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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 #include <Python.h> | |
| 32 | |
| 33 namespace google { | |
| 34 namespace protobuf { | |
| 35 namespace python { | |
| 36 | |
| 37 // Version constant. | |
| 38 // This is either 0 for python, 1 for CPP V1, 2 for CPP V2. | |
| 39 // | |
| 40 // 0 is default and is equivalent to | |
| 41 // PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python | |
| 42 // | |
| 43 // 1 is set with -DPYTHON_PROTO2_CPP_IMPL_V1 and is equivalent to | |
| 44 // PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=cpp | |
| 45 // and | |
| 46 // PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION_VERSION=1 | |
| 47 // | |
| 48 // 2 is set with -DPYTHON_PROTO2_CPP_IMPL_V2 and is equivalent to | |
| 49 // PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=cpp | |
| 50 // and | |
| 51 // PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION_VERSION=2 | |
| 52 #ifdef PYTHON_PROTO2_CPP_IMPL_V1 | |
| 53 #error "PYTHON_PROTO2_CPP_IMPL_V1 is no longer supported." | |
| 54 #else | |
| 55 #ifdef PYTHON_PROTO2_CPP_IMPL_V2 | |
| 56 static int kImplVersion = 2; | |
| 57 #else | |
| 58 #ifdef PYTHON_PROTO2_PYTHON_IMPL | |
| 59 static int kImplVersion = 0; | |
| 60 #else | |
| 61 | |
| 62 static int kImplVersion = -1; // -1 means "Unspecified by compiler flags". | |
| 63 | |
| 64 #endif // PYTHON_PROTO2_PYTHON_IMPL | |
| 65 #endif // PYTHON_PROTO2_CPP_IMPL_V2 | |
| 66 #endif // PYTHON_PROTO2_CPP_IMPL_V1 | |
| 67 | |
| 68 static const char* kImplVersionName = "api_version"; | |
| 69 | |
| 70 static const char* kModuleName = "_api_implementation"; | |
| 71 static const char kModuleDocstring[] = | |
| 72 "_api_implementation is a module that exposes compile-time constants that\n" | |
| 73 "determine the default API implementation to use for Python proto2.\n" | |
| 74 "\n" | |
| 75 "It complements api_implementation.py by setting defaults using compile-time\n" | |
| 76 "constants defined in C, such that one can set defaults at compilation\n" | |
| 77 "(e.g. with blaze flag --copt=-DPYTHON_PROTO2_CPP_IMPL_V2)."; | |
| 78 | |
| 79 #if PY_MAJOR_VERSION >= 3 | |
| 80 static struct PyModuleDef _module = { | |
| 81 PyModuleDef_HEAD_INIT, | |
| 82 kModuleName, | |
| 83 kModuleDocstring, | |
| 84 -1, | |
| 85 NULL, | |
| 86 NULL, | |
| 87 NULL, | |
| 88 NULL, | |
| 89 NULL | |
| 90 }; | |
| 91 #define INITFUNC PyInit__api_implementation | |
| 92 #define INITFUNC_ERRORVAL NULL | |
| 93 #else | |
| 94 #define INITFUNC init_api_implementation | |
| 95 #define INITFUNC_ERRORVAL | |
| 96 #endif | |
| 97 | |
| 98 extern "C" { | |
| 99 PyMODINIT_FUNC INITFUNC() { | |
| 100 #if PY_MAJOR_VERSION >= 3 | |
| 101 PyObject *module = PyModule_Create(&_module); | |
| 102 #else | |
| 103 PyObject *module = Py_InitModule3( | |
| 104 const_cast<char*>(kModuleName), | |
| 105 NULL, | |
| 106 const_cast<char*>(kModuleDocstring)); | |
| 107 #endif | |
| 108 if (module == NULL) { | |
| 109 return INITFUNC_ERRORVAL; | |
| 110 } | |
| 111 | |
| 112 // Adds the module variable "api_version". | |
| 113 if (PyModule_AddIntConstant( | |
| 114 module, | |
| 115 const_cast<char*>(kImplVersionName), | |
| 116 kImplVersion)) | |
| 117 #if PY_MAJOR_VERSION < 3 | |
| 118 return; | |
| 119 #else | |
| 120 { Py_DECREF(module); return NULL; } | |
| 121 | |
| 122 return module; | |
| 123 #endif | |
| 124 } | |
| 125 } | |
| 126 | |
| 127 } // namespace python | |
| 128 } // namespace protobuf | |
| 129 } // namespace google | |
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Chromium Code Reviews
Issue 1322483002:
Revert https://codereview.chromium.org/1291903002 (protobuf roll). (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master