Source/WebCore/bindings/js/JSReadableStreamSourceCustom.cpp

/*
 * Copyright (C) 2016 Canon Inc.
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 * modification, are permitted, provided that the following conditions
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 *     from this software without specific prior written permission.
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#include "config.h"
#include "JSReadableStreamSource.h"

#if ENABLE(STREAMS_API)

#include "JSDOMPromiseDeferred.h"

namespace WebCore {
using namespace JSC;

JSValue JSReadableStreamSource::start(JSGlobalObject& lexicalGlobalObject, CallFrame& callFrame, Ref<DeferredPromise>&& promise)
{
    VM& vm = lexicalGlobalObject.vm();
    
    // FIXME: Why is it ok to ASSERT the argument count here?
    ASSERT(callFrame.argumentCount());
    JSReadableStreamDefaultController* controller = jsDynamicCast<JSReadableStreamDefaultController*>(vm, callFrame.uncheckedArgument(0));
    ASSERT(controller);

    m_controller.set(vm, this, controller);

    wrapped().start(ReadableStreamDefaultController(controller), WTFMove(promise));

    return jsUndefined();
}

JSValue JSReadableStreamSource::pull(JSGlobalObject&, CallFrame&, Ref<DeferredPromise>&& promise)
{
    wrapped().pull(WTFMove(promise));
    return jsUndefined();
}

JSValue JSReadableStreamSource::controller(JSGlobalObject&) const
{
    ASSERT_NOT_REACHED();
    return jsUndefined();
}

}

#endif // ENABLE(STREAMS_API)