ReadableStreamDefaultController.h [plain text]
#pragma once
#if ENABLE(READABLE_STREAM_API)
#include "JSDOMBinding.h"
#include "JSReadableStreamDefaultController.h"
#include <runtime/JSCJSValue.h>
#include <runtime/JSCJSValueInlines.h>
#include <runtime/TypedArrays.h>
namespace WebCore {
class ReadableStreamSource;
class ReadableStreamDefaultController {
public:
explicit ReadableStreamDefaultController(JSReadableStreamDefaultController* controller) : m_jsController(controller) { }
static JSC::JSValue invoke(JSC::ExecState&, JSC::JSObject&, const char*, JSC::JSValue);
bool enqueue(RefPtr<JSC::ArrayBuffer>&&);
template<class ResolveResultType>
void error(const ResolveResultType&);
void close() { invoke(*globalObject().globalExec(), jsController(), "close", JSC::jsUndefined()); }
bool isControlledReadableStreamLocked() const;
private:
void error(JSC::ExecState& state, JSC::JSValue value) { invoke(state, jsController(), "error", value); }
void enqueue(JSC::ExecState& state, JSC::JSValue value) { invoke(state, jsController(), "enqueue", value); }
JSReadableStreamDefaultController& jsController() const;
JSDOMGlobalObject& globalObject() const;
JSC::ExecState& globalExec() const;
JSReadableStreamDefaultController* m_jsController { nullptr };
};
inline JSReadableStreamDefaultController& ReadableStreamDefaultController::jsController() const
{
ASSERT(m_jsController);
return *m_jsController;
}
inline JSDOMGlobalObject& ReadableStreamDefaultController::globalObject() const
{
ASSERT(m_jsController);
ASSERT(m_jsController->globalObject());
return *static_cast<JSDOMGlobalObject*>(m_jsController->globalObject());
}
inline JSC::ExecState& ReadableStreamDefaultController::globalExec() const
{
ASSERT(globalObject().globalExec());
return *globalObject().globalExec();
}
inline bool ReadableStreamDefaultController::enqueue(RefPtr<JSC::ArrayBuffer>&& buffer)
{
auto& globalObject = this->globalObject();
JSC::VM& vm = globalObject.vm();
JSC::JSLockHolder locker(vm);
auto scope = DECLARE_THROW_SCOPE(vm);
JSC::ExecState& state = globalExec();
if (!buffer) {
error(state, createOutOfMemoryError(&state));
return false;
}
auto length = buffer->byteLength();
auto chunk = JSC::Uint8Array::create(WTFMove(buffer), 0, length);
ASSERT(chunk);
enqueue(state, toJS(&state, &globalObject, chunk.get()));
ASSERT_UNUSED(scope, !scope.exception());
return true;
}
template<>
inline void ReadableStreamDefaultController::error<String>(const String& errorMessage)
{
JSC::ExecState& state = globalExec();
JSC::JSLockHolder locker(&state);
error(state, JSC::createTypeError(&state, errorMessage));
}
}
#endif // ENABLE(READABLE_STREAM_API)