// ECMA-262 5.1, 15.11.4.4
EncodedJSValue JSC_HOST_CALL errorProtoFuncToString(ExecState* exec)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
// 1. Let O be the this value.
JSValue thisValue = exec->thisValue();
// 2. If Type(O) is not Object, throw a TypeError exception.
if (!thisValue.isObject())
return throwVMTypeError(exec, scope);
JSObject* thisObj = asObject(thisValue);
// Guard against recursion!
StringRecursionChecker checker(exec, thisObj);
ASSERT(!scope.exception() || checker.earlyReturnValue());
if (JSValue earlyReturnValue = checker.earlyReturnValue())
return JSValue::encode(earlyReturnValue);
// 3. Let name be the result of calling the [[Get]] internal method of O with argument "name".
JSValue name = thisObj->get(exec, exec->propertyNames().name);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
// 4. If name is undefined, then let name be "Error"; else let name be ToString(name).
String nameString;
if (name.isUndefined())
nameString = ASCIILiteral("Error");
else {
nameString = name.toWTFString(exec);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
}
// 5. Let msg be the result of calling the [[Get]] internal method of O with argument "message".
JSValue message = thisObj->get(exec, exec->propertyNames().message);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
// (sic)
// 6. If msg is undefined, then let msg be the empty String; else let msg be ToString(msg).
// 7. If msg is undefined, then let msg be the empty String; else let msg be ToString(msg).
String messageString;
if (message.isUndefined())
messageString = String();
else {
messageString = message.toWTFString(exec);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
}
// 8. If name is the empty String, return msg.
if (!nameString.length())
return JSValue::encode(message.isString() ? message : jsString(exec, messageString));
// 9. If msg is the empty String, return name.
if (!messageString.length())
return JSValue::encode(name.isString() ? name : jsString(exec, nameString));
// 10. Return the result of concatenating name, ":", a single space character, and msg.
scope.release();
return JSValue::encode(jsMakeNontrivialString(exec, nameString, ": ", messageString));
}
static std::error_code getDomainList(ExecState& exec, const JSObject* arrayObject, Vector<String>& vector)
{
VM& vm = exec.vm();
auto scope = DECLARE_THROW_SCOPE(vm);
ASSERT(vector.isEmpty());
if (!arrayObject || !isJSArray(arrayObject))
return ContentExtensionError::JSONInvalidDomainList;
const JSArray* array = jsCast<const JSArray*>(arrayObject);
unsigned length = array->length();
for (unsigned i = 0; i < length; ++i) {
const JSValue value = array->getIndex(&exec, i);
if (scope.exception() || !value.isString())
return ContentExtensionError::JSONInvalidDomainList;
// Domains should be punycode encoded lower case.
const String& domain = jsCast<JSString*>(value)->value(&exec);
if (domain.isEmpty())
return ContentExtensionError::JSONInvalidDomainList;
if (!containsOnlyASCIIWithNoUppercase(domain))
return ContentExtensionError::JSONDomainNotLowerCaseASCII;
vector.append(domain);
}
return { };
}
RuntimeType runtimeTypeForValue(JSValue value)
{
if (UNLIKELY(!value))
return TypeNothing;
if (value.isUndefined())
return TypeUndefined;
if (value.isNull())
return TypeNull;
if (value.isAnyInt())
return TypeAnyInt;
if (value.isNumber())
return TypeNumber;
if (value.isString())
return TypeString;
if (value.isBoolean())
return TypeBoolean;
if (value.isObject())
return TypeObject;
if (value.isFunction())
return TypeFunction;
if (value.isSymbol())
return TypeSymbol;
return TypeNothing;
}
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.isPrimitive())
ret = TypePrimitive;
else if (v.isObject())
ret = TypeObject;
else
CRASH();
return ret;
}
EncodedJSValue JIT_OPERATION operationGetByValCell(ExecState* exec, JSCell* base, EncodedJSValue encodedProperty)
{
VM& vm = exec->vm();
NativeCallFrameTracer tracer(&vm, exec);
JSValue property = JSValue::decode(encodedProperty);
if (property.isUInt32())
return getByVal(exec, base, property.asUInt32());
if (property.isDouble()) {
double propertyAsDouble = property.asDouble();
uint32_t propertyAsUInt32 = static_cast<uint32_t>(propertyAsDouble);
if (propertyAsUInt32 == propertyAsDouble)
return getByVal(exec, base, propertyAsUInt32);
} else if (property.isString()) {
Structure& structure = *base->structure(vm);
if (JSCell::canUseFastGetOwnProperty(structure)) {
if (AtomicStringImpl* existingAtomicString = asString(property)->toExistingAtomicString(exec)) {
if (JSValue result = base->fastGetOwnProperty(vm, structure, existingAtomicString))
return JSValue::encode(result);
}
}
}
PropertyName propertyName = property.toPropertyKey(exec);
return JSValue::encode(JSValue(base).get(exec, propertyName));
}
EncodedJSValue DFG_OPERATION operationGetByVal(ExecState* exec, EncodedJSValue encodedBase, EncodedJSValue encodedProperty)
{
JSGlobalData* globalData = &exec->globalData();
NativeCallFrameTracer tracer(globalData, exec);
JSValue baseValue = JSValue::decode(encodedBase);
JSValue property = JSValue::decode(encodedProperty);
if (LIKELY(baseValue.isCell())) {
JSCell* base = baseValue.asCell();
if (property.isUInt32()) {
return getByVal(exec, base, property.asUInt32());
} else if (property.isDouble()) {
double propertyAsDouble = property.asDouble();
uint32_t propertyAsUInt32 = static_cast<uint32_t>(propertyAsDouble);
if (propertyAsUInt32 == propertyAsDouble)
return getByVal(exec, base, propertyAsUInt32);
} else if (property.isString()) {
if (JSValue result = base->fastGetOwnProperty(exec, asString(property)->value(exec)))
return JSValue::encode(result);
}
}
Identifier ident(exec, property.toString(exec)->value(exec));
return JSValue::encode(baseValue.get(exec, ident));
}
EncodedJSValue JSC_HOST_CALL objectProtoFuncToString(ExecState* exec)
{
VM& vm = exec->vm();
JSValue thisValue = exec->thisValue().toThis(exec, StrictMode);
if (thisValue.isUndefinedOrNull())
return JSValue::encode(thisValue.isUndefined() ? vm.smallStrings.undefinedObjectString() : vm.smallStrings.nullObjectString());
JSObject* thisObject = thisValue.toObject(exec);
JSValue stringTag = thisObject->get(exec, exec->propertyNames().toStringTagSymbol);
if (stringTag.isString()) {
JSRopeString::RopeBuilder<RecordOverflow> ropeBuilder(vm);
ropeBuilder.append(vm.smallStrings.objectStringStart());
ropeBuilder.append(jsCast<JSString*>(stringTag));
ropeBuilder.append(vm.smallStrings.singleCharacterString(']'));
if(ropeBuilder.hasOverflowed())
return JSValue::encode(throwOutOfMemoryError(exec));
return JSValue::encode(ropeBuilder.release());
}
JSString* result = thisObject->structure(vm)->objectToStringValue();
if (!result) {
RefPtr<StringImpl> newString = WTF::tryMakeString("[object ", thisObject->methodTable(exec->vm())->className(thisObject), "]");
if (!newString)
return JSValue::encode(throwOutOfMemoryError(exec));
result = jsNontrivialString(&vm, newString.release());
thisObject->structure(vm)->setObjectToStringValue(vm, result);
}
return JSValue::encode(result);
}
// ECMA 15.9.3
JSObject* constructDate(ExecState* exec, JSGlobalObject* globalObject, JSValue newTarget, const ArgList& args)
{
VM& vm = exec->vm();
int numArgs = args.size();
double value;
if (numArgs == 0) // new Date() ECMA 15.9.3.3
value = NORMAL_OR_DETERMINISTIC_FUNCTION(jsCurrentTime(), deterministicCurrentTime(globalObject));
else if (numArgs == 1) {
if (args.at(0).inherits(DateInstance::info()))
value = asDateInstance(args.at(0))->internalNumber();
else {
JSValue primitive = args.at(0).toPrimitive(exec);
if (primitive.isString())
value = parseDate(vm, primitive.getString(exec));
else
value = primitive.toNumber(exec);
}
} else
value = millisecondsFromComponents(exec, args, WTF::LocalTime);
Structure* dateStructure = InternalFunction::createSubclassStructure(exec, newTarget, globalObject->dateStructure());
return DateInstance::create(vm, dateStructure, value);
}
static bool extractSourceInformationFromException(JSC::ExecState* exec, JSObject* exceptionObject, int* lineNumber, int* columnNumber, String* sourceURL)
{
VM& vm = exec->vm();
auto scope = DECLARE_CATCH_SCOPE(vm);
// FIXME: <http://webkit.org/b/115087> Web Inspector: Should not need to evaluate JavaScript handling exceptions
JSValue lineValue = exceptionObject->getDirect(vm, Identifier::fromString(exec, "line"));
JSValue columnValue = exceptionObject->getDirect(vm, Identifier::fromString(exec, "column"));
JSValue sourceURLValue = exceptionObject->getDirect(vm, Identifier::fromString(exec, "sourceURL"));
bool result = false;
if (lineValue && lineValue.isNumber()
&& sourceURLValue && sourceURLValue.isString()) {
*lineNumber = int(lineValue.toNumber(exec));
*columnNumber = columnValue && columnValue.isNumber() ? int(columnValue.toNumber(exec)) : 0;
*sourceURL = sourceURLValue.toWTFString(exec);
result = true;
} else if (ErrorInstance* error = jsDynamicCast<ErrorInstance*>(vm, exceptionObject)) {
unsigned unsignedLine;
unsigned unsignedColumn;
result = getLineColumnAndSource(error->stackTrace(), unsignedLine, unsignedColumn, *sourceURL);
*lineNumber = static_cast<int>(unsignedLine);
*columnNumber = static_cast<int>(unsignedColumn);
}
if (sourceURL->isEmpty())
*sourceURL = "undefined"_s;
scope.clearException();
return result;
}
JSValue JSInjectedScriptHost::type(ExecState* exec)
{
if (exec->argumentCount() < 1)
return jsUndefined();
JSValue value = exec->argument(0);
if (value.isString())
return jsString(exec, String("string"));
if (value.inherits(&JSArray::s_info))
return jsString(exec, String("array"));
if (value.isBoolean())
return jsString(exec, String("boolean"));
if (value.isNumber())
return jsString(exec, String("number"));
if (value.inherits(&DateInstance::s_info))
return jsString(exec, String("date"));
if (value.inherits(&RegExpObject::s_info))
return jsString(exec, String("regexp"));
if (value.inherits(&JSNode::s_info))
return jsString(exec, String("node"));
if (value.inherits(&JSNodeList::s_info))
return jsString(exec, String("array"));
if (value.inherits(&JSHTMLCollection::s_info))
return jsString(exec, String("array"));
if (value.inherits(&JSInt8Array::s_info) || value.inherits(&JSInt16Array::s_info) || value.inherits(&JSInt32Array::s_info))
return jsString(exec, String("array"));
if (value.inherits(&JSUint8Array::s_info) || value.inherits(&JSUint16Array::s_info) || value.inherits(&JSUint32Array::s_info))
return jsString(exec, String("array"));
if (value.inherits(&JSFloat32Array::s_info) || value.inherits(&JSFloat64Array::s_info))
return jsString(exec, String("array"));
return jsUndefined();
}
JSValue jsTypeStringForValue(VM& vm, JSGlobalObject* globalObject, JSValue v)
{
if (v.isUndefined())
return vm.smallStrings.undefinedString();
if (v.isBoolean())
return vm.smallStrings.booleanString();
if (v.isNumber())
return vm.smallStrings.numberString();
if (v.isString())
return vm.smallStrings.stringString();
if (v.isSymbol())
return vm.smallStrings.symbolString();
if (v.isObject()) {
JSObject* object = asObject(v);
// Return "undefined" for objects that should be treated
// as null when doing comparisons.
if (object->structure(vm)->masqueradesAsUndefined(globalObject))
return vm.smallStrings.undefinedString();
if (object->type() == JSFunctionType)
return vm.smallStrings.functionString();
if (object->inlineTypeFlags() & TypeOfShouldCallGetCallData) {
CallData callData;
JSObject* object = asObject(v);
if (object->methodTable(vm)->getCallData(object, callData) != CallTypeNone)
return vm.smallStrings.functionString();
}
}
return vm.smallStrings.objectString();
}
static void populateContextMenuItems(ExecState* exec, JSArray* array, ContextMenu& menu)
{
for (size_t i = 0; i < array->length(); ++i) {
JSObject* item = asObject(array->getIndex(exec, i));
JSValue label = item->get(exec, Identifier::fromString(exec, "label"));
JSValue type = item->get(exec, Identifier::fromString(exec, "type"));
JSValue id = item->get(exec, Identifier::fromString(exec, "id"));
JSValue enabled = item->get(exec, Identifier::fromString(exec, "enabled"));
JSValue checked = item->get(exec, Identifier::fromString(exec, "checked"));
JSValue subItems = item->get(exec, Identifier::fromString(exec, "subItems"));
if (!type.isString())
continue;
String typeString = type.toWTFString(exec);
if (typeString == "separator") {
ContextMenuItem item(SeparatorType, ContextMenuItemTagNoAction, String());
menu.appendItem(item);
} else if (typeString == "subMenu" && subItems.inherits(JSArray::info())) {
ContextMenu subMenu;
JSArray* subItemsArray = asArray(subItems);
populateContextMenuItems(exec, subItemsArray, subMenu);
ContextMenuItem item(SubmenuType, ContextMenuItemTagNoAction, label.toWTFString(exec), &subMenu);
menu.appendItem(item);
} else {
ContextMenuAction typedId = static_cast<ContextMenuAction>(ContextMenuItemBaseCustomTag + id.toInt32(exec));
ContextMenuItem menuItem((typeString == "checkbox" ? CheckableActionType : ActionType), typedId, label.toWTFString(exec));
if (!enabled.isUndefined())
menuItem.setEnabled(enabled.toBoolean(exec));
if (!checked.isUndefined())
menuItem.setChecked(checked.toBoolean(exec));
menu.appendItem(menuItem);
}
}
}
JSValue JSInjectedScriptHost::subtype(ExecState* exec)
{
if (exec->argumentCount() < 1)
return jsUndefined();
JSValue value = exec->uncheckedArgument(0);
if (value.isString())
return exec->vm().smallStrings.stringString();
if (value.isBoolean())
return exec->vm().smallStrings.booleanString();
if (value.isNumber())
return exec->vm().smallStrings.numberString();
if (value.isSymbol())
return exec->vm().smallStrings.symbolString();
JSObject* object = asObject(value);
if (object) {
if (object->isErrorInstance())
return jsNontrivialString(exec, ASCIILiteral("error"));
// Consider class constructor functions class objects.
JSFunction* function = jsDynamicCast<JSFunction*>(value);
if (function && function->isClassConstructorFunction())
return jsNontrivialString(exec, ASCIILiteral("class"));
}
if (value.inherits(JSArray::info()))
return jsNontrivialString(exec, ASCIILiteral("array"));
if (value.inherits(DirectArguments::info()) || value.inherits(ScopedArguments::info()))
return jsNontrivialString(exec, ASCIILiteral("array"));
if (value.inherits(DateInstance::info()))
return jsNontrivialString(exec, ASCIILiteral("date"));
if (value.inherits(RegExpObject::info()))
return jsNontrivialString(exec, ASCIILiteral("regexp"));
if (value.inherits(JSMap::info()))
return jsNontrivialString(exec, ASCIILiteral("map"));
if (value.inherits(JSSet::info()))
return jsNontrivialString(exec, ASCIILiteral("set"));
if (value.inherits(JSWeakMap::info()))
return jsNontrivialString(exec, ASCIILiteral("weakmap"));
if (value.inherits(JSWeakSet::info()))
return jsNontrivialString(exec, ASCIILiteral("weakset"));
if (value.inherits(JSArrayIterator::info())
|| value.inherits(JSMapIterator::info())
|| value.inherits(JSSetIterator::info())
|| value.inherits(JSStringIterator::info()))
return jsNontrivialString(exec, ASCIILiteral("iterator"));
if (value.inherits(JSInt8Array::info()) || value.inherits(JSInt16Array::info()) || value.inherits(JSInt32Array::info()))
return jsNontrivialString(exec, ASCIILiteral("array"));
if (value.inherits(JSUint8Array::info()) || value.inherits(JSUint16Array::info()) || value.inherits(JSUint32Array::info()))
return jsNontrivialString(exec, ASCIILiteral("array"));
if (value.inherits(JSFloat32Array::info()) || value.inherits(JSFloat64Array::info()))
return jsNontrivialString(exec, ASCIILiteral("array"));
return impl().subtype(exec, value);
}
EncodedJSValue JSC_HOST_CALL jsHTMLDocumentPrototypeFunctionWrite(ExecState* exec)
{
JSValue thisValue = exec->hostThisValue();
if (!thisValue.inherits(&JSHTMLDocument::s_info))
return throwVMTypeError(exec);
JSHTMLDocument* castedThis = static_cast<JSHTMLDocument*>(asObject(thisValue));
#ifdef JSC_TAINTED
/*
if we comment out the following code segement and move the detection to bindings/js/JSHTMLDocumentCustom.cpp
one of the test case like below cannot be detected anymore. need to investigate the reason behind.
document.write("hello"+document.location.href.substring(document.location.href.indexOf("default=")+8));\
the guess is the following code does not cover the primitive string.
*/
JSValue s = exec->argument(0);
if (s.isString() && s.isTainted()) {
HTMLDocument* d1 = static_cast<HTMLDocument*>(castedThis->impl());
d1->setTainted(s.isTainted());
TaintedStructure trace_struct;
trace_struct.taintedno = s.isTainted();
trace_struct.internalfunc = "jsHTMLDocumentPrototypeFunctionWrite";
trace_struct.jsfunc = "document.write";
trace_struct.action = "sink";
char msg[20];
stringstream msgss;
snprintf(msg, 20, "%s", s.toString(exec).utf8(true).data());
msgss << msg;
msgss >> trace_struct.value;
TaintedTrace* trace = TaintedTrace::getInstance();
trace->addTaintedTrace(trace_struct);
}
PassRefPtr<ScriptCallStack> createScriptCallStackFromException(JSC::ExecState* exec, JSC::JSValue& exception, size_t maxStackSize)
{
Vector<ScriptCallFrame> frames;
RefCountedArray<StackFrame> stackTrace = exec->vm().exceptionStack();
for (size_t i = 0; i < stackTrace.size() && i < maxStackSize; i++) {
if (!stackTrace[i].callee && frames.size())
break;
String functionName = stackTrace[i].friendlyFunctionName(exec);
unsigned line;
unsigned column;
stackTrace[i].computeLineAndColumn(line, column);
frames.append(ScriptCallFrame(functionName, stackTrace[i].sourceURL, line, column));
}
// FIXME: <http://webkit.org/b/115087> Web Inspector: WebCore::reportException should not evaluate JavaScript handling exceptions
// Fallback to getting at least the line and sourceURL from the exception if it has values and the exceptionStack doesn't.
if (frames.size() > 0) {
const ScriptCallFrame& firstCallFrame = frames.first();
JSObject* exceptionObject = exception.toObject(exec);
if (exception.isObject() && firstCallFrame.sourceURL().isEmpty()) {
JSValue lineValue = exceptionObject->getDirect(exec->vm(), Identifier(exec, "line"));
int lineNumber = lineValue && lineValue.isNumber() ? int(lineValue.toNumber(exec)) : 0;
JSValue sourceURLValue = exceptionObject->getDirect(exec->vm(), Identifier(exec, "sourceURL"));
String exceptionSourceURL = sourceURLValue && sourceURLValue.isString() ? sourceURLValue.toString(exec)->value(exec) : ASCIILiteral("undefined");
frames[0] = ScriptCallFrame(firstCallFrame.functionName(), exceptionSourceURL, lineNumber, 0);
}
}
return ScriptCallStack::create(frames);
}
static void appendSourceToError(CallFrame* callFrame, ErrorInstance* exception, unsigned bytecodeOffset)
{
ErrorInstance::SourceAppender appender = exception->sourceAppender();
exception->clearSourceAppender();
RuntimeType type = exception->runtimeTypeForCause();
exception->clearRuntimeTypeForCause();
if (!callFrame->codeBlock()->hasExpressionInfo())
return;
int startOffset = 0;
int endOffset = 0;
int divotPoint = 0;
unsigned line = 0;
unsigned column = 0;
CodeBlock* codeBlock;
CodeOrigin codeOrigin = callFrame->codeOrigin();
if (codeOrigin && codeOrigin.inlineCallFrame)
codeBlock = baselineCodeBlockForInlineCallFrame(codeOrigin.inlineCallFrame);
else
codeBlock = callFrame->codeBlock();
codeBlock->expressionRangeForBytecodeOffset(bytecodeOffset, divotPoint, startOffset, endOffset, line, column);
int expressionStart = divotPoint - startOffset;
int expressionStop = divotPoint + endOffset;
StringView sourceString = codeBlock->source()->source();
if (!expressionStop || expressionStart > static_cast<int>(sourceString.length()))
return;
VM* vm = &callFrame->vm();
JSValue jsMessage = exception->getDirect(*vm, vm->propertyNames->message);
if (!jsMessage || !jsMessage.isString())
return;
String message = asString(jsMessage)->value(callFrame);
if (expressionStart < expressionStop)
message = appender(message, codeBlock->source()->getRange(expressionStart, expressionStop).toString(), type, ErrorInstance::FoundExactSource);
else {
// No range information, so give a few characters of context.
int dataLength = sourceString.length();
int start = expressionStart;
int stop = expressionStart;
// Get up to 20 characters of context to the left and right of the divot, clamping to the line.
// Then strip whitespace.
while (start > 0 && (expressionStart - start < 20) && sourceString[start - 1] != '\n')
start--;
while (start < (expressionStart - 1) && isStrWhiteSpace(sourceString[start]))
start++;
while (stop < dataLength && (stop - expressionStart < 20) && sourceString[stop] != '\n')
stop++;
while (stop > expressionStart && isStrWhiteSpace(sourceString[stop - 1]))
stop--;
message = appender(message, codeBlock->source()->getRange(start, stop).toString(), type, ErrorInstance::FoundApproximateSource);
}
exception->putDirect(*vm, vm->propertyNames->message, jsString(vm, message));
}
bool JSValueIsString(JSContextRef ctx, JSValueRef value)
{
ExecState* exec = toJS(ctx);
APIEntryShim entryShim(exec);
JSValue jsValue = toJS(exec, value);
return jsValue.isString();
}
bool JSValueIsString(JSContextRef ctx, JSValueRef value)
{
ExecState* exec = toJS(ctx);
exec->globalData().heap.registerThread();
JSLock lock(exec);
JSValue jsValue = toJS(exec, value);
return jsValue.isString();
}
void JSCanvasRenderingContext2D::setFillStyle(ExecState* exec, JSValue value)
{
CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl());
if (value.isString()) {
context->setFillColor(asString(value)->value(exec));
return;
}
context->setFillStyle(toHTMLCanvasStyle(exec, value));
}
static RefPtr<InspectorValue> jsToInspectorValue(ExecState* scriptState, JSValue value, int maxDepth)
{
if (!value) {
ASSERT_NOT_REACHED();
return nullptr;
}
if (!maxDepth)
return nullptr;
maxDepth--;
if (value.isNull() || value.isUndefined())
return InspectorValue::null();
if (value.isBoolean())
return InspectorValue::create(value.asBoolean());
if (value.isNumber() && value.isDouble())
return InspectorValue::create(value.asNumber());
if (value.isNumber() && value.isMachineInt())
return InspectorValue::create(static_cast<int>(value.asMachineInt()));
if (value.isString())
return InspectorValue::create(value.getString(scriptState));
if (value.isObject()) {
if (isJSArray(value)) {
Ref<InspectorArray> inspectorArray = InspectorArray::create();
JSArray* array = asArray(value);
unsigned length = array->length();
for (unsigned i = 0; i < length; i++) {
JSValue element = array->getIndex(scriptState, i);
RefPtr<InspectorValue> elementValue = jsToInspectorValue(scriptState, element, maxDepth);
if (!elementValue)
return nullptr;
inspectorArray->pushValue(WTFMove(elementValue));
}
return WTFMove(inspectorArray);
}
Ref<InspectorObject> inspectorObject = InspectorObject::create();
JSObject* object = value.getObject();
PropertyNameArray propertyNames(scriptState, PropertyNameMode::Strings);
object->methodTable()->getOwnPropertyNames(object, scriptState, propertyNames, EnumerationMode());
for (size_t i = 0; i < propertyNames.size(); i++) {
const Identifier& name = propertyNames[i];
JSValue propertyValue = object->get(scriptState, name);
RefPtr<InspectorValue> inspectorValue = jsToInspectorValue(scriptState, propertyValue, maxDepth);
if (!inspectorValue)
return nullptr;
inspectorObject->setValue(name.string(), WTFMove(inspectorValue));
}
return WTFMove(inspectorObject);
}
ASSERT_NOT_REACHED();
return nullptr;
}
// ECMA 15.9.3
JSObject* constructDate(ExecState* exec, JSGlobalObject* globalObject, const ArgList& args)
{
VM& vm = exec->vm();
int numArgs = args.size();
double value;
if (numArgs == 0) // new Date() ECMA 15.9.3.3
value = jsCurrentTime();
else if (numArgs == 1) {
if (args.at(0).inherits(DateInstance::info()))
value = asDateInstance(args.at(0))->internalNumber();
else {
JSValue primitive = args.at(0).toPrimitive(exec);
if (primitive.isString())
value = parseDate(vm, primitive.getString(exec));
else
value = primitive.toNumber(exec);
}
} else {
double doubleArguments[7] = {
args.at(0).toNumber(exec),
args.at(1).toNumber(exec),
args.at(2).toNumber(exec),
args.at(3).toNumber(exec),
args.at(4).toNumber(exec),
args.at(5).toNumber(exec),
args.at(6).toNumber(exec)
};
if (!std::isfinite(doubleArguments[0])
|| !std::isfinite(doubleArguments[1])
|| (numArgs >= 3 && !std::isfinite(doubleArguments[2]))
|| (numArgs >= 4 && !std::isfinite(doubleArguments[3]))
|| (numArgs >= 5 && !std::isfinite(doubleArguments[4]))
|| (numArgs >= 6 && !std::isfinite(doubleArguments[5]))
|| (numArgs >= 7 && !std::isfinite(doubleArguments[6])))
value = QNaN;
else {
GregorianDateTime t;
int year = JSC::toInt32(doubleArguments[0]);
t.setYear((year >= 0 && year <= 99) ? (year + 1900) : year);
t.setMonth(JSC::toInt32(doubleArguments[1]));
t.setMonthDay((numArgs >= 3) ? JSC::toInt32(doubleArguments[2]) : 1);
t.setHour(JSC::toInt32(doubleArguments[3]));
t.setMinute(JSC::toInt32(doubleArguments[4]));
t.setSecond(JSC::toInt32(doubleArguments[5]));
t.setIsDST(-1);
double ms = (numArgs >= 7) ? doubleArguments[6] : 0;
value = gregorianDateTimeToMS(vm, t, ms, false);
}
}
return DateInstance::create(vm, globalObject->dateStructure(), value);
}
static std::error_code loadAction(ExecState& exec, const JSObject& ruleObject, Action& action, bool& validSelector)
{
VM& vm = exec.vm();
auto scope = DECLARE_THROW_SCOPE(vm);
validSelector = true;
const JSValue actionObject = ruleObject.get(&exec, Identifier::fromString(&exec, "action"));
if (!actionObject || scope.exception() || !actionObject.isObject())
return ContentExtensionError::JSONInvalidAction;
const JSValue typeObject = actionObject.get(&exec, Identifier::fromString(&exec, "type"));
if (!typeObject || scope.exception() || !typeObject.isString())
return ContentExtensionError::JSONInvalidActionType;
String actionType = typeObject.toWTFString(&exec);
if (actionType == "block")
action = ActionType::BlockLoad;
else if (actionType == "ignore-previous-rules")
action = ActionType::IgnorePreviousRules;
else if (actionType == "block-cookies")
action = ActionType::BlockCookies;
else if (actionType == "css-display-none") {
JSValue selector = actionObject.get(&exec, Identifier::fromString(&exec, "selector"));
if (!selector || scope.exception() || !selector.isString())
return ContentExtensionError::JSONInvalidCSSDisplayNoneActionType;
String s = selector.toWTFString(&exec);
if (!isValidSelector(s)) {
// Skip rules with invalid selectors to be backwards-compatible.
validSelector = false;
return { };
}
action = Action(ActionType::CSSDisplayNoneSelector, s);
} else if (actionType == "make-https") {
action = ActionType::MakeHTTPS;
} else
return ContentExtensionError::JSONInvalidActionType;
return { };
}
JSValue JSC_HOST_CALL stringProtoFuncToString(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&)
{
// Also used for valueOf.
if (thisValue.isString())
return thisValue;
if (thisValue.isObject(&StringObject::info))
return asStringObject(thisValue)->internalValue();
return throwError(exec, TypeError);
}
static void appendSourceToError(CallFrame* callFrame, ErrorInstance* exception, unsigned bytecodeOffset)
{
exception->clearAppendSourceToMessage();
if (!callFrame->codeBlock()->hasExpressionInfo())
return;
int startOffset = 0;
int endOffset = 0;
int divotPoint = 0;
unsigned line = 0;
unsigned column = 0;
CodeBlock* codeBlock = callFrame->codeBlock();
codeBlock->expressionRangeForBytecodeOffset(bytecodeOffset, divotPoint, startOffset, endOffset, line, column);
int expressionStart = divotPoint - startOffset;
int expressionStop = divotPoint + endOffset;
const String& sourceString = codeBlock->source()->source();
if (!expressionStop || expressionStart > static_cast<int>(sourceString.length()))
return;
VM* vm = &callFrame->vm();
JSValue jsMessage = exception->getDirect(*vm, vm->propertyNames->message);
if (!jsMessage || !jsMessage.isString())
return;
String message = asString(jsMessage)->value(callFrame);
if (expressionStart < expressionStop)
message = makeString(message, " (evaluating '", codeBlock->source()->getRange(expressionStart, expressionStop), "')");
else {
// No range information, so give a few characters of context.
const StringImpl* data = sourceString.impl();
int dataLength = sourceString.length();
int start = expressionStart;
int stop = expressionStart;
// Get up to 20 characters of context to the left and right of the divot, clamping to the line.
// Then strip whitespace.
while (start > 0 && (expressionStart - start < 20) && (*data)[start - 1] != '\n')
start--;
while (start < (expressionStart - 1) && isStrWhiteSpace((*data)[start]))
start++;
while (stop < dataLength && (stop - expressionStart < 20) && (*data)[stop] != '\n')
stop++;
while (stop > expressionStart && isStrWhiteSpace((*data)[stop - 1]))
stop--;
message = makeString(message, " (near '...", codeBlock->source()->getRange(start, stop), "...')");
}
exception->putDirect(*vm, vm->propertyNames->message, jsString(vm, message));
}
JSValue RegExpConstructor::getLastParen(ExecState* exec)
{
JSArray* array = m_cachedResult.lastResult(exec, this);
unsigned length = array->length();
if (length > 1) {
JSValue result = JSValue(array).get(exec, length - 1);
ASSERT(result.isString() || result.isUndefined());
if (!result.isUndefined())
return result;
}
return jsEmptyString(exec);
}
JSValue RegExpConstructor::getBackref(ExecState* exec, unsigned i)
{
JSArray* array = m_cachedResult.lastResult(exec, this);
if (i < array->length()) {
JSValue result = JSValue(array).get(exec, i);
ASSERT(result.isString() || result.isUndefined());
if (!result.isUndefined())
return result;
}
return jsEmptyString(exec);
}
static PassRefPtr<InspectorValue> jsToInspectorValue(ScriptState* scriptState, JSValue value, int maxDepth)
{
if (!value) {
ASSERT_NOT_REACHED();
return 0;
}
if (!maxDepth)
return 0;
maxDepth--;
if (value.isNull() || value.isUndefined())
return InspectorValue::null();
if (value.isBoolean())
return InspectorBasicValue::create(value.asBoolean());
if (value.isNumber())
return InspectorBasicValue::create(value.asNumber());
if (value.isString()) {
String s = value.getString(scriptState);
return InspectorString::create(String(s.characters(), s.length()));
}
if (value.isObject()) {
if (isJSArray(value)) {
RefPtr<InspectorArray> inspectorArray = InspectorArray::create();
JSArray* array = asArray(value);
unsigned length = array->length();
for (unsigned i = 0; i < length; i++) {
// FIXME: What if the array is in sparse mode? https://bugs.webkit.org/show_bug.cgi?id=95610
JSValue element = array->getIndexQuickly(i);
RefPtr<InspectorValue> elementValue = jsToInspectorValue(scriptState, element, maxDepth);
if (!elementValue)
return 0;
inspectorArray->pushValue(elementValue);
}
return inspectorArray;
}
RefPtr<InspectorObject> inspectorObject = InspectorObject::create();
JSObject* object = value.getObject();
PropertyNameArray propertyNames(scriptState);
object->methodTable()->getOwnPropertyNames(object, scriptState, propertyNames, ExcludeDontEnumProperties);
for (size_t i = 0; i < propertyNames.size(); i++) {
const Identifier& name = propertyNames[i];
JSValue propertyValue = object->get(scriptState, name);
RefPtr<InspectorValue> inspectorValue = jsToInspectorValue(scriptState, propertyValue, maxDepth);
if (!inspectorValue)
return 0;
inspectorObject->setValue(String(name.characters(), name.length()), inspectorValue);
}
return inspectorObject;
}
ASSERT_NOT_REACHED();
return 0;
}
static TriState equalToStringImpl(JSValue value, StringImpl* stringImpl)
{
if (!value.isString())
return FalseTriState;
JSString* jsString = asString(value);
const StringImpl* string = jsString->tryGetValueImpl();
if (!string)
return MixedTriState;
return triState(WTF::equal(stringImpl, string));
}
bool JSValueIsString(JSContextRef ctx, JSValueRef value)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return false;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJS(exec, value);
return jsValue.isString();
}
// ECMA 15.9.3
JSObject* constructDate(ExecState* exec, JSGlobalObject* globalObject, const ArgList& args)
{
int numArgs = args.size();
double value;
if (numArgs == 0) // new Date() ECMA 15.9.3.3
value = jsCurrentTime();
else if (numArgs == 1) {
if (args.at(0).inherits(&DateInstance::s_info))
value = asDateInstance(args.at(0))->internalNumber();
else {
JSValue primitive = args.at(0).toPrimitive(exec);
if (primitive.isString())
value = parseDate(exec, primitive.getString(exec));
else
value = primitive.toNumber(exec);
}
} else {
double doubleArguments[7] = {
args.at(0).toNumber(exec),
args.at(1).toNumber(exec),
args.at(2).toNumber(exec),
args.at(3).toNumber(exec),
args.at(4).toNumber(exec),
args.at(5).toNumber(exec),
args.at(6).toNumber(exec)
};
if (isnan(doubleArguments[0])
|| isnan(doubleArguments[1])
|| (numArgs >= 3 && isnan(doubleArguments[2]))
|| (numArgs >= 4 && isnan(doubleArguments[3]))
|| (numArgs >= 5 && isnan(doubleArguments[4]))
|| (numArgs >= 6 && isnan(doubleArguments[5]))
|| (numArgs >= 7 && isnan(doubleArguments[6])))
value = NaN;
else {
GregorianDateTime t;
int year = JSC::toInt32(doubleArguments[0]);
t.year = (year >= 0 && year <= 99) ? year : year - 1900;
t.month = JSC::toInt32(doubleArguments[1]);
t.monthDay = (numArgs >= 3) ? JSC::toInt32(doubleArguments[2]) : 1;
t.hour = JSC::toInt32(doubleArguments[3]);
t.minute = JSC::toInt32(doubleArguments[4]);
t.second = JSC::toInt32(doubleArguments[5]);
t.isDST = -1;
double ms = (numArgs >= 7) ? doubleArguments[6] : 0;
value = gregorianDateTimeToMS(exec, t, ms, false);
}
}
return new (exec) DateInstance(exec, globalObject->dateStructure(), value);
}
