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-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc. All rights reserved.
-// https://developers.google.com/protocol-buffers/
-//
-// 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.
-
-// Author: tibell@google.com (Johan Tibell)
-
-#ifndef GOOGLE_PROTOBUF_PYTHON_CPP_SCOPED_PYOBJECT_PTR_H__
-#define GOOGLE_PROTOBUF_PYTHON_CPP_SCOPED_PYOBJECT_PTR_H__
-
-#include <google/protobuf/stubs/common.h>
-
-#include <Python.h>
-
-namespace google {
-class ScopedPyObjectPtr {
- public:
- // Constructor. Defaults to initializing with NULL.
- // There is no way to create an uninitialized ScopedPyObjectPtr.
- explicit ScopedPyObjectPtr(PyObject* p = NULL) : ptr_(p) { }
-
- // Destructor. If there is a PyObject object, delete it.
- ~ScopedPyObjectPtr() {
- Py_XDECREF(ptr_);
- }
-
- // Reset. Deletes the current owned object, if any.
- // Then takes ownership of a new object, if given.
- // This function must be called with a reference that you own.
- // this->reset(this->get()) is wrong!
- // this->reset(this->release()) is OK.
- PyObject* reset(PyObject* p = NULL) {
- Py_XDECREF(ptr_);
- ptr_ = p;
- return ptr_;
- }
-
- // Releases ownership of the object.
- // The caller now owns the returned reference.
- PyObject* release() {
- PyObject* p = ptr_;
- ptr_ = NULL;
- return p;
- }
-
- PyObject* operator->() const {
- assert(ptr_ != NULL);
- return ptr_;
- }
-
- PyObject* get() const { return ptr_; }
-
- Py_ssize_t refcnt() const { return Py_REFCNT(ptr_); }
-
- void inc() const { Py_INCREF(ptr_); }
-
- // Comparison operators.
- // These return whether a ScopedPyObjectPtr and a raw pointer
- // refer to the same object, not just to two different but equal
- // objects.
- bool operator==(const PyObject* p) const { return ptr_ == p; }
- bool operator!=(const PyObject* p) const { return ptr_ != p; }
-
- private:
- PyObject* ptr_;
-
- GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ScopedPyObjectPtr);
-};
-
-} // namespace google
-#endif // GOOGLE_PROTOBUF_PYTHON_CPP_SCOPED_PYOBJECT_PTR_H__