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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
#ifndef SRC_BASE_OBJECT_H_
#define SRC_BASE_OBJECT_H_
#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#include "v8.h"
namespace node {
class Environment;
class BaseObject {
public:
inline BaseObject(Environment* env, v8::Local<v8::Object> handle);
inline virtual ~BaseObject();
// Returns the wrapped object. Returns an empty handle when
// persistent.IsEmpty() is true.
inline v8::Local<v8::Object> object();
// The parent class is responsible for calling .Reset() on destruction
// when the persistent handle is strong because there is no way for
// BaseObject to know when the handle goes out of scope.
// Weak handles have been reset by the time the destructor runs but
// calling .Reset() again is harmless.
inline v8::Persistent<v8::Object>& persistent();
inline Environment* env() const;
// The handle_ must have an internal field count > 0, and the first
// index is reserved for a pointer to this class. This is an
// implicit requirement, but Node does not have a case where it's
// required that MakeWeak() be called and the internal field not
// be set.
template <typename Type>
inline void MakeWeak(Type* ptr);
inline void ClearWeak();
private:
BaseObject();
template <typename Type>
static inline void WeakCallback(
const v8::WeakCallbackInfo<Type>& data);
v8::Persistent<v8::Object> persistent_handle_;
Environment* env_;
};
} // namespace node
#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#endif // SRC_BASE_OBJECT_H_
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