1 files changed, 102 insertions, 0 deletions
diff --git a/src/javascript/jsc/bindings/webcore/ReadableStreamSource.cpp b/src/javascript/jsc/bindings/webcore/ReadableStreamSource.cpp
new file mode 100644
index 000000000..faa46c03b
--- /dev/null
+++ b/src/javascript/jsc/bindings/webcore/ReadableStreamSource.cpp
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2017 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#include "config.h"
+#include "ReadableStreamSource.h"
+
+namespace WebCore {
+
+ReadableStreamSource::~ReadableStreamSource() = default;
+
+void ReadableStreamSource::start(ReadableStreamDefaultController&& controller, DOMPromiseDeferred<void>&& promise)
+{
+    ASSERT(!m_promise);
+    m_promise = makeUnique<DOMPromiseDeferred<void>>(WTFMove(promise));
+    m_controller = WTFMove(controller);
+
+    setActive();
+    doStart();
+}
+
+void ReadableStreamSource::pull(DOMPromiseDeferred<void>&& promise)
+{
+    ASSERT(!m_promise);
+    ASSERT(m_controller);
+
+    m_promise = makeUnique<DOMPromiseDeferred<void>>(WTFMove(promise));
+
+    setActive();
+    doPull();
+}
+
+void ReadableStreamSource::startFinished()
+{
+    ASSERT(m_promise);
+    m_promise->resolve();
+    m_promise = nullptr;
+    setInactive();
+}
+
+void ReadableStreamSource::pullFinished()
+{
+    ASSERT(m_promise);
+    m_promise->resolve();
+    m_promise = nullptr;
+    setInactive();
+}
+
+void ReadableStreamSource::cancel(JSC::JSValue)
+{
+    clean();
+    doCancel();
+}
+
+void ReadableStreamSource::clean()
+{
+    if (m_promise) {
+        m_promise = nullptr;
+        setInactive();
+    }
+}
+
+void SimpleReadableStreamSource::doCancel()
+{
+    m_isCancelled = true;
+}
+
+void SimpleReadableStreamSource::close()
+{
+    if (!m_isCancelled)
+        controller().close();
+}
+
+void SimpleReadableStreamSource::enqueue(JSC::JSValue value)
+{
+    if (!m_isCancelled)
+        controller().enqueue(value);
+}
+
+} // namespace WebCore