1 files changed, 85 insertions, 0 deletions
diff --git a/Source/WebCore/bindings/js/JSReadableStreamSourceCustom.cpp b/Source/WebCore/bindings/js/JSReadableStreamSourceCustom.cpp
new file mode 100644
index 000000000..5cf0a8478
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+++ b/Source/WebCore/bindings/js/JSReadableStreamSourceCustom.cpp
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+/*
+ * Copyright (C) 2016 Canon Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted, provided that the following conditions
+ * are required to be 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.
+ * 3.  Neither the name of Canon Inc. nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY CANON 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 CANON INC. AND 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 "JSReadableStreamSource.h"
+
+#if ENABLE(READABLE_STREAM_API)
+
+using namespace JSC;
+
+namespace WebCore {
+
+static void startReadableStream(JSC::ExecState& state, Ref<DeferredPromise>&& promise)
+{
+    VM& vm = state.vm();
+    JSReadableStreamSource* source = jsDynamicDowncast<JSReadableStreamSource*>(vm, state.thisValue());
+    ASSERT(source);
+
+    ASSERT(state.argumentCount());
+    JSReadableStreamDefaultController* controller = jsDynamicDowncast<JSReadableStreamDefaultController*>(vm, state.uncheckedArgument(0));
+    ASSERT(controller);
+
+    source->wrapped().start(ReadableStreamDefaultController(controller), WTFMove(promise));
+}
+
+JSValue JSReadableStreamSource::start(ExecState& state)
+{
+    VM& vm = state.vm();
+    ASSERT(state.argumentCount());
+    JSReadableStreamDefaultController* controller = jsDynamicDowncast<JSReadableStreamDefaultController*>(vm, state.uncheckedArgument(0));
+    ASSERT(controller);
+
+    m_controller.set(vm, this, controller);
+
+    return callPromiseFunction<startReadableStream, PromiseExecutionScope::WindowOrWorker>(state);
+}
+
+static void pullReadableStream(JSC::ExecState& state, Ref<DeferredPromise>&& promise)
+{
+    VM& vm = state.vm();
+    JSReadableStreamSource* source = jsDynamicDowncast<JSReadableStreamSource*>(vm, state.thisValue());
+    ASSERT(source);
+
+    source->wrapped().pull(WTFMove(promise));
+}
+
+JSValue JSReadableStreamSource::pull(ExecState& state)
+{
+    return callPromiseFunction<pullReadableStream, PromiseExecutionScope::WindowOrWorker>(state);
+}
+
+JSValue JSReadableStreamSource::controller(ExecState&) const
+{
+    ASSERT_NOT_REACHED();
+    return jsUndefined();
+}
+
+}
+
+#endif // ENABLE(READABLE_STREAM_API)