From 382ee49700c4b4ee78ba95b2e86866ebd3b35d74 Mon Sep 17 00:00:00 2001
From: Emilio Jesus Gallego Arias
Date: Wed, 7 Mar 2018 01:33:17 +0100
Subject: [stm] Make toplevels standalone executables.

We turn coqtop "plugins" into standalone executables, which will be
installed in `COQBIN` and located using the standard `PATH`
mechanism. Using dynamic linking for `coqtop` customization didn't
make a lot of sense, given that only one of such "plugins" could be
loaded at a time. This cleans up some code and solves two problems:

- `coqtop` needing to locate plugins,
- dependency issues as plugins in `stm` depended on files in `toplevel`.

In order to implement this, we do some minor cleanup of the toplevel
API, making it functional, and implement uniform build rules. In
particular:

- `stm` and `toplevel` have become library-only directories,
- a new directory, `topbin`, contains the new executables,
- 4 new binaries have been introduced, for coqide and the stm.
- we provide a common and cleaned up way to locate toplevels.
---
 toplevel/workerLoop.ml | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 toplevel/workerLoop.ml

(limited to 'toplevel/workerLoop.ml')

diff --git a/toplevel/workerLoop.ml b/toplevel/workerLoop.ml
new file mode 100644
index 0000000000..ee6d5e8843
--- /dev/null
+++ b/toplevel/workerLoop.ml
@@ -0,0 +1,29 @@
+(************************************************************************)
+(*         *   The Coq Proof Assistant / The Coq Development Team       *)
+(*  v      *   INRIA, CNRS and contributors - Copyright 1999-2018       *)
+(* <O___,, *       (see CREDITS file for the list of authors)           *)
+(*   \VV/  **************************************************************)
+(*    //   *    This file is distributed under the terms of the         *)
+(*         *     GNU Lesser General Public License Version 2.1          *)
+(*         *     (see LICENSE file for the text of the license)         *)
+(************************************************************************)
+
+let rec parse = function
+  | "--xml_format=Ppcmds" :: rest -> parse rest
+  | x :: rest -> x :: parse rest
+  | [] -> []
+
+let arg_init init ~opts extra_args =
+  let extra_args = parse extra_args in
+  Flags.quiet := true;
+  init ();
+  CoqworkmgrApi.(init !async_proofs_worker_priority);
+  opts, extra_args
+
+let start ~init ~loop =
+  let open Coqtop in
+  let custom = {
+    init = arg_init init;
+    run = (fun ~opts:_ ~state:_ -> loop ());
+  } in
+  start_coq custom
-- 
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