#ifndef JSCallbackData_h
#define JSCallbackData_h
#include "JSDOMBinding.h"
#include "JSDOMGlobalObject.h"
#include "ScriptExecutionContext.h"
#include <heap/Strong.h>
#include <heap/StrongInlines.h>
#include <runtime/JSObject.h>
#include <wtf/Threading.h>
namespace WebCore {
class JSCallbackData {
public:
enum class CallbackType { Function, Object, FunctionOrObject };
protected:
JSCallbackData()
#ifndef NDEBUG
: m_thread(currentThread())
#endif
{
}
~JSCallbackData()
{
#if !PLATFORM(IOS)
ASSERT(m_thread == currentThread());
#endif
}
static JSC::JSValue invokeCallback(JSC::JSObject* callback, JSC::MarkedArgumentBuffer&, CallbackType, JSC::PropertyName functionName, NakedPtr<JSC::Exception>& returnedException);
private:
#ifndef NDEBUG
ThreadIdentifier m_thread;
#endif
};
class JSCallbackDataStrong : public JSCallbackData {
public:
JSCallbackDataStrong(JSC::JSObject* callback, void*)
: m_callback(callback->globalObject()->vm(), callback)
{
}
JSC::JSObject* callback() { return m_callback.get(); }
JSDOMGlobalObject* globalObject() { return JSC::jsCast<JSDOMGlobalObject*>(m_callback->globalObject()); }
JSC::JSValue invokeCallback(JSC::MarkedArgumentBuffer& args, CallbackType callbackType, JSC::PropertyName functionName, NakedPtr<JSC::Exception>& returnedException)
{
return JSCallbackData::invokeCallback(callback(), args, callbackType, functionName, returnedException);
}
private:
JSC::Strong<JSC::JSObject> m_callback;
};
class JSCallbackDataWeak : public JSCallbackData {
public:
JSCallbackDataWeak(JSC::JSObject* callback, void* owner)
: m_callback(callback, &m_weakOwner, owner)
{
}
JSC::JSObject* callback() { return m_callback.get(); }
JSDOMGlobalObject* globalObject() { return JSC::jsCast<JSDOMGlobalObject*>(m_callback->globalObject()); }
JSC::JSValue invokeCallback(JSC::MarkedArgumentBuffer& args, CallbackType callbackType, JSC::PropertyName functionName, NakedPtr<JSC::Exception>& returnedException)
{
return JSCallbackData::invokeCallback(callback(), args, callbackType, functionName, returnedException);
}
private:
class WeakOwner : public JSC::WeakHandleOwner {
virtual bool isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown>, void* context, JSC::SlotVisitor&);
};
WeakOwner m_weakOwner;
JSC::Weak<JSC::JSObject> m_callback;
};
class DeleteCallbackDataTask : public ScriptExecutionContext::Task {
public:
template <typename CallbackDataType>
explicit DeleteCallbackDataTask(CallbackDataType* data)
: ScriptExecutionContext::Task(ScriptExecutionContext::Task::CleanupTask, [data = std::unique_ptr<CallbackDataType>(data)] (ScriptExecutionContext&) {
})
{
}
};
}
#endif // JSCallbackData_h