Nonterminal (p.lrgrep.0.9.doc.kernel.Kernel.Info.Nonterminal)

include INDEXED with type 'g n = 'g nonterminal

Sourcetype 'g n = 'g nonterminal

Sourceval cardinal : 'g grammar -> 'g n Fix.Indexing.cardinal

Sourceval of_int : 'g grammar -> int -> 'g n Fix.Indexing.index

Sourceval to_string : 'g grammar -> 'g n Fix.Indexing.index -> string

Converts a nonterminal index to its name string

Sourceval all : 'g grammar -> 'g n Utils.Misc.indexset

all g is the set of all non-terminals in grammar g

Sourceval kind : 'g grammar -> 'g n Fix.Indexing.index -> [ `REGULAR | `START ]

Returns `REGULAR for ordinary non-terminals and `START for entrypoint (start) non-terminals

Sourceval semantic_value : 'g grammar -> 'g n Fix.Indexing.index -> string option

semantic_value nt is Some typ if nonterminal nt has a semantic value of type typ, or None for unparameterized non-terminals.

Sourceval nullable : 'g grammar -> 'g n Fix.Indexing.index -> bool

nullable nt is true if nonterminal nt can derive the empty string

Source

val first : 
  'g grammar ->
  'g n Fix.Indexing.index ->
  'g terminal Utils.Misc.indexset

first nt is the set of terminals that can begin a string derived from nonterminal nt

Source

val find : 
  'g grammar ->
  ?approx:int ->
  string ->
  ('g n Fix.Indexing.index,
    [ `Mangled of 'g n Fix.Indexing.index
    | `Dym of (int * string * 'g n Fix.Indexing.index) list ])
    Stdlib.result

Finds a nonterminal by name. Checks both regular and mangled names. Returns disambiguation suggestions when the name is not found and approx > 0.