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spacemacs/layers/+lang/purescript/funcs.el
2021-08-20 03:48:29 +00:00

80 lines
3.2 KiB
EmacsLisp

;;; funcs.el --- PureScript Layer functions File for Spacemacs
;;
;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
;;
;; Author: nobv <6e6f6276@gmail.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/>.
(defun spacemacs//purescript-setup-backend ()
"Conditionally setup purescript backend."
(when (eq purescript-backend 'lsp)
(lsp-deferred)))
(defun spacemacs//purescript-setup-company ()
"Conditionally setup company based on backend."
(pcase purescript-backend
('lsp
(spacemacs|add-company-backends ;; Activate lsp company explicitly to activate
:backends company-capf ;; standard backends as well
:modes purescript-mode))
('psc-ide
(spacemacs|add-company-backends
:backends company-psc-ide-backend
:modes purescript-mode))))
(defun spacemacs/purescript-format ()
"Call formatting tool specified in `purescript-fmt-tool'."
(interactive)
(call-interactively
(pcase purescript-fmt-tool
('purs-tidy 'spacemacs/purescript-purs-tidy-format-buffer)
(_ (user-error
"%s isn't a valid purescript formatter. Possible values are 'purs-tidy"
purescript-fmt-tool)))))
(defun spacemacs/purescript-purs-tidy-format-buffer ()
"Format buffer with purs-tidy."
(interactive)
(if (executable-find "purs-tidy")
(let* ((extension (file-name-extension (or buffer-file-name "tmp.purs") t))
(tmpfile (make-temp-file "~fmt-tmp" nil extension))
(coding-system-for-read 'utf-8)
(coding-system-for-write 'utf-8)
(outputbuf (get-buffer-create "*~fmt-tmp.purs*")))
(unwind-protect
(progn
(with-current-buffer outputbuf (erase-buffer))
(write-region nil nil tmpfile)
(if (zerop (apply #'call-process-region nil nil "purs-tidy" nil
`(,outputbuf ,tmpfile) nil
`("format")))
(let ((p (point)))
(save-excursion
(with-current-buffer (current-buffer)
(replace-buffer-contents outputbuf)))
(goto-char p)
(message "formatted.")
(kill-buffer outputbuf))
(message "Formatting failed!")
(display-buffer outputbuf)))
(delete-file tmpfile)))
(error "purs-tidy not found. Run \"npm install -g purs-tidy\"")))
(defun spacemacs/purescript-fmt-before-save-hook ()
(add-hook 'before-save-hook 'spacemacs/purescript-format t t))