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message_factory.pyo
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� Du�ac @ sh d Z d Z d d l m Z d d l m Z d d l m Z d e f d � � YZ e � Z d � Z d S( so Provides a factory class for generating dynamic messages. The easiest way to use this class is if you have access to the FileDescriptor protos containing the messages you want to create you can just do the following: message_classes = message_factory.GetMessages(iterable_of_file_descriptors) my_proto_instance = message_classes['some.proto.package.MessageName']() s" matthewtoia@google.com (Matt Toia)i����( t descriptor_pool( t message( t reflectiont MessageFactoryc B s, e Z d Z d d � Z d � Z d � Z RS( s@ Factory for creating Proto2 messages from descriptors in a pool.c C s" | p t j � | _ i | _ d S( s Initializes a new factory.N( R t DescriptorPoolt poolt _classes( t selfR ( ( sC /usr/lib/python2.7/site-packages/google/protobuf/message_factory.pyt __init__2 s c C s | | j k r� | j } t t k r< | j j d d � } n t j | t j f i | d 6d d 6� } | | j | <x- | j D]" } | j r| | j | j � q| q| WxY | j j D]H } | j | j k r� | j | j � n | j | j } | j | � q� Wn | j | S( sD Builds a proto2 message class based on the passed in descriptor. Passing a descriptor with a fully qualified name matching a previous invocation will cause the same class to be returned. Args: descriptor: The descriptor to build from. Returns: A class describing the passed in descriptor. t asciit ignoret DESCRIPTORt __module__N( R t namet strt bytest encodeR t GeneratedProtocolMessageTypeR t Messaget Nonet fieldst message_typet GetPrototypeR t extensionst containing_typet RegisterExtension( R t descriptort descriptor_namet result_classt fieldt extensiont extended_class( ( sC /usr/lib/python2.7/site-packages/google/protobuf/message_factory.pyR 9 s$ c C s� i } x� | D]� } | j j | � } x- | j j � D] } | j | � | | j <q5 WxY | j j � D]H } | j | j k r� | j | j � n | j | j } | j | � qe Wq W| S( s� Gets all the messages from a specified file. This will find and resolve dependencies, failing if the descriptor pool cannot satisfy them. Args: files: The file names to extract messages from. Returns: A dictionary mapping proto names to the message classes. This will include any dependent messages as well as any messages defined in the same file as a specified message. ( R t FindFileByNamet message_types_by_namet valuesR t full_namet extensions_by_nameR R R ( R t filest resultt file_namet file_desct descR R ( ( sC /usr/lib/python2.7/site-packages/google/protobuf/message_factory.pyt GetMessagesY s N( t __name__R t __doc__R R R R* ( ( ( sC /usr/lib/python2.7/site-packages/google/protobuf/message_factory.pyR / s c sf d � | D� � � � f d � � x � rB � � j � d � q% Wt j g | D] } | j ^ qP � S( s^ Builds a dictionary of all the messages available in a set of files. Args: file_protos: Iterable of FileDescriptorProto to build messages out of. Returns: A dictionary mapping proto names to the message classes. This will include any dependent messages as well as any messages defined in the same file as a specified message. c S s i | ] } | | j � q S( ( R ( t .0t file_proto( ( sC /usr/lib/python2.7/site-packages/google/protobuf/message_factory.pys <dictcomp>� s c sJ x3 | j D]( } | � k r � � j | � � q q Wt j j | � d S( N( t dependencyt popt _FACTORYR t Add( R. R/ ( t _AddFilet file_by_name( sC /usr/lib/python2.7/site-packages/google/protobuf/message_factory.pyR3 � s i ( t popitemR1 R* R ( t file_protosR. ( ( R3 R4 sC /usr/lib/python2.7/site-packages/google/protobuf/message_factory.pyR* � s N( R, t __author__t google.protobufR R R t objectR R1 R* ( ( ( sC /usr/lib/python2.7/site-packages/google/protobuf/message_factory.pyt <module>& s O