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Diffstat (limited to 'elpa/js2-highlight-vars-20170418.1829/js2-highlight-vars.el')
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diff --git a/elpa/js2-highlight-vars-20170418.1829/js2-highlight-vars.el b/elpa/js2-highlight-vars-20170418.1829/js2-highlight-vars.el new file mode 100644 index 0000000..5eb754c --- /dev/null +++ b/elpa/js2-highlight-vars-20170418.1829/js2-highlight-vars.el @@ -0,0 +1,210 @@ +;;; js2-highlight-vars.el --- highlight occurrences of the variable under cursor + +;; Copyright (C) 2009 Free Software Foundation, Inc. +;; Author: Mihai Bazon <mihai.bazon@gmail.com> +;; Version: 0.1.0 +;; Package-Version: 20170418.1829 +;; Package-Commit: e3bb177e50f76b272e8073a94d4f46be6512a163 +;; URL: http://mihai.bazon.net/projects/editing-javascript-with-emacs-js2-mode/js2-highlight-vars-mode +;; Package-Requires: ((emacs "24.4") (js2-mode "20150908")) + +;;; Commentary: +;; +;; This is a minor mode on top of js2-mode which highlights all +;; occurrences of the variable under the cursor within its defining +;; scope. + +;;; Installation: +;; +;; Install this package from MELPA using `M-x install-package` and put +;; the following in your ~/.emacs.d/init.el: +;; (eval-after-load "js2-highlight-vars-autoloads" +;; '(add-hook 'js2-mode-hook (lambda () (js2-highlight-vars-mode)))) +;; +;; If you aren't already using MELPA, see: +;; http://melpa.milkbox.net/#/getting-started + +;; GNU Emacs 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. + +;; GNU Emacs 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. If not, see <http://www.gnu.org/licenses/>. + +;;; Code: + +(require 'js2-mode) + +(js2-deflocal js2-highlight-vars-mode nil) + +(defface js2-highlight-vars-face + `((((class color) (background light)) + (:background "light green")) + (((class color) (background dark)) + (:background "royal blue"))) + "Face for highlighting variables" + :group 'js2-mode) + +(defface js2-highlight-vars-second-face + `((((class color) (background light)) + (:background "light pink")) + (((class color) (background dark)) + (:background "blue violet"))) + "Face for highlighting variables" + :group 'js2-mode) + +(defvar js2-highlight-vars-local-keymap + (let ((map (make-sparse-keymap))) + (define-key map (kbd "M-n") 'js2-highlight-vars-next) + (define-key map (kbd "C-<down>") 'js2-highlight-vars-next) + (define-key map (kbd "M-p") 'js2-highlight-vars-prev) + (define-key map (kbd "C-<up>") 'js2-highlight-vars-prev) + (define-key map (kbd "M-r") 'js2-highlight-vars-rename) + map)) + +(js2-deflocal js2--highlight-vars-tokens nil) +(js2-deflocal js2--highlight-vars-current-token nil) +(js2-deflocal js2--highlight-vars-current-token-name nil) +(js2-deflocal js2--highlight-vars-post-command-timer nil) + +(defun js2--do-highlight-vars () + "Highlight variable under cursor within the defining scope" + (interactive) + (setq js2--highlight-vars-post-command-timer nil) + (unless js2--highlight-vars-tokens + (let ((node (js2-node-at-point)) + (tokens nil) + name + scope) + (unless (js2-name-node-p node) + (setq node (js2-node-at-point (- (point) 1)))) + (when (and node (js2-name-node-p node)) + (setq scope (js2-node-get-enclosing-scope node) + name (js2-name-node-name node) + js2--highlight-vars-current-token (js2-node-abs-pos node) + js2--highlight-vars-current-token-name name) + (setq scope (js2-get-defining-scope scope name)) + (with-silent-modifications + (js2-visit-ast + scope + (lambda (node end-p) + (when (and (not end-p) + (js2-name-node-p node) + (string= name (js2-name-node-name node))) + (let* ((beg (js2-node-abs-pos node)) + (end (+ beg (js2-node-len node))) + (new-scope (js2-node-get-enclosing-scope node)) + (new-scope (js2-get-defining-scope new-scope name)) + (ovl (make-overlay beg end))) + (add-to-list 'tokens beg t) + (overlay-put ovl 'keymap js2-highlight-vars-local-keymap) + (overlay-put ovl 'face + (if (eq new-scope scope) + 'js2-highlight-vars-face + 'js2-highlight-vars-second-face)) + (overlay-put ovl 'evaporate t) + (overlay-put ovl 'js2-highlight-vars t))) + t))) + (setq js2--highlight-vars-tokens tokens))))) + +(defun js2-highlight-vars-next () + (interactive) + (let ((inhibit-point-motion-hooks t) + (diff (- (point) js2--highlight-vars-current-token)) + (next (catch 'done + (dolist (pos js2--highlight-vars-tokens) + (when (> pos (point)) + (throw 'done pos)))))) + (when next + (setq js2--highlight-vars-current-token next) + (goto-char next) + (forward-char diff)))) + +(defun js2-highlight-vars-prev () + (interactive) + (let ((inhibit-point-motion-hooks t) + (diff (- (point) js2--highlight-vars-current-token)) + (prev (catch 'done + (dolist (pos (reverse js2--highlight-vars-tokens)) + (when (and (< pos (point)) + (not (= pos js2--highlight-vars-current-token))) + (throw 'done pos)))))) + (when prev + (setq js2--highlight-vars-current-token prev) + (goto-char prev) + (forward-char diff)))) + +(defun js2-highlight-vars-rename (new-name) + (interactive "*sRename variable to: ") + (let ((len (length js2--highlight-vars-current-token-name)) + (inhibit-point-motion-hooks t) + (ovl (make-overlay 1 1)) + (all nil) + doit) + (unwind-protect + (progn + (overlay-put ovl 'face 'highlight) + (dolist (pos (mapcar (lambda(pos) + (let ((m (make-marker))) + (set-marker m pos))) js2--highlight-vars-tokens)) + (goto-char pos) + (move-overlay ovl pos (+ pos len)) + (setq doit (if all + ?y + (read-char "Replace this occurrence? (y/n/!)"))) + (when (= doit ?!) + (setq all t + doit ?y)) + (when (= doit ?y) + (insert new-name) + (delete-char len)))) + (delete-overlay ovl)))) + +(defun js2--unhighlight-vars (&rest ignore) + (setq js2--highlight-vars-tokens nil + js2--highlight-vars-current-token nil) + (remove-overlays (point-min) (point-max) + 'js2-highlight-vars t)) + +(defun js2-highlight-vars-post-command-hook () + (ignore-errors + (let* ((overlays (overlays-at (point))) + (ovl (and overlays + (catch 'found + (dolist (ovl overlays) + (when (overlay-get ovl 'js2-highlight-vars) + (throw 'found ovl))) + nil)))) + (if (and ovl + (string= js2--highlight-vars-current-token-name + (buffer-substring (overlay-start ovl) + (overlay-end ovl)))) + (setq js2--highlight-vars-current-token (overlay-start ovl)) + (js2--unhighlight-vars) + (when js2--highlight-vars-post-command-timer + (cancel-timer js2--highlight-vars-post-command-timer)) + (setq js2--highlight-vars-post-command-timer + (run-with-timer 0.5 nil 'js2--do-highlight-vars)))))) + +;;;###autoload +(define-minor-mode js2-highlight-vars-mode + "Minor mode that highlights occurrences of the variable under +cursor in js2-mode buffers" + nil " vars" nil + (if js2-highlight-vars-mode + (progn + (add-hook 'post-command-hook 'js2-highlight-vars-post-command-hook nil t)) + (remove-hook 'post-command-hook 'js2-highlight-vars-post-command-hook t) + (js2--unhighlight-vars) + (kill-local-variable js2--highlight-vars-tokens) + (kill-local-variable js2--highlight-vars-current-token))) + +(provide 'js2-highlight-vars) + +;;; js2-highlight-vars.el ends here |