catala/compiler/plugins/python.ml
Louis Gesbert 583e80993a Remove the with-exceptions backend
*Disclaimer*: This is intended for discussion

My impression is that the with-exceptions backend is to be superseded by the
without-exception backend, which is more general and more efficient. Therefore,
seeing the added complexity of maintaining the two in parallel, I see no good
reason to keep the with-exceptions version now that the equivalence of their
semantics have been proved.

It will also be nice to reduce divergences between the different backends ; and
this should make further simplifications possible (e.g. some thunkings may no
longer be needed)

Of course I am ready to hear arguments in favor of keeping it, be it in the mid-
or long-term.

This patch removes the `--avoid-exceptions` flag, making it the only option, and
the corresponding `with_exceptions` variant of the dcalc->lcalc translation. It
doesn't do further simplifications.
2024-07-04 15:08:13 +02:00

52 lines
2.0 KiB
OCaml

(* This file is part of the Catala compiler, a specification language for tax
and social benefits computation rules. Copyright (C) 2020 Inria, contributor:
Louis Gesbert <louis.gesbert@inria.fr>.
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. *)
(** This file is only for demonstration purposes, showing a trivial use of
backend plugins for Catala.
The code for the Python backend already has first-class support, so there
would be no reason to use this plugin instead *)
open Catala_utils
let run includes output optimize check_invariants closure_conversion options =
let open Driver.Commands in
let prg, type_ordering =
Driver.Passes.scalc options ~includes ~optimize ~check_invariants
~closure_conversion ~keep_special_ops:false ~dead_value_assignment:true
~no_struct_literals:false ~monomorphize_types:false
in
let output_file, with_output = get_output_format options ~ext:".py" output in
Message.debug "Compiling program into Python...";
Message.debug "Writing to %s..." (Option.value ~default:"stdout" output_file);
with_output @@ fun fmt -> Scalc.To_python.format_program fmt prg type_ordering
let term =
let open Cmdliner.Term in
const run
$ Cli.Flags.include_dirs
$ Cli.Flags.output
$ Cli.Flags.optimize
$ Cli.Flags.check_invariants
$ Cli.Flags.closure_conversion
let () =
Driver.Plugin.register "python-plugin" term
~doc:
"This plugin is for demonstration purposes and should be equivalent to \
using the built-in Python backend"