univ.py 文件源码

def clone(self, value=noValue, tagSet=None, subtypeSpec=None,
              encoding=None, binValue=noValue, hexValue=noValue):
        """Create a copy of a |ASN.1| type or object.

        Any parameters to the *clone()* method will replace corresponding
        properties of the |ASN.1| object.

        Parameters
        ----------
        value : :class:`str`, :class:`bytes` or |ASN.1| object
            Initialization value to pass to new ASN.1 object instead of
            inheriting one from the caller.

        tagSet: :py:class:`~pyasn1.type.tag.TagSet`
            Object representing ASN.1 tag(s) to use in new object instead of inheriting from the caller

        subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection`
            Object representing ASN.1 subtype constraint(s) to use in new object instead of inheriting from the caller

        encoding: :py:class:`str`
            Unicode codec ID to encode/decode :class:`unicode` (Python 2)
            or :class:`str` (Python 3) the payload when |ASN.1|
            object is used in string context.

        binValue: :py:class:`str`
            Binary string initializer. Example: '10110011'.

        hexValue: :py:class:`str`
            Hexadecimal string initializer. Example: 'DEADBEEF'.

        Returns
        -------
        :
            new instance of |ASN.1| type/value
        """
        if self.isNoValue(value, binValue, hexValue):
            if self.isNoValue(tagSet, subtypeSpec, encoding):
                return self
            value = self._value
        if tagSet is None:
            tagSet = self._tagSet
        if subtypeSpec is None:
            subtypeSpec = self._subtypeSpec
        if encoding is None:
            encoding = self._encoding
        return self.__class__(
            value, tagSet, subtypeSpec, encoding, binValue, hexValue
        )