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webkit / WebKit / 6ac1ae7345a9a50f3760d4fdf5f8c6512c4a9901 / . / Source / JavaScriptCore / runtime / JSGlobalObject.cpp
blob: 3ea30db9e2e4d538da8f232cf89b9e4c98237006 [file] [log] [blame]
/*
* Copyright (C) 2007-2020 Apple Inc. All rights reserved.
* Copyright (C) 2008 Cameron Zwarich (cwzwarich@uwaterloo.ca)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "JSGlobalObject.h"
#include "AggregateError.h"
#include "AggregateErrorConstructor.h"
#include "AggregateErrorPrototype.h"
#include "ArrayConstructor.h"
#include "ArrayIteratorPrototype.h"
#include "ArrayPrototype.h"
#include "AsyncFromSyncIteratorPrototype.h"
#include "AsyncFunctionConstructor.h"
#include "AsyncFunctionPrototype.h"
#include "AsyncGeneratorFunctionConstructor.h"
#include "AsyncGeneratorFunctionPrototype.h"
#include "AsyncGeneratorPrototype.h"
#include "AsyncIteratorPrototype.h"
#include "BigIntConstructor.h"
#include "BigIntObject.h"
#include "BigIntPrototype.h"
#include "BooleanConstructor.h"
#include "BooleanPrototype.h"
#include "BuiltinNames.h"
#include "CatchScope.h"
#include "ClonedArguments.h"
#include "CodeBlock.h"
#include "CodeBlockSetInlines.h"
#include "ConsoleObject.h"
#include "DateConstructor.h"
#include "DatePrototype.h"
#include "Debugger.h"
#include "DebuggerScope.h"
#include "DirectArguments.h"
#include "ErrorConstructor.h"
#include "ErrorPrototype.h"
#include "FunctionConstructor.h"
#include "FunctionPrototype.h"
#include "GeneratorFunctionConstructor.h"
#include "GeneratorFunctionPrototype.h"
#include "GeneratorPrototype.h"
#include "GetterSetter.h"
#include "HeapIterationScope.h"
#include "InspectorInstrumentationObject.h"
#include "IntlCollator.h"
#include "IntlCollatorPrototype.h"
#include "IntlDateTimeFormat.h"
#include "IntlDateTimeFormatPrototype.h"
#include "IntlLocale.h"
#include "IntlLocalePrototype.h"
#include "IntlNumberFormat.h"
#include "IntlNumberFormatPrototype.h"
#include "IntlObject.h"
#include "IntlPluralRules.h"
#include "IntlPluralRulesPrototype.h"
#include "IntlRelativeTimeFormat.h"
#include "IntlRelativeTimeFormatPrototype.h"
#include "IteratorPrototype.h"
#include "JSAPIWrapperObject.h"
#include "JSArrayBuffer.h"
#include "JSArrayBufferConstructor.h"
#include "JSArrayBufferPrototype.h"
#include "JSArrayIterator.h"
#include "JSAsyncFunction.h"
#include "JSAsyncGenerator.h"
#include "JSAsyncGeneratorFunction.h"
#include "JSBoundFunction.h"
#include "JSCallbackConstructor.h"
#include "JSCallbackFunction.h"
#include "JSCallbackObject.h"
#include "JSCustomGetterSetterFunction.h"
#include "JSDataView.h"
#include "JSDataViewPrototype.h"
#include "JSDollarVM.h"
#include "JSFunction.h"
#include "JSGenerator.h"
#include "JSGeneratorFunction.h"
#include "JSGenericTypedArrayViewConstructorInlines.h"
#include "JSGenericTypedArrayViewInlines.h"
#include "JSGenericTypedArrayViewPrototypeInlines.h"
#include "JSGlobalObjectFunctions.h"
#include "JSInternalPromise.h"
#include "JSInternalPromiseConstructor.h"
#include "JSInternalPromisePrototype.h"
#include "JSLexicalEnvironment.h"
#include "JSMap.h"
#include "JSMapIterator.h"
#include "JSMicrotask.h"
#include "JSModuleEnvironment.h"
#include "JSModuleLoader.h"
#include "JSModuleNamespaceObject.h"
#include "JSModuleRecord.h"
#include "JSNativeStdFunction.h"
#include "JSONObject.h"
#include "JSPromise.h"
#include "JSPromiseConstructor.h"
#include "JSPromisePrototype.h"
#include "JSSet.h"
#include "JSSetIterator.h"
#include "JSStringIterator.h"
#include "JSTypedArrayConstructors.h"
#include "JSTypedArrayPrototypes.h"
#include "JSTypedArrayViewConstructor.h"
#include "JSTypedArrayViewPrototype.h"
#include "JSTypedArrays.h"
#include "JSWeakMap.h"
#include "JSWeakObjectRef.h"
#include "JSWeakSet.h"
#include "JSWebAssembly.h"
#include "JSWebAssemblyCompileError.h"
#include "JSWebAssemblyGlobal.h"
#include "JSWebAssemblyInstance.h"
#include "JSWebAssemblyLinkError.h"
#include "JSWebAssemblyMemory.h"
#include "JSWebAssemblyModule.h"
#include "JSWebAssemblyRuntimeError.h"
#include "JSWebAssemblyTable.h"
#include "JSWithScope.h"
#include "LazyClassStructureInlines.h"
#include "LazyPropertyInlines.h"
#include "LinkTimeConstant.h"
#include "MapConstructor.h"
#include "MapIteratorPrototype.h"
#include "MapPrototype.h"
#include "MarkedSpaceInlines.h"
#include "MathObject.h"
#include "NativeErrorConstructor.h"
#include "NativeErrorPrototype.h"
#include "NullGetterFunction.h"
#include "NullSetterFunction.h"
#include "NumberConstructor.h"
#include "NumberPrototype.h"
#include "ObjCCallbackFunction.h"
#include "ObjectConstructor.h"
#include "ObjectPropertyChangeAdaptiveWatchpoint.h"
#include "ObjectPropertyConditionSet.h"
#include "ObjectPrototype.h"
#include "ProxyConstructor.h"
#include "ProxyObject.h"
#include "ProxyRevoke.h"
#include "ReflectObject.h"
#include "RegExpConstructor.h"
#include "RegExpMatchesArray.h"
#include "RegExpObject.h"
#include "RegExpPrototype.h"
#include "RegExpStringIteratorPrototype.h"
#include "SamplingProfiler.h"
#include "ScopedArguments.h"
#include "SetConstructor.h"
#include "SetIteratorPrototype.h"
#include "SetPrototype.h"
#include "StrictEvalActivation.h"
#include "StringConstructor.h"
#include "StringIteratorPrototype.h"
#include "StringPrototype.h"
#include "SymbolConstructor.h"
#include "SymbolObject.h"
#include "SymbolPrototype.h"
#include "WasmCapabilities.h"
#include "WeakMapConstructor.h"
#include "WeakMapPrototype.h"
#include "WeakObjectRefConstructor.h"
#include "WeakObjectRefPrototype.h"
#include "WeakSetConstructor.h"
#include "WeakSetPrototype.h"
#include "WebAssemblyCompileErrorConstructor.h"
#include "WebAssemblyCompileErrorPrototype.h"
#include "WebAssemblyFunction.h"
#include "WebAssemblyGlobalConstructor.h"
#include "WebAssemblyGlobalPrototype.h"
#include "WebAssemblyInstanceConstructor.h"
#include "WebAssemblyInstancePrototype.h"
#include "WebAssemblyLinkErrorConstructor.h"
#include "WebAssemblyLinkErrorPrototype.h"
#include "WebAssemblyMemoryConstructor.h"
#include "WebAssemblyMemoryPrototype.h"
#include "WebAssemblyModuleConstructor.h"
#include "WebAssemblyModulePrototype.h"
#include "WebAssemblyModuleRecord.h"
#include "WebAssemblyRuntimeErrorConstructor.h"
#include "WebAssemblyRuntimeErrorPrototype.h"
#include "WebAssemblyTableConstructor.h"
#include "WebAssemblyTablePrototype.h"
#include <wtf/RandomNumber.h>
#if ENABLE(REMOTE_INSPECTOR)
#include "JSGlobalObjectDebuggable.h"
#include "JSGlobalObjectInspectorController.h"
#endif
#ifdef JSC_GLIB_API_ENABLED
#include "JSCCallbackFunction.h"
#include "JSCWrapperMap.h"
#endif
namespace JSC {
#define CHECK_FEATURE_FLAG_TYPE(capitalName, lowerName, properName, instanceType, jsName, prototypeBase, featureFlag) \
static_assert(std::is_same_v<std::remove_cv_t<decltype(featureFlag)>, bool> || std::is_same_v<std::remove_cv_t<decltype(featureFlag)>, bool&>);
FOR_EACH_SIMPLE_BUILTIN_TYPE(CHECK_FEATURE_FLAG_TYPE)
FOR_EACH_BUILTIN_DERIVED_ITERATOR_TYPE(CHECK_FEATURE_FLAG_TYPE)
FOR_EACH_LAZY_BUILTIN_TYPE(CHECK_FEATURE_FLAG_TYPE)
static JSValue createProxyProperty(VM& vm, JSObject* object)
{
JSGlobalObject* global = jsCast<JSGlobalObject*>(object);
return ProxyConstructor::create(vm, ProxyConstructor::createStructure(vm, global, global->functionPrototype()));
}
static JSValue createJSONProperty(VM& vm, JSObject* object)
{
JSGlobalObject* global = jsCast<JSGlobalObject*>(object);
return JSONObject::create(vm, JSONObject::createStructure(vm, global, global->objectPrototype()));
}
static JSValue createMathProperty(VM& vm, JSObject* object)
{
JSGlobalObject* global = jsCast<JSGlobalObject*>(object);
return MathObject::create(vm, global, MathObject::createStructure(vm, global, global->objectPrototype()));
}
static JSValue createReflectProperty(VM& vm, JSObject* object)
{
JSGlobalObject* global = jsCast<JSGlobalObject*>(object);
return ReflectObject::create(vm, global, ReflectObject::createStructure(vm, global, global->objectPrototype()));
}
static JSValue createConsoleProperty(VM& vm, JSObject* object)
{
JSGlobalObject* global = jsCast<JSGlobalObject*>(object);
return ConsoleObject::create(vm, global, ConsoleObject::createStructure(vm, global, constructEmptyObject(global)));
}
static EncodedJSValue JSC_HOST_CALL makeBoundFunction(JSGlobalObject* globalObject, CallFrame* callFrame)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* target = asObject(callFrame->uncheckedArgument(0));
JSValue boundThis = callFrame->uncheckedArgument(1);
JSValue boundArgs = callFrame->uncheckedArgument(2);
JSValue lengthValue = callFrame->uncheckedArgument(3);
JSString* nameString = asString(callFrame->uncheckedArgument(4));
ASSERT(lengthValue.isInt32AsAnyInt());
int32_t length = lengthValue.asInt32AsAnyInt();
RELEASE_AND_RETURN(scope, JSValue::encode(JSBoundFunction::create(vm, globalObject, target, boundThis, boundArgs.isCell() ? jsCast<JSImmutableButterfly*>(boundArgs) : nullptr, length, nameString)));
}
static EncodedJSValue JSC_HOST_CALL hasOwnLengthProperty(JSGlobalObject* globalObject, CallFrame* callFrame)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* target = asObject(callFrame->uncheckedArgument(0));
JSFunction* function = jsDynamicCast<JSFunction*>(vm, target);
if (function && function->canAssumeNameAndLengthAreOriginal(vm)) {
#if ASSERT_ENABLED
bool result = target->hasOwnProperty(globalObject, vm.propertyNames->length);
RETURN_IF_EXCEPTION(scope, { });
ASSERT(result);
#endif
return JSValue::encode(jsBoolean(true));
}
RELEASE_AND_RETURN(scope, JSValue::encode(jsBoolean(target->hasOwnProperty(globalObject, vm.propertyNames->length))));
}
// FIXME: use a bytecode or intrinsic for creating a private symbol.
// https://bugs.webkit.org/show_bug.cgi?id=212782
static EncodedJSValue JSC_HOST_CALL createPrivateSymbol(JSGlobalObject* globalObject, CallFrame*)
{
VM& vm = globalObject->vm();
return JSValue::encode(Symbol::create(vm, PrivateSymbolImpl::createNullSymbol().get()));
}
#if ASSERT_ENABLED
static EncodedJSValue JSC_HOST_CALL assertCall(JSGlobalObject* globalObject, CallFrame* callFrame)
{
RELEASE_ASSERT(callFrame->argument(0).isBoolean());
if (callFrame->argument(0).asBoolean())
return JSValue::encode(jsUndefined());
bool iteratedOnce = false;
CodeBlock* codeBlock = nullptr;
unsigned line;
callFrame->iterate(globalObject->vm(), [&] (StackVisitor& visitor) {
if (!iteratedOnce) {
iteratedOnce = true;
return StackVisitor::Continue;
}
RELEASE_ASSERT(visitor->hasLineAndColumnInfo());
unsigned column;
visitor->computeLineAndColumn(line, column);
codeBlock = visitor->codeBlock();
return StackVisitor::Done;
});
RELEASE_ASSERT(!!codeBlock);
RELEASE_ASSERT_WITH_MESSAGE(false, "JS assertion failed at line %u in:\n%s\n", line, codeBlock->sourceCodeForTools().data());
return JSValue::encode(jsUndefined());
}
#endif // ASSERT_ENABLED
#if ENABLE(SAMPLING_PROFILER)
static EncodedJSValue JSC_HOST_CALL enableSamplingProfiler(JSGlobalObject* globalObject, CallFrame*)
{
SamplingProfiler* profiler = globalObject->vm().samplingProfiler();
if (!profiler)
profiler = &globalObject->vm().ensureSamplingProfiler(Stopwatch::create());
profiler->start();
return JSValue::encode(jsUndefined());
}
static EncodedJSValue JSC_HOST_CALL disableSamplingProfiler(JSGlobalObject* globalObject, CallFrame*)
{
SamplingProfiler* profiler = globalObject->vm().samplingProfiler();
if (!profiler)
profiler = &globalObject->vm().ensureSamplingProfiler(Stopwatch::create());
{
auto locker = holdLock(profiler->getLock());
profiler->pause(locker);
}
return JSValue::encode(jsUndefined());
}
#endif
static EncodedJSValue JSC_HOST_CALL enableSuperSampler(JSGlobalObject*, CallFrame*)
{
enableSuperSampler();
return JSValue::encode(jsUndefined());
}
static EncodedJSValue JSC_HOST_CALL disableSuperSampler(JSGlobalObject*, CallFrame*)
{
disableSuperSampler();
return JSValue::encode(jsUndefined());
}
} // namespace JSC
#include "JSGlobalObject.lut.h"
namespace JSC {
const ClassInfo JSGlobalObject::s_info = { "GlobalObject", &Base::s_info, &globalObjectTable, nullptr, CREATE_METHOD_TABLE(JSGlobalObject) };
const GlobalObjectMethodTable JSGlobalObject::s_globalObjectMethodTable = {
&supportsRichSourceInfo,
&shouldInterruptScript,
&javaScriptRuntimeFlags,
nullptr, // queueTaskToEventLoop
&shouldInterruptScriptBeforeTimeout,
nullptr, // moduleLoaderImportModule
nullptr, // moduleLoaderResolve
nullptr, // moduleLoaderFetch
nullptr, // moduleLoaderCreateImportMetaProperties
nullptr, // moduleLoaderEvaluate
nullptr, // promiseRejectionTracker
nullptr, // defaultLanguage
nullptr, // compileStreaming
nullptr, // instantiateStreaming
};
/* Source for JSGlobalObject.lut.h
@begin globalObjectTable
isNaN JSBuiltin DontEnum|Function 1
isFinite JSBuiltin DontEnum|Function 1
escape globalFuncEscape DontEnum|Function 1
unescape globalFuncUnescape DontEnum|Function 1
decodeURI globalFuncDecodeURI DontEnum|Function 1
decodeURIComponent globalFuncDecodeURIComponent DontEnum|Function 1
encodeURI globalFuncEncodeURI DontEnum|Function 1
encodeURIComponent globalFuncEncodeURIComponent DontEnum|Function 1
eval JSGlobalObject::m_evalFunction DontEnum|CellProperty
globalThis JSGlobalObject::m_globalThis DontEnum|CellProperty
parseInt JSGlobalObject::m_parseIntFunction DontEnum|CellProperty
parseFloat JSGlobalObject::m_parseFloatFunction DontEnum|CellProperty
ArrayBuffer JSGlobalObject::m_arrayBufferStructure DontEnum|ClassStructure
EvalError JSGlobalObject::m_evalErrorStructure DontEnum|ClassStructure
RangeError JSGlobalObject::m_rangeErrorStructure DontEnum|ClassStructure
ReferenceError JSGlobalObject::m_referenceErrorStructure DontEnum|ClassStructure
SyntaxError JSGlobalObject::m_syntaxErrorStructure DontEnum|ClassStructure
TypeError JSGlobalObject::m_typeErrorStructure DontEnum|ClassStructure
URIError JSGlobalObject::m_URIErrorStructure DontEnum|ClassStructure
AggregateError JSGlobalObject::m_aggregateErrorStructure DontEnum|ClassStructure
Proxy createProxyProperty DontEnum|PropertyCallback
Reflect createReflectProperty DontEnum|PropertyCallback
JSON createJSONProperty DontEnum|PropertyCallback
Math createMathProperty DontEnum|PropertyCallback
console createConsoleProperty DontEnum|PropertyCallback
Int8Array JSGlobalObject::m_typedArrayInt8 DontEnum|ClassStructure
Int16Array JSGlobalObject::m_typedArrayInt16 DontEnum|ClassStructure
Int32Array JSGlobalObject::m_typedArrayInt32 DontEnum|ClassStructure
Uint8Array JSGlobalObject::m_typedArrayUint8 DontEnum|ClassStructure
Uint8ClampedArray JSGlobalObject::m_typedArrayUint8Clamped DontEnum|ClassStructure
Uint16Array JSGlobalObject::m_typedArrayUint16 DontEnum|ClassStructure
Uint32Array JSGlobalObject::m_typedArrayUint32 DontEnum|ClassStructure
Float32Array JSGlobalObject::m_typedArrayFloat32 DontEnum|ClassStructure
Float64Array JSGlobalObject::m_typedArrayFloat64 DontEnum|ClassStructure
DataView JSGlobalObject::m_typedArrayDataView DontEnum|ClassStructure
Date JSGlobalObject::m_dateStructure DontEnum|ClassStructure
Error JSGlobalObject::m_errorStructure DontEnum|ClassStructure
Boolean JSGlobalObject::m_booleanObjectStructure DontEnum|ClassStructure
Map JSGlobalObject::m_mapStructure DontEnum|ClassStructure
Number JSGlobalObject::m_numberObjectStructure DontEnum|ClassStructure
Set JSGlobalObject::m_setStructure DontEnum|ClassStructure
Symbol JSGlobalObject::m_symbolObjectStructure DontEnum|ClassStructure
WeakMap JSGlobalObject::m_weakMapStructure DontEnum|ClassStructure
WeakSet JSGlobalObject::m_weakSetStructure DontEnum|ClassStructure
@end
*/
static EncodedJSValue JSC_HOST_CALL enqueueJob(JSGlobalObject* globalObject, CallFrame* callFrame)
{
VM& vm = globalObject->vm();
JSValue job = callFrame->argument(0);
JSValue argument0 = callFrame->argument(1);
JSValue argument1 = callFrame->argument(2);
JSValue argument2 = callFrame->argument(3);
globalObject->queueMicrotask(createJSMicrotask(vm, job, argument0, argument1, argument2));
return JSValue::encode(jsUndefined());
}
JSGlobalObject::JSGlobalObject(VM& vm, Structure* structure, const GlobalObjectMethodTable* globalObjectMethodTable)
: Base(vm, structure, nullptr)
, m_vm(&vm)
, m_linkTimeConstants(numberOfLinkTimeConstants)
, m_masqueradesAsUndefinedWatchpoint(WatchpointSet::create(IsWatched))
, m_havingABadTimeWatchpoint(WatchpointSet::create(IsWatched))
, m_varInjectionWatchpoint(WatchpointSet::create(IsWatched))
, m_weakRandom(Options::forceWeakRandomSeed() ? Options::forcedWeakRandomSeed() : static_cast<unsigned>(randomNumber() * (std::numeric_limits<unsigned>::max() + 1.0)))
, m_arrayIteratorProtocolWatchpointSet(IsWatched)
, m_mapIteratorProtocolWatchpointSet(IsWatched)
, m_setIteratorProtocolWatchpointSet(IsWatched)
, m_stringIteratorProtocolWatchpointSet(IsWatched)
, m_mapSetWatchpointSet(IsWatched)
, m_setAddWatchpointSet(IsWatched)
, m_arraySpeciesWatchpointSet(ClearWatchpoint)
, m_arrayJoinWatchpointSet(IsWatched)
, m_numberToStringWatchpointSet(IsWatched)
, m_runtimeFlags()
, m_stackTraceLimit(Options::defaultErrorStackTraceLimit())
, m_globalObjectMethodTable(globalObjectMethodTable ? globalObjectMethodTable : &s_globalObjectMethodTable)
{
}
JSGlobalObject::~JSGlobalObject()
{
#if ENABLE(REMOTE_INSPECTOR)
m_inspectorController->globalObjectDestroyed();
#endif
if (m_debugger)
m_debugger->detach(this, Debugger::GlobalObjectIsDestructing);
}
void JSGlobalObject::destroy(JSCell* cell)
{
static_cast<JSGlobalObject*>(cell)->JSGlobalObject::~JSGlobalObject();
}
void JSGlobalObject::setGlobalThis(VM& vm, JSObject* globalThis)
{
m_globalThis.set(vm, this, globalThis);
}
static GetterSetter* getGetterById(JSGlobalObject* globalObject, JSObject* base, const Identifier& ident)
{
JSValue baseValue = JSValue(base);
PropertySlot slot(baseValue, PropertySlot::InternalMethodType::VMInquiry);
baseValue.getPropertySlot(globalObject, ident, slot);
return jsCast<GetterSetter*>(slot.getPureResult());
}
static ObjectPropertyCondition setupAdaptiveWatchpoint(JSGlobalObject* globalObject, JSObject* base, const Identifier& ident)
{
// Performing these gets should not throw.
VM& vm = globalObject->vm();
auto catchScope = DECLARE_CATCH_SCOPE(vm);
PropertySlot slot(base, PropertySlot::InternalMethodType::Get);
bool result = base->getOwnPropertySlot(base, globalObject, ident, slot);
ASSERT_UNUSED(result, result);
catchScope.assertNoException();
RELEASE_ASSERT(slot.isCacheableValue());
JSValue functionValue = slot.getValue(globalObject, ident);
catchScope.assertNoException();
ASSERT(jsDynamicCast<JSFunction*>(vm, functionValue));
ObjectPropertyCondition condition = generateConditionForSelfEquivalence(vm, nullptr, base, ident.impl());
RELEASE_ASSERT(condition.requiredValue() == functionValue);
bool isWatchable = condition.isWatchable(PropertyCondition::EnsureWatchability);
RELEASE_ASSERT(isWatchable); // We allow this to install the necessary watchpoints.
return condition;
}
template<ErrorType errorType>
void JSGlobalObject::initializeErrorConstructor(LazyClassStructure::Initializer& init)
{
init.setPrototype(NativeErrorPrototype::create(init.vm, NativeErrorPrototype::createStructure(init.vm, this, m_errorStructure.prototype(this)), errorTypeName(errorType)));
init.setStructure(ErrorInstance::createStructure(init.vm, this, init.prototype));
init.setConstructor(NativeErrorConstructor<errorType>::create(init.vm, NativeErrorConstructor<errorType>::createStructure(init.vm, this, m_errorStructure.constructor(this)), jsCast<NativeErrorPrototype*>(init.prototype)));
}
void JSGlobalObject::initializeAggregateErrorConstructor(LazyClassStructure::Initializer& init)
{
init.setPrototype(AggregateErrorPrototype::create(init.vm, AggregateErrorPrototype::createStructure(init.vm, this, m_errorStructure.prototype(this))));
init.setStructure(AggregateError::createStructure(init.vm, this, init.prototype));
init.setConstructor(AggregateErrorConstructor::create(init.vm, AggregateErrorConstructor::createStructure(init.vm, this, m_errorStructure.constructor(this)), jsCast<AggregateErrorPrototype*>(init.prototype)));
}
void JSGlobalObject::init(VM& vm)
{
ASSERT(vm.currentThreadIsHoldingAPILock());
auto catchScope = DECLARE_CATCH_SCOPE(vm);
Base::setStructure(vm, Structure::toCacheableDictionaryTransition(vm, structure(vm)));
m_debugger = nullptr;
#if ENABLE(REMOTE_INSPECTOR)
m_inspectorController = makeUnique<Inspector::JSGlobalObjectInspectorController>(*this);
m_inspectorDebuggable = makeUnique<JSGlobalObjectDebuggable>(*this);
m_inspectorDebuggable->init();
m_consoleClient = m_inspectorController->consoleClient();
#endif
m_functionPrototype.set(vm, this, FunctionPrototype::create(vm, FunctionPrototype::createStructure(vm, this, jsNull()))); // The real prototype will be set once ObjectPrototype is created.
m_calleeStructure.set(vm, this, JSCallee::createStructure(vm, this, jsNull()));
m_globalLexicalEnvironment.set(vm, this, JSGlobalLexicalEnvironment::create(vm, JSGlobalLexicalEnvironment::createStructure(vm, this), this));
// Need to create the callee structure (above) before creating the callee.
JSCallee* globalCallee = JSCallee::create(vm, this, globalScope());
m_globalCallee.set(vm, this, globalCallee);
CallFrame::initDeprecatedCallFrameForDebugger(JSGlobalObject::deprecatedCallFrameForDebugger(), globalCallee);
JSCallee* stackOverflowFrameCallee = JSCallee::create(vm, this, globalScope());
m_stackOverflowFrameCallee.set(vm, this, stackOverflowFrameCallee);
m_hostFunctionStructure.set(vm, this, JSFunction::createStructure(vm, this, m_functionPrototype.get()));
auto initFunctionStructures = [&] (FunctionStructures& structures) {
structures.strictFunctionStructure.set(vm, this, JSStrictFunction::createStructure(vm, this, m_functionPrototype.get()));
structures.sloppyFunctionStructure.set(vm, this, JSSloppyFunction::createStructure(vm, this, m_functionPrototype.get()));
structures.arrowFunctionStructure.set(vm, this, JSArrowFunction::createStructure(vm, this, m_functionPrototype.get()));
};
initFunctionStructures(m_builtinFunctions);
initFunctionStructures(m_ordinaryFunctions);
m_customGetterSetterFunctionStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(JSCustomGetterSetterFunction::createStructure(init.vm, init.owner, init.owner->m_functionPrototype.get()));
});
m_boundFunctionStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(JSBoundFunction::createStructure(init.vm, init.owner, init.owner->m_functionPrototype.get()));
});
m_nativeStdFunctionStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(JSNativeStdFunction::createStructure(init.vm, init.owner, init.owner->m_functionPrototype.get()));
});
JSFunction* callFunction = nullptr;
JSFunction* applyFunction = nullptr;
JSFunction* hasInstanceSymbolFunction = nullptr;
m_functionPrototype->addFunctionProperties(vm, this, &callFunction, &applyFunction, &hasInstanceSymbolFunction);
m_arrayProtoToStringFunction.initLater(
[] (const Initializer<JSFunction>& init) {
init.set(JSFunction::create(init.vm, init.owner, 0, init.vm.propertyNames->toString.string(), arrayProtoFuncToString, NoIntrinsic));
});
m_arrayProtoValuesFunction.initLater(
[] (const Initializer<JSFunction>& init) {
init.set(JSFunction::create(init.vm, init.owner, 0, init.vm.propertyNames->builtinNames().valuesPublicName().string(), arrayProtoFuncValues, ArrayValuesIntrinsic));
});
m_iteratorProtocolFunction.initLater(
[] (const Initializer<JSFunction>& init) {
init.set(JSFunction::create(init.vm, iteratorHelpersPerformIterationCodeGenerator(init.vm), init.owner));
});
m_promiseResolveFunction.initLater(
[] (const Initializer<JSFunction>& init) {
init.set(JSFunction::create(init.vm, promiseConstructorResolveCodeGenerator(init.vm), init.owner));
});
m_numberProtoToStringFunction.initLater(
[] (const Initializer<JSFunction>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 1, init.vm.propertyNames->toString.string(), numberProtoFuncToString, NumberPrototypeToStringIntrinsic));
});
m_functionProtoHasInstanceSymbolFunction.set(vm, this, hasInstanceSymbolFunction);
m_throwTypeErrorGetterSetter.initLater(
[] (const Initializer<GetterSetter>& init) {
JSFunction* thrower = init.owner->throwTypeErrorFunction();
GetterSetter* getterSetter = GetterSetter::create(init.vm, init.owner, thrower, thrower);
init.set(getterSetter);
});
m_nullGetterFunction.set(vm, this, NullGetterFunction::create(vm, NullGetterFunction::createStructure(vm, this, m_functionPrototype.get())));
Structure* nullSetterFunctionStructure = NullSetterFunction::createStructure(vm, this, m_functionPrototype.get());
m_nullSetterFunction.set(vm, this, NullSetterFunction::create(vm, nullSetterFunctionStructure, ECMAMode::sloppy()));
m_nullSetterStrictFunction.set(vm, this, NullSetterFunction::create(vm, nullSetterFunctionStructure, ECMAMode::strict()));
m_objectPrototype.set(vm, this, ObjectPrototype::create(vm, this, ObjectPrototype::createStructure(vm, this, jsNull())));
// We have to manually set this here because we make it a prototype without transition below.
m_objectPrototype.get()->didBecomePrototype();
GetterSetter* protoAccessor = GetterSetter::create(vm, this,
JSFunction::create(vm, this, 0, makeString("get ", vm.propertyNames->underscoreProto.string()), globalFuncProtoGetter, UnderscoreProtoIntrinsic),
JSFunction::create(vm, this, 0, makeString("set ", vm.propertyNames->underscoreProto.string()), globalFuncProtoSetter));
m_objectPrototype->putDirectNonIndexAccessorWithoutTransition(vm, vm.propertyNames->underscoreProto, protoAccessor, PropertyAttribute::Accessor | PropertyAttribute::DontEnum);
m_functionPrototype->structure(vm)->setPrototypeWithoutTransition(vm, m_objectPrototype.get());
m_objectStructureForObjectConstructor.set(vm, this, vm.structureCache.emptyObjectStructureForPrototype(this, m_objectPrototype.get(), JSFinalObject::defaultInlineCapacity()));
m_objectProtoValueOfFunction.set(vm, this, jsCast<JSFunction*>(objectPrototype()->getDirect(vm, vm.propertyNames->valueOf)));
JSFunction* thrower = JSFunction::create(vm, this, 0, String(), globalFuncThrowTypeErrorArgumentsCalleeAndCaller);
GetterSetter* getterSetter = GetterSetter::create(vm, this, thrower, thrower);
m_throwTypeErrorArgumentsCalleeAndCallerGetterSetter.set(vm, this, getterSetter);
m_functionPrototype->initRestrictedProperties(vm, this);
m_speciesGetterSetter.set(vm, this, GetterSetter::create(vm, this, JSFunction::create(vm, globalOperationsSpeciesGetterCodeGenerator(vm), this), nullptr));
m_typedArrayProto.initLater(
[] (const Initializer<JSTypedArrayViewPrototype>& init) {
init.set(JSTypedArrayViewPrototype::create(init.vm, init.owner, JSTypedArrayViewPrototype::createStructure(init.vm, init.owner, init.owner->m_objectPrototype.get())));
// Make sure that the constructor gets initialized, too.
init.owner->m_typedArraySuperConstructor.get(init.owner);
});
m_typedArraySuperConstructor.initLater(
[] (const Initializer<JSTypedArrayViewConstructor>& init) {
JSTypedArrayViewPrototype* prototype = init.owner->m_typedArrayProto.get(init.owner);
JSTypedArrayViewConstructor* constructor = JSTypedArrayViewConstructor::create(init.vm, init.owner, JSTypedArrayViewConstructor::createStructure(init.vm, init.owner, init.owner->m_functionPrototype.get()), prototype, init.owner->m_speciesGetterSetter.get());
prototype->putDirectWithoutTransition(init.vm, init.vm.propertyNames->constructor, constructor, static_cast<unsigned>(PropertyAttribute::DontEnum));
init.set(constructor);
});
#define INIT_TYPED_ARRAY_LATER(type) \
m_typedArray ## type.initLater( \
[] (LazyClassStructure::Initializer& init) { \
init.setPrototype(JS ## type ## ArrayPrototype::create(init.vm, init.global, JS ## type ## ArrayPrototype::createStructure(init.vm, init.global, init.global->m_typedArrayProto.get(init.global)))); \
init.setStructure(JS ## type ## Array::createStructure(init.vm, init.global, init.prototype)); \
init.setConstructor(JS ## type ## ArrayConstructor::create(init.vm, init.global, JS ## type ## ArrayConstructor::createStructure(init.vm, init.global, init.global->m_typedArraySuperConstructor.get(init.global)), init.prototype, #type "Array"_s, typedArrayConstructorAllocate ## type ## ArrayCodeGenerator(init.vm))); \
init.global->putDirect(init.vm, init.vm.propertyNames->builtinNames().type ## ArrayPrivateName(), init.constructor, static_cast<unsigned>(PropertyAttribute::DontEnum)); \
});
FOR_EACH_TYPED_ARRAY_TYPE_EXCLUDING_DATA_VIEW(INIT_TYPED_ARRAY_LATER)
#undef INIT_TYPED_ARRAY_LATER
m_typedArrayDataView.initLater(
[] (LazyClassStructure::Initializer& init) {
init.setPrototype(JSDataViewPrototype::create(init.vm, JSDataViewPrototype::createStructure(init.vm, init.global, init.global->m_objectPrototype.get())));
init.setStructure(JSDataView::createStructure(init.vm, init.global, init.prototype));
init.setConstructor(JSDataViewConstructor::create(init.vm, init.global, JSDataViewConstructor::createStructure(init.vm, init.global, init.global->m_functionPrototype.get()), init.prototype, "DataView"_s, nullptr));
});
m_lexicalEnvironmentStructure.set(vm, this, JSLexicalEnvironment::createStructure(vm, this));
m_moduleEnvironmentStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(JSModuleEnvironment::createStructure(init.vm, init.owner));
});
m_strictEvalActivationStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(StrictEvalActivation::createStructure(init.vm, init.owner, jsNull()));
});
m_debuggerScopeStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(DebuggerScope::createStructure(init.vm, init.owner));
});
m_withScopeStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(JSWithScope::createStructure(init.vm, init.owner, jsNull()));
});
m_nullPrototypeObjectStructure.set(vm, this, JSFinalObject::createStructure(vm, this, jsNull(), JSFinalObject::defaultInlineCapacity()));
m_callbackFunctionStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(JSCallbackFunction::createStructure(init.vm, init.owner, init.owner->m_functionPrototype.get()));
});
m_directArgumentsStructure.set(vm, this, DirectArguments::createStructure(vm, this, m_objectPrototype.get()));
m_scopedArgumentsStructure.set(vm, this, ScopedArguments::createStructure(vm, this, m_objectPrototype.get()));
m_clonedArgumentsStructure.set(vm, this, ClonedArguments::createStructure(vm, this, m_objectPrototype.get()));
m_callbackConstructorStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(JSCallbackConstructor::createStructure(init.vm, init.owner, init.owner->m_objectPrototype.get()));
});
m_callbackObjectStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(JSCallbackObject<JSNonFinalObject>::createStructure(init.vm, init.owner, init.owner->m_objectPrototype.get()));
});
#if JSC_OBJC_API_ENABLED
m_objcCallbackFunctionStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(ObjCCallbackFunction::createStructure(init.vm, init.owner, init.owner->m_functionPrototype.get()));
});
m_objcWrapperObjectStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(JSCallbackObject<JSAPIWrapperObject>::createStructure(init.vm, init.owner, init.owner->m_objectPrototype.get()));
});
#endif
#ifdef JSC_GLIB_API_ENABLED
m_glibCallbackFunctionStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(JSCCallbackFunction::createStructure(init.vm, init.owner, init.owner->m_functionPrototype.get()));
});
m_glibWrapperObjectStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(JSCallbackObject<JSAPIWrapperObject>::createStructure(init.vm, init.owner, init.owner->m_objectPrototype.get()));
});
#endif
m_arrayPrototype.set(vm, this, ArrayPrototype::create(vm, this, ArrayPrototype::createStructure(vm, this, m_objectPrototype.get())));
m_originalArrayStructureForIndexingShape[arrayIndexFromIndexingType(UndecidedShape)].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithUndecided));
m_originalArrayStructureForIndexingShape[arrayIndexFromIndexingType(Int32Shape)].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithInt32));
m_originalArrayStructureForIndexingShape[arrayIndexFromIndexingType(DoubleShape)].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithDouble));
m_originalArrayStructureForIndexingShape[arrayIndexFromIndexingType(ContiguousShape)].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithContiguous));
m_originalArrayStructureForIndexingShape[arrayIndexFromIndexingType(ArrayStorageShape)].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithArrayStorage));
m_originalArrayStructureForIndexingShape[arrayIndexFromIndexingType(SlowPutArrayStorageShape)].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithSlowPutArrayStorage));
m_originalArrayStructureForIndexingShape[arrayIndexFromIndexingType(CopyOnWriteArrayWithInt32)].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), CopyOnWriteArrayWithInt32));
m_originalArrayStructureForIndexingShape[arrayIndexFromIndexingType(CopyOnWriteArrayWithDouble)].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), CopyOnWriteArrayWithDouble));
m_originalArrayStructureForIndexingShape[arrayIndexFromIndexingType(CopyOnWriteArrayWithContiguous)].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), CopyOnWriteArrayWithContiguous));
for (unsigned i = 0; i < NumberOfArrayIndexingModes; ++i)
m_arrayStructureForIndexingShapeDuringAllocation[i] = m_originalArrayStructureForIndexingShape[i];
m_regExpPrototype.set(vm, this, RegExpPrototype::create(vm, this, RegExpPrototype::createStructure(vm, this, m_objectPrototype.get())));
m_regExpStructure.set(vm, this, RegExpObject::createStructure(vm, this, m_regExpPrototype.get()));
m_regExpMatchesArrayStructure.set(vm, this, createRegExpMatchesArrayStructure(vm, this));
m_moduleRecordStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(JSModuleRecord::createStructure(init.vm, init.owner, jsNull()));
});
m_moduleNamespaceObjectStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(JSModuleNamespaceObject::createStructure(init.vm, init.owner, jsNull()));
});
m_proxyObjectStructure.initLater(
[] (const Initializer<Structure>& init) {
bool isCallable = false;
init.set(ProxyObject::createStructure(init.vm, init.owner, jsNull(), isCallable));
});
m_callableProxyObjectStructure.initLater(
[] (const Initializer<Structure>& init) {
bool isCallable = true;
init.set(ProxyObject::createStructure(init.vm, init.owner, jsNull(), isCallable));
});
m_proxyRevokeStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(ProxyRevoke::createStructure(init.vm, init.owner, init.owner->m_functionPrototype.get()));
});
m_parseIntFunction.initLater(
[] (const Initializer<JSFunction>& init) {
init.set(JSFunction::create(init.vm, init.owner, 2, init.vm.propertyNames->parseInt.string(), globalFuncParseInt, ParseIntIntrinsic));
});
m_parseFloatFunction.initLater(
[] (const Initializer<JSFunction>& init) {
init.set(JSFunction::create(init.vm, init.owner, 1, init.vm.propertyNames->parseFloat.string(), globalFuncParseFloat, NoIntrinsic));
});
#if ENABLE(SHARED_ARRAY_BUFFER)
m_sharedArrayBufferPrototype.set(vm, this, JSArrayBufferPrototype::create(vm, this, JSArrayBufferPrototype::createStructure(vm, this, m_objectPrototype.get()), ArrayBufferSharingMode::Shared));
m_sharedArrayBufferStructure.set(vm, this, JSArrayBuffer::createStructure(vm, this, m_sharedArrayBufferPrototype.get()));
#endif
m_iteratorPrototype.set(vm, this, IteratorPrototype::create(vm, this, IteratorPrototype::createStructure(vm, this, m_objectPrototype.get())));
m_asyncIteratorPrototype.set(vm, this, AsyncIteratorPrototype::create(vm, this, AsyncIteratorPrototype::createStructure(vm, this, m_objectPrototype.get())));
m_generatorPrototype.set(vm, this, GeneratorPrototype::create(vm, this, GeneratorPrototype::createStructure(vm, this, m_iteratorPrototype.get())));
m_asyncGeneratorPrototype.set(vm, this, AsyncGeneratorPrototype::create(vm, this, AsyncGeneratorPrototype::createStructure(vm, this, m_asyncIteratorPrototype.get())));
auto* arrayIteratorPrototype = ArrayIteratorPrototype::create(vm, this, ArrayIteratorPrototype::createStructure(vm, this, m_iteratorPrototype.get()));
m_arrayIteratorPrototype.set(vm, this, arrayIteratorPrototype);
m_arrayIteratorStructure.set(vm, this, JSArrayIterator::createStructure(vm, this, arrayIteratorPrototype));
auto* mapIteratorPrototype = MapIteratorPrototype::create(vm, this, MapIteratorPrototype::createStructure(vm, this, m_iteratorPrototype.get()));
m_mapIteratorPrototype.set(vm, this, mapIteratorPrototype);
m_mapIteratorStructure.set(vm, this, JSMapIterator::createStructure(vm, this, mapIteratorPrototype));
auto* setIteratorPrototype = SetIteratorPrototype::create(vm, this, SetIteratorPrototype::createStructure(vm, this, m_iteratorPrototype.get()));
m_setIteratorPrototype.set(vm, this, setIteratorPrototype);
m_setIteratorStructure.set(vm, this, JSSetIterator::createStructure(vm, this, setIteratorPrototype));
JSFunction* defaultPromiseThen = JSFunction::create(vm, promisePrototypeThenCodeGenerator(vm), this);
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::defaultPromiseThen)].set(vm, this, defaultPromiseThen);
#define CREATE_PROTOTYPE_FOR_SIMPLE_TYPE(capitalName, lowerName, properName, instanceType, jsName, prototypeBase, featureFlag) if (featureFlag) { \
m_ ## lowerName ## Prototype.set(vm, this, capitalName##Prototype::create(vm, this, capitalName##Prototype::createStructure(vm, this, m_ ## prototypeBase ## Prototype.get()))); \
m_ ## properName ## Structure.set(vm, this, instanceType::createStructure(vm, this, m_ ## lowerName ## Prototype.get())); \
}
FOR_EACH_SIMPLE_BUILTIN_TYPE(CREATE_PROTOTYPE_FOR_SIMPLE_TYPE)
FOR_EACH_BUILTIN_DERIVED_ITERATOR_TYPE(CREATE_PROTOTYPE_FOR_SIMPLE_TYPE)
#undef CREATE_PROTOTYPE_FOR_SIMPLE_TYPE
#define CREATE_PROTOTYPE_FOR_LAZY_TYPE(capitalName, lowerName, properName, instanceType, jsName, prototypeBase, featureFlag) if (featureFlag) { \
m_ ## properName ## Structure.initLater(\
[] (LazyClassStructure::Initializer& init) { \
init.setPrototype(capitalName##Prototype::create(init.vm, init.global, capitalName##Prototype::createStructure(init.vm, init.global, init.global->m_ ## prototypeBase ## Prototype.get()))); \
init.setStructure(instanceType::createStructure(init.vm, init.global, init.prototype)); \
init.setConstructor(capitalName ## Constructor::create(init.vm, capitalName ## Constructor::createStructure(init.vm, init.global, init.global->m_functionPrototype.get()), jsCast<capitalName ## Prototype*>(init.prototype), init.global->m_speciesGetterSetter.get())); \
}); \
}
FOR_EACH_LAZY_BUILTIN_TYPE(CREATE_PROTOTYPE_FOR_LAZY_TYPE)
// Constructors
ObjectConstructor* objectConstructor = ObjectConstructor::create(vm, this, ObjectConstructor::createStructure(vm, this, m_functionPrototype.get()), m_objectPrototype.get());
m_objectConstructor.set(vm, this, objectConstructor);
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::Object)].set(vm, this, objectConstructor);
JSFunction* throwTypeErrorFunction = JSFunction::create(vm, this, 0, String(), globalFuncThrowTypeError);
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::throwTypeErrorFunction)].set(vm, this, throwTypeErrorFunction);
FunctionConstructor* functionConstructor = FunctionConstructor::create(vm, FunctionConstructor::createStructure(vm, this, m_functionPrototype.get()), m_functionPrototype.get());
m_functionConstructor.set(vm, this, functionConstructor);
ArrayConstructor* arrayConstructor = ArrayConstructor::create(vm, this, ArrayConstructor::createStructure(vm, this, m_functionPrototype.get()), m_arrayPrototype.get(), m_speciesGetterSetter.get());
m_arrayConstructor.set(vm, this, arrayConstructor);
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::Array)].set(vm, this, arrayConstructor);
RegExpConstructor* regExpConstructor = RegExpConstructor::create(vm, RegExpConstructor::createStructure(vm, this, m_functionPrototype.get()), m_regExpPrototype.get(), m_speciesGetterSetter.get());
m_regExpConstructor.set(vm, this, regExpConstructor);
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::RegExp)].set(vm, this, regExpConstructor);
m_regExpGlobalData.cachedResult().record(vm, this, nullptr, jsEmptyString(vm), MatchResult(0, 0));
#if ENABLE(SHARED_ARRAY_BUFFER)
JSSharedArrayBufferConstructor* sharedArrayBufferConstructor = nullptr;
sharedArrayBufferConstructor = JSSharedArrayBufferConstructor::create(vm, JSSharedArrayBufferConstructor::createStructure(vm, this, m_functionPrototype.get()), m_sharedArrayBufferPrototype.get(), m_speciesGetterSetter.get());
m_sharedArrayBufferPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, sharedArrayBufferConstructor, static_cast<unsigned>(PropertyAttribute::DontEnum));
AtomicsObject* atomicsObject = AtomicsObject::create(vm, this, AtomicsObject::createStructure(vm, this, m_objectPrototype.get()));
#endif
#define CREATE_CONSTRUCTOR_FOR_SIMPLE_TYPE(capitalName, lowerName, properName, instanceType, jsName, prototypeBase, featureFlag) \
capitalName ## Constructor* lowerName ## Constructor = featureFlag ? capitalName ## Constructor::create(vm, capitalName ## Constructor::createStructure(vm, this, m_functionPrototype.get()), m_ ## lowerName ## Prototype.get(), m_speciesGetterSetter.get()) : nullptr; \
if (featureFlag) \
m_ ## lowerName ## Prototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, lowerName ## Constructor, static_cast<unsigned>(PropertyAttribute::DontEnum)); \
FOR_EACH_SIMPLE_BUILTIN_TYPE(CREATE_CONSTRUCTOR_FOR_SIMPLE_TYPE)
#undef CREATE_CONSTRUCTOR_FOR_SIMPLE_TYPE
m_promiseConstructor.set(vm, this, promiseConstructor);
m_internalPromiseConstructor.set(vm, this, internalPromiseConstructor);
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::Promise)].set(vm, this, promiseConstructor);
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::InternalPromise)].set(vm, this, internalPromiseConstructor);
m_evalErrorStructure.initLater(
[] (LazyClassStructure::Initializer& init) {
init.global->initializeErrorConstructor<ErrorType::EvalError>(init);
});
m_rangeErrorStructure.initLater(
[] (LazyClassStructure::Initializer& init) {
init.global->initializeErrorConstructor<ErrorType::RangeError>(init);
});
m_referenceErrorStructure.initLater(
[] (LazyClassStructure::Initializer& init) {
init.global->initializeErrorConstructor<ErrorType::ReferenceError>(init);
});
m_syntaxErrorStructure.initLater(
[] (LazyClassStructure::Initializer& init) {
init.global->initializeErrorConstructor<ErrorType::SyntaxError>(init);
});
m_typeErrorStructure.initLater(
[] (LazyClassStructure::Initializer& init) {
init.global->initializeErrorConstructor<ErrorType::TypeError>(init);
});
m_URIErrorStructure.initLater(
[] (LazyClassStructure::Initializer& init) {
init.global->initializeErrorConstructor<ErrorType::URIError>(init);
});
m_aggregateErrorStructure.initLater(
[] (LazyClassStructure::Initializer& init) {
init.global->initializeAggregateErrorConstructor(init);
});
m_generatorFunctionPrototype.set(vm, this, GeneratorFunctionPrototype::create(vm, GeneratorFunctionPrototype::createStructure(vm, this, m_functionPrototype.get())));
GeneratorFunctionConstructor* generatorFunctionConstructor = GeneratorFunctionConstructor::create(vm, GeneratorFunctionConstructor::createStructure(vm, this, functionConstructor), m_generatorFunctionPrototype.get());
m_generatorFunctionPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, generatorFunctionConstructor, PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
m_generatorFunctionStructure.set(vm, this, JSGeneratorFunction::createStructure(vm, this, m_generatorFunctionPrototype.get()));
m_generatorPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, m_generatorFunctionPrototype.get(), PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
m_generatorFunctionPrototype->putDirectWithoutTransition(vm, vm.propertyNames->prototype, m_generatorPrototype.get(), PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
m_generatorStructure.set(vm, this, JSGenerator::createStructure(vm, this, m_generatorPrototype.get()));
m_asyncFunctionPrototype.set(vm, this, AsyncFunctionPrototype::create(vm, AsyncFunctionPrototype::createStructure(vm, this, m_functionPrototype.get())));
AsyncFunctionConstructor* asyncFunctionConstructor = AsyncFunctionConstructor::create(vm, AsyncFunctionConstructor::createStructure(vm, this, functionConstructor), m_asyncFunctionPrototype.get());
m_asyncFunctionPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, asyncFunctionConstructor, PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
m_asyncFunctionStructure.set(vm, this, JSAsyncFunction::createStructure(vm, this, m_asyncFunctionPrototype.get()));
m_asyncGeneratorFunctionPrototype.set(vm, this, AsyncGeneratorFunctionPrototype::create(vm, AsyncGeneratorFunctionPrototype::createStructure(vm, this, m_functionPrototype.get())));
AsyncGeneratorFunctionConstructor* asyncGeneratorFunctionConstructor = AsyncGeneratorFunctionConstructor::create(vm, AsyncGeneratorFunctionConstructor::createStructure(vm, this, functionConstructor), m_asyncGeneratorFunctionPrototype.get());
m_asyncGeneratorFunctionPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, asyncGeneratorFunctionConstructor, PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
m_asyncGeneratorFunctionStructure.set(vm, this, JSAsyncGeneratorFunction::createStructure(vm, this, m_asyncGeneratorFunctionPrototype.get()));
m_asyncGeneratorPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, m_asyncGeneratorFunctionPrototype.get(), PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
m_asyncGeneratorFunctionPrototype->putDirectWithoutTransition(vm, vm.propertyNames->prototype, m_asyncGeneratorPrototype.get(), PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
m_asyncGeneratorStructure.set(vm, this, JSAsyncGenerator::createStructure(vm, this, m_asyncGeneratorPrototype.get()));
m_objectPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, objectConstructor, static_cast<unsigned>(PropertyAttribute::DontEnum));
m_functionPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, functionConstructor, static_cast<unsigned>(PropertyAttribute::DontEnum));
m_arrayPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, arrayConstructor, static_cast<unsigned>(PropertyAttribute::DontEnum));
m_regExpPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, regExpConstructor, static_cast<unsigned>(PropertyAttribute::DontEnum));
putDirectWithoutTransition(vm, vm.propertyNames->Object, objectConstructor, static_cast<unsigned>(PropertyAttribute::DontEnum));
putDirectWithoutTransition(vm, vm.propertyNames->Function, functionConstructor, static_cast<unsigned>(PropertyAttribute::DontEnum));
putDirectWithoutTransition(vm, vm.propertyNames->Array, arrayConstructor, static_cast<unsigned>(PropertyAttribute::DontEnum));
putDirectWithoutTransition(vm, vm.propertyNames->RegExp, regExpConstructor, static_cast<unsigned>(PropertyAttribute::DontEnum));
#if ENABLE(SHARED_ARRAY_BUFFER)
putDirectWithoutTransition(vm, vm.propertyNames->SharedArrayBuffer, sharedArrayBufferConstructor, static_cast<unsigned>(PropertyAttribute::DontEnum));
putDirectWithoutTransition(vm, Identifier::fromString(vm, "Atomics"), atomicsObject, static_cast<unsigned>(PropertyAttribute::DontEnum));
#endif
#define PUT_CONSTRUCTOR_FOR_SIMPLE_TYPE(capitalName, lowerName, properName, instanceType, jsName, prototypeBase, featureFlag) \
if (featureFlag) \
putDirectWithoutTransition(vm, vm.propertyNames-> jsName, lowerName ## Constructor, static_cast<unsigned>(PropertyAttribute::DontEnum));
FOR_EACH_SIMPLE_BUILTIN_TYPE_WITH_CONSTRUCTOR(PUT_CONSTRUCTOR_FOR_SIMPLE_TYPE)
#undef PUT_CONSTRUCTOR_FOR_SIMPLE_TYPE
m_iteratorResultObjectStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(createIteratorResultObjectStructure(init.vm, *init.owner));
});
m_evalFunction.initLater(
[] (const Initializer<JSFunction>& init) {
init.set(JSFunction::create(init.vm, init.owner, 1, init.vm.propertyNames->eval.string(), globalFuncEval, NoIntrinsic));
});
m_collatorStructure.initLater(
[] (const Initializer<Structure>& init) {
JSGlobalObject* globalObject = jsCast<JSGlobalObject*>(init.owner);
IntlCollatorPrototype* collatorPrototype = IntlCollatorPrototype::create(init.vm, globalObject, IntlCollatorPrototype::createStructure(init.vm, globalObject, globalObject->objectPrototype()));
init.set(IntlCollator::createStructure(init.vm, globalObject, collatorPrototype));
});
m_dateTimeFormatStructure.initLater(
[] (const Initializer<Structure>& init) {
JSGlobalObject* globalObject = jsCast<JSGlobalObject*>(init.owner);
IntlDateTimeFormatPrototype* dateTimeFormatPrototype = IntlDateTimeFormatPrototype::create(init.vm, globalObject, IntlDateTimeFormatPrototype::createStructure(init.vm, globalObject, globalObject->objectPrototype()));
init.set(IntlDateTimeFormat::createStructure(init.vm, globalObject, dateTimeFormatPrototype));
});
m_localeStructure.initLater(
[] (const Initializer<Structure>& init) {
JSGlobalObject* globalObject = jsCast<JSGlobalObject*>(init.owner);
IntlLocalePrototype* localePrototype = IntlLocalePrototype::create(init.vm, IntlLocalePrototype::createStructure(init.vm, globalObject, globalObject->objectPrototype()));
init.set(IntlLocale::createStructure(init.vm, globalObject, localePrototype));
});
m_numberFormatStructure.initLater(
[] (const Initializer<Structure>& init) {
JSGlobalObject* globalObject = jsCast<JSGlobalObject*>(init.owner);
IntlNumberFormatPrototype* numberFormatPrototype = IntlNumberFormatPrototype::create(init.vm, globalObject, IntlNumberFormatPrototype::createStructure(init.vm, globalObject, globalObject->objectPrototype()));
init.set(IntlNumberFormat::createStructure(init.vm, globalObject, numberFormatPrototype));
});
m_pluralRulesStructure.initLater(
[] (const Initializer<Structure>& init) {
JSGlobalObject* globalObject = jsCast<JSGlobalObject*>(init.owner);
IntlPluralRulesPrototype* pluralRulesPrototype = IntlPluralRulesPrototype::create(init.vm, globalObject, IntlPluralRulesPrototype::createStructure(init.vm, globalObject, globalObject->objectPrototype()));
init.set(IntlPluralRules::createStructure(init.vm, globalObject, pluralRulesPrototype));
});
m_relativeTimeFormatStructure.initLater(
[] (const Initializer<Structure>& init) {
JSGlobalObject* globalObject = jsCast<JSGlobalObject*>(init.owner);
IntlRelativeTimeFormatPrototype* relativeTimeFormatPrototype = IntlRelativeTimeFormatPrototype::create(init.vm, IntlRelativeTimeFormatPrototype::createStructure(init.vm, globalObject, globalObject->objectPrototype()));
init.set(IntlRelativeTimeFormat::createStructure(init.vm, globalObject, relativeTimeFormatPrototype));
});
m_defaultCollator.initLater(
[] (const Initializer<IntlCollator>& init) {
JSGlobalObject* globalObject = jsCast<JSGlobalObject*>(init.owner);
VM& vm = init.vm;
auto scope = DECLARE_CATCH_SCOPE(vm);
IntlCollator* collator = IntlCollator::create(vm, globalObject->collatorStructure());
collator->initializeCollator(globalObject, jsUndefined(), jsUndefined());
scope.releaseAssertNoException();
init.set(collator);
});
IntlObject* intl = IntlObject::create(vm, this, IntlObject::createStructure(vm, this, m_objectPrototype.get()));
putDirectWithoutTransition(vm, vm.propertyNames->Intl, intl, static_cast<unsigned>(PropertyAttribute::DontEnum));
m_moduleLoader.initLater(
[] (const Initializer<JSModuleLoader>& init) {
auto catchScope = DECLARE_CATCH_SCOPE(init.vm);
init.set(JSModuleLoader::create(init.owner, init.vm, JSModuleLoader::createStructure(init.vm, init.owner, jsNull())));
catchScope.releaseAssertNoException();
});
if (Options::exposeInternalModuleLoader())
putDirectWithoutTransition(vm, vm.propertyNames->Loader, moduleLoader(), static_cast<unsigned>(PropertyAttribute::DontEnum));
GetterSetter* regExpProtoFlagsGetter = getGetterById(this, m_regExpPrototype.get(), vm.propertyNames->flags);
catchScope.assertNoException();
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::regExpProtoFlagsGetter)].set(vm, this, regExpProtoFlagsGetter);
GetterSetter* regExpProtoGlobalGetter = getGetterById(this, m_regExpPrototype.get(), vm.propertyNames->global);
catchScope.assertNoException();
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::regExpProtoGlobalGetter)].set(vm, this, regExpProtoGlobalGetter);
GetterSetter* regExpProtoIgnoreCaseGetter = getGetterById(this, m_regExpPrototype.get(), vm.propertyNames->ignoreCase);
catchScope.assertNoException();
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::regExpProtoIgnoreCaseGetter)].set(vm, this, regExpProtoIgnoreCaseGetter);
GetterSetter* regExpProtoMultilineGetter = getGetterById(this, m_regExpPrototype.get(), vm.propertyNames->multiline);
catchScope.assertNoException();
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::regExpProtoMultilineGetter)].set(vm, this, regExpProtoMultilineGetter);
GetterSetter* regExpProtoSourceGetter = getGetterById(this, m_regExpPrototype.get(), vm.propertyNames->source);
catchScope.assertNoException();
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::regExpProtoSourceGetter)].set(vm, this, regExpProtoSourceGetter);
GetterSetter* regExpProtoStickyGetter = getGetterById(this, m_regExpPrototype.get(), vm.propertyNames->sticky);
catchScope.assertNoException();
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::regExpProtoStickyGetter)].set(vm, this, regExpProtoStickyGetter);
GetterSetter* regExpProtoUnicodeGetter = getGetterById(this, m_regExpPrototype.get(), vm.propertyNames->unicode);
catchScope.assertNoException();
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::regExpProtoUnicodeGetter)].set(vm, this, regExpProtoUnicodeGetter);
JSFunction* regExpSymbolReplace = jsCast<JSFunction*>(m_regExpPrototype->getDirect(vm, vm.propertyNames->replaceSymbol));
m_regExpProtoSymbolReplace.set(vm, this, regExpSymbolReplace);
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::regExpBuiltinExec)].set(vm, this, jsCast<JSFunction*>(m_regExpPrototype->getDirect(vm, vm.propertyNames->exec)));
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::regExpPrototypeSymbolMatch)].set(vm, this, m_regExpPrototype->getDirect(vm, vm.propertyNames->matchSymbol).asCell());
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::regExpPrototypeSymbolReplace)].set(vm, this, m_regExpPrototype->getDirect(vm, vm.propertyNames->replaceSymbol).asCell());
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::isArray)].set(vm, this, arrayConstructor->getDirect(vm, vm.propertyNames->isArray).asCell());
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::callFunction)].set(vm, this, callFunction);
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::applyFunction)].set(vm, this, applyFunction);
{
JSValue hasOwnPropertyFunction = jsCast<JSFunction*>(objectPrototype()->get(this, vm.propertyNames->hasOwnProperty));
catchScope.assertNoException();
RELEASE_ASSERT(!!jsDynamicCast<JSFunction*>(vm, hasOwnPropertyFunction));
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::hasOwnPropertyFunction)].set(vm, this, jsCast<JSFunction*>(hasOwnPropertyFunction));
}
#define INIT_PRIVATE_GLOBAL(funcName, code) \
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::funcName)].initLater([] (const Initializer<JSCell>& init) { \
JSGlobalObject* globalObject = jsCast<JSGlobalObject*>(init.owner); \
init.set(JSFunction::create(init.vm, code ## CodeGenerator(init.vm), globalObject)); \
});
JSC_FOREACH_BUILTIN_FUNCTION_PRIVATE_GLOBAL_NAME(INIT_PRIVATE_GLOBAL)
#undef INIT_PRIVATE_GLOBAL
// FIXME: Initializing them lazily.
// https://bugs.webkit.org/show_bug.cgi?id=203795
JSObject* asyncFromSyncIteratorPrototype = AsyncFromSyncIteratorPrototype::create(vm, this, AsyncFromSyncIteratorPrototype::createStructure(vm, this, m_iteratorPrototype.get()));
jsCast<JSObject*>(linkTimeConstant(LinkTimeConstant::AsyncFromSyncIterator))->putDirect(vm, vm.propertyNames->prototype, asyncFromSyncIteratorPrototype);
JSObject* regExpStringIteratorPrototype = RegExpStringIteratorPrototype::create(vm, this, RegExpStringIteratorPrototype::createStructure(vm, this, m_iteratorPrototype.get()));
jsCast<JSObject*>(linkTimeConstant(LinkTimeConstant::RegExpStringIterator))->putDirect(vm, vm.propertyNames->prototype, regExpStringIteratorPrototype);
// Map and Set helpers.
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::Set)].initLater([] (const Initializer<JSCell>& init) {
init.set(jsCast<JSGlobalObject*>(init.owner)->setConstructor());
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::mapBucketHead)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), mapPrivateFuncMapBucketHead, JSMapBucketHeadIntrinsic));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::mapBucketNext)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), mapPrivateFuncMapBucketNext, JSMapBucketNextIntrinsic));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::mapBucketKey)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), mapPrivateFuncMapBucketKey, JSMapBucketKeyIntrinsic));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::mapBucketValue)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), mapPrivateFuncMapBucketValue, JSMapBucketValueIntrinsic));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::setBucketHead)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), setPrivateFuncSetBucketHead, JSSetBucketHeadIntrinsic));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::setBucketNext)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), setPrivateFuncSetBucketNext, JSSetBucketNextIntrinsic));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::setBucketKey)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), setPrivateFuncSetBucketKey, JSSetBucketKeyIntrinsic));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::importModule)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), globalFuncImportModule));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::propertyIsEnumerable)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), globalFuncPropertyIsEnumerable));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::ownKeys)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), globalFuncOwnKeys));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::enqueueJob)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, "enqueueJob"_s, enqueueJob));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::makeTypeError)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), globalFuncMakeTypeError));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::AggregateError)].initLater([] (const Initializer<JSCell>& init) {
JSGlobalObject* globalObject = jsCast<JSGlobalObject*>(init.owner);
init.set(globalObject->m_aggregateErrorStructure.constructor(globalObject));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::typedArrayLength)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), typedArrayViewPrivateFuncLength));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::typedArrayGetOriginalConstructor)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), typedArrayViewPrivateFuncGetOriginalConstructor));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::typedArraySort)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), typedArrayViewPrivateFuncSort));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::isTypedArrayView)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), typedArrayViewPrivateFuncIsTypedArrayView, IsTypedArrayViewIntrinsic));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::typedArraySubarrayCreate)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), typedArrayViewPrivateFuncSubarrayCreate));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::isBoundFunction)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), isBoundFunction));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::hasInstanceBoundFunction)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), hasInstanceBoundFunction));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::instanceOf)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), objectPrivateFuncInstanceOf));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::BuiltinLog)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 1, String(), globalFuncBuiltinLog));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::BuiltinDescribe)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 1, String(), globalFuncBuiltinDescribe));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::trunc)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), mathProtoFuncTrunc, TruncIntrinsic));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::repeatCharacter)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 2, String(), stringProtoFuncRepeatCharacter));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::arraySpeciesCreate)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 2, String(), arrayProtoFuncSpeciesCreate));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::isArraySlow)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), arrayConstructorPrivateFuncIsArraySlow));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::concatMemcpy)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), arrayProtoPrivateFuncConcatMemcpy));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::appendMemcpy)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), arrayProtoPrivateFuncAppendMemcpy));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::hostPromiseRejectionTracker)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 2, String(), globalFuncHostPromiseRejectionTracker));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::InspectorInstrumentation)].initLater([] (const Initializer<JSCell>& init) {
JSGlobalObject* globalObject = jsCast<JSGlobalObject*>(init.owner);
init.set(InspectorInstrumentationObject::create(init.vm, globalObject, InspectorInstrumentationObject::createStructure(init.vm, globalObject, globalObject->m_objectPrototype.get())));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::thisTimeValue)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), dateProtoFuncGetTime, DatePrototypeGetTimeIntrinsic));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::sameValue)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 2, String(), objectConstructorIs, ObjectIsIntrinsic));
});
// RegExp.prototype helpers.
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::regExpCreate)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 2, String(), esSpecRegExpCreate, NoIntrinsic));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::isRegExp)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 1, String(), esSpecIsRegExp, NoIntrinsic));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::regExpMatchFast)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 1, String(), regExpProtoFuncMatchFast, RegExpMatchFastIntrinsic));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::regExpSearchFast)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 1, String(), regExpProtoFuncSearchFast));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::regExpSplitFast)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 2, String(), regExpProtoFuncSplitFast));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::regExpTestFast)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 1, String(), regExpProtoFuncTestFast, RegExpTestFastIntrinsic));
});
// String.prototype helpers.
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::stringIncludesInternal)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 1, String(), builtinStringIncludesInternal));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::stringIndexOfInternal)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 1, String(), builtinStringIndexOfInternal));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::stringSplitFast)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 2, String(), stringProtoFuncSplitFast));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::stringSubstringInternal)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 2, String(), builtinStringSubstringInternal));
});
// Function prototype helpers.
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::makeBoundFunction)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 5, String(), makeBoundFunction));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::hasOwnLengthProperty)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 1, String(), hasOwnLengthProperty));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::dateTimeFormat)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), globalFuncDateTimeFormat));
});
// PrivateSymbols / PrivateNames
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::createPrivateSymbol)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 0, String(), createPrivateSymbol));
});
#if ENABLE(WEBASSEMBLY) && ENABLE(WEBASSEMBLY_STREAMING_API)
// WebAssembly Streaming API
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::webAssemblyCompileStreamingInternal)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 1, String(), webAssemblyCompileStreamingInternal));
});
m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::webAssemblyInstantiateStreamingInternal)].initLater([] (const Initializer<JSCell>& init) {
init.set(JSFunction::create(init.vm, jsCast<JSGlobalObject*>(init.owner), 1, String(), webAssemblyInstantiateStreamingInternal));
});
#endif
if (Options::exposeProfilersOnGlobalObject()) {
#if ENABLE(SAMPLING_PROFILER)
putDirectWithoutTransition(vm, Identifier::fromString(vm, "__enableSamplingProfiler"), JSFunction::create(vm, this, 1, String(), enableSamplingProfiler), PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(vm, "__disableSamplingProfiler"), JSFunction::create(vm, this, 1, String(), disableSamplingProfiler), PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
#endif
putDirectWithoutTransition(vm, Identifier::fromString(vm, "__enableSuperSampler"), JSFunction::create(vm, this, 1, String(), enableSuperSampler), PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(vm, "__disableSuperSampler"), JSFunction::create(vm, this, 1, String(), disableSuperSampler), PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
}
GlobalPropertyInfo staticGlobals[] = {
GlobalPropertyInfo(vm.propertyNames->NaN, jsNaN(), PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly),
GlobalPropertyInfo(vm.propertyNames->Infinity, jsNumber(std::numeric_limits<double>::infinity()), PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly),
GlobalPropertyInfo(vm.propertyNames->undefinedKeyword, jsUndefined(), PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly),
#if ASSERT_ENABLED
GlobalPropertyInfo(vm.propertyNames->builtinNames().assertPrivateName(), JSFunction::create(vm, this, 1, String(), assertCall), PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly),
#endif
};
addStaticGlobals(staticGlobals, WTF_ARRAY_LENGTH(staticGlobals));
if (UNLIKELY(Options::useDollarVM()))
exposeDollarVM(vm);
#if ENABLE(WEBASSEMBLY)
if (Wasm::isSupported()) {
m_webAssemblyModuleRecordStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(WebAssemblyModuleRecord::createStructure(init.vm, init.owner, init.owner->m_objectPrototype.get()));
});
m_webAssemblyFunctionStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(WebAssemblyFunction::createStructure(init.vm, init.owner, init.owner->m_functionPrototype.get()));
});
m_jsToWasmICCalleeStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(JSToWasmICCallee::createStructure(init.vm, init.owner, jsNull()));
});
m_webAssemblyWrapperFunctionStructure.initLater(
[] (const Initializer<Structure>& init) {
init.set(WebAssemblyWrapperFunction::createStructure(init.vm, init.owner, init.owner->m_functionPrototype.get()));
});
auto* webAssembly = JSWebAssembly::create(vm, this, JSWebAssembly::createStructure(vm, this, m_objectPrototype.get()));
putDirectWithoutTransition(vm, Identifier::fromString(vm, "WebAssembly"), webAssembly, static_cast<unsigned>(PropertyAttribute::DontEnum));
#define CREATE_WEBASSEMBLY_PROTOTYPE(capitalName, lowerName, properName, instanceType, jsName, prototypeBase, featureFlag) \
if (featureFlag) {\
m_ ## properName ## Structure.initLater(\
[] (LazyClassStructure::Initializer& init) { \
init.setPrototype(capitalName##Prototype::create(init.vm, init.global, capitalName##Prototype::createStructure(init.vm, init.global, init.global->prototypeBase ## Prototype()))); \
init.setStructure(instanceType::createStructure(init.vm, init.global, init.prototype)); \
auto* constructorPrototype = strcmp(#prototypeBase, "error") == 0 ? init.global->m_errorStructure.constructor(init.global) : init.global->functionPrototype(); \
init.setConstructor(capitalName ## Constructor::create(init.vm, capitalName ## Constructor::createStructure(init.vm, init.global, constructorPrototype), jsCast<capitalName ## Prototype*>(init.prototype))); \
}); \
}
FOR_EACH_WEBASSEMBLY_CONSTRUCTOR_TYPE(CREATE_WEBASSEMBLY_PROTOTYPE)
#undef CREATE_WEBASSEMBLY_CONSTRUCTOR
}
#endif // ENABLE(WEBASSEMBLY)
#undef CREATE_PROTOTYPE_FOR_LAZY_TYPE
{
ObjectPropertyCondition condition = setupAdaptiveWatchpoint(this, arrayIteratorPrototype, vm.propertyNames->next);
m_arrayIteratorPrototypeNext = makeUnique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(this, condition, m_arrayIteratorProtocolWatchpointSet);
m_arrayIteratorPrototypeNext->install(vm);
}
{
ObjectPropertyCondition condition = setupAdaptiveWatchpoint(this, this->arrayPrototype(), vm.propertyNames->iteratorSymbol);
m_arrayPrototypeSymbolIteratorWatchpoint = makeUnique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(this, condition, m_arrayIteratorProtocolWatchpointSet);
m_arrayPrototypeSymbolIteratorWatchpoint->install(vm);
}
{
ObjectPropertyCondition condition = setupAdaptiveWatchpoint(this, this->arrayPrototype(), vm.propertyNames->join);
m_arrayPrototypeJoinWatchpoint = makeUnique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(this, condition, m_arrayJoinWatchpointSet);
m_arrayPrototypeJoinWatchpoint->install(vm);
}
{
ObjectPropertyCondition condition = setupAdaptiveWatchpoint(this, mapIteratorPrototype, vm.propertyNames->next);
m_mapIteratorPrototypeNextWatchpoint = makeUnique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(this, condition, m_mapIteratorProtocolWatchpointSet);
m_mapIteratorPrototypeNextWatchpoint->install(vm);
}
{
ObjectPropertyCondition condition = setupAdaptiveWatchpoint(this, setIteratorPrototype, vm.propertyNames->next);
m_setIteratorPrototypeNextWatchpoint = makeUnique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(this, condition, m_setIteratorProtocolWatchpointSet);
m_setIteratorPrototypeNextWatchpoint->install(vm);
}
{
ObjectPropertyCondition condition = setupAdaptiveWatchpoint(this, m_stringIteratorPrototype.get(), vm.propertyNames->next);
m_stringIteratorPrototypeNextWatchpoint = makeUnique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(this, condition, m_stringIteratorProtocolWatchpointSet);
m_stringIteratorPrototypeNextWatchpoint->install(vm);
}
{
ObjectPropertyCondition condition = setupAdaptiveWatchpoint(this, m_stringPrototype.get(), vm.propertyNames->iteratorSymbol);
m_stringPrototypeSymbolIteratorWatchpoint = makeUnique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(this, condition, m_stringIteratorProtocolWatchpointSet);
m_stringPrototypeSymbolIteratorWatchpoint->install(vm);
}
// Unfortunately, the prototype objects of the builtin objects can be touched from concurrent compilers. So eagerly initialize them only if we use JIT.
if (Options::useJIT()) {
this->booleanPrototype();
this->numberPrototype();
this->symbolPrototype();
}
fixupPrototypeChainWithObjectPrototype(vm);
}
bool JSGlobalObject::put(JSCell* cell, JSGlobalObject* globalObject, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell);
ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(thisObject));
if (UNLIKELY(isThisValueAltered(slot, thisObject)))
RELEASE_AND_RETURN(scope, ordinarySetSlow(globalObject, thisObject, propertyName, value, slot.thisValue(), slot.isStrictMode()));
bool shouldThrowReadOnlyError = slot.isStrictMode();
bool ignoreReadOnlyErrors = false;
bool putResult = false;
bool done = symbolTablePutTouchWatchpointSet(thisObject, globalObject, propertyName, value, shouldThrowReadOnlyError, ignoreReadOnlyErrors, putResult);
EXCEPTION_ASSERT((!!scope.exception() == (done && !putResult)) || !shouldThrowReadOnlyError);
if (done)
return putResult;
RELEASE_AND_RETURN(scope, Base::put(thisObject, globalObject, propertyName, value, slot));
}
bool JSGlobalObject::defineOwnProperty(JSObject* object, JSGlobalObject* globalObject, PropertyName propertyName, const PropertyDescriptor& descriptor, bool shouldThrow)
{
JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object);
PropertySlot slot(thisObject, PropertySlot::InternalMethodType::VMInquiry);
// silently ignore attempts to add accessors aliasing vars.
if (descriptor.isAccessorDescriptor() && symbolTableGet(thisObject, propertyName, slot))
return false;
return Base::defineOwnProperty(thisObject, globalObject, propertyName, descriptor, shouldThrow);
}
void JSGlobalObject::addGlobalVar(const Identifier& ident)
{
ConcurrentJSLocker locker(symbolTable()->m_lock);
SymbolTableEntry entry = symbolTable()->get(locker, ident.impl());
if (!entry.isNull())
return;
ScopeOffset offset = symbolTable()->takeNextScopeOffset(locker);
SymbolTableEntry newEntry(VarOffset(offset), 0);
newEntry.prepareToWatch();
symbolTable()->add(locker, ident.impl(), WTFMove(newEntry));
ScopeOffset offsetForAssert = addVariables(1, jsUndefined());
RELEASE_ASSERT(offsetForAssert == offset);
}
void JSGlobalObject::addFunction(JSGlobalObject* globalObject, const Identifier& propertyName)
{
VM& vm = globalObject->vm();
VM::DeletePropertyModeScope scope(vm, VM::DeletePropertyMode::IgnoreConfigurable);
JSCell::deleteProperty(this, globalObject, propertyName);
addGlobalVar(propertyName);
}
void JSGlobalObject::setGlobalScopeExtension(JSScope* scope)
{
m_globalScopeExtension.set(vm(), this, scope);
}
void JSGlobalObject::clearGlobalScopeExtension()
{
m_globalScopeExtension.clear();
}
static inline JSObject* lastInPrototypeChain(VM& vm, JSObject* object)
{
JSObject* o = object;
while (o->getPrototypeDirect(vm).isObject())
o = asObject(o->getPrototypeDirect(vm));
return o;
}
// Private namespace for helpers for JSGlobalObject::haveABadTime()
namespace {
class GlobalObjectDependencyFinder : public MarkedBlock::VoidFunctor {
public:
GlobalObjectDependencyFinder(VM& vm)
: m_vm(vm)
{ }
IterationStatus operator()(HeapCell*, HeapCell::Kind) const;
void addDependency(JSGlobalObject* key, JSGlobalObject* dependent);
HashSet<JSGlobalObject*>* dependentsFor(JSGlobalObject* key);
private:
void visit(JSObject*);
VM& m_vm;
HashMap<JSGlobalObject*, HashSet<JSGlobalObject*>> m_dependencies;
};
inline void GlobalObjectDependencyFinder::addDependency(JSGlobalObject* key, JSGlobalObject* dependent)
{
auto keyResult = m_dependencies.add(key, HashSet<JSGlobalObject*>());
keyResult.iterator->value.add(dependent);
}
inline HashSet<JSGlobalObject*>* GlobalObjectDependencyFinder::dependentsFor(JSGlobalObject* key)
{
auto iterator = m_dependencies.find(key);
if (iterator == m_dependencies.end())
return nullptr;
return &iterator->value;
}
inline void GlobalObjectDependencyFinder::visit(JSObject* object)
{
VM& vm = m_vm;
if (!object->mayBePrototype())
return;
JSObject* current = object;
JSGlobalObject* objectGlobalObject = object->globalObject(vm);
do {
JSValue prototypeValue = current->getPrototypeDirect(vm);
if (prototypeValue.isNull())
return;
current = asObject(prototypeValue);
JSGlobalObject* protoGlobalObject = current->globalObject(vm);
if (protoGlobalObject != objectGlobalObject)
addDependency(protoGlobalObject, objectGlobalObject);
} while (true);
}
IterationStatus GlobalObjectDependencyFinder::operator()(HeapCell* cell, HeapCell::Kind kind) const
{
if (isJSCellKind(kind) && static_cast<JSCell*>(cell)->isObject()) {
// FIXME: This const_cast exists because this isn't a C++ lambda.
// https://bugs.webkit.org/show_bug.cgi?id=159644
const_cast<GlobalObjectDependencyFinder*>(this)->visit(jsCast<JSObject*>(static_cast<JSCell*>(cell)));
}
return IterationStatus::Continue;
}
enum class BadTimeFinderMode {
SingleGlobal,
MultipleGlobals
};
template<BadTimeFinderMode mode>
class ObjectsWithBrokenIndexingFinder : public MarkedBlock::VoidFunctor {
public:
ObjectsWithBrokenIndexingFinder(VM&, Vector<JSObject*>&, JSGlobalObject*);
ObjectsWithBrokenIndexingFinder(VM&, Vector<JSObject*>&, HashSet<JSGlobalObject*>&);
bool needsMultiGlobalsScan() const { return m_needsMultiGlobalsScan; }
IterationStatus operator()(HeapCell*, HeapCell::Kind) const;
private:
IterationStatus visit(JSObject*);
VM& m_vm;
Vector<JSObject*>& m_foundObjects;
JSGlobalObject* m_globalObject { nullptr }; // Only used for SingleBadTimeGlobal mode.
HashSet<JSGlobalObject*>* m_globalObjects { nullptr }; // Only used for BadTimeGlobalGraph mode;
bool m_needsMultiGlobalsScan { false };
};
template<>
ObjectsWithBrokenIndexingFinder<BadTimeFinderMode::SingleGlobal>::ObjectsWithBrokenIndexingFinder(
VM& vm, Vector<JSObject*>& foundObjects, JSGlobalObject* globalObject)
: m_vm(vm)
, m_foundObjects(foundObjects)
, m_globalObject(globalObject)
{
}
template<>
ObjectsWithBrokenIndexingFinder<BadTimeFinderMode::MultipleGlobals>::ObjectsWithBrokenIndexingFinder(
VM& vm, Vector<JSObject*>& foundObjects, HashSet<JSGlobalObject*>& globalObjects)
: m_vm(vm)
, m_foundObjects(foundObjects)
, m_globalObjects(&globalObjects)
{
}
inline bool hasBrokenIndexing(IndexingType type)
{
return type && !hasSlowPutArrayStorage(type);
}
inline bool hasBrokenIndexing(JSObject* object)
{
IndexingType type = object->indexingType();
return hasBrokenIndexing(type);
}
template<BadTimeFinderMode mode>
inline IterationStatus ObjectsWithBrokenIndexingFinder<mode>::visit(JSObject* object)
{
VM& vm = m_vm;
// We only want to have a bad time in the affected global object, not in the entire
// VM. But we have to be careful, since there may be objects that claim to belong to
// a different global object that have prototypes from our global object.
auto isInAffectedGlobalObject = [&] (JSObject* object) {
JSGlobalObject* objectGlobalObject { nullptr };
bool objectMayBePrototype { false };
if (mode == BadTimeFinderMode::SingleGlobal) {
objectGlobalObject = object->globalObject(vm);
if (objectGlobalObject == m_globalObject)
return true;
objectMayBePrototype = object->mayBePrototype();
}
for (JSObject* current = object; ;) {
JSGlobalObject* currentGlobalObject = current->globalObject(vm);
if (mode == BadTimeFinderMode::SingleGlobal) {
if (objectMayBePrototype && currentGlobalObject != objectGlobalObject)
m_needsMultiGlobalsScan = true;
if (currentGlobalObject == m_globalObject)
return true;
} else {
if (m_globalObjects->contains(currentGlobalObject))
return true;
}
JSValue prototypeValue = current->getPrototypeDirect(vm);
if (prototypeValue.isNull())
return false;
current = asObject(prototypeValue);
}
RELEASE_ASSERT_NOT_REACHED();
};
if (JSFunction* function = jsDynamicCast<JSFunction*>(vm, object)) {
if (FunctionRareData* rareData = function->rareData()) {
// We only use this to cache JSFinalObjects. They do not start off with a broken indexing type.
ASSERT(!(rareData->objectAllocationStructure() && hasBrokenIndexing(rareData->objectAllocationStructure()->indexingType())));
if (Structure* structure = rareData->internalFunctionAllocationStructure()) {
if (hasBrokenIndexing(structure->indexingType())) {
bool isRelevantGlobalObject =
(mode == BadTimeFinderMode::SingleGlobal
? m_globalObject == structure->globalObject()
: m_globalObjects->contains(structure->globalObject()))
|| (structure->hasMonoProto() && !structure->storedPrototype().isNull() && isInAffectedGlobalObject(asObject(structure->storedPrototype())));
if (mode == BadTimeFinderMode::SingleGlobal && m_needsMultiGlobalsScan)
return IterationStatus::Done; // Bailing early and let the MultipleGlobals path handle everything.
if (isRelevantGlobalObject)
rareData->clearInternalFunctionAllocationProfile("have a bad time breaking internal function allocation");
}
}
}
}
// Run this filter first, since it's cheap, and ought to filter out a lot of objects.
if (!hasBrokenIndexing(object))
return IterationStatus::Continue;
if (isInAffectedGlobalObject(object))
m_foundObjects.append(object);
if (mode == BadTimeFinderMode::SingleGlobal && m_needsMultiGlobalsScan)
return IterationStatus::Done; // Bailing early and let the MultipleGlobals path handle everything.
return IterationStatus::Continue;
}
template<BadTimeFinderMode mode>
IterationStatus ObjectsWithBrokenIndexingFinder<mode>::operator()(HeapCell* cell, HeapCell::Kind kind) const
{
if (isJSCellKind(kind) && static_cast<JSCell*>(cell)->isObject()) {
// FIXME: This const_cast exists because this isn't a C++ lambda.
// https://bugs.webkit.org/show_bug.cgi?id=159644
return const_cast<ObjectsWithBrokenIndexingFinder*>(this)->visit(jsCast<JSObject*>(static_cast<JSCell*>(cell)));
}
return IterationStatus::Continue;
}
} // end private namespace for helpers for JSGlobalObject::haveABadTime()
void JSGlobalObject::fireWatchpointAndMakeAllArrayStructuresSlowPut(VM& vm)
{
if (isHavingABadTime())
return;
// Make sure that all JSArray allocations that load the appropriate structure from
// this object now load a structure that uses SlowPut.
for (unsigned i = 0; i < NumberOfArrayIndexingModes; ++i)
m_arrayStructureForIndexingShapeDuringAllocation[i].set(vm, this, originalArrayStructureForIndexingType(ArrayWithSlowPutArrayStorage));
// Same for any special array structures.
Structure* slowPutStructure;
slowPutStructure = createRegExpMatchesArraySlowPutStructure(vm, this);
m_regExpMatchesArrayStructure.set(vm, this, slowPutStructure);
slowPutStructure = ClonedArguments::createSlowPutStructure(vm, this, m_objectPrototype.get());
m_clonedArgumentsStructure.set(vm, this, slowPutStructure);
// Make sure that all allocations or indexed storage transitions that are inlining
// the assumption that it's safe to transition to a non-SlowPut array storage don't
// do so anymore.
// Note: we are deliberately firing the watchpoint here at the end only after
// making all the array structures SlowPut. This ensures that the concurrent
// JIT threads will always get the SlowPut versions of the structures if
// isHavingABadTime() returns true. The concurrent JIT relies on this.
m_havingABadTimeWatchpoint->fireAll(vm, "Having a bad time");
ASSERT(isHavingABadTime()); // The watchpoint is what tells us that we're having a bad time.
};
void JSGlobalObject::haveABadTime(VM& vm)
{
ASSERT(&vm == &this->vm());
if (isHavingABadTime())
return;
vm.structureCache.clear(); // We may be caching array structures in here.
DeferGC deferGC(vm.heap);
// Consider the following objects and prototype chains:
// O (of global G1) -> A (of global G1)
// B (of global G2) where G2 has a bad time
//
// If we set B as the prototype of A, G1 will need to have a bad time.
// See comments in Structure::mayInterceptIndexedAccesses() for why.
//
// Now, consider the following objects and prototype chains:
// O1 (of global G1) -> A1 (of global G1) -> B1 (of global G2)
// O2 (of global G2) -> A2 (of global G2)
// B2 (of global G3) where G3 has a bad time.
//
// G1 and G2 does not have a bad time, but G3 already has a bad time.
// If we set B2 as the prototype of A2, then G2 needs to have a bad time.
// Note that by induction, G1 also now needs to have a bad time because of
// O1 -> A1 -> B1.
//
// We describe this as global G1 being affected by global G2, and G2 by G3.
// Similarly, we say that G1 is dependent on G2, and G2 on G3.
// Hence, when G3 has a bad time, we need to ensure that all globals that
// are transitively dependent on it also have a bad time (G2 and G1 in this
// example).
//
// Apart from clearing the VM structure cache above, there are 2 more things
// that we have to do when globals have a bad time:
// 1. For each affected global:
// a. Fire its HaveABadTime watchpoint.
// b. Convert all of its array structures to SlowPutArrayStorage.
// 2. Make sure that all affected objects switch to the slow kind of
// indexed storage. An object is considered to be affected if it has
// indexed storage and has a prototype object which may have indexed
// accessors. If the prototype object belongs to a global having a bad
// time, then the prototype object is considered to possibly have indexed
// accessors. See comments in Structure::mayInterceptIndexedAccesses()
// for details.
//
// Note: step 1 must be completed before step 2 because step 2 relies on
// the HaveABadTime watchpoint having already been fired on all affected
// globals.
//
// In the common case, only this global will start having a bad time here,
// and no other globals are affected by it. So, we first proceed on this assumption
// with a simpler ObjectsWithBrokenIndexingFinder scan to find heap objects
// affected by this global that need to be converted to SlowPutArrayStorage.
// We'll also have the finder check for the presence of other global objects
// depending on this one.
//
// If we do discover other globals depending on this one, we'll abort this
// first ObjectsWithBrokenIndexingFinder scan because it will be insufficient
// to find all affected objects that need to be converted to SlowPutArrayStorage.
// It also does not make dependent globals have a bad time. Instead, we'll
// take a more comprehensive approach of first creating a dependency graph
// between globals, and then using that graph to determine all affected
// globals and objects. With that, we can make all affected globals have a
// bad time, and convert all affected objects to SlowPutArrayStorage.
fireWatchpointAndMakeAllArrayStructuresSlowPut(vm); // Step 1 above.
Vector<JSObject*> foundObjects;
ObjectsWithBrokenIndexingFinder<BadTimeFinderMode::SingleGlobal> finder(vm, foundObjects, this);
{
HeapIterationScope iterationScope(vm.heap);
vm.heap.objectSpace().forEachLiveCell(iterationScope, finder); // Attempt step 2 above.
}
if (finder.needsMultiGlobalsScan()) {
foundObjects.clear();
// Find all globals that will also have a bad time as a side effect of
// this global having a bad time.
GlobalObjectDependencyFinder dependencies(vm);
{
HeapIterationScope iterationScope(vm.heap);
vm.heap.objectSpace().forEachLiveCell(iterationScope, dependencies);
}
HashSet<JSGlobalObject*> globalsHavingABadTime;
Deque<JSGlobalObject*> globals;
globals.append(this);
while (!globals.isEmpty()) {
JSGlobalObject* global = globals.takeFirst();
global->fireWatchpointAndMakeAllArrayStructuresSlowPut(vm); // Step 1 above.
auto result = globalsHavingABadTime.add(global);
if (result.isNewEntry) {
if (HashSet<JSGlobalObject*>* dependents = dependencies.dependentsFor(global)) {
for (JSGlobalObject* dependentGlobal : *dependents)
globals.append(dependentGlobal);
}
}
}
ObjectsWithBrokenIndexingFinder<BadTimeFinderMode::MultipleGlobals> finder(vm, foundObjects, globalsHavingABadTime);
{
HeapIterationScope iterationScope(vm.heap);
vm.heap.objectSpace().forEachLiveCell(iterationScope, finder); // Step 2 above.
}
}
while (!foundObjects.isEmpty()) {
JSObject* object = asObject(foundObjects.last());
foundObjects.removeLast();
ASSERT(hasBrokenIndexing(object));
object->switchToSlowPutArrayStorage(vm);
}
}
void JSGlobalObject::fixupPrototypeChainWithObjectPrototype(VM& vm)
{
JSObject* oldLastInPrototypeChain = lastInPrototypeChain(vm, this);
JSObject* objectPrototype = m_objectPrototype.get();
if (oldLastInPrototypeChain != objectPrototype)
oldLastInPrototypeChain->setPrototypeDirect(vm, objectPrototype);
}
// Set prototype, and also insert the object prototype at the end of the chain.
void JSGlobalObject::resetPrototype(VM& vm, JSValue prototype)
{
if (getPrototypeDirect(vm) == prototype)
return;
setPrototypeDirect(vm, prototype);
fixupPrototypeChainWithObjectPrototype(vm);
// Whenever we change the prototype of the global object, we need to create a new JSProxy with the correct prototype.
setGlobalThis(vm, JSProxy::create(vm, JSProxy::createStructure(vm, this, prototype, PureForwardingProxyType), this));
}
void JSGlobalObject::visitChildren(JSCell* cell, SlotVisitor& visitor)
{
JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
visitor.append(thisObject->m_globalThis);
visitor.append(thisObject->m_globalLexicalEnvironment);
visitor.append(thisObject->m_globalScopeExtension);
visitor.append(thisObject->m_globalCallee);
visitor.append(thisObject->m_stackOverflowFrameCallee);
thisObject->m_evalErrorStructure.visit(visitor);
thisObject->m_rangeErrorStructure.visit(visitor);
thisObject->m_referenceErrorStructure.visit(visitor);
thisObject->m_syntaxErrorStructure.visit(visitor);
thisObject->m_typeErrorStructure.visit(visitor);
thisObject->m_URIErrorStructure.visit(visitor);
thisObject->m_aggregateErrorStructure.visit(visitor);
visitor.append(thisObject->m_arrayConstructor);
visitor.append(thisObject->m_regExpConstructor);
visitor.append(thisObject->m_objectConstructor);
visitor.append(thisObject->m_functionConstructor);
visitor.append(thisObject->m_promiseConstructor);
visitor.append(thisObject->m_internalPromiseConstructor);
thisObject->m_defaultCollator.visit(visitor);
thisObject->m_collatorStructure.visit(visitor);
thisObject->m_dateTimeFormatStructure.visit(visitor);
thisObject->m_numberFormatStructure.visit(visitor);
thisObject->m_localeStructure.visit(visitor);
thisObject->m_pluralRulesStructure.visit(visitor);
thisObject->m_relativeTimeFormatStructure.visit(visitor);
visitor.append(thisObject->m_nullGetterFunction);
visitor.append(thisObject->m_nullSetterFunction);
visitor.append(thisObject->m_nullSetterStrictFunction);
thisObject->m_parseIntFunction.visit(visitor);
thisObject->m_parseFloatFunction.visit(visitor);
thisObject->m_arrayProtoToStringFunction.visit(visitor);
thisObject->m_arrayProtoValuesFunction.visit(visitor);
thisObject->m_evalFunction.visit(visitor);
thisObject->m_iteratorProtocolFunction.visit(visitor);
thisObject->m_promiseResolveFunction.visit(visitor);
visitor.append(thisObject->m_objectProtoValueOfFunction);
thisObject->m_numberProtoToStringFunction.visit(visitor);
visitor.append(thisObject->m_functionProtoHasInstanceSymbolFunction);
thisObject->m_throwTypeErrorGetterSetter.visit(visitor);
visitor.append(thisObject->m_regExpProtoSymbolReplace);
visitor.append(thisObject->m_throwTypeErrorArgumentsCalleeAndCallerGetterSetter);
thisObject->m_moduleLoader.visit(visitor);
visitor.append(thisObject->m_objectPrototype);
visitor.append(thisObject->m_functionPrototype);
visitor.append(thisObject->m_arrayPrototype);
visitor.append(thisObject->m_iteratorPrototype);
visitor.append(thisObject->m_generatorFunctionPrototype);
visitor.append(thisObject->m_generatorPrototype);
visitor.append(thisObject->m_arrayIteratorPrototype);
visitor.append(thisObject->m_mapIteratorPrototype);
visitor.append(thisObject->m_setIteratorPrototype);
visitor.append(thisObject->m_asyncFunctionPrototype);
visitor.append(thisObject->m_asyncGeneratorPrototype);
visitor.append(thisObject->m_asyncIteratorPrototype);
visitor.append(thisObject->m_asyncGeneratorFunctionPrototype);
thisObject->m_debuggerScopeStructure.visit(visitor);
thisObject->m_withScopeStructure.visit(visitor);
thisObject->m_strictEvalActivationStructure.visit(visitor);
visitor.append(thisObject->m_lexicalEnvironmentStructure);
thisObject->m_moduleEnvironmentStructure.visit(visitor);
visitor.append(thisObject->m_directArgumentsStructure);
visitor.append(thisObject->m_scopedArgumentsStructure);
visitor.append(thisObject->m_clonedArgumentsStructure);
visitor.append(thisObject->m_objectStructureForObjectConstructor);
for (unsigned i = 0; i < NumberOfArrayIndexingModes; ++i)
visitor.append(thisObject->m_originalArrayStructureForIndexingShape[i]);
for (unsigned i = 0; i < NumberOfArrayIndexingModes; ++i)
visitor.append(thisObject->m_arrayStructureForIndexingShapeDuringAllocation[i]);
thisObject->m_callbackConstructorStructure.visit(visitor);
thisObject->m_callbackFunctionStructure.visit(visitor);
thisObject->m_callbackObjectStructure.visit(visitor);
#if JSC_OBJC_API_ENABLED
thisObject->m_objcCallbackFunctionStructure.visit(visitor);
thisObject->m_objcWrapperObjectStructure.visit(visitor);
#endif
#ifdef JSC_GLIB_API_ENABLED
thisObject->m_glibCallbackFunctionStructure.visit(visitor);
thisObject->m_glibWrapperObjectStructure.visit(visitor);
#endif
visitor.append(thisObject->m_nullPrototypeObjectStructure);
visitor.append(thisObject->m_calleeStructure);
visitor.append(thisObject->m_hostFunctionStructure);
auto visitFunctionStructures = [&] (FunctionStructures& structures) {
visitor.append(structures.arrowFunctionStructure);
visitor.append(structures.sloppyFunctionStructure);
visitor.append(structures.strictFunctionStructure);
};
visitFunctionStructures(thisObject->m_builtinFunctions);
visitFunctionStructures(thisObject->m_ordinaryFunctions);
thisObject->m_customGetterSetterFunctionStructure.visit(visitor);
thisObject->m_boundFunctionStructure.visit(visitor);
thisObject->m_nativeStdFunctionStructure.visit(visitor);
visitor.append(thisObject->m_regExpStructure);
visitor.append(thisObject->m_generatorFunctionStructure);
visitor.append(thisObject->m_asyncFunctionStructure);
visitor.append(thisObject->m_asyncGeneratorFunctionStructure);
visitor.append(thisObject->m_generatorStructure);
visitor.append(thisObject->m_asyncGeneratorStructure);
visitor.append(thisObject->m_arrayIteratorStructure);
visitor.append(thisObject->m_mapIteratorStructure);
visitor.append(thisObject->m_setIteratorStructure);
thisObject->m_iteratorResultObjectStructure.visit(visitor);
visitor.append(thisObject->m_regExpMatchesArrayStructure);
thisObject->m_moduleRecordStructure.visit(visitor);
thisObject->m_moduleNamespaceObjectStructure.visit(visitor);
thisObject->m_proxyObjectStructure.visit(visitor);
thisObject->m_callableProxyObjectStructure.visit(visitor);
thisObject->m_proxyRevokeStructure.visit(visitor);
for (auto& property : thisObject->m_linkTimeConstants)
property.visit(visitor);
#if ENABLE(SHARED_ARRAY_BUFFER)
visitor.append(thisObject->m_sharedArrayBufferPrototype);
visitor.append(thisObject->m_sharedArrayBufferStructure);
#endif
#define VISIT_SIMPLE_TYPE(CapitalName, lowerName, properName, instanceType, jsName, prototypeBase, featureFlag) if (featureFlag) { \
visitor.append(thisObject->m_ ## lowerName ## Prototype); \
visitor.append(thisObject->m_ ## properName ## Structure); \
}
FOR_EACH_SIMPLE_BUILTIN_TYPE(VISIT_SIMPLE_TYPE)
FOR_EACH_BUILTIN_DERIVED_ITERATOR_TYPE(VISIT_SIMPLE_TYPE)
#define VISIT_LAZY_TYPE(CapitalName, lowerName, properName, instanceType, jsName, prototypeBase, featureFlag) if (featureFlag) \
thisObject->m_ ## properName ## Structure.visit(visitor);
FOR_EACH_LAZY_BUILTIN_TYPE(VISIT_LAZY_TYPE)
#if ENABLE(WEBASSEMBLY)
thisObject->m_webAssemblyModuleRecordStructure.visit(visitor);
thisObject->m_webAssemblyFunctionStructure.visit(visitor);
thisObject->m_jsToWasmICCalleeStructure.visit(visitor);
thisObject->m_webAssemblyWrapperFunctionStructure.visit(visitor);
FOR_EACH_WEBASSEMBLY_CONSTRUCTOR_TYPE(VISIT_LAZY_TYPE)
#endif // ENABLE(WEBASSEMBLY)
#undef VISIT_SIMPLE_TYPE
#undef VISIT_LAZY_TYPE
for (unsigned i = NumberOfTypedArrayTypes; i--;)
thisObject->lazyTypedArrayStructure(indexToTypedArrayType(i)).visit(visitor);
visitor.append(thisObject->m_speciesGetterSetter);
thisObject->m_typedArrayProto.visit(visitor);
thisObject->m_typedArraySuperConstructor.visit(visitor);
thisObject->m_regExpGlobalData.visitAggregate(visitor);
}
CallFrame* JSGlobalObject::deprecatedCallFrameForDebugger()
{
return CallFrame::create(m_deprecatedCallFrameForDebugger);
}
void JSGlobalObject::exposeDollarVM(VM& vm)
{
RELEASE_ASSERT(g_jscConfig.restrictedOptionsEnabled && Options::useDollarVM());
if (hasOwnProperty(this, vm.propertyNames->builtinNames().dollarVMPrivateName()))
return;
JSDollarVM* dollarVM = JSDollarVM::create(vm, JSDollarVM::createStructure(vm, this, m_objectPrototype.get()));
GlobalPropertyInfo extraStaticGlobals[] = {
GlobalPropertyInfo(vm.propertyNames->builtinNames().dollarVMPrivateName(), dollarVM, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly),
};
addStaticGlobals(extraStaticGlobals, WTF_ARRAY_LENGTH(extraStaticGlobals));
putDirect(vm, Identifier::fromString(vm, "$vm"), dollarVM, static_cast<unsigned>(PropertyAttribute::DontEnum));
}
void JSGlobalObject::addStaticGlobals(GlobalPropertyInfo* globals, int count)
{
ScopeOffset startOffset = addVariables(count, jsUndefined());
for (int i = 0; i < count; ++i) {
GlobalPropertyInfo& global = globals[i];
// This `configurable = false` is necessary condition for static globals,
// otherwise lexical bindings can change the result of GlobalVar queries too.
// We won't be able to declare a global lexical variable with the sanem name to
// the static globals because configurable = false.
ASSERT(global.attributes & PropertyAttribute::DontDelete);
WatchpointSet* watchpointSet = nullptr;
WriteBarrierBase<Unknown>* variable = nullptr;
{
ConcurrentJSLocker locker(symbolTable()->m_lock);
ScopeOffset offset = symbolTable()->takeNextScopeOffset(locker);
RELEASE_ASSERT(offset == startOffset + i);
SymbolTableEntry newEntry(VarOffset(offset), global.attributes);
newEntry.prepareToWatch();
watchpointSet = newEntry.watchpointSet();
symbolTable()->add(locker, global.identifier.impl(), WTFMove(newEntry));
variable = &variableAt(offset);
}
symbolTablePutTouchWatchpointSet(vm(), this, global.identifier, global.value, variable, watchpointSet);
}
}
bool JSGlobalObject::getOwnPropertySlot(JSObject* object, JSGlobalObject* globalObject, PropertyName propertyName, PropertySlot& slot)
{
if (Base::getOwnPropertySlot(object, globalObject, propertyName, slot))
return true;
return symbolTableGet(jsCast<JSGlobalObject*>(object), propertyName, slot);
}
void JSGlobalObject::clearRareData(JSCell* cell)
{
jsCast<JSGlobalObject*>(cell)->m_rareData = nullptr;
}
void JSGlobalObject::tryInstallArraySpeciesWatchpoint()
{
RELEASE_ASSERT(!m_arrayPrototypeConstructorWatchpoint);
RELEASE_ASSERT(!m_arrayConstructorSpeciesWatchpoint);
VM& vm = this->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
// First we need to make sure that the Array.prototype.constructor property points to Array
// and that Array[Symbol.species] is the primordial GetterSetter.
ArrayPrototype* arrayPrototype = this->arrayPrototype();
// We only initialize once so flattening the structures does not have any real cost.
Structure* prototypeStructure = arrayPrototype->structure(vm);
if (prototypeStructure->isDictionary())
prototypeStructure = prototypeStructure->flattenDictionaryStructure(vm, arrayPrototype);
RELEASE_ASSERT(!prototypeStructure->isDictionary());
ArrayConstructor* arrayConstructor = this->arrayConstructor();
auto invalidateWatchpoint = [&] {
m_arraySpeciesWatchpointSet.invalidate(vm, StringFireDetail("Was not able to set up array species watchpoint."));
};
PropertySlot constructorSlot(arrayPrototype, PropertySlot::InternalMethodType::VMInquiry);
arrayPrototype->getOwnPropertySlot(arrayPrototype, this, vm.propertyNames->constructor, constructorSlot);
scope.assertNoException();
if (constructorSlot.slotBase() != arrayPrototype
|| !constructorSlot.isCacheableValue()
|| constructorSlot.getValue(this, vm.propertyNames->constructor) != arrayConstructor) {
invalidateWatchpoint();
return;
}
Structure* constructorStructure = arrayConstructor->structure(vm);
if (constructorStructure->isDictionary())
constructorStructure = constructorStructure->flattenDictionaryStructure(vm, arrayConstructor);
PropertySlot speciesSlot(arrayConstructor, PropertySlot::InternalMethodType::VMInquiry);
arrayConstructor->getOwnPropertySlot(arrayConstructor, this, vm.propertyNames->speciesSymbol, speciesSlot);
scope.assertNoException();
if (speciesSlot.slotBase() != arrayConstructor
|| !speciesSlot.isCacheableGetter()
|| speciesSlot.getterSetter() != speciesGetterSetter()) {
invalidateWatchpoint();
return;
}
// Now we need to setup the watchpoints to make sure these conditions remain valid.
prototypeStructure->startWatchingPropertyForReplacements(vm, constructorSlot.cachedOffset());
constructorStructure->startWatchingPropertyForReplacements(vm, speciesSlot.cachedOffset());
ObjectPropertyCondition constructorCondition = ObjectPropertyCondition::equivalence(vm, arrayPrototype, arrayPrototype, vm.propertyNames->constructor.impl(), arrayConstructor);
ObjectPropertyCondition speciesCondition = ObjectPropertyCondition::equivalence(vm, arrayPrototype, arrayConstructor, vm.propertyNames->speciesSymbol.impl(), speciesGetterSetter());
if (!constructorCondition.isWatchable() || !speciesCondition.isWatchable()) {
invalidateWatchpoint();
return;
}
// We only watch this from the DFG, and the DFG makes sure to only start watching if the watchpoint is in the IsWatched state.
RELEASE_ASSERT(!m_arraySpeciesWatchpointSet.isBeingWatched());
m_arraySpeciesWatchpointSet.touch(vm, "Set up array species watchpoint.");
m_arrayPrototypeConstructorWatchpoint = makeUnique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(this, constructorCondition, m_arraySpeciesWatchpointSet);
m_arrayPrototypeConstructorWatchpoint->install(vm);
m_arrayConstructorSpeciesWatchpoint = makeUnique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(this, speciesCondition, m_arraySpeciesWatchpointSet);
m_arrayConstructorSpeciesWatchpoint->install(vm);
}
void JSGlobalObject::installNumberPrototypeWatchpoint(NumberPrototype* numberPrototype)
{
VM& vm = this->vm();
ASSERT(m_numberToStringWatchpointSet.isStillValid());
ObjectPropertyCondition condition = setupAdaptiveWatchpoint(this, numberPrototype, vm.propertyNames->toString);
m_numberPrototypeToStringWatchpoint = makeUnique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(this, condition, m_numberToStringWatchpointSet);
m_numberPrototypeToStringWatchpoint->install(vm);
}
void JSGlobalObject::installMapPrototypeWatchpoint(MapPrototype* mapPrototype)
{
VM& vm = this->vm();
if (m_mapIteratorProtocolWatchpointSet.isStillValid()) {
ObjectPropertyCondition condition = setupAdaptiveWatchpoint(this, mapPrototype, vm.propertyNames->iteratorSymbol);
m_mapPrototypeSymbolIteratorWatchpoint = makeUnique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(this, condition, m_mapIteratorProtocolWatchpointSet);
m_mapPrototypeSymbolIteratorWatchpoint->install(vm);
}
ASSERT(m_mapSetWatchpointSet.isStillValid());
ObjectPropertyCondition condition = setupAdaptiveWatchpoint(this, mapPrototype, vm.propertyNames->set);
m_mapPrototypeSetWatchpoint = makeUnique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(this, condition, m_mapSetWatchpointSet);
m_mapPrototypeSetWatchpoint->install(vm);
}
void JSGlobalObject::installSetPrototypeWatchpoint(SetPrototype* setPrototype)
{
VM& vm = this->vm();
if (m_setIteratorProtocolWatchpointSet.isStillValid()) {
ObjectPropertyCondition condition = setupAdaptiveWatchpoint(this, setPrototype, vm.propertyNames->iteratorSymbol);
m_setPrototypeSymbolIteratorWatchpoint = makeUnique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(this, condition, m_setIteratorProtocolWatchpointSet);
m_setPrototypeSymbolIteratorWatchpoint->install(vm);
}
ASSERT(m_setAddWatchpointSet.isStillValid());
ObjectPropertyCondition condition = setupAdaptiveWatchpoint(this, setPrototype, vm.propertyNames->add);
m_setPrototypeAddWatchpoint = makeUnique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(this, condition, m_setAddWatchpointSet);
m_setPrototypeAddWatchpoint->install(vm);
}
void slowValidateCell(JSGlobalObject* globalObject)
{
RELEASE_ASSERT(globalObject->isGlobalObject());
ASSERT_GC_OBJECT_INHERITS(globalObject, JSGlobalObject::info());
}
void JSGlobalObject::setRemoteDebuggingEnabled(bool enabled)
{
#if ENABLE(REMOTE_INSPECTOR)
m_inspectorDebuggable->setRemoteDebuggingAllowed(enabled);
#else
UNUSED_PARAM(enabled);
#endif
}
bool JSGlobalObject::remoteDebuggingEnabled() const
{
#if ENABLE(REMOTE_INSPECTOR)
return m_inspectorDebuggable->remoteDebuggingAllowed();
#else
return false;
#endif
}
void JSGlobalObject::setIsITML()
{
#if ENABLE(REMOTE_INSPECTOR)
m_inspectorDebuggable->setIsITML();
#endif
}
void JSGlobalObject::setName(const String& name)
{
m_name = name;
#if ENABLE(REMOTE_INSPECTOR)
m_inspectorDebuggable->update();
#endif
}
void JSGlobalObject::bumpGlobalLexicalBindingEpoch(VM& vm)
{
if (++m_globalLexicalBindingEpoch == Options::thresholdForGlobalLexicalBindingEpoch()) {
// Since the epoch overflows, we should rewrite all the CodeBlock to adjust to the newly started generation.
m_globalLexicalBindingEpoch = 1;
vm.heap.codeBlockSet().iterate([&] (CodeBlock* codeBlock) {
if (codeBlock->globalObject() != this)
return;
codeBlock->notifyLexicalBindingUpdate();
});
}
}
void JSGlobalObject::queueMicrotask(Ref<Microtask>&& task)
{
if (globalObjectMethodTable()->queueTaskToEventLoop) {
globalObjectMethodTable()->queueTaskToEventLoop(*this, WTFMove(task));
return;
}
vm().queueMicrotask(*this, WTFMove(task));
}
void JSGlobalObject::setDebugger(Debugger* debugger)
{
m_debugger = debugger;
if (debugger)
vm().ensureShadowChicken();
}
bool JSGlobalObject::hasDebugger() const
{
return m_debugger;
}
bool JSGlobalObject::hasInteractiveDebugger() const
{
return m_debugger && m_debugger->isInteractivelyDebugging();
}
#if ENABLE(DFG_JIT)
WatchpointSet* JSGlobalObject::getReferencedPropertyWatchpointSet(UniquedStringImpl* uid)
{
ConcurrentJSLocker locker(m_referencedGlobalPropertyWatchpointSetsLock);
return m_referencedGlobalPropertyWatchpointSets.get(uid);
}
WatchpointSet& JSGlobalObject::ensureReferencedPropertyWatchpointSet(UniquedStringImpl* uid)
{
ConcurrentJSLocker locker(m_referencedGlobalPropertyWatchpointSetsLock);
return m_referencedGlobalPropertyWatchpointSets.ensure(uid, [] {
return WatchpointSet::create(IsWatched);
}).iterator->value.get();
}
#endif
JSGlobalObject* JSGlobalObject::create(VM& vm, Structure* structure)
{
JSGlobalObject* globalObject = new (NotNull, allocateCell<JSGlobalObject>(vm.heap)) JSGlobalObject(vm, structure);
globalObject->finishCreation(vm);
return globalObject;
}
void JSGlobalObject::finishCreation(VM& vm)
{
Base::finishCreation(vm);
structure(vm)->setGlobalObject(vm, this);
m_runtimeFlags = m_globalObjectMethodTable->javaScriptRuntimeFlags(this);
init(vm);
setGlobalThis(vm, JSProxy::create(vm, JSProxy::createStructure(vm, this, getPrototypeDirect(vm), PureForwardingProxyType), this));
ASSERT(type() == GlobalObjectType);
}
void JSGlobalObject::finishCreation(VM& vm, JSObject* thisValue)
{
Base::finishCreation(vm);
structure(vm)->setGlobalObject(vm, this);
m_runtimeFlags = m_globalObjectMethodTable->javaScriptRuntimeFlags(this);
init(vm);
setGlobalThis(vm, thisValue);
ASSERT(type() == GlobalObjectType);
}
#ifdef JSC_GLIB_API_ENABLED
void JSGlobalObject::setWrapperMap(std::unique_ptr<WrapperMap>&& map)
{
m_wrapperMap = WTFMove(map);
}
#endif
} // namespace JSC