325 lines
13 KiB
OCaml
325 lines
13 KiB
OCaml
(* camlp4r *)
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(****************************************************************************)
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(* *)
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(* Objective Caml *)
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(* *)
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(* INRIA Rocquencourt *)
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(* *)
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(* Copyright 2006 Institut National de Recherche en Informatique et *)
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(* en Automatique. All rights reserved. This file is distributed under *)
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(* the terms of the GNU Library General Public License, with the special *)
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(* exception on linking described in LICENSE at the top of the Objective *)
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(* Caml source tree. *)
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(* *)
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(****************************************************************************)
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(* Authors:
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* - Daniel de Rauglaudre: initial version
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* - Nicolas Pouillard: refactoring
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*)
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(* $Id$ *)
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open Camlp4;
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open PreCast.Syntax;
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open PreCast;
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open Format;
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module CleanAst = Camlp4.Struct.CleanAst.Make Ast;
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module SSet = Set.Make String;
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value pa_r = "Camlp4OCamlRevisedParser";
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value pa_rr = "Camlp4OCamlReloadedParser";
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value pa_o = "Camlp4OCamlParser";
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value pa_rp = "Camlp4OCamlRevisedParserParser";
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value pa_op = "Camlp4OCamlParserParser";
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value pa_g = "Camlp4GrammarParser";
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value pa_m = "Camlp4MacroParser";
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value pa_qb = "Camlp4QuotationCommon";
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value pa_q = "Camlp4QuotationExpander";
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value pa_rq = "Camlp4OCamlRevisedQuotationExpander";
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value pa_oq = "Camlp4OCamlOriginalQuotationExpander";
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value pa_l = "Camlp4ListComprehension";
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open Register;
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value dyn_loader = ref (fun []);
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value rcall_callback = ref (fun () -> ());
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value loaded_modules = ref SSet.empty;
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value add_to_loaded_modules name =
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loaded_modules.val := SSet.add name loaded_modules.val;
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value (objext,libext) =
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if DynLoader.is_native then (".cmxs",".cmxs")
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else (".cmo",".cma");
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value rewrite_and_load n x =
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let dyn_loader = dyn_loader.val () in
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let find_in_path = DynLoader.find_in_path dyn_loader in
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let real_load name = do {
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add_to_loaded_modules name;
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DynLoader.load dyn_loader name
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} in
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let load = List.iter begin fun n ->
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if SSet.mem n loaded_modules.val || List.mem n Register.loaded_modules.val then ()
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else begin
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add_to_loaded_modules n;
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DynLoader.load dyn_loader (n ^ objext);
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end
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end in
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do {
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match (n, String.lowercase x) with
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[ ("Parsers"|"", "pa_r.cmo" | "r" | "ocamlr" | "ocamlrevised" | "camlp4ocamlrevisedparser.cmo") -> load [pa_r]
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| ("Parsers"|"", "rr" | "reloaded" | "ocamlreloaded" | "camlp4ocamlreloadedparser.cmo") -> load [pa_rr]
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| ("Parsers"|"", "pa_o.cmo" | "o" | "ocaml" | "camlp4ocamlparser.cmo") -> load [pa_r; pa_o]
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| ("Parsers"|"", "pa_rp.cmo" | "rp" | "rparser" | "camlp4ocamlrevisedparserparser.cmo") -> load [pa_r; pa_o; pa_rp]
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| ("Parsers"|"", "pa_op.cmo" | "op" | "parser" | "camlp4ocamlparserparser.cmo") -> load [pa_r; pa_o; pa_rp; pa_op]
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| ("Parsers"|"", "pa_extend.cmo" | "pa_extend_m.cmo" | "g" | "grammar" | "camlp4grammarparser.cmo") -> load [pa_g]
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| ("Parsers"|"", "pa_macro.cmo" | "m" | "macro" | "camlp4macroparser.cmo") -> load [pa_m]
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| ("Parsers"|"", "q" | "camlp4quotationexpander.cmo") -> load [pa_qb; pa_q]
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| ("Parsers"|"", "q_mlast.cmo" | "rq" | "camlp4ocamlrevisedquotationexpander.cmo") -> load [pa_qb; pa_rq]
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| ("Parsers"|"", "oq" | "camlp4ocamloriginalquotationexpander.cmo") -> load [pa_r; pa_o; pa_qb; pa_oq]
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| ("Parsers"|"", "rf") -> load [pa_r; pa_rp; pa_qb; pa_q; pa_g; pa_l; pa_m]
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| ("Parsers"|"", "of") -> load [pa_r; pa_o; pa_rp; pa_op; pa_qb; pa_rq; pa_g; pa_l; pa_m]
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| ("Parsers"|"", "comp" | "camlp4listcomprehension.cmo") -> load [pa_l]
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| ("Filters"|"", "lift" | "camlp4astlifter.cmo") -> load ["Camlp4AstLifter"]
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| ("Filters"|"", "exn" | "camlp4exceptiontracer.cmo") -> load ["Camlp4ExceptionTracer"]
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| ("Filters"|"", "prof" | "camlp4profiler.cmo") -> load ["Camlp4Profiler"]
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(* map is now an alias of fold since fold handles map too *)
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| ("Filters"|"", "map" | "camlp4mapgenerator.cmo") -> load ["Camlp4FoldGenerator"]
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| ("Filters"|"", "fold" | "camlp4foldgenerator.cmo") -> load ["Camlp4FoldGenerator"]
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| ("Filters"|"", "meta" | "camlp4metagenerator.cmo") -> load ["Camlp4MetaGenerator"]
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| ("Filters"|"", "trash" | "camlp4trashremover.cmo") -> load ["Camlp4TrashRemover"]
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| ("Filters"|"", "striploc" | "camlp4locationstripper.cmo") -> load ["Camlp4LocationStripper"]
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| ("Filters"|"", "tracer" | "camlp4tracer.cmo") -> load ["Camlp4Tracer"]
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| ("Printers"|"", "pr_r.cmo" | "r" | "ocamlr" | "camlp4ocamlrevisedprinter.cmo") ->
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Register.enable_ocamlr_printer ()
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| ("Printers"|"", "pr_o.cmo" | "o" | "ocaml" | "camlp4ocamlprinter.cmo") ->
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Register.enable_ocaml_printer ()
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| ("Printers"|"", "pr_dump.cmo" | "p" | "dumpocaml" | "camlp4ocamlastdumper.cmo") ->
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Register.enable_dump_ocaml_ast_printer ()
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| ("Printers"|"", "d" | "dumpcamlp4" | "camlp4astdumper.cmo") ->
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Register.enable_dump_camlp4_ast_printer ()
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| ("Printers"|"", "a" | "auto" | "camlp4autoprinter.cmo") ->
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load ["Camlp4AutoPrinter"]
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| _ ->
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let y = "Camlp4"^n^"/"^x^objext in
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real_load (try find_in_path y with [ Not_found -> x ]) ];
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rcall_callback.val ();
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};
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value print_warning = eprintf "%a:\n%s@." Loc.print;
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value rec parse_file dyn_loader name pa getdir =
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let directive_handler = Some (fun ast ->
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match getdir ast with
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[ Some x ->
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match x with
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[ (_, "load", s) -> do { rewrite_and_load "" s; None }
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| (_, "directory", s) -> do { DynLoader.include_dir dyn_loader s; None }
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| (_, "use", s) -> Some (parse_file dyn_loader s pa getdir)
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| (_, "default_quotation", s) -> do { Quotation.default.val := s; None }
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| (loc, _, _) -> Loc.raise loc (Stream.Error "bad directive") ]
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| None -> None ]) in
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let loc = Loc.mk name
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in do {
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current_warning.val := print_warning;
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let ic = if name = "-" then stdin else open_in_bin name;
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let cs = Stream.of_channel ic;
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let clear () = if name = "-" then () else close_in ic;
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let phr =
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try pa ?directive_handler loc cs
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with x -> do { clear (); raise x };
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clear ();
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phr
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};
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value output_file = ref None;
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value process dyn_loader name pa pr clean fold_filters getdir =
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let ast = parse_file dyn_loader name pa getdir in
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let ast = fold_filters (fun t filter -> filter t) ast in
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let ast = clean ast in
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pr ?input_file:(Some name) ?output_file:output_file.val ast;
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value gind =
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fun
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[ <:sig_item@loc< # $n$ $str:s$ >> -> Some (loc, n, s)
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| _ -> None ];
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value gimd =
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fun
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[ <:str_item@loc< # $n$ $str:s$ >> -> Some (loc, n, s)
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| _ -> None ];
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value process_intf dyn_loader name =
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process dyn_loader name CurrentParser.parse_interf CurrentPrinter.print_interf
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(new CleanAst.clean_ast)#sig_item
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AstFilters.fold_interf_filters gind;
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value process_impl dyn_loader name =
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process dyn_loader name CurrentParser.parse_implem CurrentPrinter.print_implem
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(new CleanAst.clean_ast)#str_item
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AstFilters.fold_implem_filters gimd;
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value just_print_the_version () =
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do { printf "%s@." Camlp4_config.version; exit 0 };
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value print_version () =
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do { eprintf "Camlp4 version %s@." Camlp4_config.version; exit 0 };
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value print_stdlib () =
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do { printf "%s@." Camlp4_config.camlp4_standard_library; exit 0 };
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value usage ini_sl ext_sl =
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do {
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eprintf "\
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Usage: camlp4 [load-options] [--] [other-options]
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Options:
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<file>.ml Parse this implementation file
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<file>.mli Parse this interface file
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<file>.%s Load this module inside the Camlp4 core@."
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(if DynLoader.is_native then "cmx " else "(cmo|cma)")
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;
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Options.print_usage_list ini_sl;
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(* loop (ini_sl @ ext_sl) where rec loop =
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fun
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[ [(y, _, _) :: _] when y = "-help" -> ()
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| [_ :: sl] -> loop sl
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| [] -> eprintf " -help Display this list of options.@." ]; *)
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if ext_sl <> [] then do {
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eprintf "Options added by loaded object files:@.";
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Options.print_usage_list ext_sl;
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}
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else ();
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};
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value warn_noassert () =
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do {
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eprintf "\
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camlp4 warning: option -noassert is obsolete
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You should give the -noassert option to the ocaml compiler instead.@.";
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};
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type file_kind =
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[ Intf of string
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| Impl of string
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| Str of string
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| ModuleImpl of string
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| IncludeDir of string ];
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value search_stdlib = ref True;
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value print_loaded_modules = ref False;
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value (task, do_task) =
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let t = ref None in
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let task f x =
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let () = Camlp4_config.current_input_file.val := x in
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t.val := Some (if t.val = None then (fun _ -> f x)
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else (fun usage -> usage ())) in
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let do_task usage = match t.val with [ Some f -> f usage | None -> () ] in
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(task, do_task);
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value input_file x =
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let dyn_loader = dyn_loader.val () in
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do {
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rcall_callback.val ();
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match x with
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[ Intf file_name -> task (process_intf dyn_loader) file_name
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| Impl file_name -> task (process_impl dyn_loader) file_name
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| Str s ->
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begin
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let (f, o) = Filename.open_temp_file "from_string" ".ml";
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output_string o s;
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close_out o;
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task (process_impl dyn_loader) f;
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at_exit (fun () -> Sys.remove f);
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end
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| ModuleImpl file_name -> rewrite_and_load "" file_name
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| IncludeDir dir -> DynLoader.include_dir dyn_loader dir ];
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rcall_callback.val ();
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};
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value initial_spec_list =
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[("-I", Arg.String (fun x -> input_file (IncludeDir x)),
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"<directory> Add directory in search patch for object files.");
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("-where", Arg.Unit print_stdlib,
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"Print camlp4 library directory and exit.");
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("-nolib", Arg.Clear search_stdlib,
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"No automatic search for object files in library directory.");
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("-intf", Arg.String (fun x -> input_file (Intf x)),
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"<file> Parse <file> as an interface, whatever its extension.");
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("-impl", Arg.String (fun x -> input_file (Impl x)),
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"<file> Parse <file> as an implementation, whatever its extension.");
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("-str", Arg.String (fun x -> input_file (Str x)),
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"<string> Parse <string> as an implementation.");
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("-unsafe", Arg.Set Camlp4_config.unsafe,
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"Generate unsafe accesses to array and strings.");
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("-noassert", Arg.Unit warn_noassert,
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"Obsolete, do not use this option.");
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("-verbose", Arg.Set Camlp4_config.verbose,
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"More verbose in parsing errors.");
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("-loc", Arg.Set_string Loc.name,
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"<name> Name of the location variable (default: " ^ Loc.name.val ^ ").");
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("-QD", Arg.String (fun x -> Quotation.dump_file.val := Some x),
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"<file> Dump quotation expander result in case of syntax error.");
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("-o", Arg.String (fun x -> output_file.val := Some x),
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"<file> Output on <file> instead of standard output.");
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("-v", Arg.Unit print_version,
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"Print Camlp4 version and exit.");
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("-version", Arg.Unit just_print_the_version,
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"Print Camlp4 version number and exit.");
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("-no_quot", Arg.Clear Camlp4_config.quotations,
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"Don't parse quotations, allowing to use, e.g. \"<:>\" as token.");
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("-loaded-modules", Arg.Set print_loaded_modules, "Print the list of loaded modules.");
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("-parser", Arg.String (rewrite_and_load "Parsers"),
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"<name> Load the parser Camlp4Parsers/<name>.cmo");
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("-printer", Arg.String (rewrite_and_load "Printers"),
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"<name> Load the printer Camlp4Printers/<name>.cmo");
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("-filter", Arg.String (rewrite_and_load "Filters"),
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"<name> Load the filter Camlp4Filters/<name>.cmo");
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("-ignore", Arg.String ignore, "ignore the next argument");
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("--", Arg.Unit ignore, "Deprecated, does nothing")
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];
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Options.init initial_spec_list;
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value anon_fun name =
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input_file
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(if Filename.check_suffix name ".mli" then Intf name
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else if Filename.check_suffix name ".ml" then Impl name
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else if Filename.check_suffix name objext then ModuleImpl name
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else if Filename.check_suffix name libext then ModuleImpl name
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else raise (Arg.Bad ("don't know what to do with " ^ name)));
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value main argv =
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let usage () = do { usage initial_spec_list (Options.ext_spec_list ()); exit 0 } in
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try do {
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let dynloader = DynLoader.mk ~ocaml_stdlib:search_stdlib.val
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~camlp4_stdlib:search_stdlib.val ();
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dyn_loader.val := fun () -> dynloader;
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let call_callback () =
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Register.iter_and_take_callbacks
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(fun (name, module_callback) ->
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let () = add_to_loaded_modules name in
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module_callback ());
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call_callback ();
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rcall_callback.val := call_callback;
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match Options.parse anon_fun argv with
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[ [] -> ()
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| ["-help"|"--help"|"-h"|"-?" :: _] -> usage ()
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| [s :: _] ->
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do { eprintf "%s: unknown or misused option\n" s;
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eprintf "Use option -help for usage@.";
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exit 2 } ];
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do_task usage;
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call_callback ();
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if print_loaded_modules.val then do {
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SSet.iter (eprintf "%s@.") loaded_modules.val;
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} else ()
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}
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with
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[ Arg.Bad s -> do { eprintf "Error: %s\n" s;
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eprintf "Use option -help for usage@.";
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exit 2 }
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| Arg.Help _ -> usage ()
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| exc -> do { eprintf "@[<v0>%a@]@." ErrorHandler.print exc; exit 2 } ];
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main Sys.argv;
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