lib/ungrammar/ungrammar.ungram

/// ungrammar for ungrammar
Grammar =
  Node *

Node =
  name:'ident' '=' Rule

Rule =
  'ident'
| 'token_ident'
| Rule *
| Rule ( '|' Rule) *
| Rule '?'
| Rule '*'
| '(' Rule ')'
| label:'ident' ':' Rule