bool JSCheckScriptSyntax(JSContextRef ctx, JSStringRef script, JSStringRef sourceURL, int startingLineNumber, JSValueRef* exception)
{
ExecState* exec = toJS(ctx);
exec->globalData().heap.registerThread();
JSLock lock(exec);
SourceCode source = makeSource(script->ustring(), sourceURL->ustring(), startingLineNumber);
Completion completion = checkSyntax(exec->dynamicGlobalObject()->globalExec(), source);
if (completion.complType() == Throw) {
if (exception)
*exception = toRef(completion.value());
return false;
}
return true;
}
bool JSObjectDeletePrivateProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName)
{
ExecState* exec = toJS(ctx);
APIEntryShim entryShim(exec);
JSObject* jsObject = toJS(object);
Identifier name(propertyName->identifier(&exec->globalData()));
if (jsObject->inherits(&JSCallbackObject<JSGlobalObject>::s_info)) {
static_cast<JSCallbackObject<JSGlobalObject>*>(jsObject)->deletePrivateProperty(name);
return true;
}
if (jsObject->inherits(&JSCallbackObject<JSNonFinalObject>::s_info)) {
static_cast<JSCallbackObject<JSNonFinalObject>*>(jsObject)->deletePrivateProperty(name);
return true;
}
return false;
}
void JSGlobalContextRelease(JSGlobalContextRef ctx)
{
ExecState* exec = toJS(ctx);
APIEntryShim entryShim(exec);
gcUnprotect(exec->dynamicGlobalObject());
JSGlobalData& globalData = exec->globalData();
if (globalData.refCount() == 2) { // One reference is held by JSGlobalObject, another added by JSGlobalContextRetain().
// The last reference was released, this is our last chance to collect.
globalData.heap.destroy();
} else
globalData.heap.collectAllGarbage();
globalData.deref();
}
void JSObjectSetPropertyAtIndex(JSContextRef ctx, JSObjectRef object, unsigned propertyIndex, JSValueRef value, JSValueRef* exception)
{
ExecState* exec = toJS(ctx);
exec->globalData().heap.registerThread();
JSLock lock(exec);
JSObject* jsObject = toJS(object);
JSValuePtr jsValue = toJS(value);
jsObject->put(exec, propertyIndex, jsValue);
if (exec->hadException()) {
if (exception)
*exception = toRef(exec->exception());
exec->clearException();
}
}
JSValueRef JSObjectGetPrivateProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName)
{
ExecState* exec = toJS(ctx);
APIEntryShim entryShim(exec);
JSObject* jsObject = toJS(object);
JSValue result;
Identifier name(propertyName->identifier(&exec->globalData()));
if (jsObject->inherits(&JSCallbackObject<JSGlobalObject>::s_info))
result = jsCast<JSCallbackObject<JSGlobalObject>*>(jsObject)->getPrivateProperty(name);
else if (jsObject->inherits(&JSCallbackObject<JSDestructibleObject>::s_info))
result = jsCast<JSCallbackObject<JSDestructibleObject>*>(jsObject)->getPrivateProperty(name);
#if JSC_OBJC_API_ENABLED
else if (jsObject->inherits(&JSCallbackObject<JSAPIWrapperObject>::s_info))
result = jsCast<JSCallbackObject<JSAPIWrapperObject>*>(jsObject)->getPrivateProperty(name);
#endif
return toRef(exec, result);
}
JSValueRef JSValueMakeNumber(JSContextRef ctx, double value)
{
ExecState* exec = toJS(ctx);
exec->globalData().heap.registerThread();
JSLock lock(exec);
#if 1
// added at webkit.org trunk r64706
// Our JSValue representation relies on a standard bit pattern for NaN. NaNs
// generated internally to JavaScriptCore naturally have that representation,
// but an external NaN might not.
if (isnan(value))
value = NaN;
#endif
return toRef(exec, jsNumber(exec, value));
}
JSObjectRef JSValueToObject(JSContextRef ctx, JSValueRef value, JSValueRef* exception)
{
ExecState* exec = toJS(ctx);
exec->globalData().heap.registerThread();
JSLock lock(exec);
JSValuePtr jsValue = toJS(value);
JSObjectRef objectRef = toRef(jsValue.toObject(exec));
if (exec->hadException()) {
if (exception)
*exception = toRef(exec->exception());
exec->clearException();
objectRef = 0;
}
return objectRef;
}
double JSValueToNumber(JSContextRef ctx, JSValueRef value, JSValueRef* exception)
{
ExecState* exec = toJS(ctx);
exec->globalData().heap.registerThread();
JSLock lock(exec);
JSValuePtr jsValue = toJS(value);
double number = jsValue.toNumber(exec);
if (exec->hadException()) {
if (exception)
*exception = toRef(exec->exception());
exec->clearException();
number = NaN;
}
return number;
}
bool JSValueIsEqual(JSContextRef ctx, JSValueRef a, JSValueRef b, JSValueRef* exception)
{
ExecState* exec = toJS(ctx);
exec->globalData().heap.registerThread();
JSLock lock(exec);
JSValuePtr jsA = toJS(a);
JSValuePtr jsB = toJS(b);
bool result = JSValuePtr::equal(exec, jsA, jsB); // false if an exception is thrown
if (exec->hadException()) {
if (exception)
*exception = toRef(exec->exception());
exec->clearException();
}
return result;
}
JSStringRef JSValueToStringCopy(JSContextRef ctx, JSValueRef value, JSValueRef* exception)
{
ExecState* exec = toJS(ctx);
exec->globalData().heap.registerThread();
JSLock lock(exec);
JSValuePtr jsValue = toJS(value);
RefPtr<OpaqueJSString> stringRef(OpaqueJSString::create(jsValue.toString(exec)));
if (exec->hadException()) {
if (exception)
*exception = toRef(exec->exception());
exec->clearException();
stringRef.clear();
}
return stringRef.release().releaseRef();
}
bool OAGlobalObject::garbageCollection()
{
AJOAGlobalObject *globalObject = wrapper();
if (globalObject) {
ExecState *exec = globalObject->globalExec();
s_explicit_gc = true;
AJLock lock(exec);
AJGlobalData& globalData = exec->globalData();
if (!globalData.heap.isBusy()) {
globalData.heap.collectAllGarbage();
s_explicit_gc = false;
return true;
}
}
return false;
}
bool JSValueIsInstanceOfConstructor(JSContextRef ctx, JSValueRef value, JSObjectRef constructor, JSValueRef* exception)
{
ExecState* exec = toJS(ctx);
exec->globalData().heap.registerThread();
JSLock lock(exec);
JSValuePtr jsValue = toJS(value);
JSObject* jsConstructor = toJS(constructor);
if (!jsConstructor->structure()->typeInfo().implementsHasInstance())
return false;
bool result = jsConstructor->hasInstance(exec, jsValue, jsConstructor->get(exec, exec->propertyNames().prototype)); // false if an exception is thrown
if (exec->hadException()) {
if (exception)
*exception = toRef(exec->exception());
exec->clearException();
}
return result;
}
void JSGlobalContextRelease(JSGlobalContextRef ctx)
{
ExecState* exec = toJS(ctx);
JSLock lock(exec);
gcUnprotect(exec->dynamicGlobalObject());
JSGlobalData& globalData = exec->globalData();
if (globalData.refCount() == 2) { // One reference is held by JSGlobalObject, another added by JSGlobalContextRetain().
// The last reference was released, this is our last chance to collect.
ASSERT(!globalData.heap.protectedObjectCount());
ASSERT(!globalData.heap.isBusy());
globalData.heap.destroy();
} else
globalData.heap.collect();
globalData.deref();
}
void JSGlobalContextRelease(JSGlobalContextRef ctx)
{
IdentifierTable* savedIdentifierTable;
ExecState* exec = toJS(ctx);
{
JSLockHolder lock(exec);
JSGlobalData& globalData = exec->globalData();
savedIdentifierTable = wtfThreadData().setCurrentIdentifierTable(globalData.identifierTable);
bool protectCountIsZero = Heap::heap(exec->dynamicGlobalObject())->unprotect(exec->dynamicGlobalObject());
if (protectCountIsZero)
globalData.heap.reportAbandonedObjectGraph();
globalData.deref();
}
wtfThreadData().setCurrentIdentifierTable(savedIdentifierTable);
}
JSPropertyNameArrayRef JSObjectCopyPropertyNames(JSContextRef ctx, JSObjectRef object)
{
JSObject* jsObject = toJS(object);
ExecState* exec = toJS(ctx);
APIEntryShim entryShim(exec);
JSGlobalData* globalData = &exec->globalData();
JSPropertyNameArrayRef propertyNames = new OpaqueJSPropertyNameArray(globalData);
PropertyNameArray array(globalData);
jsObject->methodTable()->getPropertyNames(jsObject, exec, array, ExcludeDontEnumProperties);
size_t size = array.size();
propertyNames->array.reserveInitialCapacity(size);
for (size_t i = 0; i < size; ++i)
propertyNames->array.append(JSRetainPtr<JSStringRef>(Adopt, OpaqueJSString::create(array[i].ustring()).leakRef()));
return JSPropertyNameArrayRetain(propertyNames);
}
JSObjectRef JSObjectMakeRegExp(JSContextRef ctx, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
{
ExecState* exec = toJS(ctx);
exec->globalData().heap.registerThread();
JSLock lock(exec);
ArgList argList;
for (size_t i = 0; i < argumentCount; ++i)
argList.append(toJS(arguments[i]));
JSObject* result = constructRegExp(exec, argList);
if (exec->hadException()) {
if (exception)
*exception = toRef(exec->exception());
exec->clearException();
result = 0;
}
return toRef(result);
}
JSObjectRef JSObjectMakeFunction(JSContextRef ctx, JSStringRef name, unsigned parameterCount, const JSStringRef parameterNames[], JSStringRef body, JSStringRef sourceURL, int startingLineNumber, JSValueRef* exception)
{
ExecState* exec = toJS(ctx);
APIEntryShim entryShim(exec);
Identifier nameID = name ? name->identifier(&exec->globalData()) : Identifier(exec, "anonymous");
MarkedArgumentBuffer args;
for (unsigned i = 0; i < parameterCount; i++)
args.append(jsString(exec, parameterNames[i]->ustring()));
args.append(jsString(exec, body->ustring()));
JSObject* result = constructFunction(exec, exec->lexicalGlobalObject(), args, nameID, sourceURL->ustring(), TextPosition(OrdinalNumber::fromOneBasedInt(startingLineNumber), OrdinalNumber::first()));
if (exec->hadException()) {
if (exception)
*exception = toRef(exec, exec->exception());
exec->clearException();
result = 0;
}
return toRef(result);
}
inline void* virtualFor(ExecState* execCallee, CodeSpecializationKind kind)
{
ExecState* exec = execCallee->callerFrame();
JSValue calleeAsValue = execCallee->calleeAsValue();
JSCell* calleeAsFunctionCell = getJSFunction(calleeAsValue);
if (UNLIKELY(!calleeAsFunctionCell))
return handleHostCall(execCallee, calleeAsValue, kind);
JSFunction* function = asFunction(calleeAsFunctionCell);
execCallee->setScopeChain(function->scopeUnchecked());
ExecutableBase* executable = function->executable();
if (UNLIKELY(!executable->hasJITCodeFor(kind))) {
FunctionExecutable* functionExecutable = static_cast<FunctionExecutable*>(executable);
JSObject* error = functionExecutable->compileFor(execCallee, function->scope(), kind);
if (error) {
exec->globalData().exception = error;
return 0;
}
}
return executable->generatedJITCodeWithArityCheckFor(kind).executableAddress();
}
bool JSObjectDeletePrivateProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName)
{
ExecState* exec = toJS(ctx);
APIEntryShim entryShim(exec);
JSObject* jsObject = toJS(object);
Identifier name(propertyName->identifier(&exec->globalData()));
if (jsObject->inherits(&JSCallbackObject<JSGlobalObject>::s_info)) {
jsCast<JSCallbackObject<JSGlobalObject>*>(jsObject)->deletePrivateProperty(name);
return true;
}
if (jsObject->inherits(&JSCallbackObject<JSDestructibleObject>::s_info)) {
jsCast<JSCallbackObject<JSDestructibleObject>*>(jsObject)->deletePrivateProperty(name);
return true;
}
#if JSC_OBJC_API_ENABLED
if (jsObject->inherits(&JSCallbackObject<JSAPIWrapperObject>::s_info)) {
jsCast<JSCallbackObject<JSAPIWrapperObject>*>(jsObject)->deletePrivateProperty(name);
return true;
}
#endif
return false;
}
void JSObjectSetProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef value, JSPropertyAttributes attributes, JSValueRef* exception)
{
ExecState* exec = toJS(ctx);
APIEntryShim entryShim(exec);
JSObject* jsObject = toJS(object);
Identifier name(propertyName->identifier(&exec->globalData()));
JSValue jsValue = toJS(exec, value);
if (attributes && !jsObject->hasProperty(exec, name))
jsObject->methodTable()->putDirectVirtual(jsObject, exec, name, jsValue, attributes);
else {
PutPropertySlot slot;
jsObject->methodTable()->put(jsObject, exec, name, jsValue, slot);
}
if (exec->hadException()) {
if (exception)
*exception = toRef(exec, exec->exception());
exec->clearException();
}
}
inline void* linkFor(ExecState* execCallee, ReturnAddressPtr returnAddress, CodeSpecializationKind kind)
{
ExecState* exec = execCallee->callerFrame();
JSGlobalData* globalData = &exec->globalData();
NativeCallFrameTracer tracer(globalData, exec);
JSValue calleeAsValue = execCallee->calleeAsValue();
JSCell* calleeAsFunctionCell = getJSFunction(calleeAsValue);
if (!calleeAsFunctionCell)
return handleHostCall(execCallee, calleeAsValue, kind);
JSFunction* callee = jsCast<JSFunction*>(calleeAsFunctionCell);
execCallee->setScopeChain(callee->scopeUnchecked());
ExecutableBase* executable = callee->executable();
MacroAssemblerCodePtr codePtr;
CodeBlock* codeBlock = 0;
if (executable->isHostFunction())
codePtr = executable->generatedJITCodeFor(kind).addressForCall();
else {
FunctionExecutable* functionExecutable = static_cast<FunctionExecutable*>(executable);
JSObject* error = functionExecutable->compileFor(execCallee, callee->scope(), kind);
if (error) {
globalData->exception = createStackOverflowError(exec);
return 0;
}
codeBlock = &functionExecutable->generatedBytecodeFor(kind);
if (execCallee->argumentCountIncludingThis() < static_cast<size_t>(codeBlock->numParameters()))
codePtr = functionExecutable->generatedJITCodeWithArityCheckFor(kind);
else
codePtr = functionExecutable->generatedJITCodeFor(kind).addressForCall();
}
CallLinkInfo& callLinkInfo = exec->codeBlock()->getCallLinkInfo(returnAddress);
if (!callLinkInfo.seenOnce())
callLinkInfo.setSeen();
else
dfgLinkFor(execCallee, callLinkInfo, codeBlock, callee, codePtr, kind);
return codePtr.executableAddress();
}
void JSGarbageCollect(JSContextRef ctx)
{
// We used to recommend passing NULL as an argument here, which caused the only heap to be collected.
// As there is no longer a shared heap, the previously recommended usage became a no-op (but the GC
// will happen when the context group is destroyed).
// Because the function argument was originally ignored, some clients may pass their released context here,
// in which case there is a risk of crashing if another thread performs GC on the same heap in between.
if (!ctx)
return;
ExecState* exec = toJS(ctx);
JSGlobalData& globalData = exec->globalData();
JSLock lock(globalData.isSharedInstance);
if (!globalData.heap.isBusy())
globalData.heap.collect();
// FIXME: Perhaps we should trigger a second mark and sweep
// once the garbage collector is done if this is called when
// the collector is busy.
}
JSObjectRef JSObjectMakeFunction(JSContextRef ctx, JSStringRef name, unsigned parameterCount, const JSStringRef parameterNames[], JSStringRef body, JSStringRef sourceURL, int startingLineNumber, JSValueRef* exception)
{
ExecState* exec = toJS(ctx);
exec->globalData().heap->registerThread();
JSLock lock(exec);
Identifier nameID = name ? name->identifier(exec) : Identifier(exec, "anonymous");
ArgList args;
for (unsigned i = 0; i < parameterCount; i++)
args.append(jsString(exec, parameterNames[i]->ustring()));
args.append(jsString(exec, body->ustring()));
JSObject* result = constructFunction(exec, args, nameID, sourceURL->ustring(), startingLineNumber);
if (exec->hadException()) {
if (exception)
*exception = toRef(exec->exception());
exec->clearException();
result = 0;
}
return toRef(result);
}
void JSObjectSetProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef value, JSPropertyAttributes attributes, JSValueRef* exception)
{
ExecState* exec = toJS(ctx);
exec->globalData().heap->registerThread();
JSLock lock(exec);
JSObject* jsObject = toJS(object);
Identifier name(propertyName->identifier(exec));
JSValue* jsValue = toJS(value);
if (attributes && !jsObject->hasProperty(exec, name))
jsObject->putWithAttributes(exec, name, jsValue, attributes);
else {
PutPropertySlot slot;
jsObject->put(exec, name, jsValue, slot);
}
if (exec->hadException()) {
if (exception)
*exception = toRef(exec->exception());
exec->clearException();
}
}
void JSGlobalContextRelease(JSGlobalContextRef ctx)
{
ExecState* exec = toJS(ctx);
JSLock lock(exec);
JSGlobalData& globalData = exec->globalData();
JSGlobalObject* dgo = exec->dynamicGlobalObject();
IdentifierTable* savedIdentifierTable = wtfThreadData().setCurrentIdentifierTable(globalData.identifierTable);
// One reference is held by JSGlobalObject, another added by JSGlobalContextRetain().
bool releasingContextGroup = globalData.refCount() == 2;
bool releasingGlobalObject = Heap::heap(dgo)->unprotect(dgo);
// If this is the last reference to a global data, it should also
// be the only remaining reference to the global object too!
ASSERT(!releasingContextGroup || releasingGlobalObject);
// An API 'JSGlobalContextRef' retains two things - a global object and a
// global data (or context group, in API terminology).
// * If this is the last reference to any contexts in the given context group,
// call destroy on the heap (the global data is being freed).
// * If this was the last reference to the global object, then unprotecting
// it may release a lot of GC memory - tickle the activity callback to
// garbage collect soon.
// * If there are more references remaining the the global object, then do nothing
// (specifically that is more protects, which we assume come from other JSGlobalContextRefs).
if (releasingContextGroup) {
globalData.clearBuiltinStructures();
globalData.heap.destroy();
} else if (releasingGlobalObject) {
globalData.heap.activityCallback()->synchronize();
(*globalData.heap.activityCallback())();
}
globalData.deref();
wtfThreadData().setCurrentIdentifierTable(savedIdentifierTable);
}
ScriptValue idbKeyToScriptValue(DOMRequestState* requestState, PassRefPtr<IDBKey> key)
{
ExecState* exec = requestState->exec();
return ScriptValue(exec->globalData(), idbKeyToJSValue(exec, jsCast<JSDOMGlobalObject*>(exec->lexicalGlobalObject()), key.get()));
}
JSContextGroupRef JSContextGetGroup(JSContextRef ctx)
{
ExecState* exec = toJS(ctx);
return toRef(&exec->globalData());
}
void JSReportExtraMemoryCost(JSContextRef ctx, size_t size)
{
ExecState* exec = toJS(ctx);
APIEntryShim entryShim(exec);
exec->globalData().heap.reportExtraMemoryCost(size);
}
bool JSObjectDeleteProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef* exception)
{
ExecState* exec = toJS(ctx);
APIEntryShim entryShim(exec);
JSObject* jsObject = toJS(object);
bool result = jsObject->methodTable()->deleteProperty(jsObject, exec, propertyName->identifier(&exec->globalData()));
if (exec->hadException()) {
if (exception)
*exception = toRef(exec, exec->exception());
exec->clearException();
}
return result;
}
void JSDOMWindowBase::updateDocument()
{
ASSERT(m_impl->document());
ExecState* exec = globalExec();
symbolTablePutWithAttributes(exec->globalData(), Identifier(exec, "document"), toJS(exec, this, m_impl->document()), DontDelete | ReadOnly);
}
