1 // Protocol Buffers - Google's data interchange format 2 // Copyright 2008 Google Inc. All rights reserved. 3 // https://developers.google.com/protocol-buffers/ 4 // 5 // Redistribution and use in source and binary forms, with or without 6 // modification, are permitted provided that the following conditions are 7 // met: 8 // 9 // * Redistributions of source code must retain the above copyright 10 // notice, this list of conditions and the following disclaimer. 11 // * Redistributions in binary form must reproduce the above 12 // copyright notice, this list of conditions and the following disclaimer 13 // in the documentation and/or other materials provided with the 14 // distribution. 15 // * Neither the name of Google Inc. nor the names of its 16 // contributors may be used to endorse or promote products derived from 17 // this software without specific prior written permission. 18 // 19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 31 #ifndef GOOGLE_PROTOBUF_PYTHON_CPP_UNKNOWN_FIELDS_H__ 32 #define GOOGLE_PROTOBUF_PYTHON_CPP_UNKNOWN_FIELDS_H__ 33 34 #include <Python.h> 35 36 #include <memory> 37 #include <set> 38 39 #include <google/protobuf/pyext/message.h> 40 41 namespace google { 42 namespace protobuf { 43 44 class UnknownField; 45 class UnknownFieldSet; 46 47 namespace python { 48 struct CMessage; 49 50 typedef struct PyUnknownFields { 51 PyObject_HEAD; 52 // Strong pointer to the parent CMessage or PyUnknownFields. 53 // The top PyUnknownFields holds a reference to its parent CMessage 54 // object before release. 55 // Sub PyUnknownFields holds reference to parent PyUnknownFields. 56 PyObject* parent; 57 58 // Pointer to the C++ UnknownFieldSet. 59 // PyUnknownFields does not own this pointer. 60 const UnknownFieldSet* fields; 61 62 // Weak references to child unknown fields. 63 std::set<PyUnknownFields*> sub_unknown_fields; 64 } PyUnknownFields; 65 66 typedef struct PyUnknownFieldRef { 67 PyObject_HEAD; 68 // Every Python PyUnknownFieldRef holds a reference to its parent 69 // PyUnknownFields in order to keep it alive. 70 PyUnknownFields* parent; 71 72 // The UnknownField index in UnknownFields. 73 Py_ssize_t index; 74 } UknownFieldRef; 75 76 extern PyTypeObject PyUnknownFields_Type; 77 extern PyTypeObject PyUnknownFieldRef_Type; 78 79 namespace unknown_fields { 80 81 // Builds an PyUnknownFields for a specific message. 82 PyObject* NewPyUnknownFields(CMessage *parent); 83 void Clear(PyUnknownFields* self); 84 85 } // namespace unknown_fields 86 } // namespace python 87 } // namespace protobuf 88 } // namespace google 89 90 #endif // GOOGLE_PROTOBUF_PYTHON_CPP_UNKNOWN_FIELDS_H__ 91