Frontend.Preprocessor
Preprocessor for handling include directives
val location_of_position : Stdlib.Lexing.position -> Middle.Location.t
val location_span_of_positions :
(Stdlib.Lexing.position * Stdlib.Lexing.position) ->
Middle.Location_span.t
Update the lex_start_p the lexing buffers on the stack. This solves an issue where a parser which started with one lexbuf but is finishing with another can have the wrong information
val add_comment : Ast.comment_type -> unit
val get_comments : unit -> Ast.comment_type list
Restore to a previous lexing buffer (assumes that one exists) and updates positions accordingly.