val parse :
  (module Qsp_syntax.S.Analyzer with type Location.t = 'a) ->
  Lexbuf.t ->
  ('a * Qsp_syntax.Report.t list, Qsp_syntax.Report.t) Result.t
(** Read the source and build a analyzis over it. 

This method make the link between the source file and how to read it
(encoding…) and the AST we want to build. *)