138 lines
4.4 KiB
OCaml
138 lines
4.4 KiB
OCaml
(***********************************************************************)
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(* *)
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(* Objective Caml *)
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(* *)
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(* Pierre Weis && Damien Doligez, INRIA Rocquencourt *)
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(* *)
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(* Copyright 1998 Institut National de Recherche en Informatique et *)
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(* en Automatique. All rights reserved. This file is distributed *)
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(* under the terms of the Q Public License version 1.0. *)
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(* *)
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(***********************************************************************)
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(* $Id$ *)
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(* Please keep them in alphabetical order *)
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type t = (* A is all *)
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| Comment of string (* C *)
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| Deprecated (* D *)
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| Partial_application (* F *)
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| Labels_omitted (* L *)
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| Method_override of string list (* M *)
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| Partial_match of string (* P *)
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| Statement_type (* S *)
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| Unused_match (* U *)
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| Hide_instance_variable of string (* V *)
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| Other of string (* X *)
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;;
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let letter = function (* 'a' is all *)
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| Comment _ -> 'c'
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| Deprecated -> 'd'
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| Partial_application -> 'f'
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| Labels_omitted -> 'l'
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| Method_override _ -> 'm'
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| Partial_match _ -> 'p'
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| Statement_type -> 's'
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| Unused_match -> 'u'
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| Hide_instance_variable _ -> 'v'
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| Other _ -> 'x'
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;;
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let check c =
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try ignore (String.index "acdflmpsuvxACDFLMPSUVX" c)
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with _ -> raise (Arg.Bad (Printf.sprintf "unknown warning option %c" c))
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;;
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let active = Array.create 26 true;;
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let error = Array.create 26 false;;
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let translate c =
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check c;
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if c >= 'A' && c <= 'Z' then
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(Char.code c - Char.code 'A', true)
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else
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(Char.code c - Char.code 'a', false)
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;;
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let is_active x =
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let (n, _) = translate (letter x) in
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active.(n)
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;;
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let is_error x =
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let (n, _) = translate (letter x) in
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error.(n)
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;;
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let parse_options iserr s =
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let flags = if iserr then error else active in
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for i = 0 to String.length s - 1 do
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if s.[i] = 'A' then Array.fill flags 0 (Array.length flags) true
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else if s.[i] = 'a' then Array.fill flags 0 (Array.length flags) false
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else begin
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let (n, fl) = translate s.[i] in
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flags.(n) <- fl;
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end;
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done
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;;
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let () = parse_options false "l";;
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let message = function
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| Partial_match "" -> "this pattern-matching is not exhaustive."
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| Partial_match s ->
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"this pattern-matching is not exhaustive.\n\
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Here is an example of a value that is not matched:\n" ^ s
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| Unused_match -> "this match case is unused."
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| Labels_omitted ->
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"labels were omitted in the application of this function."
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| Method_override slist ->
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String.concat " "
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("the following methods are overriden \
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by the inherited class:\n " :: slist)
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| Hide_instance_variable lab ->
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"this definition of an instance variable " ^ lab ^
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" hides a previously\ndefined instance variable of the same name."
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| Partial_application ->
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"this function application is partial,\n\
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maybe some arguments are missing."
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| Statement_type ->
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"this expression should have type unit."
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| Comment s -> "this is " ^ s ^ "."
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| Deprecated -> "this syntax is deprecated."
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| Other s -> s
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;;
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let nerrors = ref 0;;
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let print ppf w =
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let msg = message w in
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let newlines = ref 0 in
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for i = 0 to String.length msg - 1 do
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if msg.[i] = '\n' then incr newlines;
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done;
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let (out, flush, newline, space) =
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Format.pp_get_all_formatter_output_functions ppf ()
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in
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let countnewline x = incr newlines; newline x in
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Format.pp_set_all_formatter_output_functions ppf out flush countnewline space;
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Format.fprintf ppf "%s" msg;
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Format.pp_print_flush ppf ();
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Format.pp_set_all_formatter_output_functions ppf out flush newline space;
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let (n, _) = translate (letter w) in
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if error.(n) then incr nerrors;
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!newlines
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;;
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exception Errors of int;;
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let check_fatal () =
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if !nerrors > 0 then begin
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let e = Errors !nerrors in
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nerrors := 0;
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raise e;
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end;
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;;
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