Quellcode-Bibliothek

^© Kompilation durch diese Firma

[Weder Korrektheit noch Funktionsfähigkeit der Software werden zugesichert.]

Datei: loc.ml Sprache: SML

Original von: Coq^©

(************************************************************************)
(*         *   The Coq Proof Assistant / The Coq Development Team       *)
(*  v      *   INRIA, CNRS and contributors - Copyright 1999-2018       *)
(* <O___,, *       (see CREDITS file for the list of authors)           *)
(*   \VV/  **************************************************************)
(*    //   *    This file is distributed under the terms of the         *)
(*         *     GNU Lesser General Public License Version 2.1          *)
(*         *     (see LICENSE file for the text of the license)         *)
(************************************************************************)

(* Locations management *)

type source =
  | InFile of string
  | ToplevelInput

type t = {
  fname : source; (** filename or toplevel input *)
  line_nb : int; (** start line number *)
  bol_pos : int; (** position of the beginning of start line *)
  line_nb_last : int; (** end line number *)
  bol_pos_last : int; (** position of the beginning of end line *)
  bp : int; (** start position *)
  ep : int; (** end position *)
}

let create fname line_nb bol_pos bp ep = {
  fname = fname; line_nb = line_nb; bol_pos = bol_pos;
  line_nb_last = line_nb; bol_pos_last = bol_pos; bp = bp; ep = ep;
}

let initial source = create source 1 0 0 0

let make_loc (bp, ep) = {
  fname = ToplevelInput; line_nb = -1; bol_pos = 0; line_nb_last = -1; bol_pos_last = 0;
  bp = bp; ep = ep;
}

let mergeable loc1 loc2 =
  loc1.fname = loc2.fname

let merge loc1 loc2 =
  if not (mergeable loc1 loc2) then
    failwith "Trying to merge unmergeable locations.";
  if loc1.bp < loc2.bp then
    if loc1.ep < loc2.ep then {
      fname = loc1.fname;
      line_nb = loc1.line_nb;
      bol_pos = loc1.bol_pos;
      line_nb_last = loc2.line_nb_last;
      bol_pos_last = loc2.bol_pos_last;
      bp = loc1.bp; ep = loc2.ep;
    }
    else loc1
  else if loc2.ep < loc1.ep then {
    fname = loc2.fname;
    line_nb = loc2.line_nb;
    bol_pos = loc2.bol_pos;
    line_nb_last = loc1.line_nb_last;
    bol_pos_last = loc1.bol_pos_last;
    bp = loc2.bp; ep = loc1.ep;
  }
  else loc2

let merge_opt l1 l2 = match l1, l2 with
  | None, None    -> None
  | Some l , None -> Some l
  | None, Some l  -> Some l
  | Some l1, Some l2 -> Some (merge l1 l2)

let finer l1 l2 = match l1, l2 with
  | None, _    -> false
  | Some l , None -> true
  | Some l1, Some l2 -> l1.fname = l2.fname && merge l1 l2 = l2

let unloc loc = (loc.bp, loc.ep)

let shift_loc kb kp loc = { loc with bp = loc.bp + kb ; ep = loc.ep + kp }

(** Located type *)
type 'a located = t option * 'a

let tag ?loc x = loc, x
let map f (l,x) = (l, f x)

(** Exceptions *)

let location : t Exninfo.t = Exninfo.make ()

let add_loc e loc = Exninfo.add e location loc
let get_loc e = Exninfo.get e location

let raise ?loc e =
  match loc with
  | None     -> raise e
  | Some loc ->
    let info = Exninfo.add Exninfo.null location loc in
    Exninfo.iraise (e, info)

¤ Dauer der Verarbeitung: 0.0 Sekunden (vorverarbeitet) ¤

Download des Quellennavigators
Download des sprechenden Kalenders
in der Quellcodebibliothek suchen

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.