Handles errors in Parse.parse produced by the menhir in
incremental parser.
report is the main function.
val show : ('a ‑> string) ‑> 'a buffer ‑> stringval exact_pos : (Lexing.position * 'a) buffer ‑> Lexing.positionval area_pos : (Lexing.position * Lexing.position) buffer ‑> Lexing.position * Lexing.positionval stack : 'a Parser.MenhirInterpreter.checkpoint ‑> Parser.MenhirInterpreter.stackval state : 'a Parser.MenhirInterpreter.checkpoint ‑> intval element : 'a Parser.MenhirInterpreter.checkpoint ‑> int ‑> Parser.MenhirInterpreter.elementval range : string ‑> Parser.MenhirInterpreter.element ‑> stringval fragment : string ‑> 'a Parser.MenhirInterpreter.checkpoint ‑> string ‑> stringval fragments : string ‑> 'a Parser.MenhirInterpreter.checkpoint ‑> string ‑> stringval report : string ‑> (Lexing.position * Lexing.position) buffer ‑> 'a Parser.MenhirInterpreter.checkpoint ‑> bool ‑> string