528 lines
18 KiB
Python
528 lines
18 KiB
Python
|
# 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.
|
||
|
|
|
||
|
|
"""Provides DescriptorPool to use as a container for proto2 descriptors.
|
||
|
|
|
||
|
|
The DescriptorPool is used in conjection with a DescriptorDatabase to maintain
|
||
|
|
a collection of protocol buffer descriptors for use when dynamically creating
|
||
|
|
message types at runtime.
|
||
|
|
|
||
|
|
For most applications protocol buffers should be used via modules generated by
|
||
|
|
the protocol buffer compiler tool. This should only be used when the type of
|
||
|
|
protocol buffers used in an application or library cannot be predetermined.
|
||
|
|
|
||
|
|
Below is a straightforward example on how to use this class:
|
||
|
|
|
||
|
|
pool = DescriptorPool()
|
||
|
|
file_descriptor_protos = [ ... ]
|
||
|
|
for file_descriptor_proto in file_descriptor_protos:
|
||
|
|
pool.Add(file_descriptor_proto)
|
||
|
|
my_message_descriptor = pool.FindMessageTypeByName('some.package.MessageType')
|
||
|
|
|
||
|
|
The message descriptor can be used in conjunction with the message_factory
|
||
|
|
module in order to create a protocol buffer class that can be encoded and
|
||
|
|
decoded.
|
||
|
|
"""
|
||
|
|
|
||
|
|
__author__ = 'matthewtoia@google.com (Matt Toia)'
|
||
|
|
|
||
|
|
from google.protobuf import descriptor_pb2
|
||
|
|
from google.protobuf import descriptor
|
||
|
|
from google.protobuf import descriptor_database
|
||
|
|
|
||
|
|
|
||
|
|
class DescriptorPool(object):
|
||
|
|
"""A collection of protobufs dynamically constructed by descriptor protos."""
|
||
|
|
|
||
|
|
def __init__(self, descriptor_db=None):
|
||
|
|
"""Initializes a Pool of proto buffs.
|
||
|
|
|
||
|
|
The descriptor_db argument to the constructor is provided to allow
|
||
|
|
specialized file descriptor proto lookup code to be triggered on demand. An
|
||
|
|
example would be an implementation which will read and compile a file
|
||
|
|
specified in a call to FindFileByName() and not require the call to Add()
|
||
|
|
at all. Results from this database will be cached internally here as well.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
descriptor_db: A secondary source of file descriptors.
|
||
|
|
"""
|
||
|
|
|
||
|
|
self._internal_db = descriptor_database.DescriptorDatabase()
|
||
|
|
self._descriptor_db = descriptor_db
|
||
|
|
self._descriptors = {}
|
||
|
|
self._enum_descriptors = {}
|
||
|
|
self._file_descriptors = {}
|
||
|
|
|
||
|
|
def Add(self, file_desc_proto):
|
||
|
|
"""Adds the FileDescriptorProto and its types to this pool.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
file_desc_proto: The FileDescriptorProto to add.
|
||
|
|
"""
|
||
|
|
|
||
|
|
self._internal_db.Add(file_desc_proto)
|
||
|
|
|
||
|
|
def FindFileByName(self, file_name):
|
||
|
|
"""Gets a FileDescriptor by file name.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
file_name: The path to the file to get a descriptor for.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
A FileDescriptor for the named file.
|
||
|
|
|
||
|
|
Raises:
|
||
|
|
KeyError: if the file can not be found in the pool.
|
||
|
|
"""
|
||
|
|
|
||
|
|
try:
|
||
|
|
file_proto = self._internal_db.FindFileByName(file_name)
|
||
|
|
except KeyError as error:
|
||
|
|
if self._descriptor_db:
|
||
|
|
file_proto = self._descriptor_db.FindFileByName(file_name)
|
||
|
|
else:
|
||
|
|
raise error
|
||
|
|
if not file_proto:
|
||
|
|
raise KeyError('Cannot find a file named %s' % file_name)
|
||
|
|
return self._ConvertFileProtoToFileDescriptor(file_proto)
|
||
|
|
|
||
|
|
def FindFileContainingSymbol(self, symbol):
|
||
|
|
"""Gets the FileDescriptor for the file containing the specified symbol.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
symbol: The name of the symbol to search for.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
A FileDescriptor that contains the specified symbol.
|
||
|
|
|
||
|
|
Raises:
|
||
|
|
KeyError: if the file can not be found in the pool.
|
||
|
|
"""
|
||
|
|
|
||
|
|
try:
|
||
|
|
file_proto = self._internal_db.FindFileContainingSymbol(symbol)
|
||
|
|
except KeyError as error:
|
||
|
|
if self._descriptor_db:
|
||
|
|
file_proto = self._descriptor_db.FindFileContainingSymbol(symbol)
|
||
|
|
else:
|
||
|
|
raise error
|
||
|
|
if not file_proto:
|
||
|
|
raise KeyError('Cannot find a file containing %s' % symbol)
|
||
|
|
return self._ConvertFileProtoToFileDescriptor(file_proto)
|
||
|
|
|
||
|
|
def FindMessageTypeByName(self, full_name):
|
||
|
|
"""Loads the named descriptor from the pool.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
full_name: The full name of the descriptor to load.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
The descriptor for the named type.
|
||
|
|
"""
|
||
|
|
|
||
|
|
full_name = full_name.lstrip('.') # fix inconsistent qualified name formats
|
||
|
|
if full_name not in self._descriptors:
|
||
|
|
self.FindFileContainingSymbol(full_name)
|
||
|
|
return self._descriptors[full_name]
|
||
|
|
|
||
|
|
def FindEnumTypeByName(self, full_name):
|
||
|
|
"""Loads the named enum descriptor from the pool.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
full_name: The full name of the enum descriptor to load.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
The enum descriptor for the named type.
|
||
|
|
"""
|
||
|
|
|
||
|
|
full_name = full_name.lstrip('.') # fix inconsistent qualified name formats
|
||
|
|
if full_name not in self._enum_descriptors:
|
||
|
|
self.FindFileContainingSymbol(full_name)
|
||
|
|
return self._enum_descriptors[full_name]
|
||
|
|
|
||
|
|
def _ConvertFileProtoToFileDescriptor(self, file_proto):
|
||
|
|
"""Creates a FileDescriptor from a proto or returns a cached copy.
|
||
|
|
|
||
|
|
This method also has the side effect of loading all the symbols found in
|
||
|
|
the file into the appropriate dictionaries in the pool.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
file_proto: The proto to convert.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
A FileDescriptor matching the passed in proto.
|
||
|
|
"""
|
||
|
|
|
||
|
|
if file_proto.name not in self._file_descriptors:
|
||
|
|
file_descriptor = descriptor.FileDescriptor(
|
||
|
|
name=file_proto.name,
|
||
|
|
package=file_proto.package,
|
||
|
|
options=file_proto.options,
|
||
|
|
serialized_pb=file_proto.SerializeToString())
|
||
|
|
scope = {}
|
||
|
|
dependencies = list(self._GetDeps(file_proto))
|
||
|
|
|
||
|
|
for dependency in dependencies:
|
||
|
|
dep_desc = self.FindFileByName(dependency.name)
|
||
|
|
dep_proto = descriptor_pb2.FileDescriptorProto.FromString(
|
||
|
|
dep_desc.serialized_pb)
|
||
|
|
package = '.' + dep_proto.package
|
||
|
|
package_prefix = package + '.'
|
||
|
|
|
||
|
|
def _strip_package(symbol):
|
||
|
|
if symbol.startswith(package_prefix):
|
||
|
|
return symbol[len(package_prefix):]
|
||
|
|
return symbol
|
||
|
|
|
||
|
|
symbols = list(self._ExtractSymbols(dep_proto.message_type, package))
|
||
|
|
scope.update(symbols)
|
||
|
|
scope.update((_strip_package(k), v) for k, v in symbols)
|
||
|
|
|
||
|
|
symbols = list(self._ExtractEnums(dep_proto.enum_type, package))
|
||
|
|
scope.update(symbols)
|
||
|
|
scope.update((_strip_package(k), v) for k, v in symbols)
|
||
|
|
|
||
|
|
for message_type in file_proto.message_type:
|
||
|
|
message_desc = self._ConvertMessageDescriptor(
|
||
|
|
message_type, file_proto.package, file_descriptor, scope)
|
||
|
|
file_descriptor.message_types_by_name[message_desc.name] = message_desc
|
||
|
|
for enum_type in file_proto.enum_type:
|
||
|
|
self._ConvertEnumDescriptor(enum_type, file_proto.package,
|
||
|
|
file_descriptor, None, scope)
|
||
|
|
for desc_proto in self._ExtractMessages(file_proto.message_type):
|
||
|
|
self._SetFieldTypes(desc_proto, scope)
|
||
|
|
|
||
|
|
for desc_proto in file_proto.message_type:
|
||
|
|
desc = scope[desc_proto.name]
|
||
|
|
file_descriptor.message_types_by_name[desc_proto.name] = desc
|
||
|
|
self.Add(file_proto)
|
||
|
|
self._file_descriptors[file_proto.name] = file_descriptor
|
||
|
|
|
||
|
|
return self._file_descriptors[file_proto.name]
|
||
|
|
|
||
|
|
def _ConvertMessageDescriptor(self, desc_proto, package=None, file_desc=None,
|
||
|
|
scope=None):
|
||
|
|
"""Adds the proto to the pool in the specified package.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
desc_proto: The descriptor_pb2.DescriptorProto protobuf message.
|
||
|
|
package: The package the proto should be located in.
|
||
|
|
file_desc: The file containing this message.
|
||
|
|
scope: Dict mapping short and full symbols to message and enum types.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
The added descriptor.
|
||
|
|
"""
|
||
|
|
|
||
|
|
if package:
|
||
|
|
desc_name = '.'.join((package, desc_proto.name))
|
||
|
|
else:
|
||
|
|
desc_name = desc_proto.name
|
||
|
|
|
||
|
|
if file_desc is None:
|
||
|
|
file_name = None
|
||
|
|
else:
|
||
|
|
file_name = file_desc.name
|
||
|
|
|
||
|
|
if scope is None:
|
||
|
|
scope = {}
|
||
|
|
|
||
|
|
nested = [
|
||
|
|
self._ConvertMessageDescriptor(nested, desc_name, file_desc, scope)
|
||
|
|
for nested in desc_proto.nested_type]
|
||
|
|
enums = [
|
||
|
|
self._ConvertEnumDescriptor(enum, desc_name, file_desc, None, scope)
|
||
|
|
for enum in desc_proto.enum_type]
|
||
|
|
fields = [self._MakeFieldDescriptor(field, desc_name, index)
|
||
|
|
for index, field in enumerate(desc_proto.field)]
|
||
|
|
extensions = [self._MakeFieldDescriptor(extension, desc_name, True)
|
||
|
|
for index, extension in enumerate(desc_proto.extension)]
|
||
|
|
extension_ranges = [(r.start, r.end) for r in desc_proto.extension_range]
|
||
|
|
if extension_ranges:
|
||
|
|
is_extendable = True
|
||
|
|
else:
|
||
|
|
is_extendable = False
|
||
|
|
desc = descriptor.Descriptor(
|
||
|
|
name=desc_proto.name,
|
||
|
|
full_name=desc_name,
|
||
|
|
filename=file_name,
|
||
|
|
containing_type=None,
|
||
|
|
fields=fields,
|
||
|
|
nested_types=nested,
|
||
|
|
enum_types=enums,
|
||
|
|
extensions=extensions,
|
||
|
|
options=desc_proto.options,
|
||
|
|
is_extendable=is_extendable,
|
||
|
|
extension_ranges=extension_ranges,
|
||
|
|
file=file_desc,
|
||
|
|
serialized_start=None,
|
||
|
|
serialized_end=None)
|
||
|
|
for nested in desc.nested_types:
|
||
|
|
nested.containing_type = desc
|
||
|
|
for enum in desc.enum_types:
|
||
|
|
enum.containing_type = desc
|
||
|
|
scope[desc_proto.name] = desc
|
||
|
|
scope['.' + desc_name] = desc
|
||
|
|
self._descriptors[desc_name] = desc
|
||
|
|
return desc
|
||
|
|
|
||
|
|
def _ConvertEnumDescriptor(self, enum_proto, package=None, file_desc=None,
|
||
|
|
containing_type=None, scope=None):
|
||
|
|
"""Make a protobuf EnumDescriptor given an EnumDescriptorProto protobuf.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
enum_proto: The descriptor_pb2.EnumDescriptorProto protobuf message.
|
||
|
|
package: Optional package name for the new message EnumDescriptor.
|
||
|
|
file_desc: The file containing the enum descriptor.
|
||
|
|
containing_type: The type containing this enum.
|
||
|
|
scope: Scope containing available types.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
The added descriptor
|
||
|
|
"""
|
||
|
|
|
||
|
|
if package:
|
||
|
|
enum_name = '.'.join((package, enum_proto.name))
|
||
|
|
else:
|
||
|
|
enum_name = enum_proto.name
|
||
|
|
|
||
|
|
if file_desc is None:
|
||
|
|
file_name = None
|
||
|
|
else:
|
||
|
|
file_name = file_desc.name
|
||
|
|
|
||
|
|
values = [self._MakeEnumValueDescriptor(value, index)
|
||
|
|
for index, value in enumerate(enum_proto.value)]
|
||
|
|
desc = descriptor.EnumDescriptor(name=enum_proto.name,
|
||
|
|
full_name=enum_name,
|
||
|
|
filename=file_name,
|
||
|
|
file=file_desc,
|
||
|
|
values=values,
|
||
|
|
containing_type=containing_type,
|
||
|
|
options=enum_proto.options)
|
||
|
|
scope[enum_proto.name] = desc
|
||
|
|
scope['.%s' % enum_name] = desc
|
||
|
|
self._enum_descriptors[enum_name] = desc
|
||
|
|
return desc
|
||
|
|
|
||
|
|
def _MakeFieldDescriptor(self, field_proto, message_name, index,
|
||
|
|
is_extension=False):
|
||
|
|
"""Creates a field descriptor from a FieldDescriptorProto.
|
||
|
|
|
||
|
|
For message and enum type fields, this method will do a look up
|
||
|
|
in the pool for the appropriate descriptor for that type. If it
|
||
|
|
is unavailable, it will fall back to the _source function to
|
||
|
|
create it. If this type is still unavailable, construction will
|
||
|
|
fail.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
field_proto: The proto describing the field.
|
||
|
|
message_name: The name of the containing message.
|
||
|
|
index: Index of the field
|
||
|
|
is_extension: Indication that this field is for an extension.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
An initialized FieldDescriptor object
|
||
|
|
"""
|
||
|
|
|
||
|
|
if message_name:
|
||
|
|
full_name = '.'.join((message_name, field_proto.name))
|
||
|
|
else:
|
||
|
|
full_name = field_proto.name
|
||
|
|
|
||
|
|
return descriptor.FieldDescriptor(
|
||
|
|
name=field_proto.name,
|
||
|
|
full_name=full_name,
|
||
|
|
index=index,
|
||
|
|
number=field_proto.number,
|
||
|
|
type=field_proto.type,
|
||
|
|
cpp_type=None,
|
||
|
|
message_type=None,
|
||
|
|
enum_type=None,
|
||
|
|
containing_type=None,
|
||
|
|
label=field_proto.label,
|
||
|
|
has_default_value=False,
|
||
|
|
default_value=None,
|
||
|
|
is_extension=is_extension,
|
||
|
|
extension_scope=None,
|
||
|
|
options=field_proto.options)
|
||
|
|
|
||
|
|
def _SetFieldTypes(self, desc_proto, scope):
|
||
|
|
"""Sets the field's type, cpp_type, message_type and enum_type.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
desc_proto: The message descriptor to update.
|
||
|
|
scope: Enclosing scope of available types.
|
||
|
|
"""
|
||
|
|
|
||
|
|
desc = scope[desc_proto.name]
|
||
|
|
for field_proto, field_desc in zip(desc_proto.field, desc.fields):
|
||
|
|
if field_proto.type_name:
|
||
|
|
type_name = field_proto.type_name
|
||
|
|
if type_name not in scope:
|
||
|
|
type_name = '.' + type_name
|
||
|
|
desc = scope[type_name]
|
||
|
|
else:
|
||
|
|
desc = None
|
||
|
|
|
||
|
|
if not field_proto.HasField('type'):
|
||
|
|
if isinstance(desc, descriptor.Descriptor):
|
||
|
|
field_proto.type = descriptor.FieldDescriptor.TYPE_MESSAGE
|
||
|
|
else:
|
||
|
|
field_proto.type = descriptor.FieldDescriptor.TYPE_ENUM
|
||
|
|
|
||
|
|
field_desc.cpp_type = descriptor.FieldDescriptor.ProtoTypeToCppProtoType(
|
||
|
|
field_proto.type)
|
||
|
|
|
||
|
|
if (field_proto.type == descriptor.FieldDescriptor.TYPE_MESSAGE
|
||
|
|
or field_proto.type == descriptor.FieldDescriptor.TYPE_GROUP):
|
||
|
|
field_desc.message_type = desc
|
||
|
|
|
||
|
|
if field_proto.type == descriptor.FieldDescriptor.TYPE_ENUM:
|
||
|
|
field_desc.enum_type = desc
|
||
|
|
|
||
|
|
if field_proto.label == descriptor.FieldDescriptor.LABEL_REPEATED:
|
||
|
|
field_desc.has_default = False
|
||
|
|
field_desc.default_value = []
|
||
|
|
elif field_proto.HasField('default_value'):
|
||
|
|
field_desc.has_default = True
|
||
|
|
if (field_proto.type == descriptor.FieldDescriptor.TYPE_DOUBLE or
|
||
|
|
field_proto.type == descriptor.FieldDescriptor.TYPE_FLOAT):
|
||
|
|
field_desc.default_value = float(field_proto.default_value)
|
||
|
|
elif field_proto.type == descriptor.FieldDescriptor.TYPE_STRING:
|
||
|
|
field_desc.default_value = field_proto.default_value
|
||
|
|
elif field_proto.type == descriptor.FieldDescriptor.TYPE_BOOL:
|
||
|
|
field_desc.default_value = field_proto.default_value.lower() == 'true'
|
||
|
|
elif field_proto.type == descriptor.FieldDescriptor.TYPE_ENUM:
|
||
|
|
field_desc.default_value = field_desc.enum_type.values_by_name[
|
||
|
|
field_proto.default_value].index
|
||
|
|
else:
|
||
|
|
field_desc.default_value = int(field_proto.default_value)
|
||
|
|
else:
|
||
|
|
field_desc.has_default = False
|
||
|
|
field_desc.default_value = None
|
||
|
|
|
||
|
|
field_desc.type = field_proto.type
|
||
|
|
|
||
|
|
for nested_type in desc_proto.nested_type:
|
||
|
|
self._SetFieldTypes(nested_type, scope)
|
||
|
|
|
||
|
|
def _MakeEnumValueDescriptor(self, value_proto, index):
|
||
|
|
"""Creates a enum value descriptor object from a enum value proto.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
value_proto: The proto describing the enum value.
|
||
|
|
index: The index of the enum value.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
An initialized EnumValueDescriptor object.
|
||
|
|
"""
|
||
|
|
|
||
|
|
return descriptor.EnumValueDescriptor(
|
||
|
|
name=value_proto.name,
|
||
|
|
index=index,
|
||
|
|
number=value_proto.number,
|
||
|
|
options=value_proto.options,
|
||
|
|
type=None)
|
||
|
|
|
||
|
|
def _ExtractSymbols(self, desc_protos, package):
|
||
|
|
"""Pulls out all the symbols from descriptor protos.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
desc_protos: The protos to extract symbols from.
|
||
|
|
package: The package containing the descriptor type.
|
||
|
|
Yields:
|
||
|
|
A two element tuple of the type name and descriptor object.
|
||
|
|
"""
|
||
|
|
|
||
|
|
for desc_proto in desc_protos:
|
||
|
|
if package:
|
||
|
|
message_name = '.'.join((package, desc_proto.name))
|
||
|
|
else:
|
||
|
|
message_name = desc_proto.name
|
||
|
|
message_desc = self.FindMessageTypeByName(message_name)
|
||
|
|
yield (message_name, message_desc)
|
||
|
|
for symbol in self._ExtractSymbols(desc_proto.nested_type, message_name):
|
||
|
|
yield symbol
|
||
|
|
for symbol in self._ExtractEnums(desc_proto.enum_type, message_name):
|
||
|
|
yield symbol
|
||
|
|
|
||
|
|
def _ExtractEnums(self, enum_protos, package):
|
||
|
|
"""Pulls out all the symbols from enum protos.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
enum_protos: The protos to extract symbols from.
|
||
|
|
package: The package containing the enum type.
|
||
|
|
|
||
|
|
Yields:
|
||
|
|
A two element tuple of the type name and enum descriptor object.
|
||
|
|
"""
|
||
|
|
|
||
|
|
for enum_proto in enum_protos:
|
||
|
|
if package:
|
||
|
|
enum_name = '.'.join((package, enum_proto.name))
|
||
|
|
else:
|
||
|
|
enum_name = enum_proto.name
|
||
|
|
enum_desc = self.FindEnumTypeByName(enum_name)
|
||
|
|
yield (enum_name, enum_desc)
|
||
|
|
|
||
|
|
def _ExtractMessages(self, desc_protos):
|
||
|
|
"""Pulls out all the message protos from descriptos.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
desc_protos: The protos to extract symbols from.
|
||
|
|
|
||
|
|
Yields:
|
||
|
|
Descriptor protos.
|
||
|
|
"""
|
||
|
|
|
||
|
|
for desc_proto in desc_protos:
|
||
|
|
yield desc_proto
|
||
|
|
for message in self._ExtractMessages(desc_proto.nested_type):
|
||
|
|
yield message
|
||
|
|
|
||
|
|
def _GetDeps(self, file_proto):
|
||
|
|
"""Recursively finds dependencies for file protos.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
file_proto: The proto to get dependencies from.
|
||
|
|
|
||
|
|
Yields:
|
||
|
|
Each direct and indirect dependency.
|
||
|
|
"""
|
||
|
|
|
||
|
|
for dependency in file_proto.dependency:
|
||
|
|
dep_desc = self.FindFileByName(dependency)
|
||
|
|
dep_proto = descriptor_pb2.FileDescriptorProto.FromString(
|
||
|
|
dep_desc.serialized_pb)
|
||
|
|
yield dep_proto
|
||
|
|
for parent_dep in self._GetDeps(dep_proto):
|
||
|
|
yield parent_dep
|