("v8::External::Unwrap()")) return 0;
i::Handle<i::Object> obj = Utils::OpenHandle(*wrapper);
void* result;
if (obj->IsSmi()) {
// The external value was an aligned pointer.
result = *obj;
} else if (obj->IsProxy()) {
result = ExternalValueImpl(obj);
} else {
result = NULL;
}
ASSERT_EQ(result, QuickUnwrap(wrapper));
return result;
}
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 = i::StrLength(data);
i::Handle<i::String> result =
i::Factory::NewStringFromUtf8(i::Vector<const char>(data, length));
return Utils::ToLocal(result);
}
Local<String> v8::String::Concat(Handle<String> left, Handle<String> right) {
EnsureInitialized("v8::String::New()");
LOG_API("String::New(char)");
ENTER_V8;
i::Handle<i::String> left_string = Utils::OpenHandle(*left);
i::Handle<i::String> right_string = Utils::OpenHandle(*right);
i::Handle<i::String> result = i::Factory::NewConsString(left_string,
right_string);
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 = i::StrLength(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;
}
Local<String> v8::String::NewExternal(
v8::String::ExternalStringResource* resource) {
EnsureInitialized("v8::String::NewExternal()");
LOG_API("String::NewExternal");
ENTER_V8;
i::Handle<i::String> result = NewExternalStringHandle(resource);
i::ExternalStringTable::AddString(*result);
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);
if (StringTracker::IsFreshUnusedString(obj)) return false;
bool result = obj->MakeExternal(resource);
if (result && !obj->IsSymbol()) {
i::ExternalStringTable::AddString(*obj);
}
return result;
}
Local<String> v8::String::NewExternal(
v8::String::ExternalAsciiStringResource* resource) {
EnsureInitialized("v8::String::NewExternal()");
LOG_API("String::NewExternal");
ENTER_V8;
i::Handle<i::String> result = NewExternalAsciiStringHandle(resource);
i::ExternalStringTable::AddString(*result);
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);
if (StringTracker::IsFreshUnusedString(obj)) return false;
bool result = obj->MakeExternal(resource);
if (result && !obj->IsSymbol()) {
i::ExternalStringTable::AddString(*obj);
}
return result;
}
bool v8::String::CanMakeExternal() {
if (IsDeadCheck("v8::String::CanMakeExternal()")) return false;
i::Handle<i::String> obj = Utils::OpenHandle(this);
if (StringTracker::IsFreshUnusedString(obj)) return false;
int size = obj->Size(); // Byte size of the original string.
if (size < i::ExternalString::kSize)
return false;
i::StringShape shape(*obj);
return !shape.IsExternal();
}
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");
if (isnan(time)) {
// Introduce only canonical NaN value into the VM, to avoid signaling NaNs.
time = i::OS::nan_value();
}
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();
ENTER_V8;
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 = i::StrLength(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()");
if (isnan(value)) {
// Introduce only canonical NaN value into the VM, to avoid signaling NaNs.
value = i::OS::nan_value();
}
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);
}
Local<Integer> Integer::NewFromUnsigned(uint32_t value) {
bool fits_into_int32_t = (value & (1 << 31)) == 0;
if (fits_into_int32_t) {
return Integer::New(static_cast<int32_t>(value));
}
ENTER_V8;
i::Handle<i::Object> result = i::Factory::NewNumber(value);
return Utils::IntegerToLocal(result);
}
void V8::IgnoreOutOfMemoryException() {
thread_local.set_ignore_out_of_memory(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::AddGCPrologueCallback(GCPrologueCallback callback, GCType gc_type) {
if (IsDeadCheck("v8::V8::AddGCPrologueCallback()")) return;
i::Heap::AddGCPrologueCallback(callback, gc_type);
}
void V8::RemoveGCPrologueCallback(GCPrologueCallback callback) {
if (IsDeadCheck("v8::V8::RemoveGCPrologueCallback()")) return;
i::Heap::RemoveGCPrologueCallback(callback);
}
void V8::AddGCEpilogueCallback(GCEpilogueCallback callback, GCType gc_type) {
if (IsDeadCheck("v8::V8::AddGCEpilogueCallback()")) return;
i::Heap::AddGCEpilogueCallback(callback, gc_type);
}
void V8::RemoveGCEpilogueCallback(GCEpilogueCallback callback) {
if (IsDeadCheck("v8::V8::RemoveGCEpilogueCallback()")) return;
i::Heap::RemoveGCEpilogueCallback(callback);
}
void V8::PauseProfiler() {
#ifdef ENABLE_LOGGING_AND_PROFILING
PauseProfilerEx(PROFILER_MODULE_CPU);
#endif
}
void V8::ResumeProfiler() {
#ifdef ENABLE_LOGGING_AND_PROFILING
ResumeProfilerEx(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, int tag) {
#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.
// Make a GC prior to taking a snapshot.
i::Heap::CollectAllGarbage(false);
// 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, tag);
i::Heap::CollectAllGarbage(false);
i::Logger::PauseProfiler(~current_flags & flags, tag);
} else {
i::Logger::ResumeProfiler(flags, tag);
}
#endif
}
void V8::PauseProfilerEx(int flags, int tag) {
#ifdef ENABLE_LOGGING_AND_PROFILING
i::Logger::PauseProfiler(flags, tag);
#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
ASSERT(max_size >= kMinimumSizeForLogLinesBuffer);
return i::Logger::GetLogLines(from_pos, dest_buf, max_size);
#endif
return 0;
}
int V8::GetCurrentThreadId() {
API_ENTRY_CHECK("V8::GetCurrentThreadId()");
EnsureInitialized("V8::GetCurrentThreadId()");
return i::Top::thread_id();
}
void V8::TerminateExecution(int thread_id) {
if (!i::V8::IsRunning()) return;
API_ENTRY_CHECK("V8::GetCurrentThreadId()");
// If the thread_id identifies the current thread just terminate
// execution right away. Otherwise, ask the thread manager to
// terminate the thread with the given id if any.
if (thread_id == i::Top::thread_id()) {
i::StackGuard::TerminateExecution();
} else {
i::ThreadManager::TerminateExecution(thread_id);
}
}
void V8::TerminateExecution() {
if (!i::V8::IsRunning()) return;
i::StackGuard::TerminateExecution();
}
bool V8::IsExecutionTerminating() {
if (!i::V8::IsRunning()) return false;
if (i::Top::has_scheduled_exception()) {
return i::Top::scheduled_exception() == i::Heap::termination_exception();
}
return false;
}
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
static v8::Debug::EventCallback event_callback = NULL;
static void EventCallbackWrapper(const v8::Debug::EventDetails& event_details) {
if (event_callback) {
event_callback(event_details.GetEvent(),
event_details.GetExecutionState(),
event_details.GetEventData(),
event_details.GetCallbackData());
}
}
bool Debug::SetDebugEventListener(EventCallback that, Handle<Value> data) {
EnsureInitialized("v8::Debug::SetDebugEventListener()");
ON_BAILOUT("v8::Debug::SetDebugEventListener()", return false);
ENTER_V8;
event_callback = that;
HandleScope scope;
i::Handle<i::Object> proxy = i::Factory::undefined_value();
if (that != NULL) {
proxy = i::Factory::NewProxy(FUNCTION_ADDR(EventCallbackWrapper));
}
i::Debugger::SetEventListener(proxy, Utils::OpenHandle(*data));
return true;
}
bool Debug::SetDebugEventListener2(EventCallback2 that, Handle<Value> data) {
EnsureInitialized("v8::Debug::SetDebugEventListener2()");
ON_BAILOUT("v8::Debug::SetDebugEventListener2()", 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;
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);
}
void Debug::SetDebugMessageDispatchHandler(
DebugMessageDispatchHandler handler, bool provide_locker) {
EnsureInitialized("v8::Debug::SetDebugMessageDispatchHandler");
ENTER_V8;
i::Debugger::SetDebugMessageDispatchHandler(handler, provide_locker);
}
Local<Value> Debug::Call(v8::Handle<v8::Function> fun,
v8::Handle<v8::Value> data) {
if (!i::V8::IsRunning()) return Local<Value>();
ON_BAILOUT("v8::Debug::Call()", return Local<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);
}
Local<Value> Debug::GetMirror(v8::Handle<v8::Value> obj) {
if (!i::V8::IsRunning()) return Local<Value>();
ON_BAILOUT("v8::Debug::GetMirror()", return Local<Value>());
ENTER_V8;
v8::HandleScope scope;
i::Debug::Load();
i::Handle<i::JSObject> debug(i::Debug::debug_context()->global());
i::Handle<i::String> name = i::Factory::LookupAsciiSymbol("MakeMirror");
i::Handle<i::Object> fun_obj = i::GetProperty(debug, name);
i::Handle<i::JSFunction> fun = i::Handle<i::JSFunction>::cast(fun_obj);
v8::Handle<v8::Function> v8_fun = Utils::ToLocal(fun);
const int kArgc = 1;
v8::Handle<v8::Value> argv[kArgc] = { obj };
EXCEPTION_PREAMBLE();
v8::Handle<v8::Value> result = v8_fun->Call(Utils::ToLocal(debug),
kArgc,
argv);
EXCEPTION_BAILOUT_CHECK(Local<Value>());
return scope.Close(result);
}
bool Debug::EnableAgent(const char* name, int port, bool wait_for_connection) {
return i::Debugger::StartAgent(name, port, wait_for_connection);
}
void Debug::ProcessDebugMessages() {
i::Execution::ProcessDebugMesssages(true);
}
Local<Context> Debug::GetDebugContext() {
EnsureInitialized("v8::Debug::GetDebugContext()");
ENTER_V8;
return Utils::ToLocal(i::Debugger::GetDebugContext());
}
#endif // ENABLE_DEBUGGER_SUPPORT
#ifdef ENABLE_LOGGING_AND_PROFILING
Handle<String> CpuProfileNode::GetFunctionName() const {
IsDeadCheck("v8::CpuProfileNode::GetFunctionName");
const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
const i::CodeEntry* entry = node->entry();
if (!entry->has_name_prefix()) {
return Handle<String>(ToApi<String>(
i::Factory::LookupAsciiSymbol(entry->name())));
} else {
return Handle<String>(ToApi<String>(i::Factory::NewConsString(
i::Factory::LookupAsciiSymbol(entry->name_prefix()),
i::Factory::LookupAsciiSymbol(entry->name()))));
}
}
Handle<String> CpuProfileNode::GetScriptResourceName() const {
IsDeadCheck("v8::CpuProfileNode::GetScriptResourceName");
const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
return Handle<String>(ToApi<String>(i::Factory::LookupAsciiSymbol(
node->entry()->resource_name())));
}
int CpuProfileNode::GetLineNumber() const {
IsDeadCheck("v8::CpuProfileNode::GetLineNumber");
return reinterpret_cast<const i::ProfileNode*>(this)->entry()->line_number();
}
double CpuProfileNode::GetTotalTime() const {
IsDeadCheck("v8::CpuProfileNode::GetTotalTime");
return reinterpret_cast<const i::ProfileNode*>(this)->GetTotalMillis();
}
double CpuProfileNode::GetSelfTime() const {
IsDeadCheck("v8::CpuProfileNode::GetSelfTime");
return reinterpret_cast<const i::ProfileNode*>(this)->GetSelfMillis();
}
double CpuProfileNode::GetTotalSamplesCount() const {
IsDeadCheck("v8::CpuProfileNode::GetTotalSamplesCount");
return reinterpret_cast<const i::ProfileNode*>(this)->total_ticks();
}
double CpuProfileNode::GetSelfSamplesCount() const {
IsDeadCheck("v8::CpuProfileNode::GetSelfSamplesCount");
return reinterpret_cast<const i::ProfileNode*>(this)->self_ticks();
}
unsigned CpuProfileNode::GetCallUid() const {
IsDeadCheck("v8::CpuProfileNode::GetCallUid");
return reinterpret_cast<const i::ProfileNode*>(this)->entry()->call_uid();
}
int CpuProfileNode::GetChildrenCount() const {
IsDeadCheck("v8::CpuProfileNode::GetChildrenCount");
return reinterpret_cast<const i::ProfileNode*>(this)->children()->length();
}
const CpuProfileNode* CpuProfileNode::GetChild(int index) const {
IsDeadCheck("v8::CpuProfileNode::GetChild");
const i::ProfileNode* child =
reinterpret_cast<const i::ProfileNode*>(this)->children()->at(index);
return reinterpret_cast<const CpuProfileNode*>(child);
}
unsigned CpuProfile::GetUid() const {
IsDeadCheck("v8::CpuProfile::GetUid");
return reinterpret_cast<const i::CpuProfile*>(this)->uid();
}
Handle<String> CpuProfile::GetTitle() const {
IsDeadCheck("v8::CpuProfile::GetTitle");
const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
return Handle<String>(ToApi<String>(i::Factory::LookupAsciiSymbol(
profile->title())));
}
const CpuProfileNode* CpuProfile::GetBottomUpRoot() const {
IsDeadCheck("v8::CpuProfile::GetBottomUpRoot");
const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
return reinterpret_cast<const CpuProfileNode*>(profile->bottom_up()->root());
}
const CpuProfileNode* CpuProfile::GetTopDownRoot() const {
IsDeadCheck("v8::CpuProfile::GetTopDownRoot");
const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
return reinterpret_cast<const CpuProfileNode*>(profile->top_down()->root());
}
int CpuProfiler::GetProfilesCount() {
IsDeadCheck("v8::CpuProfiler::GetProfilesCount");
return i::CpuProfiler::GetProfilesCount();
}
const CpuProfile* CpuProfiler::GetProfile(int index,
Handle<Value> security_token) {
IsDeadCheck("v8::CpuProfiler::GetProfile");
return reinterpret_cast<const CpuProfile*>(
i::CpuProfiler::GetProfile(
security_token.IsEmpty() ? NULL : *Utils::OpenHandle(*security_token),
index));
}
const CpuProfile* CpuProfiler::FindProfile(unsigned uid,
Handle<Value> security_token) {
IsDeadCheck("v8::CpuProfiler::FindProfile");
return reinterpret_cast<const CpuProfile*>(
i::CpuProfiler::FindProfile(
security_token.IsEmpty() ? NULL : *Utils::OpenHandle(*security_token),
uid));
}
void CpuProfiler::StartProfiling(Handle<String> title) {
IsDeadCheck("v8::CpuProfiler::StartProfiling");
i::CpuProfiler::StartProfiling(*Utils::OpenHandle(*title));
}
const CpuProfile* CpuProfiler::StopProfiling(Handle<String> title,
Handle<Value> security_token) {
IsDeadCheck("v8::CpuProfiler::StopProfiling");
return reinterpret_cast<const CpuProfile*>(
i::CpuProfiler::StopProfiling(
security_token.IsEmpty() ? NULL : *Utils::OpenHandle(*security_token),
*Utils::OpenHandle(*title)));
}
#endif // ENABLE_LOGGING_AND_PROFILING
namespace internal {
HandleScopeImplementer* HandleScopeImplementer::instance() {
return &thread_local;
}
void HandleScopeImplementer::FreeThreadResources() {
thread_local.Free();
}
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));
ResetAfterArchive();
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::IterateThis(ObjectVisitor* v) {
// Iterate over all handles in the blocks except for the last.
for (int i = blocks()->length() - 2; i >= 0; --i) {
Object** block = blocks()->at(i);
v->VisitPointers(block, &block[kHandleBlockSize]);
}
// Iterate over live handles in the last block (if any).
if (!blocks()->is_empty()) {
v->VisitPointers(blocks()->last(), handle_scope_data_.next);
}
if (!saved_contexts_.is_empty()) {
Object** start = reinterpret_cast<Object**>(&saved_contexts_.first());
v->VisitPointers(start, start + saved_contexts_.length());
}
}
void HandleScopeImplementer::Iterate(ObjectVisitor* v) {
v8::ImplementationUtilities::HandleScopeData* current =
v8::ImplementationUtilities::CurrentHandleScope();
thread_local.handle_scope_data_ = *current;
thread_local.IterateThis(v);
}
char* HandleScopeImplementer::Iterate(ObjectVisitor* v, char* storage) {
HandleScopeImplementer* thread_local =
reinterpret_cast<HandleScopeImplementer*>(storage);
thread_local->IterateThis(v);
return storage + ArchiveSpacePerThread();
}
} } // namespace v8::internal
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