--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/bindings/js/SerializedScriptValue.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,233 @@
+/*
+ * Copyright (C) 2009 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 COMPUTER, INC. ``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 COMPUTER, INC. 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"
+
+typedef const struct OpaqueJSContext* JSContextRef;
+typedef const struct OpaqueJSValue* JSValueRef;
+
+namespace WebCore {
+    class File;
+    class FileList;
+    class ImageData;
+    class SerializedArray;
+    class SerializedFileList;
+    class SerializedImageData;
+    class SerializedObject;
+
+    class SharedSerializedData : public RefCounted<SharedSerializedData> {
+    public:
+        virtual ~SharedSerializedData() { }
+        SerializedArray* asArray();
+        SerializedObject* asObject();
+        SerializedFileList* asFileList();
+        SerializedImageData* asImageData();
+    };
+
+    class SerializedScriptValue;
+
+    class SerializedScriptValueData {
+    public:
+        enum SerializedType {
+            EmptyType,
+            DateType,
+            NumberType,
+            ImmediateType,
+            ObjectType,
+            ArrayType,
+            StringType,
+            FileType,
+            FileListType,
+            ImageDataType
+        };
+
+        SerializedType type() const { return m_type; }
+        static SerializedScriptValueData serialize(JSC::ExecState*, JSC::JSValue);
+        JSC::JSValue deserialize(JSC::ExecState*, JSC::JSGlobalObject*, bool mustCopy) const;
+
+        ~SerializedScriptValueData()
+        {
+            if (m_sharedData)
+                tearDownSerializedData();
+        }
+
+        SerializedScriptValueData()
+            : m_type(EmptyType)
+        {
+        }
+
+        explicit SerializedScriptValueData(const String& string)
+            : m_type(StringType)
+            , m_string(string.crossThreadString()) // FIXME: Should be able to just share the Rep
+        {
+        }
+        
+        explicit SerializedScriptValueData(const File*);
+        explicit SerializedScriptValueData(const FileList*);
+        explicit SerializedScriptValueData(const ImageData*);
+
+        explicit SerializedScriptValueData(JSC::JSValue value)
+            : m_type(ImmediateType)
+        {
+            ASSERT(!value.isCell());
+            m_data.m_immediate = JSC::JSValue::encode(value);
+        }
+
+        SerializedScriptValueData(SerializedType type, double value)
+            : m_type(type)
+        {
+            m_data.m_double = value;
+        }
+
+        SerializedScriptValueData(RefPtr<SerializedObject>);
+        SerializedScriptValueData(RefPtr<SerializedArray>);
+
+        JSC::JSValue asImmediate() const
+        {
+            ASSERT(m_type == ImmediateType);
+            return JSC::JSValue::decode(m_data.m_immediate);
+        }
+
+        double asDouble() const
+        {
+            ASSERT(m_type == NumberType || m_type == DateType);
+            return m_data.m_double;
+        }
+
+        String asString() const
+        {
+            ASSERT(m_type == StringType || m_type == FileType);
+            return m_string;
+        }
+
+        SerializedObject* asObject() const
+        {
+            ASSERT(m_type == ObjectType);
+            ASSERT(m_sharedData);
+            return m_sharedData->asObject();
+        }
+
+        SerializedArray* asArray() const
+        {
+            ASSERT(m_type == ArrayType);
+            ASSERT(m_sharedData);
+            return m_sharedData->asArray();
+        }
+
+        SerializedFileList* asFileList() const
+        {
+            ASSERT(m_type == FileListType);
+            ASSERT(m_sharedData);
+            return m_sharedData->asFileList();
+        }
+        
+        SerializedImageData* asImageData() const
+        {
+            ASSERT(m_type == ImageDataType);
+            ASSERT(m_sharedData);
+            return m_sharedData->asImageData();
+        }
+
+        operator bool() const { return m_type != EmptyType; }
+
+        SerializedScriptValueData release()
+        {
+            SerializedScriptValueData result = *this;
+            *this = SerializedScriptValueData();
+            return result;
+        }
+
+    private:
+        void tearDownSerializedData();
+        SerializedType m_type;
+        RefPtr<SharedSerializedData> m_sharedData;
+        String m_string;
+        union {
+            double m_double;
+            JSC::EncodedJSValue m_immediate;
+        } m_data;
+    };
+
+    class SerializedScriptValue : public RefCounted<SerializedScriptValue> {
+    public:
+        static PassRefPtr<SerializedScriptValue> create(JSC::ExecState* exec, JSC::JSValue value)
+        {
+            return adoptRef(new SerializedScriptValue(SerializedScriptValueData::serialize(exec, value)));
+        }
+
+        static PassRefPtr<SerializedScriptValue> create(JSContextRef, JSValueRef value, JSValueRef* exception);
+
+        static PassRefPtr<SerializedScriptValue> create(String string)
+        {
+            return adoptRef(new SerializedScriptValue(SerializedScriptValueData(string)));
+        }
+
+        static PassRefPtr<SerializedScriptValue> create()
+        {
+            return adoptRef(new SerializedScriptValue(SerializedScriptValueData()));
+        }
+
+        PassRefPtr<SerializedScriptValue> release()
+        {
+            PassRefPtr<SerializedScriptValue> result = adoptRef(new SerializedScriptValue(m_value));
+            m_value = SerializedScriptValueData();
+            result->m_mustCopy = true;
+            return result;
+        }
+
+        String toString()
+        {
+            if (m_value.type() != SerializedScriptValueData::StringType)
+                return "";
+            return m_value.asString();
+        }
+
+        JSC::JSValue deserialize(JSC::ExecState* exec, JSC::JSGlobalObject* globalObject)
+        {
+            if (!m_value)
+                return JSC::jsNull();
+            return m_value.deserialize(exec, globalObject, m_mustCopy);
+        }
+
+        JSValueRef deserialize(JSContextRef, JSValueRef* exception);
+        ~SerializedScriptValue();
+
+    private:
+        SerializedScriptValue(SerializedScriptValueData value)
+            : m_value(value)
+            , m_mustCopy(false)
+        {
+        }
+
+        SerializedScriptValueData m_value;
+        bool m_mustCopy;
+    };
+}
+
+#endif // SerializedScriptValue_h