pyebnf/operator.py
def postfix_to_optree(nodes):
  """Convert a list of nodes in postfix order to an Optree."""
  while len(nodes) > 1:
    nodes = _reduce(nodes)

  if len(nodes) == 0:
    raise OperatorError("Empty node list")

  node = nodes[0]

  if isinstance(node, OperatorNode):
    raise OperatorError("Operator without operands")

  if isinstance(node, OptreeNode):
    return node

  return OptreeNode(None, (node, ))
def postfix_to_optree(nodes):
  while len(nodes) > 1:
    nodes = _reduce(nodes)

  if len(nodes) == 0:
    raise OperatorError("Empty node list")

  node = nodes[0]

  if isinstance(node, OperatorNode):
    raise OperatorError("Operator without operands")

  if isinstance(node, OptreeNode):
    return node

  return OptreeNode(None, (node, ))
def postfix_to_optree ( nodes ) : while len ( nodes ) > 1 : nodes = _reduce ( nodes ) if len ( nodes ) == 0 : raise OperatorError ( "Empty node list" ) node = nodes [ 0 ] if isinstance ( node , OperatorNode ) : raise OperatorError ( "Operator without operands" ) if isinstance ( node , OptreeNode ) : return node return OptreeNode ( None , ( node , ) )
Convert a list of nodes in postfix order to an Optree.
Convert a list of nodes in postfix order to an Optree .