227 lines
7.5 KiB
OCaml
227 lines
7.5 KiB
OCaml
(**************************************************************************)
|
|
(* *)
|
|
(* OCaml *)
|
|
(* *)
|
|
(* Daniel de Rauglaudre, projet Cristal, 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 GNU Lesser General Public License version 2.1, with the *)
|
|
(* special exception on linking described in the file LICENSE. *)
|
|
(* *)
|
|
(**************************************************************************)
|
|
|
|
open Format
|
|
|
|
type error =
|
|
| CannotRun of string
|
|
| WrongMagic of string
|
|
|
|
exception Error of error
|
|
|
|
(* Optionally preprocess a source file *)
|
|
|
|
let call_external_preprocessor sourcefile pp =
|
|
let tmpfile = Filename.temp_file "ocamlpp" "" in
|
|
let comm = Printf.sprintf "%s %s > %s"
|
|
pp (Filename.quote sourcefile) tmpfile
|
|
in
|
|
if Ccomp.command comm <> 0 then begin
|
|
Misc.remove_file tmpfile;
|
|
raise (Error (CannotRun comm));
|
|
end;
|
|
tmpfile
|
|
|
|
let preprocess sourcefile =
|
|
match !Clflags.preprocessor with
|
|
None -> sourcefile
|
|
| Some pp ->
|
|
Timings.(time (Preprocessing sourcefile))
|
|
(call_external_preprocessor sourcefile) pp
|
|
|
|
|
|
let remove_preprocessed inputfile =
|
|
match !Clflags.preprocessor with
|
|
None -> ()
|
|
| Some _ -> Misc.remove_file inputfile
|
|
|
|
type 'a ast_kind =
|
|
| Structure : Parsetree.structure ast_kind
|
|
| Signature : Parsetree.signature ast_kind
|
|
|
|
let magic_of_kind : type a . a ast_kind -> string = function
|
|
| Structure -> Config.ast_impl_magic_number
|
|
| Signature -> Config.ast_intf_magic_number
|
|
|
|
(* Note: some of the functions here should go to Ast_mapper instead,
|
|
which would encapsulate the "binary AST" protocol. *)
|
|
|
|
let write_ast (type a) (kind : a ast_kind) fn (ast : a) =
|
|
let oc = open_out_bin fn in
|
|
output_string oc (magic_of_kind kind);
|
|
output_value oc (!Location.input_name : string);
|
|
output_value oc (ast : a);
|
|
close_out oc
|
|
|
|
let apply_rewriter kind fn_in ppx =
|
|
let magic = magic_of_kind kind in
|
|
let fn_out = Filename.temp_file "camlppx" "" in
|
|
let comm =
|
|
Printf.sprintf "%s %s %s" ppx (Filename.quote fn_in) (Filename.quote fn_out)
|
|
in
|
|
let ok = Ccomp.command comm = 0 in
|
|
Misc.remove_file fn_in;
|
|
if not ok then begin
|
|
Misc.remove_file fn_out;
|
|
raise (Error (CannotRun comm));
|
|
end;
|
|
if not (Sys.file_exists fn_out) then
|
|
raise (Error (WrongMagic comm));
|
|
(* check magic before passing to the next ppx *)
|
|
let ic = open_in_bin fn_out in
|
|
let buffer =
|
|
try really_input_string ic (String.length magic) with End_of_file -> "" in
|
|
close_in ic;
|
|
if buffer <> magic then begin
|
|
Misc.remove_file fn_out;
|
|
raise (Error (WrongMagic comm));
|
|
end;
|
|
fn_out
|
|
|
|
let read_ast (type a) (kind : a ast_kind) fn : a =
|
|
let ic = open_in_bin fn in
|
|
try
|
|
let magic = magic_of_kind kind in
|
|
let buffer = really_input_string ic (String.length magic) in
|
|
assert(buffer = magic); (* already checked by apply_rewriter *)
|
|
Location.input_name := (input_value ic : string);
|
|
let ast = (input_value ic : a) in
|
|
close_in ic;
|
|
Misc.remove_file fn;
|
|
ast
|
|
with exn ->
|
|
close_in ic;
|
|
Misc.remove_file fn;
|
|
raise exn
|
|
|
|
let rewrite kind ppxs ast =
|
|
let fn = Filename.temp_file "camlppx" "" in
|
|
write_ast kind fn ast;
|
|
let fn = List.fold_left (apply_rewriter kind) fn (List.rev ppxs) in
|
|
read_ast kind fn
|
|
|
|
let apply_rewriters_str ?(restore = true) ~tool_name ast =
|
|
match !Clflags.all_ppx with
|
|
| [] -> ast
|
|
| ppxs ->
|
|
ast
|
|
|> Ast_mapper.add_ppx_context_str ~tool_name
|
|
|> rewrite Structure ppxs
|
|
|> Ast_mapper.drop_ppx_context_str ~restore
|
|
|
|
let apply_rewriters_sig ?(restore = true) ~tool_name ast =
|
|
match !Clflags.all_ppx with
|
|
| [] -> ast
|
|
| ppxs ->
|
|
ast
|
|
|> Ast_mapper.add_ppx_context_sig ~tool_name
|
|
|> rewrite Signature ppxs
|
|
|> Ast_mapper.drop_ppx_context_sig ~restore
|
|
|
|
let apply_rewriters ?restore ~tool_name
|
|
(type a) (kind : a ast_kind) (ast : a) : a =
|
|
match kind with
|
|
| Structure ->
|
|
apply_rewriters_str ?restore ~tool_name ast
|
|
| Signature ->
|
|
apply_rewriters_sig ?restore ~tool_name ast
|
|
|
|
(* Parse a file or get a dumped syntax tree from it *)
|
|
|
|
exception Outdated_version
|
|
|
|
let open_and_check_magic inputfile ast_magic =
|
|
let ic = open_in_bin inputfile in
|
|
let is_ast_file =
|
|
try
|
|
let buffer = really_input_string ic (String.length ast_magic) in
|
|
if buffer = ast_magic then true
|
|
else if String.sub buffer 0 9 = String.sub ast_magic 0 9 then
|
|
raise Outdated_version
|
|
else false
|
|
with
|
|
Outdated_version ->
|
|
Misc.fatal_error "OCaml and preprocessor have incompatible versions"
|
|
| _ -> false
|
|
in
|
|
(ic, is_ast_file)
|
|
|
|
let parse (type a) (kind : a ast_kind) lexbuf : a =
|
|
match kind with
|
|
| Structure -> Parse.implementation lexbuf
|
|
| Signature -> Parse.interface lexbuf
|
|
|
|
let file_aux ppf ~tool_name inputfile (type a) parse_fun invariant_fun (kind : a ast_kind) =
|
|
let ast_magic = magic_of_kind kind in
|
|
let (ic, is_ast_file) = open_and_check_magic inputfile ast_magic in
|
|
let ast =
|
|
try
|
|
if is_ast_file then begin
|
|
if !Clflags.fast then
|
|
(* FIXME make this a proper warning *)
|
|
fprintf ppf "@[Warning: %s@]@."
|
|
"option -unsafe used with a preprocessor returning a syntax tree";
|
|
Location.input_name := (input_value ic : string);
|
|
(input_value ic : a)
|
|
end else begin
|
|
seek_in ic 0;
|
|
Location.input_name := inputfile;
|
|
let lexbuf = Lexing.from_channel ic in
|
|
Location.init lexbuf inputfile;
|
|
parse_fun lexbuf
|
|
end
|
|
with x -> close_in ic; raise x
|
|
in
|
|
close_in ic;
|
|
let ast = apply_rewriters ~restore:false ~tool_name kind ast in
|
|
if is_ast_file || !Clflags.all_ppx <> [] then invariant_fun ast;
|
|
ast
|
|
|
|
let file ppf ~tool_name inputfile parse_fun ast_kind =
|
|
file_aux ppf ~tool_name inputfile parse_fun ignore ast_kind
|
|
|
|
let report_error ppf = function
|
|
| CannotRun cmd ->
|
|
fprintf ppf "Error while running external preprocessor@.\
|
|
Command line: %s@." cmd
|
|
| WrongMagic cmd ->
|
|
fprintf ppf "External preprocessor does not produce a valid file@.\
|
|
Command line: %s@." cmd
|
|
|
|
let () =
|
|
Location.register_error_of_exn
|
|
(function
|
|
| Error err -> Some (Location.error_of_printer_file report_error err)
|
|
| _ -> None
|
|
)
|
|
|
|
let parse_file ~tool_name invariant_fun kind ppf sourcefile =
|
|
Location.input_name := sourcefile;
|
|
let inputfile = preprocess sourcefile in
|
|
let ast =
|
|
let parse_fun = Timings.(time (Parsing sourcefile)) (parse kind) in
|
|
try file_aux ppf ~tool_name inputfile parse_fun invariant_fun kind
|
|
with exn ->
|
|
remove_preprocessed inputfile;
|
|
raise exn
|
|
in
|
|
remove_preprocessed inputfile;
|
|
ast
|
|
|
|
let parse_implementation ppf ~tool_name sourcefile =
|
|
parse_file ~tool_name Ast_invariants.structure Structure ppf sourcefile
|
|
let parse_interface ppf ~tool_name sourcefile =
|
|
parse_file ~tool_name Ast_invariants.signature Signature ppf sourcefile
|