mirror of
https://github.com/CatalaLang/catala.git
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52b1c25d50
The upside of this is that each command can define specific flags ; there is a small loss of backwards-compatibility in that the command needs to be the first argument. `catala --help` will now only show a summary of commands, with more specific manpages shown on `catala CMD --help`. Another point is that the plugin interface is extended to allow plugins to be registered as subcommands and have their own flags (this will be very useful for adding flags to the lazy/dot/explanation plugin that has many options). Note that no efforts has yet been made to specialise the options, the previous type was just made global for all subcommands.
77 lines
2.2 KiB
OCaml
77 lines
2.2 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) 2022 Inria, OCamlPro;
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contributors: Louis Gesbert <louis.gesbert@ocamlpro.com>
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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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open Catala_utils
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type t = Cmdliner.Cmd.Exit.code Cmdliner.Cmd.t
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let backend_plugins : (string, t) Hashtbl.t = Hashtbl.create 17
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let register t =
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Hashtbl.replace backend_plugins
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(String.lowercase_ascii (Cmdliner.Cmd.name t))
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t
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let list () = Hashtbl.to_seq_values backend_plugins |> List.of_seq
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module PluginAPI = struct
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open Cmdliner
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let register_generic info term = register (Cmd.v info term)
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(* For plugins relying on the standard [Driver] *)
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type 'ast plugin_apply_fun_typ =
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source_file:Pos.input_file ->
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output_file:string option ->
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scope:Shared_ast.ScopeName.t option ->
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'ast ->
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Scopelang.Dependency.TVertex.t list ->
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unit
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end
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type 'ast gen = {
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name : string;
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extension : string;
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apply : 'ast PluginAPI.plugin_apply_fun_typ;
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}
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type handler =
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| Dcalc of Shared_ast.untyped Dcalc.Ast.program gen
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| Lcalc of Shared_ast.untyped Lcalc.Ast.program gen
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| Scalc of Scalc.Ast.program gen
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let load_file f =
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try
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Dynlink.loadfile f;
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Message.emit_debug "Plugin %S loaded" f
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with e ->
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Message.emit_warning "Could not load plugin %S: %s" f (Printexc.to_string e)
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let rec load_dir d =
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let dynlink_exts =
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if Dynlink.is_native then [".cmxs"] else [".cmo"; ".cma"]
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in
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Array.iter
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(fun f ->
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if f.[0] = '.' then ()
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else
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let f = Filename.concat d f in
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if Sys.is_directory f then load_dir f
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else if List.exists (Filename.check_suffix f) dynlink_exts then
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load_file f)
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(Sys.readdir d)
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