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author | Jisi Liu <jisi.liu@gmail.com> | 2016-04-28 14:34:59 -0700 |
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committer | Jisi Liu <jisi.liu@gmail.com> | 2016-04-28 14:34:59 -0700 |
commit | cf14183bcd5485b4a71541599ddce0b35eb71352 (patch) | |
tree | 12f6e5eb731d7a70cdac4cdafc8b3131629413e2 /python/google/protobuf/pyext/message.cc | |
parent | f00300d7f04f1c38a7d70e271f9232b94dd0e326 (diff) | |
download | protobuf-cf14183bcd5485b4a71541599ddce0b35eb71352.tar.gz protobuf-cf14183bcd5485b4a71541599ddce0b35eb71352.tar.bz2 protobuf-cf14183bcd5485b4a71541599ddce0b35eb71352.zip |
Down integrate from Google internal.
Diffstat (limited to 'python/google/protobuf/pyext/message.cc')
-rw-r--r-- | python/google/protobuf/pyext/message.cc | 120 |
1 files changed, 63 insertions, 57 deletions
diff --git a/python/google/protobuf/pyext/message.cc b/python/google/protobuf/pyext/message.cc index 6d7b2b0f..83c151ff 100644 --- a/python/google/protobuf/pyext/message.cc +++ b/python/google/protobuf/pyext/message.cc @@ -98,31 +98,6 @@ static PyObject* PythonMessage_class; static PyObject* kEmptyWeakref; static PyObject* WKT_classes = NULL; -// Defines the Metaclass of all Message classes. -// It allows us to cache some C++ pointers in the class object itself, they are -// faster to extract than from the type's dictionary. - -struct PyMessageMeta { - // This is how CPython subclasses C structures: the base structure must be - // the first member of the object. - PyHeapTypeObject super; - - // C++ descriptor of this message. - const Descriptor* message_descriptor; - - // Owned reference, used to keep the pointer above alive. - PyObject* py_message_descriptor; - - // The Python DescriptorPool used to create the class. It is needed to resolve - // fields descriptors, including extensions fields; its C++ MessageFactory is - // used to instantiate submessages. - // This can be different from DESCRIPTOR.file.pool, in the case of a custom - // DescriptorPool which defines new extensions. - // We own the reference, because it's important to keep the descriptors and - // factory alive. - PyDescriptorPool* py_descriptor_pool; -}; - namespace message_meta { static int InsertEmptyWeakref(PyTypeObject* base); @@ -173,10 +148,6 @@ static int AddDescriptors(PyObject* cls, const Descriptor* descriptor) { } // For each enum set cls.<enum name> = EnumTypeWrapper(<enum descriptor>). - // - // The enum descriptor we get from - // <messagedescriptor>.enum_types_by_name[name] - // which was built previously. for (int i = 0; i < descriptor->enum_type_count(); ++i) { const EnumDescriptor* enum_descriptor = descriptor->enum_type(i); ScopedPyObjectPtr enum_type( @@ -309,7 +280,7 @@ static PyObject* New(PyTypeObject* type, if (result == NULL) { return NULL; } - PyMessageMeta* newtype = reinterpret_cast<PyMessageMeta*>(result.get()); + CMessageClass* newtype = reinterpret_cast<CMessageClass*>(result.get()); // Insert the empty weakref into the base classes. if (InsertEmptyWeakref( @@ -338,7 +309,7 @@ static PyObject* New(PyTypeObject* type, // Add the message to the DescriptorPool. if (cdescriptor_pool::RegisterMessageClass(newtype->py_descriptor_pool, - descriptor, result.get()) < 0) { + descriptor, newtype) < 0) { return NULL; } @@ -349,7 +320,7 @@ static PyObject* New(PyTypeObject* type, return result.release(); } -static void Dealloc(PyMessageMeta *self) { +static void Dealloc(CMessageClass *self) { Py_DECREF(self->py_message_descriptor); Py_DECREF(self->py_descriptor_pool); Py_TYPE(self)->tp_free(reinterpret_cast<PyObject*>(self)); @@ -378,10 +349,10 @@ static int InsertEmptyWeakref(PyTypeObject *base_type) { } // namespace message_meta -PyTypeObject PyMessageMeta_Type = { +PyTypeObject CMessageClass_Type = { PyVarObject_HEAD_INIT(&PyType_Type, 0) FULL_MODULE_NAME ".MessageMeta", // tp_name - sizeof(PyMessageMeta), // tp_basicsize + sizeof(CMessageClass), // tp_basicsize 0, // tp_itemsize (destructor)message_meta::Dealloc, // tp_dealloc 0, // tp_print @@ -419,16 +390,16 @@ PyTypeObject PyMessageMeta_Type = { message_meta::New, // tp_new }; -static PyMessageMeta* CheckMessageClass(PyTypeObject* cls) { - if (!PyObject_TypeCheck(cls, &PyMessageMeta_Type)) { +static CMessageClass* CheckMessageClass(PyTypeObject* cls) { + if (!PyObject_TypeCheck(cls, &CMessageClass_Type)) { PyErr_Format(PyExc_TypeError, "Class %s is not a Message", cls->tp_name); return NULL; } - return reinterpret_cast<PyMessageMeta*>(cls); + return reinterpret_cast<CMessageClass*>(cls); } static const Descriptor* GetMessageDescriptor(PyTypeObject* cls) { - PyMessageMeta* type = CheckMessageClass(cls); + CMessageClass* type = CheckMessageClass(cls); if (type == NULL) { return NULL; } @@ -783,9 +754,9 @@ namespace cmessage { PyDescriptorPool* GetDescriptorPoolForMessage(CMessage* message) { // No need to check the type: the type of instances of CMessage is always - // an instance of PyMessageMeta. Let's prove it with a debug-only check. + // an instance of CMessageClass. Let's prove it with a debug-only check. GOOGLE_DCHECK(PyObject_TypeCheck(message, &CMessage_Type)); - return reinterpret_cast<PyMessageMeta*>(Py_TYPE(message))->py_descriptor_pool; + return reinterpret_cast<CMessageClass*>(Py_TYPE(message))->py_descriptor_pool; } MessageFactory* GetFactoryForMessage(CMessage* message) { @@ -1090,6 +1061,10 @@ int InitAttributes(CMessage* self, PyObject* kwargs) { PyString_AsString(name)); return -1; } + if (value == Py_None) { + // field=None is the same as no field at all. + continue; + } if (descriptor->is_map()) { ScopedPyObjectPtr map(GetAttr(self, name)); const FieldDescriptor* value_descriptor = @@ -1220,9 +1195,9 @@ int InitAttributes(CMessage* self, PyObject* kwargs) { // Allocates an incomplete Python Message: the caller must fill self->message, // self->owner and eventually self->parent. -CMessage* NewEmptyMessage(PyObject* type, const Descriptor *descriptor) { +CMessage* NewEmptyMessage(CMessageClass* type) { CMessage* self = reinterpret_cast<CMessage*>( - PyType_GenericAlloc(reinterpret_cast<PyTypeObject*>(type), 0)); + PyType_GenericAlloc(&type->super.ht_type, 0)); if (self == NULL) { return NULL; } @@ -1242,7 +1217,7 @@ CMessage* NewEmptyMessage(PyObject* type, const Descriptor *descriptor) { // Creates a new C++ message and takes ownership. static PyObject* New(PyTypeObject* cls, PyObject* unused_args, PyObject* unused_kwargs) { - PyMessageMeta* type = CheckMessageClass(cls); + CMessageClass* type = CheckMessageClass(cls); if (type == NULL) { return NULL; } @@ -1258,8 +1233,7 @@ static PyObject* New(PyTypeObject* cls, return NULL; } - CMessage* self = NewEmptyMessage(reinterpret_cast<PyObject*>(type), - message_descriptor); + CMessage* self = NewEmptyMessage(type); if (self == NULL) { return NULL; } @@ -2023,10 +1997,34 @@ static PyObject* RegisterExtension(PyObject* cls, PyErr_SetString(PyExc_TypeError, "no extensions_by_number on class"); return NULL; } + ScopedPyObjectPtr number(PyObject_GetAttrString(extension_handle, "number")); if (number == NULL) { return NULL; } + + // If the extension was already registered by number, check that it is the + // same. + existing_extension = PyDict_GetItem(extensions_by_number.get(), number.get()); + if (existing_extension != NULL) { + const FieldDescriptor* existing_extension_descriptor = + GetExtensionDescriptor(existing_extension); + if (existing_extension_descriptor != descriptor) { + const Descriptor* msg_desc = GetMessageDescriptor( + reinterpret_cast<PyTypeObject*>(cls)); + PyErr_Format( + PyExc_ValueError, + "Extensions \"%s\" and \"%s\" both try to extend message type " + "\"%s\" with field number %ld.", + existing_extension_descriptor->full_name().c_str(), + descriptor->full_name().c_str(), + msg_desc->full_name().c_str(), + PyInt_AsLong(number.get())); + return NULL; + } + // Nothing else to do. + Py_RETURN_NONE; + } if (PyDict_SetItem(extensions_by_number.get(), number.get(), extension_handle) < 0) { return NULL; @@ -2166,6 +2164,12 @@ static PyObject* ListFields(CMessage* self) { return all_fields.release(); } +static PyObject* DiscardUnknownFields(CMessage* self) { + AssureWritable(self); + self->message->DiscardUnknownFields(); + Py_RETURN_NONE; +} + PyObject* FindInitializationErrors(CMessage* self) { Message* message = self->message; vector<string> errors; @@ -2309,14 +2313,13 @@ PyObject* InternalGetSubMessage( const Message& sub_message = reflection->GetMessage( *self->message, field_descriptor, pool->message_factory); - PyObject *message_class = cdescriptor_pool::GetMessageClass( + CMessageClass* message_class = cdescriptor_pool::GetMessageClass( pool, field_descriptor->message_type()); if (message_class == NULL) { return NULL; } - CMessage* cmsg = cmessage::NewEmptyMessage(message_class, - sub_message.GetDescriptor()); + CMessage* cmsg = cmessage::NewEmptyMessage(message_class); if (cmsg == NULL) { return NULL; } @@ -2585,6 +2588,8 @@ static PyMethodDef Methods[] = { "Clears a message field." }, { "CopyFrom", (PyCFunction)CopyFrom, METH_O, "Copies a protocol message into the current message." }, + { "DiscardUnknownFields", (PyCFunction)DiscardUnknownFields, METH_NOARGS, + "Discards the unknown fields." }, { "FindInitializationErrors", (PyCFunction)FindInitializationErrors, METH_NOARGS, "Finds unset required fields." }, @@ -2654,7 +2659,7 @@ PyObject* GetAttr(CMessage* self, PyObject* name) { const Descriptor* entry_type = field_descriptor->message_type(); const FieldDescriptor* value_type = entry_type->FindFieldByName("value"); if (value_type->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) { - PyObject* value_class = cdescriptor_pool::GetMessageClass( + CMessageClass* value_class = cdescriptor_pool::GetMessageClass( GetDescriptorPoolForMessage(self), value_type->message_type()); if (value_class == NULL) { return NULL; @@ -2677,7 +2682,7 @@ PyObject* GetAttr(CMessage* self, PyObject* name) { if (field_descriptor->label() == FieldDescriptor::LABEL_REPEATED) { PyObject* py_container = NULL; if (field_descriptor->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) { - PyObject *message_class = cdescriptor_pool::GetMessageClass( + CMessageClass* message_class = cdescriptor_pool::GetMessageClass( GetDescriptorPoolForMessage(self), field_descriptor->message_type()); if (message_class == NULL) { return NULL; @@ -2749,7 +2754,7 @@ int SetAttr(CMessage* self, PyObject* name, PyObject* value) { } // namespace cmessage PyTypeObject CMessage_Type = { - PyVarObject_HEAD_INIT(&PyMessageMeta_Type, 0) + PyVarObject_HEAD_INIT(&CMessageClass_Type, 0) FULL_MODULE_NAME ".CMessage", // tp_name sizeof(CMessage), // tp_basicsize 0, // tp_itemsize @@ -2864,12 +2869,12 @@ bool InitProto2MessageModule(PyObject *m) { // Initialize constants defined in this file. InitGlobals(); - PyMessageMeta_Type.tp_base = &PyType_Type; - if (PyType_Ready(&PyMessageMeta_Type) < 0) { + CMessageClass_Type.tp_base = &PyType_Type; + if (PyType_Ready(&CMessageClass_Type) < 0) { return false; } PyModule_AddObject(m, "MessageMeta", - reinterpret_cast<PyObject*>(&PyMessageMeta_Type)); + reinterpret_cast<PyObject*>(&CMessageClass_Type)); if (PyType_Ready(&CMessage_Type) < 0) { return false; @@ -3077,9 +3082,10 @@ bool InitProto2MessageModule(PyObject *m) { } // namespace protobuf static PyMethodDef ModuleMethods[] = { - {"SetAllowOversizeProtos", - (PyCFunction)google::protobuf::python::cmessage::SetAllowOversizeProtos, - METH_O, "Enable/disable oversize proto parsing."}, + {"SetAllowOversizeProtos", + (PyCFunction)google::protobuf::python::cmessage::SetAllowOversizeProtos, + METH_O, "Enable/disable oversize proto parsing."}, + { NULL, NULL} }; #if PY_MAJOR_VERSION >= 3 |