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���hc @ sa d Z d d l m Z d d l m Z d e j f d � � YZ e d e j � � Z d � Z d S( sR A 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')()
i����( t descriptor_pool( t message_factoryt SymbolDatabasec B sM e Z d Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z RS( s' A database of Python generated symbols.c C s' | j } | | j | <| j | � | S( s� Registers the given message type in the local database.
Calls to GetSymbol() and GetMessages() will return messages registered here.
Args:
message: a message.Message, to be registered.
Returns:
The provided message.
( t
DESCRIPTORt _classest RegisterMessageDescriptor( t selft messaget desc( ( sC /usr/lib/python2.7/site-packages/google/protobuf/symbol_database.pyt RegisterMessageD s
c C s | j j | � d S( s� Registers the given message descriptor in the local database.
Args:
message_descriptor: a descriptor.MessageDescriptor.
N( t poolt
AddDescriptor( R t message_descriptor( ( sC /usr/lib/python2.7/site-packages/google/protobuf/symbol_database.pyR U s c C s | j j | � | S( s� Registers the given enum descriptor in the local database.
Args:
enum_descriptor: a descriptor.EnumDescriptor.
Returns:
The provided descriptor.
( R
t AddEnumDescriptor( R t enum_descriptor( ( sC /usr/lib/python2.7/site-packages/google/protobuf/symbol_database.pyt RegisterEnumDescriptor] s c C s | j j | � d S( s� Registers the given service descriptor in the local database.
Args:
service_descriptor: a descriptor.ServiceDescriptor.
Returns:
The provided descriptor.
N( R
t AddServiceDescriptor( R t service_descriptor( ( sC /usr/lib/python2.7/site-packages/google/protobuf/symbol_database.pyt RegisterServiceDescriptori s c C s | j j | � d S( s� Registers the given file descriptor in the local database.
Args:
file_descriptor: a descriptor.FileDescriptor.
Returns:
The provided descriptor.
N( R
t AddFileDescriptor( R t file_descriptor( ( sC /usr/lib/python2.7/site-packages/google/protobuf/symbol_database.pyt RegisterFileDescriptort s c C s | j | j j | � S( sx Tries 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: A str, a protocol buffer symbol.
Returns:
A Python class corresponding to the symbol.
Raises:
KeyError: if the symbol could not be found.
( R R
t FindMessageTypeByName( R t symbol( ( sC /usr/lib/python2.7/site-packages/google/protobuf/symbol_database.pyt GetSymbol s c s� � f d � � i } x} | D]u } | j j | � } xZ | j j � D]I } x@ � | � D]2 } y | j | | | j <WqW t k
r� qW XqW WqD Wq W| S( s Gets 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: 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.
c 3 s9 | Vx- | j D]" } x � | � D] } | Vq" Wq Wd S( sC Walk a message Descriptor and recursively yields all message names.N( t nested_types( R t msg_desct nested_desc( t _GetAllMessages( sC /usr/lib/python2.7/site-packages/google/protobuf/symbol_database.pyR � s ( R
t FindFileByNamet message_types_by_namet valuesR t full_namet KeyError( R t filest resultt file_namet file_descR R ( ( R sC /usr/lib/python2.7/site-packages/google/protobuf/symbol_database.pyt GetMessages� s
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t __name__t
__module__t __doc__R R R R R R R& ( ( ( sC /usr/lib/python2.7/site-packages/google/protobuf/symbol_database.pyR A s R
c C s t S( s# Returns the default SymbolDatabase.( t _DEFAULT( ( ( sC /usr/lib/python2.7/site-packages/google/protobuf/symbol_database.pyt Default� s N( R) t google.protobufR R t MessageFactoryR R+ R* ( ( ( sC /usr/lib/python2.7/site-packages/google/protobuf/symbol_database.pyt <module>: s
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