ConceptPortal-public/rsconcept/frontend/src/components/RefsInput/parse/refsText.grammar

@precedence {
  p1
  p2
}

@top Text { textItem* }

@skip { space }

@tokens {
  space { @whitespace+ }

  Offset { $[-]?$[1-9]$[0-9]* }
  Global { $[XCSDATFPR]$[1-9]$[0-9]* }

  Word { ![@{|} \t\n]+ }

  Gram { $[-a-zA-Z0-9]+ } 

  @precedence { Word, space }
}

textItem { 
  !p1 ref |
  !p2 Word
}

ref {
  RefEntity |
  RefSyntactic
}

RefEntity {
  "@{" Global "|" grams "}"
}

RefSyntactic {
  "@{" Offset "|" Nominal "}"
}

Nominal { Word+ }

grams {
  Gram |
  Gram "," grams
}

@detectDelim

@external propSource highlighting from "./highlight.ts"