bool JSCustomSQLStatementErrorCallback::handleEvent(SQLTransaction* transaction, SQLError* error)
{
ASSERT(m_callback);
ASSERT(m_frame);
if (!m_frame->script()->isEnabled())
return true;
JSGlobalObject* globalObject = m_frame->script()->globalObject();
ExecState* exec = globalObject->globalExec();
KJS::JSLock lock;
JSValue* handleEventFunction = m_callback->get(exec, Identifier(exec, "handleEvent"));
CallData handleEventCallData;
CallType handleEventCallType = handleEventFunction->getCallData(handleEventCallData);
CallData callbackCallData;
CallType callbackCallType = CallTypeNone;
if (handleEventCallType == CallTypeNone) {
callbackCallType = m_callback->getCallData(callbackCallData);
if (callbackCallType == CallTypeNone) {
// FIXME: Should an exception be thrown here?
return true;
}
}
RefPtr<JSCustomSQLStatementErrorCallback> protect(this);
ArgList args;
args.append(toJS(exec, transaction));
args.append(toJS(exec, error));
JSValue* result;
globalObject->startTimeoutCheck();
if (handleEventCallType != CallTypeNone)
result = call(exec, handleEventFunction, handleEventCallType, handleEventCallData, m_callback, args);
else
result = call(exec, m_callback, callbackCallType, callbackCallData, m_callback, args);
globalObject->stopTimeoutCheck();
if (exec->hadException()) {
JSObject* exception = exec->exception()->toObject(exec);
String message = exception->get(exec, exec->propertyNames().message)->toString(exec);
int lineNumber = exception->get(exec, Identifier(exec, "line"))->toInt32(exec);
String sourceURL = exception->get(exec, Identifier(exec, "sourceURL"))->toString(exec);
m_frame->domWindow()->console()->addMessage(JSMessageSource, ErrorMessageLevel, message, lineNumber, sourceURL);
exec->clearException();
// The spec says:
// "If the error callback returns false, then move on to the next statement..."
// "Otherwise, the error callback did not return false, or there was no error callback"
// Therefore an exception and returning true are the same thing - so, return true on an exception
return true;
}
Document::updateDocumentsRendering();
return result->toBoolean(exec);
}
PassRefPtr<FunctionCodeBlock> FunctionExecutable::produceCodeBlockFor(JSScope* scope, CodeSpecializationKind specializationKind, JSObject*& exception)
{
RefPtr<FunctionCodeBlock> alternative = codeBlockFor(specializationKind);
if (!!alternative) {
RefPtr<FunctionCodeBlock> result = adoptRef(new FunctionCodeBlock(CodeBlock::CopyParsedBlock, *codeBlockFor(specializationKind)));
result->setAlternative(alternative);
return result.release();
}
VM* vm = scope->vm();
JSGlobalObject* globalObject = scope->globalObject();
ParserError error;
DebuggerMode debuggerMode = globalObject->hasDebugger() ? DebuggerOn : DebuggerOff;
ProfilerMode profilerMode = globalObject->hasProfiler() ? ProfilerOn : ProfilerOff;
UnlinkedFunctionCodeBlock* unlinkedCodeBlock = m_unlinkedExecutable->codeBlockFor(*vm, m_source, specializationKind, debuggerMode, profilerMode, error);
recordParse(m_unlinkedExecutable->features(), m_unlinkedExecutable->hasCapturedVariables(), lineNo(), lastLine(), startColumn());
if (!unlinkedCodeBlock) {
exception = error.toErrorObject(globalObject, m_source);
return 0;
}
SourceProvider* provider = source().provider();
unsigned sourceOffset = source().startOffset();
unsigned startColumn = source().startColumn();
return adoptRef(new FunctionCodeBlock(this, unlinkedCodeBlock, scope, provider, sourceOffset, startColumn));
}
JSBool JSJSGlobalObject::fromjs_isTimerValid(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) {
// get instance
JSGlobalObject *object = static_cast<JSGlobalObject *>(reinterpret_cast<JSScriptable *>(JS_GetPrivate(cx, obj)));
if (!object) {
JSScriptable::js_throwNullCallException(JSJSGlobalObject::classDescriptor.name, JSJSGlobalObject::functionTable[4].name);
return JS_FALSE;
}
// record context
object->js_setCurrentContext(cx);
// JSTimer *timer
JSObject *p0;
if (!JS_ValueToObject(cx, argv[0], &p0))
return JS_FALSE;
argv[0] = OBJECT_TO_JSVAL(p0);
JSTimer *p0o = NULL;
if (p0) {
JSScriptable *pobj = reinterpret_cast<JSScriptable*>(JS_GetPrivate(cx, p0));
if (!pobj) {
object->js_throwNullParamException(0, JSJSGlobalObject::functionTable[4].name, JSJSGlobalObject::classDescriptor.name);
return JS_FALSE;
}
p0o = static_cast<JSTimer *>(pobj->js_getInterface(JS_JSTimer_GUID));
if (!p0o) {
object->js_throwParamTypeException(0, JSJSTimer::classDescriptor.name, JSJSGlobalObject::functionTable[4].name, JSJSGlobalObject::classDescriptor.name);
return JS_FALSE;
}
}
// call method
ASSERT(object != NULL);
bool rv = object->isTimerValid(p0o);
// handle return value
*rval = BOOLEAN_TO_JSVAL(rv);
// success
return JS_TRUE;
}
bool FunctionExecutable::compileForConstruct(ExecState*, ScopeChainNode* scopeChainNode)
{
JSGlobalData* globalData = scopeChainNode->globalData;
RefPtr<FunctionBodyNode> body = globalData->parser->parse<FunctionBodyNode>(globalData, 0, 0, m_source);
if (!body)
return false;
if (m_forceUsesArguments)
body->setUsesArguments();
body->finishParsing(m_parameters, m_name);
recordParse(body->features(), body->lineNo(), body->lastLine());
ScopeChain scopeChain(scopeChainNode);
JSGlobalObject* globalObject = scopeChain.globalObject();
ASSERT(!m_codeBlockForConstruct);
m_codeBlockForConstruct = new FunctionCodeBlock(this, FunctionCode, source().provider(), source().startOffset(), true);
OwnPtr<BytecodeGenerator> generator(new BytecodeGenerator(body.get(), globalObject->debugger(), scopeChain, m_codeBlockForConstruct->symbolTable(), m_codeBlockForConstruct));
generator->generate();
m_numParametersForConstruct = m_codeBlockForConstruct->m_numParameters;
ASSERT(m_numParametersForConstruct);
m_numVariables = m_codeBlockForConstruct->m_numVars;
m_symbolTable = m_codeBlockForConstruct->sharedSymbolTable();
body->destroyData();
return true;
}
std::error_code parseRuleList(const String& rules, Vector<ContentExtensionRule>& ruleList)
{
#if CONTENT_EXTENSIONS_PERFORMANCE_REPORTING
double loadExtensionStartTime = monotonicallyIncreasingTime();
#endif
RefPtr<VM> vm = VM::create();
JSLockHolder locker(vm.get());
JSGlobalObject* globalObject = JSGlobalObject::create(*vm, JSGlobalObject::createStructure(*vm, jsNull()));
ExecState* exec = globalObject->globalExec();
auto error = loadEncodedRules(*exec, rules, ruleList);
vm = nullptr;
if (error)
return error;
if (ruleList.isEmpty())
return ContentExtensionError::JSONContainsNoRules;
#if CONTENT_EXTENSIONS_PERFORMANCE_REPORTING
double loadExtensionEndTime = monotonicallyIncreasingTime();
dataLogF("Time spent loading extension %f\n", (loadExtensionEndTime - loadExtensionStartTime));
#endif
return { };
}
String Database::toJSON() const
{
JSGlobalObject* globalObject = JSGlobalObject::create(
m_vm, JSGlobalObject::createStructure(m_vm, jsNull()));
return JSONStringify(globalObject->globalExec(), toJS(globalObject->globalExec()), 0);
}
JSObject* ProgramExecutable::initializeGlobalProperties(VM& vm, CallFrame* callFrame, JSScope* scope)
{
RELEASE_ASSERT(scope);
JSGlobalObject* globalObject = scope->globalObject();
RELEASE_ASSERT(globalObject);
ASSERT(&globalObject->vm() == &vm);
JSObject* exception = 0;
UnlinkedProgramCodeBlock* unlinkedCodeBlock = globalObject->createProgramCodeBlock(callFrame, this, &exception);
if (exception)
return exception;
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());
}
}
const VariableEnvironment& variableDeclarations = unlinkedCodeBlock->variableDeclarations();
for (auto& entry : variableDeclarations) {
ASSERT(entry.value.isVar());
globalObject->addVar(callFrame, Identifier::fromUid(&vm, entry.key.get()));
}
return 0;
}
EncodedJSValue jsTestNondeterministicNondeterministicSetterExceptionAttr(ExecState* state, EncodedJSValue thisValue, PropertyName)
{
UNUSED_PARAM(state);
UNUSED_PARAM(thisValue);
JSValue decodedThisValue = JSValue::decode(thisValue);
auto* castedThis = jsDynamicCast<JSTestNondeterministic*>(decodedThisValue);
if (UNLIKELY(!castedThis)) {
return throwGetterTypeError(*state, "TestNondeterministic", "nondeterministicSetterExceptionAttr");
}
#if ENABLE(WEB_REPLAY)
JSGlobalObject* globalObject = state->lexicalGlobalObject();
InputCursor& cursor = globalObject->inputCursor();
static NeverDestroyed<const AtomicString> bindingName("TestNondeterministic.nondeterministicSetterExceptionAttr", AtomicString::ConstructFromLiteral);
if (cursor.isCapturing()) {
String memoizedResult = castedThis->wrapped().nondeterministicSetterExceptionAttr();
cursor.appendInput<MemoizedDOMResult<String>>(bindingName.get().string(), memoizedResult, 0);
JSValue result = jsStringWithCache(state, memoizedResult);
return JSValue::encode(result);
}
if (cursor.isReplaying()) {
String memoizedResult;
MemoizedDOMResultBase* input = cursor.fetchInput<MemoizedDOMResultBase>();
if (input && input->convertTo<String>(memoizedResult)) {
JSValue result = jsStringWithCache(state, memoizedResult);
return JSValue::encode(result);
}
}
#endif
auto& impl = castedThis->wrapped();
JSValue result = jsStringWithCache(state, impl.nondeterministicSetterExceptionAttr());
return JSValue::encode(result);
}
JSObject* ProgramExecutable::compileInternal(ExecState* exec, ScopeChainNode* scopeChainNode)
{
ASSERT(!m_programCodeBlock);
JSObject* exception = 0;
JSGlobalData* globalData = &exec->globalData();
JSGlobalObject* lexicalGlobalObject = exec->lexicalGlobalObject();
RefPtr<ProgramNode> programNode = globalData->parser->parse<ProgramNode>(lexicalGlobalObject, lexicalGlobalObject->debugger(), exec, m_source, 0, isStrictMode() ? JSParseStrict : JSParseNormal, &exception);
if (!programNode) {
ASSERT(exception);
return exception;
}
recordParse(programNode->features(), programNode->hasCapturedVariables(), programNode->lineNo(), programNode->lastLine());
ScopeChain scopeChain(scopeChainNode);
JSGlobalObject* globalObject = scopeChain.globalObject();
m_programCodeBlock = adoptPtr(new ProgramCodeBlock(this, GlobalCode, globalObject, source().provider()));
OwnPtr<BytecodeGenerator> generator(adoptPtr(new BytecodeGenerator(programNode.get(), scopeChain, &globalObject->symbolTable(), m_programCodeBlock.get())));
generator->generate();
programNode->destroyData();
#if ENABLE(JIT)
if (exec->globalData().canUseJIT()) {
m_jitCodeForCall = JIT::compile(scopeChainNode->globalData, m_programCodeBlock.get());
#if !ENABLE(OPCODE_SAMPLING)
if (!BytecodeGenerator::dumpsGeneratedCode())
m_programCodeBlock->discardBytecode();
#endif
}
#endif
return 0;
}
JSValueRef JSEvaluateScriptInternal(const JSLockHolder&, ExecState* exec, JSContextRef ctx, JSObjectRef thisObject, const SourceCode& source, JSValueRef* exception)
{
UNUSED_PARAM(ctx);
JSObject* jsThisObject = toJS(thisObject);
// evaluate sets "this" to the global object if it is NULL
VM& vm = exec->vm();
JSGlobalObject* globalObject = vm.vmEntryGlobalObject(exec);
NakedPtr<Exception> evaluationException;
JSValue returnValue = profiledEvaluate(globalObject->globalExec(), ProfilingReason::API, source, jsThisObject, evaluationException);
if (evaluationException) {
if (exception)
*exception = toRef(exec, evaluationException->value());
#if ENABLE(REMOTE_INSPECTOR)
// FIXME: If we have a debugger attached we could learn about ParseError exceptions through
// ScriptDebugServer::sourceParsed and this path could produce a duplicate warning. The
// Debugger path is currently ignored by inspector.
// NOTE: If we don't have a debugger, this SourceCode will be forever lost to the inspector.
// We could stash it in the inspector in case an inspector is ever opened.
globalObject->inspectorController().reportAPIException(exec, evaluationException);
#endif
return nullptr;
}
if (returnValue)
return toRef(exec, returnValue);
// happens, for example, when the only statement is an empty (';') statement
return toRef(exec, jsUndefined());
}
ExceptionInfo* FunctionExecutable::reparseExceptionInfo(JSGlobalData* globalData, ScopeChainNode* scopeChainNode, CodeBlock* codeBlock)
{
RefPtr<FunctionBodyNode> newFunctionBody = globalData->parser->parse<FunctionBodyNode>(globalData, 0, 0, m_source);
if (m_forceUsesArguments)
newFunctionBody->setUsesArguments();
newFunctionBody->finishParsing(m_parameters, m_name);
ScopeChain scopeChain(scopeChainNode);
JSGlobalObject* globalObject = scopeChain.globalObject();
OwnPtr<CodeBlock> newCodeBlock(new FunctionCodeBlock(this, FunctionCode, source().provider(), source().startOffset()));
globalData->functionCodeBlockBeingReparsed = newCodeBlock.get();
OwnPtr<BytecodeGenerator> generator(new BytecodeGenerator(newFunctionBody.get(), globalObject->debugger(), scopeChain, newCodeBlock->symbolTable(), newCodeBlock.get()));
generator->setRegeneratingForExceptionInfo(static_cast<FunctionCodeBlock*>(codeBlock));
generator->generate();
ASSERT(newCodeBlock->instructionCount() == codeBlock->instructionCount());
#if ENABLE(JIT)
JITCode newJITCode = JIT::compile(globalData, newCodeBlock.get());
ASSERT(newJITCode.size() == generatedJITCode().size());
#endif
globalData->functionCodeBlockBeingReparsed = 0;
return newCodeBlock->extractExceptionInfo();
}
EncodedJSValue jsTestNondeterministicNondeterministicWriteableAttr(ExecState* exec, JSObject* slotBase, EncodedJSValue thisValue, PropertyName)
{
UNUSED_PARAM(exec);
UNUSED_PARAM(slotBase);
UNUSED_PARAM(thisValue);
JSTestNondeterministic* castedThis = jsDynamicCast<JSTestNondeterministic*>(JSValue::decode(thisValue));
if (UNLIKELY(!castedThis)) {
if (jsDynamicCast<JSTestNondeterministicPrototype*>(slotBase))
return reportDeprecatedGetterError(*exec, "TestNondeterministic", "nondeterministicWriteableAttr");
return throwGetterTypeError(*exec, "TestNondeterministic", "nondeterministicWriteableAttr");
}
#if ENABLE(WEB_REPLAY)
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
InputCursor& cursor = globalObject->inputCursor();
static NeverDestroyed<const AtomicString> bindingName("TestNondeterministic.nondeterministicWriteableAttr", AtomicString::ConstructFromLiteral);
if (cursor.isCapturing()) {
String memoizedResult = castedThis->impl().nondeterministicWriteableAttr();
cursor.appendInput<MemoizedDOMResult<String>>(bindingName.get().string(), memoizedResult, 0);
JSValue result = jsStringWithCache(exec, memoizedResult);
return JSValue::encode(result);
}
if (cursor.isReplaying()) {
String memoizedResult;
MemoizedDOMResultBase* input = cursor.fetchInput<MemoizedDOMResultBase>();
if (input && input->convertTo<String>(memoizedResult)) {
JSValue result = jsStringWithCache(exec, memoizedResult);
return JSValue::encode(result);
}
}
#endif
TestNondeterministic& impl = castedThis->impl();
JSValue result = jsStringWithCache(exec, impl.nondeterministicWriteableAttr());
return JSValue::encode(result);
}
// ECMA 15.3.2 The Function Constructor
JSObject* constructFunction(ExecState* exec, const ArgList& args, const Identifier& functionName, const UString& sourceURL, int lineNumber)
{
// Functions need to have a space following the opening { due to for web compatibility
// see https://bugs.webkit.org/show_bug.cgi?id=24350
// We also need \n before the closing } to handle // comments at the end of the last line
UString program;
if (args.isEmpty())
program = "(function() { \n})";
else if (args.size() == 1)
program = makeString("(function() { ", args.at(0).toString(exec), "\n})");
else {
StringBuilder builder;
builder.append("(function(");
builder.append(args.at(0).toString(exec));
for (size_t i = 1; i < args.size() - 1; i++) {
builder.append(",");
builder.append(args.at(i).toString(exec));
}
builder.append(") { ");
builder.append(args.at(args.size() - 1).toString(exec));
builder.append("\n})");
program = builder.build();
}
int errLine;
UString errMsg;
SourceCode source = makeSource(program, sourceURL, lineNumber);
RefPtr<FunctionExecutable> function = FunctionExecutable::fromGlobalCode(functionName, exec, exec->dynamicGlobalObject()->debugger(), source, &errLine, &errMsg);
if (!function)
return throwError(exec, SyntaxError, errMsg, errLine, source.provider()->asID(), source.provider()->url());
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
ScopeChain scopeChain(globalObject, globalObject->globalData(), globalObject, exec->globalThisValue());
return new (exec) JSFunction(exec, function, scopeChain.node());
}
// ECMA 15.3.2 The Function Constructor
JSObject* constructFunction(ExecState* exec, const ArgList& args, const Identifier& functionName, const UString& sourceURL, int lineNumber)
{
UString program;
if (args.isEmpty())
program = "(function(){})";
else if (args.size() == 1)
program = "(function(){" + args.at(exec, 0)->toString(exec) + "})";
else {
program = "(function(" + args.at(exec, 0)->toString(exec);
for (size_t i = 1; i < args.size() - 1; i++)
program += "," + args.at(exec, i)->toString(exec);
program += "){" + args.at(exec, args.size() - 1)->toString(exec) + "})";
}
int errLine;
UString errMsg;
SourceCode source = makeSource(program, sourceURL, lineNumber);
RefPtr<ProgramNode> programNode = exec->globalData().parser->parse<ProgramNode>(exec, exec->dynamicGlobalObject()->debugger(), source, &errLine, &errMsg);
FunctionBodyNode* body = functionBody(programNode.get());
if (!body)
return throwError(exec, SyntaxError, errMsg, errLine, source.provider()->asID(), source.provider()->url());
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
ScopeChain scopeChain(globalObject, globalObject->globalData(), exec->globalThisValue());
return new (exec) JSFunction(exec, functionName, body, scopeChain.node());
}
JSValueRef JSEvaluateScript(JSContextRef ctx, JSStringRef script, JSObjectRef thisObject, JSStringRef sourceURL, int startingLineNumber, JSValueRef* exception)
{
ExecState* exec = toJS(ctx);
exec->globalData().heap.registerThread();
JSLock lock(exec);
JSObject* jsThisObject = toJS(thisObject);
// evaluate sets "this" to the global object if it is NULL
JSGlobalObject* globalObject = exec->dynamicGlobalObject();
SourceCode source = makeSource(script->ustring(), sourceURL->ustring(), startingLineNumber);
Completion completion = evaluate(globalObject->globalExec(), globalObject->globalScopeChain(), source, jsThisObject);
if (completion.complType() == Throw) {
if (exception)
*exception = toRef(completion.value());
return 0;
}
if (completion.value())
return toRef(completion.value());
// happens, for example, when the only statement is an empty (';') statement
return toRef(jsUndefined());
}
JSObject* EvalExecutable::compileInternal(ExecState* exec, ScopeChainNode* scopeChainNode, JITCode::JITType jitType)
{
SamplingRegion samplingRegion(jitType == JITCode::BaselineJIT ? "Baseline Compilation (TOTAL)" : "DFG Compilation (TOTAL)");
#if !ENABLE(JIT)
UNUSED_PARAM(jitType);
#endif
JSObject* exception = 0;
JSGlobalData* globalData = &exec->globalData();
JSGlobalObject* lexicalGlobalObject = exec->lexicalGlobalObject();
if (!!m_evalCodeBlock && m_evalCodeBlock->canProduceCopyWithBytecode()) {
BytecodeDestructionBlocker blocker(m_evalCodeBlock.get());
OwnPtr<EvalCodeBlock> newCodeBlock = adoptPtr(new EvalCodeBlock(CodeBlock::CopyParsedBlock, *m_evalCodeBlock));
newCodeBlock->setAlternative(static_pointer_cast<CodeBlock>(m_evalCodeBlock.release()));
m_evalCodeBlock = newCodeBlock.release();
} else {
if (!lexicalGlobalObject->evalEnabled())
return throwError(exec, createEvalError(exec, "Eval is disabled"));
RefPtr<EvalNode> evalNode = parse<EvalNode>(globalData, lexicalGlobalObject, m_source, 0, isStrictMode() ? JSParseStrict : JSParseNormal, EvalNode::isFunctionNode ? JSParseFunctionCode : JSParseProgramCode, lexicalGlobalObject->debugger(), exec, &exception);
if (!evalNode) {
ASSERT(exception);
return exception;
}
recordParse(evalNode->features(), evalNode->hasCapturedVariables(), evalNode->lineNo(), evalNode->lastLine());
JSGlobalObject* globalObject = scopeChainNode->globalObject.get();
OwnPtr<CodeBlock> previousCodeBlock = m_evalCodeBlock.release();
ASSERT((jitType == JITCode::bottomTierJIT()) == !previousCodeBlock);
m_evalCodeBlock = adoptPtr(new EvalCodeBlock(this, globalObject, source().provider(), scopeChainNode->localDepth(), previousCodeBlock.release()));
OwnPtr<BytecodeGenerator> generator(adoptPtr(new BytecodeGenerator(evalNode.get(), scopeChainNode, m_evalCodeBlock->symbolTable(), m_evalCodeBlock.get(), !!m_evalCodeBlock->alternative() ? OptimizingCompilation : FirstCompilation)));
if ((exception = generator->generate())) {
m_evalCodeBlock = static_pointer_cast<EvalCodeBlock>(m_evalCodeBlock->releaseAlternative());
evalNode->destroyData();
return exception;
}
evalNode->destroyData();
m_evalCodeBlock->copyPostParseDataFromAlternative();
}
#if ENABLE(JIT)
if (!jitCompileIfAppropriate(*globalData, m_evalCodeBlock, m_jitCodeForCall, jitType))
return 0;
#endif
#if ENABLE(JIT)
#if ENABLE(INTERPRETER)
if (!m_jitCodeForCall)
Heap::heap(this)->reportExtraMemoryCost(sizeof(*m_evalCodeBlock));
else
#endif
Heap::heap(this)->reportExtraMemoryCost(sizeof(*m_evalCodeBlock) + m_jitCodeForCall.size());
#else
Heap::heap(this)->reportExtraMemoryCost(sizeof(*m_evalCodeBlock));
#endif
return 0;
}
EncodedJSValue doCallToJavaScript(void* executableAddress, ProtoCallFrame* protoCallFrame)
{
CodeBlock* codeBlock = protoCallFrame->codeBlock();
JSScope* scope = protoCallFrame->scope();
JSObject* callee = protoCallFrame->callee();
int argCountIncludingThis = protoCallFrame->argumentCountIncludingThis();
int argCount = protoCallFrame->argumentCount();
JSValue thisValue = protoCallFrame->thisValue();
JSStack& stack = scope->vm()->interpreter->stack();
CallFrame* newCallFrame = stack.pushFrame(codeBlock, scope, argCountIncludingThis, callee);
if (UNLIKELY(!newCallFrame)) {
JSGlobalObject* globalObject = scope->globalObject();
ExecState* exec = globalObject->globalExec();
return JSValue::encode(throwStackOverflowError(exec));
}
// Set the arguments for the callee:
newCallFrame->setThisValue(thisValue);
for (int i = 0; i < argCount; ++i)
newCallFrame->setArgument(i, protoCallFrame->argument(i));
JSValue result = execute(newCallFrame, executableAddress);
stack.popFrame(newCallFrame);
return JSValue::encode(result);
}
JSValueRef JSEvaluateScript(JSContextRef ctx, JSStringRef script, JSObjectRef thisObject, JSStringRef sourceURL, int startingLineNumber, JSValueRef* exception)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return 0;
}
ExecState* exec = toJS(ctx);
APIEntryShim entryShim(exec);
JSObject* jsThisObject = toJS(thisObject);
startingLineNumber = std::max(1, startingLineNumber);
// evaluate sets "this" to the global object if it is NULL
JSGlobalObject* globalObject = exec->vmEntryGlobalObject();
SourceCode source = makeSource(script->string(), sourceURL->string(), TextPosition(OrdinalNumber::fromOneBasedInt(startingLineNumber), OrdinalNumber::first()));
JSValue evaluationException;
JSValue returnValue = evaluate(globalObject->globalExec(), source, jsThisObject, &evaluationException);
if (evaluationException) {
if (exception)
*exception = toRef(exec, evaluationException);
return 0;
}
if (returnValue)
return toRef(exec, returnValue);
// happens, for example, when the only statement is an empty (';') statement
return toRef(exec, jsUndefined());
}
EncodedJSValue JSC_HOST_CALL IntlCollatorPrototypeGetterCompare(ExecState* exec)
{
// 10.3.3 Intl.Collator.prototype.compare (ECMA-402 2.0)
// 1. Let collator be this Collator object.
IntlCollator* collator = jsDynamicCast<IntlCollator*>(exec->thisValue());
if (!collator)
return JSValue::encode(throwTypeError(exec, ASCIILiteral("Intl.Collator.prototype.compare called on value that's not an object initialized as a Collator")));
JSBoundFunction* boundCompare = collator->boundCompare();
// 2. If collator.[[boundCompare]] is undefined,
if (!boundCompare) {
VM& vm = exec->vm();
JSGlobalObject* globalObject = collator->globalObject();
// a. Let F be a new built-in function object as defined in 11.3.4.
// b. The value of F’s length property is 2.
JSFunction* targetObject = JSFunction::create(vm, globalObject, 2, ASCIILiteral("compare"), IntlCollatorFuncCompare, NoIntrinsic);
JSArray* boundArgs = JSArray::tryCreateUninitialized(vm, globalObject->arrayStructureForIndexingTypeDuringAllocation(ArrayWithUndecided), 0);
if (!boundArgs)
return JSValue::encode(throwOutOfMemoryError(exec));
// c. Let bc be BoundFunctionCreate(F, «this value»).
boundCompare = JSBoundFunction::create(vm, globalObject, targetObject, collator, boundArgs, 2, ASCIILiteral("compare"));
// d. Set collator.[[boundCompare]] to bc.
collator->setBoundCompare(vm, boundCompare);
}
// 3. Return collator.[[boundCompare]].
return JSValue::encode(boundCompare);
}
void InspectorHeapAgent::getRemoteObject(ErrorString& errorString, int heapObjectId, const String* optionalObjectGroup, RefPtr<Inspector::Protocol::Runtime::RemoteObject>& result)
{
// Prevent the cell from getting collected as we look it up.
VM& vm = m_environment.vm();
JSLockHolder lock(vm);
DeferGC deferGC(vm.heap);
unsigned heapObjectIdentifier = static_cast<unsigned>(heapObjectId);
const Optional<HeapSnapshotNode> optionalNode = nodeForHeapObjectIdentifier(errorString, heapObjectIdentifier);
if (!optionalNode)
return;
JSCell* cell = optionalNode->cell;
Structure* structure = cell->structure(m_environment.vm());
if (!structure) {
errorString = ASCIILiteral("Unable to get object details");
return;
}
JSGlobalObject* globalObject = structure->globalObject();
if (!globalObject) {
errorString = ASCIILiteral("Unable to get object details");
return;
}
InjectedScript injectedScript = m_injectedScriptManager.injectedScriptFor(globalObject->globalExec());
if (injectedScript.hasNoValue()) {
errorString = ASCIILiteral("Unable to get object details - InjectedScript");
return;
}
String objectGroup = optionalObjectGroup ? *optionalObjectGroup : String();
result = injectedScript.wrapObject(cell, objectGroup, true);
}
EncodedJSValue JSC_HOST_CALL IntlNumberFormatPrototypeGetterFormat(ExecState* state)
{
// 11.3.3 Intl.NumberFormat.prototype.format (ECMA-402 2.0)
// 1. Let nf be this NumberFormat object.
IntlNumberFormat* nf = jsDynamicCast<IntlNumberFormat*>(state->thisValue());
// FIXME: Workaround to provide compatibility with ECMA-402 1.0 call/apply patterns.
if (!nf)
nf = jsDynamicCast<IntlNumberFormat*>(state->thisValue().get(state, state->vm().propertyNames->intlSubstituteValuePrivateName));
if (!nf)
return JSValue::encode(throwTypeError(state, ASCIILiteral("Intl.NumberFormat.prototype.format called on value that's not an object initialized as a NumberFormat")));
JSBoundFunction* boundFormat = nf->boundFormat();
// 2. If nf.[[boundFormat]] is undefined,
if (!boundFormat) {
VM& vm = state->vm();
JSGlobalObject* globalObject = nf->globalObject();
// a. Let F be a new built-in function object as defined in 11.3.4.
// b. The value of F’s length property is 1.
JSFunction* targetObject = JSFunction::create(vm, globalObject, 1, ASCIILiteral("format"), IntlNumberFormatFuncFormatNumber, NoIntrinsic);
JSArray* boundArgs = JSArray::tryCreateUninitialized(vm, globalObject->arrayStructureForIndexingTypeDuringAllocation(ArrayWithUndecided), 0);
if (!boundArgs)
return JSValue::encode(throwOutOfMemoryError(state));
// c. Let bf be BoundFunctionCreate(F, «this value»).
boundFormat = JSBoundFunction::create(vm, state, globalObject, targetObject, nf, boundArgs, 1, ASCIILiteral("format"));
if (vm.exception())
return JSValue::encode(JSValue());
// d. Set nf.[[boundFormat]] to bf.
nf->setBoundFormat(vm, boundFormat);
}
// 3. Return nf.[[boundFormat]].
return JSValue::encode(boundFormat);
}
ModuleProgramExecutable* ModuleProgramExecutable::create(ExecState* exec, const SourceCode& source)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
ModuleProgramExecutable* executable = new (NotNull, allocateCell<ModuleProgramExecutable>(*exec->heap())) ModuleProgramExecutable(exec, source);
executable->finishCreation(exec->vm());
ParserError error;
DebuggerMode debuggerMode = globalObject->hasInteractiveDebugger() ? DebuggerOn : DebuggerOff;
UnlinkedModuleProgramCodeBlock* unlinkedModuleProgramCode = vm.codeCache()->getUnlinkedModuleProgramCodeBlock(
vm, executable, executable->source(), debuggerMode, error);
if (globalObject->hasDebugger())
globalObject->debugger()->sourceParsed(exec, executable->source().provider(), error.line(), error.message());
if (error.isValid()) {
throwVMError(exec, scope, error.toErrorObject(globalObject, executable->source()));
return nullptr;
}
executable->m_unlinkedModuleProgramCodeBlock.set(exec->vm(), executable, unlinkedModuleProgramCode);
executable->m_moduleEnvironmentSymbolTable.set(exec->vm(), executable, jsCast<SymbolTable*>(unlinkedModuleProgramCode->constantRegister(unlinkedModuleProgramCode->moduleEnvironmentSymbolTableConstantRegisterOffset()).get())->cloneScopePart(exec->vm()));
return executable;
}
// Evaluate some JavaScript code in the scope of this frame.
JSValue DebuggerCallFrame::evaluateWithScopeExtension(const String& script, JSObject* scopeExtensionObject, NakedPtr<Exception>& exception)
{
ASSERT(isValid());
CallFrame* callFrame = m_validMachineFrame;
if (!callFrame)
return jsUndefined();
VM& vm = callFrame->vm();
JSLockHolder lock(vm);
auto catchScope = DECLARE_CATCH_SCOPE(vm);
CodeBlock* codeBlock = nullptr;
if (isTailDeleted())
codeBlock = m_shadowChickenFrame.codeBlock;
else
codeBlock = callFrame->codeBlock();
if (!codeBlock)
return jsUndefined();
DebuggerEvalEnabler evalEnabler(callFrame);
EvalContextType evalContextType;
if (isFunctionParseMode(codeBlock->unlinkedCodeBlock()->parseMode()))
evalContextType = EvalContextType::FunctionEvalContext;
else if (codeBlock->unlinkedCodeBlock()->codeType() == EvalCode)
evalContextType = codeBlock->unlinkedCodeBlock()->evalContextType();
else
evalContextType = EvalContextType::None;
VariableEnvironment variablesUnderTDZ;
JSScope::collectClosureVariablesUnderTDZ(scope()->jsScope(), variablesUnderTDZ);
EvalExecutable* eval = DirectEvalExecutable::create(callFrame, makeSource(script), codeBlock->isStrictMode(), codeBlock->unlinkedCodeBlock()->derivedContextType(), codeBlock->unlinkedCodeBlock()->isArrowFunction(), evalContextType, &variablesUnderTDZ);
if (UNLIKELY(catchScope.exception())) {
exception = catchScope.exception();
catchScope.clearException();
return jsUndefined();
}
JSGlobalObject* globalObject = callFrame->vmEntryGlobalObject();
if (scopeExtensionObject) {
JSScope* ignoredPreviousScope = globalObject->globalScope();
globalObject->setGlobalScopeExtension(JSWithScope::create(vm, globalObject, scopeExtensionObject, ignoredPreviousScope));
}
JSValue thisValue = this->thisValue();
JSValue result = vm.interpreter->execute(eval, callFrame, thisValue, scope()->jsScope());
if (UNLIKELY(catchScope.exception())) {
exception = catchScope.exception();
catchScope.clearException();
}
if (scopeExtensionObject)
globalObject->clearGlobalScopeExtension();
ASSERT(result);
return result;
}
JSJSGlobalObject::JSJSGlobalObject() {
JSGlobalObject *pthis = (static_cast<JSGlobalObject *>(this));
pthis->js_addInterface(JS_JSGlobalObject_GUID, pthis);
pthis->js_addClassDescriptor(&JSJSGlobalObject::classDescriptor);
pthis->js_addFunctionTable(JSJSGlobalObject::functionTable);
jsSink = new JSJSGlobalObjectEventSink(this);
jsSink->eventSink_registerTo(pthis);
}
ExecState* NPRuntimeObjectMap::globalExec() const
{
JSGlobalObject* globalObject = this->globalObject();
if (!globalObject)
return 0;
return globalObject->globalExec();
}
static EncodedJSValue JSC_HOST_CALL constructWithStringConstructor(ExecState* exec)
{
JSGlobalObject* globalObject = asInternalFunction(exec->callee())->globalObject();
if (!exec->argumentCount())
return JSValue::encode(StringObject::create(exec, globalObject->stringObjectStructure()));
return JSValue::encode(StringObject::create(exec, globalObject->stringObjectStructure(), exec->argument(0).toString(exec)));
}
static EncodedJSValue JSC_HOST_CALL constructWeakSet(ExecState* exec)
{
JSGlobalObject* globalObject = asInternalFunction(exec->callee())->globalObject();
Structure* weakSetStructure = globalObject->weakSetStructure();
JSWeakSet* weakSet = JSWeakSet::create(exec, weakSetStructure);
JSValue iterable = exec->argument(0);
if (iterable.isUndefinedOrNull())
return JSValue::encode(weakSet);
JSValue adderFunction = weakSet->JSObject::get(exec, exec->propertyNames().add);
if (exec->hadException())
return JSValue::encode(jsUndefined());
CallData adderFunctionCallData;
CallType adderFunctionCallType = getCallData(adderFunction, adderFunctionCallData);
if (adderFunctionCallType == CallTypeNone)
return JSValue::encode(throwTypeError(exec));
JSValue iteratorFunction = iterable.get(exec, exec->propertyNames().iteratorSymbol);
if (exec->hadException())
return JSValue::encode(jsUndefined());
CallData iteratorFunctionCallData;
CallType iteratorFunctionCallType = getCallData(iteratorFunction, iteratorFunctionCallData);
if (iteratorFunctionCallType == CallTypeNone)
return JSValue::encode(throwTypeError(exec));
ArgList iteratorFunctionArguments;
JSValue iterator = call(exec, iteratorFunction, iteratorFunctionCallType, iteratorFunctionCallData, iterable, iteratorFunctionArguments);
if (exec->hadException())
return JSValue::encode(jsUndefined());
if (!iterator.isObject())
return JSValue::encode(throwTypeError(exec));
while (true) {
JSValue next = iteratorStep(exec, iterator);
if (exec->hadException())
return JSValue::encode(jsUndefined());
if (next.isFalse())
return JSValue::encode(weakSet);
JSValue nextValue = iteratorValue(exec, next);
if (exec->hadException())
return JSValue::encode(jsUndefined());
MarkedArgumentBuffer arguments;
arguments.append(nextValue);
call(exec, adderFunction, adderFunctionCallType, adderFunctionCallData, weakSet, arguments);
if (exec->hadException()) {
iteratorClose(exec, iterator);
return JSValue::encode(jsUndefined());
}
}
RELEASE_ASSERT_NOT_REACHED();
return JSValue::encode(weakSet);
}
JSValue linkAndEvaluateModule(ExecState* exec, const Identifier& moduleKey, JSValue scriptFetcher)
{
JSLockHolder lock(exec);
RELEASE_ASSERT(exec->vm().atomicStringTable() == wtfThreadData().atomicStringTable());
RELEASE_ASSERT(!exec->vm().isCollectorBusyOnCurrentThread());
JSGlobalObject* globalObject = exec->vmEntryGlobalObject();
return globalObject->moduleLoader()->linkAndEvaluateModule(exec, identifierToJSValue(exec->vm(), moduleKey), scriptFetcher);
}
JSInternalPromise* linkAndEvaluateModule(ExecState* exec, const Identifier& moduleKey)
{
JSLockHolder lock(exec);
RELEASE_ASSERT(exec->vm().atomicStringTable() == wtfThreadData().atomicStringTable());
RELEASE_ASSERT(!exec->vm().isCollectorBusy());
JSGlobalObject* globalObject = exec->vmEntryGlobalObject();
return globalObject->moduleLoader()->linkAndEvaluateModule(exec, identifierToJSValue(exec->vm(), moduleKey));
}
static ALWAYS_INLINE JSObject* constructObject(ExecState* exec)
{
JSGlobalObject* globalObject = exec->callee()->globalObject();
ArgList args(exec);
JSValue arg = args.at(0);
if (arg.isUndefinedOrNull())
return constructEmptyObject(exec, globalObject->objectPrototype());
return arg.toObject(exec, globalObject);
}