Imported Upstream version 8.5~beta1+dfsg

1 files changed, 79 insertions, 0 deletions

diff --git a/lib/loc.ml b/lib/loc.ml
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+(************************************************************************)
+(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
+(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2015     *)
+(*   \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 = Pervasives.(=) loc ghost (** FIXME *)
+
+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 represent loc = (loc.fname, loc.line_nb, loc.bol_pos, 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 =
+  let info = Exninfo.add Exninfo.null location loc in
+  Exninfo.iraise (e, info)