/* * 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/v8/ScopedPersistent.h" #include <v8.h> #include "wtf/PassRefPtr.h" #include "wtf/RefCounted.h" namespace WebCore { 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 WebCore #endif // SharedPersistent_h