catala/compiler/driver.ml
2022-03-16 12:00:36 +01:00

394 lines
15 KiB
OCaml

(* This file is part of the Catala compiler, a specification language for tax
and social benefits computation rules. Copyright (C) 2020 Inria,
contributors: Denis Merigoux <denis.merigoux@inria.fr>, Emile Rolley
<emile.rolley@tuta.io>
Licensed under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy of
the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
License for the specific language governing permissions and limitations under
the License. *)
module Cli = Utils.Cli
module Errors = Utils.Errors
module Pos = Utils.Pos
(** Associates a {!type: Cli.backend_lang} with its string represtation. *)
let languages = [ ("en", Cli.En); ("fr", Cli.Fr); ("pl", Cli.Pl) ]
(** Associates a file extension with its corresponding {!type: Cli.backend_lang}
string representation. *)
let extensions =
[ (".catala_fr", "fr"); (".catala_en", "en"); (".catala_pl", "pl") ]
(** Entry function for the executable. Returns a negative number in case of
error. Usage: [driver source_file options]*)
let driver source_file (options : Cli.options) : int =
try
Cli.set_option_globals options;
Cli.debug_print "Reading files...";
let filename = ref "" in
(match source_file with
| Pos.FileName f -> filename := f
| Contents c -> Cli.contents := c);
(match options.max_prec_digits with
| None -> ()
| Some i -> Cli.max_prec_digits := i);
let l =
match options.language with
| Some l -> l
| None -> (
(* Try to infer the language from the intput file extension. *)
let ext = Filename.extension !filename in
if ext = "" then
Errors.raise_error
"No file extension found for the file '%s'. (Try to add one or \
to specify the -l flag)"
!filename;
try List.assoc ext extensions with Not_found -> ext)
in
let language =
try List.assoc l languages
with Not_found ->
Errors.raise_error
"The selected language (%s) is not supported by Catala" l
in
Cli.locale_lang := language;
let backend = options.backend in
let backend =
match Cli.catala_backend_option_of_string backend with
| Some b -> b
| None ->
Errors.raise_error
"The selected backend (%s) is not supported by Catala" backend
in
let prgm =
Surface.Parser_driver.parse_top_level_file source_file language
in
let prgm = Surface.Fill_positions.fill_pos_with_legislative_info prgm in
match backend with
| Cli.Makefile ->
let backend_extensions_list = [ ".tex" ] in
let source_file =
match source_file with
| FileName f -> f
| Contents _ ->
Errors.raise_error
"The Makefile backend does not work if the input is not a file"
in
let output_file =
match options.output_file with
| Some f -> f
| None -> Filename.remove_extension source_file ^ ".d"
in
Cli.debug_print "Writing list of dependencies to %s..." output_file;
let oc = open_out output_file in
Printf.fprintf oc "%s:\\\n%s\n%s:"
(String.concat "\\\n"
(output_file
:: List.map
(fun ext -> Filename.remove_extension source_file ^ ext)
backend_extensions_list))
(String.concat "\\\n" prgm.program_source_files)
(String.concat "\\\n" prgm.program_source_files);
0
| Cli.Latex | Cli.Html ->
let source_file =
match source_file with
| FileName f -> f
| Contents _ ->
Errors.raise_error
"The literate programming backends do not work if the input is \
not a file"
in
Cli.debug_print "Weaving literate program into %s"
(match backend with
| Cli.Latex -> "LaTeX"
| Cli.Html -> "HTML"
| _ -> assert false (* should not happen *));
let output_file =
match options.output_file with
| Some f -> f
| None -> (
Filename.remove_extension source_file
^
match backend with
| Cli.Latex -> ".tex"
| Cli.Html -> ".html"
| _ -> assert false
(* should not happen *))
in
let oc = open_out output_file in
let weave_output =
match backend with
| Cli.Latex -> Literate.Latex.ast_to_latex language
| Cli.Html -> Literate.Html.ast_to_html language
| _ -> assert false
(* should not happen *)
in
Cli.debug_print "Writing to %s" output_file;
let fmt = Format.formatter_of_out_channel oc in
if options.wrap_weaved_output then
match backend with
| Cli.Latex ->
Literate.Latex.wrap_latex prgm.Surface.Ast.program_source_files
language fmt (fun fmt -> weave_output fmt prgm)
| Cli.Html ->
Literate.Html.wrap_html prgm.Surface.Ast.program_source_files
language fmt (fun fmt -> weave_output fmt prgm)
| _ -> assert false (* should not happen *)
else weave_output fmt prgm;
close_out oc;
0
| _ -> (
Cli.debug_print "Name resolution...";
let ctxt = Surface.Name_resolution.form_context prgm in
let scope_uid =
match (options.ex_scope, backend) with
| None, Cli.Interpret ->
Errors.raise_error "No scope was provided for execution."
| None, _ ->
snd
(try Desugared.Ast.IdentMap.choose ctxt.scope_idmap
with Not_found ->
Errors.raise_error
"There isn't any scope inside the program.")
| Some name, _ -> (
match Desugared.Ast.IdentMap.find_opt name ctxt.scope_idmap with
| None ->
Errors.raise_error
"There is no scope \"%s\" inside the program." name
| Some uid -> uid)
in
Cli.debug_print "Desugaring...";
let prgm = Surface.Desugaring.desugar_program ctxt prgm in
Cli.debug_print "Collecting rules...";
let prgm = Desugared.Desugared_to_scope.translate_program prgm in
if backend = Cli.Scopelang then begin
let fmt, at_end =
match options.output_file with
| Some f ->
let oc = open_out f in
(Format.formatter_of_out_channel oc, fun _ -> close_out oc)
| None -> (Format.std_formatter, fun _ -> ())
in
if Option.is_some options.ex_scope then
Format.fprintf fmt "%a\n"
(Scopelang.Print.format_scope ~debug:options.debug)
( scope_uid,
Scopelang.Ast.ScopeMap.find scope_uid prgm.program_scopes )
else
Format.fprintf fmt "%a\n"
(Scopelang.Print.format_program ~debug:options.debug)
prgm;
at_end ();
exit 0
end;
Cli.debug_print "Translating to default calculus...";
let prgm, type_ordering =
Scopelang.Scope_to_dcalc.translate_program prgm
in
let prgm =
if options.optimize then begin
Cli.debug_print "Optimizing default calculus...";
Dcalc.Optimizations.optimize_program prgm
end
else prgm
in
let prgrm_dcalc_expr =
Bindlib.unbox (Dcalc.Ast.build_whole_program_expr prgm scope_uid)
in
if backend = Cli.Dcalc then begin
let fmt, at_end =
match options.output_file with
| Some f ->
let oc = open_out f in
(Format.formatter_of_out_channel oc, fun _ -> close_out oc)
| None -> (Format.std_formatter, fun _ -> ())
in
if Option.is_some options.ex_scope then
Format.fprintf fmt "%a\n"
(Dcalc.Print.format_scope ~debug:options.debug prgm.decl_ctx)
(let _, _, s =
List.find (fun (name, _, _) -> name = scope_uid) prgm.scopes
in
(scope_uid, s))
else
Format.fprintf fmt "%a\n"
(Dcalc.Print.format_expr prgm.decl_ctx)
prgrm_dcalc_expr;
at_end ();
exit 0
end;
Cli.debug_print "Typechecking...";
let _typ = Dcalc.Typing.infer_type prgm.decl_ctx prgrm_dcalc_expr in
(* Cli.debug_print (Format.asprintf "Typechecking results :@\n%a"
(Dcalc.Print.format_typ prgm.decl_ctx) typ); *)
match backend with
| Cli.Typecheck ->
(* That's it! *)
Cli.result_print "Typechecking successful!";
0
| Cli.Proof ->
let vcs =
Verification.Conditions.generate_verification_conditions prgm
in
Verification.Solver.solve_vc prgm prgm.decl_ctx vcs;
0
| Cli.Interpret ->
Cli.debug_print "Starting interpretation...";
let results =
Dcalc.Interpreter.interpret_program prgm.decl_ctx prgrm_dcalc_expr
in
let out_regex = Re.Pcre.regexp "\\_out$" in
let results =
List.map
(fun ((v1, v1_pos), e1) ->
let v1 =
Re.Pcre.substitute ~rex:out_regex ~subst:(fun _ -> "") v1
in
((v1, v1_pos), e1))
results
in
let results =
List.sort
(fun ((v1, _), _) ((v2, _), _) -> String.compare v1 v2)
results
in
Cli.debug_print "End of interpretation";
Cli.result_print "Computation successful!%s"
(if List.length results > 0 then " Results:" else "");
List.iter
(fun ((var, _), result) ->
Cli.result_format "@[<hov 2>%s@ =@ %a@]" var
(Dcalc.Print.format_expr prgm.decl_ctx)
result)
results;
0
| Cli.OCaml | Cli.Python | Cli.Lcalc | Cli.Scalc ->
Cli.debug_print "Compiling program into lambda calculus...";
let prgm =
if options.avoid_exceptions then
Lcalc.Compile_without_exceptions.translate_program prgm
else Lcalc.Compile_with_exceptions.translate_program prgm
in
let prgm =
if options.optimize then begin
Cli.debug_print "Optimizing lambda calculus...";
Lcalc.Optimizations.optimize_program prgm
end
else prgm
in
if backend = Cli.Lcalc then begin
let fmt, at_end =
match options.output_file with
| Some f ->
let oc = open_out f in
(Format.formatter_of_out_channel oc, fun _ -> close_out oc)
| None -> (Format.std_formatter, fun _ -> ())
in
if Option.is_some options.ex_scope then
Format.fprintf fmt "%a\n"
(Lcalc.Print.format_scope ~debug:options.debug prgm.decl_ctx)
(let body =
List.find
(fun body -> body.Lcalc.Ast.scope_body_name = scope_uid)
prgm.scopes
in
body)
else
Format.fprintf fmt "%a\n"
(Format.pp_print_list
~pp_sep:(fun fmt () -> Format.fprintf fmt "\n\n")
(fun fmt scope ->
(Lcalc.Print.format_scope prgm.decl_ctx) fmt scope))
prgm.scopes;
at_end ();
exit 0
end;
let source_file =
match source_file with
| FileName f -> f
| Contents _ ->
Errors.raise_error
"This backend does not work if the input is not a file"
in
let new_output_file (extension : string) : string =
match options.output_file with
| Some f -> f
| None -> Filename.remove_extension source_file ^ extension
in
(match backend with
| Cli.OCaml ->
let output_file = new_output_file ".ml" in
Cli.debug_print "Writing to %s..." output_file;
let oc = open_out output_file in
let fmt = Format.formatter_of_out_channel oc in
Cli.debug_print "Compiling program into OCaml...";
Lcalc.To_ocaml.format_program fmt prgm type_ordering;
close_out oc
| Cli.Python | Cli.Scalc ->
let prgm = Scalc.Compile_from_lambda.translate_program prgm in
if backend = Cli.Scalc then begin
let fmt, at_end =
match options.output_file with
| Some f ->
let oc = open_out f in
( Format.formatter_of_out_channel oc,
fun _ -> close_out oc )
| None -> (Format.std_formatter, fun _ -> ())
in
if Option.is_some options.ex_scope then
Format.fprintf fmt "%a\n"
(Scalc.Print.format_scope ~debug:options.debug
prgm.decl_ctx)
(let body =
List.find
(fun body ->
body.Scalc.Ast.scope_body_name = scope_uid)
prgm.scopes
in
body)
else
Format.fprintf fmt "%a\n"
(Format.pp_print_list
~pp_sep:(fun fmt () -> Format.fprintf fmt "\n\n")
(fun fmt scope ->
(Scalc.Print.format_scope prgm.decl_ctx) fmt scope))
prgm.scopes;
at_end ();
exit 0
end;
let output_file = new_output_file ".py" in
Cli.debug_print "Compiling program into Python...";
Cli.debug_print "Writing to %s..." output_file;
let oc = open_out output_file in
let fmt = Format.formatter_of_out_channel oc in
Scalc.To_python.format_program fmt prgm type_ordering;
close_out oc
| _ -> assert false (* should not happen *));
0
| _ -> assert false
(* should not happen *))
with
| Errors.StructuredError (msg, pos) ->
Cli.error_print "%s" (Errors.print_structured_error msg pos);
-1
| Sys_error msg ->
Cli.error_print "System error: %s" msg;
-1
let main () =
let return_code =
Cmdliner.Term.eval (Cli.catala_t (fun f -> driver (FileName f)), Cli.info)
in
match return_code with
| `Ok 0 -> Cmdliner.Term.exit (`Ok 0)
| _ -> Cmdliner.Term.exit (`Error `Term)