emacs-matlab/company-matlab-shell.el
Eric Ludlam 9eaf9e7752 Overview:
Move large chunks of matlab.el to matlab-complete.el,
matlab-shell.el, and matlab-topic.el.
Update existing .el files to require new files as needed.
Update Makefiles to no longer have Makefile check.

matlab.el: Settings updates:
(matlab-mode-version): Update to 4.0 (based on expectations of this change.)
(matlab-functions-have-end): set to t.  Fix doc.
(matlab-functions-have-end-p): If guess, then guess, otherwise
base it on matlab-functions-have-end.
(matlab-fill-code): set to nil.
(matlab-keyword-list, matlab-block-end-pre-if): remove endfunction
(matlab-calculate-indentation): remove matlab-ltype-endfunction-comm.

matlab.el: code moving
(matlab-frame-init): moved earlier near keymaps.
2019-11-08 20:49:50 -05:00

88 lines
3.6 KiB
EmacsLisp
Executable file

;;; company-matlab-shell.el --- a matlab-shell-mode completion back-end for AUCTeX
;;
;; Copyright (C) 2016,2017,2019 The MathWorks Inc.
;; Copyright (C) 2009 David Engster
;;
;; 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 2
;; 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/>.
(condition-case nil
(require 'company)
(error nil))
(eval-when-compile (require 'cl))
(require 'matlab)
(require 'matlab-shell)
(defvar company-matlab-shell--ci (make-hash-table :test 'equal)
"Private variable for company-matlab-shell completion info")
(defun company-matlab-shell-grab-completion-substr ()
"Return the completion substring of the command that is to be
completed in `matlab-shell', or 'stop if completions can't be
performed at the current point."
(when (eq major-mode 'matlab-shell-mode)
(if (not (matlab-on-prompt-p))
'stop ;; tell company can't complete when point is not in the prompt
(let ((lastcmd (buffer-substring (point) (matlab-point-at-eol))))
;; Kill the rest of the line since completion only works at the end of the line and
;; we'd like it to complete within a line. For example,
;; h=figure;
;; h.set('Vis','on')
;; ^
;; TAB here results in:
;; h.set('Visible','on')
(delete-region (point) (matlab-point-at-eol))
(let* ((buf-name (buffer-name (current-buffer)))
(ci (matlab-shell-get-completion-info))
(common-substr (cdr (assoc 'common-substr ci)))
(did-completion (cdr (assoc 'did-completion ci))))
;; restore the killed part of the line
(let ((orig-pt (point)))
(insert lastcmd)
(goto-char orig-pt))
;; If did-completion, then matlab-shell-get-completion-info updated the
;; *MATLAB* buffer by deleting text and calling (insert replacement-text), and
;; we have no more completion info.
(if did-completion
;; Tell company to abort completion. This causes "Cannot complete at point" and
;; there doesn't seem to be a way to protect against this message.
nil
(puthash buf-name ci company-matlab-shell--ci)
;; command to be completed
common-substr
))))))
(defun company-matlab-shell-get-completions ()
(let* ((ci (if (eq major-mode 'matlab-shell-mode)
(gethash (buffer-name (current-buffer)) company-matlab-shell--ci)))
(completions (if ci (cdr (assoc 'completions ci)))))
(if ci (remhash (buffer-name (current-buffer)) company-matlab-shell--ci))
(mapcar 'car completions)))
;;;###autoload
(defun company-matlab-shell (command &optional arg &rest ignored)
"A `company-mode' completion backend for `matlab-shell'."
(interactive (list 'interactive))
(case command
('interactive (if (fboundp 'company-begin-backend) ;; quiet warning when no company
(company-begin-backend 'company-matlab-shell)
(error "company-begin-backend is missing")))
('prefix (company-matlab-shell-grab-completion-substr))
('candidates (company-matlab-shell-get-completions))
('sorted t)))
(provide 'company-matlab-shell)
;;; company-matlab-shell.el ends here