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chromium / v8 / v8.git / refs/heads/chromium/2931 / . / src / bootstrapper.cc
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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/bootstrapper.h"
#include "src/accessors.h"
#include "src/api-natives.h"
#include "src/base/ieee754.h"
#include "src/code-stubs.h"
#include "src/compiler.h"
#include "src/extensions/externalize-string-extension.h"
#include "src/extensions/free-buffer-extension.h"
#include "src/extensions/gc-extension.h"
#include "src/extensions/ignition-statistics-extension.h"
#include "src/extensions/statistics-extension.h"
#include "src/extensions/trigger-failure-extension.h"
#include "src/heap/heap.h"
#include "src/isolate-inl.h"
#include "src/snapshot/natives.h"
#include "src/snapshot/snapshot.h"
#include "src/wasm/wasm-js.h"
namespace v8 {
namespace internal {
Bootstrapper::Bootstrapper(Isolate* isolate)
: isolate_(isolate),
nesting_(0),
extensions_cache_(Script::TYPE_EXTENSION) {}
template <class Source>
Handle<String> Bootstrapper::SourceLookup(int index) {
DCHECK(0 <= index && index < Source::GetBuiltinsCount());
Heap* heap = isolate_->heap();
if (Source::GetSourceCache(heap)->get(index)->IsUndefined(isolate_)) {
// We can use external strings for the natives.
Vector<const char> source = Source::GetScriptSource(index);
NativesExternalStringResource* resource =
new NativesExternalStringResource(source.start(), source.length());
Handle<ExternalOneByteString> source_code =
isolate_->factory()->NewNativeSourceString(resource);
// Mark this external string with a special map.
DCHECK(source_code->is_short());
Source::GetSourceCache(heap)->set(index, *source_code);
}
Handle<Object> cached_source(Source::GetSourceCache(heap)->get(index),
isolate_);
return Handle<String>::cast(cached_source);
}
template Handle<String> Bootstrapper::SourceLookup<Natives>(int index);
template Handle<String> Bootstrapper::SourceLookup<ExperimentalNatives>(
int index);
template Handle<String> Bootstrapper::SourceLookup<ExperimentalExtraNatives>(
int index);
template Handle<String> Bootstrapper::SourceLookup<ExtraNatives>(int index);
void Bootstrapper::Initialize(bool create_heap_objects) {
extensions_cache_.Initialize(isolate_, create_heap_objects);
}
static const char* GCFunctionName() {
bool flag_given = FLAG_expose_gc_as != NULL && strlen(FLAG_expose_gc_as) != 0;
return flag_given ? FLAG_expose_gc_as : "gc";
}
v8::Extension* Bootstrapper::free_buffer_extension_ = NULL;
v8::Extension* Bootstrapper::gc_extension_ = NULL;
v8::Extension* Bootstrapper::externalize_string_extension_ = NULL;
v8::Extension* Bootstrapper::statistics_extension_ = NULL;
v8::Extension* Bootstrapper::trigger_failure_extension_ = NULL;
v8::Extension* Bootstrapper::ignition_statistics_extension_ = NULL;
void Bootstrapper::InitializeOncePerProcess() {
free_buffer_extension_ = new FreeBufferExtension;
v8::RegisterExtension(free_buffer_extension_);
gc_extension_ = new GCExtension(GCFunctionName());
v8::RegisterExtension(gc_extension_);
externalize_string_extension_ = new ExternalizeStringExtension;
v8::RegisterExtension(externalize_string_extension_);
statistics_extension_ = new StatisticsExtension;
v8::RegisterExtension(statistics_extension_);
trigger_failure_extension_ = new TriggerFailureExtension;
v8::RegisterExtension(trigger_failure_extension_);
ignition_statistics_extension_ = new IgnitionStatisticsExtension;
v8::RegisterExtension(ignition_statistics_extension_);
}
void Bootstrapper::TearDownExtensions() {
delete free_buffer_extension_;
free_buffer_extension_ = NULL;
delete gc_extension_;
gc_extension_ = NULL;
delete externalize_string_extension_;
externalize_string_extension_ = NULL;
delete statistics_extension_;
statistics_extension_ = NULL;
delete trigger_failure_extension_;
trigger_failure_extension_ = NULL;
delete ignition_statistics_extension_;
ignition_statistics_extension_ = NULL;
}
void DeleteNativeSources(Object* maybe_array) {
if (maybe_array->IsFixedArray()) {
FixedArray* array = FixedArray::cast(maybe_array);
Isolate* isolate = array->GetIsolate();
for (int i = 0; i < array->length(); i++) {
Object* natives_source = array->get(i);
if (!natives_source->IsUndefined(isolate)) {
const NativesExternalStringResource* resource =
reinterpret_cast<const NativesExternalStringResource*>(
ExternalOneByteString::cast(natives_source)->resource());
delete resource;
}
}
}
}
void Bootstrapper::TearDown() {
DeleteNativeSources(Natives::GetSourceCache(isolate_->heap()));
DeleteNativeSources(ExperimentalNatives::GetSourceCache(isolate_->heap()));
DeleteNativeSources(ExtraNatives::GetSourceCache(isolate_->heap()));
DeleteNativeSources(
ExperimentalExtraNatives::GetSourceCache(isolate_->heap()));
extensions_cache_.Initialize(isolate_, false); // Yes, symmetrical
}
class Genesis BASE_EMBEDDED {
public:
Genesis(Isolate* isolate, MaybeHandle<JSGlobalProxy> maybe_global_proxy,
v8::Local<v8::ObjectTemplate> global_proxy_template,
v8::ExtensionConfiguration* extensions, size_t context_snapshot_index,
GlobalContextType context_type);
Genesis(Isolate* isolate, MaybeHandle<JSGlobalProxy> maybe_global_proxy,
v8::Local<v8::ObjectTemplate> global_proxy_template);
~Genesis() { }
Isolate* isolate() const { return isolate_; }
Factory* factory() const { return isolate_->factory(); }
Heap* heap() const { return isolate_->heap(); }
Handle<Context> result() { return result_; }
Handle<JSGlobalProxy> global_proxy() { return global_proxy_; }
private:
Handle<Context> native_context() { return native_context_; }
// Creates some basic objects. Used for creating a context from scratch.
void CreateRoots();
// Creates the empty function. Used for creating a context from scratch.
Handle<JSFunction> CreateEmptyFunction(Isolate* isolate);
// Creates the ThrowTypeError function. ECMA 5th Ed. 13.2.3
Handle<JSFunction> GetRestrictedFunctionPropertiesThrower();
Handle<JSFunction> GetStrictArgumentsPoisonFunction();
Handle<JSFunction> GetThrowTypeErrorIntrinsic(Builtins::Name builtin_name);
void CreateStrictModeFunctionMaps(Handle<JSFunction> empty);
void CreateIteratorMaps(Handle<JSFunction> empty);
void CreateAsyncFunctionMaps(Handle<JSFunction> empty);
void CreateJSProxyMaps();
// Make the "arguments" and "caller" properties throw a TypeError on access.
void AddRestrictedFunctionProperties(Handle<JSFunction> empty);
// Creates the global objects using the global proxy and the template passed
// in through the API. We call this regardless of whether we are building a
// context from scratch or using a deserialized one from the partial snapshot
// but in the latter case we don't use the objects it produces directly, as
// we have to used the deserialized ones that are linked together with the
// rest of the context snapshot.
Handle<JSGlobalObject> CreateNewGlobals(
v8::Local<v8::ObjectTemplate> global_proxy_template,
Handle<JSGlobalProxy> global_proxy);
// Hooks the given global proxy into the context. If the context was created
// by deserialization then this will unhook the global proxy that was
// deserialized, leaving the GC to pick it up.
void HookUpGlobalProxy(Handle<JSGlobalObject> global_object,
Handle<JSGlobalProxy> global_proxy);
// Similarly, we want to use the global that has been created by the templates
// passed through the API. The global from the snapshot is detached from the
// other objects in the snapshot.
void HookUpGlobalObject(Handle<JSGlobalObject> global_object);
// The native context has a ScriptContextTable that store declarative bindings
// made in script scopes. Add a "this" binding to that table pointing to the
// global proxy.
void InstallGlobalThisBinding();
// New context initialization. Used for creating a context from scratch.
void InitializeGlobal(Handle<JSGlobalObject> global_object,
Handle<JSFunction> empty_function,
GlobalContextType context_type);
void InitializeExperimentalGlobal();
// Depending on the situation, expose and/or get rid of the utils object.
void ConfigureUtilsObject(GlobalContextType context_type);
#define DECLARE_FEATURE_INITIALIZATION(id, descr) \
void InitializeGlobal_##id();
HARMONY_INPROGRESS(DECLARE_FEATURE_INITIALIZATION)
HARMONY_STAGED(DECLARE_FEATURE_INITIALIZATION)
HARMONY_SHIPPING(DECLARE_FEATURE_INITIALIZATION)
#undef DECLARE_FEATURE_INITIALIZATION
Handle<JSFunction> InstallArrayBuffer(Handle<JSObject> target,
const char* name, Builtins::Name call,
BuiltinFunctionId id);
Handle<JSFunction> InstallInternalArray(Handle<JSObject> target,
const char* name,
ElementsKind elements_kind);
bool InstallNatives(GlobalContextType context_type);
void InstallTypedArray(const char* name, ElementsKind elements_kind,
Handle<JSFunction>* fun);
bool InstallExperimentalNatives();
bool InstallExtraNatives();
bool InstallExperimentalExtraNatives();
bool InstallDebuggerNatives();
void InstallBuiltinFunctionIds();
void InstallExperimentalBuiltinFunctionIds();
void InitializeNormalizedMapCaches();
enum ExtensionTraversalState {
UNVISITED, VISITED, INSTALLED
};
class ExtensionStates {
public:
ExtensionStates();
ExtensionTraversalState get_state(RegisteredExtension* extension);
void set_state(RegisteredExtension* extension,
ExtensionTraversalState state);
private:
base::HashMap map_;
DISALLOW_COPY_AND_ASSIGN(ExtensionStates);
};
// Used both for deserialized and from-scratch contexts to add the extensions
// provided.
static bool InstallExtensions(Handle<Context> native_context,
v8::ExtensionConfiguration* extensions);
static bool InstallAutoExtensions(Isolate* isolate,
ExtensionStates* extension_states);
static bool InstallRequestedExtensions(Isolate* isolate,
v8::ExtensionConfiguration* extensions,
ExtensionStates* extension_states);
static bool InstallExtension(Isolate* isolate,
const char* name,
ExtensionStates* extension_states);
static bool InstallExtension(Isolate* isolate,
v8::RegisteredExtension* current,
ExtensionStates* extension_states);
static bool InstallSpecialObjects(Handle<Context> native_context);
bool ConfigureApiObject(Handle<JSObject> object,
Handle<ObjectTemplateInfo> object_template);
bool ConfigureGlobalObjects(
v8::Local<v8::ObjectTemplate> global_proxy_template);
// Migrates all properties from the 'from' object to the 'to'
// object and overrides the prototype in 'to' with the one from
// 'from'.
void TransferObject(Handle<JSObject> from, Handle<JSObject> to);
void TransferNamedProperties(Handle<JSObject> from, Handle<JSObject> to);
void TransferIndexedProperties(Handle<JSObject> from, Handle<JSObject> to);
void MakeFunctionInstancePrototypeWritable();
void SetStrictFunctionInstanceDescriptor(Handle<Map> map,
FunctionMode function_mode);
static bool CallUtilsFunction(Isolate* isolate, const char* name);
static bool CompileExtension(Isolate* isolate, v8::Extension* extension);
Isolate* isolate_;
Handle<Context> result_;
Handle<Context> native_context_;
Handle<JSGlobalProxy> global_proxy_;
// Function maps. Function maps are created initially with a read only
// prototype for the processing of JS builtins. Later the function maps are
// replaced in order to make prototype writable. These are the final, writable
// prototype, maps.
Handle<Map> sloppy_function_map_writable_prototype_;
Handle<Map> strict_function_map_writable_prototype_;
Handle<JSFunction> strict_poison_function_;
Handle<JSFunction> restricted_function_properties_thrower_;
BootstrapperActive active_;
friend class Bootstrapper;
};
void Bootstrapper::Iterate(ObjectVisitor* v) {
extensions_cache_.Iterate(v);
v->Synchronize(VisitorSynchronization::kExtensions);
}
Handle<Context> Bootstrapper::CreateEnvironment(
MaybeHandle<JSGlobalProxy> maybe_global_proxy,
v8::Local<v8::ObjectTemplate> global_proxy_template,
v8::ExtensionConfiguration* extensions, size_t context_snapshot_index,
GlobalContextType context_type) {
HandleScope scope(isolate_);
Genesis genesis(isolate_, maybe_global_proxy, global_proxy_template,
extensions, context_snapshot_index, context_type);
Handle<Context> env = genesis.result();
if (env.is_null() || !InstallExtensions(env, extensions)) {
return Handle<Context>();
}
return scope.CloseAndEscape(env);
}
Handle<JSGlobalProxy> Bootstrapper::NewRemoteContext(
MaybeHandle<JSGlobalProxy> maybe_global_proxy,
v8::Local<v8::ObjectTemplate> global_proxy_template) {
HandleScope scope(isolate_);
Genesis genesis(isolate_, maybe_global_proxy, global_proxy_template);
Handle<JSGlobalProxy> global_proxy = genesis.global_proxy();
if (global_proxy.is_null()) return Handle<JSGlobalProxy>();
return scope.CloseAndEscape(global_proxy);
}
void Bootstrapper::DetachGlobal(Handle<Context> env) {
env->GetIsolate()->counters()->errors_thrown_per_context()->AddSample(
env->GetErrorsThrown());
Factory* factory = env->GetIsolate()->factory();
Handle<JSGlobalProxy> global_proxy(JSGlobalProxy::cast(env->global_proxy()));
global_proxy->set_native_context(*factory->null_value());
JSObject::ForceSetPrototype(global_proxy, factory->null_value());
global_proxy->map()->SetConstructor(*factory->null_value());
if (FLAG_track_detached_contexts) {
env->GetIsolate()->AddDetachedContext(env);
}
}
namespace {
void InstallFunction(Handle<JSObject> target, Handle<Name> property_name,
Handle<JSFunction> function, Handle<String> function_name,
PropertyAttributes attributes = DONT_ENUM) {
JSObject::AddProperty(target, property_name, function, attributes);
if (target->IsJSGlobalObject()) {
function->shared()->set_instance_class_name(*function_name);
}
function->shared()->set_native(true);
}
void InstallFunction(Handle<JSObject> target, Handle<JSFunction> function,
Handle<Name> name,
PropertyAttributes attributes = DONT_ENUM) {
Handle<String> name_string = Name::ToFunctionName(name).ToHandleChecked();
InstallFunction(target, name, function, name_string, attributes);
}
Handle<JSFunction> CreateFunction(Isolate* isolate, Handle<String> name,
InstanceType type, int instance_size,
MaybeHandle<JSObject> maybe_prototype,
Builtins::Name call,
bool strict_function_map = false) {
Factory* factory = isolate->factory();
Handle<Code> call_code(isolate->builtins()->builtin(call));
Handle<JSObject> prototype;
return maybe_prototype.ToHandle(&prototype)
? factory->NewFunction(name, call_code, prototype, type,
instance_size, strict_function_map)
: factory->NewFunctionWithoutPrototype(name, call_code,
strict_function_map);
}
Handle<JSFunction> InstallFunction(Handle<JSObject> target, Handle<Name> name,
InstanceType type, int instance_size,
MaybeHandle<JSObject> maybe_prototype,
Builtins::Name call,
PropertyAttributes attributes,
bool strict_function_map = false) {
Handle<String> name_string = Name::ToFunctionName(name).ToHandleChecked();
Handle<JSFunction> function =
CreateFunction(target->GetIsolate(), name_string, type, instance_size,
maybe_prototype, call, strict_function_map);
InstallFunction(target, name, function, name_string, attributes);
return function;
}
Handle<JSFunction> InstallFunction(Handle<JSObject> target, const char* name,
InstanceType type, int instance_size,
MaybeHandle<JSObject> maybe_prototype,
Builtins::Name call,
bool strict_function_map = false) {
Factory* const factory = target->GetIsolate()->factory();
PropertyAttributes attributes = DONT_ENUM;
return InstallFunction(target, factory->InternalizeUtf8String(name), type,
instance_size, maybe_prototype, call, attributes,
strict_function_map);
}
Handle<JSFunction> SimpleCreateFunction(Isolate* isolate, Handle<String> name,
Builtins::Name call, int len,
bool adapt) {
Handle<JSFunction> fun =
CreateFunction(isolate, name, JS_OBJECT_TYPE, JSObject::kHeaderSize,
MaybeHandle<JSObject>(), call);
if (adapt) {
fun->shared()->set_internal_formal_parameter_count(len);
} else {
fun->shared()->DontAdaptArguments();
}
fun->shared()->set_length(len);
return fun;
}
Handle<JSFunction> SimpleInstallFunction(Handle<JSObject> base,
Handle<String> name,
Builtins::Name call, int len,
bool adapt,
PropertyAttributes attrs = DONT_ENUM) {
Handle<JSFunction> fun =
SimpleCreateFunction(base->GetIsolate(), name, call, len, adapt);
InstallFunction(base, fun, name, attrs);
return fun;
}
Handle<JSFunction> SimpleInstallFunction(Handle<JSObject> base,
const char* name, Builtins::Name call,
int len, bool adapt,
PropertyAttributes attrs = DONT_ENUM) {
Factory* const factory = base->GetIsolate()->factory();
return SimpleInstallFunction(base, factory->InternalizeUtf8String(name), call,
len, adapt, attrs);
}
Handle<JSFunction> SimpleInstallFunction(Handle<JSObject> base,
const char* name, Builtins::Name call,
int len, bool adapt,
BuiltinFunctionId id) {
Handle<JSFunction> fun = SimpleInstallFunction(base, name, call, len, adapt);
fun->shared()->set_builtin_function_id(id);
return fun;
}
void SimpleInstallGetterSetter(Handle<JSObject> base, Handle<String> name,
Builtins::Name call_getter,
Builtins::Name call_setter,
PropertyAttributes attribs) {
Isolate* const isolate = base->GetIsolate();
Handle<String> getter_name =
Name::ToFunctionName(name, isolate->factory()->get_string())
.ToHandleChecked();
Handle<JSFunction> getter =
SimpleCreateFunction(isolate, getter_name, call_getter, 0, true);
getter->shared()->set_native(true);
Handle<String> setter_name =
Name::ToFunctionName(name, isolate->factory()->set_string())
.ToHandleChecked();
Handle<JSFunction> setter =
SimpleCreateFunction(isolate, setter_name, call_setter, 1, true);
setter->shared()->set_native(true);
JSObject::DefineAccessor(base, name, getter, setter, attribs).Check();
}
Handle<JSFunction> SimpleInstallGetter(Handle<JSObject> base,
Handle<String> name,
Handle<Name> property_name,
Builtins::Name call, bool adapt) {
Isolate* const isolate = base->GetIsolate();
Handle<String> getter_name =
Name::ToFunctionName(name, isolate->factory()->get_string())
.ToHandleChecked();
Handle<JSFunction> getter =
SimpleCreateFunction(isolate, getter_name, call, 0, adapt);
getter->shared()->set_native(true);
Handle<Object> setter = isolate->factory()->undefined_value();
JSObject::DefineAccessor(base, property_name, getter, setter, DONT_ENUM)
.Check();
return getter;
}
Handle<JSFunction> SimpleInstallGetter(Handle<JSObject> base,
Handle<String> name, Builtins::Name call,
bool adapt) {
return SimpleInstallGetter(base, name, name, call, adapt);
}
Handle<JSFunction> SimpleInstallGetter(Handle<JSObject> base,
Handle<String> name, Builtins::Name call,
bool adapt, BuiltinFunctionId id) {
Handle<JSFunction> fun = SimpleInstallGetter(base, name, call, adapt);
fun->shared()->set_builtin_function_id(id);
return fun;
}
} // namespace
Handle<JSFunction> Genesis::CreateEmptyFunction(Isolate* isolate) {
// Allocate the map for function instances. Maps are allocated first and their
// prototypes patched later, once empty function is created.
// Functions with this map will not have a 'prototype' property, and
// can not be used as constructors.
Handle<Map> function_without_prototype_map =
factory()->CreateSloppyFunctionMap(FUNCTION_WITHOUT_PROTOTYPE);
native_context()->set_sloppy_function_without_prototype_map(
*function_without_prototype_map);
// Allocate the function map. This map is temporary, used only for processing
// of builtins.
// Later the map is replaced with writable prototype map, allocated below.
Handle<Map> function_map =
factory()->CreateSloppyFunctionMap(FUNCTION_WITH_READONLY_PROTOTYPE);
native_context()->set_sloppy_function_map(*function_map);
native_context()->set_sloppy_function_with_readonly_prototype_map(
*function_map);
// The final map for functions. Writeable prototype.
// This map is installed in MakeFunctionInstancePrototypeWritable.
sloppy_function_map_writable_prototype_ =
factory()->CreateSloppyFunctionMap(FUNCTION_WITH_WRITEABLE_PROTOTYPE);
Factory* factory = isolate->factory();
Handle<String> object_name = factory->Object_string();
Handle<JSObject> object_function_prototype;
{ // --- O b j e c t ---
Handle<JSFunction> object_fun = factory->NewFunction(object_name);
int unused = JSObject::kInitialGlobalObjectUnusedPropertiesCount;
int instance_size = JSObject::kHeaderSize + kPointerSize * unused;
Handle<Map> object_function_map =
factory->NewMap(JS_OBJECT_TYPE, instance_size);
object_function_map->SetInObjectProperties(unused);
JSFunction::SetInitialMap(object_fun, object_function_map,
isolate->factory()->null_value());
object_function_map->set_unused_property_fields(unused);
native_context()->set_object_function(*object_fun);
// Allocate a new prototype for the object function.
object_function_prototype =
factory->NewJSObject(isolate->object_function(), TENURED);
Handle<Map> map = Map::Copy(handle(object_function_prototype->map()),
"EmptyObjectPrototype");
map->set_is_prototype_map(true);
// Ban re-setting Object.prototype.__proto__ to prevent Proxy security bug
map->set_immutable_proto(true);
object_function_prototype->set_map(*map);
native_context()->set_initial_object_prototype(*object_function_prototype);
// For bootstrapping set the array prototype to be the same as the object
// prototype, otherwise the missing initial_array_prototype will cause
// assertions during startup.
native_context()->set_initial_array_prototype(*object_function_prototype);
Accessors::FunctionSetPrototype(object_fun, object_function_prototype)
.Assert();
}
// Allocate the empty function as the prototype for function - ES6 19.2.3
Handle<Code> code(isolate->builtins()->EmptyFunction());
Handle<JSFunction> empty_function =
factory->NewFunctionWithoutPrototype(factory->empty_string(), code);
// Allocate the function map first and then patch the prototype later
Handle<Map> empty_function_map =
factory->CreateSloppyFunctionMap(FUNCTION_WITHOUT_PROTOTYPE);
DCHECK(!empty_function_map->is_dictionary_map());
Map::SetPrototype(empty_function_map, object_function_prototype);
empty_function_map->set_is_prototype_map(true);
empty_function->set_map(*empty_function_map);
// --- E m p t y ---
Handle<String> source = factory->NewStringFromStaticChars("() {}");
Handle<Script> script = factory->NewScript(source);
script->set_type(Script::TYPE_NATIVE);
empty_function->shared()->set_start_position(0);
empty_function->shared()->set_end_position(source->length());
empty_function->shared()->DontAdaptArguments();
SharedFunctionInfo::SetScript(handle(empty_function->shared()), script);
// Set prototypes for the function maps.
Handle<Map> sloppy_function_map(native_context()->sloppy_function_map(),
isolate);
Handle<Map> sloppy_function_without_prototype_map(
native_context()->sloppy_function_without_prototype_map(), isolate);
Map::SetPrototype(sloppy_function_map, empty_function);
Map::SetPrototype(sloppy_function_without_prototype_map, empty_function);
Map::SetPrototype(sloppy_function_map_writable_prototype_, empty_function);
return empty_function;
}
// Creates the %ThrowTypeError% function.
Handle<JSFunction> Genesis::GetThrowTypeErrorIntrinsic(
Builtins::Name builtin_name) {
Handle<String> name =
factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("ThrowTypeError"));
Handle<Code> code(isolate()->builtins()->builtin(builtin_name));
Handle<JSFunction> function =
factory()->NewFunctionWithoutPrototype(name, code, true);
function->shared()->DontAdaptArguments();
// %ThrowTypeError% must not have a name property.
if (JSReceiver::DeleteProperty(function, factory()->name_string())
.IsNothing()) {
DCHECK(false);
}
// length needs to be non configurable.
Handle<Object> value(Smi::FromInt(function->shared()->length()), isolate());
JSObject::SetOwnPropertyIgnoreAttributes(
function, factory()->length_string(), value,
static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY))
.Assert();
if (JSObject::PreventExtensions(function, Object::THROW_ON_ERROR)
.IsNothing()) {
DCHECK(false);
}
return function;
}
// ECMAScript 5th Edition, 13.2.3
Handle<JSFunction> Genesis::GetRestrictedFunctionPropertiesThrower() {
if (restricted_function_properties_thrower_.is_null()) {
restricted_function_properties_thrower_ = GetThrowTypeErrorIntrinsic(
Builtins::kRestrictedFunctionPropertiesThrower);
}
return restricted_function_properties_thrower_;
}
Handle<JSFunction> Genesis::GetStrictArgumentsPoisonFunction() {
if (strict_poison_function_.is_null()) {
strict_poison_function_ = GetThrowTypeErrorIntrinsic(
Builtins::kRestrictedStrictArgumentsPropertiesThrower);
}
return strict_poison_function_;
}
void Genesis::CreateStrictModeFunctionMaps(Handle<JSFunction> empty) {
// Allocate map for the prototype-less strict mode instances.
Handle<Map> strict_function_without_prototype_map =
factory()->CreateStrictFunctionMap(FUNCTION_WITHOUT_PROTOTYPE, empty);
native_context()->set_strict_function_without_prototype_map(
*strict_function_without_prototype_map);
// Allocate map for the strict mode functions. This map is temporary, used
// only for processing of builtins.
// Later the map is replaced with writable prototype map, allocated below.
Handle<Map> strict_function_map = factory()->CreateStrictFunctionMap(
FUNCTION_WITH_READONLY_PROTOTYPE, empty);
native_context()->set_strict_function_map(*strict_function_map);
// The final map for the strict mode functions. Writeable prototype.
// This map is installed in MakeFunctionInstancePrototypeWritable.
strict_function_map_writable_prototype_ = factory()->CreateStrictFunctionMap(
FUNCTION_WITH_WRITEABLE_PROTOTYPE, empty);
// Now that the strict mode function map is available, set up the
// restricted "arguments" and "caller" getters.
AddRestrictedFunctionProperties(empty);
}
void Genesis::CreateIteratorMaps(Handle<JSFunction> empty) {
// Create iterator-related meta-objects.
Handle<JSObject> iterator_prototype =
factory()->NewJSObject(isolate()->object_function(), TENURED);
Handle<JSFunction> iterator_prototype_iterator = SimpleCreateFunction(
isolate(), factory()->NewStringFromAsciiChecked("[Symbol.iterator]"),
Builtins::kIteratorPrototypeIterator, 0, true);
iterator_prototype_iterator->shared()->set_native(true);
JSObject::AddProperty(iterator_prototype, factory()->iterator_symbol(),
iterator_prototype_iterator, DONT_ENUM);
native_context()->set_initial_iterator_prototype(*iterator_prototype);
Handle<JSObject> generator_object_prototype =
factory()->NewJSObject(isolate()->object_function(), TENURED);
native_context()->set_initial_generator_prototype(
*generator_object_prototype);
JSObject::ForceSetPrototype(generator_object_prototype, iterator_prototype);
Handle<JSObject> generator_function_prototype =
factory()->NewJSObject(isolate()->object_function(), TENURED);
JSObject::ForceSetPrototype(generator_function_prototype, empty);
JSObject::AddProperty(
generator_function_prototype, factory()->to_string_tag_symbol(),
factory()->NewStringFromAsciiChecked("GeneratorFunction"),
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
JSObject::AddProperty(generator_function_prototype,
factory()->prototype_string(),
generator_object_prototype,
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
JSObject::AddProperty(generator_object_prototype,
factory()->constructor_string(),
generator_function_prototype,
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
JSObject::AddProperty(generator_object_prototype,
factory()->to_string_tag_symbol(),
factory()->NewStringFromAsciiChecked("Generator"),
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
SimpleInstallFunction(generator_object_prototype, "next",
Builtins::kGeneratorPrototypeNext, 1, true);
SimpleInstallFunction(generator_object_prototype, "return",
Builtins::kGeneratorPrototypeReturn, 1, true);
SimpleInstallFunction(generator_object_prototype, "throw",
Builtins::kGeneratorPrototypeThrow, 1, true);
// Internal version of generator_prototype_next, flagged as non-native.
Handle<JSFunction> generator_next_internal =
SimpleCreateFunction(isolate(), factory()->next_string(),
Builtins::kGeneratorPrototypeNext, 1, true);
native_context()->set_generator_next_internal(*generator_next_internal);
// Create maps for generator functions and their prototypes. Store those
// maps in the native context. The "prototype" property descriptor is
// writable, non-enumerable, and non-configurable (as per ES6 draft
// 04-14-15, section 25.2.4.3).
Handle<Map> strict_function_map(strict_function_map_writable_prototype_);
// Generator functions do not have "caller" or "arguments" accessors.
Handle<Map> sloppy_generator_function_map =
Map::Copy(strict_function_map, "SloppyGeneratorFunction");
sloppy_generator_function_map->set_is_constructor(false);
Map::SetPrototype(sloppy_generator_function_map,
generator_function_prototype);
native_context()->set_sloppy_generator_function_map(
*sloppy_generator_function_map);
Handle<Map> strict_generator_function_map =
Map::Copy(strict_function_map, "StrictGeneratorFunction");
strict_generator_function_map->set_is_constructor(false);
Map::SetPrototype(strict_generator_function_map,
generator_function_prototype);
native_context()->set_strict_generator_function_map(
*strict_generator_function_map);
Handle<JSFunction> object_function(native_context()->object_function());
Handle<Map> generator_object_prototype_map = Map::Create(isolate(), 0);
Map::SetPrototype(generator_object_prototype_map, generator_object_prototype);
native_context()->set_generator_object_prototype_map(
*generator_object_prototype_map);
}
void Genesis::CreateAsyncFunctionMaps(Handle<JSFunction> empty) {
// %AsyncFunctionPrototype% intrinsic
Handle<JSObject> async_function_prototype =
factory()->NewJSObject(isolate()->object_function(), TENURED);
JSObject::ForceSetPrototype(async_function_prototype, empty);
JSObject::AddProperty(async_function_prototype,
factory()->to_string_tag_symbol(),
factory()->NewStringFromAsciiChecked("AsyncFunction"),
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
Handle<Map> strict_function_map(
native_context()->strict_function_without_prototype_map());
Handle<Map> sloppy_async_function_map =
Map::Copy(strict_function_map, "SloppyAsyncFunction");
sloppy_async_function_map->set_is_constructor(false);
Map::SetPrototype(sloppy_async_function_map, async_function_prototype);
native_context()->set_sloppy_async_function_map(*sloppy_async_function_map);
Handle<Map> strict_async_function_map =
Map::Copy(strict_function_map, "StrictAsyncFunction");
strict_async_function_map->set_is_constructor(false);
Map::SetPrototype(strict_async_function_map, async_function_prototype);
native_context()->set_strict_async_function_map(*strict_async_function_map);
}
void Genesis::CreateJSProxyMaps() {
// Allocate the different maps for all Proxy types.
// Next to the default proxy, we need maps indicating callable and
// constructable proxies.
Handle<Map> proxy_function_map =
Map::Copy(isolate()->sloppy_function_without_prototype_map(), "Proxy");
proxy_function_map->set_is_constructor(true);
native_context()->set_proxy_function_map(*proxy_function_map);
Handle<Map> proxy_map =
factory()->NewMap(JS_PROXY_TYPE, JSProxy::kSize, FAST_ELEMENTS);
proxy_map->set_dictionary_map(true);
native_context()->set_proxy_map(*proxy_map);
Handle<Map> proxy_callable_map = Map::Copy(proxy_map, "callable Proxy");
proxy_callable_map->set_is_callable();
native_context()->set_proxy_callable_map(*proxy_callable_map);
proxy_callable_map->SetConstructor(native_context()->function_function());
Handle<Map> proxy_constructor_map =
Map::Copy(proxy_callable_map, "constructor Proxy");
proxy_constructor_map->set_is_constructor(true);
native_context()->set_proxy_constructor_map(*proxy_constructor_map);
}
static void ReplaceAccessors(Handle<Map> map,
Handle<String> name,
PropertyAttributes attributes,
Handle<AccessorPair> accessor_pair) {
DescriptorArray* descriptors = map->instance_descriptors();
int idx = descriptors->SearchWithCache(map->GetIsolate(), *name, *map);
AccessorConstantDescriptor descriptor(name, accessor_pair, attributes);
descriptors->Replace(idx, &descriptor);
}
void Genesis::AddRestrictedFunctionProperties(Handle<JSFunction> empty) {
PropertyAttributes rw_attribs = static_cast<PropertyAttributes>(DONT_ENUM);
Handle<JSFunction> thrower = GetRestrictedFunctionPropertiesThrower();
Handle<AccessorPair> accessors = factory()->NewAccessorPair();
accessors->set_getter(*thrower);
accessors->set_setter(*thrower);
Handle<Map> map(empty->map());
ReplaceAccessors(map, factory()->arguments_string(), rw_attribs, accessors);
ReplaceAccessors(map, factory()->caller_string(), rw_attribs, accessors);
}
static void AddToWeakNativeContextList(Context* context) {
DCHECK(context->IsNativeContext());
Isolate* isolate = context->GetIsolate();
Heap* heap = isolate->heap();
#ifdef DEBUG
{ // NOLINT
DCHECK(context->next_context_link()->IsUndefined(isolate));
// Check that context is not in the list yet.
for (Object* current = heap->native_contexts_list();
!current->IsUndefined(isolate);
current = Context::cast(current)->next_context_link()) {
DCHECK(current != context);
}
}
#endif
context->set(Context::NEXT_CONTEXT_LINK, heap->native_contexts_list(),
UPDATE_WEAK_WRITE_BARRIER);
heap->set_native_contexts_list(context);
}
void Genesis::CreateRoots() {
// Allocate the native context FixedArray first and then patch the
// closure and extension object later (we need the empty function
// and the global object, but in order to create those, we need the
// native context).
native_context_ = factory()->NewNativeContext();
AddToWeakNativeContextList(*native_context());
isolate()->set_context(*native_context());
// Allocate the message listeners object.
{
Handle<TemplateList> list = TemplateList::New(isolate(), 1);
native_context()->set_message_listeners(*list);
}
}
void Genesis::InstallGlobalThisBinding() {
Handle<ScriptContextTable> script_contexts(
native_context()->script_context_table());
Handle<ScopeInfo> scope_info = ScopeInfo::CreateGlobalThisBinding(isolate());
Handle<JSFunction> closure(native_context()->closure());
Handle<Context> context = factory()->NewScriptContext(closure, scope_info);
// Go ahead and hook it up while we're at it.
int slot = scope_info->ReceiverContextSlotIndex();
DCHECK_EQ(slot, Context::MIN_CONTEXT_SLOTS);
context->set(slot, native_context()->global_proxy());
Handle<ScriptContextTable> new_script_contexts =
ScriptContextTable::Extend(script_contexts, context);
native_context()->set_script_context_table(*new_script_contexts);
}
Handle<JSGlobalObject> Genesis::CreateNewGlobals(
v8::Local<v8::ObjectTemplate> global_proxy_template,
Handle<JSGlobalProxy> global_proxy) {
// The argument global_proxy_template aka data is an ObjectTemplateInfo.
// It has a constructor pointer that points at global_constructor which is a
// FunctionTemplateInfo.
// The global_proxy_constructor is used to (re)initialize the
// global_proxy. The global_proxy_constructor also has a prototype_template
// pointer that points at js_global_object_template which is an
// ObjectTemplateInfo.
// That in turn has a constructor pointer that points at
// js_global_object_constructor which is a FunctionTemplateInfo.
// js_global_object_constructor is used to make js_global_object_function
// js_global_object_function is used to make the new global_object.
//
// --- G l o b a l ---
// Step 1: Create a fresh JSGlobalObject.
Handle<JSFunction> js_global_object_function;
Handle<ObjectTemplateInfo> js_global_object_template;
if (!global_proxy_template.IsEmpty()) {
// Get prototype template of the global_proxy_template.
Handle<ObjectTemplateInfo> data =
v8::Utils::OpenHandle(*global_proxy_template);
Handle<FunctionTemplateInfo> global_constructor =
Handle<FunctionTemplateInfo>(
FunctionTemplateInfo::cast(data->constructor()));
Handle<Object> proto_template(global_constructor->prototype_template(),
isolate());
if (!proto_template->IsUndefined(isolate())) {
js_global_object_template =
Handle<ObjectTemplateInfo>::cast(proto_template);
}
}
if (js_global_object_template.is_null()) {
Handle<String> name = Handle<String>(heap()->empty_string());
Handle<Code> code = isolate()->builtins()->Illegal();
Handle<JSObject> prototype =
factory()->NewFunctionPrototype(isolate()->object_function());
js_global_object_function = factory()->NewFunction(
name, code, prototype, JS_GLOBAL_OBJECT_TYPE, JSGlobalObject::kSize);
#ifdef DEBUG
LookupIterator it(prototype, factory()->constructor_string(),
LookupIterator::OWN_SKIP_INTERCEPTOR);
Handle<Object> value = Object::GetProperty(&it).ToHandleChecked();
DCHECK(it.IsFound());
DCHECK_EQ(*isolate()->object_function(), *value);
#endif
} else {
Handle<FunctionTemplateInfo> js_global_object_constructor(
FunctionTemplateInfo::cast(js_global_object_template->constructor()));
js_global_object_function = ApiNatives::CreateApiFunction(
isolate(), js_global_object_constructor, factory()->the_hole_value(),
ApiNatives::GlobalObjectType);
}
js_global_object_function->initial_map()->set_is_prototype_map(true);
js_global_object_function->initial_map()->set_dictionary_map(true);
Handle<JSGlobalObject> global_object =
factory()->NewJSGlobalObject(js_global_object_function);
// Step 2: (re)initialize the global proxy object.
Handle<JSFunction> global_proxy_function;
if (global_proxy_template.IsEmpty()) {
Handle<String> name = Handle<String>(heap()->empty_string());
Handle<Code> code = isolate()->builtins()->Illegal();
global_proxy_function =
factory()->NewFunction(name, code, JS_GLOBAL_PROXY_TYPE,
JSGlobalProxy::SizeWithInternalFields(0));
} else {
Handle<ObjectTemplateInfo> data =
v8::Utils::OpenHandle(*global_proxy_template);
Handle<FunctionTemplateInfo> global_constructor(
FunctionTemplateInfo::cast(data->constructor()));
global_proxy_function = ApiNatives::CreateApiFunction(
isolate(), global_constructor, factory()->the_hole_value(),
ApiNatives::GlobalProxyType);
}
Handle<String> global_name = factory()->global_string();
global_proxy_function->shared()->set_instance_class_name(*global_name);
global_proxy_function->initial_map()->set_is_access_check_needed(true);
global_proxy_function->initial_map()->set_has_hidden_prototype(true);
// Set global_proxy.__proto__ to js_global after ConfigureGlobalObjects
// Return the global proxy.
factory()->ReinitializeJSGlobalProxy(global_proxy, global_proxy_function);
return global_object;
}
void Genesis::HookUpGlobalProxy(Handle<JSGlobalObject> global_object,
Handle<JSGlobalProxy> global_proxy) {
// Set the native context for the global object.
global_object->set_native_context(*native_context());
global_object->set_global_proxy(*global_proxy);
global_proxy->set_native_context(*native_context());
// If we deserialized the context, the global proxy is already
// correctly set up. Otherwise it's undefined.
DCHECK(native_context()
->get(Context::GLOBAL_PROXY_INDEX)
->IsUndefined(isolate()) ||
native_context()->global_proxy() == *global_proxy);
native_context()->set_global_proxy(*global_proxy);
}
void Genesis::HookUpGlobalObject(Handle<JSGlobalObject> global_object) {
Handle<JSGlobalObject> global_object_from_snapshot(
JSGlobalObject::cast(native_context()->extension()));
native_context()->set_extension(*global_object);
native_context()->set_security_token(*global_object);
TransferNamedProperties(global_object_from_snapshot, global_object);
TransferIndexedProperties(global_object_from_snapshot, global_object);
}
static void InstallWithIntrinsicDefaultProto(Isolate* isolate,
Handle<JSFunction> function,
int context_index) {
Handle<Smi> index(Smi::FromInt(context_index), isolate);
JSObject::AddProperty(
function, isolate->factory()->native_context_index_symbol(), index, NONE);
isolate->native_context()->set(context_index, *function);
}
static void InstallError(Isolate* isolate, Handle<JSObject> global,
Handle<String> name, int context_index) {
Factory* factory = isolate->factory();
Handle<JSFunction> error_fun =
InstallFunction(global, name, JS_ERROR_TYPE, JSObject::kHeaderSize,
isolate->initial_object_prototype(),
Builtins::kErrorConstructor, DONT_ENUM);
error_fun->shared()->set_instance_class_name(*factory->Error_string());
error_fun->shared()->DontAdaptArguments();
error_fun->shared()->set_construct_stub(
*isolate->builtins()->ErrorConstructor());
error_fun->shared()->set_length(1);
if (context_index == Context::ERROR_FUNCTION_INDEX) {
SimpleInstallFunction(error_fun, "captureStackTrace",
Builtins::kErrorCaptureStackTrace, 2, false);
}
InstallWithIntrinsicDefaultProto(isolate, error_fun, context_index);
{
Handle<JSObject> prototype =
factory->NewJSObject(isolate->object_function(), TENURED);
JSObject::AddProperty(prototype, factory->name_string(), name, DONT_ENUM);
JSObject::AddProperty(prototype, factory->message_string(),
factory->empty_string(), DONT_ENUM);
JSObject::AddProperty(prototype, factory->constructor_string(), error_fun,
DONT_ENUM);
if (context_index == Context::ERROR_FUNCTION_INDEX) {
Handle<JSFunction> to_string_fun =
SimpleInstallFunction(prototype, factory->toString_string(),
Builtins::kErrorPrototypeToString, 0, true);
isolate->native_context()->set_error_to_string(*to_string_fun);
} else {
DCHECK(isolate->native_context()->error_to_string()->IsJSFunction());
InstallFunction(prototype, isolate->error_to_string(),
factory->toString_string(), DONT_ENUM);
Handle<JSFunction> global_error = isolate->error_function();
CHECK(JSReceiver::SetPrototype(error_fun, global_error, false,
Object::THROW_ON_ERROR)
.FromMaybe(false));
CHECK(JSReceiver::SetPrototype(prototype,
handle(global_error->prototype(), isolate),
false, Object::THROW_ON_ERROR)
.FromMaybe(false));
}
Accessors::FunctionSetPrototype(error_fun, prototype).Assert();
}
Handle<Map> initial_map(error_fun->initial_map());
Map::EnsureDescriptorSlack(initial_map, 1);
PropertyAttributes attribs = DONT_ENUM;
Handle<AccessorInfo> error_stack =
Accessors::ErrorStackInfo(isolate, attribs);
{
AccessorConstantDescriptor d(Handle<Name>(Name::cast(error_stack->name())),
error_stack, attribs);
initial_map->AppendDescriptor(&d);
}
}
static void InstallMakeError(Isolate* isolate, Handle<Code> code,
int context_index) {
Handle<JSFunction> function =
isolate->factory()->NewFunction(isolate->factory()->empty_string(), code,
JS_OBJECT_TYPE, JSObject::kHeaderSize);
function->shared()->DontAdaptArguments();
isolate->native_context()->set(context_index, *function);
}
// This is only called if we are not using snapshots. The equivalent
// work in the snapshot case is done in HookUpGlobalObject.
void Genesis::InitializeGlobal(Handle<JSGlobalObject> global_object,
Handle<JSFunction> empty_function,
GlobalContextType context_type) {
// --- N a t i v e C o n t e x t ---
// Use the empty function as closure (no scope info).
native_context()->set_closure(*empty_function);
native_context()->set_previous(NULL);
// Set extension and global object.
native_context()->set_extension(*global_object);
// Security setup: Set the security token of the native context to the global
// object. This makes the security check between two different contexts fail
// by default even in case of global object reinitialization.
native_context()->set_security_token(*global_object);
Isolate* isolate = global_object->GetIsolate();
Factory* factory = isolate->factory();
Handle<ScriptContextTable> script_context_table =
factory->NewScriptContextTable();
native_context()->set_script_context_table(*script_context_table);
InstallGlobalThisBinding();
{ // --- O b j e c t ---
Handle<String> object_name = factory->Object_string();
Handle<JSFunction> object_function = isolate->object_function();
JSObject::AddProperty(global_object, object_name, object_function,
DONT_ENUM);
SimpleInstallFunction(object_function, factory->assign_string(),
Builtins::kObjectAssign, 2, false);
SimpleInstallFunction(object_function, factory->create_string(),
Builtins::kObjectCreate, 2, true);
SimpleInstallFunction(object_function, "getOwnPropertyDescriptor",
Builtins::kObjectGetOwnPropertyDescriptor, 2, false);
SimpleInstallFunction(object_function,
factory->getOwnPropertyDescriptors_string(),
Builtins::kObjectGetOwnPropertyDescriptors, 1, false);
SimpleInstallFunction(object_function, "getOwnPropertyNames",
Builtins::kObjectGetOwnPropertyNames, 1, false);
SimpleInstallFunction(object_function, "getOwnPropertySymbols",
Builtins::kObjectGetOwnPropertySymbols, 1, false);
SimpleInstallFunction(object_function, "is",
Builtins::kObjectIs, 2, true);
SimpleInstallFunction(object_function, "preventExtensions",
Builtins::kObjectPreventExtensions, 1, false);
SimpleInstallFunction(object_function, "seal",
Builtins::kObjectSeal, 1, false);
Handle<JSFunction> object_define_properties = SimpleInstallFunction(
object_function, "defineProperties",
Builtins::kObjectDefineProperties, 2, true);
native_context()->set_object_define_properties(*object_define_properties);
Handle<JSFunction> object_define_property = SimpleInstallFunction(
object_function, factory->defineProperty_string(),
Builtins::kObjectDefineProperty, 3, true);
native_context()->set_object_define_property(*object_define_property);
Handle<JSFunction> object_freeze = SimpleInstallFunction(
object_function, "freeze", Builtins::kObjectFreeze, 1, false);
native_context()->set_object_freeze(*object_freeze);
Handle<JSFunction> object_get_prototype_of = SimpleInstallFunction(
object_function, "getPrototypeOf", Builtins::kObjectGetPrototypeOf,
1, false);
native_context()->set_object_get_prototype_of(*object_get_prototype_of);
SimpleInstallFunction(object_function, "setPrototypeOf",
Builtins::kObjectSetPrototypeOf, 2, false);
Handle<JSFunction> object_is_extensible = SimpleInstallFunction(
object_function, "isExtensible", Builtins::kObjectIsExtensible,
1, false);
native_context()->set_object_is_extensible(*object_is_extensible);
Handle<JSFunction> object_is_frozen = SimpleInstallFunction(
object_function, "isFrozen", Builtins::kObjectIsFrozen, 1, false);
native_context()->set_object_is_frozen(*object_is_frozen);
Handle<JSFunction> object_is_sealed = SimpleInstallFunction(
object_function, "isSealed", Builtins::kObjectIsSealed, 1, false);
native_context()->set_object_is_sealed(*object_is_sealed);
Handle<JSFunction> object_keys = SimpleInstallFunction(
object_function, "keys", Builtins::kObjectKeys, 1, false);
native_context()->set_object_keys(*object_keys);
SimpleInstallFunction(object_function, factory->entries_string(),
Builtins::kObjectEntries, 1, false);
SimpleInstallFunction(object_function, factory->values_string(),
Builtins::kObjectValues, 1, false);
SimpleInstallFunction(isolate->initial_object_prototype(),
"__defineGetter__", Builtins::kObjectDefineGetter, 2,
true);
SimpleInstallFunction(isolate->initial_object_prototype(),
"__defineSetter__", Builtins::kObjectDefineSetter, 2,
true);
SimpleInstallFunction(isolate->initial_object_prototype(), "hasOwnProperty",
Builtins::kObjectHasOwnProperty, 1, true);
SimpleInstallFunction(isolate->initial_object_prototype(),
"__lookupGetter__", Builtins::kObjectLookupGetter, 1,
true);
SimpleInstallFunction(isolate->initial_object_prototype(),
"__lookupSetter__", Builtins::kObjectLookupSetter, 1,
true);
SimpleInstallFunction(
isolate->initial_object_prototype(), "propertyIsEnumerable",
Builtins::kObjectPrototypePropertyIsEnumerable, 1, false);
SimpleInstallGetterSetter(isolate->initial_object_prototype(),
factory->proto_string(),
Builtins::kObjectPrototypeGetProto,
Builtins::kObjectPrototypeSetProto, DONT_ENUM);
}
Handle<JSObject> global(native_context()->global_object());
{ // --- F u n c t i o n ---
Handle<JSFunction> prototype = empty_function;
Handle<JSFunction> function_fun =
InstallFunction(global, "Function", JS_FUNCTION_TYPE, JSFunction::kSize,
prototype, Builtins::kFunctionConstructor);
function_fun->set_prototype_or_initial_map(
*sloppy_function_map_writable_prototype_);
function_fun->shared()->DontAdaptArguments();
function_fun->shared()->SetConstructStub(
*isolate->builtins()->FunctionConstructor());
function_fun->shared()->set_length(1);
InstallWithIntrinsicDefaultProto(isolate, function_fun,
Context::FUNCTION_FUNCTION_INDEX);
// Setup the methods on the %FunctionPrototype%.
SimpleInstallFunction(prototype, factory->apply_string(),
Builtins::kFunctionPrototypeApply, 2, false);
if (FLAG_minimal) {
SimpleInstallFunction(prototype, factory->bind_string(),
Builtins::kFunctionPrototypeBind, 1, false);
} else {
FastFunctionBindStub bind_stub(isolate);
Handle<JSFunction> bind_function = factory->NewFunctionWithoutPrototype(
factory->bind_string(), bind_stub.GetCode(), false);
bind_function->shared()->DontAdaptArguments();
bind_function->shared()->set_length(1);
InstallFunction(prototype, bind_function, factory->bind_string(),
DONT_ENUM);
}
SimpleInstallFunction(prototype, factory->call_string(),
Builtins::kFunctionPrototypeCall, 1, false);
SimpleInstallFunction(prototype, factory->toString_string(),
Builtins::kFunctionPrototypeToString, 0, false);
// Install the @@hasInstance function.
Handle<JSFunction> has_instance = InstallFunction(
prototype, factory->has_instance_symbol(), JS_OBJECT_TYPE,
JSObject::kHeaderSize, MaybeHandle<JSObject>(),
Builtins::kFunctionPrototypeHasInstance,
static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY));
has_instance->shared()->set_builtin_function_id(kFunctionHasInstance);
native_context()->set_function_has_instance(*has_instance);
// Set the expected parameters for @@hasInstance to 1; required by builtin.
has_instance->shared()->set_internal_formal_parameter_count(1);
// Set the length for the function to satisfy ECMA-262.
has_instance->shared()->set_length(1);
// Install the "constructor" property on the %FunctionPrototype%.
JSObject::AddProperty(prototype, factory->constructor_string(),
function_fun, DONT_ENUM);
sloppy_function_map_writable_prototype_->SetConstructor(*function_fun);
strict_function_map_writable_prototype_->SetConstructor(*function_fun);
}
{ // --- A r r a y ---
Handle<JSFunction> array_function =
InstallFunction(global, "Array", JS_ARRAY_TYPE, JSArray::kSize,
isolate->initial_object_prototype(),
Builtins::kArrayCode);
array_function->shared()->DontAdaptArguments();
array_function->shared()->set_builtin_function_id(kArrayCode);
// This seems a bit hackish, but we need to make sure Array.length
// is 1.
array_function->shared()->set_length(1);
Handle<Map> initial_map(array_function->initial_map());
// This assert protects an optimization in
// HGraphBuilder::JSArrayBuilder::EmitMapCode()
DCHECK(initial_map->elements_kind() == GetInitialFastElementsKind());
Map::EnsureDescriptorSlack(initial_map, 1);
PropertyAttributes attribs = static_cast<PropertyAttributes>(
DONT_ENUM | DONT_DELETE);
Handle<AccessorInfo> array_length =
Accessors::ArrayLengthInfo(isolate, attribs);
{ // Add length.
AccessorConstantDescriptor d(
Handle<Name>(Name::cast(array_length->name())), array_length,
attribs);
initial_map->AppendDescriptor(&d);
}
InstallWithIntrinsicDefaultProto(isolate, array_function,
Context::ARRAY_FUNCTION_INDEX);
// Cache the array maps, needed by ArrayConstructorStub
CacheInitialJSArrayMaps(native_context(), initial_map);
ArrayConstructorStub array_constructor_stub(isolate);
Handle<Code> code = array_constructor_stub.GetCode();
array_function->shared()->SetConstructStub(*code);
Handle<JSFunction> is_arraylike = SimpleInstallFunction(
array_function, isolate->factory()->InternalizeUtf8String("isArray"),
Builtins::kArrayIsArray, 1, true);
native_context()->set_is_arraylike(*is_arraylike);
}
{ // --- A r r a y I t e r a t o r ---
Handle<JSObject> iterator_prototype(
native_context()->initial_iterator_prototype());
Handle<JSObject> array_iterator_prototype =
factory->NewJSObject(isolate->object_function(), TENURED);
JSObject::ForceSetPrototype(array_iterator_prototype, iterator_prototype);
JSObject::AddProperty(
array_iterator_prototype, factory->to_string_tag_symbol(),
factory->ArrayIterator_string(),
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
Handle<JSFunction> next = InstallFunction(
array_iterator_prototype, "next", JS_OBJECT_TYPE, JSObject::kHeaderSize,
MaybeHandle<JSObject>(), Builtins::kArrayIteratorPrototypeNext);
next->shared()->set_builtin_function_id(kArrayIteratorNext);
// Set the expected parameters for %ArrayIteratorPrototype%.next to 0 (not
// including the receiver), as required by the builtin.
next->shared()->set_internal_formal_parameter_count(0);
// Set the length for the function to satisfy ECMA-262.
next->shared()->set_length(0);
Handle<JSFunction> array_iterator_function = CreateFunction(
isolate, factory->ArrayIterator_string(),
JS_FAST_ARRAY_VALUE_ITERATOR_TYPE, JSArrayIterator::kSize,
array_iterator_prototype, Builtins::kIllegal);
array_iterator_function->shared()->set_instance_class_name(
isolate->heap()->ArrayIterator_string());
native_context()->set_initial_array_iterator_prototype(
*array_iterator_prototype);
native_context()->set_initial_array_iterator_prototype_map(
array_iterator_prototype->map());
Handle<Map> initial_map(array_iterator_function->initial_map(), isolate);
#define ARRAY_ITERATOR_LIST(V) \
V(TYPED_ARRAY, KEY, typed_array, key) \
V(FAST_ARRAY, KEY, fast_array, key) \
V(GENERIC_ARRAY, KEY, array, key) \
V(UINT8_ARRAY, KEY_VALUE, uint8_array, key_value) \
V(INT8_ARRAY, KEY_VALUE, int8_array, key_value) \
V(UINT16_ARRAY, KEY_VALUE, uint16_array, key_value) \
V(INT16_ARRAY, KEY_VALUE, int16_array, key_value) \
V(UINT32_ARRAY, KEY_VALUE, uint32_array, key_value) \
V(INT32_ARRAY, KEY_VALUE, int32_array, key_value) \
V(FLOAT32_ARRAY, KEY_VALUE, float32_array, key_value) \
V(FLOAT64_ARRAY, KEY_VALUE, float64_array, key_value) \
V(UINT8_CLAMPED_ARRAY, KEY_VALUE, uint8_clamped_array, key_value) \
V(FAST_SMI_ARRAY, KEY_VALUE, fast_smi_array, key_value) \
V(FAST_HOLEY_SMI_ARRAY, KEY_VALUE, fast_holey_smi_array, key_value) \
V(FAST_ARRAY, KEY_VALUE, fast_array, key_value) \
V(FAST_HOLEY_ARRAY, KEY_VALUE, fast_holey_array, key_value) \
V(FAST_DOUBLE_ARRAY, KEY_VALUE, fast_double_array, key_value) \
V(FAST_HOLEY_DOUBLE_ARRAY, KEY_VALUE, fast_holey_double_array, key_value) \
V(GENERIC_ARRAY, KEY_VALUE, array, key_value) \
V(UINT8_ARRAY, VALUE, uint8_array, value) \
V(INT8_ARRAY, VALUE, int8_array, value) \
V(UINT16_ARRAY, VALUE, uint16_array, value) \
V(INT16_ARRAY, VALUE, int16_array, value) \
V(UINT32_ARRAY, VALUE, uint32_array, value) \
V(INT32_ARRAY, VALUE, int32_array, value) \
V(FLOAT32_ARRAY, VALUE, float32_array, value) \
V(FLOAT64_ARRAY, VALUE, float64_array, value) \
V(UINT8_CLAMPED_ARRAY, VALUE, uint8_clamped_array, value) \
V(FAST_SMI_ARRAY, VALUE, fast_smi_array, value) \
V(FAST_HOLEY_SMI_ARRAY, VALUE, fast_holey_smi_array, value) \
V(FAST_ARRAY, VALUE, fast_array, value) \
V(FAST_HOLEY_ARRAY, VALUE, fast_holey_array, value) \
V(FAST_DOUBLE_ARRAY, VALUE, fast_double_array, value) \
V(FAST_HOLEY_DOUBLE_ARRAY, VALUE, fast_holey_double_array, value) \
V(GENERIC_ARRAY, VALUE, array, value)
#define CREATE_ARRAY_ITERATOR_MAP(PREFIX, SUFFIX, prefix, suffix) \
do { \
const InstanceType type = JS_##PREFIX##_##SUFFIX##_ITERATOR_TYPE; \
Handle<Map> map = \
Map::Copy(initial_map, "JS_" #PREFIX "_" #SUFFIX "_ITERATOR_TYPE"); \
map->set_instance_type(type); \
native_context()->set_##prefix##_##suffix##_iterator_map(*map); \
} while (0);
ARRAY_ITERATOR_LIST(CREATE_ARRAY_ITERATOR_MAP)
#undef CREATE_ARRAY_ITERATOR_MAP
#undef ARRAY_ITERATOR_LIST
}
{ // --- N u m b e r ---
Handle<JSFunction> number_fun = InstallFunction(
global, "Number", JS_VALUE_TYPE, JSValue::kSize,
isolate->initial_object_prototype(), Builtins::kNumberConstructor);
number_fun->shared()->DontAdaptArguments();
number_fun->shared()->SetConstructStub(
*isolate->builtins()->NumberConstructor_ConstructStub());
number_fun->shared()->set_length(1);
InstallWithIntrinsicDefaultProto(isolate, number_fun,
Context::NUMBER_FUNCTION_INDEX);
// Create the %NumberPrototype%
Handle<JSValue> prototype =
Handle<JSValue>::cast(factory->NewJSObject(number_fun, TENURED));
prototype->set_value(Smi::kZero);
Accessors::FunctionSetPrototype(number_fun, prototype).Assert();
// Install the "constructor" property on the {prototype}.
JSObject::AddProperty(prototype, factory->constructor_string(), number_fun,
DONT_ENUM);
// Install the Number.prototype methods.
SimpleInstallFunction(prototype, "toExponential",
Builtins::kNumberPrototypeToExponential, 1, false);
SimpleInstallFunction(prototype, "toFixed",
Builtins::kNumberPrototypeToFixed, 1, false);
SimpleInstallFunction(prototype, "toPrecision",
Builtins::kNumberPrototypeToPrecision, 1, false);
SimpleInstallFunction(prototype, "toString",
Builtins::kNumberPrototypeToString, 1, false);
SimpleInstallFunction(prototype, "valueOf",
Builtins::kNumberPrototypeValueOf, 0, true);
// Install i18n fallback functions.
SimpleInstallFunction(prototype, "toLocaleString",
Builtins::kNumberPrototypeToLocaleString, 0, false);
// Install the Number functions.
SimpleInstallFunction(number_fun, "isFinite", Builtins::kNumberIsFinite, 1,
true);
SimpleInstallFunction(number_fun, "isInteger", Builtins::kNumberIsInteger,
1, true);
SimpleInstallFunction(number_fun, "isNaN", Builtins::kNumberIsNaN, 1, true);
SimpleInstallFunction(number_fun, "isSafeInteger",
Builtins::kNumberIsSafeInteger, 1, true);
// Install Number.parseFloat and Global.parseFloat.
Handle<JSFunction> parse_float_fun = SimpleInstallFunction(
number_fun, "parseFloat", Builtins::kNumberParseFloat, 1, true);
JSObject::AddProperty(global_object,
factory->NewStringFromAsciiChecked("parseFloat"),
parse_float_fun, DONT_ENUM);
// Install Number.parseInt and Global.parseInt.
Handle<JSFunction> parse_int_fun = SimpleInstallFunction(
number_fun, "parseInt", Builtins::kNumberParseInt, 2, true);
JSObject::AddProperty(global_object,
factory->NewStringFromAsciiChecked("parseInt"),
parse_int_fun, DONT_ENUM);
}
{ // --- B o o l e a n ---
Handle<JSFunction> boolean_fun =
InstallFunction(global, "Boolean", JS_VALUE_TYPE, JSValue::kSize,
isolate->initial_object_prototype(),
Builtins::kBooleanConstructor);
boolean_fun->shared()->DontAdaptArguments();
boolean_fun->shared()->SetConstructStub(
*isolate->builtins()->BooleanConstructor_ConstructStub());
boolean_fun->shared()->set_length(1);
InstallWithIntrinsicDefaultProto(isolate, boolean_fun,
Context::BOOLEAN_FUNCTION_INDEX);
// Create the %BooleanPrototype%
Handle<JSValue> prototype =
Handle<JSValue>::cast(factory->NewJSObject(boolean_fun, TENURED));
prototype->set_value(isolate->heap()->false_value());
Accessors::FunctionSetPrototype(boolean_fun, prototype).Assert();
// Install the "constructor" property on the {prototype}.
JSObject::AddProperty(prototype, factory->constructor_string(), boolean_fun,
DONT_ENUM);
// Install the Boolean.prototype methods.
SimpleInstallFunction(prototype, "toString",
Builtins::kBooleanPrototypeToString, 0, true);
SimpleInstallFunction(prototype, "valueOf",
Builtins::kBooleanPrototypeValueOf, 0, true);
}
{ // --- S t r i n g ---
Handle<JSFunction> string_fun = InstallFunction(
global, "String", JS_VALUE_TYPE, JSValue::kSize,
isolate->initial_object_prototype(), Builtins::kStringConstructor);
string_fun->shared()->SetConstructStub(
*isolate->builtins()->StringConstructor_ConstructStub());
string_fun->shared()->DontAdaptArguments();
string_fun->shared()->set_length(1);
InstallWithIntrinsicDefaultProto(isolate, string_fun,
Context::STRING_FUNCTION_INDEX);
Handle<Map> string_map =
Handle<Map>(native_context()->string_function()->initial_map());
string_map->set_elements_kind(FAST_STRING_WRAPPER_ELEMENTS);
Map::EnsureDescriptorSlack(string_map, 1);
PropertyAttributes attribs = static_cast<PropertyAttributes>(
DONT_ENUM | DONT_DELETE | READ_ONLY);
Handle<AccessorInfo> string_length(
Accessors::StringLengthInfo(isolate, attribs));
{ // Add length.
AccessorConstantDescriptor d(factory->length_string(), string_length,
attribs);
string_map->AppendDescriptor(&d);
}
// Install the String.fromCharCode function.
SimpleInstallFunction(string_fun, "fromCharCode",
Builtins::kStringFromCharCode, 1, false);
// Install the String.fromCodePoint function.
SimpleInstallFunction(string_fun, "fromCodePoint",
Builtins::kStringFromCodePoint, 1, false);
// Create the %StringPrototype%
Handle<JSValue> prototype =
Handle<JSValue>::cast(factory->NewJSObject(string_fun, TENURED));
prototype->set_value(isolate->heap()->empty_string());
Accessors::FunctionSetPrototype(string_fun, prototype).Assert();
// Install the "constructor" property on the {prototype}.
JSObject::AddProperty(prototype, factory->constructor_string(), string_fun,
DONT_ENUM);
// Install the String.prototype methods.
SimpleInstallFunction(prototype, "charAt", Builtins::kStringPrototypeCharAt,
1, true);
SimpleInstallFunction(prototype, "charCodeAt",
Builtins::kStringPrototypeCharCodeAt, 1, true);
SimpleInstallFunction(prototype, "endsWith",
Builtins::kStringPrototypeEndsWith, 1, false);
SimpleInstallFunction(prototype, "includes",
Builtins::kStringPrototypeIncludes, 1, false);
SimpleInstallFunction(prototype, "indexOf",
Builtins::kStringPrototypeIndexOf, 1, false);
SimpleInstallFunction(prototype, "lastIndexOf",
Builtins::kStringPrototypeLastIndexOf, 1, false);
SimpleInstallFunction(prototype, "localeCompare",
Builtins::kStringPrototypeLocaleCompare, 1, true);
SimpleInstallFunction(prototype, "normalize",
Builtins::kStringPrototypeNormalize, 0, false);
SimpleInstallFunction(prototype, "substr", Builtins::kStringPrototypeSubstr,
2, true);
SimpleInstallFunction(prototype, "substring",
Builtins::kStringPrototypeSubstring, 2, true);
SimpleInstallFunction(prototype, "startsWith",
Builtins::kStringPrototypeStartsWith, 1, false);
SimpleInstallFunction(prototype, "toString",
Builtins::kStringPrototypeToString, 0, true);
SimpleInstallFunction(prototype, "trim", Builtins::kStringPrototypeTrim, 0,
false);
SimpleInstallFunction(prototype, "trimLeft",
Builtins::kStringPrototypeTrimLeft, 0, false);
SimpleInstallFunction(prototype, "trimRight",
Builtins::kStringPrototypeTrimRight, 0, false);
SimpleInstallFunction(prototype, "valueOf",
Builtins::kStringPrototypeValueOf, 0, true);
Handle<JSFunction> iterator = SimpleCreateFunction(
isolate, factory->NewStringFromAsciiChecked("[Symbol.iterator]"),
Builtins::kStringPrototypeIterator, 0, true);
iterator->shared()->set_native(true);
iterator->shared()->set_builtin_function_id(kStringIterator);
JSObject::AddProperty(prototype, factory->iterator_symbol(), iterator,
static_cast<PropertyAttributes>(DONT_ENUM));
}
{ // --- S t r i n g I t e r a t o r ---
Handle<JSObject> iterator_prototype(
native_context()->initial_iterator_prototype());
Handle<JSObject> string_iterator_prototype =
factory->NewJSObject(isolate->object_function(), TENURED);
JSObject::ForceSetPrototype(string_iterator_prototype, iterator_prototype);
JSObject::AddProperty(
string_iterator_prototype, factory->to_string_tag_symbol(),
factory->NewStringFromAsciiChecked("String Iterator"),
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
Handle<JSFunction> next =
InstallFunction(string_iterator_prototype, "next", JS_OBJECT_TYPE,
JSObject::kHeaderSize, MaybeHandle<JSObject>(),
Builtins::kStringIteratorPrototypeNext);
next->shared()->set_builtin_function_id(kStringIteratorNext);
// Set the expected parameters for %StringIteratorPrototype%.next to 0 (not
// including the receiver), as required by the builtin.
next->shared()->set_internal_formal_parameter_count(0);
// Set the length for the function to satisfy ECMA-262.
next->shared()->set_length(0);
Handle<JSFunction> string_iterator_function = CreateFunction(
isolate, factory->NewStringFromAsciiChecked("StringIterator"),
JS_STRING_ITERATOR_TYPE, JSStringIterator::kSize,
string_iterator_prototype, Builtins::kIllegal);
native_context()->set_string_iterator_map(
string_iterator_function->initial_map());
}
{
// --- S y m b o l ---
Handle<JSObject> prototype =
factory->NewJSObject(isolate->object_function(), TENURED);
Handle<JSFunction> symbol_fun =
InstallFunction(global, "Symbol", JS_VALUE_TYPE, JSValue::kSize,
prototype, Builtins::kSymbolConstructor);
symbol_fun->shared()->SetConstructStub(
*isolate->builtins()->SymbolConstructor_ConstructStub());
symbol_fun->shared()->set_length(0);
symbol_fun->shared()->DontAdaptArguments();
native_context()->set_symbol_function(*symbol_fun);
// Install the @@toStringTag property on the {prototype}.
JSObject::AddProperty(
prototype, factory->to_string_tag_symbol(),
factory->NewStringFromAsciiChecked("Symbol"),
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
// Install the "constructor" property on the {prototype}.
JSObject::AddProperty(prototype, factory->constructor_string(), symbol_fun,
DONT_ENUM);
// Install the Symbol.prototype methods.
SimpleInstallFunction(prototype, "toString",
Builtins::kSymbolPrototypeToString, 0, true);
SimpleInstallFunction(prototype, "valueOf",
Builtins::kSymbolPrototypeValueOf, 0, true);
// Install the @@toPrimitive function.
Handle<JSFunction> to_primitive = InstallFunction(
prototype, factory->to_primitive_symbol(), JS_OBJECT_TYPE,
JSObject::kHeaderSize, MaybeHandle<JSObject>(),
Builtins::kSymbolPrototypeToPrimitive,
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
// Set the expected parameters for @@toPrimitive to 1; required by builtin.
to_primitive->shared()->set_internal_formal_parameter_count(1);
// Set the length for the function to satisfy ECMA-262.
to_primitive->shared()->set_length(1);
}
{ // --- D a t e ---
// Builtin functions for Date.prototype.
Handle<JSObject> prototype =
factory->NewJSObject(isolate->object_function(), TENURED);
Handle<JSFunction> date_fun =
InstallFunction(global, "Date", JS_DATE_TYPE, JSDate::kSize, prototype,
Builtins::kDateConstructor);
InstallWithIntrinsicDefaultProto(isolate, date_fun,
Context::DATE_FUNCTION_INDEX);
date_fun->shared()->SetConstructStub(
*isolate->builtins()->DateConstructor_ConstructStub());
date_fun->shared()->set_length(7);
date_fun->shared()->DontAdaptArguments();
// Install the Date.now, Date.parse and Date.UTC functions.
SimpleInstallFunction(date_fun, "now", Builtins::kDateNow, 0, false);
SimpleInstallFunction(date_fun, "parse", Builtins::kDateParse, 1, false);
SimpleInstallFunction(date_fun, "UTC", Builtins::kDateUTC, 7, false);
// Install the "constructor" property on the {prototype}.
JSObject::AddProperty(prototype, factory->constructor_string(), date_fun,
DONT_ENUM);
// Install the Date.prototype methods.
SimpleInstallFunction(prototype, "toString",
Builtins::kDatePrototypeToString, 0, false);
SimpleInstallFunction(prototype, "toDateString",
Builtins::kDatePrototypeToDateString, 0, false);
SimpleInstallFunction(prototype, "toTimeString",
Builtins::kDatePrototypeToTimeString, 0, false);
SimpleInstallFunction(prototype, "toISOString",
Builtins::kDatePrototypeToISOString, 0, false);
Handle<JSFunction> to_utc_string =
SimpleInstallFunction(prototype, "toUTCString",
Builtins::kDatePrototypeToUTCString, 0, false);
InstallFunction(prototype, to_utc_string,
factory->InternalizeUtf8String("toGMTString"), DONT_ENUM);
SimpleInstallFunction(prototype, "getDate", Builtins::kDatePrototypeGetDate,
0, true);
SimpleInstallFunction(prototype, "setDate", Builtins::kDatePrototypeSetDate,
1, false);
SimpleInstallFunction(prototype, "getDay", Builtins::kDatePrototypeGetDay,
0, true);
SimpleInstallFunction(prototype, "getFullYear",
Builtins::kDatePrototypeGetFullYear, 0, true);
SimpleInstallFunction(prototype, "setFullYear",
Builtins::kDatePrototypeSetFullYear, 3, false);
SimpleInstallFunction(prototype, "getHours",
Builtins::kDatePrototypeGetHours, 0, true);
SimpleInstallFunction(prototype, "setHours",
Builtins::kDatePrototypeSetHours, 4, false);
SimpleInstallFunction(prototype, "getMilliseconds",
Builtins::kDatePrototypeGetMilliseconds, 0, true);
SimpleInstallFunction(prototype, "setMilliseconds",
Builtins::kDatePrototypeSetMilliseconds, 1, false);
SimpleInstallFunction(prototype, "getMinutes",
Builtins::kDatePrototypeGetMinutes, 0, true);
SimpleInstallFunction(prototype, "setMinutes",
Builtins::kDatePrototypeSetMinutes, 3, false);
SimpleInstallFunction(prototype, "getMonth",
Builtins::kDatePrototypeGetMonth, 0, true);
SimpleInstallFunction(prototype, "setMonth",
Builtins::kDatePrototypeSetMonth, 2, false);
SimpleInstallFunction(prototype, "getSeconds",
Builtins::kDatePrototypeGetSeconds, 0, true);
SimpleInstallFunction(prototype, "setSeconds",
Builtins::kDatePrototypeSetSeconds, 2, false);
SimpleInstallFunction(prototype, "getTime", Builtins::kDatePrototypeGetTime,
0, true);
SimpleInstallFunction(prototype, "setTime", Builtins::kDatePrototypeSetTime,
1, false);
SimpleInstallFunction(prototype, "getTimezoneOffset",
Builtins::kDatePrototypeGetTimezoneOffset, 0, true);
SimpleInstallFunction(prototype, "getUTCDate",
Builtins::kDatePrototypeGetUTCDate, 0, true);
SimpleInstallFunction(prototype, "setUTCDate",
Builtins::kDatePrototypeSetUTCDate, 1, false);
SimpleInstallFunction(prototype, "getUTCDay",
Builtins::kDatePrototypeGetUTCDay, 0, true);
SimpleInstallFunction(prototype, "getUTCFullYear",
Builtins::kDatePrototypeGetUTCFullYear, 0, true);
SimpleInstallFunction(prototype, "setUTCFullYear",
Builtins::kDatePrototypeSetUTCFullYear, 3, false);
SimpleInstallFunction(prototype, "getUTCHours",
Builtins::kDatePrototypeGetUTCHours, 0, true);
SimpleInstallFunction(prototype, "setUTCHours",
Builtins::kDatePrototypeSetUTCHours, 4, false);
SimpleInstallFunction(prototype, "getUTCMilliseconds",
Builtins::kDatePrototypeGetUTCMilliseconds, 0, true);
SimpleInstallFunction(prototype, "setUTCMilliseconds",
Builtins::kDatePrototypeSetUTCMilliseconds, 1, false);
SimpleInstallFunction(prototype, "getUTCMinutes",
Builtins::kDatePrototypeGetUTCMinutes, 0, true);
SimpleInstallFunction(prototype, "setUTCMinutes",
Builtins::kDatePrototypeSetUTCMinutes, 3, false);
SimpleInstallFunction(prototype, "getUTCMonth",
Builtins::kDatePrototypeGetUTCMonth, 0, true);
SimpleInstallFunction(prototype, "setUTCMonth",
Builtins::kDatePrototypeSetUTCMonth, 2, false);
SimpleInstallFunction(prototype, "getUTCSeconds",
Builtins::kDatePrototypeGetUTCSeconds, 0, true);
SimpleInstallFunction(prototype, "setUTCSeconds",
Builtins::kDatePrototypeSetUTCSeconds, 2, false);
SimpleInstallFunction(prototype, "valueOf", Builtins::kDatePrototypeValueOf,
0, false);
SimpleInstallFunction(prototype, "getYear", Builtins::kDatePrototypeGetYear,
0, true);
SimpleInstallFunction(prototype, "setYear", Builtins::kDatePrototypeSetYear,
1, false);
SimpleInstallFunction(prototype, "toJSON", Builtins::kDatePrototypeToJson,
1, false);
// Install i18n fallback functions.
SimpleInstallFunction(prototype, "toLocaleString",
Builtins::kDatePrototypeToString, 0, false);
SimpleInstallFunction(prototype, "toLocaleDateString",
Builtins::kDatePrototypeToDateString, 0, false);
SimpleInstallFunction(prototype, "toLocaleTimeString",
Builtins::kDatePrototypeToTimeString, 0, false);
// Install the @@toPrimitive function.
Handle<JSFunction> to_primitive = InstallFunction(
prototype, factory->to_primitive_symbol(), JS_OBJECT_TYPE,
JSObject::kHeaderSize, MaybeHandle<JSObject>(),
Builtins::kDatePrototypeToPrimitive,
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
// Set the expected parameters for @@toPrimitive to 1; required by builtin.
to_primitive->shared()->set_internal_formal_parameter_count(1);
// Set the length for the function to satisfy ECMA-262.
to_primitive->shared()->set_length(1);
}
{ // -- R e g E x p
// Builtin functions for RegExp.prototype.
Handle<JSObject> prototype =
factory->NewJSObject(isolate->object_function(), TENURED);
Handle<JSFunction> regexp_fun =
InstallFunction(global, "RegExp", JS_REGEXP_TYPE, JSRegExp::kSize,
prototype, Builtins::kRegExpConstructor);
InstallWithIntrinsicDefaultProto(isolate, regexp_fun,
Context::REGEXP_FUNCTION_INDEX);
Handle<SharedFunctionInfo> shared(regexp_fun->shared(), isolate);
shared->SetConstructStub(*isolate->builtins()->RegExpConstructor());
shared->set_instance_class_name(isolate->heap()->RegExp_string());
shared->DontAdaptArguments();
shared->set_length(2);
{
// RegExp.prototype setup.
// Install the "constructor" property on the {prototype}.
JSObject::AddProperty(prototype, factory->constructor_string(),
regexp_fun, DONT_ENUM);
{
Handle<JSFunction> fun = SimpleInstallFunction(
prototype, factory->exec_string(), Builtins::kRegExpPrototypeExec,
1, true, DONT_ENUM);
native_context()->set_regexp_exec_function(*fun);
}
SimpleInstallGetter(prototype, factory->flags_string(),
Builtins::kRegExpPrototypeFlagsGetter, true);
SimpleInstallGetter(prototype, factory->global_string(),
Builtins::kRegExpPrototypeGlobalGetter, true);
SimpleInstallGetter(prototype, factory->ignoreCase_string(),
Builtins::kRegExpPrototypeIgnoreCaseGetter, true);
SimpleInstallGetter(prototype, factory->multiline_string(),
Builtins::kRegExpPrototypeMultilineGetter, true);
SimpleInstallGetter(prototype, factory->source_string(),
Builtins::kRegExpPrototypeSourceGetter, false);
SimpleInstallGetter(prototype, factory->sticky_string(),
Builtins::kRegExpPrototypeStickyGetter, true);
SimpleInstallGetter(prototype, factory->unicode_string(),
Builtins::kRegExpPrototypeUnicodeGetter, true);
SimpleInstallFunction(prototype, "compile",
Builtins::kRegExpPrototypeCompile, 2, false,
DONT_ENUM);
SimpleInstallFunction(prototype, factory->toString_string(),
Builtins::kRegExpPrototypeToString, 0, false,
DONT_ENUM);
SimpleInstallFunction(prototype, "test", Builtins::kRegExpPrototypeTest,
1, true, DONT_ENUM);
{
Handle<JSFunction> fun = SimpleCreateFunction(
isolate, factory->InternalizeUtf8String("[Symbol.match]"),
Builtins::kRegExpPrototypeMatch, 1, false);
InstallFunction(prototype, fun, factory->match_symbol(), DONT_ENUM);
}
{
Handle<JSFunction> fun = SimpleCreateFunction(
isolate, factory->InternalizeUtf8String("[Symbol.replace]"),
Builtins::kRegExpPrototypeReplace, 2, true);
InstallFunction(prototype, fun, factory->replace_symbol(), DONT_ENUM);
}
{
Handle<JSFunction> fun = SimpleCreateFunction(
isolate, factory->InternalizeUtf8String("[Symbol.search]"),
Builtins::kRegExpPrototypeSearch, 1, true);
InstallFunction(prototype, fun, factory->search_symbol(), DONT_ENUM);
}
{
Handle<JSFunction> fun = SimpleCreateFunction(
isolate, factory->InternalizeUtf8String("[Symbol.split]"),
Builtins::kRegExpPrototypeSplit, 2, false);
InstallFunction(prototype, fun, factory->split_symbol(), DONT_ENUM);
}
// Store the initial RegExp.prototype map. This is used in fast-path
// checks. Do not alter the prototype after this point.
native_context()->set_regexp_prototype_map(prototype->map());
}
{
// RegExp getters and setters.
SimpleInstallGetter(regexp_fun,
factory->InternalizeUtf8String("[Symbol.species]"),
factory->species_symbol(),
Builtins::kRegExpPrototypeSpeciesGetter, false);
// Static properties set by a successful match.
const PropertyAttributes no_enum = DONT_ENUM;
SimpleInstallGetterSetter(regexp_fun, factory->input_string(),
Builtins::kRegExpInputGetter,
Builtins::kRegExpInputSetter, no_enum);
SimpleInstallGetterSetter(
regexp_fun, factory->InternalizeUtf8String("$_"),
Builtins::kRegExpInputGetter, Builtins::kRegExpInputSetter, no_enum);
SimpleInstallGetterSetter(
regexp_fun, factory->InternalizeUtf8String("lastMatch"),
Builtins::kRegExpLastMatchGetter, Builtins::kEmptyFunction, no_enum);
SimpleInstallGetterSetter(
regexp_fun, factory->InternalizeUtf8String("$&"),
Builtins::kRegExpLastMatchGetter, Builtins::kEmptyFunction, no_enum);
SimpleInstallGetterSetter(
regexp_fun, factory->InternalizeUtf8String("lastParen"),
Builtins::kRegExpLastParenGetter, Builtins::kEmptyFunction, no_enum);
SimpleInstallGetterSetter(
regexp_fun, factory->InternalizeUtf8String("$+"),
Builtins::kRegExpLastParenGetter, Builtins::kEmptyFunction, no_enum);
SimpleInstallGetterSetter(regexp_fun,
factory->InternalizeUtf8String("leftContext"),
Builtins::kRegExpLeftContextGetter,
Builtins::kEmptyFunction, no_enum);
SimpleInstallGetterSetter(regexp_fun,
factory->InternalizeUtf8String("$`"),
Builtins::kRegExpLeftContextGetter,
Builtins::kEmptyFunction, no_enum);
SimpleInstallGetterSetter(regexp_fun,
factory->InternalizeUtf8String("rightContext"),
Builtins::kRegExpRightContextGetter,
Builtins::kEmptyFunction, no_enum);
SimpleInstallGetterSetter(regexp_fun,
factory->InternalizeUtf8String("$'"),
Builtins::kRegExpRightContextGetter,
Builtins::kEmptyFunction, no_enum);
#define INSTALL_CAPTURE_GETTER(i) \
SimpleInstallGetterSetter( \
regexp_fun, factory->InternalizeUtf8String("$" #i), \
Builtins::kRegExpCapture##i##Getter, Builtins::kEmptyFunction, no_enum)
INSTALL_CAPTURE_GETTER(1);
INSTALL_CAPTURE_GETTER(2);
INSTALL_CAPTURE_GETTER(3);
INSTALL_CAPTURE_GETTER(4);
INSTALL_CAPTURE_GETTER(5);
INSTALL_CAPTURE_GETTER(6);
INSTALL_CAPTURE_GETTER(7);
INSTALL_CAPTURE_GETTER(8);
INSTALL_CAPTURE_GETTER(9);
#undef INSTALL_CAPTURE_GETTER
}
DCHECK(regexp_fun->has_initial_map());
Handle<Map> initial_map(regexp_fun->initial_map());
DCHECK_EQ(0, initial_map->GetInObjectProperties());
Map::EnsureDescriptorSlack(initial_map, 1);
// ECMA-262, section 15.10.7.5.
PropertyAttributes writable =
static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE);
DataDescriptor field(factory->lastIndex_string(),
JSRegExp::kLastIndexFieldIndex, writable,
Representation::Tagged());
initial_map->AppendDescriptor(&field);
static const int num_fields = JSRegExp::kInObjectFieldCount;
initial_map->SetInObjectProperties(num_fields);
initial_map->set_unused_property_fields(0);
initial_map->set_instance_size(initial_map->instance_size() +
num_fields * kPointerSize);
{ // Internal: RegExpInternalMatch
Handle<JSFunction> function =
factory->NewFunction(isolate->factory()->empty_string(),
isolate->builtins()->RegExpInternalMatch(),
JS_OBJECT_TYPE, JSObject::kHeaderSize);
function->shared()->set_internal_formal_parameter_count(2);
function->shared()->set_length(2);
function->shared()->set_native(true);
native_context()->set(Context::REGEXP_INTERNAL_MATCH, *function);
}
// Create the last match info. One for external use, and one for internal
// use when we don't want to modify the externally visible match info.
Handle<RegExpMatchInfo> last_match_info = factory->NewRegExpMatchInfo();
native_context()->set_regexp_last_match_info(*last_match_info);
Handle<RegExpMatchInfo> internal_match_info = factory->NewRegExpMatchInfo();
native_context()->set_regexp_internal_match_info(*internal_match_info);
}
{ // -- E r r o r
InstallError(isolate, global, factory->Error_string(),
Context::ERROR_FUNCTION_INDEX);
InstallMakeError(isolate, isolate->builtins()->MakeError(),
Context::MAKE_ERROR_INDEX);
}
{ // -- E v a l E r r o r
InstallError(isolate, global, factory->EvalError_string(),
Context::EVAL_ERROR_FUNCTION_INDEX);
}
{ // -- R a n g e E r r o r
InstallError(isolate, global, factory->RangeError_string(),
Context::RANGE_ERROR_FUNCTION_INDEX);
InstallMakeError(isolate, isolate->builtins()->MakeRangeError(),
Context::MAKE_RANGE_ERROR_INDEX);
}
{ // -- R e f e r e n c e E r r o r
InstallError(isolate, global, factory->ReferenceError_string(),
Context::REFERENCE_ERROR_FUNCTION_INDEX);
}
{ // -- S y n t a x E r r o r
InstallError(isolate, global, factory->SyntaxError_string(),
Context::SYNTAX_ERROR_FUNCTION_INDEX);
InstallMakeError(isolate, isolate->builtins()->MakeSyntaxError(),
Context::MAKE_SYNTAX_ERROR_INDEX);
}
{ // -- T y p e E r r o r
InstallError(isolate, global, factory->TypeError_string(),
Context::TYPE_ERROR_FUNCTION_INDEX);
InstallMakeError(isolate, isolate->builtins()->MakeTypeError(),
Context::MAKE_TYPE_ERROR_INDEX);
}
{ // -- U R I E r r o r
InstallError(isolate, global, factory->URIError_string(),
Context::URI_ERROR_FUNCTION_INDEX);
InstallMakeError(isolate, isolate->builtins()->MakeURIError(),
Context::MAKE_URI_ERROR_INDEX);
}
{ // -- C o m p i l e E r r o r
Handle<JSObject> dummy = factory->NewJSObject(isolate->object_function());
InstallError(isolate, dummy, factory->CompileError_string(),
Context::WASM_COMPILE_ERROR_FUNCTION_INDEX);
// -- R u n t i m e E r r o r
InstallError(isolate, dummy, factory->RuntimeError_string(),
Context::WASM_RUNTIME_ERROR_FUNCTION_INDEX);
}
// Initialize the embedder data slot.
Handle<FixedArray> embedder_data = factory->NewFixedArray(3);
native_context()->set_embedder_data(*embedder_data);
{ // -- J S O N
Handle<String> name = factory->InternalizeUtf8String("JSON");
Handle<JSFunction> cons = factory->NewFunction(name);
JSFunction::SetInstancePrototype(cons,
Handle<Object>(native_context()->initial_object_prototype(), isolate));
Handle<JSObject> json_object = factory->NewJSObject(cons, TENURED);
DCHECK(json_object->IsJSObject());
JSObject::AddProperty(global, name, json_object, DONT_ENUM);
SimpleInstallFunction(json_object, "parse", Builtins::kJsonParse, 2, false);
SimpleInstallFunction(json_object, "stringify", Builtins::kJsonStringify, 3,
true);
JSObject::AddProperty(
json_object, factory->to_string_tag_symbol(),
factory->NewStringFromAsciiChecked("JSON"),
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
}
{ // -- M a t h
Handle<String> name = factory->InternalizeUtf8String("Math");
Handle<JSFunction> cons = factory->NewFunction(name);
JSFunction::SetInstancePrototype(
cons,
Handle<Object>(native_context()->initial_object_prototype(), isolate));
Handle<JSObject> math = factory->NewJSObject(cons, TENURED);
DCHECK(math->IsJSObject());
JSObject::AddProperty(global, name, math, DONT_ENUM);
SimpleInstallFunction(math, "abs", Builtins::kMathAbs, 1, true);
SimpleInstallFunction(math, "acos", Builtins::kMathAcos, 1, true);
SimpleInstallFunction(math, "acosh", Builtins::kMathAcosh, 1, true);
SimpleInstallFunction(math, "asin", Builtins::kMathAsin, 1, true);
SimpleInstallFunction(math, "asinh", Builtins::kMathAsinh, 1, true);
SimpleInstallFunction(math, "atan", Builtins::kMathAtan, 1, true);
SimpleInstallFunction(math, "atanh", Builtins::kMathAtanh, 1, true);
SimpleInstallFunction(math, "atan2", Builtins::kMathAtan2, 2, true);
SimpleInstallFunction(math, "ceil", Builtins::kMathCeil, 1, true);
SimpleInstallFunction(math, "cbrt", Builtins::kMathCbrt, 1, true);
SimpleInstallFunction(math, "expm1", Builtins::kMathExpm1, 1, true);
SimpleInstallFunction(math, "clz32", Builtins::kMathClz32, 1, true);
SimpleInstallFunction(math, "cos", Builtins::kMathCos, 1, true);
SimpleInstallFunction(math, "cosh", Builtins::kMathCosh, 1, true);
SimpleInstallFunction(math, "exp", Builtins::kMathExp, 1, true);
Handle<JSFunction> math_floor =
SimpleInstallFunction(math, "floor", Builtins::kMathFloor, 1, true);
native_context()->set_math_floor(*math_floor);
SimpleInstallFunction(math, "fround", Builtins::kMathFround, 1, true);
SimpleInstallFunction(math, "hypot", Builtins::kMathHypot, 2, false);
SimpleInstallFunction(math, "imul", Builtins::kMathImul, 2, true);
SimpleInstallFunction(math, "log", Builtins::kMathLog, 1, true);
SimpleInstallFunction(math, "log1p", Builtins::kMathLog1p, 1, true);
SimpleInstallFunction(math, "log2", Builtins::kMathLog2, 1, true);
SimpleInstallFunction(math, "log10", Builtins::kMathLog10, 1, true);
SimpleInstallFunction(math, "max", Builtins::kMathMax, 2, false);
SimpleInstallFunction(math, "min", Builtins::kMathMin, 2, false);
Handle<JSFunction> math_pow =
SimpleInstallFunction(math, "pow", Builtins::kMathPow, 2, true);
native_context()->set_math_pow(*math_pow);
SimpleInstallFunction(math, "random", Builtins::kMathRandom, 0, true);
SimpleInstallFunction(math, "round", Builtins::kMathRound, 1, true);
SimpleInstallFunction(math, "sign", Builtins::kMathSign, 1, true);
SimpleInstallFunction(math, "sin", Builtins::kMathSin, 1, true);
SimpleInstallFunction(math, "sinh", Builtins::kMathSinh, 1, true);
SimpleInstallFunction(math, "sqrt", Builtins::kMathSqrt, 1, true);
SimpleInstallFunction(math, "tan", Builtins::kMathTan, 1, true);
SimpleInstallFunction(math, "tanh", Builtins::kMathTanh, 1, true);
SimpleInstallFunction(math, "trunc", Builtins::kMathTrunc, 1, true);
// Install math constants.
double const kE = base::ieee754::exp(1.0);
double const kPI = 3.1415926535897932;
JSObject::AddProperty(
math, factory->NewStringFromAsciiChecked("E"), factory->NewNumber(kE),
static_cast<PropertyAttributes>(DONT_DELETE | DONT_ENUM | READ_ONLY));
JSObject::AddProperty(
math, factory->NewStringFromAsciiChecked("LN10"),
factory->NewNumber(base::ieee754::log(10.0)),
static_cast<PropertyAttributes>(DONT_DELETE | DONT_ENUM | READ_ONLY));
JSObject::AddProperty(
math, factory->NewStringFromAsciiChecked("LN2"),
factory->NewNumber(base::ieee754::log(2.0)),
static_cast<PropertyAttributes>(DONT_DELETE | DONT_ENUM | READ_ONLY));
JSObject::AddProperty(
math, factory->NewStringFromAsciiChecked("LOG10E"),
factory->NewNumber(base::ieee754::log10(kE)),
static_cast<PropertyAttributes>(DONT_DELETE | DONT_ENUM | READ_ONLY));
JSObject::AddProperty(
math, factory->NewStringFromAsciiChecked("LOG2E"),
factory->NewNumber(base::ieee754::log2(kE)),
static_cast<PropertyAttributes>(DONT_DELETE | DONT_ENUM | READ_ONLY));
JSObject::AddProperty(
math, factory->NewStringFromAsciiChecked("PI"), factory->NewNumber(kPI),
static_cast<PropertyAttributes>(DONT_DELETE | DONT_ENUM | READ_ONLY));
JSObject::AddProperty(
math, factory->NewStringFromAsciiChecked("SQRT1_2"),
factory->NewNumber(std::sqrt(0.5)),
static_cast<PropertyAttributes>(DONT_DELETE | DONT_ENUM | READ_ONLY));
JSObject::AddProperty(
math, factory->NewStringFromAsciiChecked("SQRT2"),
factory->NewNumber(std::sqrt(2.0)),
static_cast<PropertyAttributes>(DONT_DELETE | DONT_ENUM | READ_ONLY));
JSObject::AddProperty(
math, factory->to_string_tag_symbol(),
factory->NewStringFromAsciiChecked("Math"),
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
}
{ // -- A r r a y B u f f e r
Handle<JSFunction> array_buffer_fun = InstallArrayBuffer(
global, "ArrayBuffer", Builtins::kArrayBufferPrototypeGetByteLength,
BuiltinFunctionId::kArrayBufferByteLength);
InstallWithIntrinsicDefaultProto(isolate, array_buffer_fun,
Context::ARRAY_BUFFER_FUN_INDEX);
}
{ // -- T y p e d A r r a y
Handle<JSObject> prototype =
factory->NewJSObject(isolate->object_function(), TENURED);
native_context()->set_typed_array_prototype(*prototype);
Handle<JSFunction> typed_array_fun =
CreateFunction(isolate, factory->InternalizeUtf8String("TypedArray"),
JS_TYPED_ARRAY_TYPE, JSTypedArray::kSize, prototype,
Builtins::kIllegal);
// Install the "constructor" property on the {prototype}.
JSObject::AddProperty(prototype, factory->constructor_string(),
typed_array_fun, DONT_ENUM);
native_context()->set_typed_array_function(*typed_array_fun);
// Install the "buffer", "byteOffset", "byteLength" and "length"
// getters on the {prototype}.
SimpleInstallGetter(prototype, factory->buffer_string(),
Builtins::kTypedArrayPrototypeBuffer, false);
SimpleInstallGetter(prototype, factory->byte_length_string(),
Builtins::kTypedArrayPrototypeByteLength, true,
kTypedArrayByteLength);
SimpleInstallGetter(prototype, factory->byte_offset_string(),
Builtins::kTypedArrayPrototypeByteOffset, true,
kTypedArrayByteOffset);
SimpleInstallGetter(prototype, factory->length_string(),
Builtins::kTypedArrayPrototypeLength, true,
kTypedArrayLength);
// Install "keys", "values" and "entries" methods on the {prototype}.
Handle<JSFunction> entries =
SimpleInstallFunction(prototype, factory->entries_string(),
Builtins::kTypedArrayPrototypeEntries, 0, true);
entries->shared()->set_builtin_function_id(kTypedArrayEntries);
Handle<JSFunction> keys =
SimpleInstallFunction(prototype, factory->keys_string(),
Builtins::kTypedArrayPrototypeKeys, 0, true);
keys->shared()->set_builtin_function_id(kTypedArrayKeys);
Handle<JSFunction> values =
SimpleInstallFunction(prototype, factory->values_string(),
Builtins::kTypedArrayPrototypeValues, 0, true);
values->shared()->set_builtin_function_id(kTypedArrayValues);
JSObject::AddProperty(prototype, factory->iterator_symbol(), values,
DONT_ENUM);
}
{ // -- T y p e d A r r a y s
#define INSTALL_TYPED_ARRAY(Type, type, TYPE, ctype, size) \
{ \
Handle<JSFunction> fun; \
InstallTypedArray(#Type "Array", TYPE##_ELEMENTS, &fun); \
InstallWithIntrinsicDefaultProto(isolate, fun, \
Context::TYPE##_ARRAY_FUN_INDEX); \
}
TYPED_ARRAYS(INSTALL_TYPED_ARRAY)
#undef INSTALL_TYPED_ARRAY
}
{ // -- D a t a V i e w
Handle<JSObject> prototype =
factory->NewJSObject(isolate->object_function(), TENURED);
Handle<JSFunction> data_view_fun =
InstallFunction(global, "DataView", JS_DATA_VIEW_TYPE,
JSDataView::kSizeWithInternalFields, prototype,
Builtins::kDataViewConstructor);
InstallWithIntrinsicDefaultProto(isolate, data_view_fun,
Context::DATA_VIEW_FUN_INDEX);
data_view_fun->shared()->SetConstructStub(
*isolate->builtins()->DataViewConstructor_ConstructStub());
data_view_fun->shared()->set_length(3);
data_view_fun->shared()->DontAdaptArguments();
// Install the @@toStringTag property on the {prototype}.
JSObject::AddProperty(
prototype, factory->to_string_tag_symbol(),
factory->NewStringFromAsciiChecked("DataView"),
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
// Install the "constructor" property on the {prototype}.
JSObject::AddProperty(prototype, factory->constructor_string(),
data_view_fun, DONT_ENUM);
// Install the "buffer", "byteOffset" and "byteLength" getters
// on the {prototype}.
SimpleInstallGetter(prototype, factory->buffer_string(),
Builtins::kDataViewPrototypeGetBuffer, false,
kDataViewBuffer);
SimpleInstallGetter(prototype, factory->byte_length_string(),
Builtins::kDataViewPrototypeGetByteLength, false,
kDataViewByteLength);
SimpleInstallGetter(prototype, factory->byte_offset_string(),
Builtins::kDataViewPrototypeGetByteOffset, false,
kDataViewByteOffset);
SimpleInstallFunction(prototype, "getInt8",
Builtins::kDataViewPrototypeGetInt8, 1, false);
SimpleInstallFunction(prototype, "setInt8",
Builtins::kDataViewPrototypeSetInt8, 2, false);
SimpleInstallFunction(prototype, "getUint8",
Builtins::kDataViewPrototypeGetUint8, 1, false);
SimpleInstallFunction(prototype, "setUint8",
Builtins::kDataViewPrototypeSetUint8, 2, false);
SimpleInstallFunction(prototype, "getInt16",
Builtins::kDataViewPrototypeGetInt16, 1, false);
SimpleInstallFunction(prototype, "setInt16",
Builtins::kDataViewPrototypeSetInt16, 2, false);
SimpleInstallFunction(prototype, "getUint16",
Builtins::kDataViewPrototypeGetUint16, 1, false);
SimpleInstallFunction(prototype, "setUint16",
Builtins::kDataViewPrototypeSetUint16, 2, false);
SimpleInstallFunction(prototype, "getInt32",
Builtins::kDataViewPrototypeGetInt32, 1, false);
SimpleInstallFunction(prototype, "setInt32",
Builtins::kDataViewPrototypeSetInt32, 2, false);
SimpleInstallFunction(prototype, "getUint32",
Builtins::kDataViewPrototypeGetUint32, 1, false);
SimpleInstallFunction(prototype, "setUint32",
Builtins::kDataViewPrototypeSetUint32, 2, false);
SimpleInstallFunction(prototype, "getFloat32",
Builtins::kDataViewPrototypeGetFloat32, 1, false);
SimpleInstallFunction(prototype, "setFloat32",
Builtins::kDataViewPrototypeSetFloat32, 2, false);
SimpleInstallFunction(prototype, "getFloat64",
Builtins::kDataViewPrototypeGetFloat64, 1, false);
SimpleInstallFunction(prototype, "setFloat64",
Builtins::kDataViewPrototypeSetFloat64, 2, false);
}
{ // -- M a p
Handle<JSFunction> js_map_fun = InstallFunction(
global, "Map", JS_MAP_TYPE, JSMap::kSize,
isolate->initial_object_prototype(), Builtins::kIllegal);
InstallWithIntrinsicDefaultProto(isolate, js_map_fun,
Context::JS_MAP_FUN_INDEX);
}
{ // -- S e t
Handle<JSFunction> js_set_fun = InstallFunction(
global, "Set", JS_SET_TYPE, JSSet::kSize,
isolate->initial_object_prototype(), Builtins::kIllegal);
InstallWithIntrinsicDefaultProto(isolate, js_set_fun,
Context::JS_SET_FUN_INDEX);
}
{ // -- J S M o d u l e N a m e s p a c e
Handle<Map> map =
factory->NewMap(JS_MODULE_NAMESPACE_TYPE, JSModuleNamespace::kSize);
Map::SetPrototype(map, isolate->factory()->null_value());
Map::EnsureDescriptorSlack(map, 2);
native_context()->set_js_module_namespace_map(*map);
{ // Install @@toStringTag.
PropertyAttributes attribs =
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY);
DataConstantDescriptor d(factory->to_string_tag_symbol(),
factory->NewStringFromAsciiChecked("Module"),
attribs);
map->AppendDescriptor(&d);
}
{ // Install @@iterator.
Handle<JSFunction> iterator = SimpleCreateFunction(
isolate, factory->NewStringFromAsciiChecked("[Symbol.iterator]"),
Builtins::kModuleNamespaceIterator, 0, true);
iterator->shared()->set_native(true);
// TODO(neis): Is this really supposed to be writable?
DataConstantDescriptor d(factory->iterator_symbol(), iterator, DONT_ENUM);
map->AppendDescriptor(&d);
}
}
{ // -- I t e r a t o r R e s u l t
Handle<Map> map =
factory->NewMap(JS_OBJECT_TYPE, JSIteratorResult::kSize);
Map::SetPrototype(map, isolate->initial_object_prototype());
Map::EnsureDescriptorSlack(map, 2);
{ // value
DataDescriptor d(factory->value_string(), JSIteratorResult::kValueIndex,
NONE, Representation::Tagged());
map->AppendDescriptor(&d);
}
{ // done
DataDescriptor d(factory->done_string(), JSIteratorResult::kDoneIndex,
NONE, Representation::Tagged());
map->AppendDescriptor(&d);
}
map->SetConstructor(native_context()->object_function());
map->SetInObjectProperties(2);
native_context()->set_iterator_result_map(*map);
}
{ // -- W e a k M a p
Handle<JSFunction> js_weak_map_fun = InstallFunction(
global, "WeakMap", JS_WEAK_MAP_TYPE, JSWeakMap::kSize,
isolate->initial_object_prototype(), Builtins::kIllegal);
InstallWithIntrinsicDefaultProto(isolate, js_weak_map_fun,
Context::JS_WEAK_MAP_FUN_INDEX);
}
{ // -- W e a k S e t
Handle<JSFunction> js_weak_set_fun = InstallFunction(
global, "WeakSet", JS_WEAK_SET_TYPE, JSWeakSet::kSize,
isolate->initial_object_prototype(), Builtins::kIllegal);
InstallWithIntrinsicDefaultProto(isolate, js_weak_set_fun,
Context::JS_WEAK_SET_FUN_INDEX);
}
{ // -- P r o x y
CreateJSProxyMaps();
Handle<String> name = factory->Proxy_string();
Handle<Code> code(isolate->builtins()->ProxyConstructor());
Handle<JSFunction> proxy_function =
factory->NewFunction(isolate->proxy_function_map(),
factory->Proxy_string(), MaybeHandle<Code>(code));
JSFunction::SetInitialMap(
proxy_function, Handle<Map>(native_context()->proxy_map(), isolate),
factory->null_value());
proxy_function->shared()->SetConstructStub(
*isolate->builtins()->ProxyConstructor_ConstructStub());
proxy_function->shared()->set_internal_formal_parameter_count(2);
proxy_function->shared()->set_length(2);
native_context()->set_proxy_function(*proxy_function);
InstallFunction(global, name, proxy_function, factory->Object_string());
}
{ // -- R e f l e c t
Handle<String> reflect_string = factory->InternalizeUtf8String("Reflect");
Handle<JSObject> reflect =
factory->NewJSObject(isolate->object_function(), TENURED);
JSObject::AddProperty(global, reflect_string, reflect, DONT_ENUM);
Handle<JSFunction> define_property =
SimpleInstallFunction(reflect, factory->defineProperty_string(),
Builtins::kReflectDefineProperty, 3, true);
native_context()->set_reflect_define_property(*define_property);
Handle<JSFunction> delete_property =
SimpleInstallFunction(reflect, factory->deleteProperty_string(),
Builtins::kReflectDeleteProperty, 2, true);
native_context()->set_reflect_delete_property(*delete_property);
Handle<JSFunction> apply = SimpleInstallFunction(
reflect, factory->apply_string(), Builtins::kReflectApply, 3, false);
native_context()->set_reflect_apply(*apply);
Handle<JSFunction> construct =
SimpleInstallFunction(reflect, factory->construct_string(),
Builtins::kReflectConstruct, 2, false);
native_context()->set_reflect_construct(*construct);
SimpleInstallFunction(reflect, factory->get_string(), Builtins::kReflectGet,
2, false);
SimpleInstallFunction(reflect, factory->getOwnPropertyDescriptor_string(),
Builtins::kReflectGetOwnPropertyDescriptor, 2, true);
SimpleInstallFunction(reflect, factory->getPrototypeOf_string(),
Builtins::kReflectGetPrototypeOf, 1, true);
SimpleInstallFunction(reflect, factory->has_string(), Builtins::kReflectHas,
2, true);
SimpleInstallFunction(reflect, factory->isExtensible_string(),
Builtins::kReflectIsExtensible, 1, true);
SimpleInstallFunction(reflect, factory->ownKeys_string(),
Builtins::kReflectOwnKeys, 1, true);
SimpleInstallFunction(reflect, factory->preventExtensions_string(),
Builtins::kReflectPreventExtensions, 1, true);
SimpleInstallFunction(reflect, factory->set_string(), Builtins::kReflectSet,
3, false);
SimpleInstallFunction(reflect, factory->setPrototypeOf_string(),
Builtins::kReflectSetPrototypeOf, 2, true);
}
{ // --- B o u n d F u n c t i o n
Handle<Map> map =
factory->NewMap(JS_BOUND_FUNCTION_TYPE, JSBoundFunction::kSize);
map->set_is_callable();
Map::SetPrototype(map, empty_function);
PropertyAttributes roc_attribs =
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY);
Map::EnsureDescriptorSlack(map, 2);
Handle<AccessorInfo> bound_length =
Accessors::BoundFunctionLengthInfo(isolate, roc_attribs);
{ // length
AccessorConstantDescriptor d(factory->length_string(), bound_length,
roc_attribs);
map->AppendDescriptor(&d);
}
Handle<AccessorInfo> bound_name =
Accessors::BoundFunctionNameInfo(isolate, roc_attribs);
{ // length
AccessorConstantDescriptor d(factory->name_string(), bound_name,
roc_attribs);
map->AppendDescriptor(&d);
}
map->SetInObjectProperties(0);
native_context()->set_bound_function_without_constructor_map(*map);
map = Map::Copy(map, "IsConstructor");
map->set_is_constructor(true);
native_context()->set_bound_function_with_constructor_map(*map);
}
{ // --- sloppy arguments map
// Make sure we can recognize argument objects at runtime.
// This is done by introducing an anonymous function with
// class_name equals 'Arguments'.
Handle<String> arguments_string = factory->Arguments_string();
Handle<Code> code = isolate->builtins()->Illegal();
Handle<JSFunction> function = factory->NewFunctionWithoutPrototype(
arguments_string, code);
function->shared()->set_instance_class_name(*arguments_string);
Handle<Map> map = factory->NewMap(
JS_ARGUMENTS_TYPE, JSSloppyArgumentsObject::kSize, FAST_ELEMENTS);
// Create the descriptor array for the arguments object.
Map::EnsureDescriptorSlack(map, 2);
{ // length
DataDescriptor d(factory->length_string(),
JSSloppyArgumentsObject::kLengthIndex, DONT_ENUM,
Representation::Tagged());
map->AppendDescriptor(&d);
}
{ // callee
DataDescriptor d(factory->callee_string(),
JSSloppyArgumentsObject::kCalleeIndex, DONT_ENUM,
Representation::Tagged());
map->AppendDescriptor(&d);
}
// @@iterator method is added later.
map->SetInObjectProperties(2);
native_context()->set_sloppy_arguments_map(*map);
DCHECK(!function->has_initial_map());
JSFunction::SetInitialMap(function, map,
isolate->initial_object_prototype());
DCHECK(!map->is_dictionary_map());
DCHECK(IsFastObjectElementsKind(map->elements_kind()));
}
{ // --- fast and slow aliased arguments map
Handle<Map> map = isolate->sloppy_arguments_map();
map = Map::Copy(map, "FastAliasedArguments");
map->set_elements_kind(FAST_SLOPPY_ARGUMENTS_ELEMENTS);
DCHECK_EQ(2, map->GetInObjectProperties());
native_context()->set_fast_aliased_arguments_map(*map);
map = Map::Copy(map, "SlowAliasedArguments");
map->set_elements_kind(SLOW_SLOPPY_ARGUMENTS_ELEMENTS);
DCHECK_EQ(2, map->GetInObjectProperties());
native_context()->set_slow_aliased_arguments_map(*map);
}
{ // --- strict mode arguments map
const PropertyAttributes attributes =
static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY);
// Create the ThrowTypeError function.
Handle<AccessorPair> callee = factory->NewAccessorPair();
Handle<JSFunction> poison = GetStrictArgumentsPoisonFunction();
// Install the ThrowTypeError function.
callee->set_getter(*poison);
callee->set_setter(*poison);
// Create the map. Allocate one in-object field for length.
Handle<Map> map = factory->NewMap(
JS_ARGUMENTS_TYPE, JSStrictArgumentsObject::kSize, FAST_ELEMENTS);
// Create the descriptor array for the arguments object.
Map::EnsureDescriptorSlack(map, 2);
{ // length
DataDescriptor d(factory->length_string(),
JSStrictArgumentsObject::kLengthIndex, DONT_ENUM,
Representation::Tagged());
map->AppendDescriptor(&d);
}
{ // callee
AccessorConstantDescriptor d(factory->callee_string(), callee,
attributes);
map->AppendDescriptor(&d);
}
// @@iterator method is added later.
DCHECK_EQ(native_context()->object_function()->prototype(),
*isolate->initial_object_prototype());
Map::SetPrototype(map, isolate->initial_object_prototype());
map->SetInObjectProperties(1);
// Copy constructor from the sloppy arguments boilerplate.
map->SetConstructor(
native_context()->sloppy_arguments_map()->GetConstructor());
native_context()->set_strict_arguments_map(*map);
DCHECK(!map->is_dictionary_map());
DCHECK(IsFastObjectElementsKind(map->elements_kind()));
}
{ // --- context extension
// Create a function for the context extension objects.
Handle<Code> code = isolate->builtins()->Illegal();
Handle<JSFunction> context_extension_fun = factory->NewFunction(
factory->empty_string(), code, JS_CONTEXT_EXTENSION_OBJECT_TYPE,
JSObject::kHeaderSize);
Handle<String> name = factory->InternalizeOneByteString(
STATIC_CHAR_VECTOR("context_extension"));
context_extension_fun->shared()->set_instance_class_name(*name);
native_context()->set_context_extension_function(*context_extension_fun);
}
{
// Set up the call-as-function delegate.
Handle<Code> code = isolate->builtins()->HandleApiCallAsFunction();
Handle<JSFunction> delegate = factory->NewFunction(
factory->empty_string(), code, JS_OBJECT_TYPE, JSObject::kHeaderSize);
native_context()->set_call_as_function_delegate(*delegate);
delegate->shared()->DontAdaptArguments();
}
{
// Set up the call-as-constructor delegate.
Handle<Code> code = isolate->builtins()->HandleApiCallAsConstructor();
Handle<JSFunction> delegate = factory->NewFunction(
factory->empty_string(), code, JS_OBJECT_TYPE, JSObject::kHeaderSize);
native_context()->set_call_as_constructor_delegate(*delegate);
delegate->shared()->DontAdaptArguments();
}
} // NOLINT(readability/fn_size)
void Genesis::InstallTypedArray(const char* name, ElementsKind elements_kind,
Handle<JSFunction>* fun) {
Handle<JSObject> global = Handle<JSObject>(native_context()->global_object());
Handle<JSObject> typed_array_prototype =
Handle<JSObject>(isolate()->typed_array_prototype());
Handle<JSFunction> typed_array_function =
Handle<JSFunction>(isolate()->typed_array_function());
Handle<JSObject> prototype =
factory()->NewJSObject(isolate()->object_function(), TENURED);
Handle<JSFunction> result = InstallFunction(
global, name, JS_TYPED_ARRAY_TYPE, JSTypedArray::kSizeWithInternalFields,
prototype, Builtins::kIllegal);
result->initial_map()->set_elements_kind(elements_kind);
CHECK(JSObject::SetPrototype(result, typed_array_function, false,
Object::DONT_THROW)
.FromJust());
CHECK(JSObject::SetPrototype(prototype, typed_array_prototype, false,
Object::DONT_THROW)
.FromJust());
*fun = result;
}
void Genesis::InitializeExperimentalGlobal() {
#define FEATURE_INITIALIZE_GLOBAL(id, descr) InitializeGlobal_##id();
HARMONY_INPROGRESS(FEATURE_INITIALIZE_GLOBAL)
HARMONY_STAGED(FEATURE_INITIALIZE_GLOBAL)
HARMONY_SHIPPING(FEATURE_INITIALIZE_GLOBAL)
#undef FEATURE_INITIALIZE_GLOBAL
}
bool Bootstrapper::CompileBuiltin(Isolate* isolate, int index) {
Vector<const char> name = Natives::GetScriptName(index);
Handle<String> source_code =
isolate->bootstrapper()->SourceLookup<Natives>(index);
// We pass in extras_utils so that builtin code can set it up for later use
// by actual extras code, compiled with CompileExtraBuiltin.
Handle<Object> global = isolate->global_object();
Handle<Object> utils = isolate->natives_utils_object();
Handle<Object> extras_utils = isolate->extras_utils_object();
Handle<Object> args[] = {global, utils, extras_utils};
return Bootstrapper::CompileNative(isolate, name, source_code,
arraysize(args), args, NATIVES_CODE);
}
bool Bootstrapper::CompileExperimentalBuiltin(Isolate* isolate, int index) {
HandleScope scope(isolate);
Vector<const char> name = ExperimentalNatives::GetScriptName(index);
Handle<String> source_code =
isolate->bootstrapper()->SourceLookup<ExperimentalNatives>(index);
Handle<Object> global = isolate->global_object();
Handle<Object> utils = isolate->natives_utils_object();
Handle<Object> args[] = {global, utils};
return Bootstrapper::CompileNative(isolate, name, source_code,
arraysize(args), args, NATIVES_CODE);
}
bool Bootstrapper::CompileExtraBuiltin(Isolate* isolate, int index) {
HandleScope scope(isolate);
Vector<const char> name = ExtraNatives::GetScriptName(index);
Handle<String> source_code =
isolate->bootstrapper()->SourceLookup<ExtraNatives>(index);
Handle<Object> global = isolate->global_object();
Handle<Object> binding = isolate->extras_binding_object();
Handle<Object> extras_utils = isolate->extras_utils_object();
Handle<Object> args[] = {global, binding, extras_utils};
return Bootstrapper::CompileNative(isolate, name, source_code,
arraysize(args), args, EXTENSION_CODE);
}
bool Bootstrapper::CompileExperimentalExtraBuiltin(Isolate* isolate,
int index) {
HandleScope scope(isolate);
Vector<const char> name = ExperimentalExtraNatives::GetScriptName(index);
Handle<String> source_code =
isolate->bootstrapper()->SourceLookup<ExperimentalExtraNatives>(index);
Handle<Object> global = isolate->global_object();
Handle<Object> binding = isolate->extras_binding_object();
Handle<Object> extras_utils = isolate->extras_utils_object();
Handle<Object> args[] = {global, binding, extras_utils};
return Bootstrapper::CompileNative(isolate, name, source_code,
arraysize(args), args, EXTENSION_CODE);
}
bool Bootstrapper::CompileNative(Isolate* isolate, Vector<const char> name,
Handle<String> source, int argc,
Handle<Object> argv[],
NativesFlag natives_flag) {
SuppressDebug compiling_natives(isolate->debug());
// During genesis, the boilerplate for stack overflow won't work until the
// environment has been at least partially initialized. Add a stack check
// before entering JS code to catch overflow early.
StackLimitCheck check(isolate);
if (check.JsHasOverflowed(1 * KB)) {
isolate->StackOverflow();
return false;
}
Handle<Context> context(isolate->context());
Handle<String> script_name =
isolate->factory()->NewStringFromUtf8(name).ToHandleChecked();
Handle<SharedFunctionInfo> function_info =
Compiler::GetSharedFunctionInfoForScript(
source, script_name, 0, 0, ScriptOriginOptions(), Handle<Object>(),
context, NULL, NULL, ScriptCompiler::kNoCompileOptions, natives_flag,
false);
if (function_info.is_null()) return false;
DCHECK(context->IsNativeContext());
Handle<JSFunction> fun =
isolate->factory()->NewFunctionFromSharedFunctionInfo(function_info,
context);
Handle<Object> receiver = isolate->factory()->undefined_value();
// For non-extension scripts, run script to get the function wrapper.
Handle<Object> wrapper;
if (!Execution::Call(isolate, fun, receiver, 0, NULL).ToHandle(&wrapper)) {
return false;
}
// Then run the function wrapper.
return !Execution::Call(isolate, Handle<JSFunction>::cast(wrapper), receiver,
argc, argv).is_null();
}
bool Genesis::CallUtilsFunction(Isolate* isolate, const char* name) {
Handle<JSObject> utils =
Handle<JSObject>::cast(isolate->natives_utils_object());
Handle<String> name_string =
isolate->factory()->NewStringFromAsciiChecked(name);
Handle<Object> fun = JSObject::GetDataProperty(utils, name_string);
Handle<Object> receiver = isolate->factory()->undefined_value();
Handle<Object> args[] = {utils};
return !Execution::Call(isolate, fun, receiver, 1, args).is_null();
}
bool Genesis::CompileExtension(Isolate* isolate, v8::Extension* extension) {
Factory* factory = isolate->factory();
HandleScope scope(isolate);
Handle<SharedFunctionInfo> function_info;
Handle<String> source =
isolate->factory()
->NewExternalStringFromOneByte(extension->source())
.ToHandleChecked();
DCHECK(source->IsOneByteRepresentation());
// If we can't find the function in the cache, we compile a new
// function and insert it into the cache.
Vector<const char> name = CStrVector(extension->name());
SourceCodeCache* cache = isolate->bootstrapper()->extensions_cache();
Handle<Context> context(isolate->context());
DCHECK(context->IsNativeContext());
if (!cache->Lookup(name, &function_info)) {
Handle<String> script_name =
factory->NewStringFromUtf8(name).ToHandleChecked();
function_info = Compiler::GetSharedFunctionInfoForScript(
source, script_name, 0, 0, ScriptOriginOptions(), Handle<Object>(),
context, extension, NULL, ScriptCompiler::kNoCompileOptions,
EXTENSION_CODE, false);
if (function_info.is_null()) return false;
cache->Add(name, function_info);
}
// Set up the function context. Conceptually, we should clone the
// function before overwriting the context but since we're in a
// single-threaded environment it is not strictly necessary.
Handle<JSFunction> fun =
factory->NewFunctionFromSharedFunctionInfo(function_info, context);
// Call function using either the runtime object or the global
// object as the receiver. Provide no parameters.
Handle<Object> receiver = isolate->global_object();
return !Execution::Call(isolate, fun, receiver, 0, NULL).is_null();
}
static Handle<JSObject> ResolveBuiltinIdHolder(Handle<Context> native_context,
const char* holder_expr) {
Isolate* isolate = native_context->GetIsolate();
Factory* factory = isolate->factory();
Handle<JSGlobalObject> global(native_context->global_object());
const char* period_pos = strchr(holder_expr, '.');
if (period_pos == NULL) {
return Handle<JSObject>::cast(
Object::GetPropertyOrElement(
global, factory->InternalizeUtf8String(holder_expr))
.ToHandleChecked());
}
const char* inner = period_pos + 1;
DCHECK(!strchr(inner, '.'));
Vector<const char> property(holder_expr,
static_cast<int>(period_pos - holder_expr));
Handle<String> property_string = factory->InternalizeUtf8String(property);
DCHECK(!property_string.is_null());
Handle<JSObject> object = Handle<JSObject>::cast(
JSReceiver::GetProperty(global, property_string).ToHandleChecked());
if (strcmp("prototype", inner) == 0) {
Handle<JSFunction> function = Handle<JSFunction>::cast(object);
return Handle<JSObject>(JSObject::cast(function->prototype()));
}
Handle<String> inner_string = factory->InternalizeUtf8String(inner);
DCHECK(!inner_string.is_null());
Handle<Object> value =
JSReceiver::GetProperty(object, inner_string).ToHandleChecked();
return Handle<JSObject>::cast(value);
}
void Genesis::ConfigureUtilsObject(GlobalContextType context_type) {
switch (context_type) {
// We still need the utils object to find debug functions.
case DEBUG_CONTEXT:
return;
// Expose the natives in global if a valid name for it is specified.
case FULL_CONTEXT: {
// We still need the utils object after deserialization.
if (isolate()->serializer_enabled()) return;
if (FLAG_expose_natives_as == NULL) break;
if (strlen(FLAG_expose_natives_as) == 0) break;
HandleScope scope(isolate());
Handle<String> natives_key =
factory()->InternalizeUtf8String(FLAG_expose_natives_as);
uint32_t dummy_index;
if (natives_key->AsArrayIndex(&dummy_index)) break;
Handle<Object> utils = isolate()->natives_utils_object();
Handle<JSObject> global = isolate()->global_object();
JSObject::AddProperty(global, natives_key, utils, DONT_ENUM);
break;
}
}
// The utils object can be removed for cases that reach this point.
native_context()->set_natives_utils_object(heap()->undefined_value());
}
void Bootstrapper::ExportFromRuntime(Isolate* isolate,
Handle<JSObject> container) {
Factory* factory = isolate->factory();
HandleScope scope(isolate);
Handle<Context> native_context = isolate->native_context();
#define EXPORT_PRIVATE_SYMBOL(NAME) \
Handle<String> NAME##_name = factory->NewStringFromAsciiChecked(#NAME); \
JSObject::AddProperty(container, NAME##_name, factory->NAME(), NONE);
PRIVATE_SYMBOL_LIST(EXPORT_PRIVATE_SYMBOL)
#undef EXPORT_PRIVATE_SYMBOL
#define EXPORT_PUBLIC_SYMBOL(NAME, DESCRIPTION) \
Handle<String> NAME##_name = factory->NewStringFromAsciiChecked(#NAME); \
JSObject::AddProperty(container, NAME##_name, factory->NAME(), NONE);
PUBLIC_SYMBOL_LIST(EXPORT_PUBLIC_SYMBOL)
WELL_KNOWN_SYMBOL_LIST(EXPORT_PUBLIC_SYMBOL)
#undef EXPORT_PUBLIC_SYMBOL
{
Handle<JSFunction> to_string = InstallFunction(
container, "object_to_string", JS_OBJECT_TYPE, JSObject::kHeaderSize,
MaybeHandle<JSObject>(), Builtins::kObjectProtoToString);
to_string->shared()->set_internal_formal_parameter_count(0);
to_string->shared()->set_length(0);
native_context->set_object_to_string(*to_string);
}
Handle<JSObject> iterator_prototype(
native_context->initial_iterator_prototype());
JSObject::AddProperty(container,
factory->InternalizeUtf8String("IteratorPrototype"),
iterator_prototype, NONE);
{
PrototypeIterator iter(native_context->sloppy_generator_function_map());
Handle<JSObject> generator_function_prototype(iter.GetCurrent<JSObject>());
JSObject::AddProperty(
container, factory->InternalizeUtf8String("GeneratorFunctionPrototype"),
generator_function_prototype, NONE);
static const bool kUseStrictFunctionMap = true;
Handle<JSFunction> generator_function_function = InstallFunction(
container, "GeneratorFunction", JS_FUNCTION_TYPE, JSFunction::kSize,
generator_function_prototype, Builtins::kGeneratorFunctionConstructor,
kUseStrictFunctionMap);
generator_function_function->set_prototype_or_initial_map(
native_context->sloppy_generator_function_map());
generator_function_function->shared()->DontAdaptArguments();
generator_function_function->shared()->SetConstructStub(
*isolate->builtins()->GeneratorFunctionConstructor());
generator_function_function->shared()->set_length(1);
InstallWithIntrinsicDefaultProto(
isolate, generator_function_function,
Context::GENERATOR_FUNCTION_FUNCTION_INDEX);
JSObject::ForceSetPrototype(generator_function_function,
isolate->function_function());
JSObject::AddProperty(
generator_function_prototype, factory->constructor_string(),
generator_function_function,
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
native_context->sloppy_generator_function_map()->SetConstructor(
*generator_function_function);
native_context->strict_generator_function_map()->SetConstructor(
*generator_function_function);
}
{ // -- F i x e d A r r a y I t e r a t o r
int size = JSFixedArrayIterator::kHeaderSize +
JSFixedArrayIterator::kInObjectPropertyCount * kPointerSize;
Handle<Map> map = factory->NewMap(JS_FIXED_ARRAY_ITERATOR_TYPE, size);
Map::SetPrototype(map, iterator_prototype);
Map::EnsureDescriptorSlack(map,
JSFixedArrayIterator::kInObjectPropertyCount);
map->SetInObjectProperties(JSFixedArrayIterator::kInObjectPropertyCount);
map->SetConstructor(native_context->object_function());
{ // next
DataDescriptor d(factory->next_string(), JSFixedArrayIterator::kNextIndex,
DONT_ENUM, Representation::Tagged());
map->AppendDescriptor(&d);
}
native_context->set_fixed_array_iterator_map(*map);
}
{ // -- S e t I t e r a t o r
Handle<JSObject> set_iterator_prototype =
isolate->factory()->NewJSObject(isolate->object_function(), TENURED);
JSObject::ForceSetPrototype(set_iterator_prototype, iterator_prototype);
Handle<JSFunction> set_iterator_function = InstallFunction(
container, "SetIterator", JS_SET_ITERATOR_TYPE, JSSetIterator::kSize,
set_iterator_prototype, Builtins::kIllegal);
native_context->set_set_iterator_map(set_iterator_function->initial_map());
}
{ // -- M a p I t e r a t o r
Handle<JSObject> map_iterator_prototype =
isolate->factory()->NewJSObject(isolate->object_function(), TENURED);
JSObject::ForceSetPrototype(map_iterator_prototype, iterator_prototype);
Handle<JSFunction> map_iterator_function = InstallFunction(
container, "MapIterator", JS_MAP_ITERATOR_TYPE, JSMapIterator::kSize,
map_iterator_prototype, Builtins::kIllegal);
native_context->set_map_iterator_map(map_iterator_function->initial_map());
}
{ // -- S c r i p t
// Builtin functions for Script.
Handle<JSFunction> script_fun = InstallFunction(
container, "Script", JS_VALUE_TYPE, JSValue::kSize,
isolate->initial_object_prototype(), Builtins::kUnsupportedThrower);
Handle<JSObject> prototype =
factory->NewJSObject(isolate->object_function(), TENURED);
Accessors::FunctionSetPrototype(script_fun, prototype).Assert();
native_context->set_script_function(*script_fun);
Handle<Map> script_map = Handle<Map>(script_fun->initial_map());
Map::EnsureDescriptorSlack(script_map, 15);
PropertyAttributes attribs =
static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY);
Handle<AccessorInfo> script_column =
Accessors::ScriptColumnOffsetInfo(isolate, attribs);
{
AccessorConstantDescriptor d(
Handle<Name>(Name::cast(script_column->name())), script_column,
attribs);
script_map->AppendDescriptor(&d);
}
Handle<AccessorInfo> script_id = Accessors::ScriptIdInfo(isolate, attribs);
{
AccessorConstantDescriptor d(Handle<Name>(Name::cast(script_id->name())),
script_id, attribs);
script_map->AppendDescriptor(&d);
}
Handle<AccessorInfo> script_name =
Accessors::ScriptNameInfo(isolate, attribs);
{
AccessorConstantDescriptor d(
Handle<Name>(Name::cast(script_name->name())), script_name, attribs);
script_map->AppendDescriptor(&d);
}
Handle<AccessorInfo> script_line =
Accessors::ScriptLineOffsetInfo(isolate, attribs);
{
AccessorConstantDescriptor d(
Handle<Name>(Name::cast(script_line->name())), script_line, attribs);
script_map->AppendDescriptor(&d);
}
Handle<AccessorInfo> script_source =
Accessors::ScriptSourceInfo(isolate, attribs);
{
AccessorConstantDescriptor d(
Handle<Name>(Name::cast(script_source->name())), script_source,
attribs);
script_map->AppendDescriptor(&d);
}
Handle<AccessorInfo> script_type =
Accessors::ScriptTypeInfo(isolate, attribs);
{
AccessorConstantDescriptor d(
Handle<Name>(Name::cast(script_type->name())), script_type, attribs);
script_map->AppendDescriptor(&d);
}
Handle<AccessorInfo> script_compilation_type =
Accessors::ScriptCompilationTypeInfo(isolate, attribs);
{
AccessorConstantDescriptor d(
Handle<Name>(Name::cast(script_compilation_type->name())),
script_compilation_type, attribs);
script_map->AppendDescriptor(&d);
}
Handle<AccessorInfo> script_context_data =
Accessors::ScriptContextDataInfo(isolate, attribs);
{
AccessorConstantDescriptor d(
Handle<Name>(Name::cast(script_context_data->name())),
script_context_data, attribs);
script_map->AppendDescriptor(&d);
}
Handle<AccessorInfo> script_eval_from_script =
Accessors::ScriptEvalFromScriptInfo(isolate, attribs);
{
AccessorConstantDescriptor d(
Handle<Name>(Name::cast(script_eval_from_script->name())),
script_eval_from_script, attribs);
script_map->AppendDescriptor(&d);
}
Handle<AccessorInfo> script_eval_from_script_position =
Accessors::ScriptEvalFromScriptPositionInfo(isolate, attribs);
{
AccessorConstantDescriptor d(
Handle<Name>(Name::cast(script_eval_from_script_position->name())),
script_eval_from_script_position, attribs);
script_map->AppendDescriptor(&d);
}
Handle<AccessorInfo> script_eval_from_function_name =
Accessors::ScriptEvalFromFunctionNameInfo(isolate, attribs);
{
AccessorConstantDescriptor d(
Handle<Name>(Name::cast(script_eval_from_function_name->name())),
script_eval_from_function_name, attribs);
script_map->AppendDescriptor(&d);
}
Handle<AccessorInfo> script_source_url =
Accessors::ScriptSourceUrlInfo(isolate, attribs);
{
AccessorConstantDescriptor d(
Handle<Name>(Name::cast(script_source_url->name())),
script_source_url, attribs);
script_map->AppendDescriptor(&d);
}
Handle<AccessorInfo> script_source_mapping_url =
Accessors::ScriptSourceMappingUrlInfo(isolate, attribs);
{
AccessorConstantDescriptor d(
Handle<Name>(Name::cast(script_source_mapping_url->name())),
script_source_mapping_url, attribs);
script_map->AppendDescriptor(&d);
}
{
PrototypeIterator iter(native_context->sloppy_async_function_map());
Handle<JSObject> async_function_prototype(iter.GetCurrent<JSObject>());
static const bool kUseStrictFunctionMap = true;
Handle<JSFunction> async_function_constructor = InstallFunction(
container, "AsyncFunction", JS_FUNCTION_TYPE, JSFunction::kSize,
async_function_prototype, Builtins::kAsyncFunctionConstructor,
kUseStrictFunctionMap);
async_function_constructor->shared()->DontAdaptArguments();
async_function_constructor->shared()->SetConstructStub(
*isolate->builtins()->AsyncFunctionConstructor());
async_function_constructor->shared()->set_length(1);
InstallWithIntrinsicDefaultProto(isolate, async_function_constructor,
Context::ASYNC_FUNCTION_FUNCTION_INDEX);
JSObject::ForceSetPrototype(async_function_constructor,
isolate->function_function());
JSObject::AddProperty(
async_function_prototype, factory->constructor_string(),
async_function_constructor,
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
JSFunction::SetPrototype(async_function_constructor,
async_function_prototype);
Handle<JSFunction> async_function_next =
SimpleInstallFunction(container, "AsyncFunctionNext",
Builtins::kGeneratorPrototypeNext, 1, true);
Handle<JSFunction> async_function_throw =
SimpleInstallFunction(container, "AsyncFunctionThrow",
Builtins::kGeneratorPrototypeThrow, 1, true);
async_function_next->shared()->set_native(false);
async_function_throw->shared()->set_native(false);
}
}
{ // -- C a l l S i t e
// Builtin functions for CallSite.
// CallSites are a special case; the constructor is for our private use
// only, therefore we set it up as a builtin that throws. Internally, we use
// CallSiteUtils::Construct to create CallSite objects.
Handle<JSFunction> callsite_fun = InstallFunction(
container, "CallSite", JS_OBJECT_TYPE, JSObject::kHeaderSize,
isolate->initial_object_prototype(), Builtins::kUnsupportedThrower);
callsite_fun->shared()->DontAdaptArguments();
isolate->native_context()->set_callsite_function(*callsite_fun);
{
Handle<JSObject> proto =
factory->NewJSObject(isolate->object_function(), TENURED);
JSObject::AddProperty(proto, factory->constructor_string(), callsite_fun,
DONT_ENUM);
struct FunctionInfo {
const char* name;
Builtins::Name id;
};
FunctionInfo infos[] = {
{"getColumnNumber", Builtins::kCallSitePrototypeGetColumnNumber},
{"getEvalOrigin", Builtins::kCallSitePrototypeGetEvalOrigin},
{"getFileName", Builtins::kCallSitePrototypeGetFileName},
{"getFunction", Builtins::kCallSitePrototypeGetFunction},
{"getFunctionName", Builtins::kCallSitePrototypeGetFunctionName},
{"getLineNumber", Builtins::kCallSitePrototypeGetLineNumber},
{"getMethodName", Builtins::kCallSitePrototypeGetMethodName},
{"getPosition", Builtins::kCallSitePrototypeGetPosition},
{"getScriptNameOrSourceURL",
Builtins::kCallSitePrototypeGetScriptNameOrSourceURL},
{"getThis", Builtins::kCallSitePrototypeGetThis},
{"getTypeName", Builtins::kCallSitePrototypeGetTypeName},
{"isConstructor", Builtins::kCallSitePrototypeIsConstructor},
{"isEval", Builtins::kCallSitePrototypeIsEval},
{"isNative", Builtins::kCallSitePrototypeIsNative},
{"isToplevel", Builtins::kCallSitePrototypeIsToplevel},
{"toString", Builtins::kCallSitePrototypeToString}};
PropertyAttributes attrs =
static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY);
Handle<JSFunction> fun;
for (const FunctionInfo& info : infos) {
SimpleInstallFunction(proto, info.name, info.id, 0, true, attrs);
}
Accessors::FunctionSetPrototype(callsite_fun, proto).Assert();
}
}
}
void Bootstrapper::ExportExperimentalFromRuntime(Isolate* isolate,
Handle<JSObject> container) {
HandleScope scope(isolate);
#ifdef V8_I18N_SUPPORT
#define INITIALIZE_FLAG(FLAG) \
{ \
Handle<String> name = \
isolate->factory()->NewStringFromAsciiChecked(#FLAG); \
JSObject::AddProperty(container, name, \
isolate->factory()->ToBoolean(FLAG), NONE); \
}
#undef INITIALIZE_FLAG
#endif
}
#define EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(id) \
void Genesis::InitializeGlobal_##id() {}
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_do_expressions)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_regexp_lookbehind)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_regexp_named_captures)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_regexp_property)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_function_sent)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_tailcalls)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_string_padding)
#ifdef V8_I18N_SUPPORT
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(datetime_format_to_parts)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(icu_case_mapping)
#endif
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_async_await)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_restrictive_generators)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_trailing_commas)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_class_fields)
void InstallPublicSymbol(Factory* factory, Handle<Context> native_context,
const char* name, Handle<Symbol> value) {
Handle<JSGlobalObject> global(
JSGlobalObject::cast(native_context->global_object()));
Handle<String> symbol_string = factory->InternalizeUtf8String("Symbol");
Handle<JSObject> symbol = Handle<JSObject>::cast(
JSObject::GetProperty(global, symbol_string).ToHandleChecked());
Handle<String> name_string = factory->InternalizeUtf8String(name);
PropertyAttributes attributes =
static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY);
JSObject::AddProperty(symbol, name_string, value, attributes);
}
void Genesis::InitializeGlobal_harmony_sharedarraybuffer() {
if (!FLAG_harmony_sharedarraybuffer) return;
Handle<JSGlobalObject> global(native_context()->global_object());
Isolate* isolate = global->GetIsolate();
Factory* factory = isolate->factory();
Handle<JSFunction> shared_array_buffer_fun =
InstallArrayBuffer(global, "SharedArrayBuffer",
Builtins::kSharedArrayBufferPrototypeGetByteLength,
BuiltinFunctionId::kSharedArrayBufferByteLength);
native_context()->set_shared_array_buffer_fun(*shared_array_buffer_fun);
Handle<String> name = factory->InternalizeUtf8String("Atomics");
Handle<JSFunction> cons = factory->NewFunction(name);
JSFunction::SetInstancePrototype(
cons,
Handle<Object>(native_context()->initial_object_prototype(), isolate));
Handle<JSObject> atomics_object = factory->NewJSObject(cons, TENURED);
DCHECK(atomics_object->IsJSObject());
JSObject::AddProperty(global, name, atomics_object, DONT_ENUM);
SimpleInstallFunction(atomics_object, factory->InternalizeUtf8String("load"),
Builtins::kAtomicsLoad, 2, true);
SimpleInstallFunction(atomics_object, factory->InternalizeUtf8String("store"),
Builtins::kAtomicsStore, 3, true);
}
void Genesis::InitializeGlobal_harmony_simd() {
if (!FLAG_harmony_simd) return;
Handle<JSGlobalObject> global(
JSGlobalObject::cast(native_context()->global_object()));
Isolate* isolate = global->GetIsolate();
Factory* factory = isolate->factory();
Handle<String> name = factory->InternalizeUtf8String("SIMD");
Handle<JSFunction> cons = factory->NewFunction(name);
JSFunction::SetInstancePrototype(
cons,
Handle<Object>(native_context()->initial_object_prototype(), isolate));
cons->shared()->set_instance_class_name(*name);
Handle<JSObject> simd_object = factory->NewJSObject(cons, TENURED);
DCHECK(simd_object->IsJSObject());
JSObject::AddProperty(global, name, simd_object, DONT_ENUM);
// Install SIMD type functions. Set the instance class names since
// InstallFunction only does this when we install on the JSGlobalObject.
#define SIMD128_INSTALL_FUNCTION(TYPE, Type, type, lane_count, lane_type) \
Handle<JSFunction> type##_function = InstallFunction( \
simd_object, #Type, JS_VALUE_TYPE, JSValue::kSize, \
isolate->initial_object_prototype(), Builtins::kIllegal); \
native_context()->set_##type##_function(*type##_function); \
type##_function->shared()->set_instance_class_name(*factory->Type##_string());
SIMD128_TYPES(SIMD128_INSTALL_FUNCTION)
#undef SIMD128_INSTALL_FUNCTION
}
void Genesis::InitializeGlobal_harmony_array_prototype_values() {
if (!FLAG_harmony_array_prototype_values) return;
Handle<JSFunction> array_constructor(native_context()->array_function());
Handle<JSObject> array_prototype(
JSObject::cast(array_constructor->instance_prototype()));
Handle<Object> values_iterator =
JSObject::GetProperty(array_prototype, factory()->iterator_symbol())
.ToHandleChecked();
DCHECK(values_iterator->IsJSFunction());
JSObject::AddProperty(array_prototype, factory()->values_string(),
values_iterator, DONT_ENUM);
Handle<Object> unscopables =
JSObject::GetProperty(array_prototype, factory()->unscopables_symbol())
.ToHandleChecked();
DCHECK(unscopables->IsJSObject());
JSObject::AddProperty(Handle<JSObject>::cast(unscopables),
factory()->values_string(), factory()->true_value(),
NONE);
}
Handle<JSFunction> Genesis::InstallArrayBuffer(Handle<JSObject> target,
const char* name,
Builtins::Name call,
BuiltinFunctionId id) {
// Create the %ArrayBufferPrototype%
// Setup the {prototype} with the given {name} for @@toStringTag.
Handle<JSObject> prototype =
factory()->NewJSObject(isolate()->object_function(), TENURED);
JSObject::AddProperty(prototype, factory()->to_string_tag_symbol(),
factory()->NewStringFromAsciiChecked(name),
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
// Allocate the constructor with the given {prototype}.
Handle<JSFunction> array_buffer_fun =
InstallFunction(target, name, JS_ARRAY_BUFFER_TYPE,
JSArrayBuffer::kSizeWithInternalFields, prototype,
Builtins::kArrayBufferConstructor);
array_buffer_fun->shared()->SetConstructStub(
*isolate()->builtins()->ArrayBufferConstructor_ConstructStub());
array_buffer_fun->shared()->DontAdaptArguments();
array_buffer_fun->shared()->set_length(1);
// Install the "constructor" property on the {prototype}.
JSObject::AddProperty(prototype, factory()->constructor_string(),
array_buffer_fun, DONT_ENUM);
SimpleInstallFunction(array_buffer_fun, factory()->isView_string(),
Builtins::kArrayBufferIsView, 1, true);
// Install the "byteLength" getter on the {prototype}.
SimpleInstallGetter(prototype, factory()->byte_length_string(), call, false,
id);
return array_buffer_fun;
}
Handle<JSFunction> Genesis::InstallInternalArray(Handle<JSObject> target,
const char* name,
ElementsKind elements_kind) {
// --- I n t e r n a l A r r a y ---
// An array constructor on the builtins object that works like
// the public Array constructor, except that its prototype
// doesn't inherit from Object.prototype.
// To be used only for internal work by builtins. Instances
// must not be leaked to user code.
Handle<JSObject> prototype =
factory()->NewJSObject(isolate()->object_function(), TENURED);
Handle<JSFunction> array_function =
InstallFunction(target, name, JS_ARRAY_TYPE, JSArray::kSize, prototype,
Builtins::kInternalArrayCode);
InternalArrayConstructorStub internal_array_constructor_stub(isolate());
Handle<Code> code = internal_array_constructor_stub.GetCode();
array_function->shared()->SetConstructStub(*code);
array_function->shared()->DontAdaptArguments();
Handle<Map> original_map(array_function->initial_map());
Handle<Map> initial_map = Map::Copy(original_map, "InternalArray");
initial_map->set_elements_kind(elements_kind);
JSFunction::SetInitialMap(array_function, initial_map, prototype);
// Make "length" magic on instances.
Map::EnsureDescriptorSlack(initial_map, 1);
PropertyAttributes attribs = static_cast<PropertyAttributes>(
DONT_ENUM | DONT_DELETE);
Handle<AccessorInfo> array_length =
Accessors::ArrayLengthInfo(isolate(), attribs);
{ // Add length.
AccessorConstantDescriptor d(Handle<Name>(Name::cast(array_length->name())),
array_length, attribs);
initial_map->AppendDescriptor(&d);
}
return array_function;
}
bool Genesis::InstallNatives(GlobalContextType context_type) {
HandleScope scope(isolate());
// Set up the utils object as shared container between native scripts.
Handle<JSObject> utils = factory()->NewJSObject(isolate()->object_function());
JSObject::NormalizeProperties(utils, CLEAR_INOBJECT_PROPERTIES, 16,
"utils container for native scripts");
native_context()->set_natives_utils_object(*utils);
// Set up the extras utils object as a shared container between native
// scripts and extras. (Extras consume things added there by native scripts.)
Handle<JSObject> extras_utils =
factory()->NewJSObject(isolate()->object_function());
native_context()->set_extras_utils_object(*extras_utils);
InstallInternalArray(extras_utils, "InternalPackedArray", FAST_ELEMENTS);
int builtin_index = Natives::GetDebuggerCount();
// Only run prologue.js and runtime.js at this point.
DCHECK_EQ(builtin_index, Natives::GetIndex("prologue"));
if (!Bootstrapper::CompileBuiltin(isolate(), builtin_index++)) return false;
DCHECK_EQ(builtin_index, Natives::GetIndex("runtime"));
if (!Bootstrapper::CompileBuiltin(isolate(), builtin_index++)) return false;
{
// Builtin function for OpaqueReference -- a JSValue-based object,
// that keeps its field isolated from JavaScript code. It may store
// objects, that JavaScript code may not access.
Handle<JSFunction> opaque_reference_fun = factory()->NewFunction(
factory()->empty_string(), isolate()->builtins()->Illegal(),
isolate()->initial_object_prototype(), JS_VALUE_TYPE, JSValue::kSize);
Handle<JSObject> prototype =
factory()->NewJSObject(isolate()->object_function(), TENURED);
Accessors::FunctionSetPrototype(opaque_reference_fun, prototype).Assert();
native_context()->set_opaque_reference_function(*opaque_reference_fun);
}
// InternalArrays should not use Smi-Only array optimizations. There are too
// many places in the C++ runtime code (e.g. RegEx) that assume that
// elements in InternalArrays can be set to non-Smi values without going
// through a common bottleneck that would make the SMI_ONLY -> FAST_ELEMENT
// transition easy to trap. Moreover, they rarely are smi-only.
{
HandleScope scope(isolate());
Handle<JSObject> utils =
Handle<JSObject>::cast(isolate()->natives_utils_object());
Handle<JSFunction> array_function =
InstallInternalArray(utils, "InternalArray", FAST_HOLEY_ELEMENTS);
native_context()->set_internal_array_function(*array_function);
InstallInternalArray(utils, "InternalPackedArray", FAST_ELEMENTS);
}
// Run the rest of the native scripts.
while (builtin_index < Natives::GetBuiltinsCount()) {
if (!Bootstrapper::CompileBuiltin(isolate(), builtin_index++)) return false;
}
if (!CallUtilsFunction(isolate(), "PostNatives")) return false;
auto fast_template_instantiations_cache = isolate()->factory()->NewFixedArray(
TemplateInfo::kFastTemplateInstantiationsCacheSize);
native_context()->set_fast_template_instantiations_cache(
*fast_template_instantiations_cache);
auto slow_template_instantiations_cache = UnseededNumberDictionary::New(
isolate(), ApiNatives::kInitialFunctionCacheSize);
native_context()->set_slow_template_instantiations_cache(
*slow_template_instantiations_cache);
// Store the map for the %ObjectPrototype% after the natives has been compiled
// and the Object function has been set up.
Handle<JSFunction> object_function(native_context()->object_function());
DCHECK(JSObject::cast(object_function->initial_map()->prototype())
->HasFastProperties());
native_context()->set_object_function_prototype_map(
HeapObject::cast(object_function->initial_map()->prototype())->map());
// Set up the map for Object.create(null) instances.
Handle<Map> slow_object_with_null_prototype_map =
Map::CopyInitialMap(handle(object_function->initial_map(), isolate()));
slow_object_with_null_prototype_map->set_dictionary_map(true);
Map::SetPrototype(slow_object_with_null_prototype_map,
isolate()->factory()->null_value());
native_context()->set_slow_object_with_null_prototype_map(
*slow_object_with_null_prototype_map);
// Store the map for the %StringPrototype% after the natives has been compiled
// and the String function has been set up.
Handle<JSFunction> string_function(native_context()->string_function());
DCHECK(JSObject::cast(
string_function->initial_map()->prototype())->HasFastProperties());
native_context()->set_string_function_prototype_map(
HeapObject::cast(string_function->initial_map()->prototype())->map());
Handle<JSGlobalObject> global_object =
handle(native_context()->global_object());
// Install Global.decodeURI.
SimpleInstallFunction(global_object, "decodeURI", Builtins::kGlobalDecodeURI,
1, false, kGlobalDecodeURI);
// Install Global.decodeURIComponent.
SimpleInstallFunction(global_object, "decodeURIComponent",
Builtins::kGlobalDecodeURIComponent, 1, false,
kGlobalDecodeURIComponent);
// Install Global.encodeURI.
SimpleInstallFunction(global_object, "encodeURI", Builtins::kGlobalEncodeURI,
1, false, kGlobalEncodeURI);
// Install Global.encodeURIComponent.
SimpleInstallFunction(global_object, "encodeURIComponent",
Builtins::kGlobalEncodeURIComponent, 1, false,
kGlobalEncodeURIComponent);
// Install Global.escape.
SimpleInstallFunction(global_object, "escape", Builtins::kGlobalEscape, 1,
false, kGlobalEscape);
// Install Global.unescape.
SimpleInstallFunction(global_object, "unescape", Builtins::kGlobalUnescape, 1,
false, kGlobalUnescape);
// Install Global.eval.
{
Handle<JSFunction> eval =
SimpleInstallFunction(global_object, factory()->eval_string(),
Builtins::kGlobalEval, 1, false);
native_context()->set_global_eval_fun(*eval);
}
// Install Global.isFinite
SimpleInstallFunction(global_object, "isFinite", Builtins::kGlobalIsFinite, 1,
true, kGlobalIsFinite);
// Install Global.isNaN
SimpleInstallFunction(global_object, "isNaN", Builtins::kGlobalIsNaN, 1, true,
kGlobalIsNaN);
// Install Array.prototype.concat
{
Handle<JSFunction> array_constructor(native_context()->array_function());
Handle<JSObject> proto(JSObject::cast(array_constructor->prototype()));
Handle<JSFunction> concat =
InstallFunction(proto, "concat", JS_OBJECT_TYPE, JSObject::kHeaderSize,
MaybeHandle<JSObject>(), Builtins::kArrayConcat);
// Make sure that Array.prototype.concat appears to be compiled.
// The code will never be called, but inline caching for call will
// only work if it appears to be compiled.
concat->shared()->DontAdaptArguments();
DCHECK(concat->is_compiled());
// Set the lengths for the functions to satisfy ECMA-262.
concat->shared()->set_length(1);
}
// Install InternalArray.prototype.concat
{
Handle<JSFunction> array_constructor(
native_context()->internal_array_function());
Handle<JSObject> proto(JSObject::cast(array_constructor->prototype()));
Handle<JSFunction> concat =
InstallFunction(proto, "concat", JS_OBJECT_TYPE, JSObject::kHeaderSize,
MaybeHandle<JSObject>(), Builtins::kArrayConcat);
// Make sure that InternalArray.prototype.concat appears to be compiled.
// The code will never be called, but inline caching for call will
// only work if it appears to be compiled.
concat->shared()->DontAdaptArguments();
DCHECK(concat->is_compiled());
// Set the lengths for the functions to satisfy ECMA-262.
concat->shared()->set_length(1);
}
// Set up the Promise constructor.
{
Handle<String> key = factory()->Promise_string();
Handle<JSFunction> function = Handle<JSFunction>::cast(
JSReceiver::GetProperty(global_object, key).ToHandleChecked());
JSFunction::EnsureHasInitialMap(function);
function->initial_map()->set_instance_type(JS_PROMISE_TYPE);
function->shared()->SetConstructStub(
*isolate()->builtins()->JSBuiltinsConstructStub());
InstallWithIntrinsicDefaultProto(isolate(), function,
Context::PROMISE_FUNCTION_INDEX);
{
Handle<Code> code = handle(
isolate()->builtins()->builtin(Builtins::kPromiseResolveClosure),
isolate());
Handle<SharedFunctionInfo> info =
isolate()->factory()->NewSharedFunctionInfo(factory()->empty_string(),
code, false);
info->set_internal_formal_parameter_count(1);
info->set_length(1);
native_context()->set_promise_resolve_shared_fun(*info);
code = handle(
isolate()->builtins()->builtin(Builtins::kPromiseRejectClosure),
isolate());
info = isolate()->factory()->NewSharedFunctionInfo(
factory()->empty_string(), code, false);
info->set_internal_formal_parameter_count(2);
info->set_length(1);
native_context()->set_promise_reject_shared_fun(*info);
}
Handle<JSFunction> create_resolving_functions =
SimpleCreateFunction(isolate(), factory()->empty_string(),
Builtins::kCreateResolvingFunctions, 2, false);
native_context()->set_create_resolving_functions(
*create_resolving_functions);
}
InstallBuiltinFunctionIds();
// Create a map for accessor property descriptors (a variant of JSObject
// that predefines four properties get, set, configurable and enumerable).
{
// AccessorPropertyDescriptor initial map.
Handle<Map> map =
factory()->NewMap(JS_OBJECT_TYPE, JSAccessorPropertyDescriptor::kSize);
// Create the descriptor array for the property descriptor object.
Map::EnsureDescriptorSlack(map, 4);
{ // get
DataDescriptor d(factory()->get_string(),
JSAccessorPropertyDescriptor::kGetIndex, NONE,
Representation::Tagged());
map->AppendDescriptor(&d);
}
{ // set
DataDescriptor d(factory()->set_string(),
JSAccessorPropertyDescriptor::kSetIndex, NONE,
Representation::Tagged());
map->AppendDescriptor(&d);
}
{ // enumerable
DataDescriptor d(factory()->enumerable_string(),
JSAccessorPropertyDescriptor::kEnumerableIndex, NONE,
Representation::Tagged());
map->AppendDescriptor(&d);
}
{ // configurable
DataDescriptor d(factory()->configurable_string(),
JSAccessorPropertyDescriptor::kConfigurableIndex, NONE,
Representation::Tagged());
map->AppendDescriptor(&d);
}
Map::SetPrototype(map, isolate()->initial_object_prototype());
map->SetConstructor(native_context()->object_function());
map->SetInObjectProperties(4);
map->set_unused_property_fields(0);
native_context()->set_accessor_property_descriptor_map(*map);
}
// Create a map for data property descriptors (a variant of JSObject
// that predefines four properties value, writable, configurable and
// enumerable).
{
// DataPropertyDescriptor initial map.
Handle<Map> map =
factory()->NewMap(JS_OBJECT_TYPE, JSDataPropertyDescriptor::kSize);
// Create the descriptor array for the property descriptor object.
Map::EnsureDescriptorSlack(map, 4);
{ // value
DataDescriptor d(factory()->value_string(),
JSDataPropertyDescriptor::kValueIndex, NONE,
Representation::Tagged());
map->AppendDescriptor(&d);
}
{ // writable
DataDescriptor d(factory()->writable_string(),
JSDataPropertyDescriptor::kWritableIndex, NONE,
Representation::Tagged());
map->AppendDescriptor(&d);
}
{ // enumerable
DataDescriptor d(factory()->enumerable_string(),
JSDataPropertyDescriptor::kEnumerableIndex, NONE,
Representation::Tagged());
map->AppendDescriptor(&d);
}
{ // configurable
DataDescriptor d(factory()->configurable_string(),
JSDataPropertyDescriptor::kConfigurableIndex, NONE,
Representation::Tagged());
map->AppendDescriptor(&d);
}
Map::SetPrototype(map, isolate()->initial_object_prototype());
map->SetConstructor(native_context()->object_function());
map->SetInObjectProperties(4);
map->set_unused_property_fields(0);
native_context()->set_data_property_descriptor_map(*map);
}
// Create a constructor for RegExp results (a variant of Array that
// predefines the two properties index and match).
{
// RegExpResult initial map.
// Find global.Array.prototype to inherit from.
Handle<JSFunction> array_constructor(native_context()->array_function());
Handle<JSObject> array_prototype(
JSObject::cast(array_constructor->instance_prototype()));
// Add initial map.
Handle<Map> initial_map =
factory()->NewMap(JS_ARRAY_TYPE, JSRegExpResult::kSize);
initial_map->SetConstructor(*array_constructor);
// Set prototype on map.
initial_map->set_non_instance_prototype(false);
Map::SetPrototype(initial_map, array_prototype);
// Update map with length accessor from Array and add "index" and "input".
Map::EnsureDescriptorSlack(initial_map, 3);
{
JSFunction* array_function = native_context()->array_function();
Handle<DescriptorArray> array_descriptors(
array_function->initial_map()->instance_descriptors());
Handle<String> length = factory()->length_string();
int old = array_descriptors->SearchWithCache(
isolate(), *length, array_function->initial_map());
DCHECK(old != DescriptorArray::kNotFound);
AccessorConstantDescriptor desc(
length, handle(array_descriptors->GetValue(old), isolate()),
array_descriptors->GetDetails(old).attributes());
initial_map->AppendDescriptor(&desc);
}
{
DataDescriptor index_field(factory()->index_string(),
JSRegExpResult::kIndexIndex, NONE,
Representation::Tagged());
initial_map->AppendDescriptor(&index_field);
}
{
DataDescriptor input_field(factory()->input_string(),
JSRegExpResult::kInputIndex, NONE,
Representation::Tagged());
initial_map->AppendDescriptor(&input_field);
}
initial_map->SetInObjectProperties(2);
initial_map->set_unused_property_fields(0);
native_context()->set_regexp_result_map(*initial_map);
}
// Add @@iterator method to the arguments object maps.
{
PropertyAttributes attribs = DONT_ENUM;
Handle<AccessorInfo> arguments_iterator =
Accessors::ArgumentsIteratorInfo(isolate(), attribs);
{
AccessorConstantDescriptor d(factory()->iterator_symbol(),
arguments_iterator, attribs);
Handle<Map> map(native_context()->sloppy_arguments_map());
Map::EnsureDescriptorSlack(map, 1);
map->AppendDescriptor(&d);
}
{
AccessorConstantDescriptor d(factory()->iterator_symbol(),
arguments_iterator, attribs);
Handle<Map> map(native_context()->fast_aliased_arguments_map());
Map::EnsureDescriptorSlack(map, 1);
map->AppendDescriptor(&d);
}
{
AccessorConstantDescriptor d(factory()->iterator_symbol(),
arguments_iterator, attribs);
Handle<Map> map(native_context()->slow_aliased_arguments_map());
Map::EnsureDescriptorSlack(map, 1);
map->AppendDescriptor(&d);
}
{
AccessorConstantDescriptor d(factory()->iterator_symbol(),
arguments_iterator, attribs);
Handle<Map> map(native_context()->strict_arguments_map());
Map::EnsureDescriptorSlack(map, 1);
map->AppendDescriptor(&d);
}
}
return true;
}
bool Genesis::InstallExperimentalNatives() {
static const char* harmony_tailcalls_natives[] = {nullptr};
static const char* harmony_sharedarraybuffer_natives[] = {
"native harmony-atomics.js", NULL};
static const char* harmony_simd_natives[] = {"native harmony-simd.js",
nullptr};
static const char* harmony_do_expressions_natives[] = {nullptr};
static const char* harmony_regexp_lookbehind_natives[] = {nullptr};
static const char* harmony_regexp_named_captures_natives[] = {nullptr};
static const char* harmony_regexp_property_natives[] = {nullptr};
static const char* harmony_function_sent_natives[] = {nullptr};
static const char* harmony_array_prototype_values_natives[] = {nullptr};
static const char* harmony_string_padding_natives[] = {
"native harmony-string-padding.js", nullptr};
#ifdef V8_I18N_SUPPORT
static const char* icu_case_mapping_natives[] = {"native icu-case-mapping.js",
nullptr};
static const char* datetime_format_to_parts_natives[] = {
"native datetime-format-to-parts.js", nullptr};
#endif
static const char* harmony_async_await_natives[] = {nullptr};
static const char* harmony_restrictive_generators_natives[] = {nullptr};
static const char* harmony_trailing_commas_natives[] = {nullptr};
static const char* harmony_class_fields_natives[] = {nullptr};
for (int i = ExperimentalNatives::GetDebuggerCount();
i < ExperimentalNatives::GetBuiltinsCount(); i++) {
#define INSTALL_EXPERIMENTAL_NATIVES(id, desc) \
if (FLAG_##id) { \
for (size_t j = 0; id##_natives[j] != NULL; j++) { \
Vector<const char> script_name = ExperimentalNatives::GetScriptName(i); \
if (strncmp(script_name.start(), id##_natives[j], \
script_name.length()) == 0) { \
if (!Bootstrapper::CompileExperimentalBuiltin(isolate(), i)) { \
return false; \
} \
} \
} \
}
HARMONY_INPROGRESS(INSTALL_EXPERIMENTAL_NATIVES);
HARMONY_STAGED(INSTALL_EXPERIMENTAL_NATIVES);
HARMONY_SHIPPING(INSTALL_EXPERIMENTAL_NATIVES);
#undef INSTALL_EXPERIMENTAL_NATIVES
}
if (!CallUtilsFunction(isolate(), "PostExperimentals")) return false;
InstallExperimentalBuiltinFunctionIds();
return true;
}
bool Genesis::InstallExtraNatives() {
HandleScope scope(isolate());
Handle<JSObject> extras_binding =
factory()->NewJSObject(isolate()->object_function());
native_context()->set_extras_binding_object(*extras_binding);
for (int i = ExtraNatives::GetDebuggerCount();
i < ExtraNatives::GetBuiltinsCount(); i++) {
if (!Bootstrapper::CompileExtraBuiltin(isolate(), i)) return false;
}
return true;
}
bool Genesis::InstallExperimentalExtraNatives() {
for (int i = ExperimentalExtraNatives::GetDebuggerCount();
i < ExperimentalExtraNatives::GetBuiltinsCount(); i++) {
if (!Bootstrapper::CompileExperimentalExtraBuiltin(isolate(), i))
return false;
}
return true;
}
bool Genesis::InstallDebuggerNatives() {
for (int i = 0; i < Natives::GetDebuggerCount(); ++i) {
if (!Bootstrapper::CompileBuiltin(isolate(), i)) return false;
}
return CallUtilsFunction(isolate(), "PostDebug");
}
static void InstallBuiltinFunctionId(Handle<JSObject> holder,
const char* function_name,
BuiltinFunctionId id) {
Isolate* isolate = holder->GetIsolate();
Handle<Object> function_object =
JSReceiver::GetProperty(isolate, holder, function_name).ToHandleChecked();
Handle<JSFunction> function = Handle<JSFunction>::cast(function_object);
function->shared()->set_builtin_function_id(id);
}
#define INSTALL_BUILTIN_ID(holder_expr, fun_name, name) \
{ #holder_expr, #fun_name, k##name } \
,
void Genesis::InstallBuiltinFunctionIds() {
HandleScope scope(isolate());
struct BuiltinFunctionIds {
const char* holder_expr;
const char* fun_name;
BuiltinFunctionId id;
};
const BuiltinFunctionIds builtins[] = {
FUNCTIONS_WITH_ID_LIST(INSTALL_BUILTIN_ID)};
for (const BuiltinFunctionIds& builtin : builtins) {
Handle<JSObject> holder =
ResolveBuiltinIdHolder(native_context(), builtin.holder_expr);
InstallBuiltinFunctionId(holder, builtin.fun_name, builtin.id);
}
}
void Genesis::InstallExperimentalBuiltinFunctionIds() {
if (FLAG_harmony_sharedarraybuffer) {
struct BuiltinFunctionIds {
const char* holder_expr;
const char* fun_name;
BuiltinFunctionId id;
};
const BuiltinFunctionIds atomic_builtins[] = {
ATOMIC_FUNCTIONS_WITH_ID_LIST(INSTALL_BUILTIN_ID)};
for (const BuiltinFunctionIds& builtin : atomic_builtins) {
Handle<JSObject> holder =
ResolveBuiltinIdHolder(native_context(), builtin.holder_expr);
InstallBuiltinFunctionId(holder, builtin.fun_name, builtin.id);
}
}
}
#undef INSTALL_BUILTIN_ID
void Genesis::InitializeNormalizedMapCaches() {
Handle<NormalizedMapCache> cache = NormalizedMapCache::New(isolate());
native_context()->set_normalized_map_cache(*cache);
}
bool Bootstrapper::InstallExtensions(Handle<Context> native_context,
v8::ExtensionConfiguration* extensions) {
BootstrapperActive active(this);
SaveContext saved_context(isolate_);
isolate_->set_context(*native_context);
return Genesis::InstallExtensions(native_context, extensions) &&
Genesis::InstallSpecialObjects(native_context);
}
bool Genesis::InstallSpecialObjects(Handle<Context> native_context) {
Isolate* isolate = native_context->GetIsolate();
// Don't install extensions into the snapshot.
if (isolate->serializer_enabled()) return true;
Factory* factory = isolate->factory();
HandleScope scope(isolate);
Handle<JSGlobalObject> global(JSGlobalObject::cast(
native_context->global_object()));
Handle<JSObject> Error = isolate->error_function();
Handle<String> name =
factory->InternalizeOneByteString(STATIC_CHAR_VECTOR("stackTraceLimit"));
Handle<Smi> stack_trace_limit(Smi::FromInt(FLAG_stack_trace_limit), isolate);
JSObject::AddProperty(Error, name, stack_trace_limit, NONE);
// Expose the debug global object in global if a name for it is specified.
if (FLAG_expose_debug_as != NULL && strlen(FLAG_expose_debug_as) != 0) {
// If loading fails we just bail out without installing the
// debugger but without tanking the whole context.
Debug* debug = isolate->debug();
if (!debug->Load()) return true;
Handle<Context> debug_context = debug->debug_context();
// Set the security token for the debugger context to the same as
// the shell native context to allow calling between these (otherwise
// exposing debug global object doesn't make much sense).
debug_context->set_security_token(native_context->security_token());
Handle<String> debug_string =
factory->InternalizeUtf8String(FLAG_expose_debug_as);
uint32_t index;
if (debug_string->AsArrayIndex(&index)) return true;
Handle<Object> global_proxy(debug_context->global_proxy(), isolate);
JSObject::AddProperty(global, debug_string, global_proxy, DONT_ENUM);
}
WasmJs::Install(isolate, global);
return true;
}
static uint32_t Hash(RegisteredExtension* extension) {
return v8::internal::ComputePointerHash(extension);
}
Genesis::ExtensionStates::ExtensionStates() : map_(8) {}
Genesis::ExtensionTraversalState Genesis::ExtensionStates::get_state(
RegisteredExtension* extension) {
base::HashMap::Entry* entry = map_.Lookup(extension, Hash(extension));
if (entry == NULL) {
return UNVISITED;
}
return static_cast<ExtensionTraversalState>(
reinterpret_cast<intptr_t>(entry->value));
}
void Genesis::ExtensionStates::set_state(RegisteredExtension* extension,
ExtensionTraversalState state) {
map_.LookupOrInsert(extension, Hash(extension))->value =
reinterpret_cast<void*>(static_cast<intptr_t>(state));
}
bool Genesis::InstallExtensions(Handle<Context> native_context,
v8::ExtensionConfiguration* extensions) {
Isolate* isolate = native_context->GetIsolate();
ExtensionStates extension_states; // All extensions have state UNVISITED.
return InstallAutoExtensions(isolate, &extension_states) &&
(!FLAG_expose_free_buffer ||
InstallExtension(isolate, "v8/free-buffer", &extension_states)) &&
(!FLAG_expose_gc ||
InstallExtension(isolate, "v8/gc", &extension_states)) &&
(!FLAG_expose_externalize_string ||
InstallExtension(isolate, "v8/externalize", &extension_states)) &&
(!FLAG_gc_stats ||
InstallExtension(isolate, "v8/statistics", &extension_states)) &&
(!FLAG_expose_trigger_failure ||
InstallExtension(isolate, "v8/trigger-failure", &extension_states)) &&
(!FLAG_trace_ignition_dispatches ||
InstallExtension(isolate, "v8/ignition-statistics",
&extension_states)) &&
InstallRequestedExtensions(isolate, extensions, &extension_states);
}
bool Genesis::InstallAutoExtensions(Isolate* isolate,
ExtensionStates* extension_states) {
for (v8::RegisteredExtension* it = v8::RegisteredExtension::first_extension();
it != NULL;
it = it->next()) {
if (it->extension()->auto_enable() &&
!InstallExtension(isolate, it, extension_states)) {
return false;
}
}
return true;
}
bool Genesis::InstallRequestedExtensions(Isolate* isolate,
v8::ExtensionConfiguration* extensions,
ExtensionStates* extension_states) {
for (const char** it = extensions->begin(); it != extensions->end(); ++it) {
if (!InstallExtension(isolate, *it, extension_states)) return false;
}
return true;
}
// Installs a named extension. This methods is unoptimized and does
// not scale well if we want to support a large number of extensions.
bool Genesis::InstallExtension(Isolate* isolate,
const char* name,
ExtensionStates* extension_states) {
for (v8::RegisteredExtension* it = v8::RegisteredExtension::first_extension();
it != NULL;
it = it->next()) {
if (strcmp(name, it->extension()->name()) == 0) {
return InstallExtension(isolate, it, extension_states);
}
}
return Utils::ApiCheck(false,
"v8::Context::New()",
"Cannot find required extension");
}
bool Genesis::InstallExtension(Isolate* isolate,
v8::RegisteredExtension* current,
ExtensionStates* extension_states) {
HandleScope scope(isolate);
if (extension_states->get_state(current) == INSTALLED) return true;
// The current node has already been visited so there must be a
// cycle in the dependency graph; fail.
if (!Utils::ApiCheck(extension_states->get_state(current) != VISITED,
"v8::Context::New()",
"Circular extension dependency")) {
return false;
}
DCHECK(extension_states->get_state(current) == UNVISITED);
extension_states->set_state(current, VISITED);
v8::Extension* extension = current->extension();
// Install the extension's dependencies
for (int i = 0; i < extension->dependency_count(); i++) {
if (!InstallExtension(isolate,
extension->dependencies()[i],
extension_states)) {
return false;
}
}
// We do not expect this to throw an exception. Change this if it does.
bool result = CompileExtension(isolate, extension);
DCHECK(isolate->has_pending_exception() != result);
if (!result) {
// We print out the name of the extension that fail to install.
// When an error is thrown during bootstrapping we automatically print
// the line number at which this happened to the console in the isolate
// error throwing functionality.
base::OS::PrintError("Error installing extension '%s'.\n",
current->extension()->name());
isolate->clear_pending_exception();
}
extension_states->set_state(current, INSTALLED);
isolate->NotifyExtensionInstalled();
return result;
}
bool Genesis::ConfigureGlobalObjects(
v8::Local<v8::ObjectTemplate> global_proxy_template) {
Handle<JSObject> global_proxy(
JSObject::cast(native_context()->global_proxy()));
Handle<JSObject> global_object(
JSObject::cast(native_context()->global_object()));
if (!global_proxy_template.IsEmpty()) {
// Configure the global proxy object.
Handle<ObjectTemplateInfo> global_proxy_data =
v8::Utils::OpenHandle(*global_proxy_template);
if (!ConfigureApiObject(global_proxy, global_proxy_data)) return false;
// Configure the global object.
Handle<FunctionTemplateInfo> proxy_constructor(
FunctionTemplateInfo::cast(global_proxy_data->constructor()));
if (!proxy_constructor->prototype_template()->IsUndefined(isolate())) {
Handle<ObjectTemplateInfo> global_object_data(
ObjectTemplateInfo::cast(proxy_constructor->prototype_template()));
if (!ConfigureApiObject(global_object, global_object_data)) return false;
}
}
JSObject::ForceSetPrototype(global_proxy, global_object);
native_context()->set_initial_array_prototype(
JSArray::cast(native_context()->array_function()->prototype()));
native_context()->set_array_buffer_map(
native_context()->array_buffer_fun()->initial_map());
native_context()->set_js_map_map(
native_context()->js_map_fun()->initial_map());
native_context()->set_js_set_map(
native_context()->js_set_fun()->initial_map());
return true;
}
bool Genesis::ConfigureApiObject(Handle<JSObject> object,
Handle<ObjectTemplateInfo> object_template) {
DCHECK(!object_template.is_null());
DCHECK(FunctionTemplateInfo::cast(object_template->constructor())
->IsTemplateFor(object->map()));;
MaybeHandle<JSObject> maybe_obj =
ApiNatives::InstantiateObject(object_template);
Handle<JSObject> obj;
if (!maybe_obj.ToHandle(&obj)) {
DCHECK(isolate()->has_pending_exception());
isolate()->clear_pending_exception();
return false;
}
TransferObject(obj, object);
return true;
}
void Genesis::TransferNamedProperties(Handle<JSObject> from,
Handle<JSObject> to) {
// If JSObject::AddProperty asserts due to already existing property,
// it is likely due to both global objects sharing property name(s).
// Merging those two global objects is impossible.
// The global template must not create properties that already exist
// in the snapshotted global object.
if (from->HasFastProperties()) {
Handle<DescriptorArray> descs =
Handle<DescriptorArray>(from->map()->instance_descriptors());
for (int i = 0; i < from->map()->NumberOfOwnDescriptors(); i++) {
PropertyDetails details = descs->GetDetails(i);
switch (details.type()) {
case DATA: {
HandleScope inner(isolate());
Handle<Name> key = Handle<Name>(descs->GetKey(i));
FieldIndex index = FieldIndex::ForDescriptor(from->map(), i);
DCHECK(!descs->GetDetails(i).representation().IsDouble());
Handle<Object> value = Handle<Object>(from->RawFastPropertyAt(index),
isolate());
JSObject::AddProperty(to, key, value, details.attributes());
break;
}
case DATA_CONSTANT: {
HandleScope inner(isolate());
Handle<Name> key = Handle<Name>(descs->GetKey(i));
Handle<Object> constant(descs->GetConstant(i), isolate());
JSObject::AddProperty(to, key, constant, details.attributes());
break;
}
case ACCESSOR:
UNREACHABLE();
case ACCESSOR_CONSTANT: {
Handle<Name> key(descs->GetKey(i));
LookupIterator it(to, key, LookupIterator::OWN_SKIP_INTERCEPTOR);
CHECK_NE(LookupIterator::ACCESS_CHECK, it.state());
// If the property is already there we skip it
if (it.IsFound()) continue;
HandleScope inner(isolate());
DCHECK(!to->HasFastProperties());
// Add to dictionary.
Handle<Object> callbacks(descs->GetCallbacksObject(i), isolate());
PropertyDetails d(details.attributes(), ACCESSOR_CONSTANT, i + 1,
PropertyCellType::kMutable);
JSObject::SetNormalizedProperty(to, key, callbacks, d);
break;
}
}
}
} else if (from->IsJSGlobalObject()) {
Handle<GlobalDictionary> properties =
Handle<GlobalDictionary>(from->global_dictionary());
int capacity = properties->Capacity();
for (int i = 0; i < capacity; i++) {
Object* raw_key(properties->KeyAt(i));
if (properties->IsKey(isolate(), raw_key)) {
DCHECK(raw_key->IsName());
// If the property is already there we skip it.
Handle<Name> key(Name::cast(raw_key));
LookupIterator it(to, key, LookupIterator::OWN_SKIP_INTERCEPTOR);
CHECK_NE(LookupIterator::ACCESS_CHECK, it.state());
if (it.IsFound()) continue;
// Set the property.
DCHECK(properties->ValueAt(i)->IsPropertyCell());
Handle<PropertyCell> cell(PropertyCell::cast(properties->ValueAt(i)));
Handle<Object> value(cell->value(), isolate());
if (value->IsTheHole(isolate())) continue;
PropertyDetails details = cell->property_details();
DCHECK_EQ(kData, details.kind());
JSObject::AddProperty(to, key, value, details.attributes());
}
}
} else {
Handle<NameDictionary> properties =
Handle<NameDictionary>(from->property_dictionary());
int capacity = properties->Capacity();
for (int i = 0; i < capacity; i++) {
Object* raw_key(properties->KeyAt(i));
if (properties->IsKey(isolate(), raw_key)) {
DCHECK(raw_key->IsName());
// If the property is already there we skip it.
Handle<Name> key(Name::cast(raw_key));
LookupIterator it(to, key, LookupIterator::OWN_SKIP_INTERCEPTOR);
CHECK_NE(LookupIterator::ACCESS_CHECK, it.state());
if (it.IsFound()) continue;
// Set the property.
Handle<Object> value = Handle<Object>(properties->ValueAt(i),
isolate());
DCHECK(!value->IsCell());
DCHECK(!value->IsTheHole(isolate()));
PropertyDetails details = properties->DetailsAt(i);
DCHECK_EQ(kData, details.kind());
JSObject::AddProperty(to, key, value, details.attributes());
}
}
}
}
void Genesis::TransferIndexedProperties(Handle<JSObject> from,
Handle<JSObject> to) {
// Cloning the elements array is sufficient.
Handle<FixedArray> from_elements =
Handle<FixedArray>(FixedArray::cast(from->elements()));
Handle<FixedArray> to_elements = factory()->CopyFixedArray(from_elements);
to->set_elements(*to_elements);
}
void Genesis::TransferObject(Handle<JSObject> from, Handle<JSObject> to) {
HandleScope outer(isolate());
DCHECK(!from->IsJSArray());
DCHECK(!to->IsJSArray());
TransferNamedProperties(from, to);
TransferIndexedProperties(from, to);
// Transfer the prototype (new map is needed).
Handle<Object> proto(from->map()->prototype(), isolate());
JSObject::ForceSetPrototype(to, proto);
}
void Genesis::MakeFunctionInstancePrototypeWritable() {
// The maps with writable prototype are created in CreateEmptyFunction
// and CreateStrictModeFunctionMaps respectively. Initially the maps are
// created with read-only prototype for JS builtins processing.
DCHECK(!sloppy_function_map_writable_prototype_.is_null());
DCHECK(!strict_function_map_writable_prototype_.is_null());
// Replace function instance maps to make prototype writable.
native_context()->set_sloppy_function_map(
*sloppy_function_map_writable_prototype_);
native_context()->set_strict_function_map(
*strict_function_map_writable_prototype_);
}
class NoTrackDoubleFieldsForSerializerScope {
public:
explicit NoTrackDoubleFieldsForSerializerScope(Isolate* isolate)
: flag_(FLAG_track_double_fields), enabled_(false) {
if (isolate->serializer_enabled()) {
// Disable tracking double fields because heap numbers treated as
// immutable by the serializer.
FLAG_track_double_fields = false;
enabled_ = true;
}
}
~NoTrackDoubleFieldsForSerializerScope() {
if (enabled_) {
FLAG_track_double_fields = flag_;
}
}
private:
bool flag_;
bool enabled_;
};
Genesis::Genesis(Isolate* isolate,
MaybeHandle<JSGlobalProxy> maybe_global_proxy,
v8::Local<v8::ObjectTemplate> global_proxy_template,
v8::ExtensionConfiguration* extensions,
size_t context_snapshot_index, GlobalContextType context_type)
: isolate_(isolate), active_(isolate->bootstrapper()) {
NoTrackDoubleFieldsForSerializerScope disable_scope(isolate);
result_ = Handle<Context>::null();
global_proxy_ = Handle<JSGlobalProxy>::null();
// Before creating the roots we must save the context and restore it
// on all function exits.
SaveContext saved_context(isolate);
// During genesis, the boilerplate for stack overflow won't work until the
// environment has been at least partially initialized. Add a stack check
// before entering JS code to catch overflow early.
StackLimitCheck check(isolate);
if (check.HasOverflowed()) {
isolate->StackOverflow();
return;
}
// The deserializer needs to hook up references to the global proxy.
// Create an uninitialized global proxy now if we don't have one
// and initialize it later in CreateNewGlobals.
Handle<JSGlobalProxy> global_proxy;
if (!maybe_global_proxy.ToHandle(&global_proxy)) {
const int internal_field_count =
!global_proxy_template.IsEmpty()
? global_proxy_template->InternalFieldCount()
: 0;
global_proxy = isolate->factory()->NewUninitializedJSGlobalProxy(
JSGlobalProxy::SizeWithInternalFields(internal_field_count));
}
// We can only de-serialize a context if the isolate was initialized from
// a snapshot. Otherwise we have to build the context from scratch.
// Also create a context from scratch to expose natives, if required by flag.
if (!isolate->initialized_from_snapshot() ||
!Snapshot::NewContextFromSnapshot(isolate, global_proxy,
context_snapshot_index)
.ToHandle(&native_context_)) {
native_context_ = Handle<Context>();
}
if (!native_context().is_null()) {
AddToWeakNativeContextList(*native_context());
isolate->set_context(*native_context());
isolate->counters()->contexts_created_by_snapshot()->Increment();
#if TRACE_MAPS
if (FLAG_trace_maps) {
Handle<JSFunction> object_fun = isolate->object_function();
PrintF("[TraceMap: InitialMap map= %p SFI= %d_Object ]\n",
reinterpret_cast<void*>(object_fun->initial_map()),
object_fun->shared()->unique_id());
Map::TraceAllTransitions(object_fun->initial_map());
}
#endif
Handle<JSGlobalObject> global_object =
CreateNewGlobals(global_proxy_template, global_proxy);
HookUpGlobalProxy(global_object, global_proxy);
HookUpGlobalObject(global_object);
if (!ConfigureGlobalObjects(global_proxy_template)) return;
} else {
// We get here if there was no context snapshot.
CreateRoots();
Handle<JSFunction> empty_function = CreateEmptyFunction(isolate);
CreateStrictModeFunctionMaps(empty_function);
CreateIteratorMaps(empty_function);
CreateAsyncFunctionMaps(empty_function);
Handle<JSGlobalObject> global_object =
CreateNewGlobals(global_proxy_template, global_proxy);
HookUpGlobalProxy(global_object, global_proxy);
InitializeGlobal(global_object, empty_function, context_type);
InitializeNormalizedMapCaches();
if (!InstallNatives(context_type)) return;
MakeFunctionInstancePrototypeWritable();
if (!InstallExtraNatives()) return;
if (!ConfigureGlobalObjects(global_proxy_template)) return;
isolate->counters()->contexts_created_from_scratch()->Increment();
// Re-initialize the counter because it got incremented during snapshot
// creation.
isolate->native_context()->set_errors_thrown(Smi::kZero);
}
// Install experimental natives. Do not include them into the
// snapshot as we should be able to turn them off at runtime. Re-installing
// them after they have already been deserialized would also fail.
if (context_type == FULL_CONTEXT) {
if (!isolate->serializer_enabled()) {
InitializeExperimentalGlobal();
if (!InstallExperimentalNatives()) return;
if (FLAG_experimental_extras) {
if (!InstallExperimentalExtraNatives()) return;
}
}
// The serializer cannot serialize typed arrays. Reset those typed arrays
// for each new context.
} else if (context_type == DEBUG_CONTEXT) {
DCHECK(!isolate->serializer_enabled());
InitializeExperimentalGlobal();
if (!InstallDebuggerNatives()) return;
}
ConfigureUtilsObject(context_type);
// Check that the script context table is empty except for the 'this' binding.
// We do not need script contexts for native scripts.
DCHECK_EQ(1, native_context()->script_context_table()->used());
result_ = native_context();
}
Genesis::Genesis(Isolate* isolate,
MaybeHandle<JSGlobalProxy> maybe_global_proxy,
v8::Local<v8::ObjectTemplate> global_proxy_template)
: isolate_(isolate), active_(isolate->bootstrapper()) {
NoTrackDoubleFieldsForSerializerScope disable_scope(isolate);
result_ = Handle<Context>::null();
global_proxy_ = Handle<JSGlobalProxy>::null();
// Before creating the roots we must save the context and restore it
// on all function exits.
SaveContext saved_context(isolate);
// During genesis, the boilerplate for stack overflow won't work until the
// environment has been at least partially initialized. Add a stack check
// before entering JS code to catch overflow early.
StackLimitCheck check(isolate);
if (check.HasOverflowed()) {
isolate->StackOverflow();
return;
}
const int proxy_size = JSGlobalProxy::SizeWithInternalFields(
global_proxy_template->InternalFieldCount());
Handle<JSGlobalProxy> global_proxy;
if (!maybe_global_proxy.ToHandle(&global_proxy)) {
global_proxy = factory()->NewUninitializedJSGlobalProxy(proxy_size);
}
// CreateNewGlobals.
Handle<ObjectTemplateInfo> global_proxy_data =
v8::Utils::OpenHandle(*global_proxy_template);
Handle<FunctionTemplateInfo> global_constructor(
FunctionTemplateInfo::cast(global_proxy_data->constructor()));
Handle<SharedFunctionInfo> shared =
FunctionTemplateInfo::GetOrCreateSharedFunctionInfo(isolate,
global_constructor);
Handle<Map> initial_map =
factory()->CreateSloppyFunctionMap(FUNCTION_WITH_WRITEABLE_PROTOTYPE);
Handle<JSFunction> global_proxy_function =
isolate->factory()->NewFunctionFromSharedFunctionInfo(
initial_map, shared, factory()->undefined_value());
DCHECK_EQ(global_proxy_data->internal_field_count(),
global_proxy_template->InternalFieldCount());
Handle<Map> global_proxy_map = isolate->factory()->NewMap(
JS_GLOBAL_PROXY_TYPE, proxy_size, FAST_HOLEY_SMI_ELEMENTS);
JSFunction::SetInitialMap(global_proxy_function, global_proxy_map,
factory()->null_value());
global_proxy_map->set_is_access_check_needed(true);
global_proxy_map->set_is_callable();
global_proxy_map->set_is_constructor(true);
global_proxy_map->set_has_hidden_prototype(true);
Handle<String> global_name = factory()->global_string();
global_proxy_function->shared()->set_instance_class_name(*global_name);
factory()->ReinitializeJSGlobalProxy(global_proxy, global_proxy_function);
// HookUpGlobalProxy.
global_proxy->set_native_context(heap()->null_value());
// DetachGlobal.
JSObject::ForceSetPrototype(global_proxy, factory()->null_value());
global_proxy_ = global_proxy;
}
// Support for thread preemption.
// Reserve space for statics needing saving and restoring.
int Bootstrapper::ArchiveSpacePerThread() {
return sizeof(NestingCounterType);
}
// Archive statics that are thread-local.
char* Bootstrapper::ArchiveState(char* to) {
*reinterpret_cast<NestingCounterType*>(to) = nesting_;
nesting_ = 0;
return to + sizeof(NestingCounterType);
}
// Restore statics that are thread-local.
char* Bootstrapper::RestoreState(char* from) {
nesting_ = *reinterpret_cast<NestingCounterType*>(from);
return from + sizeof(NestingCounterType);
}
// Called when the top-level V8 mutex is destroyed.
void Bootstrapper::FreeThreadResources() {
DCHECK(!IsActive());
}
} // namespace internal
} // namespace v8