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js-comint.el
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js-comint.el
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;;; js-comint.el --- Run javascript in an inferior process window.
;;; Copyright (C) 2008 Paul Huff
;;; Modified to use node by: Balaji S. Srinivasan <[email protected]>
;;; Author: Paul Huff <[email protected]>
;;; Maintainer: Paul Huff <[email protected]>
;;; Created: 26 May 2008
;;; Version: 0.0.1
;;; Package-Requires: ()
;;; Keywords: javascript, inferior-mode, convenience
;; js-comint.el 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, or
;; {at your option} any later version.
;; js-comint.el 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 GNU Emacs; see the file COPYING, or type `C-h C-c'. If
;; not, write to the Free Software Foundation at this address:
;; Free Software Foundation
;; 51 Franklin Street, Fifth Floor
;; Boston, MA 02110-1301
;; USA
;;; Commentary:
;;; js-comint.el lets you run an inferior javascript process in emacs,
;;; and defines a few functions for sending javascript input to it quickly.
;; Usage:
;; Put js-comint.el in your load path
;; Add (require 'js-comint) to your .emacs
;; Set inferior-js-program-command to the execution command for running your javascript REPL
;; (setq inferior-js-program-command "/path/to/executable <args>")
;; Do: M-x run-js
;; Away you go.
;; I've added the following couple of lines to my .emacs to take advantage of
;; cool keybindings for sending things to the javascript interpreter inside
;; of Steve Yegge's most excellent js2-mode.
;; (add-hook 'js2-mode-hook '(lambda ()
;; (local-set-key "\C-x\C-e" 'js-send-last-sexp)
;; (local-set-key "\C-\M-x" 'js-send-last-sexp-and-go)
;; (local-set-key "\C-cb" 'js-send-buffer)
;; (local-set-key "\C-c\C-b" 'js-send-buffer-and-go)
;; (local-set-key "\C-cl" 'js-load-file-and-go)
;; ))
;; This is version 0.0.1, so I've only tested it on my own version of emacs which is currently:
;; GNU Emacs 22.0.90.1 (i386-apple-darwin8.8.1, Carbon Version 1.6.0) of 2006-10-28
;; Not sure if it'll work anywhere else, but it doesn't require anything apple-ish, just emacs-ish.
;; Additionally, I've only tested this with rhino. I'm sure it'll probably work with spidermonkey,
;; though if it barfs let me know, and I'll update it.
;; I'm a newbie elisper, so please let me know if I'm a. doing things the wrong way, b.
;; making things work they way they shouldn't in the elisp world.
;;; History:
;;
;;; Code:
(require 'comint)
(provide 'js-comint)
;; BSS: modified to use node rather than rhino
;; http://js-comint-el.sourceforge.net
(defun js-remove-last-char (foo)
(substring foo 0 (- (length foo) 1)))
(setq js-prog "node")
(setq js-shell-path (concat (file-name-directory load-file-name) "node_emacs"))
(defcustom inferior-js-program-command js-shell-path "Path to the javascript interpreter")
(defgroup inferior-js nil
"Run a javascript process in a buffer."
:group 'inferior-js)
(defcustom inferior-js-mode-hook nil
"*Hook for customizing inferior-js mode."
:type 'hook
:group 'inferior-js)
;;;###autoload
(defun run-js (cmd &optional dont-switch-p)
"Run an inferior Javascript process, input and output via buffer `*js*'.
If there is a process already running in `*js*', switch to that buffer.
With argument, allows you to edit the command line (default is value
of `inferior-js-program-command').
Runs the hook `inferior-js-mode-hook' \(after the `comint-mode-hook'
is run).
\(Type \\[describe-mode] in the process buffer for a list of commands.)"
(interactive (list (if current-prefix-arg
(read-string "Run js: " inferior-js-program-command)
inferior-js-program-command)))
;; BSS: node and node_emacs echo the command twice, rhino not at all.
;; Thus we need different settings here for different modes. Default is
;; to have this variable NOT turned on.
(if (or (equal js-prog "node_emacs")
(equal js-prog "node"))
(setq comint-process-echoes t)
)
;; TODO: To allow node_emacs and another JS interpreter mongo to coexist,
;; need to add feature to support multiple names simultaneously for
;; inferior-js-buffer.
(if (not (comint-check-proc "*js*"))
(save-excursion (let ((cmdlist (split-string cmd)))
(set-buffer (apply 'make-comint "js" (car cmdlist)
nil (cdr cmdlist)))
(inferior-js-mode))))
(setq inferior-js-program-command cmd)
(setq inferior-js-buffer "*js*")
(if (not dont-switch-p)
(pop-to-buffer "*js*")))
(defun quote-js (mystr)
(replace-regexp-in-string "\\" "\\\\" mystr)
(replace-regexp-in-string "\"" "\\\"" )
)
;;;###autoload
(defun remove-newlines (mystr) (replace-regexp-in-string "\n" " " mystr))
;;;###autoload
(defun starts-with-js-comment (line)
(equal 0 (string-match "^[[:space:]]*//" line)))
;;;###autoload
(defun remove-js-comments (mystr)
"Remove lines starting with // and return as single line of JS code.
See: http://www.emacswiki.org/emacs/ElispCookbook
"
(mapconcat 'identity
(remove-if 'starts-with-js-comment
(split-string mystr "\n"))
" "
))
;;;###autoload
(defun js-send-region (start end)
"Send the current region to the inferior Javascript process."
(interactive "r")
;; BSS: echo for node and node_emacs
(if (or (equal js-prog "node_emacs")
(equal js-prog "node"))
(setq comint-process-echoes t)
)
(run-js inferior-js-program-command t)
(setq curwindow (selected-window))
(save-excursion (let ((jscode (remove-js-comments (buffer-substring start end))))
(set-buffer "*js*")
(insert jscode)
(comint-send-input)
))
(select-window curwindow)
)
;;;###autoload
(defun js-send-line ()
(interactive)
(save-excursion
(end-of-line)
(let ((end (point)))
(beginning-of-line)
(js-send-region (point) end))))
;;;###autoload
(defun js-send-region-and-go (start end)
"Send the current region to the inferior Javascript process."
(interactive "r")
(js-send-region start end)
(switch-to-js inferior-js-buffer))
;;;###autoload
(defun js-send-last-sexp-and-go ()
"Send the previous sexp to the inferior Js process."
(interactive)
(js-send-region-and-go (save-excursion (backward-sexp) (point)) (point)))
;;;###autoload
(defun js-send-last-sexp ()
"Send the previous sexp to the inferior Javascript process."
(interactive)
(js-send-region (save-excursion (backward-sexp) (point)) (point)))
;;;###autoload
(defun js-send-buffer ()
"Send the buffer to the inferior Javascript process."
(interactive)
(js-send-region (point-min) (point-max)))
;;;###autoload
(defun js-send-buffer-and-go ()
"Send the buffer to the inferior Javascript process."
(interactive)
(js-send-region-and-go (point-min) (point-max)))
;;;###autoload
(defun js-load-file (filename)
"Load a file in the javascript interpreter."
(interactive "f")
(let ((filename (expand-file-name filename)))
(run-js inferior-js-program-command t)
(comint-send-string inferior-js-buffer (concat "load(\"" filename "\")\n"))))
;;;###autoload
(defun js-load-file-and-go (filename)
"Load a file in the javascript interpreter."
(interactive "f")
(let ((filename (expand-file-name filename)))
(run-js inferior-js-program-command t)
(comint-send-string inferior-js-buffer (concat "load(\"" filename "\")\n"))
(switch-to-js inferior-js-buffer)))
;;;###autoload
(defun switch-to-js (eob-p)
"Switch to the javascript process buffer.
With argument, position cursor at end of buffer."
(interactive "P")
(if (or (and inferior-js-buffer (get-buffer inferior-js-buffer))
(js-interactively-start-process))
(pop-to-buffer inferior-js-buffer)
(error "No current process buffer. See variable `inferior-js-buffer'"))
(when eob-p
(push-mark)
(goto-char (point-max))))
(defvar inferior-js-buffer)
(defvar inferior-js-mode-map
(let ((m (make-sparse-keymap)))
;;(define-key m "\C-x\C-e" 'js-send-last-sexp)
(define-key m "\C-cl" 'js-load-file)
m))
;;;###autoload
(define-derived-mode inferior-js-mode comint-mode "Inferior Javascript"
"Major mode for interacting with an inferior javascript process.
The following commands are available:
\\{inferior-js-mode-map}
A javascript process can be fired up with M-x run-js.
Customization: Entry to this mode runs the hooks on comint-mode-hook and
inferior-js-mode-hook (in that order).
You can send text to the inferior Javascript process from othber buffers containing
Javascript source.
switch-to-js switches the current buffer to the Javascript process buffer.
js-send-region sends the current region to the Javascript process.
"
(use-local-map inferior-js-mode-map)
)