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(* Js_of_ocaml compiler
* http://www.ocsigen.org/js_of_ocaml/
* Copyright (C) 2013 Hugo Heuzard
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, with linking exception;
* either version 2.1 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*)
open! Stdlib
type t =
{ src : string option
; name : string option
; col : int
; line : int
; idx : int
}
let zero = { src = None; name = None; col = 0; line = 0; idx = 0 }
let t_of_pos start_p =
let idx = start_p.Lexing.pos_cnum in
let line, col = start_p.pos_lnum, start_p.pos_cnum - start_p.pos_bol in
let name = Some start_p.pos_fname in
let src = Some start_p.pos_fname in
{ idx; line; col; name; src }
let t_of_lexbuf lexbuf : t = t_of_pos lexbuf.Lexing.lex_start_p
let start_position (t : t) =
{ Lexing.pos_fname = Option.value ~default:"" t.name
; pos_lnum = t.line
; pos_bol = t.idx - t.col
; pos_cnum = t.idx
}
let t_of_position ~src pos =
{ name = Some pos.Lexing.pos_fname
; src
; line = pos.Lexing.pos_lnum
; col = pos.Lexing.pos_cnum - pos.Lexing.pos_bol
; idx = 0
}
let to_string { name; src; line; col; _ } =
match name, src with
| (None | Some ""), (None | Some "") -> "?"
| _ ->
let file =
match name, src with
| (None | Some ""), Some file -> file
| Some file, (None | Some "") -> file
| Some file, Some _file -> file
| None, None -> assert false
in
Format.sprintf "%s:%d:%d" file line col
|
