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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(* Locations management *)
type t = {
fname : string; (** filename *)
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 make_loc (bp, ep) = {
fname = ""; line_nb = -1; bol_pos = 0; line_nb_last = -1; bol_pos_last = 0;
bp = bp; ep = ep; }
let ghost = {
fname = ""; line_nb = -1; bol_pos = 0; line_nb_last = -1; bol_pos_last = 0;
bp = 0; ep = 0; }
let is_ghost loc = loc.ep = 0
let merge loc1 loc2 =
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 unloc loc = (loc.bp, loc.ep)
let dummy_loc = ghost
let join_loc = merge
(** Located type *)
type 'a located = t * 'a
let located_fold_left f x (_,a) = f x a
let located_iter2 f (_,a) (_,b) = f a b
let down_located f (_,a) = f a
(** 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)
|
