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/*
* Copyright (C) 2016 Canon Inc.
* 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 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.
*/
#pragma once
#if ENABLE(STREAMS_API)
#include "JSDOMConvertBufferSource.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;
// The owner of ReadableStreamDefaultController is responsible to keep uncollected the JSReadableStreamDefaultController.
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()));
scope.assertNoException();
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));
}
} // namespace WebCore
#endif // ENABLE(STREAMS_API)
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