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authormattkae <mattkae@protonmail.com>2022-06-07 08:23:47 -0400
committermattkae <mattkae@protonmail.com>2022-06-07 08:23:47 -0400
commitbd18a38c2898548a3664a9ddab9f79c84f2caf4a (patch)
tree95b9933376770381bd8859782ae763be81c2d72b /elpa/company-20220326.48/company-dabbrev.el
parentb07628dddf418d4f47b858e6c35fd3520fbaeed2 (diff)
parentef160dea332af4b4fe5e2717b962936c67e5fe9e (diff)
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-;;; company-dabbrev.el --- dabbrev-like company-mode completion backend -*- lexical-binding: t -*-
-
-;; Copyright (C) 2009-2011, 2013-2018, 2021 Free Software Foundation, Inc.
-
-;; Author: Nikolaj Schumacher
-
-;; This file is part of GNU Emacs.
-
-;; 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 <https://www.gnu.org/licenses/>.
-
-
-;;; Commentary:
-;;
-
-;;; Code:
-
-(require 'company)
-(require 'cl-lib)
-
-(defgroup company-dabbrev nil
- "dabbrev-like completion backend."
- :group 'company)
-
-(defcustom company-dabbrev-other-buffers 'all
- "Determines whether `company-dabbrev' should search other buffers.
-If `all', search all other buffers, except the ignored ones. If t, search
-buffers with the same major mode. See also `company-dabbrev-time-limit'."
- :type '(choice (const :tag "Off" nil)
- (const :tag "Same major mode" t)
- (const :tag "All" all)))
-
-(defcustom company-dabbrev-ignore-buffers "\\`[ *]"
- "Regexp matching the names of buffers to ignore.
-Or a function that returns non-nil for such buffers."
- :type '(choice (regexp :tag "Regexp")
- (function :tag "Predicate"))
- :package-version '(company . "0.9.0"))
-
-(defcustom company-dabbrev-time-limit .1
- "Determines how many seconds `company-dabbrev' should look for matches."
- :type '(choice (const :tag "Off" nil)
- (number :tag "Seconds")))
-
-(defcustom company-dabbrev-char-regexp "\\sw"
- "A regular expression matching the characters `company-dabbrev' looks for."
- :type 'regexp)
-
-(defcustom company-dabbrev-ignore-case 'keep-prefix
- "Non-nil to ignore case when collecting completion candidates.
-When it's `keep-prefix', the text before point will remain unchanged after
-candidate is inserted, even some of its characters have different case."
- :type '(choice
- (const :tag "Don't ignore case" nil)
- (const :tag "Ignore case" t)
- (const :tag "Keep case before point" keep-prefix)))
-
-(defcustom company-dabbrev-downcase 'case-replace
- "Whether to downcase the returned candidates.
-
-The value of nil means keep them as-is.
-`case-replace' means use the value of `case-replace'.
-Any other value means downcase.
-
-If you set this value to nil, you may also want to set
-`company-dabbrev-ignore-case' to any value other than `keep-prefix'."
- :type '(choice
- (const :tag "Keep as-is" nil)
- (const :tag "Downcase" t)
- (const :tag "Use case-replace" case-replace)))
-
-(defcustom company-dabbrev-minimum-length 4
- "The minimum length for the completion candidate to be included.
-This variable affects both `company-dabbrev' and `company-dabbrev-code'."
- :type 'integer
- :package-version '(company . "0.8.3"))
-
-(defcustom company-dabbrev-ignore-invisible nil
- "Non-nil to skip invisible text."
- :type 'boolean
- :package-version '(company . "0.9.0"))
-
-(defmacro company-dabbrev--time-limit-while (test start limit freq &rest body)
- (declare (indent 3) (debug t))
- `(let ((company-time-limit-while-counter 0))
- (catch 'done
- (while ,test
- ,@body
- (and ,limit
- (= (cl-incf company-time-limit-while-counter) ,freq)
- (setq company-time-limit-while-counter 0)
- (> (float-time (time-since ,start)) ,limit)
- (throw 'done 'company-time-out))))))
-
-(defun company-dabbrev--make-regexp ()
- (concat "\\(?:" company-dabbrev-char-regexp "\\)+"))
-
-(defun company-dabbrev--search-buffer (regexp pos symbols start limit
- ignore-comments)
- (save-excursion
- (cl-labels ((maybe-collect-match
- ()
- (let ((match (match-string-no-properties 0)))
- (when (and (>= (length match) company-dabbrev-minimum-length)
- (not (and company-dabbrev-ignore-invisible
- (invisible-p (match-beginning 0)))))
- (push match symbols)))))
- (goto-char (if pos (1- pos) (point-min)))
- ;; Search before pos.
- (let ((tmp-end (point)))
- (company-dabbrev--time-limit-while (and (not (input-pending-p))
- (> tmp-end (point-min)))
- start limit 1
- (ignore-errors
- (forward-char -10000))
- (forward-line 0)
- (save-excursion
- ;; Before, we used backward search, but it matches non-greedily, and
- ;; that forced us to use the "beginning/end of word" anchors in
- ;; `company-dabbrev--make-regexp'. It's also about 2x slower.
- (while (and (not (input-pending-p))
- (re-search-forward regexp tmp-end t))
- (if (and ignore-comments (save-match-data (company-in-string-or-comment)))
- (re-search-forward "\\s>\\|\\s!\\|\\s\"" tmp-end t)
- (maybe-collect-match))))
- (setq tmp-end (point))))
- (goto-char (or pos (point-min)))
- ;; Search after pos.
- (company-dabbrev--time-limit-while (and (not (input-pending-p))
- (re-search-forward regexp nil t))
- start limit 25
- (if (and ignore-comments (save-match-data (company-in-string-or-comment)))
- (re-search-forward "\\s>\\|\\s!\\|\\s\"" nil t)
- (maybe-collect-match)))
- symbols)))
-
-(defun company-dabbrev--search (regexp &optional limit other-buffer-modes
- ignore-comments)
- (let* ((start (current-time))
- (symbols (company-dabbrev--search-buffer regexp (point) nil start limit
- ignore-comments)))
- (when other-buffer-modes
- (cl-dolist (buffer (delq (current-buffer) (buffer-list)))
- (unless (if (stringp company-dabbrev-ignore-buffers)
- (string-match-p company-dabbrev-ignore-buffers
- (buffer-name buffer))
- (funcall company-dabbrev-ignore-buffers buffer))
- (with-current-buffer buffer
- (when (or (eq other-buffer-modes 'all)
- (apply #'derived-mode-p other-buffer-modes))
- (setq symbols
- (company-dabbrev--search-buffer regexp nil symbols start
- limit ignore-comments)))))
- (and limit
- (> (float-time (time-since start)) limit)
- (cl-return))))
- symbols))
-
-(defun company-dabbrev--prefix ()
- ;; Not in the middle of a word.
- (unless (looking-at company-dabbrev-char-regexp)
- ;; Emacs can't do greedy backward-search.
- (company-grab-line (format "\\(?:^\\| \\)[^ ]*?\\(\\(?:%s\\)*\\)"
- company-dabbrev-char-regexp)
- 1)))
-
-(defun company-dabbrev--filter (prefix candidates)
- (let ((completion-ignore-case company-dabbrev-ignore-case))
- (all-completions prefix candidates)))
-
-;;;###autoload
-(defun company-dabbrev (command &optional arg &rest ignored)
- "dabbrev-like `company-mode' completion backend."
- (interactive (list 'interactive))
- (cl-case command
- (interactive (company-begin-backend 'company-dabbrev))
- (prefix (company-dabbrev--prefix))
- (candidates
- (let* ((case-fold-search company-dabbrev-ignore-case)
- (words (company-dabbrev--search (company-dabbrev--make-regexp)
- company-dabbrev-time-limit
- (pcase company-dabbrev-other-buffers
- (`t (list major-mode))
- (`all `all))))
- (downcase-p (if (eq company-dabbrev-downcase 'case-replace)
- case-replace
- company-dabbrev-downcase)))
- (setq words (company-dabbrev--filter arg words))
- (if downcase-p
- (mapcar 'downcase words)
- words)))
- (kind 'text)
- (ignore-case company-dabbrev-ignore-case)
- (duplicates t)))
-
-(provide 'company-dabbrev)
-;;; company-dabbrev.el ends here