既に見た修飾子にマッチしない＋排他的な修飾子

ModifersWithScope.hopeg

S = Modifiers(!"", "") !.;
Modifiers(AlreadyLooked, Scope) = (!AlreadyLooked) (
    &(Scope) Token("public") Modifiers(AlreadyLooked / "public", "public")
  / &(Scope) Token("protected") Modifiers(AlreadyLooked / "protected", "protected")
  / &(Scope) Token("private") Modifiers(AlreadyLooked / "private", "private")
  / Token("static") Modifiers(AlreadyLooked / "static", Scope)
  / Token("final") Modifiers(AlreadyLooked / "final", Scope)
  / ""
);
Token(t) = t Spacing;
Spacing = " "*;