JSValue iteratorNext(ExecState* exec, JSValue iterator, JSValue value)
{
JSValue nextFunction = iterator.get(exec, exec->vm().propertyNames->next);
if (exec->hadException())
return jsUndefined();
CallData nextFunctionCallData;
CallType nextFunctionCallType = getCallData(nextFunction, nextFunctionCallData);
if (nextFunctionCallType == CallTypeNone)
return throwTypeError(exec);
MarkedArgumentBuffer nextFunctionArguments;
if (!value.isEmpty())
nextFunctionArguments.append(value);
JSValue result = call(exec, nextFunction, nextFunctionCallType, nextFunctionCallData, iterator, nextFunctionArguments);
if (exec->hadException())
return jsUndefined();
if (!result.isObject())
return throwTypeError(exec, ASCIILiteral("Iterator result interface is not an object."));
return result;
}
bool JSStorage::putDelegate(ExecState* exec, PropertyName propertyName, JSValue value, PutPropertySlot&)
{
// Only perform the custom put if the object doesn't have a native property by this name.
// Since hasProperty() would end up calling canGetItemsForName() and be fooled, we need to check
// the native property slots manually.
PropertySlot slot(this);
if (getStaticValueSlot<JSStorage, Base>(exec, *s_info.staticPropHashTable, this, propertyName, slot))
return false;
JSValue prototype = this->prototype();
if (prototype.isObject() && asObject(prototype)->getPropertySlot(exec, propertyName, slot))
return false;
String stringValue = value.toString(exec)->value(exec);
if (exec->hadException())
return true;
ExceptionCode ec = 0;
impl().setItem(propertyNameToString(propertyName), stringValue, ec);
setDOMException(exec, ec);
return true;
}
void reportException(ExecState* exec, JSValue exception)
{
if (exception.isObject() && asObject(exception)->exceptionType() == Terminated)
return;
UString errorMessage = exception.toString(exec);
JSObject* exceptionObject = exception.toObject(exec);
int lineNumber = exceptionObject->get(exec, Identifier(exec, "line")).toInt32(exec);
UString exceptionSourceURL = exceptionObject->get(exec, Identifier(exec, "sourceURL")).toString(exec);
exec->clearException();
if (ExceptionBase* exceptionBase = toExceptionBase(exception))
errorMessage = stringToUString(exceptionBase->message() + ": " + exceptionBase->description());
ScriptExecutionContext* scriptExecutionContext = static_cast<JSDOMGlobalObject*>(exec->lexicalGlobalObject())->scriptExecutionContext();
ASSERT(scriptExecutionContext);
// Crash data indicates null-dereference crashes at this point in the Safari 4 Public Beta.
// It's harmless to return here without reporting the exception to the log and the debugger in this case.
if (!scriptExecutionContext)
return;
scriptExecutionContext->reportException(ustringToString(errorMessage), lineNumber, ustringToString(exceptionSourceURL), 0);
}
RuntimeType TypeSet::getRuntimeTypeForValue(JSValue v)
{
RuntimeType ret;
if (v.isFunction())
ret = TypeFunction;
else if (v.isUndefined())
ret = TypeUndefined;
else if (v.isNull())
ret = TypeNull;
else if (v.isBoolean())
ret = TypeBoolean;
else if (v.isMachineInt())
ret = TypeMachineInt;
else if (v.isNumber())
ret = TypeNumber;
else if (v.isString())
ret = TypeString;
else if (v.isObject())
ret = TypeObject;
else
ret = TypeNothing;
return ret;
}
JSValue JSIDBDatabase::createObjectStore(ExecState* exec)
{
if (exec->argumentCount() < 1)
return exec->vm().throwException(exec, createNotEnoughArgumentsError(exec));
String name = exec->argument(0).toString(exec)->value(exec);
if (exec->hadException())
return jsUndefined();
JSValue optionsValue = exec->argument(1);
if (!optionsValue.isUndefinedOrNull() && !optionsValue.isObject())
return throwTypeError(exec, "Not an object.");
IDBKeyPath keyPath;
bool autoIncrement = false;
if (!optionsValue.isUndefinedOrNull()) {
JSValue keyPathValue = optionsValue.get(exec, Identifier(exec, "keyPath"));
if (exec->hadException())
return jsUndefined();
if (!keyPathValue.isUndefinedOrNull()) {
keyPath = idbKeyPathFromValue(exec, keyPathValue);
if (exec->hadException())
return jsUndefined();
}
autoIncrement = optionsValue.get(exec, Identifier(exec, "autoIncrement")).toBoolean(exec);
if (exec->hadException())
return jsUndefined();
}
ExceptionCode ec = 0;
JSValue result = toJS(exec, globalObject(), impl()->createObjectStore(name, keyPath, autoIncrement, ec).get());
setDOMException(exec, ec);
return result;
}
static JSValue setNewValueFromDateArgs(ExecState* exec, JSValue thisValue, const ArgList& args, int numArgsToUse, bool inputIsUTC)
{
if (!thisValue.isObject(&DateInstance::info))
return throwError(exec, TypeError);
DateInstance* thisDateObj = asDateInstance(thisValue);
if (args.isEmpty()) {
JSValue result = jsNaN(exec);
thisDateObj->setInternalValue(result);
return result;
}
double milli = thisDateObj->internalNumber();
double ms = 0;
GregorianDateTime t;
if (numArgsToUse == 3 && isnan(milli))
// Based on ECMA 262 15.9.5.40 - .41 (set[UTC]FullYear)
// the time must be reset to +0 if it is NaN.
thisDateObj->msToGregorianDateTime(0, true, t);
else {
double secs = floor(milli / msPerSecond);
ms = milli - secs * msPerSecond;
thisDateObj->msToGregorianDateTime(milli, inputIsUTC, t);
}
if (!fillStructuresUsingDateArgs(exec, args, numArgsToUse, &ms, &t)) {
JSValue result = jsNaN(exec);
thisDateObj->setInternalValue(result);
return result;
}
JSValue result = jsNumber(exec, gregorianDateTimeToMS(t, ms, inputIsUTC));
thisDateObj->setInternalValue(result);
return result;
}
JSObject* JSQuarantinedObjectWrapper::construct(ExecState* exec, JSObject* constructor, const ArgList& args)
{
JSQuarantinedObjectWrapper* wrapper = static_cast<JSQuarantinedObjectWrapper*>(constructor);
ArgList preparedArgs;
for (size_t i = 0; i < args.size(); ++i)
preparedArgs.append(wrapper->prepareIncomingValue(exec, args.at(exec, i)));
// FIXME: Would be nice to find a way to reuse the result of m_unwrappedObject->getConstructData
// from when we called it in JSQuarantinedObjectWrapper::getConstructData.
ConstructData unwrappedConstructData;
ConstructType unwrappedConstructType = wrapper->m_unwrappedObject->getConstructData(unwrappedConstructData);
ASSERT(unwrappedConstructType != ConstructTypeNone);
JSValue* unwrappedResult = KJS::construct(wrapper->unwrappedExecState(), wrapper->m_unwrappedObject, unwrappedConstructType, unwrappedConstructData, preparedArgs);
JSValue* resultValue = wrapper->wrapOutgoingValue(wrapper->unwrappedExecState(), unwrappedResult);
ASSERT(resultValue->isObject());
JSObject* result = static_cast<JSObject*>(resultValue);
wrapper->transferExceptionToExecState(exec);
return result;
}
EncodedJSValue JSC_HOST_CALL objectConstructorSeal(ExecState* exec)
{
// 1. If Type(O) is not Object throw a TypeError exception.
JSValue obj = exec->argument(0);
if (!obj.isObject())
return throwVMError(exec, createTypeError(exec, ASCIILiteral("Object.seal can only be called on Objects.")));
JSObject* object = asObject(obj);
if (isJSFinalObject(object)) {
object->seal(exec->vm());
return JSValue::encode(obj);
}
// 2. For each named own property name P of O,
PropertyNameArray properties(exec);
object->methodTable()->getOwnPropertyNames(object, exec, properties, IncludeDontEnumProperties);
PropertyNameArray::const_iterator end = properties.end();
for (PropertyNameArray::const_iterator iter = properties.begin(); iter != end; ++iter) {
// a. Let desc be the result of calling the [[GetOwnProperty]] internal method of O with P.
PropertyDescriptor desc;
if (!object->methodTable()->getOwnPropertyDescriptor(object, exec, *iter, desc))
continue;
// b. If desc.[[Configurable]] is true, set desc.[[Configurable]] to false.
desc.setConfigurable(false);
// c. Call the [[DefineOwnProperty]] internal method of O with P, desc, and true as arguments.
object->methodTable()->defineOwnProperty(object, exec, *iter, desc, true);
if (exec->hadException())
return JSValue::encode(obj);
}
// 3. Set the [[Extensible]] internal property of O to false.
object->preventExtensions(exec->vm());
// 4. Return O.
return JSValue::encode(obj);
}
JSValue iteratorNext(ExecState* exec, JSValue iterator, JSValue value)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue nextFunction = iterator.get(exec, vm.propertyNames->next);
RETURN_IF_EXCEPTION(scope, JSValue());
CallData nextFunctionCallData;
CallType nextFunctionCallType = getCallData(nextFunction, nextFunctionCallData);
if (nextFunctionCallType == CallType::None)
return throwTypeError(exec, scope);
MarkedArgumentBuffer nextFunctionArguments;
if (!value.isEmpty())
nextFunctionArguments.append(value);
JSValue result = call(exec, nextFunction, nextFunctionCallType, nextFunctionCallData, iterator, nextFunctionArguments);
RETURN_IF_EXCEPTION(scope, JSValue());
if (!result.isObject())
return throwTypeError(exec, scope, ASCIILiteral("Iterator result interface is not an object."));
return result;
}
bool JSNamedNodeMap::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
{
ASSERT_GC_OBJECT_INHERITS(this, &s_info);
JSValue proto = prototype();
if (proto.isObject() && static_cast<JSObject*>(asObject(proto))->hasProperty(exec, propertyName))
return false;
const HashEntry* entry = JSNamedNodeMapTable.entry(exec, propertyName);
if (entry) {
slot.setCustom(this, entry->propertyGetter());
return true;
}
bool ok;
unsigned index = propertyName.toUInt32(ok);
if (ok && index < static_cast<NamedNodeMap*>(impl())->length()) {
slot.setCustomIndex(this, index, indexGetter);
return true;
}
if (canGetItemsForName(exec, static_cast<NamedNodeMap*>(impl()), propertyName)) {
slot.setCustom(this, nameGetter);
return true;
}
return getStaticValueSlot<JSNamedNodeMap, Base>(exec, &JSNamedNodeMapTable, this, propertyName, slot);
}
ScriptObject InjectedScriptHost::createInjectedScript(const String& source, ScriptState* scriptState, long id)
{
SourceCode sourceCode = makeSource(source);
JSLock lock(SilenceAssertionsOnly);
JSDOMGlobalObject* globalObject = static_cast<JSDOMGlobalObject*>(scriptState->lexicalGlobalObject());
JSValue globalThisValue = scriptState->globalThisValue();
Completion comp = JSC::evaluate(scriptState, globalObject->globalScopeChain(), sourceCode, globalThisValue);
if (comp.complType() != JSC::Normal && comp.complType() != JSC::ReturnValue)
return ScriptObject();
JSValue functionValue = comp.value();
CallData callData;
CallType callType = functionValue.getCallData(callData);
if (callType == CallTypeNone)
return ScriptObject();
MarkedArgumentBuffer args;
args.append(toJS(scriptState, globalObject, this));
args.append(globalThisValue);
args.append(jsNumber(scriptState, id));
JSValue result = JSC::call(scriptState, functionValue, callType, callData, globalThisValue, args);
if (result.isObject())
return ScriptObject(scriptState, result.getObject());
return ScriptObject();
}
static RefPtr<IDBKey> createIDBKeyFromValue(ExecState* exec, JSValue value, Vector<JSArray*>& stack)
{
if (value.isNumber() && !std::isnan(value.toNumber(exec)))
return IDBKey::createNumber(value.toNumber(exec));
if (value.isString())
return IDBKey::createString(value.toString(exec)->value(exec));
if (value.inherits(DateInstance::info()) && !std::isnan(valueToDate(exec, value)))
return IDBKey::createDate(valueToDate(exec, value));
if (value.isObject()) {
JSObject* object = asObject(value);
if (isJSArray(object) || object->inherits(JSArray::info())) {
JSArray* array = asArray(object);
size_t length = array->length();
if (stack.contains(array))
return nullptr;
if (stack.size() >= maximumDepth)
return nullptr;
stack.append(array);
Vector<RefPtr<IDBKey>> subkeys;
for (size_t i = 0; i < length; i++) {
JSValue item = array->getIndex(exec, i);
RefPtr<IDBKey> subkey = createIDBKeyFromValue(exec, item, stack);
if (!subkey)
subkeys.append(IDBKey::createInvalid());
else
subkeys.append(subkey);
}
stack.removeLast();
return IDBKey::createArray(subkeys);
}
}
return nullptr;
}
NPObject* HTMLPlugInElement::createNPObject()
{
// This shouldn't ever happen, but might as well check anyway
if (!document() || !document()->frame())
return _NPN_CreateNoScriptObject();
// Can't create NPObjects when JavaScript is disabled
Frame* frame = document()->frame();
if (!frame->settings()->isJavaScriptEnabled())
return _NPN_CreateNoScriptObject();
#ifdef __OWB_JS__
// Create a JSObject bound to this element
JSLock lock;
ExecState *exec = frame->scriptProxy()->interpreter()->globalExec();
JSValue* jsElementValue = toJS(exec, this);
if (!jsElementValue || !jsElementValue->isObject())
return _NPN_CreateNoScriptObject();
// Wrap the JSObject in an NPObject
RootObject* rootObject = frame->bindingRootObject();
return _NPN_CreateScriptObject(0, jsElementValue->getObject(), rootObject, rootObject);
#endif //__OWB_JS__
}
::JSType JSValueGetType(JSContextRef ctx, JSValueRef value)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return kJSTypeUndefined;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJS(exec, value);
if (jsValue.isUndefined())
return kJSTypeUndefined;
if (jsValue.isNull())
return kJSTypeNull;
if (jsValue.isBoolean())
return kJSTypeBoolean;
if (jsValue.isNumber())
return kJSTypeNumber;
if (jsValue.isString())
return kJSTypeString;
ASSERT(jsValue.isObject());
return kJSTypeObject;
}
EncodedJSValue JSC_HOST_CALL JSBlobConstructor::constructJSBlob(ExecState* exec)
{
JSBlobConstructor* jsConstructor = jsCast<JSBlobConstructor*>(exec->callee());
ScriptExecutionContext* context = jsConstructor->scriptExecutionContext();
if (!context)
return throwVMError(exec, createReferenceError(exec, "Blob constructor associated document is unavailable"));
if (!exec->argumentCount()) {
RefPtr<Blob> blob = Blob::create();
return JSValue::encode(CREATE_DOM_WRAPPER(exec, jsConstructor->globalObject(), Blob, blob.get()));
}
JSValue firstArg = exec->argument(0);
if (!isJSArray(firstArg))
return throwVMError(exec, createTypeError(exec, "First argument of the constructor is not of type Array"));
String type;
String endings = "transparent";
if (exec->argumentCount() > 1) {
JSValue blobPropertyBagValue = exec->argument(1);
if (!blobPropertyBagValue.isObject())
return throwVMError(exec, createTypeError(exec, "Second argument of the constructor is not of type Object"));
// Given the above test, this will always yield an object.
JSObject* blobPropertyBagObject = blobPropertyBagValue.toObject(exec);
// Create the dictionary wrapper from the initializer object.
JSDictionary dictionary(exec, blobPropertyBagObject);
// Attempt to get the endings property and validate it.
bool containsEndings = dictionary.get("endings", endings);
if (exec->hadException())
return JSValue::encode(jsUndefined());
if (containsEndings) {
if (endings != "transparent" && endings != "native")
return throwVMError(exec, createTypeError(exec, "The endings property must be either \"transparent\" or \"native\""));
}
// Attempt to get the type property.
dictionary.get("type", type);
if (exec->hadException())
return JSValue::encode(jsUndefined());
}
ASSERT(endings == "transparent" || endings == "native");
// FIXME: this would be better if the WebKitBlobBuilder were a stack object to avoid the allocation.
RefPtr<WebKitBlobBuilder> blobBuilder = WebKitBlobBuilder::create();
JSArray* array = asArray(firstArg);
unsigned length = array->length();
for (unsigned i = 0; i < length; ++i) {
JSValue item = array->getIndex(i);
#if ENABLE(BLOB)
if (item.inherits(&JSArrayBuffer::s_info))
blobBuilder->append(toArrayBuffer(item));
else
#endif
if (item.inherits(&JSBlob::s_info))
blobBuilder->append(toBlob(item));
else {
String string = ustringToString(item.toString(exec)->value(exec));
if (exec->hadException())
return JSValue::encode(jsUndefined());
blobBuilder->append(string, endings, ASSERT_NO_EXCEPTION);
}
}
RefPtr<Blob> blob = blobBuilder->getBlob(type);
return JSValue::encode(CREATE_DOM_WRAPPER(exec, jsConstructor->globalObject(), Blob, blob.get()));
}
static bool canSet(JSValue object, const String& keyPathElement)
{
UNUSED_PARAM(keyPathElement);
return object.isObject();
}
//--------------------------------------------------------------------------
// KJSValueToCFTypeInternal
//--------------------------------------------------------------------------
// Caller is responsible for releasing the returned CFTypeRef
CFTypeRef KJSValueToCFTypeInternal(JSValue inValue, ExecState *exec, ObjectImpList* inImps)
{
if (!inValue)
return 0;
CFTypeRef result = 0;
JSGlueAPIEntry entry;
if (inValue.isBoolean())
{
result = inValue.toBoolean(exec) ? kCFBooleanTrue : kCFBooleanFalse;
RetainCFType(result);
return result;
}
if (inValue.isString())
{
UString uString = inValue.toString(exec);
result = UStringToCFString(uString);
return result;
}
if (inValue.isNumber())
{
double number1 = inValue.toNumber(exec);
double number2 = (double)inValue.toInteger(exec);
if (number1 == number2)
{
int intValue = (int)number2;
result = CFNumberCreate(0, kCFNumberIntType, &intValue);
}
else
{
result = CFNumberCreate(0, kCFNumberDoubleType, &number1);
}
return result;
}
if (inValue.isObject())
{
if (inValue.inherits(&UserObjectImp::info)) {
UserObjectImp* userObjectImp = static_cast<UserObjectImp *>(asObject(inValue));
JSUserObject* ptr = userObjectImp->GetJSUserObject();
if (ptr)
{
result = ptr->CopyCFValue();
}
}
else
{
JSObject *object = inValue.toObject(exec);
UInt8 isArray = false;
// if two objects reference each
JSObject* imp = object;
ObjectImpList* temp = inImps;
while (temp) {
if (imp == temp->imp) {
return CFRetain(GetCFNull());
}
temp = temp->next;
}
ObjectImpList imps;
imps.next = inImps;
imps.imp = imp;
//[...] HACK since we do not have access to the class info we use class name instead
#if 0
if (object->inherits(&ArrayInstanceImp::info))
#else
if (object->className() == "Array")
#endif
{
isArray = true;
JSGlueGlobalObject* globalObject = static_cast<JSGlueGlobalObject*>(exec->dynamicGlobalObject());
if (globalObject && (globalObject->Flags() & kJSFlagConvertAssociativeArray)) {
PropertyNameArray propNames(exec);
object->getPropertyNames(exec, propNames);
PropertyNameArray::const_iterator iter = propNames.begin();
PropertyNameArray::const_iterator end = propNames.end();
while(iter != end && isArray)
{
Identifier propName = *iter;
UString ustr = propName.ustring();
const UniChar* uniChars = (const UniChar*)ustr.characters();
int size = ustr.length();
while (size--) {
if (uniChars[size] < '0' || uniChars[size] > '9') {
isArray = false;
break;
}
}
iter++;
}
}
}
if (isArray)
{
// This is an KJS array
unsigned int length = object->get(exec, Identifier(exec, "length")).toUInt32(exec);
result = CFArrayCreateMutable(0, 0, &kCFTypeArrayCallBacks);
if (result)
{
for (unsigned i = 0; i < length; i++)
{
CFTypeRef cfValue = KJSValueToCFTypeInternal(object->get(exec, i), exec, &imps);
CFArrayAppendValue((CFMutableArrayRef)result, cfValue);
ReleaseCFType(cfValue);
}
}
}
else
{
// Not an array, just treat it like a dictionary which contains (property name, property value) pairs
PropertyNameArray propNames(exec);
object->getPropertyNames(exec, propNames);
{
result = CFDictionaryCreateMutable(0,
0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
if (result)
{
PropertyNameArray::const_iterator iter = propNames.begin();
PropertyNameArray::const_iterator end = propNames.end();
while(iter != end)
{
Identifier propName = *iter;
if (object->hasProperty(exec, propName))
{
CFStringRef cfKey = IdentifierToCFString(propName);
CFTypeRef cfValue = KJSValueToCFTypeInternal(object->get(exec, propName), exec, &imps);
if (cfKey && cfValue)
{
CFDictionaryAddValue((CFMutableDictionaryRef)result, cfKey, cfValue);
}
ReleaseCFType(cfKey);
ReleaseCFType(cfValue);
}
iter++;
}
}
}
}
}
return result;
}
if (inValue.isUndefinedOrNull())
{
result = RetainCFType(GetCFNull());
return result;
}
ASSERT_NOT_REACHED();
return 0;
}
jvalue convertValueToJValue(ExecState* exec, RootObject* rootObject, JSValue value, JavaType javaType, const char* javaClassName)
{
JSLock lock(SilenceAssertionsOnly);
jvalue result;
memset(&result, 0, sizeof(jvalue));
switch (javaType) {
case JavaTypeArray:
case JavaTypeObject:
{
// FIXME: JavaJSObject::convertValueToJObject functionality is almost exactly the same,
// these functions should use common code.
if (value.isObject()) {
JSObject* object = asObject(value);
if (object->inherits(&JavaRuntimeObject::s_info)) {
// Unwrap a Java instance.
JavaRuntimeObject* runtimeObject = static_cast<JavaRuntimeObject*>(object);
JavaInstance* instance = runtimeObject->getInternalJavaInstance();
if (instance)
result.l = instance->javaInstance();
} else if (object->classInfo() == &RuntimeArray::s_info) {
// Input is a JavaScript Array that was originally created from a Java Array
RuntimeArray* imp = static_cast<RuntimeArray*>(object);
JavaArray* array = static_cast<JavaArray*>(imp->getConcreteArray());
result.l = array->javaArray();
} else if (object->classInfo() == &JSArray::s_info) {
// Input is a Javascript Array. We need to create it to a Java Array.
result.l = convertArrayInstanceToJavaArray(exec, asArray(value), javaClassName);
} else if ((!result.l && (!strcmp(javaClassName, "java.lang.Object")))
|| (!strcmp(javaClassName, "netscape.javascript.JSObject"))) {
// Wrap objects in JSObject instances.
JNIEnv* env = getJNIEnv();
jclass jsObjectClass = env->FindClass("sun/plugin/javascript/webkit/JSObject");
jmethodID constructorID = env->GetMethodID(jsObjectClass, "<init>", "(J)V");
if (constructorID) {
jlong nativeHandle = ptr_to_jlong(object);
rootObject->gcProtect(object);
result.l = env->NewObject(jsObjectClass, constructorID, nativeHandle);
}
}
}
// Create an appropriate Java object if target type is java.lang.Object.
if (!result.l && !strcmp(javaClassName, "java.lang.Object")) {
if (value.isString()) {
UString stringValue = asString(value)->value(exec);
JNIEnv* env = getJNIEnv();
jobject javaString = env->functions->NewString(env, (const jchar*)stringValue.characters(), stringValue.length());
result.l = javaString;
} else if (value.isNumber()) {
double doubleValue = value.asNumber();
JNIEnv* env = getJNIEnv();
jclass clazz = env->FindClass("java/lang/Double");
jmethodID constructor = env->GetMethodID(clazz, "<init>", "(D)V");
jobject javaDouble = env->functions->NewObject(env, clazz, constructor, doubleValue);
result.l = javaDouble;
} else if (value.isBoolean()) {
bool boolValue = value.asBoolean();
JNIEnv* env = getJNIEnv();
jclass clazz = env->FindClass("java/lang/Boolean");
jmethodID constructor = env->GetMethodID(clazz, "<init>", "(Z)V");
jobject javaBoolean = env->functions->NewObject(env, clazz, constructor, boolValue);
result.l = javaBoolean;
} else if (value.isUndefined()) {
UString stringValue = "undefined";
JNIEnv* env = getJNIEnv();
jobject javaString = env->functions->NewString(env, (const jchar*)stringValue.characters(), stringValue.length());
result.l = javaString;
}
}
// Convert value to a string if the target type is a java.lang.String, and we're not
// converting from a null.
if (!result.l && !strcmp(javaClassName, "java.lang.String")) {
if (!value.isNull()) {
UString stringValue = value.toString(exec);
JNIEnv* env = getJNIEnv();
jobject javaString = env->functions->NewString(env, (const jchar*)stringValue.characters(), stringValue.length());
result.l = javaString;
}
}
}
break;
case JavaTypeBoolean:
{
result.z = (jboolean)value.toNumber(exec);
}
break;
case JavaTypeByte:
{
result.b = (jbyte)value.toNumber(exec);
}
break;
case JavaTypeChar:
{
result.c = (jchar)value.toNumber(exec);
}
break;
case JavaTypeShort:
{
result.s = (jshort)value.toNumber(exec);
}
break;
case JavaTypeInt:
{
result.i = (jint)value.toNumber(exec);
}
break;
case JavaTypeLong:
{
result.j = (jlong)value.toNumber(exec);
}
break;
case JavaTypeFloat:
{
result.f = (jfloat)value.toNumber(exec);
}
break;
case JavaTypeDouble:
{
result.d = (jdouble)value.toNumber(exec);
}
break;
case JavaTypeInvalid:
case JavaTypeVoid:
break;
}
return result;
}
JSObject* ProgramExecutable::initializeGlobalProperties(VM& vm, CallFrame* callFrame, JSScope* scope)
{
auto throwScope = DECLARE_THROW_SCOPE(vm);
RELEASE_ASSERT(scope);
JSGlobalObject* globalObject = scope->globalObject();
RELEASE_ASSERT(globalObject);
ASSERT(&globalObject->vm() == &vm);
ParserError error;
JSParserStrictMode strictMode = isStrictMode() ? JSParserStrictMode::Strict : JSParserStrictMode::NotStrict;
DebuggerMode debuggerMode = globalObject->hasInteractiveDebugger() ? DebuggerOn : DebuggerOff;
UnlinkedProgramCodeBlock* unlinkedCodeBlock = vm.codeCache()->getUnlinkedProgramCodeBlock(
vm, this, source(), strictMode, debuggerMode, error);
if (globalObject->hasDebugger())
globalObject->debugger()->sourceParsed(callFrame, source().provider(), error.line(), error.message());
if (error.isValid())
return error.toErrorObject(globalObject, source());
JSValue nextPrototype = globalObject->getPrototypeDirect();
while (nextPrototype && nextPrototype.isObject()) {
if (UNLIKELY(asObject(nextPrototype)->type() == ProxyObjectType)) {
ExecState* exec = globalObject->globalExec();
return createTypeError(exec, ASCIILiteral("Proxy is not allowed in the global prototype chain."));
}
nextPrototype = asObject(nextPrototype)->getPrototypeDirect();
}
JSGlobalLexicalEnvironment* globalLexicalEnvironment = globalObject->globalLexicalEnvironment();
const VariableEnvironment& variableDeclarations = unlinkedCodeBlock->variableDeclarations();
const VariableEnvironment& lexicalDeclarations = unlinkedCodeBlock->lexicalDeclarations();
// The ES6 spec says that no vars/global properties/let/const can be duplicated in the global scope.
// This carried out section 15.1.8 of the ES6 spec: http://www.ecma-international.org/ecma-262/6.0/index.html#sec-globaldeclarationinstantiation
{
ExecState* exec = globalObject->globalExec();
// Check for intersection of "var" and "let"/"const"/"class"
for (auto& entry : lexicalDeclarations) {
if (variableDeclarations.contains(entry.key))
return createSyntaxError(exec, makeString("Can't create duplicate variable: '", String(entry.key.get()), "'"));
}
// Check if any new "let"/"const"/"class" will shadow any pre-existing global property names, or "var"/"let"/"const" variables.
// It's an error to introduce a shadow.
for (auto& entry : lexicalDeclarations) {
bool hasProperty = globalObject->hasProperty(exec, entry.key.get());
RETURN_IF_EXCEPTION(throwScope, throwScope.exception());
if (hasProperty) {
// The ES6 spec says that just RestrictedGlobalProperty can't be shadowed
// This carried out section 8.1.1.4.14 of the ES6 spec: http://www.ecma-international.org/ecma-262/6.0/index.html#sec-hasrestrictedglobalproperty
PropertyDescriptor descriptor;
globalObject->getOwnPropertyDescriptor(exec, entry.key.get(), descriptor);
if (descriptor.value() != jsUndefined() && !descriptor.configurable())
return createSyntaxError(exec, makeString("Can't create duplicate variable that shadows a global property: '", String(entry.key.get()), "'"));
}
hasProperty = globalLexicalEnvironment->hasProperty(exec, entry.key.get());
RETURN_IF_EXCEPTION(throwScope, throwScope.exception());
if (hasProperty) {
if (UNLIKELY(entry.value.isConst() && !vm.globalConstRedeclarationShouldThrow() && !isStrictMode())) {
// We only allow "const" duplicate declarations under this setting.
// For example, we don't "let" variables to be overridden by "const" variables.
if (globalLexicalEnvironment->isConstVariable(entry.key.get()))
continue;
}
return createSyntaxError(exec, makeString("Can't create duplicate variable: '", String(entry.key.get()), "'"));
}
}
// Check if any new "var"s will shadow any previous "let"/"const"/"class" names.
// It's an error to introduce a shadow.
if (!globalLexicalEnvironment->isEmpty()) {
for (auto& entry : variableDeclarations) {
bool hasProperty = globalLexicalEnvironment->hasProperty(exec, entry.key.get());
RETURN_IF_EXCEPTION(throwScope, throwScope.exception());
if (hasProperty)
return createSyntaxError(exec, makeString("Can't create duplicate variable: '", String(entry.key.get()), "'"));
}
}
}
m_unlinkedProgramCodeBlock.set(vm, this, unlinkedCodeBlock);
BatchedTransitionOptimizer optimizer(vm, globalObject);
for (size_t i = 0, numberOfFunctions = unlinkedCodeBlock->numberOfFunctionDecls(); i < numberOfFunctions; ++i) {
UnlinkedFunctionExecutable* unlinkedFunctionExecutable = unlinkedCodeBlock->functionDecl(i);
ASSERT(!unlinkedFunctionExecutable->name().isEmpty());
globalObject->addFunction(callFrame, unlinkedFunctionExecutable->name());
if (vm.typeProfiler() || vm.controlFlowProfiler()) {
vm.functionHasExecutedCache()->insertUnexecutedRange(sourceID(),
unlinkedFunctionExecutable->typeProfilingStartOffset(),
unlinkedFunctionExecutable->typeProfilingEndOffset());
}
}
for (auto& entry : variableDeclarations) {
ASSERT(entry.value.isVar());
globalObject->addVar(callFrame, Identifier::fromUid(&vm, entry.key.get()));
ASSERT(!throwScope.exception());
}
{
JSGlobalLexicalEnvironment* globalLexicalEnvironment = jsCast<JSGlobalLexicalEnvironment*>(globalObject->globalScope());
SymbolTable* symbolTable = globalLexicalEnvironment->symbolTable();
ConcurrentJSLocker locker(symbolTable->m_lock);
for (auto& entry : lexicalDeclarations) {
if (UNLIKELY(entry.value.isConst() && !vm.globalConstRedeclarationShouldThrow() && !isStrictMode())) {
if (symbolTable->contains(locker, entry.key.get()))
continue;
}
ScopeOffset offset = symbolTable->takeNextScopeOffset(locker);
SymbolTableEntry newEntry(VarOffset(offset), entry.value.isConst() ? ReadOnly : 0);
newEntry.prepareToWatch();
symbolTable->add(locker, entry.key.get(), newEntry);
ScopeOffset offsetForAssert = globalLexicalEnvironment->addVariables(1, jsTDZValue());
RELEASE_ASSERT(offsetForAssert == offset);
}
}
return nullptr;
}
JSValue JSCanvasRenderingContext2D::drawImage(ExecState* exec, const ArgList& args)
{
CanvasRenderingContext2D* context = impl();
// DrawImage has three variants:
// drawImage(img, dx, dy)
// drawImage(img, dx, dy, dw, dh)
// drawImage(img, sx, sy, sw, sh, dx, dy, dw, dh)
// Composite operation is specified with globalCompositeOperation.
// The img parameter can be a <img> or <canvas> element.
JSValue value = args.at(0);
if (!value.isObject())
return throwError(exec, TypeError);
JSObject* o = asObject(value);
ExceptionCode ec = 0;
if (o->inherits(&JSHTMLImageElement::s_info)) {
HTMLImageElement* imgElt = static_cast<HTMLImageElement*>(static_cast<JSHTMLElement*>(o)->impl());
switch (args.size()) {
case 3:
context->drawImage(imgElt, args.at(1).toFloat(exec), args.at(2).toFloat(exec));
break;
case 5:
context->drawImage(imgElt, args.at(1).toFloat(exec), args.at(2).toFloat(exec),
args.at(3).toFloat(exec), args.at(4).toFloat(exec), ec);
setDOMException(exec, ec);
break;
case 9:
context->drawImage(imgElt, FloatRect(args.at(1).toFloat(exec), args.at(2).toFloat(exec),
args.at(3).toFloat(exec), args.at(4).toFloat(exec)),
FloatRect(args.at(5).toFloat(exec), args.at(6).toFloat(exec),
args.at(7).toFloat(exec), args.at(8).toFloat(exec)), ec);
setDOMException(exec, ec);
break;
default:
return throwError(exec, SyntaxError);
}
} else if (o->inherits(&JSHTMLCanvasElement::s_info)) {
HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(static_cast<JSHTMLElement*>(o)->impl());
switch (args.size()) {
case 3:
context->drawImage(canvas, args.at(1).toFloat(exec), args.at(2).toFloat(exec));
break;
case 5:
context->drawImage(canvas, args.at(1).toFloat(exec), args.at(2).toFloat(exec),
args.at(3).toFloat(exec), args.at(4).toFloat(exec), ec);
setDOMException(exec, ec);
break;
case 9:
context->drawImage(canvas, FloatRect(args.at(1).toFloat(exec), args.at(2).toFloat(exec),
args.at(3).toFloat(exec), args.at(4).toFloat(exec)),
FloatRect(args.at(5).toFloat(exec), args.at(6).toFloat(exec),
args.at(7).toFloat(exec), args.at(8).toFloat(exec)), ec);
setDOMException(exec, ec);
break;
default:
return throwError(exec, SyntaxError);
}
#if ENABLE(VIDEO)
} else if (o->inherits(&JSHTMLVideoElement::s_info)) {
HTMLVideoElement* video = static_cast<HTMLVideoElement*>(static_cast<JSHTMLElement*>(o)->impl());
switch (args.size()) {
case 3:
context->drawImage(video, args.at(1).toFloat(exec), args.at(2).toFloat(exec));
break;
case 5:
context->drawImage(video, args.at(1).toFloat(exec), args.at(2).toFloat(exec),
args.at(3).toFloat(exec), args.at(4).toFloat(exec), ec);
setDOMException(exec, ec);
break;
case 9:
context->drawImage(video, FloatRect(args.at(1).toFloat(exec), args.at(2).toFloat(exec),
args.at(3).toFloat(exec), args.at(4).toFloat(exec)),
FloatRect(args.at(5).toFloat(exec), args.at(6).toFloat(exec),
args.at(7).toFloat(exec), args.at(8).toFloat(exec)), ec);
setDOMException(exec, ec);
break;
default:
return throwError(exec, SyntaxError);
}
#endif
} else {
setDOMException(exec, TYPE_MISMATCH_ERR);
}
return jsUndefined();
}
// ES5 8.10.5 ToPropertyDescriptor
static bool toPropertyDescriptor(ExecState* exec, JSValue in, PropertyDescriptor& desc)
{
if (!in.isObject()) {
throwError(exec, createTypeError(exec, ASCIILiteral("Property description must be an object.")));
return false;
}
JSObject* description = asObject(in);
PropertySlot enumerableSlot(description);
if (description->getPropertySlot(exec, exec->propertyNames().enumerable, enumerableSlot)) {
desc.setEnumerable(enumerableSlot.getValue(exec, exec->propertyNames().enumerable).toBoolean(exec));
if (exec->hadException())
return false;
}
PropertySlot configurableSlot(description);
if (description->getPropertySlot(exec, exec->propertyNames().configurable, configurableSlot)) {
desc.setConfigurable(configurableSlot.getValue(exec, exec->propertyNames().configurable).toBoolean(exec));
if (exec->hadException())
return false;
}
JSValue value;
PropertySlot valueSlot(description);
if (description->getPropertySlot(exec, exec->propertyNames().value, valueSlot)) {
desc.setValue(valueSlot.getValue(exec, exec->propertyNames().value));
if (exec->hadException())
return false;
}
PropertySlot writableSlot(description);
if (description->getPropertySlot(exec, exec->propertyNames().writable, writableSlot)) {
desc.setWritable(writableSlot.getValue(exec, exec->propertyNames().writable).toBoolean(exec));
if (exec->hadException())
return false;
}
PropertySlot getSlot(description);
if (description->getPropertySlot(exec, exec->propertyNames().get, getSlot)) {
JSValue get = getSlot.getValue(exec, exec->propertyNames().get);
if (exec->hadException())
return false;
if (!get.isUndefined()) {
CallData callData;
if (getCallData(get, callData) == CallTypeNone) {
throwError(exec, createTypeError(exec, ASCIILiteral("Getter must be a function.")));
return false;
}
}
desc.setGetter(get);
}
PropertySlot setSlot(description);
if (description->getPropertySlot(exec, exec->propertyNames().set, setSlot)) {
JSValue set = setSlot.getValue(exec, exec->propertyNames().set);
if (exec->hadException())
return false;
if (!set.isUndefined()) {
CallData callData;
if (getCallData(set, callData) == CallTypeNone) {
throwError(exec, createTypeError(exec, ASCIILiteral("Setter must be a function.")));
return false;
}
}
desc.setSetter(set);
}
if (!desc.isAccessorDescriptor())
return true;
if (desc.value()) {
throwError(exec, createTypeError(exec, ASCIILiteral("Invalid property. 'value' present on property with getter or setter.")));
return false;
}
if (desc.writablePresent()) {
throwError(exec, createTypeError(exec, ASCIILiteral("Invalid property. 'writable' present on property with getter or setter.")));
return false;
}
return true;
}
static EncodedJSValue JSC_HOST_CALL constructJSWebAssemblyInstance(ExecState* exec)
{
auto& vm = exec->vm();
auto throwScope = DECLARE_THROW_SCOPE(vm);
auto* globalObject = exec->lexicalGlobalObject();
// If moduleObject is not a WebAssembly.Module instance, a TypeError is thrown.
JSWebAssemblyModule* jsModule = jsDynamicCast<JSWebAssemblyModule*>(vm, exec->argument(0));
if (!jsModule)
return JSValue::encode(throwException(exec, throwScope, createTypeError(exec, ASCIILiteral("first argument to WebAssembly.Instance must be a WebAssembly.Module"), defaultSourceAppender, runtimeTypeForValue(exec->argument(0)))));
const Wasm::ModuleInformation& moduleInformation = jsModule->moduleInformation();
// If the importObject parameter is not undefined and Type(importObject) is not Object, a TypeError is thrown.
JSValue importArgument = exec->argument(1);
JSObject* importObject = importArgument.getObject();
if (!importArgument.isUndefined() && !importObject)
return JSValue::encode(throwException(exec, throwScope, createTypeError(exec, ASCIILiteral("second argument to WebAssembly.Instance must be undefined or an Object"), defaultSourceAppender, runtimeTypeForValue(importArgument))));
// If the list of module.imports is not empty and Type(importObject) is not Object, a TypeError is thrown.
if (moduleInformation.imports.size() && !importObject)
return JSValue::encode(throwException(exec, throwScope, createTypeError(exec, ASCIILiteral("second argument to WebAssembly.Instance must be Object because the WebAssembly.Module has imports"), defaultSourceAppender, runtimeTypeForValue(importArgument))));
Identifier moduleKey = Identifier::fromUid(PrivateName(PrivateName::Description, "WebAssemblyInstance"));
WebAssemblyModuleRecord* moduleRecord = WebAssemblyModuleRecord::create(exec, vm, globalObject->webAssemblyModuleRecordStructure(), moduleKey, moduleInformation);
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
Structure* instanceStructure = InternalFunction::createSubclassStructure(exec, exec->newTarget(), globalObject->WebAssemblyInstanceStructure());
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
JSWebAssemblyInstance* instance = JSWebAssemblyInstance::create(vm, instanceStructure, jsModule, moduleRecord->getModuleNamespace(exec));
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
{
// Always start with a dummy Memory, so that wasm -> wasm thunks avoid checking for a nullptr Memory when trying to set pinned registers.
Wasm::Memory memory;
instance->setMemory(vm, JSWebAssemblyMemory::create(vm, exec->lexicalGlobalObject()->WebAssemblyMemoryStructure(), WTFMove(memory)));
}
// Let funcs, memories and tables be initially-empty lists of callable JavaScript objects, WebAssembly.Memory objects and WebAssembly.Table objects, respectively.
// Let imports be an initially-empty list of external values.
unsigned numImportFunctions = 0;
unsigned numImportGlobals = 0;
bool hasMemoryImport = false;
bool hasTableImport = false;
// For each import i in module.imports:
for (auto& import : moduleInformation.imports) {
// 1. Let o be the resultant value of performing Get(importObject, i.module_name).
JSValue importModuleValue = importObject->get(exec, import.module);
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
// 2. If Type(o) is not Object, throw a TypeError.
if (!importModuleValue.isObject())
return JSValue::encode(throwException(exec, throwScope, createTypeError(exec, ASCIILiteral("import must be an object"), defaultSourceAppender, runtimeTypeForValue(importModuleValue))));
// 3. Let v be the value of performing Get(o, i.item_name)
JSObject* object = jsCast<JSObject*>(importModuleValue);
JSValue value = object->get(exec, import.field);
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
switch (import.kind) {
case Wasm::ExternalKind::Function: {
// 4. If i is a function import:
// i. If IsCallable(v) is false, throw a WebAssembly.LinkError.
if (!value.isFunction())
return JSValue::encode(throwException(exec, throwScope, createJSWebAssemblyLinkError(exec, vm, ASCIILiteral("import function must be callable"))));
JSCell* cell = value.asCell();
// ii. If v is an Exported Function Exotic Object:
if (WebAssemblyFunction* importedExport = jsDynamicCast<WebAssemblyFunction*>(vm, cell)) {
// a. If the signature of v does not match the signature of i, throw a WebAssembly.LinkError.
Wasm::SignatureIndex importedSignatureIndex = importedExport->signatureIndex();
Wasm::SignatureIndex expectedSignatureIndex = moduleInformation.importFunctionSignatureIndices[import.kindIndex];
if (importedSignatureIndex != expectedSignatureIndex)
return JSValue::encode(throwException(exec, throwScope, createJSWebAssemblyLinkError(exec, vm, ASCIILiteral("imported function's signature doesn't match the provided WebAssembly function's signature"))));
// b. Let closure be v.[[Closure]].
}
// iii. Otherwise:
// a. Let closure be a new host function of the given signature which calls v by coercing WebAssembly arguments to JavaScript arguments via ToJSValue and returns the result, if any, by coercing via ToWebAssemblyValue.
// Note: done as part of Plan compilation.
// iv. Append v to funcs.
// Note: adding the JSCell to the instance list fulfills closure requirements b. above (the WebAssembly.Instance wil be kept alive) and v. below (the JSFunction).
instance->setImportFunction(vm, cell, numImportFunctions++);
// v. Append closure to imports.
break;
}
case Wasm::ExternalKind::Table: {
RELEASE_ASSERT(!hasTableImport); // This should be guaranteed by a validation failure.
// 7. Otherwise (i is a table import):
hasTableImport = true;
JSWebAssemblyTable* table = jsDynamicCast<JSWebAssemblyTable*>(vm, value);
// i. If v is not a WebAssembly.Table object, throw a WebAssembly.LinkError.
if (!table)
return JSValue::encode(throwException(exec, throwScope, createJSWebAssemblyLinkError(exec, vm, ASCIILiteral("Table import is not an instance of WebAssembly.Table"))));
uint32_t expectedInitial = moduleInformation.tableInformation.initial();
uint32_t actualInitial = table->size();
if (actualInitial < expectedInitial)
return JSValue::encode(throwException(exec, throwScope, createJSWebAssemblyLinkError(exec, vm, ASCIILiteral("Table import provided an 'initial' that is too small"))));
if (std::optional<uint32_t> expectedMaximum = moduleInformation.tableInformation.maximum()) {
std::optional<uint32_t> actualMaximum = table->maximum();
if (!actualMaximum) {
return JSValue::encode(
throwException(exec, throwScope, createJSWebAssemblyLinkError(exec, vm, ASCIILiteral("Table import does not have a 'maximum' but the module requires that it does"))));
}
if (*actualMaximum > *expectedMaximum) {
return JSValue::encode(
throwException(exec, throwScope, createJSWebAssemblyLinkError(exec, vm, ASCIILiteral("Imported Table's 'maximum' is larger than the module's expected 'maximum'"))));
}
}
// ii. Append v to tables.
// iii. Append v.[[Table]] to imports.
instance->setTable(vm, table);
break;
}
case Wasm::ExternalKind::Memory: {
// 6. If i is a memory import:
RELEASE_ASSERT(!hasMemoryImport); // This should be guaranteed by a validation failure.
RELEASE_ASSERT(moduleInformation.memory);
hasMemoryImport = true;
JSWebAssemblyMemory* memory = jsDynamicCast<JSWebAssemblyMemory*>(vm, value);
// i. If v is not a WebAssembly.Memory object, throw a WebAssembly.LinkError.
if (!memory)
return JSValue::encode(throwException(exec, throwScope, createJSWebAssemblyLinkError(exec, vm, ASCIILiteral("Memory import is not an instance of WebAssembly.Memory"))));
Wasm::PageCount expectedInitial = moduleInformation.memory.initial();
Wasm::PageCount actualInitial = memory->memory()->initial();
if (actualInitial < expectedInitial)
return JSValue::encode(throwException(exec, throwScope, createJSWebAssemblyLinkError(exec, vm, ASCIILiteral("Memory import provided an 'initial' that is too small"))));
if (Wasm::PageCount expectedMaximum = moduleInformation.memory.maximum()) {
Wasm::PageCount actualMaximum = memory->memory()->maximum();
if (!actualMaximum) {
return JSValue::encode(
throwException(exec, throwScope, createJSWebAssemblyLinkError(exec, vm, ASCIILiteral("Memory import did not have a 'maximum' but the module requires that it does"))));
}
if (actualMaximum > expectedMaximum) {
return JSValue::encode(
throwException(exec, throwScope, createJSWebAssemblyLinkError(exec, vm, ASCIILiteral("Memory imports 'maximum' is larger than the module's expected 'maximum'"))));
}
}
// ii. Append v to memories.
// iii. Append v.[[Memory]] to imports.
instance->setMemory(vm, memory);
break;
}
case Wasm::ExternalKind::Global: {
// 5. If i is a global import:
// i. If i is not an immutable global, throw a TypeError.
ASSERT(moduleInformation.globals[import.kindIndex].mutability == Wasm::Global::Immutable);
// ii. If Type(v) is not Number, throw a TypeError.
if (!value.isNumber())
return JSValue::encode(throwException(exec, throwScope, createJSWebAssemblyLinkError(exec, vm, ASCIILiteral("imported global must be a number"))));
// iii. Append ToWebAssemblyValue(v) to imports.
switch (moduleInformation.globals[import.kindIndex].type) {
case Wasm::I32:
instance->setGlobal(numImportGlobals++, value.toInt32(exec));
break;
case Wasm::F32:
instance->setGlobal(numImportGlobals++, bitwise_cast<uint32_t>(value.toFloat(exec)));
break;
case Wasm::F64:
instance->setGlobal(numImportGlobals++, bitwise_cast<uint64_t>(value.asNumber()));
break;
default:
RELEASE_ASSERT_NOT_REACHED();
}
ASSERT(!throwScope.exception());
break;
}
}
}
{
if (!!moduleInformation.memory && moduleInformation.memory.isImport()) {
// We should either have a Memory import or we should have thrown an exception.
RELEASE_ASSERT(hasMemoryImport);
}
if (moduleInformation.memory && !hasMemoryImport) {
RELEASE_ASSERT(!moduleInformation.memory.isImport());
// We create a memory when it's a memory definition.
bool failed;
Wasm::Memory memory(moduleInformation.memory.initial(), moduleInformation.memory.maximum(), failed);
if (failed)
return JSValue::encode(throwException(exec, throwScope, createOutOfMemoryError(exec)));
instance->setMemory(vm,
JSWebAssemblyMemory::create(vm, exec->lexicalGlobalObject()->WebAssemblyMemoryStructure(), WTFMove(memory)));
}
}
{
if (!!moduleInformation.tableInformation && moduleInformation.tableInformation.isImport()) {
// We should either have a Table import or we should have thrown an exception.
RELEASE_ASSERT(hasTableImport);
}
if (!!moduleInformation.tableInformation && !hasTableImport) {
RELEASE_ASSERT(!moduleInformation.tableInformation.isImport());
// We create a Table when it's a Table definition.
JSWebAssemblyTable* table = JSWebAssemblyTable::create(exec, vm, exec->lexicalGlobalObject()->WebAssemblyTableStructure(),
moduleInformation.tableInformation.initial(), moduleInformation.tableInformation.maximum());
// We should always be able to allocate a JSWebAssemblyTable we've defined.
// If it's defined to be too large, we should have thrown a validation error.
ASSERT(!throwScope.exception());
ASSERT(table);
instance->setTable(vm, table);
}
}
// Globals
{
ASSERT(numImportGlobals == moduleInformation.firstInternalGlobal);
for (size_t globalIndex = numImportGlobals; globalIndex < moduleInformation.globals.size(); ++globalIndex) {
const auto& global = moduleInformation.globals[globalIndex];
ASSERT(global.initializationType != Wasm::Global::IsImport);
if (global.initializationType == Wasm::Global::FromGlobalImport) {
ASSERT(global.initialBitsOrImportNumber < numImportGlobals);
instance->setGlobal(globalIndex, instance->loadI64Global(global.initialBitsOrImportNumber));
} else
instance->setGlobal(globalIndex, global.initialBitsOrImportNumber);
}
}
moduleRecord->link(exec, instance);
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
if (verbose)
moduleRecord->dump();
JSValue startResult = moduleRecord->evaluate(exec);
UNUSED_PARAM(startResult);
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
return JSValue::encode(instance);
}
static bool canSet(JSValue object, const String& keyPathElement)
{
return object.isObject();
}
JSValue JSC_HOST_CALL stringProtoFuncReplace(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args)
{
JSString* sourceVal = thisValue.toThisJSString(exec);
const UString& source = sourceVal->value();
JSValue pattern = args.at(0);
JSValue replacement = args.at(1);
UString replacementString;
CallData callData;
CallType callType = replacement.getCallData(callData);
if (callType == CallTypeNone)
replacementString = replacement.toString(exec);
if (pattern.isObject(&RegExpObject::info)) {
RegExp* reg = asRegExpObject(pattern)->regExp();
bool global = reg->global();
RegExpConstructor* regExpConstructor = exec->lexicalGlobalObject()->regExpConstructor();
int lastIndex = 0;
int startPosition = 0;
Vector<UString::Range, 16> sourceRanges;
Vector<UString, 16> replacements;
// This is either a loop (if global is set) or a one-way (if not).
if (global && callType == CallTypeJS) {
// reg->numSubpatterns() + 1 for pattern args, + 2 for match start and sourceValue
int argCount = reg->numSubpatterns() + 1 + 2;
JSFunction* func = asFunction(replacement);
CachedCall cachedCall(exec, func, argCount, exec->exceptionSlot());
if (exec->hadException())
return jsNull();
while (true) {
int matchIndex;
int matchLen;
int* ovector;
regExpConstructor->performMatch(reg, source, startPosition, matchIndex, matchLen, &ovector);
if (matchIndex < 0)
break;
sourceRanges.append(UString::Range(lastIndex, matchIndex - lastIndex));
int completeMatchStart = ovector[0];
unsigned i = 0;
for (; i < reg->numSubpatterns() + 1; ++i) {
int matchStart = ovector[i * 2];
int matchLen = ovector[i * 2 + 1] - matchStart;
if (matchStart < 0)
cachedCall.setArgument(i, jsUndefined());
else
cachedCall.setArgument(i, jsSubstring(exec, source, matchStart, matchLen));
}
cachedCall.setArgument(i++, jsNumber(exec, completeMatchStart));
cachedCall.setArgument(i++, sourceVal);
cachedCall.setThis(exec->globalThisValue());
replacements.append(cachedCall.call().toString(cachedCall.newCallFrame()));
if (exec->hadException())
break;
lastIndex = matchIndex + matchLen;
startPosition = lastIndex;
// special case of empty match
if (matchLen == 0) {
startPosition++;
if (startPosition > source.size())
break;
}
}
} else {
do {
int matchIndex;
int matchLen;
int* ovector;
regExpConstructor->performMatch(reg, source, startPosition, matchIndex, matchLen, &ovector);
if (matchIndex < 0)
break;
sourceRanges.append(UString::Range(lastIndex, matchIndex - lastIndex));
if (callType != CallTypeNone) {
int completeMatchStart = ovector[0];
MarkedArgumentBuffer args;
for (unsigned i = 0; i < reg->numSubpatterns() + 1; ++i) {
int matchStart = ovector[i * 2];
int matchLen = ovector[i * 2 + 1] - matchStart;
if (matchStart < 0)
args.append(jsUndefined());
else
args.append(jsSubstring(exec, source, matchStart, matchLen));
}
args.append(jsNumber(exec, completeMatchStart));
args.append(sourceVal);
replacements.append(call(exec, replacement, callType, callData, exec->globalThisValue(), args).toString(exec));
if (exec->hadException())
break;
} else
replacements.append(substituteBackreferences(replacementString, source, ovector, reg));
lastIndex = matchIndex + matchLen;
startPosition = lastIndex;
// special case of empty match
if (matchLen == 0) {
startPosition++;
if (startPosition > source.size())
break;
}
} while (global);
}
if (!lastIndex && replacements.isEmpty())
return sourceVal;
if (lastIndex < source.size())
sourceRanges.append(UString::Range(lastIndex, source.size() - lastIndex));
return jsString(exec, source.spliceSubstringsWithSeparators(sourceRanges.data(), sourceRanges.size(),
replacements.data(), replacements.size()));
}
// Not a regular expression, so treat the pattern as a string.
UString patternString = pattern.toString(exec);
int matchPos = source.find(patternString);
if (matchPos == -1)
return sourceVal;
int matchLen = patternString.size();
if (callType != CallTypeNone) {
MarkedArgumentBuffer args;
args.append(jsSubstring(exec, source, matchPos, matchLen));
args.append(jsNumber(exec, matchPos));
args.append(sourceVal);
replacementString = call(exec, replacement, callType, callData, exec->globalThisValue(), args).toString(exec);
}
int ovector[2] = { matchPos, matchPos + matchLen };
return jsString(exec, source.replaceRange(matchPos, matchLen, substituteBackreferences(replacementString, source, ovector, 0)));
}
EncodedJSValue JSC_HOST_CALL constructJSHTMLElement(ExecState& exec)
{
VM& vm = exec.vm();
auto scope = DECLARE_THROW_SCOPE(vm);
auto* jsConstructor = jsCast<JSDOMConstructorBase*>(exec.jsCallee());
ASSERT(jsConstructor);
auto* context = jsConstructor->scriptExecutionContext();
if (!context)
return throwConstructorScriptExecutionContextUnavailableError(exec, scope, "HTMLElement");
ASSERT(context->isDocument());
JSValue newTargetValue = exec.thisValue();
auto* newTarget = newTargetValue.getObject();
auto* globalObject = jsCast<JSDOMGlobalObject*>(newTarget->globalObject(vm));
JSValue htmlElementConstructorValue = JSHTMLElement::getConstructor(vm, globalObject);
if (newTargetValue == htmlElementConstructorValue)
return throwVMTypeError(&exec, scope, "new.target is not a valid custom element constructor"_s);
auto& document = downcast<Document>(*context);
auto* window = document.domWindow();
if (!window)
return throwVMTypeError(&exec, scope, "new.target is not a valid custom element constructor"_s);
auto* registry = window->customElementRegistry();
if (!registry)
return throwVMTypeError(&exec, scope, "new.target is not a valid custom element constructor"_s);
auto* elementInterface = registry->findInterface(newTarget);
if (!elementInterface)
return throwVMTypeError(&exec, scope, "new.target does not define a custom element"_s);
if (!elementInterface->isUpgradingElement()) {
Structure* baseStructure = getDOMStructure<JSHTMLElement>(vm, *globalObject);
auto* newElementStructure = InternalFunction::createSubclassStructure(&exec, newTargetValue, baseStructure);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
Ref<HTMLElement> element = HTMLElement::create(elementInterface->name(), document);
element->setIsDefinedCustomElement(*elementInterface);
auto* jsElement = JSHTMLElement::create(newElementStructure, globalObject, element.get());
cacheWrapper(globalObject->world(), element.ptr(), jsElement);
return JSValue::encode(jsElement);
}
Element* elementToUpgrade = elementInterface->lastElementInConstructionStack();
if (!elementToUpgrade) {
throwInvalidStateError(exec, scope, "Cannot instantiate a custom element inside its own constructor during upgrades"_s);
return JSValue::encode(jsUndefined());
}
JSValue elementWrapperValue = toJS(&exec, jsConstructor->globalObject(), *elementToUpgrade);
ASSERT(elementWrapperValue.isObject());
JSValue newPrototype = newTarget->get(&exec, vm.propertyNames->prototype);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
JSObject* elementWrapperObject = asObject(elementWrapperValue);
JSObject::setPrototype(elementWrapperObject, &exec, newPrototype, true /* shouldThrowIfCantSet */);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
elementInterface->didUpgradeLastElementInConstructionStack();
return JSValue::encode(elementWrapperValue);
}
// ECMA 8.6.2.2
void JSObject::put(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot)
{
ASSERT(value);
ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(this));
if (propertyName == exec->propertyNames().underscoreProto) {
// Setting __proto__ to a non-object, non-null value is silently ignored to match Mozilla.
if (!value.isObject() && !value.isNull())
return;
JSValue nextPrototypeValue = value;
while (nextPrototypeValue && nextPrototypeValue.isObject()) {
JSObject* nextPrototype = asObject(nextPrototypeValue)->unwrappedObject();
if (nextPrototype == this) {
throwError(exec, GeneralError, "cyclic __proto__ value");
return;
}
nextPrototypeValue = nextPrototype->prototype();
}
setPrototype(value);
return;
}
// Check if there are any setters or getters in the prototype chain
JSValue prototype;
for (JSObject* obj = this; !obj->structure()->hasGetterSetterProperties(); obj = asObject(prototype)) {
prototype = obj->prototype();
if (prototype.isNull()) {
putDirectInternal(exec->globalData(), propertyName, value, 0, true, slot);
return;
}
}
unsigned attributes;
JSCell* specificValue;
if ((m_structure->get(propertyName, attributes, specificValue) != WTF::notFound) && attributes & ReadOnly)
return;
for (JSObject* obj = this; ; obj = asObject(prototype)) {
if (JSValue gs = obj->getDirect(propertyName)) {
if (gs.isGetterSetter()) {
JSObject* setterFunc = asGetterSetter(gs)->setter();
if (!setterFunc) {
throwSetterError(exec);
return;
}
CallData callData;
CallType callType = setterFunc->getCallData(callData);
MarkedArgumentBuffer args;
args.append(value);
call(exec, setterFunc, callType, callData, this, args);
return;
}
// If there's an existing property on the object or one of its
// prototypes it should be replaced, so break here.
break;
}
prototype = obj->prototype();
if (prototype.isNull())
break;
}
putDirectInternal(exec->globalData(), propertyName, value, 0, true, slot);
return;
}
JSValue* JSCanvasRenderingContext2D::drawImage(ExecState* exec, const ArgList& args)
{
CanvasRenderingContext2D* context = impl();
// DrawImage has three variants:
// drawImage(img, dx, dy)
// drawImage(img, dx, dy, dw, dh)
// drawImage(img, sx, sy, sw, sh, dx, dy, dw, dh)
// Composite operation is specified with globalCompositeOperation.
// The img parameter can be a <img> or <canvas> element.
JSValue* value = args[0];
if (!value->isObject())
return throwError(exec, TypeError);
JSObject* o = static_cast<JSObject*>(value);
ExceptionCode ec = 0;
if (o->inherits(&JSHTMLImageElement::s_info)) {
HTMLImageElement* imgElt = static_cast<HTMLImageElement*>(static_cast<JSHTMLElement*>(args[0])->impl());
switch (args.size()) {
case 3:
context->drawImage(imgElt, args[1]->toFloat(exec), args[2]->toFloat(exec));
break;
case 5:
context->drawImage(imgElt, args[1]->toFloat(exec), args[2]->toFloat(exec),
args[3]->toFloat(exec), args[4]->toFloat(exec), ec);
setDOMException(exec, ec);
break;
case 9:
context->drawImage(imgElt, FloatRect(args[1]->toFloat(exec), args[2]->toFloat(exec),
args[3]->toFloat(exec), args[4]->toFloat(exec)),
FloatRect(args[5]->toFloat(exec), args[6]->toFloat(exec),
args[7]->toFloat(exec), args[8]->toFloat(exec)), ec);
setDOMException(exec, ec);
break;
default:
return throwError(exec, SyntaxError);
}
} else if (o->inherits(&JSHTMLCanvasElement::s_info)) {
HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(static_cast<JSHTMLElement*>(args[0])->impl());
switch (args.size()) {
case 3:
context->drawImage(canvas, args[1]->toFloat(exec), args[2]->toFloat(exec));
break;
case 5:
context->drawImage(canvas, args[1]->toFloat(exec), args[2]->toFloat(exec),
args[3]->toFloat(exec), args[4]->toFloat(exec), ec);
setDOMException(exec, ec);
break;
case 9:
context->drawImage(canvas, FloatRect(args[1]->toFloat(exec), args[2]->toFloat(exec),
args[3]->toFloat(exec), args[4]->toFloat(exec)),
FloatRect(args[5]->toFloat(exec), args[6]->toFloat(exec),
args[7]->toFloat(exec), args[8]->toFloat(exec)), ec);
setDOMException(exec, ec);
break;
default:
return throwError(exec, SyntaxError);
}
} else {
setDOMException(exec, TYPE_MISMATCH_ERR);
return 0;
}
return jsUndefined();
}
std::unique_ptr<CryptoKeyData> JSCryptoKeySerializationJWK::keyDataRSAComponents() const
{
Vector<uint8_t> modulus;
Vector<uint8_t> exponent;
Vector<uint8_t> privateExponent;
if (!getBigIntegerVectorFromJSON(m_exec, m_json.get(), "n", modulus)) {
if (!m_exec->hadException())
throwTypeError(m_exec, "Required JWK \"n\" member is missing");
return nullptr;
}
if (!keySizeIsValid(modulus.size() * 8)) {
throwTypeError(m_exec, "Key size is not valid for " + m_jwkAlgorithmName);
return nullptr;
}
if (!getBigIntegerVectorFromJSON(m_exec, m_json.get(), "e", exponent)) {
if (!m_exec->hadException())
throwTypeError(m_exec, "Required JWK \"e\" member is missing");
return nullptr;
}
if (!getBigIntegerVectorFromJSON(m_exec, m_json.get(), "d", modulus)) {
if (m_exec->hadException())
return nullptr;
return CryptoKeyDataRSAComponents::createPublic(modulus, exponent);
}
CryptoKeyDataRSAComponents::PrimeInfo firstPrimeInfo;
CryptoKeyDataRSAComponents::PrimeInfo secondPrimeInfo;
Vector<CryptoKeyDataRSAComponents::PrimeInfo> otherPrimeInfos;
if (!getBigIntegerVectorFromJSON(m_exec, m_json.get(), "p", firstPrimeInfo.primeFactor)) {
if (m_exec->hadException())
return nullptr;
return CryptoKeyDataRSAComponents::createPrivate(modulus, exponent, privateExponent);
}
if (!getBigIntegerVectorFromJSON(m_exec, m_json.get(), "dp", firstPrimeInfo.factorCRTExponent)) {
if (m_exec->hadException())
return nullptr;
return CryptoKeyDataRSAComponents::createPrivate(modulus, exponent, privateExponent);
}
if (!getBigIntegerVectorFromJSON(m_exec, m_json.get(), "q", secondPrimeInfo.primeFactor)) {
if (m_exec->hadException())
return nullptr;
return CryptoKeyDataRSAComponents::createPrivate(modulus, exponent, privateExponent);
}
if (!getBigIntegerVectorFromJSON(m_exec, m_json.get(), "dq", secondPrimeInfo.factorCRTExponent)) {
if (m_exec->hadException())
return nullptr;
return CryptoKeyDataRSAComponents::createPrivate(modulus, exponent, privateExponent);
}
if (!getBigIntegerVectorFromJSON(m_exec, m_json.get(), "qi", secondPrimeInfo.factorCRTCoefficient)) {
if (m_exec->hadException())
return nullptr;
return CryptoKeyDataRSAComponents::createPrivate(modulus, exponent, privateExponent);
}
JSArray* otherPrimeInfoJSArray;
if (!getJSArrayFromJSON(m_exec, m_json.get(), "oth", otherPrimeInfoJSArray)) {
if (m_exec->hadException())
return nullptr;
return CryptoKeyDataRSAComponents::createPrivateWithAdditionalData(modulus, exponent, privateExponent, firstPrimeInfo, secondPrimeInfo, otherPrimeInfos);
}
for (size_t i = 0; i < otherPrimeInfoJSArray->length(); ++i) {
CryptoKeyDataRSAComponents::PrimeInfo info;
JSValue element = otherPrimeInfoJSArray->getIndex(m_exec, i);
if (m_exec->hadException())
return nullptr;
if (!element.isObject()) {
throwTypeError(m_exec, "JWK \"oth\" array member is not an object");
return nullptr;
}
if (!getBigIntegerVectorFromJSON(m_exec, asObject(element), "r", info.primeFactor)) {
if (!m_exec->hadException())
throwTypeError(m_exec, "Cannot get prime factor for a prime in \"oth\" dictionary");
return nullptr;
}
if (!getBigIntegerVectorFromJSON(m_exec, asObject(element), "d", info.factorCRTExponent)) {
if (!m_exec->hadException())
throwTypeError(m_exec, "Cannot get factor CRT exponent for a prime in \"oth\" dictionary");
return nullptr;
}
if (!getBigIntegerVectorFromJSON(m_exec, asObject(element), "t", info.factorCRTCoefficient)) {
if (!m_exec->hadException())
throwTypeError(m_exec, "Cannot get factor CRT coefficient for a prime in \"oth\" dictionary");
return nullptr;
}
otherPrimeInfos.append(info);
}
return CryptoKeyDataRSAComponents::createPrivateWithAdditionalData(modulus, exponent, privateExponent, firstPrimeInfo, secondPrimeInfo, otherPrimeInfos);
}
JSNodeFilterCondition::JSNodeFilterCondition(JSGlobalData&, NodeFilter* owner, JSValue filter)
: m_filter(filter.isObject() ? PassWeak<JSObject>(jsCast<JSObject*>(filter), &m_weakOwner, owner) : 0)
{
}
JSValue *ObjectProtoFunc::callAsFunction(ExecState *exec, JSObject *thisObj, const List &args)
{
switch (id) {
case ValueOf:
return thisObj;
case HasOwnProperty: {
PropertySlot slot;
return jsBoolean(thisObj->getOwnPropertySlot(exec, Identifier(args[0]->toString(exec)), slot));
}
case IsPrototypeOf: {
if (!args[0]->isObject())
return jsBoolean(false);
JSValue *v = static_cast<JSObject *>(args[0])->prototype();
while (true) {
if (!v->isObject())
return jsBoolean(false);
if (thisObj == static_cast<JSObject *>(v))
return jsBoolean(true);
v = static_cast<JSObject *>(v)->prototype();
}
}
case DefineGetter:
case DefineSetter: {
if (!args[1]->isObject() ||
!static_cast<JSObject *>(args[1])->implementsCall()) {
if (id == DefineGetter)
return throwError(exec, SyntaxError, "invalid getter usage");
else
return throwError(exec, SyntaxError, "invalid setter usage");
}
if (id == DefineGetter)
thisObj->defineGetter(exec, Identifier(args[0]->toString(exec)), static_cast<JSObject *>(args[1]));
else
thisObj->defineSetter(exec, Identifier(args[0]->toString(exec)), static_cast<JSObject *>(args[1]));
return jsUndefined();
}
case LookupGetter:
case LookupSetter: {
Identifier propertyName = Identifier(args[0]->toString(exec));
JSObject *obj = thisObj;
while (true) {
JSValue *v = obj->getDirect(propertyName);
if (v) {
if (v->type() != GetterSetterType)
return jsUndefined();
JSObject *funcObj;
if (id == LookupGetter)
funcObj = static_cast<GetterSetterImp *>(v)->getGetter();
else
funcObj = static_cast<GetterSetterImp *>(v)->getSetter();
if (!funcObj)
return jsUndefined();
else
return funcObj;
}
if (!obj->prototype() || !obj->prototype()->isObject())
return jsUndefined();
obj = static_cast<JSObject *>(obj->prototype());
}
}
case PropertyIsEnumerable:
return jsBoolean(thisObj->propertyIsEnumerable(exec, Identifier(args[0]->toString(exec))));
case ToLocaleString:
return jsString(thisObj->toString(exec));
case ToString:
default:
return jsString("[object " + thisObj->className() + "]");
}
}
