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(**************************************************************************)
(* *)
(* OCaml *)
(* *)
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 1996 Institut National de Recherche en Informatique et *)
(* en Automatique. *)
(* *)
(* All rights reserved. This file is distributed under the terms of *)
(* the GNU Lesser General Public License version 2.1, with the *)
(* special exception on linking described in the file LICENSE. *)
(* *)
(**************************************************************************)
(** Source code locations (ranges of positions), used in parsetree. *)
open Format
type t = {
loc_start: Lexing.position;
loc_end: Lexing.position;
loc_ghost: bool;
}
(** Note on the use of Lexing.position in this module.
If [pos_fname = ""], then use [!input_name] instead.
If [pos_lnum = -1], then [pos_bol = 0]. Use [pos_cnum] and
re-parse the file to get the line and character numbers.
Else all fields are correct.
*)
val none : t
(** An arbitrary value of type [t]; describes an empty ghost range. *)
val in_file : string -> t
(** Return an empty ghost range located in a given file. *)
val init : Lexing.lexbuf -> string -> unit
(** Set the file name and line number of the [lexbuf] to be the start
of the named file. *)
val curr : Lexing.lexbuf -> t
(** Get the location of the current token from the [lexbuf]. *)
val symbol_rloc: unit -> t
val symbol_gloc: unit -> t
(** [rhs_loc n] returns the location of the symbol at position [n], starting
at 1, in the current parser rule. *)
val rhs_loc: int -> t
val input_name: string ref
val input_lexbuf: Lexing.lexbuf option ref
val get_pos_info: Lexing.position -> string * int * int (* file, line, char *)
val print_loc: formatter -> t -> unit
val print_error: formatter -> t -> unit
val print_error_cur_file: formatter -> unit -> unit
val print_warning: t -> formatter -> Warnings.t -> unit
val formatter_for_warnings : formatter ref
val prerr_warning: t -> Warnings.t -> unit
val echo_eof: unit -> unit
val reset: unit -> unit
val warning_printer : (t -> formatter -> Warnings.t -> unit) ref
(** Hook for intercepting warnings. *)
val default_warning_printer : t -> formatter -> Warnings.t -> unit
(** Original warning printer for use in hooks. *)
val highlight_locations: formatter -> t list -> bool
type 'a loc = {
txt : 'a;
loc : t;
}
val mknoloc : 'a -> 'a loc
val mkloc : 'a -> t -> 'a loc
val print: formatter -> t -> unit
val print_compact: formatter -> t -> unit
val print_filename: formatter -> string -> unit
val absolute_path: string -> string
val show_filename: string -> string
(** In -absname mode, return the absolute path for this filename.
Otherwise, returns the filename unchanged. *)
val absname: bool ref
(* Support for located errors *)
type error =
{
loc: t;
msg: string;
sub: error list;
if_highlight: string; (* alternative message if locations are highlighted *)
}
exception Error of error
val print_error_prefix: formatter -> unit -> unit
(* print the prefix "Error:" possibly with style *)
val error: ?loc:t -> ?sub:error list -> ?if_highlight:string -> string -> error
val errorf: ?loc:t -> ?sub:error list -> ?if_highlight:string
-> ('a, Format.formatter, unit, error) format4 -> 'a
val raise_errorf: ?loc:t -> ?sub:error list -> ?if_highlight:string
-> ('a, Format.formatter, unit, 'b) format4 -> 'a
val error_of_printer: t -> (formatter -> 'a -> unit) -> 'a -> error
val error_of_printer_file: (formatter -> 'a -> unit) -> 'a -> error
val error_of_exn: exn -> error option
val register_error_of_exn: (exn -> error option) -> unit
(* Each compiler module which defines a custom type of exception
which can surface as a user-visible error should register
a "printer" for this exception using [register_error_of_exn].
The result of the printer is an [error] value containing
a location, a message, and optionally sub-messages (each of them
being located as well). *)
val report_error: formatter -> error -> unit
val error_reporter : (formatter -> error -> unit) ref
(** Hook for intercepting error reports. *)
val default_error_reporter : formatter -> error -> unit
(** Original error reporter for use in hooks. *)
val report_exception: formatter -> exn -> unit
(* Reraise the exception if it is unknown. *)