1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
// 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__
|
