def _trans_branches(self, ast):
ret = Ast('oneof')
ret.add_children_by_id(ast, 'branch')
children = ret.get_children()
if len(children) != 1:
return ret
else:
return children[0]
def _trans_branch(self, ast):
ret = Ast('sequence')
children = ast.get_children()
prev = None
for child in children:
if child.id == 'card':
card_child = child.get_children()[0]
cardinality = {
'?': 'optional',
'+': 'one-or-more',
'*': 'many'
}[card_child.value]
prev.set_attr('cardinality', cardinality)
else:
if child.id == "keyword":
child = Ast('keyword', child.value)
ret.add_child(child)
prev = child
if len(ret.get_children()) != 1:
return ret
else:
return prev