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106 lines
3.9 KiB
106 lines
3.9 KiB
;;; highlight-uses-mode.el --- Mode for highlighting uses -*- lexical-binding: t -*-
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;; Copyright (c) 2014 Chris Done. All rights reserved.
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;; This file 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, or (at your option)
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;; any later version.
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;; This file 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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;;; Code:
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(require 'cl-lib)
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(defvar highlight-uses-mode-map
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(let ((map (make-sparse-keymap)))
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(define-key map (kbd "TAB") 'highlight-uses-mode-next)
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(define-key map (kbd "S-TAB") 'highlight-uses-mode-prev)
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(define-key map (kbd "<backtab>") 'highlight-uses-mode-prev)
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(define-key map (kbd "RET") 'highlight-uses-mode-stop-here)
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(define-key map (kbd "C-g") 'highlight-uses-mode)
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map)
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"Keymap for using `highlight-uses-mode'.")
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(defvar-local highlight-uses-mode-point nil)
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;;;###autoload
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(define-minor-mode highlight-uses-mode
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"Minor mode for highlighting and jumping between uses."
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:lighter " Uses"
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:keymap highlight-uses-mode-map
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(if highlight-uses-mode
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(setq highlight-uses-mode-point (point))
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(when highlight-uses-mode-point
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(goto-char highlight-uses-mode-point)))
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(remove-overlays (point-min) (point-max) 'highlight-uses-mode-highlight t))
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(defun highlight-uses-mode-replace ()
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"Replace all highlighted instances in the buffer with something
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else."
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(interactive)
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(save-excursion
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(goto-char (point-min))
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(let ((o (highlight-uses-mode-next)))
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(when o
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(let ((replacement (read-from-minibuffer (format "Replace uses %s with: "
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(buffer-substring
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(overlay-start o)
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(overlay-end o))))))
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(while o
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(goto-char (overlay-start o))
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(delete-region (overlay-start o)
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(overlay-end o))
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(insert replacement)
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(setq o (highlight-uses-mode-next))))))))
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(defun highlight-uses-mode-stop-here ()
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"Stop at this point."
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(interactive)
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(setq highlight-uses-mode-point (point))
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(highlight-uses-mode -1))
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(defun highlight-uses-mode-next ()
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"Jump to next result."
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(interactive)
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(let ((os (sort (cl-remove-if (lambda (o)
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(or (<= (overlay-start o) (point))
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(not (overlay-get o 'highlight-uses-mode-highlight))))
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(overlays-in (point) (point-max)))
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(lambda (a b)
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(< (overlay-start a)
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(overlay-start b))))))
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(when os
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(goto-char (overlay-start (car os)))
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(car os))))
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(defun highlight-uses-mode-prev ()
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"Jump to previous result."
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(interactive)
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(let ((os (sort (cl-remove-if (lambda (o)
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(or (>= (overlay-end o) (point))
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(not (overlay-get o 'highlight-uses-mode-highlight))))
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(overlays-in (point-min) (point)))
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(lambda (a b)
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(> (overlay-start a)
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(overlay-start b))))))
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(when os
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(goto-char (overlay-start (car os)))
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(car os))))
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(defun highlight-uses-mode-highlight (start end)
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"Make a highlight overlay at the given span."
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(let ((o (make-overlay start end)))
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(overlay-put o 'priority 999)
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(overlay-put o 'face 'isearch)
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(overlay-put o 'highlight-uses-mode-highlight t)))
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(provide 'highlight-uses-mode)
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