125   def Clone(self):  member in Cursor
156   def Clone(self):  member in Token
159     return Token(self.start.Clone(), self.end.Clone(), self.value,
189   start = cursor.Clone()
298   start = pos.Clone()
589   def Clone(self):  member in Env
660     RunAtomicCode(env.Clone(), node.atomic_code, result)
676       new_env = env.Clone()
686       RunCode(env.Clone(), node.then_branch, output)
688       RunCode(env.Clone(), node.else_branch, output)
695     RunCode(env.Clone(), node, output)