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|
(************************************************************************)
(* * 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) *)
(************************************************************************)
(** {5 Basic types} *)
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 *)
}
(** {5 Location manipulation} *)
(** This is inherited from CAMPL4/5. *)
val create : source -> int -> int -> int -> int -> t
(** Create a location from a filename, a line number, a position of the
beginning of the line, a start and end position *)
val unloc : t -> int * int
(** Return the start and end position of a location *)
val make_loc : int * int -> t
(** Make a location out of its start and end position *)
val merge : t -> t -> t
val merge_opt : t option -> t option -> t option
(** Merge locations, usually generating the largest possible span *)
val finer : t option -> t option -> bool
(** Answers [true] when the first location is more defined, or, when
both defined, included in the second one *)
val shift_loc : int -> int -> t -> t
(** [shift_loc loc n p] shifts the beginning of location by [n] and
the end by [p]; it is assumed that the shifts do not change the
lines at which the location starts and ends *)
(** {5 Located exceptions} *)
val add_loc : Exninfo.info -> t -> Exninfo.info
(** Adding location to an exception *)
val get_loc : Exninfo.info -> t option
(** Retrieving the optional location of an exception *)
val raise : ?loc:t -> exn -> 'a
(** [raise loc e] is the same as [Pervasives.raise (add_loc e loc)]. *)
(** {5 Objects with location information } *)
type 'a located = t option * 'a
val tag : ?loc:t -> 'a -> 'a located
(** Embed a location in a type *)
val map : ('a -> 'b) -> 'a located -> 'b located
(** Modify an object carrying a location *)
|
