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      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 // Author: petar (at) google.com (Petar Petrov)
     32 
     33 #ifndef GOOGLE_PROTOBUF_PYTHON_CPP_DESCRIPTOR_H__
     34 #define GOOGLE_PROTOBUF_PYTHON_CPP_DESCRIPTOR_H__
     35 
     36 #include <Python.h>
     37 #include <structmember.h>
     38 
     39 #include <google/protobuf/descriptor.h>
     40 
     41 #if PY_VERSION_HEX < 0x02050000 && !defined(PY_SSIZE_T_MIN)
     42 typedef int Py_ssize_t;
     43 #define PY_SSIZE_T_MAX INT_MAX
     44 #define PY_SSIZE_T_MIN INT_MIN
     45 #endif
     46 
     47 namespace google {
     48 namespace protobuf {
     49 namespace python {
     50 
     51 typedef struct CFieldDescriptor {
     52   PyObject_HEAD
     53 
     54   // The proto2 descriptor that this object represents.
     55   const google::protobuf::FieldDescriptor* descriptor;
     56 
     57   // Reference to the original field object in the Python DESCRIPTOR.
     58   PyObject* descriptor_field;
     59 } CFieldDescriptor;
     60 
     61 typedef struct {
     62   PyObject_HEAD
     63 
     64   const google::protobuf::DescriptorPool* pool;
     65 } CDescriptorPool;
     66 
     67 extern PyTypeObject CFieldDescriptor_Type;
     68 
     69 extern PyTypeObject CDescriptorPool_Type;
     70 
     71 namespace cdescriptor_pool {
     72 
     73 // Looks up a field by name. Returns a CDescriptor corresponding to
     74 // the field on success, or NULL on failure.
     75 //
     76 // Returns a new reference.
     77 PyObject* FindFieldByName(CDescriptorPool* self, PyObject* name);
     78 
     79 // Looks up an extension by name. Returns a CDescriptor corresponding
     80 // to the field on success, or NULL on failure.
     81 //
     82 // Returns a new reference.
     83 PyObject* FindExtensionByName(CDescriptorPool* self, PyObject* arg);
     84 
     85 }  // namespace cdescriptor_pool
     86 
     87 PyObject* Python_NewCDescriptorPool(PyObject* ignored, PyObject* args);
     88 PyObject* Python_BuildFile(PyObject* ignored, PyObject* args);
     89 bool InitDescriptor();
     90 google::protobuf::DescriptorPool* GetDescriptorPool();
     91 
     92 }  // namespace python
     93 }  // namespace protobuf
     94 
     95 }  // namespace google
     96 #endif  // GOOGLE_PROTOBUF_PYTHON_CPP_DESCRIPTOR_H__
     97