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|
(***********************************************************************)
(* *)
(* OCaml *)
(* *)
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 1997 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the Q Public License version 1.0. *)
(* *)
(***********************************************************************)
(* Auxiliary type for reporting syntax errors *)
open Format
type error =
Unclosed of Location.t * string * Location.t * string
| Expecting of Location.t * string
| Not_expecting of Location.t * string
| Applicative_path of Location.t
| Variable_in_scope of Location.t * string
| Other of Location.t
exception Error of error
exception Escape_error
let report_error ppf = function
| Unclosed(opening_loc, opening, closing_loc, closing) ->
if !Location.input_name = "//toplevel//"
&& Location.highlight_locations ppf opening_loc closing_loc
then fprintf ppf "Syntax error: '%s' expected, \
the highlighted '%s' might be unmatched" closing opening
else begin
fprintf ppf "%aSyntax error: '%s' expected@."
Location.print_error closing_loc closing;
fprintf ppf "%aThis '%s' might be unmatched"
Location.print_error opening_loc opening
end
| Expecting (loc, nonterm) ->
fprintf ppf
"%a@[Syntax error: %s expected.@]"
Location.print_error loc nonterm
| Not_expecting (loc, nonterm) ->
fprintf ppf
"%a@[Syntax error: %s not expected.@]"
Location.print_error loc nonterm
| Applicative_path loc ->
fprintf ppf
"%aSyntax error: applicative paths of the form F(X).t \
are not supported when the option -no-app-func is set."
Location.print_error loc
| Variable_in_scope (loc, var) ->
fprintf ppf
"%a@[In this scoped type, variable '%s@ \
is reserved for the local type %s.@]"
Location.print_error loc var var
| Other loc ->
fprintf ppf "%aSyntax error" Location.print_error loc
let location_of_error = function
| Unclosed(l,_,_,_)
| Applicative_path l
| Variable_in_scope(l,_)
| Other l
| Not_expecting (l, _)
| Expecting (l, _) -> l
|
