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/*
* Copyright (C) 2009, 2010 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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.
*/
#ifndef SerializedScriptValue_h
#define SerializedScriptValue_h
#include "ScriptValue.h"
#include <v8.h>
#include <wtf/ArrayBuffer.h>
#include <wtf/Threading.h>
namespace WebCore {
class MessagePort;
typedef Vector<RefPtr<MessagePort>, 1> MessagePortArray;
typedef Vector<RefPtr<WTF::ArrayBuffer>, 1> ArrayBufferArray;
class SerializedScriptValue : public ThreadSafeRefCounted<SerializedScriptValue> {
public:
virtual ~SerializedScriptValue();
// If a serialization error occurs (e.g., cyclic input value) this
// function returns an empty representation, schedules a V8 exception to
// be thrown using v8::ThrowException(), and sets |didThrow|. In this case
// the caller must not invoke any V8 operations until control returns to
// V8. When serialization is successful, |didThrow| is false.
static PassRefPtr<SerializedScriptValue> create(v8::Handle<v8::Value>,
MessagePortArray*, ArrayBufferArray*,
bool& didThrow, v8::Isolate* = 0);
static PassRefPtr<SerializedScriptValue> create(v8::Handle<v8::Value>, v8::Isolate* = 0);
static PassRefPtr<SerializedScriptValue> createFromWire(const String& data);
static PassRefPtr<SerializedScriptValue> create(const String& data, v8::Isolate* = 0);
static PassRefPtr<SerializedScriptValue> create();
static PassRefPtr<SerializedScriptValue> nullValue(v8::Isolate* = 0);
static PassRefPtr<SerializedScriptValue> undefinedValue(v8::Isolate* = 0);
static PassRefPtr<SerializedScriptValue> booleanValue(bool value, v8::Isolate* = 0);
static PassRefPtr<SerializedScriptValue> numberValue(double value, v8::Isolate* = 0);
PassRefPtr<SerializedScriptValue> release();
String toWireString() const { return m_data; }
// Deserializes the value (in the current context). Returns a null value in
// case of failure.
v8::Handle<v8::Value> deserialize(MessagePortArray* = 0, v8::Isolate* = 0);
#if ENABLE(INSPECTOR)
ScriptValue deserializeForInspector(ScriptState*, v8::Isolate* = 0);
#endif
const Vector<String>& blobURLs() const { return m_blobURLs; }
// Informs the V8 about external memory allocated and owned by this object. Large values should contribute
// to GC counters to eventually trigger a GC, otherwise flood of postMessage() can cause OOM.
// Ok to invoke multiple times (only adds memory once).
// The memory registration is revoked automatically in destructor.
void registerMemoryAllocatedWithCurrentScriptContext();
private:
enum StringDataMode {
StringValue,
WireData
};
typedef Vector<WTF::ArrayBufferContents, 1> ArrayBufferContentsArray;
SerializedScriptValue();
SerializedScriptValue(v8::Handle<v8::Value>, MessagePortArray*, ArrayBufferArray*, bool& didThrow, v8::Isolate*);
explicit SerializedScriptValue(const String& wireData);
static PassOwnPtr<ArrayBufferContentsArray> transferArrayBuffers(ArrayBufferArray&, bool& didThrow, v8::Isolate*);
String m_data;
OwnPtr<ArrayBufferContentsArray> m_arrayBufferContentsArray;
Vector<String> m_blobURLs;
intptr_t m_externallyAllocatedMemory;
};
} // namespace WebCore
#endif // SerializedScriptValue_h
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