module Parser: Parse_intf.S 
    with type token := token
     and type statement := statement
The Parser module for the language.
Main interface
type 
The type of token consumed by the parser.
type 
The type of top-level declarations returned by the parser.
exception Error
Exception raised by the parser when it encounters an error.
val file : (Lexing.lexbuf -> token) ->
       Lexing.lexbuf -> statement list
A function that parses an entire file, i.e until the end-of-file token,
      and return the list of parsed statements.
val input : (Lexing.lexbuf -> token) ->
       Lexing.lexbuf -> statement option
A function to parse a single statement. Reutnrs None if it encounters
      the end-of-file token. Used for incremental parsing.
Menhir incremental interface
module MenhirInterpreter: sig .. end
module Incremental: sig .. end