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      1 /*
      2  * Copyright (c) 2008, Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef ScriptValue_h
     32 #define ScriptValue_h
     33 
     34 #include "PlatformString.h"
     35 #include "ScriptState.h"
     36 #include <runtime/Protect.h>
     37 #include <wtf/PassRefPtr.h>
     38 
     39 namespace WebCore {
     40 
     41 class String;
     42 class SerializedScriptValue;
     43 
     44 class ScriptValue {
     45 public:
     46     ScriptValue(JSC::JSValue value = JSC::JSValue()) : m_value(value) {}
     47     virtual ~ScriptValue() {}
     48 
     49     JSC::JSValue jsValue() const { return m_value.get(); }
     50     bool getString(ScriptState*, String& result) const;
     51     String toString(ScriptState* scriptState) const { return m_value.get().toString(scriptState); }
     52     bool isEqual(ScriptState*, const ScriptValue&) const;
     53     bool isNull() const;
     54     bool isUndefined() const;
     55     bool isObject() const;
     56     bool hasNoValue() const { return m_value == JSC::JSValue(); }
     57 
     58     PassRefPtr<SerializedScriptValue> serialize(ScriptState*);
     59     static ScriptValue deserialize(ScriptState*, SerializedScriptValue*);
     60 
     61 private:
     62     JSC::ProtectedJSValue m_value;
     63 };
     64 
     65 } // namespace WebCore
     66 
     67 #endif // ScriptValue_h
     68