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elisp-format.el
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elisp-format.el
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;;; elisp-format.el --- Format elisp code
;; Copyright (C) 2016 Yuki Inoue
;; based on code by Andy Stewart:
;; Copyright (C) 2009 Andy Stewart
;; https://www.emacswiki.org/emacs/elisp-format.el
;; Filename: elisp-format.el
;; Description: Format elisp code
;; Author: Andy Stewart lazycat.manatee@gmail.com
;; Maintainer: Yuki Inoue inouetakahiroki _at_ gmail.com
;; Created: 2009-01-20 16:31:45
;; Version: 0.5.8
;; URL: https://github.com/Yuki-Inoue/elisp-format
;; Keywords:
;; Compatibility: GNU Emacs 22 ~
;;
;; Features that might be required by this library:
;;
;; `newcomment' `cl'
;;
;;; This file is NOT part of GNU Emacs
;;; License
;;
;; This program 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, or (at your option)
;; any later version.
;; This program 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 this program; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth
;; Floor, Boston, MA 02110-1301, USA.
;;; Commentary:
;;
;; This package is format elisp code.
;; This package is format by itself, so you can view format effect.
;;
;; Below are commands you can use:
;;
;; `elisp-format-region'
;; Format region or defun.
;; `elisp-format-buffer'
;; Format buffer.
;; `elisp-format-file'
;; Format file.
;; `elisp-format-file-batch'
;; Format file with `batch'.
;; `elisp-format-directory'
;; Format recursive elisp files in directory.
;; `elisp-format-directory-batch'
;; Format recursive elisp files in directory with `batch'.
;; `elisp-format-dired-mark-files'
;; Format dired marked files.
;; `elisp-format-library'
;; Format library.
;;
;; Tips:
;;
;; If current mark is active, command `elisp-format-region'
;; will format region you select, otherwise it will format
;; `defun' around point.
;;
;; If you want format many files, you can marked them in dired,
;; and use command `elisp-format-dired-mark-files' to format
;; marked files in dired.
;;
;; You can format special file through
;; command `elisp-format-file'.
;;
;; By default, when you format `huge' file, it will
;; hang emacs.
;; You can also use command `elisp-format-file-batch'
;; make format process at background.
;;
;; You also can use command `elisp-format-directory'
;; format all recursive elisp files in special directory.
;;
;; By default, when you use command `elisp-format-directory'
;; format too many elisp files, will hang emacs.
;; You can also use command `elisp-format-directory-batch'
;; make format process at background.
;;
;; If you're sure lazy, you can use command `elisp-format-library'
;; format special library and don't need input long file path.
;;
;; Note:
;;
;; I can't ensure this package can perfect work with all situations.
;; So please let me know if you have suggestion or bug.
;;
;;; Installation:
;;
;; Put elisp-format.el to your load-path.
;; The load-path is usually ~/elisp/.
;; It's set in your ~/.emacs like this:
;; (add-to-list 'load-path (expand-file-name "~/elisp"))
;;
;; And the following to your ~/.emacs startup file.
;;
;; (require 'elisp-format)
;;
;; No need more.
;;; Customize:
;;
;; `elisp-format-batch-program'
;; The program name for execute batch command.
;;
;; `elisp-format-column'
;; The column number to truncate long line.
;;
;; `elisp-format-indent-comment'
;; Whether indent comment.
;;
;; `elisp-format-dired-mark-files-confirm'
;; Whether confirmation is needed to format dired marked files.
;;
;; `elisp-format-newline-keyword-addons-list'
;; The list contain addons keywords for newline.
;;
;; `elisp-format-newline-keyword-except-list'
;; The list contain except keywords for newline.
;;
;; `elisp-format-split-subexp-keyword-addons-list'
;; The list contain addons keywords that will split it's sub-expression.
;;
;; `elisp-format-split-subexp-keyword-except-list'
;; The list contain except keywords that will split it's sub-expression.
;;
;; `elisp-format-split-subexp-keyword-keep-alist'
;; The alist contain keep keyword when split it's sub-expression.
;;
;; All of the above can customize by:
;; M-x customize-group RET elisp-format RET
;;
;;; Change log:
;;
;; 2016/05/06 and later
;; * Refer https://github.com/Yuki-Inoue/elisp-format
;;
;; 2009/03/10
;; * Fix the bug of
;; `elisp-format-directory-batch' and
;; `elisp-format-file-batch'.
;; * Improve `font-lock-add-keywords' format process.
;; * Setup 100 as default value of `elisp-format-column'.
;;
;; 2009/02/14
;; * New command `elisp-format-file-batch'
;; format elisp file with `batch'.
;; * Improve `defalias' format process.
;; * Improve `with-output-to-temp-buffer' format process.
;; * Improve `lambda' format process.
;; * Improve `featurep' format process.
;; * Improve `loop' format process.
;; * Improve `:keyword' format process.
;; * Improve ,@ format process.
;; * Improve same level expression format process.
;; * Improve string format process.
;; * Remove option `elisp-format-split-last-sexp-string'.
;; not necessary.
;; * Improve performance.
;; * Fix many bugs.
;; * Refactory code.
;;
;; 2009/02/11
;; * Fix documentation about `batch' mode.
;; * New command `elisp-format-directory-batch',
;; format elisp files with `batch'.
;;
;; 2009/02/10
;; * Improve function `elisp-format-directory'.
;;
;; 2009/02/05
;; * Don't format 'hide' elisp file in `elisp-format-directory'.
;;
;; 2009/02/03
;; * Rename `elisp-format-dired' to `elisp-format-dired-mark-files'.
;; * Add new command `elisp-format-directory'.
;; * Display spend time for format each elisp file.
;;
;; 2009/01/31
;; * Check parentheses before format.
;; Remove option `elisp-format-check-parens'.
;; * Add new option `elisp-format-indent-comment'.
;; * Fix bug.
;;
;; 2009/01/27
;; * Join standalone ")".
;; * Format comments.
;; * Fix `undo-outer-limit' bug.
;; * Add new option `elisp-format-split-subexp-keyword-keep-alist'.
;; Remove option `elisp-format-split-subexp-keyword-keep-1-list'.
;; * Split same level expression.
;; * Don't newline build-in keyword when previous expression
;; is lisp data type keyword (beginning with ':').
;; * Newline value field of define keyword if value field is longer
;; than `elisp-format-column', otherwise, don't split.
;; * Fix comment bug in `elisp-format-split-keyword-internal'.
;;
;; 2009/01/25
;; * Support nesting format.
;; * Support split all sub-expression and except first one.
;; * Fix bug.
;; * Fix doc.
;;
;; 2009/01/20
;; * First released.
;;
;;; Acknowledgements:
;;
;;
;;
;;; Bug
;;
;;
;;; TODO
;;
;; Format long lines:
;; When occur huge files (above 7000 lines) and *deep* code level,
;; will got ugly *code column* at right side.
;;
;;; Require
(require 'newcomment)
(eval-when-compile
(require 'cl))
;;; Code:
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Variable ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defvar elisp-format-buildin-keywords-regexp
(let (keywords-alist keywords-list keywords-regexp)
;; Get value of `font-lock-keywords'
;; with `emacs-lisp-mode'.
(with-temp-buffer
;; Load `emacs-lisp-mode' and font-lock.
(emacs-lisp-mode)
(setq font-lock-mode t)
(font-lock-fontify-buffer)
(setq keywords-alist (cadr font-lock-keywords)))
;; Get regexp string and add to `keywords-list'.
(dolist (element keywords-alist)
(setq element
(if (car-safe element)
(car element)
element))
(when (stringp element)
;; Remove "(" from front of regexp.
(setq element (replace-regexp-in-string "^(" "" element))
(push element keywords-list)))
;; Concat all regexp string in `keywords-list'.
(dolist (element keywords-list)
(setq keywords-regexp (concat keywords-regexp
(cond ((eq element (first keywords-list))
(format "\\(%s\\|" element))
((eq element (car (last
keywords-list)))
(format "%s\\)" element))
(t (format "%s\\|" element))))))
;; Return keywords regexp.
keywords-regexp)
"The regular expression that match `build-in' keywords.")
(defvar elisp-format-define-keyword-regexp nil
"The regexp expression for `elisp-format-define-keyword-list'.")
(defvar elisp-format-newline-keyword-addons-regexp nil
"The regular expression for `elisp-format-newline-keyword-addons-list'.")
(defvar elisp-format-split-subexp-keyword-addons-regexp nil
"The regular expression for `elisp-format-split-subexp-keyword-addons-list'.")
(defvar elisp-format-debug-mode nil
"Display details debug information when this option is `non-nil'.")
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Customize ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defgroup elisp-format nil
"Format elisp code."
:group 'tools)
(defcustom elisp-format-batch-program "emacs"
"The program name for execute batch command."
:type 'string
:group 'elisp-format)
(defcustom elisp-format-column 100
"The column number to truncate long line."
:type 'integer
:group 'elisp-format)
(defcustom elisp-format-indent-comment t
"Whether indent comment.
If `non-nil', will indent comment.
Default it t."
:type 'boolean
:group 'elisp-format)
(defcustom elisp-format-dired-mark-files-confirm t
"Whether confirmation is needed to format dired mark files.
If `non-nil' will notify you before format dired mark files.
Default is t."
:type 'boolean
:group 'elisp-format)
(defcustom elisp-format-define-keyword-list
'(
;; Generic.
"defun" "defun*" "defsubst" "defmacro" "defadvice" "define-skeleton"
"define-minor-mode" "define-global-minor-mode"
"define-globalized-minor-mode" "define-derived-mode" "define-generic-mode"
"define-compiler-macro" "define-modify-macro" "defsetf"
"define-setf-expander" "define-method-combination" "defgeneric" "defmethod"
"defalias"
;; Variable.
"defvar" "defconst" "defconstant" "defcustom" "defparameter"
"define-symbol-macro"
;; Types.
"defgroup" "deftheme" "deftype" "defstruct" "defclass" "define-condition"
"define-widget" "defface" "defpackage")
"This list contain define-keywords for format.
Copy those value from `lisp-imenu-generic-expression' define.
Or have a exist variable contain those define-keywords?"
:type 'list
:set (lambda (symbol value)
(set symbol value)
(setq elisp-format-define-keyword-regexp (regexp-opt value)))
:group 'elisp-format)
(defcustom elisp-format-newline-keyword-addons-list
'("interactive" "setq" "set" "buffer-substring"
"buffer-substring-no-properties")
"This list contain addons keywords for newline.
The line beginning match keywords in this list will be newline."
:type 'list
:set (lambda (symbol value)
(set symbol value)
(setq elisp-format-newline-keyword-addons-regexp (regexp-opt value)))
:group 'elisp-format)
(defcustom elisp-format-newline-keyword-except-list '()
"The list contain except keywords for newline.
The line beginning match keywords in this list won't be newline."
:type 'list
:group 'elisp-format)
(defcustom elisp-format-split-subexp-keyword-addons-list
'("and" "or" "buffer-substring" "buffer-substring-no-properties"
"font-lock-add-keywords")
"The list contain addons keywords that will split it's sub-expression."
:type 'list
:set (lambda (symbol value)
(set symbol value)
(setq elisp-format-split-subexp-keyword-addons-regexp (regexp-opt
value)))
:group 'elisp-format)
(defcustom elisp-format-split-subexp-keyword-except-list
'("provide" "require" "loop" "throw" "featurep")
"The list contain except keywords that won't split it's sub-expression."
:type 'list
:group 'elisp-format)
(defcustom elisp-format-split-subexp-keyword-keep-alist
'((1 . ("and" "or" "let" "let*" "while" "when" "catch" "unless" "if" "dolist"
"dotimes" "lambda" "cond" "condition-case" "with-current-buffer"
"with-temp-message" "with-selected-window"
"with-output-to-temp-buffer" "with-selected-frame"))
(2 . (
;; Generic.
"defun" "defun*" "defsubst" "defmacro" "defadvice" "define-skeleton"
"define-minor-mode" "define-global-minor-mode"
"define-globalized-minor-mode" "define-derived-mode"
"define-generic-mode" "define-compiler-macro" "define-modify-macro"
"defsetf" "define-setf-expander" "define-method-combination"
"defgeneric" "defmethod" "defalias"
;; Variable.
"defvar" "defconst" "defconstant" "defcustom" "defparameter"
"define-symbol-macro"
;; Types.
"defgroup" "deftheme" "deftype" "defstruct" "defclass"
"define-condition" "define-widget" "defface" "defpackage" ))
(5 . ("loop")))
"The list contain keywords that will be split it's sub-expression."
:type 'alist
:group 'elisp-format)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Interactive Functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;###autoload
(defun elisp-format-region (&optional start end)
"Format current region or buffer.
This function will format region from START to END.
Or try to format `defun' around point."
(interactive)
(let ((start-time (elisp-format-get-current-time)))
;; Display startup message.
(message "Format %s ..." (buffer-name))
;; Check parentheses before format.
(check-parens)
;; Format start.
(save-excursion
;; Get format area.
(unless (and start
end)
;; Get format area.
(if mark-active
;; Get activate mark region.
(progn
(setq start (region-beginning))
(setq end (region-end))
(deactivate-mark))
;; Or get current function.
(setq start
(progn
(beginning-of-defun)
(point)))
(setq end
(progn
(end-of-defun)
(point)))))
(setq end (copy-marker end))
;; Delete un-necessary whitespace.
(elisp-format-delete-whitespace start end)
(when elisp-format-debug-mode
(message "`elisp-format-delete-whitespace' module completed."))
;; Split same level expression.
(elisp-format-split-same-level-expression start end)
(when elisp-format-debug-mode
(message "`elisp-format-split-same-level-expression' module completed."))
;; Split list data type.
(elisp-format-split-list-data-type start end)
(when elisp-format-debug-mode
(message "`elisp-format-split-list-data-type' module completed."))
;; Split keyword.
(elisp-format-split-keyword start end)
(when elisp-format-debug-mode
(message "`elisp-format-split-keyword' module completed."))
;; Split keyword value.
(elisp-format-split-define-assoc-value start end)
(when elisp-format-debug-mode
(message "`elisp-format-split-define-assoc-value' module completed."))
;; Split sub-expression.
(elisp-format-split-subexp start end)
(when elisp-format-debug-mode
(message "`elisp-format-split-subexp' module completed."))
;; Split and indent lines.
(goto-char start)
(while (< (point) end)
;; Format non-blank line.
(unless (and (bolp)
(eolp))
;; Split and indent lines.
(elisp-format-split-and-indent))
;; Forward line.
(forward-line +1))
(when elisp-format-debug-mode
(message "`elisp-format-split-and-indent' module completed."))
;; Join standalone ")".
(elisp-format-join-close-parentheses)
(when elisp-format-debug-mode
(message "`elisp-format-join-close-parentheses' module completed."))
;; Indent comment.
(if elisp-format-indent-comment
(elisp-format-indent-comment-region start end))
(when elisp-format-debug-mode
(message "`elisp-format-indent-comment-region' module completed."))
;; Display completed message and spend time.
(message "Format %s completed (%ss)." (buffer-name)
(/ (- (elisp-format-get-current-time) start-time) 1000000)))))
;;;###autoload
(defun elisp-format-buffer ()
"Format current buffer."
(interactive)
(elisp-format-region (point-min)
(point-max)))
;;;###autoload
(defun elisp-format-file (filename)
"Format file with FILENAME."
(interactive "fFile name: ")
(with-current-buffer (find-file-noselect filename)
(elisp-format-buffer)))
;;;###autoload
(defun elisp-format-file-batch (filename &optional surpress-popup-window)
"Format elisp FILENAME.
But instead in `batch-mode'.
If SURPRESS-POPUP-WINDOW is non-nil, don't show output window."
(interactive "fFile name: ")
;; Format elisp file.
(elisp-format-batch-command "elisp-format-file-batch"
elisp-format-batch-program
(format
"-batch -l %s --eval=\"(progn (require 'elisp-format) (elisp-format-file \\\"%s\\\"))\""
;; Use `find-library-name' to find load path.
(find-library-name "elisp-format") filename)
surpress-popup-window))
;;;###autoload
(defun elisp-format-directory (dir)
"Format recursive elisp files under DIR."
(interactive "DDirectory: ")
(let ((suffix (format "^.*\\.el%s$" (regexp-opt load-file-rep-suffixes))))
(dolist (file (directory-files dir t))
(if (file-directory-p file)
;; Don't match . or .. directory.
(unless (string-match "^\\.\\.?$" (file-name-nondirectory file))
;; Find files in sub-directory.
(elisp-format-directory file))
;; Not backup file.
(unless (string-match "^\\.?#" (file-name-nondirectory file))
;; Match elisp file or it's compress format.
(if (string-match suffix (file-name-nondirectory file))
(elisp-format-file file)))))))
;;;###autoload
(defun elisp-format-directory-batch (dir &optional surpress-popup-window)
"Format recursive elisp files under DIR.
But instead in `batch-mode'.
If SURPRESS-POPUP-WINDOW is non-nil, don't show output window."
(interactive "DDirectory: ")
;; Format elisp file under specify directory.
(elisp-format-batch-command "elisp-format-directory-batch"
elisp-format-batch-program
(format
"-batch -l %s --eval=\"(progn (require 'elisp-format) (elisp-format-directory \\\"%s\\\"))\""
;; Use `find-library-name' to find load path.
(find-library-name "elisp-format") dir)
surpress-popup-window))
;;;###autoload
(defun elisp-format-dired-mark-files ()
"Format dired mark files."
(interactive)
(if (or (not elisp-format-dired-mark-files-confirm)
(yes-or-no-p "Do you want format marked files? "))
(dolist (filename (dired-get-marked-files))
(elisp-format-file filename))))
;;;###autoload
(defun elisp-format-library (library)
"Format LIBRARY."
(interactive (list
(let* ((dirs load-path)
(suffixes (find-library-suffixes)))
(completing-read "Library name: " (apply-partially
'locate-file-completion-table
dirs suffixes)))))
(elisp-format-file (find-library-name library)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Utilities Functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun elisp-format-split-keyword-internal (subexp)
"Split keyword.
SUBEXP is sub-expression number for regexp match."
(let (match-beg-position match-length match-keyword)
;; Record match beginning position and length.
;; make below setup before `elisp-format-in-string-p'
;; or `elisp-format-in-comment-p' to get correct
;; match value.
(setq match-beg-position (match-beginning subexp))
(setq match-length (length (match-string subexp)))
;; Make sure jump to match beginning position first,
;; to avoid search in `string' area.
(goto-char match-beg-position)
;; Newline handle.
(cond
;; Move to next line when in comment area.
((or
(elisp-format-in-comment-p)
;; or beginning of comment line.
(elisp-format-beginning-of-comment-line-p))
(forward-line +1))
;; Move to end position of string.
((elisp-format-in-string-p)
(goto-char (elisp-format-string-end-position)))
;; Newline match keyword sexp.
(t
;; Get match-keyword.
(setq match-keyword (elisp-format-get-match-keyword))
;; Newline when `match-keyword' is not match
;; list `elisp-format-newline-except-keywords-list'.
(unless (member match-keyword elisp-format-newline-keyword-except-list)
;; Newline beginning position when current
;; point not first non-blank character of line,
;; and previous subexp not lisp data type keyword.
(unless (or (elisp-format-first-non-blank-of-line-p)
(elisp-format-prev-sexp-list-data-type-p))
(newline))
;; Newline end position when current
;; sexp not last sexp of line.
(forward-list) ;Move to after of ")"
(unless (or (elisp-format-last-sexp-of-line-p))
(newline)) ;Newline when not last sexp of line.
)
;; Jump to end position of match keyword,
;; for continue search next keyword.
(goto-char match-beg-position)
(forward-char match-length)))))
(defun elisp-format-split-subexp-internal (subexp)
"Split sub-expression that match keyword.
SUBEXP is sub-expression number for regexp match."
(let (match-beg-position match-length match-keyword subsexp-start subsexp-end
subsexp-keep (subsexp-counter 0))
;; Record match beginning position and length.
;; make below setup before `elisp-format-in-string-p'
;; or `elisp-format-in-comment-p' to get correct
;; match value.
(setq match-beg-position (match-beginning subexp))
(setq match-length (length (match-string subexp)))
;; Make sure jump to match beginning position first,
;; to avoid search in `string' area.
(goto-char match-beg-position)
;; Newline handle.
(cond
;; Move to next line when in comment area.
((or
(elisp-format-in-comment-p)
;; or beginning of comment line.
(elisp-format-beginning-of-comment-line-p))
(forward-line +1))
;; Move to end position of string.
((elisp-format-in-string-p)
(goto-char (elisp-format-string-end-position)))
;; Newline match keyword sexp.
(t
;; Get beginning and subsexp-end position of subsexp.
(setq subsexp-start match-beg-position)
(forward-list)
(setq subsexp-end (copy-marker (point)))
;; Get match-keyword.
(goto-char subsexp-start)
(setq match-keyword (elisp-format-get-match-keyword))
;; Don't match except keyword.
(unless (member match-keyword
elisp-format-split-subexp-keyword-except-list)
;; Go beginning position of subsexp.
(goto-char subsexp-start)
(search-forward-regexp " \\|$" nil t)
;; Format sub-expression.
(catch 'reach-last-sexp
(while (< (point) subsexp-end) ;not out `subsexp-end'
;; Skip whitespace before keyword.
(skip-chars-forward " \t\n")
;; Skip any comment between two sub-expression.
(while (string-equal (string (char-after)) ";")
(move-end-of-line 1)
(skip-chars-forward " \t\n"))
;; Increment subsexp counter.
(incf subsexp-counter)
;; Get keep status.
(setq subsexp-keep (elisp-format-is-keep-subexp match-keyword
subsexp-counter))
;; Don't newline if match keep keyword.
(unless (or subsexp-keep
(elisp-format-first-non-blank-of-line-p)
(elisp-format-prev-sexp-list-data-type-p))
(newline))
;; Forward sexp.
(unless
;; Try to forward sexp and newline.
;; or jump out `while' loop.
(ignore-errors
(forward-sexp)
;; Don't newline if match keep keyword.
(unless (or subsexp-keep
(elisp-format-last-sexp-of-line-p)
(elisp-format-prev-sexp-list-data-type-p))
(newline))
;; Make sure `t' at last.
t)
(throw 'reach-last-sexp "Can't find next sexp")))))
;; Move to end of next keyword for continue search.
(goto-char subsexp-start)
(search-forward-regexp " \\|$" nil t)))))
(defun elisp-format-split-and-indent ()
"Split and indent lines."
;; Indent current line first.
(funcall indent-line-function)
;; Split others.
(let ((original-line (elisp-format-line-number)))
(when elisp-format-debug-mode
(message "%s" original-line))
;; Move to real end position of current line,
;; ignore trailing whitespace.
(call-interactively 'move-end-of-line)
(skip-chars-backward " \t")
;; Split current line when length
;; longer than `elisp-format-column'.
(when (> (current-column) elisp-format-column)
;; Move to `elisp-format-column'.
(move-to-column elisp-format-column t)
(cond
;; In comment area.
((elisp-format-in-comment-p)
;; Return original line before parse
;; if current position is in comment.
(goto-line original-line))
;; In string area.
((elisp-format-in-string-p)
;; Split current string.
(elisp-format-split-string)
(when elisp-format-debug-mode
(message "Format string at %s completed." original-line)))
;; In code area.
(t
;; Split current code.
(elisp-format-split-code original-line)
(when elisp-format-debug-mode
(message "Format code at %s completed." original-line)))))))
(defun elisp-format-split-string ()
"Split current string with appropriate column.
Default this function will split current line to make
end column less than value of `elisp-format-column'.
And this action just advice, it don't split deep
if current line can't split any more."
(let (string-length indent-length)
;; Jump to start position of string.
(goto-char (elisp-format-string-beg-position))
;; Newline and indent if
;; string is not first sexp,
;; or not first subsexp of current sexp.
(unless (or (elisp-format-first-non-blank-of-line-p)
(elisp-format-first-subsexp-of-sexp-p))
(newline-and-indent))
;; Record indent length.
(setq indent-length (- (point)
(line-beginning-position)))
;; Record string length.
(forward-char +1)
(setq string-length (elisp-format-string-length))
;; Jump to end position of string.
(goto-char (elisp-format-string-end-position))
;; Parse deep if string is not last non-blank character of line.
(unless (elisp-format-last-non-blank-of-line-p)
;; Parse deep if string end position is still
;; longer than `elisp-format-column'
(if (> (+ indent-length string-length) elisp-format-column)
;; Newline string when string is not last sexp of line.
(unless (elisp-format-last-sexp-of-line-p)
(newline-and-indent)
(forward-line -1))
;; Otherwise return previous line.
(forward-line -1)))))
(defun elisp-format-split-code (original-line)
"Split current code with appropriate column.
Default this function will split current line to make
end column less than value of `elisp-format-column'.
And this action just advice, it don't split deep
if current line can't split any more.
Argument ORIGINAL-LINE is position before parse."
;; Ignore trailing whitespace after `elisp-format-column'.
(skip-chars-forward " \t")
;; Jump to start position of previous sexp.
(search-backward-regexp " \\|^" nil t)
(skip-chars-forward " \t")
;; Newline and indent if sexp
;; is not define-keyword association name,
;; and is not first non-blank character of line.
(unless (or (elisp-format-define-keyword-assoc-name-p)
(elisp-format-first-non-blank-of-line-p))
(newline-and-indent))
;; Jump to end position of current sexp.
(search-forward-regexp " \\|$" nil t)
(skip-chars-backward " \t")
;; Parse deep if current sexp is not last
;; non-blank character of line.
(unless (elisp-format-last-non-blank-of-line-p)
(if (> (current-column) elisp-format-column)
;; Newline and indent if sexp end position
;; still after `elisp-format-column'.
(progn
(newline-and-indent)
(forward-line -1))
;; Otherwise return original line before parse.
(goto-line original-line))))
(defun elisp-format-line-number (&optional pos)
"Return (narrowed) buffer line number at position POS.
If POS is nil, use current buffer location."
(let ((original-position (or pos
(point))) start)
(save-excursion
(goto-char (point-min))
(setq start (point))
(goto-char original-position)
(forward-line 0)
(1+ (count-lines start (point))))))
(defun elisp-format-delete-whitespace (&optional start end)
"Delete un-necessary whitespace between START and END."
;; Get area.
(or start
(setq start (point-min)))
(or end
(setq end (point-max)))
;; Delete trailing whitespace.
(delete-trailing-whitespace)
;; Delete whitespace between code lines.
(let (search-start search-end)
(goto-char start)
(while (re-search-forward "\n\\s-+" end t)
;; Record `search-start' and `search-end'
;; before `elisp-format-in-string-p' for correct search.
(setq search-start (match-beginning 0))
(setq search-end (match-end 0))
;; Not in string.
(unless (elisp-format-in-string-p)
;; Not comment at front or after
;; search data.
(if (and
(progn
(goto-char search-start)
(not (elisp-format-in-comment-p)))
(progn
(goto-char search-end)
(forward-char +1)
(not (elisp-format-in-comment-p))))
;; Join line.
(progn
(goto-char search-end)
(join-line))
;; Move to `search-end'.
(goto-char search-end)))))
;; Delete all whitespace after "(" in code area.
(goto-char start)
(while (re-search-forward "(\\s-+" end t)
(unless (and (elisp-format-in-comment-p)
(elisp-format-in-string-p))
;; Remove whitespace after '('.
(kill-region (1+ (match-beginning 0))
(match-end 0)))))
(defun elisp-format-split-subexp (&optional start end)
"Split sub-expression format START to END."
;; Get area.
(or start
(setq start (point-min)))
(or end
(setq end (point-max)))
;; Split sub-expression.
(goto-char start)
(let ((search-regexp (concat "\\s-*\\([`',]?@?(+" "\\("
elisp-format-buildin-keywords-regexp "\\|"
elisp-format-split-subexp-keyword-addons-regexp
"\\)" "\\)\\b[^\\B\\s_-]")))
(while (re-search-forward search-regexp end t)
(elisp-format-split-subexp-internal 1))))
(defun elisp-format-split-define-assoc-value (&optional start end)
"Split association value of keyword format START to END.
Keyword is match in `elisp-format-define-keyword-list'."
;; Get area.
(or start
(setq start (point-min)))
(or end
(setq end (point-max)))
;; Split association keyword value.
(goto-char start)
(let ((search-regexp (concat "\\s-*\\([`',]?@?(+"
elisp-format-define-keyword-regexp
"\\)\\b[^\\B\\s_-]")) search-start value-start
value-length)
(while (re-search-forward search-regexp end t)
(setq search-start (match-end 1))
;; Search deep when not in comment or string.
(unless (and (elisp-format-in-comment-p)
(elisp-format-in-string-p))
;; Search deep.
(unless
;; Use `ignore-errors' avoid reach last
;; sub-expression throw error.
(ignore-errors
(forward-sexp)
(skip-chars-forward " \t\n")
(setq value-start (point))
(forward-sexp)
(setq value-length (- (point) value-start))
(goto-char value-start)
;; Newline if keyword value
;; not first non-blank character of line.
;; and value length longer than `elisp-format-column'.
(if (and (not (elisp-format-first-non-blank-of-line-p))
(> (+ (current-column) value-length) elisp-format-column))
(newline)))
;; Otherwise goto search start.
(goto-char search-start))))))
(defun elisp-format-split-same-level-expression (&optional start end)
"Split same level expression from START to END."
;; Get area.
(or start
(setq start (point-min)))
(or end
(setq end (point-max)))
;; Split same level expression.
(goto-char start)
(let (search-end)
(while (re-search-forward "\\()\\|\\]\\)\\(\\s-*\\)[`',]?@?\\((\\|\\[\\)"
end t)
;; Record search end before
;; `elisp-format-in-comment-p'
;; or
;; `elisp-format-in-string-p'.
(setq search-end (match-end 2))
;; When not in comment or string.
(unless (or (elisp-format-in-comment-p)
(elisp-format-in-string-p))
;; Newline second expression.
(goto-char search-end)
(newline)))))
(defun elisp-format-split-list-data-type (&optional start end)
"Split list type data (:keyword) from START to END."
;; Get area.
(or start
(setq start (point-min)))
(or end
(setq end (point-max)))
;; Split list data type.
(goto-char start)
(let (search-beg search-end)
(while (re-search-forward "'*\\B:+[^: \n]+\\b" end t)
;; Record search end before
;; `elisp-format-in-comment-p'
;; or
;; `elisp-format-in-string-p'.
(setq search-beg (match-beginning 0))
(setq search-end (match-end 0))
;; When not in comment or string.
(unless (or (elisp-format-in-comment-p)
(elisp-format-in-string-p))
;; Jump to search beginning position.
(goto-char search-beg)
;; Try to newline `:keyword'.
(save-excursion
;; Not first non-blank of line
;; and not first subsexp of current sexp.
(unless (or (elisp-format-first-non-blank-of-line-p)
(elisp-format-first-subsexp-of-sexp-p))
;; Newline `:keyword' if it is
;; second sub-sexp of current sexp.
(ignore-errors
(skip-chars-backward " \t")
(backward-sexp)
(unless (elisp-format-first-subsexp-of-sexp-p)
(goto-char search-beg)
(newline)))
;; Newline `:keyword' if next sexp
;; is also `:keyword'.
(goto-char search-beg)
(forward-sexp)
(skip-chars-forward " \t\n")
(when (looking-at "'*:")
(goto-char search-beg)
(newline))))
;; Newline list data type `value'.
(forward-sexp) ;skip `:keyword'
(skip-chars-forward " \t") ;skip blank
;; Not `:keyword' at behind
;; and not last sexp.
(unless (looking-at "'*\\(:\\|)\\)")
(ignore-errors
;; Forward sexp.
(forward-sexp)
;; Not last sexp.
(unless (elisp-format-last-sexp-of-line-p)
;; Newline `:keyword' if next
;; subsexp is not last one in current sexp.
(forward-sexp)
(unless (elisp-format-last-sexp-of-line-p)
(backward-sexp)
(newline)))))
;; Jump to match end for continue search.
(goto-char search-end)))))
(defun elisp-format-split-keyword (&optional start end)
"Split keyword from START to END."
;; Get area.
(or start