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