val is_module_name : Approx_tokens.token -> bool
val is_ident_name : Approx_tokens.token -> bool
val transform_let : Approx_tokens.token array -> Approx_tokens.token array
val transform_fun : Approx_tokens.token array -> Approx_tokens.token array
val transform_match : Approx_tokens.token array -> Approx_tokens.token array
val transform_cons : Approx_tokens.token array -> Approx_tokens.token array
val transform_type : Approx_tokens.token array -> Approx_tokens.token array
val transform : (Approx_tokens.token * 'a) list -> (Approx_tokens.token * 'a) list