A JavaScript development environment for Emacs https://indium.readthedocs.io
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;;; indium-scratch.el --- Scratch buffer for JS evaluation -*- lexical-binding: t; -*-
;; Copyright (C) 2016-2018 Nicolas Petton
;; Author: Nicolas Petton <nicolas@petton.fr>
;; Keywords: javascript, tools
;; 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/>.
;;; Commentary:
;; Open a scratch buffer with `indium-scratch'.
;;; Code:
(require 'indium-interaction)
(require 'indium-repl)
(eval-and-compile (require 'indium-structs))
;;;###autoload
(defun indium-scratch ()
"Pop to the scratch buffer.
If no scratch buffer exists for the current connection, create
one first."
(interactive)
(pop-to-buffer (indium-scratch-get-buffer-create)))
(defun indium-scratch-get-buffer-create ()
"Return a scratch buffer for the current connection.
If no buffer exists, create one."
(let* ((bufname (indium-scratch-buffer-name))
(buf (get-buffer bufname)))
(unless buf
(setq buf (get-buffer-create bufname))
(indium-scratch-setup-buffer buf))
buf))
(defun indium-scratch-buffer-name ()
"Return the scratch buffer name."
"*JS scratch*")
(defun indium-scratch-setup-buffer (buffer)
"Setup the scratch BUFFER."
(with-current-buffer buffer
(js2-mode)
(indium-interaction-mode)
(setq-local company-backends '(company-indium-repl))
(indium-scratch-insert-welcome-message)))
(defun indium-scratch-insert-welcome-message ()
"Insert a welcome message to help use the scratch buffer."
(insert "// This buffer is for JavaScript evaluation.
// Press C-x C-e to evaluate the last expression.
// Press C-c M-i to inspect the last expression.\n\n"))
(provide 'indium-scratch)
;;; indium-scratch.el ends here