spacemacs/layers/+lang/factor/funcs.el

142 lines
5.8 KiB
EmacsLisp

;;; funcs.el --- Factor Layer functions File for Spacemacs
;;
;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
;;
;; Author: timor <timor.dd@googlemail.com>
;; URL: https://github.com/syl20bnr/spacemacs
;;
;; This file is not part of GNU Emacs.
;;
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
(autoload 'feature-file "loadhist")
(autoload 'file-requires "loadhist")
(defvar factor--ui-listener-process nil
"Holds the factor process which serves the current fuel connection.")
(defun factor//fuel-stack-effect ()
"Small wrapper around factors stack effect help. If region is
active, use that, otherwise use sexp under point."
(interactive)
(if (region-active-p)
(call-interactively 'fuel-stack-effect-region)
(call-interactively 'fuel-stack-effect-sexp)))
(defun factor//fuel-elisp-dir ()
"Get the directory of the currently loaded fuel implementation."
(expand-file-name (concat (feature-file 'factor-mode)
"/..")))
(defun factor//fuel-feature-p (fuel-directory feature)
"Check if FEATURE is provided by a file under FUEL-DIRECTORY."
(string-prefix-p fuel-directory (feature-file feature)))
(defun factor//loaded-fuel-features ()
"Recursively determine all loaded features that belong to the
currently loaded fuel implementation."
(cl-loop with fuel-directory = (factor//fuel-elisp-dir)
for fuel-features = '(fuel-mode factor-mode)
then (cl-union fuel-features new-features)
for next-features = (cl-remove-duplicates
(cl-reduce 'cl-union
(mapcar (lambda(f) (file-requires (feature-file f)))
fuel-features)))
for new-features = (cl-remove-if-not
(lambda(f) (and (featurep f)
(factor//fuel-feature-p fuel-directory f)))
(cl-set-difference next-features fuel-features))
while new-features
finally (return fuel-features)))
(defun factor//unload-fuel ()
"Close fuel connection and unload fuel code.
Will stop current fuel connection if applicable."
(when (and (featurep 'fuel-listener)
fuel-listener--buffer)
(kill-buffer fuel-listener--buffer))
(cl-loop for f in (factor//loaded-fuel-features) do
(unload-feature f t)))
(defun factor//load-fuel-from-path (path)
"Load emacs lisp fuel implementation from the specified PATH."
(let ((load-path (cons path load-path)))
(require 'fuel-mode)
(require 'factor-mode)))
(defun factor//reload-fuel-from-path (path)
"Unload current emacs lisp fuel implementation and load the on from PATH.
Since unloading switches buffers which were in factor-mode back
to fundamental mode, this re-enables factor-mode in these buffers
afterwards.
Only reloads if currently loaded factor mode belongs to a different factor root.
"
(when (not (string-equal (factor//fuel-elisp-dir)
path))
(let ((factor-buffers (cl-loop for b being the buffers
if (eq (buffer-local-value 'major-mode b)
'factor-mode)
collect b)))
(factor//unload-fuel)
(message "Reloading fuel mode from %s" path)
(factor//load-fuel-from-path path)
(cl-loop for b in factor-buffers do
(with-current-buffer b
(factor-mode))))))
(defun factor/start-connect-factor (factor-binary factor-image fuel-path &optional cmd-line-options)
"Start a graphical Factor listener at FACTOR-ROOT.
If non-nil IMAGE-NAME denotes a path to the desired factor image
relative to FACTOR-ROOT, if no absolute path is given. Connect to
it using the fuel-mode implementation in FUEL-PATH, if non-nil. Returns the
process object.
Will append the value of `factor-ui-listener-args' to the command line options.
Returns the process object.
"
(when fuel-path
(factor//reload-fuel-from-path fuel-path))
(setq factor--ui-listener-process
(start-process-shell-command
"Factor-UI-Listener" "*Factor-UI-Listener*"
(format "%s -image='%s' -e='USING: fuel.remote vocabs.loader ; fuel-start-remote-listener* \"ui.tools\" run ' %s"
factor-binary
factor-image
(or cmd-line-options "")))))
(defun factor/start-ui-listener ()
"Run the graphical factor listener with fuel support and connect to it.
If `fuel-factor-root-dir' is set,
unloads the current fuel implementation and reloads fuel from there.
"
(interactive)
(when (and (process-live-p factor--ui-listener-process)
(y-or-n-p "Graphical listener already running. Kill process?"))
(delete-process factor--ui-listener-process))
(let* ((factor-process (factor/start-connect-factor
(fuel-listener-factor-binary)
(fuel-listener-factor-image)
(expand-file-name "misc/fuel" fuel-factor-root-dir))))
;; This check will only catch immediate failures:
(unless (process-live-p factor-process)
(error "Listener process exited with code: %d"
(process-exit-status factor-process)))))