17ee0e400b
After moving off of Meta, Dotfiles has a greater responsibility to manage configs. Vim, Tmux, and Emacs are now within Stow's purview.
163 lines
6.1 KiB
EmacsLisp
163 lines
6.1 KiB
EmacsLisp
;;; evil-text-objects-javascript.el --- Text objects for Javascript source code
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;; Version: 1.0.0
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;; Package-Version: 20180330.1320
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;;; License:
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;; Copyright (C) 2018 Off Market Data, Inc. DBA Urbint
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;; Permission is hereby granted, free of charge, to any person obtaining a copy
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;; of this software and associated documentation files (the "Software"), to
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;; deal in the Software without restriction, including without limitation the
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;; rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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;; sell copies of the Software, and to permit persons to whom the Software is
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;; furnished to do so, subject to the following conditions:
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;;
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;; The above copyright notice and this permission notice shall be included in
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;; all copies or substantial portions of the Software.
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;;
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;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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;; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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;; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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;; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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;; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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;; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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;; IN THE SOFTWARE.
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;;; Commentary:
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;; evil-text-objects-javascript provides text-object definitions that
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;; should make working with Javascript in Emacs more enjoyable.
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;;
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;; Currently supporting:
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;; - functions
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;;
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;; See the README.md for installation instructions.
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(require 'evil)
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(require 'bind-key)
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;;; Code:
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;; functions
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(evil-define-text-object
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evil-inner-javascript-function (count &optional beg end type)
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"Inner text object for all Javascript functions."
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(call-interactively #'mark-defun)
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(narrow-to-region (region-beginning) (region-end))
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(goto-char (point-min))
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(let* ((beg (save-excursion
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(search-forward "(")
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(backward-char)
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(evil-jump-item)
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(search-forward-regexp "[({]")
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(point)))
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(end (save-excursion
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(goto-char beg)
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(evil-jump-item)
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(point))))
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(evil-range beg end type)))
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(evil-define-text-object
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evil-outer-javascript-function (count &optional beg end type)
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"Outer text object for all Javascript functions."
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(call-interactively #'mark-defun)
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(narrow-to-region (region-beginning) (region-end))
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(goto-char (point-min))
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(let* ((beg (save-excursion
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(when (looking-at "[[:space:]]")
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(evil-forward-word-begin))
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(point)))
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(end (save-excursion
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(goto-char beg)
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(search-forward "(")
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(backward-char)
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(evil-jump-item)
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(search-forward-regexp "[({]")
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(evil-jump-item)
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(forward-char)
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(point))))
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(evil-range beg end type)))
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;; comments
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(evil-define-text-object
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evil-outer-javascript-single-line-comment (count &optional beg end type)
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"Outer text object for a single-line Javascript comment."
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(let ((beg (save-excursion
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(re-search-backward "\/\/[[:space:]]*" (line-beginning-position))
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(when (looking-at "/") (point))))
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(end (save-excursion
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(end-of-line)
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(point))))
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(evil-range beg end type)))
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(evil-define-text-object
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evil-inner-javascript-single-line-comment (count &optional beg end type)
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"Inner text object for a single-line Javascript comment."
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(let ((beg (save-excursion
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(re-search-backward "\/\/[[:space:]]*" (line-beginning-position))
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(when (looking-at "/")
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(progn
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(evil-forward-char 2)
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(point)))))
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(end (save-excursion
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(end-of-line)
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(point))))
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(evil-range beg end type)))
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(defun etojs--beg-multi-line-comment ()
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"Navigate to the beginning of a multi-line Javascript comment."
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(re-search-backward "\/\\*\\*?"))
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(defun etojs--end-multi-line-comment ()
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"Navigate to the end of a multi-line Javascript comment."
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(re-search-forward "\*/"))
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(evil-define-text-object
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evil-outer-javascript-multi-line-comment (count &optional beg end type)
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"Outer text object for a multi-line Javascript comment."
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(let ((end (save-excursion
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(etojs--end-multi-line-comment)
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(point)))
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(beg (save-excursion
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(etojs--beg-multi-line-comment)
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(point))))
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(evil-range beg end type)))
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(evil-define-text-object
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evil-inner-javascript-multi-line-comment (count &optional beg end type)
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(let ((end (save-excursion
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(etojs--end-multi-line-comment)
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(forward-char -4)
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(point)))
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(beg (save-excursion
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(etojs--beg-multi-line-comment)
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(evil-next-line)
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(evil-first-non-blank)
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(forward-char 2)
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(point))))
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(evil-range beg end type)))
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;; Installation Helper
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(defun evil-text-objects-javascript/install ()
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"Register keybindings for the text objects defined herein. It is
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recommended to run this after something like `rjsx-mode-hook'. See
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README.md for additional information."
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(bind-keys :map evil-operator-state-local-map
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("af" . evil-outer-javascript-function)
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("if" . evil-inner-javascript-function)
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("ac" . evil-outer-javascript-single-line-comment)
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("ic" . evil-inner-javascript-single-line-comment)
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("aC" . evil-outer-javascript-multi-line-comment)
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("iC" . evil-inner-javascript-multi-line-comment))
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(bind-keys :map evil-visual-state-local-map
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("af" . evil-outer-javascript-function)
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("if" . evil-inner-javascript-function)
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("ac" . evil-outer-javascript-single-line-comment)
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("ic" . evil-inner-javascript-single-line-comment)
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("aC" . evil-outer-javascript-multi-line-comment)
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("iC" . evil-inner-javascript-multi-line-comment)))
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(provide 'evil-text-objects-javascript)
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;;; evil-text-objects-javascript.el ends here
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