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/*
* Copyright (C) 2009 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 SharedPersistent_h
#define SharedPersistent_h
#include "bindings/core/v8/ScopedPersistent.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include <v8.h>
namespace blink {
template <typename T>
class SharedPersistent : public RefCounted<SharedPersistent<T> > {
WTF_MAKE_NONCOPYABLE(SharedPersistent);
public:
static PassRefPtr<SharedPersistent<T> > create(v8::Handle<T> value, v8::Isolate* isolate)
{
return adoptRef(new SharedPersistent<T>(value, isolate));
}
v8::Local<T> newLocal(v8::Isolate* isolate) const
{
return m_value.newLocal(isolate);
}
bool isEmpty() { return m_value.isEmpty(); }
bool operator==(const SharedPersistent<T>& other)
{
return m_value == other.m_value;
}
private:
explicit SharedPersistent(v8::Handle<T> value, v8::Isolate* isolate) : m_value(isolate, value) { }
ScopedPersistent<T> m_value;
};
} // namespace blink
#endif // SharedPersistent_h
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