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|
(***********************************************************************)
(* *)
(* OCaml *)
(* *)
(* Luc Maranget, projet Moscova, *)
(* INRIA Rocquencourt *)
(* *)
(* Copyright 2002 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 Printf
open Syntax
open Lexgen
(* To copy the ML code fragments *)
type line_tracker = {
file : string;
oc : out_channel;
ic : in_channel;
mutable cur_line : int;
};;
let open_tracker file oc = {
file = file;
oc = oc;
ic = open_in_bin file;
cur_line = 1;
};;
let close_tracker tr = close_in_noerr tr.ic;;
let update_tracker tr =
fprintf tr.oc "\n";
flush tr.oc;
let cr_seen = ref false in
try while true do
match input_char tr.ic with
| '\010' when not !cr_seen -> tr.cur_line <- tr.cur_line + 1;
| '\013' -> cr_seen := true; tr.cur_line <- tr.cur_line + 1;
| _ -> cr_seen := false;
done with End_of_file ->
fprintf tr.oc "# %d \"%s\"\n" (tr.cur_line+1) tr.file;
;;
let copy_buffer = String.create 1024
let copy_chars_unix ic oc start stop =
let n = ref (stop - start) in
while !n > 0 do
let m = input ic copy_buffer 0 (min !n 1024) in
output oc copy_buffer 0 m;
n := !n - m
done
let copy_chars_win32 ic oc start stop =
for _i = start to stop - 1 do
let c = input_char ic in
if c <> '\r' then output_char oc c
done
let copy_chars =
match Sys.os_type with
"Win32" | "Cygwin" -> copy_chars_win32
| _ -> copy_chars_unix
let copy_chunk ic oc trl loc add_parens =
if loc.start_pos < loc.end_pos || add_parens then begin
fprintf oc "# %d \"%s\"\n" loc.start_line loc.loc_file;
if add_parens then begin
for _i = 1 to loc.start_col - 1 do output_char oc ' ' done;
output_char oc '(';
end else begin
for _i = 1 to loc.start_col do output_char oc ' ' done;
end;
seek_in ic loc.start_pos;
copy_chars ic oc loc.start_pos loc.end_pos;
if add_parens then output_char oc ')';
update_tracker trl;
end
(* Various memory actions *)
let output_mem_access oc i = fprintf oc "lexbuf.Lexing.lex_mem.(%d)" i
let output_memory_actions pref oc = function
| [] -> ()
| mvs ->
output_string oc "(* " ;
fprintf oc "L=%d " (List.length mvs) ;
List.iter
(fun mv -> match mv with
| Copy (tgt, src) ->
fprintf oc "[%d] <- [%d] ;" tgt src
| Set tgt ->
fprintf oc "[%d] <- p ; " tgt)
mvs ;
output_string oc " *)\n" ;
List.iter
(fun mv -> match mv with
| Copy (tgt, src) ->
fprintf oc
"%s%a <- %a ;\n"
pref output_mem_access tgt output_mem_access src
| Set tgt ->
fprintf oc "%s%a <- lexbuf.Lexing.lex_curr_pos ;\n"
pref output_mem_access tgt)
mvs
let output_base_mem oc = function
| Mem i -> output_mem_access oc i
| Start -> fprintf oc "lexbuf.Lexing.lex_start_pos"
| End -> fprintf oc "lexbuf.Lexing.lex_curr_pos"
let output_tag_access oc = function
| Sum (a,0) ->
output_base_mem oc a
| Sum (a,i) ->
fprintf oc "(%a + %d)" output_base_mem a i
let output_env ic oc tr env =
let pref = ref "let" in
match env with
| [] -> ()
| _ ->
(* Probably, we are better with variables sorted
in apparition order *)
let env =
List.sort
(fun ((_,p1),_) ((_,p2),_) ->
Pervasives.compare p1.start_pos p2.start_pos)
env in
List.iter
(fun ((x,pos),v) ->
fprintf oc "%s\n" !pref ;
copy_chunk ic oc tr pos false ;
begin match v with
| Ident_string (o,nstart,nend) ->
fprintf oc
"= Lexing.sub_lexeme%s lexbuf %a %a"
(if o then "_opt" else "")
output_tag_access nstart output_tag_access nend
| Ident_char (o,nstart) ->
fprintf oc
"= Lexing.sub_lexeme_char%s lexbuf %a"
(if o then "_opt" else "")
output_tag_access nstart
end ;
pref := "\nand")
env ;
fprintf oc " in\n"
(* Output the user arguments *)
let output_args oc args =
List.iter (fun x -> (output_string oc x; output_char oc ' ')) args
(* quiet flag *)
let quiet_mode = ref false;;
|
