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Unified Diff: third_party/google/protobuf/symbol_database.py

Issue 1162993005: Renamed google.protobuf to protobuf26 (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/tools/depot_tools
Patch Set: Addressed comments Created 5 years, 7 months ago
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Index: third_party/google/protobuf/symbol_database.py
diff --git a/third_party/google/protobuf/symbol_database.py b/third_party/google/protobuf/symbol_database.py
deleted file mode 100644
index 7466fec5062f0b131fc55f5b9d93c3f9e1f646fc..0000000000000000000000000000000000000000
--- a/third_party/google/protobuf/symbol_database.py
+++ /dev/null
@@ -1,185 +0,0 @@
-# Protocol Buffers - Google's data interchange format
-# Copyright 2008 Google Inc. All rights reserved.
-# http://code.google.com/p/protobuf/
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-# * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-# * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-"""A database of Python protocol buffer generated symbols.
-
-SymbolDatabase makes it easy to create new instances of a registered type, given
-only the type's protocol buffer symbol name. Once all symbols are registered,
-they can be accessed using either the MessageFactory interface which
-SymbolDatabase exposes, or the DescriptorPool interface of the underlying
-pool.
-
-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')()
-"""
-
-
-from google.protobuf import descriptor_pool
-
-
-class SymbolDatabase(object):
- """A database of Python generated symbols.
-
- SymbolDatabase also models message_factory.MessageFactory.
-
- The symbol database can be used to keep a global registry of all protocol
- buffer types used within a program.
- """
-
- def __init__(self):
- """Constructor."""
-
- self._symbols = {}
- self._symbols_by_file = {}
- self.pool = descriptor_pool.DescriptorPool()
-
- def RegisterMessage(self, message):
- """Registers the given message type in the local database.
-
- Args:
- message: a message.Message, to be registered.
-
- Returns:
- The provided message.
- """
-
- desc = message.DESCRIPTOR
- self._symbols[desc.full_name] = message
- if desc.file.name not in self._symbols_by_file:
- self._symbols_by_file[desc.file.name] = {}
- self._symbols_by_file[desc.file.name][desc.full_name] = message
- self.pool.AddDescriptor(desc)
- return message
-
- def RegisterEnumDescriptor(self, enum_descriptor):
- """Registers the given enum descriptor in the local database.
-
- Args:
- enum_descriptor: a descriptor.EnumDescriptor.
-
- Returns:
- The provided descriptor.
- """
- self.pool.AddEnumDescriptor(enum_descriptor)
- return enum_descriptor
-
- def RegisterFileDescriptor(self, file_descriptor):
- """Registers the given file descriptor in the local database.
-
- Args:
- file_descriptor: a descriptor.FileDescriptor.
-
- Returns:
- The provided descriptor.
- """
- self.pool.AddFileDescriptor(file_descriptor)
-
- def GetSymbol(self, symbol):
- """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.
- """
-
- return self._symbols[symbol]
-
- def GetPrototype(self, descriptor):
- """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.
- """
-
- return self.GetSymbol(descriptor.full_name)
-
- def GetMessages(self, files):
- """Gets all the messages from a specified file.
-
- This will find and resolve dependencies, failing if they are not registered
- in the symbol database.
-
-
- 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.
-
- Raises:
- KeyError: if a file could not be found.
- """
-
- result = {}
- for f in files:
- result.update(self._symbols_by_file[f])
- return result
-
-_DEFAULT = SymbolDatabase()
-
-
-def Default():
- """Returns the default SymbolDatabase."""
- return _DEFAULT
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