Source/WebCore/bindings/v8/SerializedScriptValue.h

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#ifndef SerializedScriptValue_h
#define SerializedScriptValue_h

#include "ScriptValue.h"
#include <v8.h>
#include <wtf/Threading.h>

namespace WebCore {

class MessagePort;

typedef Vector<RefPtr<MessagePort>, 1> MessagePortArray;

class SerializedScriptValue : public ThreadSafeRefCounted<SerializedScriptValue> {
public:
    static void deserializeAndSetProperty(v8::Handle<v8::Object>, const char* propertyName,
                                          v8::PropertyAttribute, SerializedScriptValue*);
    static void deserializeAndSetProperty(v8::Handle<v8::Object>, const char* propertyName,
                                          v8::PropertyAttribute, PassRefPtr<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*, bool& didThrow);
    static PassRefPtr<SerializedScriptValue> create(v8::Handle<v8::Value>);
    static PassRefPtr<SerializedScriptValue> createFromWire(const String& data);
    static PassRefPtr<SerializedScriptValue> create(const String& data);
    static PassRefPtr<SerializedScriptValue> create();

    static SerializedScriptValue* nullValue();
    static PassRefPtr<SerializedScriptValue> undefinedValue();
    static PassRefPtr<SerializedScriptValue> booleanValue(bool value);

    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);

private:
    enum StringDataMode {
        StringValue,
        WireData
    };

    SerializedScriptValue();
    SerializedScriptValue(v8::Handle<v8::Value>, MessagePortArray*, bool& didThrow);
    explicit SerializedScriptValue(const String& wireData);

    String m_data;
};

} // namespace WebCore

#endif // SerializedScriptValue_h