Renamed google.protobuf to protobuf26

third_party/google/protobuf/descriptor_pool.py

Index: third_party/google/protobuf/descriptor_pool.py
diff --git a/third_party/google/protobuf/descriptor_pool.py b/third_party/google/protobuf/descriptor_pool.py
deleted file mode 100644
index 372f458f551e2ffb20eecb795a80cbfc93066264..0000000000000000000000000000000000000000
--- a/third_party/google/protobuf/descriptor_pool.py
+++ /dev/null
@@ -1,643 +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.
-
-"""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.
-
-If you want to get a Python class for the specified proto, use the
-helper functions inside google.protobuf.message_factory
-directly instead of this class.
-"""
-
-__author__ = 'matthewtoia@google.com (Matt Toia)'
-
-import sys
-
-from google.protobuf import descriptor
-from google.protobuf import descriptor_database
-from google.protobuf import text_encoding
-
-
-def _NormalizeFullyQualifiedName(name):
-  """Remove leading period from fully-qualified type name.
-
-  Due to b/13860351 in descriptor_database.py, types in the root namespace are
-  generated with a leading period. This function removes that prefix.
-
-  Args:
-    name: A str, the fully-qualified symbol name.
-
-  Returns:
-    A str, the normalized fully-qualified symbol name.
-  """
-  return name.lstrip('.')
-
-
-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 AddDescriptor(self, desc):
-    """Adds a Descriptor to the pool, non-recursively.
-
-    If the Descriptor contains nested messages or enums, the caller must
-    explicitly register them. This method also registers the FileDescriptor
-    associated with the message.
-
-    Args:
-      desc: A Descriptor.
-    """
-    if not isinstance(desc, descriptor.Descriptor):
-      raise TypeError('Expected instance of descriptor.Descriptor.')
-
-    self._descriptors[desc.full_name] = desc
-    self.AddFileDescriptor(desc.file)
-
-  def AddEnumDescriptor(self, enum_desc):
-    """Adds an EnumDescriptor to the pool.
-
-    This method also registers the FileDescriptor associated with the message.
-
-    Args:
-      enum_desc: An EnumDescriptor.
-    """
-
-    if not isinstance(enum_desc, descriptor.EnumDescriptor):
-      raise TypeError('Expected instance of descriptor.EnumDescriptor.')
-
-    self._enum_descriptors[enum_desc.full_name] = enum_desc
-    self.AddFileDescriptor(enum_desc.file)
-
-  def AddFileDescriptor(self, file_desc):
-    """Adds a FileDescriptor to the pool, non-recursively.
-
-    If the FileDescriptor contains messages or enums, the caller must explicitly
-    register them.
-
-    Args:
-      file_desc: A FileDescriptor.
-    """
-
-    if not isinstance(file_desc, descriptor.FileDescriptor):
-      raise TypeError('Expected instance of descriptor.FileDescriptor.')
-    self._file_descriptors[file_desc.name] = file_desc
-
-  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:
-      return self._file_descriptors[file_name]
-    except KeyError:
-      pass
-
-    try:
-      file_proto = self._internal_db.FindFileByName(file_name)
-    except KeyError:
-      _, error, _ = sys.exc_info()  #PY25 compatible for GAE.
-      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.
-    """
-
-    symbol = _NormalizeFullyQualifiedName(symbol)
-    try:
-      return self._descriptors[symbol].file
-    except KeyError:
-      pass
-
-    try:
-      return self._enum_descriptors[symbol].file
-    except KeyError:
-      pass
-
-    try:
-      file_proto = self._internal_db.FindFileContainingSymbol(symbol)
-    except KeyError:
-      _, error, _ = sys.exc_info()  #PY25 compatible for GAE.
-      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 = _NormalizeFullyQualifiedName(full_name)
-    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 = _NormalizeFullyQualifiedName(full_name)
-    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:
-      built_deps = list(self._GetDeps(file_proto.dependency))
-      direct_deps = [self.FindFileByName(n) for n in file_proto.dependency]
-
-      file_descriptor = descriptor.FileDescriptor(
-          name=file_proto.name,
-          package=file_proto.package,
-          options=file_proto.options,
-          serialized_pb=file_proto.SerializeToString(),
-          dependencies=direct_deps)
-      scope = {}
-
-      # This loop extracts all the message and enum types from all the
-      # dependencoes of the file_proto. This is necessary to create the
-      # scope of available message types when defining the passed in
-      # file proto.
-      for dependency in built_deps:
-        scope.update(self._ExtractSymbols(
-            dependency.message_types_by_name.values()))
-        scope.update((_PrefixWithDot(enum.full_name), enum)
-                     for enum in dependency.enum_types_by_name.values())
-
-      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:
-        file_descriptor.enum_types_by_name[enum_type.name] = (
-            self._ConvertEnumDescriptor(enum_type, file_proto.package,
-                                        file_descriptor, None, scope))
-
-      for index, extension_proto in enumerate(file_proto.extension):
-        extension_desc = self.MakeFieldDescriptor(
-            extension_proto, file_proto.package, index, is_extension=True)
-        extension_desc.containing_type = self._GetTypeFromScope(
-            file_descriptor.package, extension_proto.extendee, scope)
-        self.SetFieldType(extension_proto, extension_desc,
-                          file_descriptor.package, scope)
-        file_descriptor.extensions_by_name[extension_desc.name] = extension_desc
-
-      for desc_proto in file_proto.message_type:
-        self.SetAllFieldTypes(file_proto.package, desc_proto, scope)
-
-      if file_proto.package:
-        desc_proto_prefix = _PrefixWithDot(file_proto.package)
-      else:
-        desc_proto_prefix = ''
-
-      for desc_proto in file_proto.message_type:
-        desc = self._GetTypeFromScope(desc_proto_prefix, desc_proto.name, scope)
-        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, index, is_extension=True)
-        for index, extension in enumerate(desc_proto.extension)]
-    oneofs = [
-        descriptor.OneofDescriptor(desc.name, '.'.join((desc_name, desc.name)),
-                                   index, None, [])
-        for index, desc in enumerate(desc_proto.oneof_decl)]
-    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,
-        oneofs=oneofs,
-        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
-    for field_index, field_desc in enumerate(desc_proto.field):
-      if field_desc.HasField('oneof_index'):
-        oneof_index = field_desc.oneof_index
-        oneofs[oneof_index].fields.append(fields[field_index])
-        fields[field_index].containing_oneof = oneofs[oneof_index]
-
-    scope[_PrefixWithDot(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['.%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 SetAllFieldTypes(self, package, desc_proto, scope):
-    """Sets all the descriptor's fields's types.
-
-    This method also sets the containing types on any extensions.
-
-    Args:
-      package: The current package of desc_proto.
-      desc_proto: The message descriptor to update.
-      scope: Enclosing scope of available types.
-    """
-
-    package = _PrefixWithDot(package)
-
-    main_desc = self._GetTypeFromScope(package, desc_proto.name, scope)
-
-    if package == '.':
-      nested_package = _PrefixWithDot(desc_proto.name)
-    else:
-      nested_package = '.'.join([package, desc_proto.name])
-
-    for field_proto, field_desc in zip(desc_proto.field, main_desc.fields):
-      self.SetFieldType(field_proto, field_desc, nested_package, scope)
-
-    for extension_proto, extension_desc in (
-        zip(desc_proto.extension, main_desc.extensions)):
-      extension_desc.containing_type = self._GetTypeFromScope(
-          nested_package, extension_proto.extendee, scope)
-      self.SetFieldType(extension_proto, extension_desc, nested_package, scope)
-
-    for nested_type in desc_proto.nested_type:
-      self.SetAllFieldTypes(nested_package, nested_type, scope)
-
-  def SetFieldType(self, field_proto, field_desc, package, scope):
-    """Sets the field's type, cpp_type, message_type and enum_type.
-
-    Args:
-      field_proto: Data about the field in proto format.
-      field_desc: The descriptor to modiy.
-      package: The package the field's container is in.
-      scope: Enclosing scope of available types.
-    """
-    if field_proto.type_name:
-      desc = self._GetTypeFromScope(package, field_proto.type_name, scope)
-    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_value = False
-      field_desc.default_value = []
-    elif field_proto.HasField('default_value'):
-      field_desc.has_default_value = 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
-      elif field_proto.type == descriptor.FieldDescriptor.TYPE_BYTES:
-        field_desc.default_value = text_encoding.CUnescape(
-            field_proto.default_value)
-      else:
-        field_desc.default_value = int(field_proto.default_value)
-    else:
-      field_desc.has_default_value = False
-      field_desc.default_value = None
-
-    field_desc.type = field_proto.type
-
-  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, descriptors):
-    """Pulls out all the symbols from descriptor protos.
-
-    Args:
-      descriptors: The messages to extract descriptors from.
-    Yields:
-      A two element tuple of the type name and descriptor object.
-    """
-
-    for desc in descriptors:
-      yield (_PrefixWithDot(desc.full_name), desc)
-      for symbol in self._ExtractSymbols(desc.nested_types):
-        yield symbol
-      for enum in desc.enum_types:
-        yield (_PrefixWithDot(enum.full_name), enum)
-
-  def _GetDeps(self, dependencies):
-    """Recursively finds dependencies for file protos.
-
-    Args:
-      dependencies: The names of the files being depended on.
-
-    Yields:
-      Each direct and indirect dependency.
-    """
-
-    for dependency in dependencies:
-      dep_desc = self.FindFileByName(dependency)
-      yield dep_desc
-      for parent_dep in dep_desc.dependencies:
-        yield parent_dep
-
-  def _GetTypeFromScope(self, package, type_name, scope):
-    """Finds a given type name in the current scope.
-
-    Args:
-      package: The package the proto should be located in.
-      type_name: The name of the type to be found in the scope.
-      scope: Dict mapping short and full symbols to message and enum types.
-
-    Returns:
-      The descriptor for the requested type.
-    """
-    if type_name not in scope:
-      components = _PrefixWithDot(package).split('.')
-      while components:
-        possible_match = '.'.join(components + [type_name])
-        if possible_match in scope:
-          type_name = possible_match
-          break
-        else:
-          components.pop(-1)
-    return scope[type_name]
-
-
-def _PrefixWithDot(name):
-  return name if name.startswith('.') else '.%s' % name