139 lines
4.7 KiB
OCaml
139 lines
4.7 KiB
OCaml
(***********************************************************************)
|
|
(* *)
|
|
(* OCaml *)
|
|
(* *)
|
|
(* Jacques Garrigue, Kyoto University RIMS *)
|
|
(* *)
|
|
(* Copyright 1996 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. *)
|
|
(* *)
|
|
(***********************************************************************)
|
|
|
|
open Lexer299
|
|
|
|
let input_buffer = Buffer.create 16383
|
|
let input_function ic buf len =
|
|
let len = input ic buf 0 len in
|
|
Buffer.add_substring input_buffer buf 0 len;
|
|
len
|
|
|
|
let output_buffer = Buffer.create 16383
|
|
|
|
let modified = ref false
|
|
|
|
let convert buffer =
|
|
let input_pos = ref 0 in
|
|
let copy_input stop =
|
|
Buffer.add_substring output_buffer (Buffer.contents input_buffer)
|
|
!input_pos (stop - !input_pos);
|
|
input_pos := stop
|
|
in
|
|
let last = ref (EOF, 0, 0) in
|
|
try while true do
|
|
let token = Lexer299.token buffer
|
|
and start = Lexing.lexeme_start buffer
|
|
and stop = Lexing.lexeme_end buffer
|
|
and last_token, last_start, last_stop = !last in
|
|
begin match token with
|
|
| LABEL l0 ->
|
|
let l = if l0 = "fun" then "f" else l0 in
|
|
begin match last_token with
|
|
| PREFIXOP "?(" ->
|
|
modified := true;
|
|
copy_input last_start;
|
|
Buffer.add_char output_buffer '?';
|
|
Buffer.add_string output_buffer l;
|
|
Buffer.add_string output_buffer ":(";
|
|
input_pos := stop
|
|
| QUESTION | LPAREN | LBRACE | SEMI | MINUSGREATER
|
|
| EQUAL | COLON | COLONGREATER
|
|
| VAL | MUTABLE | EXTERNAL | METHOD | OF ->
|
|
if l0 = "fun" then begin
|
|
modified := true;
|
|
copy_input start;
|
|
Buffer.add_string output_buffer l;
|
|
Buffer.add_char output_buffer ':';
|
|
input_pos := stop
|
|
end
|
|
| _ ->
|
|
modified := true;
|
|
copy_input start;
|
|
Buffer.add_char output_buffer '~';
|
|
Buffer.add_string output_buffer l;
|
|
Buffer.add_char output_buffer ':';
|
|
input_pos := stop
|
|
end
|
|
| LABELID l ->
|
|
modified := true;
|
|
begin match last_token with
|
|
| PREFIXOP "?(" ->
|
|
copy_input last_start;
|
|
Buffer.add_string output_buffer "?(";
|
|
Buffer.add_string output_buffer l;
|
|
input_pos := stop
|
|
| LPAREN ->
|
|
copy_input last_start;
|
|
Buffer.add_string output_buffer "~(";
|
|
Buffer.add_string output_buffer l;
|
|
input_pos := stop
|
|
| QUESTION ->
|
|
copy_input last_stop;
|
|
Buffer.add_string output_buffer l;
|
|
input_pos := stop
|
|
| _ ->
|
|
copy_input start;
|
|
Buffer.add_char output_buffer '~';
|
|
Buffer.add_string output_buffer l;
|
|
input_pos := stop
|
|
end
|
|
| EOF -> raise End_of_file
|
|
| _ -> ()
|
|
end;
|
|
if last_token = QUESTION && token = LPAREN then
|
|
last := (PREFIXOP "?(", last_start, stop)
|
|
else
|
|
last := (token, start, stop)
|
|
done with
|
|
End_of_file ->
|
|
copy_input (Buffer.length input_buffer)
|
|
|
|
let convert_file name =
|
|
let ic = open_in name in
|
|
Buffer.clear input_buffer;
|
|
Buffer.clear output_buffer;
|
|
modified := false;
|
|
begin
|
|
try convert (Lexing.from_function (input_function ic)); close_in ic
|
|
with exn -> close_in ic; raise exn
|
|
end;
|
|
if !modified then begin
|
|
let backup = name ^ ".bak" in
|
|
if Sys.file_exists backup then Sys.remove name
|
|
else Sys.rename name backup;
|
|
let oc = open_out name in
|
|
Buffer.output_buffer oc output_buffer;
|
|
close_out oc
|
|
end
|
|
|
|
let _ =
|
|
if Array.length Sys.argv < 2 || Sys.argv.(1) = "-h" || Sys.argv.(1) = "-help"
|
|
then begin
|
|
print_endline "Usage: ocaml299to3 <source file> ...";
|
|
print_endline "Description:";
|
|
print_endline
|
|
"Convert OCaml 2.99 O'Labl-style labels in implementation files to";
|
|
print_endline
|
|
"a syntax compatible with version 3. Also `fun:' labels are replaced \
|
|
by `f:'.";
|
|
print_endline "Other syntactic changes are not handled.";
|
|
print_endline "Old files are renamed to <file>.bak.";
|
|
print_endline "Interface files do not need label syntax conversion.";
|
|
exit 0
|
|
end;
|
|
for i = 1 to Array.length Sys.argv - 1 do
|
|
let name = Sys.argv.(i) in
|
|
prerr_endline ("Converting " ^ name);
|
|
Printexc.catch convert_file name
|
|
done
|