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/*
* Copyright (C) 2015-2026 Apple Inc. All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "JSDollarVM.h"
#include "AccessCase.h"
#include "ArrayPrototype.h"
#include "BuiltinNames.h"
#include "CachedCall.h"
#include "CharacterPropertyDataGenerator.h"
#include "CodeBlock.h"
#include "Completion.h"
#include "ControlFlowProfiler.h"
#include "DOMAttributeGetterSetter.h"
#include "DOMJITCallDOMGetterSnippet.h"
#include "DOMJITGetterSetter.h"
#include "Debugger.h"
#include "ExecutableBaseInlines.h"
#include "FastMallocAlignedMemoryAllocator.h"
#include "FrameTracers.h"
#include "FunctionCodeBlock.h"
#include "GetterSetter.h"
#include "HeapProfiler.h"
#include "HeapSnapshotBuilder.h"
#include "InitializeThreading.h"
#include "InterpreterInlines.h"
#include "JITSizeStatistics.h"
#include "JSArray.h"
#include "JSCInlines.h"
#include "JSGlobalProxyInlines.h"
#include "JSONObject.h"
#include "JSPromise.h"
#include "JSString.h"
#include "LinkBuffer.h"
#include "NativeCallee.h"
#include "ObjectConstructor.h"
#include "ObjectPropertyCondition.h"
#include "OperationResult.h"
#include "Options.h"
#include "Parser.h"
#include "ProbeContext.h"
#include "PropertyInlineCacheClearingWatchpoint.h"
#include "Scribble.h"
#include "ShadowChicken.h"
#include "Snippet.h"
#include "SnippetParams.h"
#include "Strong.h"
#include "StructureCreateInlines.h"
#include "TypeProfiler.h"
#include "TypeProfilerLog.h"
#include "VMEntryScopeInlines.h"
#include "VMInspector.h"
#include "VMTrapsInlines.h"
#include "WasmCapabilities.h"
#include <bmalloc/BPlatform.h>
#include <unicode/uversion.h>
#include <wtf/ApproximateTime.h>
#include <wtf/CPUTime.h>
#include <wtf/DataLog.h>
#include <wtf/Language.h>
#include <wtf/MemoryPressureHandler.h>
#include <wtf/ProcessID.h>
#include <wtf/StringPrintStream.h>
#include <wtf/TZoneMallocInlines.h>
#include <wtf/TimeZone.h>
#include <wtf/WTFProcess.h>
#include <wtf/unicode/icu/ICUHelpers.h>
#if BUSE(LIBPAS)
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
#include <bmalloc/pas_debug_spectrum.h>
#include <bmalloc/pas_fd_stream.h>
#include <bmalloc/pas_heap_lock.h>
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
#endif
#if ENABLE(WEBASSEMBLY)
#include "JSWebAssemblyHelpers.h"
#include "JSWebAssemblyStruct.h"
#include "WasmModuleInformation.h"
#include "WasmStreamingCompiler.h"
#include "WasmStreamingParser.h"
#include "WasmTypeDefinition.h"
#endif
#if ENABLE(WEBASSEMBLY_DEBUGGER)
#include "WasmDebugServer.h"
#endif
#if PLATFORM(COCOA)
#include <wtf/cocoa/CrashReporter.h>
#endif
using namespace JSC;
IGNORE_WARNINGS_BEGIN("frame-address")
extern "C" void SYSV_ABI ctiMasmProbeTrampoline();
namespace JSC {
// This class is only here as a simple way to grant JSDollarVM friend privileges
// to all the classes that it needs special access to.
class JSDollarVMHelper {
public:
JSDollarVMHelper(VM& vm)
: m_vm(vm)
{ }
void updateVMStackLimits() { return m_vm.updateStackLimits(); };
static void setOwnerIsDead(GCAwareJITStubRoutine& stub) { stub.m_ownerIsDead = true; }
VM& m_vm;
};
} // namespace JSC
namespace {
static JSC_DECLARE_HOST_FUNCTION(functionDOMJITGetterComplexEnableException);
static JSC_DECLARE_HOST_FUNCTION(functionDOMJITFunctionObjectWithTypeCheck);
static JSC_DECLARE_HOST_FUNCTION(functionDOMJITCheckJSCastObjectWithTypeCheck);
// We must RELEASE_ASSERT(Options::useDollarVM()) in all JSDollarVM functions
// that are non-trivial at an eye's glance. This includes (but is not limited to):
// constructors
// create() factory
// createStructure() factory
// finishCreation()
// HOST_CALL or operation functions
// Constructors and methods of utility and test classes
// lambda functions
//
// The way to do this RELEASE_ASSERT is with the DollarVMAssertScope below.
//
// The only exception are some constexpr constructors used for instantiating
// globals (since these must have trivial constructors) e.g. DOMJITAttribute.
// Instead, these constructors should always be ALWAYS_INLINE.
class JSDollarVMCallFrame : public JSNonFinalObject {
using Base = JSNonFinalObject;
public:
template<typename CellType, SubspaceAccess>
static CompleteSubspace* LEGACY_NODELETE subspaceFor(VM& vm)
{
return &vm.cellSpace();
}
JSDollarVMCallFrame(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
static JSDollarVMCallFrame* create(JSGlobalObject* globalObject, CallFrame* callFrame, unsigned requestedFrameIndex)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
Structure* structure = createStructure(vm, globalObject, jsNull());
JSDollarVMCallFrame* frame = new (NotNull, allocateCell<JSDollarVMCallFrame>(vm)) JSDollarVMCallFrame(vm, structure);
frame->finishCreation(vm, callFrame, requestedFrameIndex);
return frame;
}
void finishCreation(VM& vm, CallFrame* callFrame, unsigned requestedFrameIndex)
{
DollarVMAssertScope assertScope;
Base::finishCreation(vm);
auto addProperty = [&] (VM& vm, ASCIILiteral name, JSValue value) {
DollarVMAssertScope assertScope;
JSDollarVMCallFrame::addProperty(vm, name, value);
};
unsigned frameIndex = 0;
bool isValid = false;
StackVisitor::visit(callFrame, vm, [&] (StackVisitor& visitor) {
DollarVMAssertScope assertScope;
if (frameIndex++ != requestedFrameIndex)
return IterationStatus::Continue;
addProperty(vm, "name"_s, jsString(vm, visitor->functionName()));
if (visitor->callee().isCell())
addProperty(vm, "callee"_s, visitor->callee().asCell());
CodeBlock* codeBlock = visitor->codeBlock();
if (codeBlock) {
addProperty(vm, "codeBlock"_s, codeBlock);
addProperty(vm, "unlinkedCodeBlock"_s, codeBlock->unlinkedCodeBlock());
addProperty(vm, "executable"_s, codeBlock->ownerExecutable());
}
isValid = true;
return IterationStatus::Done;
});
addProperty(vm, "valid"_s, jsBoolean(isValid));
}
DECLARE_INFO;
private:
void addProperty(VM& vm, ASCIILiteral name, JSValue value)
{
DollarVMAssertScope assertScope;
Identifier identifier = Identifier::fromString(vm, name);
putDirect(vm, identifier, value);
}
};
const ClassInfo JSDollarVMCallFrame::s_info = { "CallFrame"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSDollarVMCallFrame) };
class ElementHandleOwner;
class Root;
class Element : public JSNonFinalObject {
public:
Element(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
typedef JSNonFinalObject Base;
template<typename CellType, SubspaceAccess>
static CompleteSubspace* LEGACY_NODELETE subspaceFor(VM& vm)
{
return &vm.cellSpace();
}
Root* LEGACY_NODELETE root() const { return m_root.get(); }
void setRoot(VM& vm, Root* root) { m_root.set(vm, this, root); }
static Element* create(VM& vm, JSGlobalObject* globalObject, Root* root)
{
DollarVMAssertScope assertScope;
Structure* structure = createStructure(vm, globalObject, jsNull());
Element* element = new (NotNull, allocateCell<Element>(vm)) Element(vm, structure);
element->finishCreation(vm, root);
return element;
}
void finishCreation(VM&, Root*);
DECLARE_VISIT_CHILDREN;
static ElementHandleOwner* handleOwner();
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
DECLARE_INFO;
private:
WriteBarrier<Root> m_root;
};
template<typename Visitor>
void Element::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
DollarVMAssertScope assertScope;
Element* thisObject = uncheckedDowncast<Element>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
visitor.append(thisObject->m_root);
}
DEFINE_VISIT_CHILDREN(Element);
class ElementHandleOwner final : public WeakHandleOwner {
WTF_MAKE_TZONE_ALLOCATED(ElementHandleOwner);
public:
bool isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, AbstractSlotVisitor& visitor, ASCIILiteral* reason) final
{
DollarVMAssertScope assertScope;
if (reason) [[unlikely]]
*reason = "JSC::Element is opaque root"_s;
Element* element = uncheckedDowncast<Element>(handle.slot()->asCell());
return visitor.containsOpaqueRoot(element->root());
}
};
WTF_MAKE_TZONE_ALLOCATED_IMPL(ElementHandleOwner);
class Root final : public JSDestructibleObject {
public:
using Base = JSDestructibleObject;
template<typename CellType, SubspaceAccess>
static CompleteSubspace* LEGACY_NODELETE subspaceFor(VM& vm)
{
return &vm.destructibleObjectSpace();
}
Root(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
Element* LEGACY_NODELETE element()
{
return m_element.get();
}
void setElement(Element* element)
{
DollarVMAssertScope assertScope;
Weak<Element> newElement(element, Element::handleOwner());
m_element.swap(newElement);
}
static Root* create(VM& vm, JSGlobalObject* globalObject)
{
DollarVMAssertScope assertScope;
Structure* structure = createStructure(vm, globalObject, jsNull());
Root* root = new (NotNull, allocateCell<Root>(vm)) Root(vm, structure);
root->finishCreation(vm);
return root;
}
static void destroy(JSCell* cell)
{
DollarVMAssertScope assertScope;
static_cast<Root*>(cell)->Root::~Root();
}
DECLARE_INFO;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
DECLARE_VISIT_CHILDREN;
private:
Weak<Element> m_element;
};
template<typename Visitor>
void Root::visitChildrenImpl(JSCell* thisObject, Visitor& visitor)
{
DollarVMAssertScope assertScope;
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
visitor.addOpaqueRoot(thisObject);
}
DEFINE_VISIT_CHILDREN(Root);
class SimpleObject : public JSNonFinalObject {
public:
SimpleObject(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
typedef JSNonFinalObject Base;
template<typename CellType, SubspaceAccess>
static CompleteSubspace* LEGACY_NODELETE subspaceFor(VM& vm)
{
return &vm.cellSpace();
}
static SimpleObject* create(VM& vm, JSGlobalObject* globalObject)
{
DollarVMAssertScope assertScope;
Structure* structure = createStructure(vm, globalObject, jsNull());
SimpleObject* simpleObject = new (NotNull, allocateCell<SimpleObject>(vm)) SimpleObject(vm, structure);
simpleObject->finishCreation(vm);
return simpleObject;
}
DECLARE_VISIT_CHILDREN;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
JSValue LEGACY_NODELETE hiddenValue()
{
return m_hiddenValue.get();
}
void setHiddenValue(VM& vm, JSValue value)
{
ASSERT(value.isCell());
m_hiddenValue.set(vm, this, value);
}
static CallData LEGACY_NODELETE getConstructData(JSCell*)
{
CallData constructData;
constructData.type = CallData::Type::Native;
constructData.native.function = callHostFunctionAsConstructor;
constructData.native.isBoundFunction = false;
constructData.native.isWasm = false;
return constructData;
}
DECLARE_INFO;
private:
WriteBarrier<JSC::Unknown> m_hiddenValue;
};
template<typename Visitor>
void SimpleObject::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
DollarVMAssertScope assertScope;
SimpleObject* thisObject = uncheckedDowncast<SimpleObject>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
visitor.append(thisObject->m_hiddenValue);
}
DEFINE_VISIT_CHILDREN(SimpleObject);
class ImpureGetter : public JSNonFinalObject {
public:
ImpureGetter(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
DECLARE_INFO;
typedef JSNonFinalObject Base;
static constexpr unsigned StructureFlags = Base::StructureFlags | JSC::GetOwnPropertySlotIsImpure | JSC::OverridesGetOwnPropertySlot;
template<typename CellType, SubspaceAccess>
static CompleteSubspace* LEGACY_NODELETE subspaceFor(VM& vm)
{
return &vm.cellSpace();
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
static ImpureGetter* create(VM& vm, Structure* structure, JSObject* delegate)
{
DollarVMAssertScope assertScope;
ImpureGetter* getter = new (NotNull, allocateCell<ImpureGetter>(vm)) ImpureGetter(vm, structure);
getter->finishCreation(vm, delegate);
return getter;
}
void finishCreation(VM& vm, JSObject* delegate)
{
DollarVMAssertScope assertScope;
Base::finishCreation(vm);
if (delegate)
m_delegate.set(vm, this, delegate);
}
static bool getOwnPropertySlot(JSObject* object, JSGlobalObject* globalObject, PropertyName name, PropertySlot& slot)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
ImpureGetter* thisObject = uncheckedDowncast<ImpureGetter>(object);
if (thisObject->m_delegate) {
if (thisObject->m_delegate->getPropertySlot(globalObject, name, slot))
return true;
RETURN_IF_EXCEPTION(scope, false);
}
return Base::getOwnPropertySlot(object, globalObject, name, slot);
}
DECLARE_VISIT_CHILDREN;
void setDelegate(VM& vm, JSObject* delegate)
{
m_delegate.set(vm, this, delegate);
}
private:
WriteBarrier<JSObject> m_delegate;
};
template<typename Visitor>
void ImpureGetter::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
DollarVMAssertScope assertScope;
ASSERT_GC_OBJECT_INHERITS(cell, info());
Base::visitChildren(cell, visitor);
ImpureGetter* thisObject = uncheckedDowncast<ImpureGetter>(cell);
visitor.append(thisObject->m_delegate);
}
DEFINE_VISIT_CHILDREN(ImpureGetter);
static JSC_DECLARE_CUSTOM_GETTER(customGetterValueGetter);
static JSC_DECLARE_CUSTOM_GETTER(customGetterAcessorGetter);
class CustomGetter : public JSNonFinalObject {
public:
CustomGetter(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
DECLARE_INFO;
typedef JSNonFinalObject Base;
static constexpr unsigned StructureFlags = Base::StructureFlags | JSC::OverridesGetOwnPropertySlot;
template<typename CellType, SubspaceAccess>
static CompleteSubspace* LEGACY_NODELETE subspaceFor(VM& vm)
{
return &vm.cellSpace();
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
static CustomGetter* create(VM& vm, Structure* structure)
{
DollarVMAssertScope assertScope;
CustomGetter* getter = new (NotNull, allocateCell<CustomGetter>(vm)) CustomGetter(vm, structure);
getter->finishCreation(vm);
return getter;
}
static bool getOwnPropertySlot(JSObject* object, JSGlobalObject* globalObject, PropertyName propertyName, PropertySlot& slot)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
CustomGetter* thisObject = uncheckedDowncast<CustomGetter>(object);
if (propertyName == PropertyName(Identifier::fromString(vm, "customGetter"_s))) {
slot.setCacheableCustom(thisObject, PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum, customGetterValueGetter);
return true;
}
if (propertyName == PropertyName(Identifier::fromString(vm, "customGetterAccessor"_s))) {
slot.setCacheableCustom(thisObject, PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum | PropertyAttribute::CustomAccessor, customGetterAcessorGetter);
return true;
}
return JSObject::getOwnPropertySlot(thisObject, globalObject, propertyName, slot);
}
};
JSC_DEFINE_CUSTOM_GETTER(customGetterValueGetter, (JSGlobalObject* globalObject, EncodedJSValue thisValue, PropertyName))
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
CustomGetter* thisObject = dynamicDowncast<CustomGetter>(JSValue::decode(thisValue));
if (!thisObject)
return throwVMTypeError(globalObject, scope);
bool shouldThrow = thisObject->get(globalObject, PropertyName(Identifier::fromString(vm, "shouldThrow"_s))).toBoolean(globalObject);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
if (shouldThrow)
return throwVMTypeError(globalObject, scope);
return JSValue::encode(jsNumber(100));
}
JSC_DEFINE_CUSTOM_GETTER(customGetterAcessorGetter, (JSGlobalObject* globalObject, EncodedJSValue thisValue, PropertyName))
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* thisObject = dynamicDowncast<JSObject>(JSValue::decode(thisValue));
if (!thisObject)
return throwVMTypeError(globalObject, scope);
bool shouldThrow = thisObject->get(globalObject, PropertyName(Identifier::fromString(vm, "shouldThrow"_s))).toBoolean(globalObject);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
if (shouldThrow)
return throwVMTypeError(globalObject, scope);
return JSValue::encode(jsNumber(100));
}
static JSC_DECLARE_CUSTOM_GETTER(runtimeArrayLengthGetter);
class RuntimeArray : public JSArray {
public:
typedef JSArray Base;
static constexpr unsigned StructureFlags = Base::StructureFlags | OverridesGetOwnPropertySlot | InterceptsGetOwnPropertySlotByIndexEvenWhenLengthIsNotZero;
IGNORE_WARNINGS_BEGIN("unused-const-variable")
static constexpr DestructionMode needsDestruction = DoesNotNeedDestruction;
IGNORE_WARNINGS_END
template<typename CellType, SubspaceAccess>
static CompleteSubspace* LEGACY_NODELETE subspaceFor(VM& vm)
{
return &vm.cellSpace();
}
static RuntimeArray* create(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
Structure* structure = createStructure(vm, globalObject, createPrototype(vm, globalObject));
RuntimeArray* runtimeArray = new (NotNull, allocateCell<RuntimeArray>(vm)) RuntimeArray(globalObject, structure);
runtimeArray->finishCreation(globalObject, callFrame);
vm.heap.addFinalizer(runtimeArray, destroy);
return runtimeArray;
}
~RuntimeArray() { }
static void LEGACY_NODELETE destroy(JSCell* cell)
{
DollarVMAssertScope assertScope;
static_cast<RuntimeArray*>(cell)->RuntimeArray::~RuntimeArray();
}
static bool getOwnPropertySlot(JSObject* object, JSGlobalObject* globalObject, PropertyName propertyName, PropertySlot& slot)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
RuntimeArray* thisObject = uncheckedDowncast<RuntimeArray>(object);
if (propertyName == vm.propertyNames->length) {
slot.setCacheableCustom(thisObject, PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum, runtimeArrayLengthGetter);
return true;
}
std::optional<uint32_t> index = parseIndex(propertyName);
if (index && index.value() < thisObject->getLength()) {
slot.setValue(thisObject, PropertyAttribute::DontDelete | PropertyAttribute::DontEnum, jsNumber(thisObject->m_vector[index.value()]));
return true;
}
return JSObject::getOwnPropertySlot(thisObject, globalObject, propertyName, slot);
}
static bool getOwnPropertySlotByIndex(JSObject* object, JSGlobalObject* globalObject, unsigned index, PropertySlot& slot)
{
DollarVMAssertScope assertScope;
RuntimeArray* thisObject = uncheckedDowncast<RuntimeArray>(object);
if (index < thisObject->getLength()) {
slot.setValue(thisObject, PropertyAttribute::DontDelete | PropertyAttribute::DontEnum, jsNumber(thisObject->m_vector[index]));
return true;
}
return JSObject::getOwnPropertySlotByIndex(thisObject, globalObject, index, slot);
}
static NO_RETURN_DUE_TO_CRASH bool LEGACY_NODELETE put(JSCell*, JSGlobalObject*, PropertyName, JSValue, PutPropertySlot&)
{
RELEASE_ASSERT_NOT_REACHED();
}
static NO_RETURN_DUE_TO_CRASH bool LEGACY_NODELETE deleteProperty(JSCell*, JSGlobalObject*, PropertyName, DeletePropertySlot&)
{
RELEASE_ASSERT_NOT_REACHED();
}
unsigned LEGACY_NODELETE getLength() const { return m_vector.size(); }
DECLARE_INFO;
static ArrayPrototype* LEGACY_NODELETE createPrototype(VM&, JSGlobalObject* globalObject)
{
DollarVMAssertScope assertScope;
return globalObject->arrayPrototype();
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(DerivedArrayType, StructureFlags), info(), NonArray);
}
protected:
void finishCreation(JSGlobalObject* globalObject, CallFrame* callFrame)
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
Base::finishCreation(vm);
ASSERT(inherits(info()));
for (size_t i = 0; i < callFrame->argumentCount(); i++)
m_vector.append(callFrame->argument(i).toInt32(globalObject));
}
private:
RuntimeArray(JSGlobalObject* globalObject, Structure* structure)
: JSArray(globalObject->vm(), structure, nullptr)
{
DollarVMAssertScope assertScope;
}
Vector<int> m_vector;
};
JSC_DEFINE_CUSTOM_GETTER(runtimeArrayLengthGetter, (JSGlobalObject* globalObject, EncodedJSValue thisValue, PropertyName))
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
RuntimeArray* thisObject = dynamicDowncast<RuntimeArray>(JSValue::decode(thisValue));
if (!thisObject)
return throwVMTypeError(globalObject, scope);
return JSValue::encode(jsNumber(thisObject->getLength()));
}
static JSC_DECLARE_CUSTOM_GETTER(testStaticAccessorGetter);
static JSC_DECLARE_CUSTOM_SETTER(testStaticAccessorPutter);
JSC_DEFINE_CUSTOM_GETTER(testStaticAccessorGetter, (JSGlobalObject* globalObject, EncodedJSValue thisValue, PropertyName))
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* thisObject = dynamicDowncast<JSObject>(JSValue::decode(thisValue));
if (!thisObject)
return throwVMTypeError(globalObject, scope);
if (JSValue result = thisObject->getDirect(vm, PropertyName(Identifier::fromString(vm, "testField"_s))))
return JSValue::encode(result);
return JSValue::encode(jsUndefined());
}
JSC_DEFINE_CUSTOM_SETTER(testStaticAccessorPutter, (JSGlobalObject* globalObject, EncodedJSValue thisValue, EncodedJSValue value, PropertyName))
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue receiver = JSValue::decode(thisValue);
JSObject* thisObject = receiver.isObject() ? asObject(receiver) : receiver.synthesizePrototype(globalObject);
RETURN_IF_EXCEPTION(scope, false);
RELEASE_ASSERT(thisObject);
return thisObject->putDirect(vm, PropertyName(Identifier::fromString(vm, "testField"_s)), JSValue::decode(value));
}
static const struct CompactHashIndex staticCustomAccessorTableIndex[4] = {
{ 2, -1 },
{ 0, -1 },
{ 1, -1 },
{ -1, -1 },
};
static const struct JSC::HashTableValue staticCustomAccessorTableValues[3] = {
{ "testStaticAccessor"_s, static_cast<unsigned>(PropertyAttribute::CustomAccessor), NoIntrinsic, { JSC::HashTableValue::GetterSetterType, testStaticAccessorGetter, testStaticAccessorPutter } },
{ "testStaticAccessorDontEnum"_s, PropertyAttribute::CustomAccessor | PropertyAttribute::DontEnum, NoIntrinsic, { JSC::HashTableValue::GetterSetterType, testStaticAccessorGetter, testStaticAccessorPutter } },
{ "testStaticAccessorReadOnly"_s, PropertyAttribute::CustomAccessor | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly, NoIntrinsic, { JSC::HashTableValue::GetterSetterType, testStaticAccessorGetter, nullptr } },
};
static const struct JSC::HashTable staticCustomAccessorTable =
{ 3, 3, PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum | PropertyAttribute::CustomAccessor, nullptr, staticCustomAccessorTableValues, staticCustomAccessorTableIndex };
class StaticCustomAccessor : public JSNonFinalObject {
using Base = JSNonFinalObject;
public:
StaticCustomAccessor(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
DECLARE_INFO;
static constexpr unsigned StructureFlags = Base::StructureFlags | HasStaticPropertyTable | OverridesGetOwnPropertySlot;
template<typename CellType, SubspaceAccess>
static CompleteSubspace* LEGACY_NODELETE subspaceFor(VM& vm)
{
return &vm.cellSpace();
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
static StaticCustomAccessor* create(VM& vm, Structure* structure)
{
DollarVMAssertScope assertScope;
StaticCustomAccessor* accessor = new (NotNull, allocateCell<StaticCustomAccessor>(vm)) StaticCustomAccessor(vm, structure);
accessor->finishCreation(vm);
return accessor;
}
static bool getOwnPropertySlot(JSObject* thisObject, JSGlobalObject* globalObject, PropertyName propertyName, PropertySlot& slot)
{
if (String(propertyName.uid()) == "thinAirCustomGetter"_s) {
slot.setCacheableCustom(thisObject, PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum | PropertyAttribute::CustomAccessor, testStaticAccessorGetter);
return true;
}
return JSNonFinalObject::getOwnPropertySlot(thisObject, globalObject, propertyName, slot);
}
};
static JSC_DECLARE_CUSTOM_GETTER(testStaticValueGetter);
static JSC_DECLARE_CUSTOM_SETTER(testStaticValuePutter);
static JSC_DECLARE_CUSTOM_SETTER(testStaticValuePutterSetFlag);
JSC_DEFINE_CUSTOM_GETTER(testStaticValueGetter, (JSGlobalObject*, EncodedJSValue, PropertyName))
{
DollarVMAssertScope assertScope;
return JSValue::encode(jsUndefined());
}
JSC_DEFINE_CUSTOM_SETTER(testStaticValuePutter, (JSGlobalObject* globalObject, EncodedJSValue thisValue, EncodedJSValue value, PropertyName))
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* thisObject = dynamicDowncast<JSObject>(JSValue::decode(thisValue));
if (!thisObject)
return throwVMTypeError(globalObject, scope);
return thisObject->putDirect(vm, PropertyName(Identifier::fromString(vm, "testStaticValue"_s)), JSValue::decode(value));
}
JSC_DEFINE_CUSTOM_SETTER(testStaticValuePutterSetFlag, (JSGlobalObject* globalObject, EncodedJSValue thisValue, EncodedJSValue, PropertyName))
{
DollarVMAssertScope assertScope;
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* thisObject = dynamicDowncast<JSObject>(JSValue::decode(thisValue));
if (!thisObject)
return throwVMTypeError(globalObject, scope);
return thisObject->putDirect(vm, PropertyName(Identifier::fromString(vm, "testStaticValueSetterCalled"_s)), jsBoolean(true));
}
static const struct CompactHashIndex staticCustomValueTableIndex[5] = {
{ 1, 4 },
{ -1, -1 },
{ 0, -1 },
{ 2, -1 },
{ 3, -1 },
};
static const struct JSC::HashTableValue staticCustomValueTableValues[4] = {
{ "testStaticValue"_s, static_cast<unsigned>(PropertyAttribute::CustomValue), NoIntrinsic, { JSC::HashTableValue::GetterSetterType, testStaticValueGetter, testStaticValuePutter } },
{ "testStaticValueNoSetter"_s, PropertyAttribute::CustomValue | PropertyAttribute::DontEnum, NoIntrinsic, { JSC::HashTableValue::GetterSetterType, testStaticValueGetter, nullptr } },
{ "testStaticValueReadOnly"_s, PropertyAttribute::CustomValue | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly, NoIntrinsic, { JSC::HashTableValue::GetterSetterType, testStaticValueGetter, nullptr } },
{ "testStaticValueSetFlag"_s, static_cast<unsigned>(PropertyAttribute::CustomValue), NoIntrinsic, { JSC::HashTableValue::GetterSetterType, testStaticValueGetter, testStaticValuePutterSetFlag } },
};
static const struct JSC::HashTable staticCustomValueTable =
{ 4, 3, PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum | PropertyAttribute::CustomValue, nullptr, staticCustomValueTableValues, staticCustomValueTableIndex };
class StaticCustomValue : public JSNonFinalObject {
using Base = JSNonFinalObject;
public:
StaticCustomValue(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
DECLARE_INFO;
static constexpr unsigned StructureFlags = Base::StructureFlags | HasStaticPropertyTable;
template<typename CellType, SubspaceAccess>
static CompleteSubspace* LEGACY_NODELETE subspaceFor(VM& vm)
{
return &vm.cellSpace();
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
static StaticCustomValue* create(VM& vm, Structure* structure)
{
DollarVMAssertScope assertScope;
StaticCustomValue* accessor = new (NotNull, allocateCell<StaticCustomValue>(vm)) StaticCustomValue(vm, structure);
accessor->finishCreation(vm);
return accessor;
}
};
static JSC_DECLARE_HOST_FUNCTION(staticDontDeleteDontEnumMethod);
class StaticDontDeleteDontEnum : public JSNonFinalObject {
public:
using Base = JSNonFinalObject;
static constexpr unsigned StructureFlags = Base::StructureFlags | HasStaticPropertyTable;
StaticDontDeleteDontEnum(VM& vm, Structure* structure)
: Base(vm, structure)
{
DollarVMAssertScope assertScope;
}
DECLARE_INFO;
template<typename CellType, SubspaceAccess>
static CompleteSubspace* LEGACY_NODELETE subspaceFor(VM& vm)
{
return &vm.cellSpace();
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
DollarVMAssertScope assertScope;
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
static StaticDontDeleteDontEnum* create(VM& vm, Structure* structure)
{
DollarVMAssertScope assertScope;
StaticDontDeleteDontEnum* result = new (NotNull, allocateCell<StaticDontDeleteDontEnum>(vm)) StaticDontDeleteDontEnum(vm, structure);
result->finishCreation(vm);
return result;
}
};
JSC_DEFINE_HOST_FUNCTION(staticDontDeleteDontEnumMethod, (JSGlobalObject*, CallFrame*))
{
DollarVMAssertScope assertScope;
return encodedJSUndefined();
}
static const struct CompactHashIndex staticDontDeleteDontEnumTableIndex[5] = {
{ 0, 4 },
{ -1, -1 },
{ 2, -1 },
{ -1, -1 },
{ 1, -1 },
};
static const struct JSC::HashTableValue staticDontDeleteDontEnumTableValues[3] = {
{ "dontEnum"_s, static_cast<unsigned>(PropertyAttribute::Function | PropertyAttribute::DontEnum), NoIntrinsic, { JSC::HashTableValue::NativeFunctionType, staticDontDeleteDontEnumMethod, 0 } },
{ "dontDelete"_s, static_cast<unsigned>(PropertyAttribute::Function | PropertyAttribute::DontDelete), NoIntrinsic, { JSC::HashTableValue::NativeFunctionType, staticDontDeleteDontEnumMethod, 0 } },
{ "dontDeleteDontEnum"_s, static_cast<unsigned>(PropertyAttribute::Function | PropertyAttribute::DontDelete | PropertyAttribute::DontEnum), NoIntrinsic, { JSC::HashTableValue::NativeFunctionType, staticDontDeleteDontEnumMethod, 0 } },
};
static const struct JSC::HashTable staticDontDeleteDontEnumTable =
{ 3, 3, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete, nullptr, staticDontDeleteDontEnumTableValues, staticDontDeleteDontEnumTableIndex };
class ObjectDoingSideEffectPutWithoutCorrectSlotStatus : public JSNonFinalObject {
using Base = JSNonFinalObject;
static constexpr unsigned StructureFlags = Base::StructureFlags | OverridesPut | HasStaticPropertyTable;
public:
template<typename CellType, SubspaceAccess>
static CompleteSubspace* LEGACY_NODELETE subspaceFor(VM& vm)
{
return &vm.cellSpace();
}
ObjectDoingSideEffectPutWithoutCorrectSlotStatus(VM& vm, Structure* structure)
: Base(vm, structure)
{