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0f9ee2c72e
- Use separate functions for successive passes in module `Driver.Passes` - Use other functions for end results printing in module `Driver.Commands` As a consequence, it is much more flexible to use by plugins or libs and we no longer need the complex polymorphic variant parameter. This patch leverages previous changes to use Cmdliner subcommands and effectively specialises the flags of each Catala subcommand. Other changes include: - an attempt to normalise the generic options and reduce the number of global references. Some are ok, like `debug` ; some would better be further cleaned up, e.g. the ones used by Proof backend were moved to a `Proof.globals` module and need discussion. The printer no longer relies on the global languages and prints money amounts in an agnostic way. - the plugin directory is automatically guessed and loaded even in dev setups. Plugins are shown by the main `catala` command and listed in `catala --help` - exception catching at the toplevel has been refactored a bit as well; return codes are normalised to follow the manpage and avoid codes >= 128 that are generally reserved for shells. Update tests
59 lines
2.0 KiB
OCaml
59 lines
2.0 KiB
OCaml
(* This file is part of the Catala compiler, a specification language for tax
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and social benefits computation rules. Copyright (C) 2020 Inria, contributor:
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Louis Gesbert <louis.gesbert@inria.fr>.
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Licensed under the Apache License, Version 2.0 (the "License"); you may not
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use this file except in compliance with the License. You may obtain a copy of
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the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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License for the specific language governing permissions and limitations under
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the License. *)
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(** This file is only for demonstration purposes, showing a trivial use of
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backend plugins for Catala.
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The code for the Python backend already has first-class support, so there
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would be no reason to use this plugin instead *)
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open Catala_utils
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let run
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link_modules
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output
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optimize
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check_invariants
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avoid_exceptions
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closure_conversion
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options =
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let open Driver.Commands in
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let prg, _, type_ordering =
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Driver.Passes.scalc options ~link_modules ~optimize ~check_invariants
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~avoid_exceptions ~closure_conversion
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in
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let output_file, with_output = get_output_format options ~ext:".py" output in
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Message.emit_debug "Compiling program into Python...";
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Message.emit_debug "Writing to %s..."
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(Option.value ~default:"stdout" output_file);
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with_output @@ fun fmt -> Scalc.To_python.format_program fmt prg type_ordering
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let term =
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let open Cmdliner.Term in
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const run
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$ Cli.Flags.link_modules
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$ Cli.Flags.output
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$ Cli.Flags.optimize
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$ Cli.Flags.check_invariants
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$ Cli.Flags.avoid_exceptions
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$ Cli.Flags.closure_conversion
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let () =
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Driver.Plugin.register "python-plugin" term
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~doc:
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"This plugin is for demonstration purposes and should be equivalent to \
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using the built-in Python backend"
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