Python type_checkers.GetTypeChecker方法代码示例

# 需要导入模块: from google.protobuf.internal import type_checkers [as 别名]
# 或者: from google.protobuf.internal.type_checkers import GetTypeChecker [as 别名]
def _GetInitializeDefaultForMap(field):
  if field.label != _FieldDescriptor.LABEL_REPEATED:
    raise ValueError('map_entry set on non-repeated field %s' % (
        field.name))
  fields_by_name = field.message_type.fields_by_name
  key_checker = type_checkers.GetTypeChecker(fields_by_name['key'])

  value_field = fields_by_name['value']
  if _IsMessageMapField(field):
    def MakeMessageMapDefault(message):
      return containers.MessageMap(
          message._listener_for_children, value_field.message_type, key_checker,
          field.message_type)
    return MakeMessageMapDefault
  else:
    value_checker = type_checkers.GetTypeChecker(value_field)
    def MakePrimitiveMapDefault(message):
      return containers.ScalarMap(
          message._listener_for_children, key_checker, value_checker,
          field.message_type)
    return MakePrimitiveMapDefault 

# 需要导入模块: from google.protobuf.internal import type_checkers [as 别名]
# 或者: from google.protobuf.internal.type_checkers import GetTypeChecker [as 别名]
def __setitem__(self, extension_handle, value):
    """If extension_handle specifies a non-repeated, scalar extension
    field, sets the value of that field.
    """

    _VerifyExtensionHandle(self._extended_message, extension_handle)

    if (extension_handle.label == _FieldDescriptor.LABEL_REPEATED or
        extension_handle.cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE):
      raise TypeError(
          'Cannot assign to extension "%s" because it is a repeated or '
          'composite type.' % extension_handle.full_name)

    # It's slightly wasteful to lookup the type checker each time,
    # but we expect this to be a vanishingly uncommon case anyway.
    type_checker = type_checkers.GetTypeChecker(extension_handle)
    # pylint: disable=protected-access
    self._extended_message._fields[extension_handle] = (
        type_checker.CheckValue(value))
    self._extended_message._Modified() 

# 需要导入模块: from google.protobuf.internal import type_checkers [as 别名]
# 或者: from google.protobuf.internal.type_checkers import GetTypeChecker [as 别名]
def _GetInitializeDefaultForMap(field):
  if field.label != _FieldDescriptor.LABEL_REPEATED:
    raise ValueError('map_entry set on non-repeated field %s' % (
        field.name))
  fields_by_name = field.message_type.fields_by_name
  key_checker = type_checkers.GetTypeChecker(fields_by_name['key'])

  value_field = fields_by_name['value']
  if _IsMessageMapField(field):
    def MakeMessageMapDefault(message):
      return containers.MessageMap(
          message._listener_for_children, value_field.message_type, key_checker)
    return MakeMessageMapDefault
  else:
    value_checker = type_checkers.GetTypeChecker(value_field)
    def MakePrimitiveMapDefault(message):
      return containers.ScalarMap(
          message._listener_for_children, key_checker, value_checker)
    return MakePrimitiveMapDefault 

# 需要导入模块: from google.protobuf.internal import type_checkers [as 别名]
# 或者: from google.protobuf.internal.type_checkers import GetTypeChecker [as 别名]
def __setitem__(self, extension_handle, value):
    """If extension_handle specifies a non-repeated, scalar extension
    field, sets the value of that field.
    """

    _VerifyExtensionHandle(self._extended_message, extension_handle)

    if (extension_handle.label == _FieldDescriptor.LABEL_REPEATED or
        extension_handle.cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE):
      raise TypeError(
          'Cannot assign to extension "%s" because it is a repeated or '
          'composite type.' % extension_handle.full_name)

    # It's slightly wasteful to lookup the type checker each time,
    # but we expect this to be a vanishingly uncommon case anyway.
    type_checker = type_checkers.GetTypeChecker(
        extension_handle)
    # pylint: disable=protected-access
    self._extended_message._fields[extension_handle] = (
      type_checker.CheckValue(value))
    self._extended_message._Modified() 

# 需要导入模块: from google.protobuf.internal import type_checkers [as 别名]
# 或者: from google.protobuf.internal.type_checkers import GetTypeChecker [as 别名]
def __setitem__(self, extension_handle, value):
    """If extension_handle specifies a non-repeated, scalar extension
    field, sets the value of that field.
    """

    _VerifyExtensionHandle(self._extended_message, extension_handle)

    if (extension_handle.label == FieldDescriptor.LABEL_REPEATED or
        extension_handle.cpp_type == FieldDescriptor.CPPTYPE_MESSAGE):
      raise TypeError(
          'Cannot assign to extension "%s" because it is a repeated or '
          'composite type.' % extension_handle.full_name)

    # It's slightly wasteful to lookup the type checker each time,
    # but we expect this to be a vanishingly uncommon case anyway.
    type_checker = type_checkers.GetTypeChecker(extension_handle)
    # pylint: disable=protected-access
    self._extended_message._fields[extension_handle] = (
        type_checker.CheckValue(value))
    self._extended_message._Modified() 

# 需要导入模块: from google.protobuf.internal import type_checkers [as 别名]
# 或者: from google.protobuf.internal.type_checkers import GetTypeChecker [as 别名]
def _DefaultValueConstructorForField(field):
  """Returns a function which returns a default value for a field.

  Args:
    field: FieldDescriptor object for this field.

  The returned function has one argument:
    message: Message instance containing this field, or a weakref proxy
      of same.

  That function in turn returns a default value for this field.  The default
    value may refer back to |message| via a weak reference.
  """

  if _IsMapField(field):
    return _GetInitializeDefaultForMap(field)

  if field.label == _FieldDescriptor.LABEL_REPEATED:
    if field.has_default_value and field.default_value != []:
      raise ValueError('Repeated field default value not empty list: %s' % (
          field.default_value))
    if field.cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE:
      # We can't look at _concrete_class yet since it might not have
      # been set.  (Depends on order in which we initialize the classes).
      message_type = field.message_type
      def MakeRepeatedMessageDefault(message):
        return containers.RepeatedCompositeFieldContainer(
            message._listener_for_children, field.message_type)
      return MakeRepeatedMessageDefault
    else:
      type_checker = type_checkers.GetTypeChecker(field)
      def MakeRepeatedScalarDefault(message):
        return containers.RepeatedScalarFieldContainer(
            message._listener_for_children, type_checker)
      return MakeRepeatedScalarDefault

  if field.cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE:
    # _concrete_class may not yet be initialized.
    message_type = field.message_type
    def MakeSubMessageDefault(message):
      result = message_type._concrete_class()
      result._SetListener(
          _OneofListener(message, field)
          if field.containing_oneof is not None
          else message._listener_for_children)
      return result
    return MakeSubMessageDefault

  def MakeScalarDefault(message):
    # TODO(protobuf-team): This may be broken since there may not be
    # default_value.  Combine with has_default_value somehow.
    return field.default_value
  return MakeScalarDefault 

# 需要导入模块: from google.protobuf.internal import type_checkers [as 别名]
# 或者: from google.protobuf.internal.type_checkers import GetTypeChecker [as 别名]
def _AddPropertiesForNonRepeatedScalarField(field, cls):
  """Adds a public property for a nonrepeated, scalar protocol message field.
  Clients can use this property to get and directly set the value of the field.
  Note that when the client sets the value of a field by using this property,
  all necessary "has" bits are set as a side-effect, and we also perform
  type-checking.

  Args:
    field: A FieldDescriptor for this field.
    cls: The class we're constructing.
  """
  proto_field_name = field.name
  property_name = _PropertyName(proto_field_name)
  type_checker = type_checkers.GetTypeChecker(field)
  default_value = field.default_value
  valid_values = set()
  is_proto3 = field.containing_type.syntax == "proto3"

  def getter(self):
    # TODO(protobuf-team): This may be broken since there may not be
    # default_value.  Combine with has_default_value somehow.
    return self._fields.get(field, default_value)
  getter.__module__ = None
  getter.__doc__ = 'Getter for %s.' % proto_field_name

  clear_when_set_to_default = is_proto3 and not field.containing_oneof

  def field_setter(self, new_value):
    # pylint: disable=protected-access
    # Testing the value for truthiness captures all of the proto3 defaults
    # (0, 0.0, enum 0, and False).
    new_value = type_checker.CheckValue(new_value)
    if clear_when_set_to_default and not new_value:
      self._fields.pop(field, None)
    else:
      self._fields[field] = new_value
    # Check _cached_byte_size_dirty inline to improve performance, since scalar
    # setters are called frequently.
    if not self._cached_byte_size_dirty:
      self._Modified()

  if field.containing_oneof:
    def setter(self, new_value):
      field_setter(self, new_value)
      self._UpdateOneofState(field)
  else:
    setter = field_setter

  setter.__module__ = None
  setter.__doc__ = 'Setter for %s.' % proto_field_name

  # Add a property to encapsulate the getter/setter.
  doc = 'Magic attribute generated for "%s" proto field.' % proto_field_name
  setattr(cls, property_name, property(getter, setter, doc=doc))