text: # This is an automatically generated file.
  # DO NOT EDIT or your changes may be overwritten
  import base64
  from xdrlib import Packer, Unpacker
  
  from .base import *
  from .trust_line_entry_v1 import TrustLineEntryV1
  from ..exceptions import ValueError
  
  __all__ = ["TrustLineEntryExt"]
  
  
  class TrustLineEntryExt:
      """
      XDR Source Code
      ----------------------------------------------------------------
      union switch (int v)
          {
          case 0:
              void;
          case 1:
              struct
              {
                  Liabilities liabilities;
  
                  union switch (int v)
                  {
                  case 0:
                      void;
                  }
                  ext;
              } v1;
          }
      ----------------------------------------------------------------
      """
  
      def __init__(
          self,
          v: int,
          v1: TrustLineEntryV1 = None,
      ) -> None:
          self.v = v
          self.v1 = v1
  
      def pack(self, packer: Packer) -> None:
          Integer(self.v).pack(packer)
          if self.v == 0:
              return
          if self.v == 1:
              if self.v1 is None:
                  raise ValueError("v1 should not be None.")
              self.v1.pack(packer)
              return
          raise ValueError("Invalid v.")
  
      @classmethod
      def unpack(cls, unpacker: Unpacker) -> "TrustLineEntryExt":
          v = Integer.unpack(unpacker)
          if v == 0:
              return cls(v)
          if v == 1:
              v1 = TrustLineEntryV1.unpack(unpacker)
              if v1 is None:
                  raise ValueError("v1 should not be None.")
              return cls(v, v1=v1)
          raise ValueError("Invalid v.")
  
      def to_xdr_bytes(self) -> bytes:
          packer = Packer()
          self.pack(packer)
          return packer.get_buffer()
  
      @classmethod
      def from_xdr_bytes(cls, xdr: bytes) -> "TrustLineEntryExt":
          unpacker = Unpacker(xdr)
          return cls.unpack(unpacker)
  
      def to_xdr(self) -> str:
          xdr_bytes = self.to_xdr_bytes()
          return base64.b64encode(xdr_bytes).decode()
  
      @classmethod
      def from_xdr(cls, xdr: str) -> "TrustLineEntryExt":
          xdr_bytes = base64.b64decode(xdr.encode())
          return cls.from_xdr_bytes(xdr_bytes)
  
      def __eq__(self, other: object):
          if not isinstance(other, self.__class__):
              return NotImplemented
          return self.v == other.v and self.v1 == other.v1
  
      def __str__(self):
          out = []
          out.append(f"v={self.v}")
          out.append(f"v1={self.v1}") if self.v1 is not None else None
          return f"<TrustLineEntryExt {[', '.join(out)]}>"
  