FreeOpcUa / python-opcua

    View = 1335532

class AttributeWriteMask(IntEnum):

    '''

    Define bits used to indicate which attributes are writable.

    :ivar None_:

    :vartype None_: 0

    :ivar AccessLevel:

    :vartype AccessLevel: 1

    :ivar ArrayDimensions:

    :vartype ArrayDimensions: 2

    :ivar BrowseName:

    :vartype BrowseName: 4

    :ivar ContainsNoLoops:

    :vartype ContainsNoLoops: 8

    :ivar DataType:

    :vartype DataType: 16

    :ivar Description:

    :vartype Description: 32

    :ivar DisplayName:

    :vartype DisplayName: 64

    :ivar EventNotifier:

    :vartype EventNotifier: 128

    :ivar Executable:

    :vartype Executable: 256

    :ivar Historizing:

    :vartype Historizing: 512

    :ivar InverseName:

    :vartype InverseName: 1024

    :ivar IsAbstract:

    :vartype IsAbstract: 2048

    :ivar MinimumSamplingInterval:

    :vartype MinimumSamplingInterval: 4096

    :ivar NodeClass:

    :vartype NodeClass: 8192

    :ivar NodeId:

    :vartype NodeId: 16384

    :ivar Symmetric:

    :vartype Symmetric: 32768

    :ivar UserAccessLevel:

    :vartype UserAccessLevel: 65536

    :ivar UserExecutable:

    :vartype UserExecutable: 131072

    :ivar UserWriteMask:

    :vartype UserWriteMask: 262144

    :ivar ValueRank:

    :vartype ValueRank: 524288

    :ivar WriteMask:

    :vartype WriteMask: 1048576

    :ivar ValueForVariableType:

    :vartype ValueForVariableType: 2097152

    '''

    None_ = 0

    AccessLevel = 1

    ArrayDimensions = 2

    BrowseName = 4

    ContainsNoLoops = 8

    DataType = 16

    Description = 32

    DisplayName = 64

    EventNotifier = 128

    Executable = 256

    Historizing = 512

    InverseName = 1024

    IsAbstract = 2048

    MinimumSamplingInterval = 4096

    NodeClass = 8192

    NodeId = 16384

    Symmetric = 32768

    UserAccessLevel = 65536

    UserExecutable = 131072

    UserWriteMask = 262144

    ValueRank = 524288

    WriteMask = 1048576

    ValueForVariableType = 2097152

class BrowseDirection(IntEnum):

    Any UA object packed as an ExtensionObject

    :ivar TypeId:

    :vartype TypeId: NodeId

    :ivar Body:

    :vartype Body: bytes

    '''

    def __init__(self):

        self.TypeId = NodeId()

        self.Encoding = 0

        self.Body = b''

        self._freeze = True

    def to_binary(self):

        packet = []

        if self.Body:

            self.Encoding |= (1 << 0)

        packet.append(self.TypeId.to_binary())

        packet.append(pack_uatype('UInt8', self.Encoding))

        if self.Body:

            packet.append(pack_uatype('ByteString', self.Body))

        return b''.join(packet)

    @staticmethod

    def from_binary(data):

        obj = ExtensionObject()

        obj.TypeId = NodeId.from_binary(data)

        obj.Encoding = unpack_uatype('UInt8', data)

        if obj.Encoding & (1 << 0):

            obj.Body = unpack_uatype('ByteString', data)

        return obj

    @staticmethod

    def from_object(obj):

        ext = ExtensionObject()

        oid = getattr(ObjectIds, "{}_Encoding_DefaultBinary".format(obj.__class__.__name__))

        ext.TypeId = FourByteNodeId(oid)

        ext.Body = obj.to_binary()

        return ext

    def __str__(self):

        return 'ExtensionObject(' + 'TypeId:' + str(self.TypeId) + ', ' + \

            'Encoding:' + str(self.Encoding) + ', ' + str(len(self.Body)) + ' bytes)'

    __repr__ = __str__

class VariantType(Enum):

    '''

    The possible types of a variant.

    :ivar Null:

    :ivar Boolean:

    :ivar SByte:

    :ivar Byte:

    :ivar Int16:

    :ivar UInt16:

    :ivar Int32:

    :ivar UInt32:

    :ivar Int64:

    :ivar UInt64:

    :ivar Float: