o = jx@sXdZddlZddlmZddlmZddlmZGdddZeedZ d d ZdS) aSA database of Python protocol buffer generated symbols. SymbolDatabase is the MessageFactory for messages generated at compile time, and makes it easy to create new instances of a registered type, given only the type's protocol buffer symbol name. Example usage:: db = symbol_database.SymbolDatabase() # Register symbols of interest, from one or multiple files. db.RegisterFileDescriptor(my_proto_pb2.DESCRIPTOR) db.RegisterMessage(my_proto_pb2.MyMessage) db.RegisterEnumDescriptor(my_proto_pb2.MyEnum.DESCRIPTOR) # The database can be used as a MessageFactory, to generate types based on # their name: types = db.GetMessages(['my_proto.proto']) my_message_instance = types['MyMessage']() # The database's underlying descriptor pool can be queried, so it's not # necessary to know a type's filename to be able to generate it: filename = db.pool.FindFileContainingSymbol('MyMessage') my_message_instance = db.GetMessages([filename])['MyMessage']() # This functionality is also provided directly via a convenience method: my_message_instance = db.GetSymbol('MyMessage')() N)api_implementation)descriptor_pool)message_factoryc@sVeZdZdZiZdddZddZddZd d Zd d Z d dZ ddZ ddZ dS)SymbolDatabasez'A database of Python generated symbols.NcCs|pt|_dS)z!Initializes a new SymbolDatabase.N)rZDescriptorPoolpool)selfrriC:\Users\psant\Downloads\Anu Raj Backend\school\venv\Lib\site-packages\google/protobuf/symbol_database.py__init__2szSymbolDatabase.__init__cCs|j}||j|<|||S)a@Registers the given message type in the local database. Calls to GetSymbol() and GetMessages() will return messages registered here. Args: message: A :class:`google.protobuf.message.Message` subclass (or instance); its descriptor will be registered. Returns: The provided message. N)Z DESCRIPTOR_classesRegisterMessageDescriptor)rmessagedescrrr RegisterMessage6s  zSymbolDatabase.RegisterMessagecC tdkr|j|dSdS)zRegisters the given message descriptor in the local database. Args: message_descriptor (Descriptor): the message descriptor to add. pythonN)rTyperZ_AddDescriptor)rZmessage_descriptorrrr r H z(SymbolDatabase.RegisterMessageDescriptorcCstdkr |j||S)zRegisters the given enum descriptor in the local database. Args: enum_descriptor (EnumDescriptor): The enum descriptor to register. Returns: EnumDescriptor: The provided descriptor. rN)rrrZ_AddEnumDescriptor)rZenum_descriptorrrr RegisterEnumDescriptorRs z%SymbolDatabase.RegisterEnumDescriptorcCr)zRegisters the given service descriptor in the local database. Args: service_descriptor (ServiceDescriptor): the service descriptor to register. rN)rrrZ_AddServiceDescriptor)rZservice_descriptorrrr RegisterServiceDescriptor`s z(SymbolDatabase.RegisterServiceDescriptorcCr)zRegisters the given file descriptor in the local database. Args: file_descriptor (FileDescriptor): The file descriptor to register. rN)rrrZ_InternalAddFileDescriptor)rZfile_descriptorrrr RegisterFileDescriptorkrz%SymbolDatabase.RegisterFileDescriptorcCs|j|j|S)awTries to find a symbol in the local database. Currently, this method only returns message.Message instances, however, if may be extended in future to support other symbol types. Args: symbol (str): a protocol buffer symbol. Returns: A Python class corresponding to the symbol. Raises: KeyError: if the symbol could not be found. N)r rZFindMessageTypeByName)rsymbolrrr GetSymboluszSymbolDatabase.GetSymbolc snfddi}|D]*}|j|}|jD]}|D]}z |j|||j<Wqty2Yqwqq |S)aGets all registered messages from a specified file. Only messages already created and registered will be returned; (this is the case for imported _pb2 modules) But unlike MessageFactory, this version also returns already defined nested messages, but does not register any message extensions. Args: files (list[str]): The file names to extract messages from. Returns: A dictionary mapping proto names to the message classes. Raises: KeyError: if a file could not be found. c3s,|V|jD] }|D]}|Vq qdS)zCWalk a message Descriptor and recursively yields all message names.N)Z nested_types)rmsg_descZ nested_desc_GetAllMessagesrr rs  z3SymbolDatabase.GetMessages.._GetAllMessagesN)rZFindFileByNameZmessage_types_by_namevaluesr Z full_nameKeyError)rfilesresult file_nameZ file_descrrrrr GetMessagess    zSymbolDatabase.GetMessages)N) __name__ __module__ __qualname____doc__r r rr rrrrr!rrrr r,s    r)rcCstS)z#Returns the default SymbolDatabase.N)_DEFAULTrrrr Defaultsr') r%warningsZgoogle.protobuf.internalrZgoogle.protobufrrrr'r&rrrr s