A JavaScript development environment for Emacs
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153 lines
5.3 KiB
153 lines
5.3 KiB
;;; jade-inspector.el --- Inspector for JavaScript objects -*- lexical-binding: t; -*-
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;; Copyright (C) 2016 Nicolas Petton
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;; Author: Nicolas Petton <nicolas@petton.fr>
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;; Keywords: convenience, tools, javascript
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;;
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;;; Code:
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(require 'seq)
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(require 'map)
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(require 'jade-render)
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(require 'jade-faces)
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(defvar jade-inspector-history nil)
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(make-variable-buffer-local 'jade-inspector-history)
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(declare jade-backend-get-properties)
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(defun jade-inspector-inspect (reference)
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"Open an inspector on the remote object REFERENCE."
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(let ((objectid (map-elt reference 'objectid)))
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(if objectid
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(jade-backend-get-properties (jade-backend)
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objectid
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(lambda (properties)
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(jade-inspector--inspect-properties properties reference)))
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(message "Cannot inspect %S" (map-elt reference 'description)))))
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(defun jade-inspector--inspect-properties (properties reference)
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(let ((buf (jade-inspector-get-buffer-create))
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(inhibit-read-only t))
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(with-current-buffer buf
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(jade-inspector-push-to-history reference)
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(save-excursion
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(erase-buffer)
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(jade-render-keyword (jade-description-string reference t))
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(insert "\n\n")
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(jade-render-properties properties)))
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(pop-to-buffer buf)))
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(defun jade-inspector-keybinding (command)
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(key-description (car (where-is-internal command))))
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(defun jade-inspector-pop ()
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(interactive)
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(if (cdr jade-inspector-history)
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(progn
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(pop jade-inspector-history)
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(funcall #'jade-inspector-inspect (car jade-inspector-history)))
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(message "No previous object to inspect")))
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(defun jade-inspector-goto-reference (direction)
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(let* ((delta (pcase direction
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(`next 1)
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(`previous -1)))
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(reference (save-excursion
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(forward-line delta)
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(when (eq direction 'previous)
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(end-of-line))
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(while (and (not (eobp))
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(not (get-text-property (point) 'jade-reference)))
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(forward-char delta))
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(when (get-text-property (point) 'jade-reference)
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(point)))))
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(when reference
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(goto-char reference)
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;; go to the first char of the reference
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(while (get-text-property (point) 'jade-reference)
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(backward-char 1))
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(forward-char 1))))
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(defun jade-inspector-next-reference ()
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(interactive)
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(jade-inspector-goto-reference 'next))
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(defun jade-inspector-previous-reference ()
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(interactive)
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(jade-inspector-goto-reference 'previous))
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(defun jade-inspector-refresh ()
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(interactive)
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(when jade-inspector-history
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(funcall #'jade-inspector-inspect (car jade-inspector-history))))
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(defun jade-inspector-push-to-history (reference)
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(unless (string= (map-elt reference 'objectid)
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(map-elt (car jade-inspector-history) 'objectid))
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(push reference jade-inspector-history)))
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(defun jade-inspector-get-buffer ()
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(get-buffer (jade-inspector-buffer-name)))
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(defun jade-inspector-get-buffer-create ()
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"Return an inspector buffer for the current connection.
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If no buffer exists, create one."
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(let ((buf (jade-inspector-get-buffer)))
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(unless buf
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(setq buf (get-buffer-create (jade-inspector-buffer-name)))
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(jade-inspector-setup-buffer buf jade-connection))
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buf))
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(defun jade-inspector-setup-buffer (buffer connection)
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"Setup the inspector BUFFER for CONNECTION."
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(with-current-buffer buffer
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(jade-inspector-mode)
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(setq-local jade-connection connection)))
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(defun jade-inspector-buffer-name ()
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"Return the inspector buffer name for the current connection."
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(concat "*JS Inspector " (map-elt jade-connection 'url) "*"))
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(defvar jade-inspector-mode-map
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(let ((map (make-sparse-keymap)))
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(define-key map [return] #'jade-follow-link)
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(define-key map "\C-m" #'jade-follow-link)
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(define-key map [mouse-1] #'jade-follow-link)
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(define-key map "l" #'jade-inspector-pop)
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(define-key map "g" #'jade-inspector-refresh)
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(define-key map "n" #'jade-inspector-next-reference)
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(define-key map "p" #'jade-inspector-previous-reference)
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(define-key map [tab] #'jade-inspector-next-reference)
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(define-key map [backtab] #'jade-inspector-previous-reference)
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map))
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(define-derived-mode jade-inspector-mode special-mode "Inspector"
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"Major mode for inspecting JavaScript objects.
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\\{jade-inspector-mode-map}"
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(setq buffer-read-only t)
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(font-lock-ensure)
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(setq-local electric-indent-chars nil)
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(setq-local truncate-lines t))
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(provide 'jade-inspector)
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;;; jade-inspector.el ends here
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