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lispy.el
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lispy.el
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;;; lispy.el --- vi-like Paredit. -*- lexical-binding: t -*-
;; Copyright (C) 2014-2015 Oleh Krehel
;; Author: Oleh Krehel <[email protected]>
;; URL: https://github.com/abo-abo/lispy
;; Version: 0.26.0
;; Keywords: lisp
;; This file is not part of GNU Emacs
;; This file 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.
;; For a full copy of the GNU General Public License
;; see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; Due to the structure of Lisp syntax it's very rare for the
;; programmer to want to insert characters right before "(" or right
;; after ")". Thus unprefixed printable characters can be used to call
;; commands when the point is at one of these locations, which are
;; further referred to as special.
;;
;; Conveniently, when located at special position it's very clear to
;; which sexp the list-manipulating command will be applied to, what
;; the result be and where the point should end up afterwards. You
;; can enhance this effect with `show-paren-mode' or similar.
;;
;; Here's an illustration to this effect, with `lispy-clone' ("*"
;; represents the point):
;; |--------------------+-----+--------------------|
;; | before | key | after |
;; |--------------------+-----+--------------------|
;; | (looking-at "(")* | c | (looking-at "(") |
;; | | | (looking-at "(")* |
;; |--------------------+-----+--------------------|
;; | *(looking-at "(") | c | *(looking-at "(") |
;; | | | (looking-at "(") |
;; |--------------------+-----+--------------------|
;;
;; When special, the digit keys call `digit-argument', since most
;; `lispy' commands accept a numeric argument. For instance, "3c" is
;; equivalent to "ccc" (clone sexp 3 times), and "4j" is equivalent to
;; "jjjj" (move point 4 sexps down). Some useful applications are
;; "9l" and "9h" - they exit list forwards and backwards respectively
;; at most 9 times which makes them effectively equivalent to
;; `end-of-defun' and `beginning-of-defun'.
;;
;; To move the point into a special position, use:
;; "]" - calls `lispy-forward'
;; "[" - calls `lispy-backward'
;; "C-3" - calls `lispy-right' (exit current list forwards)
;; ")" - calls `lispy-right-nostring' (exit current list
;; forwards, but self-insert in strings and comments)
;;
;; These are the few Lispy commands that don't care whether the point
;; is special or not. Other such bindings are `DEL', `C-d', `C-k'.
;;
;; To get out of the special position, you can use any of the good-old
;; navigational commands such as `C-f' or `C-n'.
;; Additionally `SPC' will break out of special to get around the
;; situation when you have the point between open parens like this
;; "(|(" and want to start inserting. `SPC' will change the code to
;; this: "(| (".
;;
;; A lot of Lispy commands come in pairs: one reverses the other.
;; Some examples are:
;; |-----+--------------------------+------------+-------------------|
;; | key | command | key | command |
;; |-----+--------------------------+------------+-------------------|
;; | j | `lispy-down' | k | `lispy-up' |
;; | s | `lispy-move-down' | w | `lispy-move-up' |
;; | > | `lispy-slurp' | < | `lispy-barf' |
;; | c | `lispy-clone' | C-d or DEL | |
;; | C | `lispy-convolute' | C | reverses itself |
;; | d | `lispy-different' | d | reverses itself |
;; | M-j | `lispy-split' | + | `lispy-join' |
;; | O | `lispy-oneline' | M | `lispy-multiline' |
;; | S | `lispy-stringify' | C-u " | `lispy-quotes' |
;; | ; | `lispy-comment' | C-u ; | `lispy-comment' |
;; | xi | `lispy-to-ifs' | xc | `lispy-to-cond' |
;; | F | `lispy-follow' | D | `pop-tag-mark' |
;; |-----+--------------------------+------------+-------------------|
;;
;; Here's a list of commands for inserting pairs:
;; |-----+------------------------------------|
;; | key | command |
;; |-----+------------------------------------|
;; | ( | `lispy-parens' |
;; | { | `lispy-braces' |
;; | } | `lispy-brackets' |
;; | " | `lispy-quotes' |
;; |-----+------------------------------------|
;;
;; Here's a list of modified insertion commands that handle whitespace
;; in addition to self-inserting:
;; |-----+------------------------------------|
;; | key | command |
;; |-----+------------------------------------|
;; | SPC | `lispy-space' |
;; | : | `lispy-colon' |
;; | ^ | `lispy-hat' |
;; | ' | `lispy-tick' |
;; | ` | `lispy-backtick' |
;; | C-m | `lispy-newline-and-indent' |
;; |-----+------------------------------------|
;;
;; You can see the full list of bound commands with "F1 f lispy-mode".
;;
;; Most special commands will leave the point special after they're
;; done. This allows to chain them as well as apply them continuously
;; by holding the key. Some useful holdable keys are "jkf<>cws;".
;; Not so useful, but fun is "/": start it from "|(" position and hold
;; until all your Lisp code is turned into Python :).
;;
;; Some Clojure support depends on `cider'.
;; Some Scheme support depends on `geiser'.
;; Some Common Lisp support depends on `slime' or `sly'.
;; You can get them from MELPA.
;;
;; See http://abo-abo.github.io/lispy/ for a detailed documentation.
;;
;;; Code:
;;* Requires
(eval-when-compile
(require 'cl)
(require 'org)
(require 'iedit)
(require 'eldoc)
(require 'ediff)
(require 'ediff-util)
(require 'semantic)
(require 'semantic/db))
(require 'mode-local)
(require 'lispy-tags)
(require 'help-fns)
(require 'edebug)
(require 'etags)
(require 'outline)
(require 'avy)
(require 'newcomment)
(require 'lispy-inline)
(setq iedit-toggle-key-default nil)
(require 'delsel)
(require 'swiper)
(require 'pcase)
(require 'hydra)
(defsubst lispy-looking-back (regexp)
"Forward to (`looking-back' REGEXP)."
(looking-back regexp (line-beginning-position)))
;;* Locals: extract block
(defvar lispy-map-input-overlay nil
"The input overlay for mapping transformations.")
(defvar lispy-map-target-beg 1
"The target start for mapping transformations.")
(defvar lispy-map-target-len 1
"The target end for mapping transformations.")
(defvar-local lispy-outline-header ";;"
"Store the buffer-local outline start.")
(defvar lispy-map-format-function nil)
;;* Customization
(defgroup lispy nil
"List navigation and editing for the Lisp family."
:group 'bindings
:prefix "lispy-")
(defvar lispy-left "[([{]"
"Opening delimiter.")
(defvar lispy-right "[])}]"
"Closing delimiter.")
(defvar lispy-outline "^;;\\(?:;[^#]\\|\\*+\\)"
"Outline delimiter.")
(defcustom lispy-no-space nil
"When non-nil, don't insert a space before parens/brackets/braces/colons."
:type 'boolean
:group 'lispy)
(make-variable-buffer-local 'lispy-no-space)
(defcustom lispy-lax-eval t
"When non-nil, fix \"unbound variable\" error by setting the it to nil.
This is useful when hacking functions with &optional arguments.
So evaling (setq mode (or mode major-mode)) will set mode to nil on
the first eval, and to major-mode on the second eval."
:type 'boolean
:group 'lispy)
(defcustom lispy-verbose t
"If t, lispy will display some messages on error state.
These messages are similar to \"Beginning of buffer\" error for
`backward-char' and can safely be ignored."
:type 'boolean
:group 'lispy)
(defcustom lispy-verbose-verbs t
"If t, verbs produced by `lispy-defverb' will have a hint in the echo area.
The hint will consist of the possible nouns that apply to the verb."
:type 'boolean
:group 'lispy)
(defcustom lispy-close-quotes-at-end-p nil
"If t, when pressing the `\"' at the end of a quoted string, it will move you past the end quote."
:type 'boolean
:group 'lispy)
(defcustom lispy-helm-columns '(70 80)
"Max lengths of tag and tag+filename when completing with `helm'."
:group 'lispy
:type '(list integer integer))
(defcustom lispy-no-permanent-semantic nil
"When t, `lispy' will not enable function `semantic-mode' when it's off."
:type 'boolean
:group 'lispy)
(defcustom lispy-completion-method 'ivy
"Method to select a candidate from a list of strings."
:type '(choice
(const :tag "Ivy" ivy)
;; sensible choice for many tags
(const :tag "Helm" helm)
;; `ido-vertical-mode' is highly recommended here
(const :tag "Ido" ido)
;; `icomplete-mode' and `icy-mode' will affect this
(const :tag "Default" default)))
(defcustom lispy-visit-method 'ffip
"Method to switch to a file in the current project."
:type '(choice
(const :tag "Find File in Project" ffip)
(const :tag "Projectile" projectile)))
(defcustom lispy-avy-style-char 'pre
"Method of displaying the overlays for a char during visual selection."
:type '(choice
(const :tag "Pre" pre)
(const :tag "At" at)
(const :tag "At full" at-full)
(const :tag "Post" post)))
(defcustom lispy-avy-style-paren 'at
"Method of displaying the overlays for a paren during visual selection."
:type '(choice
(const :tag "Pre" pre)
(const :tag "At" at)
(const :tag "At full" at-full)
(const :tag "Post" post)))
(defcustom lispy-avy-style-symbol 'pre
"Method of displaying the overlays for a symbol during visual selection."
:type '(choice
(const :tag "Pre" pre)
(const :tag "At" at)
(const :tag "At full" at-full)
(const :tag "Post" post)))
(defcustom lispy-avy-keys (number-sequence ?a ?z)
"Keys for jumping."
:type '(repeat :tag "Keys" (character :tag "char")))
(defface lispy-command-name-face
'((((class color) (background light))
:background "#d8d8f7" :inherit font-lock-function-name-face)
(((class color) (background dark))
:background "#333333" :inherit font-lock-function-name-face))
"Face for Elisp commands."
:group 'lispy-faces)
(defface lispy-cursor-face
'((((class color) (background light))
:background "#000000" :foreground "#ffffff")
(((class color) (background dark))
:background "#ffffff" :foreground "#000000"))
"Face for `lispy-view-test'."
:group 'lispy-faces)
(defface lispy-test-face
'((t (:inherit lispy-face-hint)))
"Face for `lispy-view-test'."
:group 'lispy-faces)
(defvar lispy-mode-map (make-sparse-keymap))
(defvar lispy-known-verbs nil
"List of registered verbs.")
(defvar lispy-ignore-whitespace nil
"When set to t, function `lispy-right' will not clean up whitespace.")
(defcustom lispy-compat '(edebug)
"List of package compatibility options.
Enabling them adds overhead, so make sure that you are actually
using those packages."
:type '(repeat
(choice
(const :tag "god-mode" god-mode)
(const :tag "magit-blame-mode" magit-blame-mode)
(const :tag "edebug" edebug)
(const :tag "cider" cider)
(const :tag "macrostep" macrostep))))
(defvar-local lispy-old-outline-settings nil
"Store the old values of `outline-regexp' and `outline-level'.
`lispy-mode' overrides those while it's on.")
(defcustom lispy-safe-delete nil
"When non-nil, killing/deleting an active region keeps delimiters balanced.
This applies to `lispy-delete', `lispy-kill-at-point', `lispy-paste', and
`lispy-delete-backward'. This also applies to `lispy-yank' when
`delete-selection-mode' is non-nil."
:group 'lispy
:type 'boolean)
(defcustom lispy-safe-copy nil
"When non-nil, `lispy-new-copy' won't copy unbalanced delimiters in a region."
:group 'lispy
:type 'boolean)
(defcustom lispy-safe-paste nil
"When non-nil, `lispy-paste' and `lispy-yank' will add missing delimiters."
:group 'lispy
:type 'boolean)
(defcustom lispy-safe-threshold 1500
"The max size of an active region that lispy will try to keep balanced.
This only applies when `lispy-safe-delete', `lispy-safe-copy', and/or
`lispy-safe-paste' are non-nil."
:group 'lispy
:type 'number)
(defcustom lispy-safe-actions-ignore-strings t
"When non-nil, don't try to act safely in strings.
Any unmatched delimiters inside of strings will be copied or deleted. This only
applies when `lispy-safe-delete', `lispy-safe-copy', and/or `lispy-safe-paste'
are non-nil."
:group 'lispy
:type 'boolean)
(defcustom lispy-safe-actions-ignore-comments t
"When non-nil, don't try to act safely in comments.
Any unmatched delimiters inside of comments will be copied or deleted. This only
applies when `lispy-safe-delete', `lispy-safe-copy', and/or `lispy-safe-paste'
are non-nil."
:group 'lispy
:type 'boolean)
(defcustom lispy-safe-actions-no-pull-delimiters-into-comments nil
"When non-nil, don't pull unmatched delimiters into comments when deleting.
This prevents the accidental unbalancing of expressions from commenting out
delimiters. This only applies when `lispy-safe-delete', `lispy-safe-copy',
and/or `lispy-safe-paste' are non-nil."
:group 'lispy
:type 'boolean)
(defcustom lispy-insert-space-after-wrap t
"When non-nil, insert a space after the point when wrapping.
This applies to the commands that use `lispy-pair'."
:group 'lispy
:type 'boolean)
;;;###autoload
(define-minor-mode lispy-mode
"Minor mode for navigating and editing LISP dialects.
When `lispy-mode' is on, most unprefixed keys,
i.e. [a-zA-Z+-./<>], conditionally call commands instead of
self-inserting. The condition (called special further on) is one
of:
- the point is before \"(\"
- the point is after \")\"
- the region is active
For instance, when special, \"j\" moves down one sexp, otherwise
it inserts itself.
When special, [0-9] call `digit-argument'.
When `lispy-mode' is on, \"[\" and \"]\" move forward and
backward through lists, which is useful to move into special.
\\{lispy-mode-map}"
:keymap lispy-mode-map
:group 'lispy
:lighter " LY"
(if lispy-mode
(progn
(require 'eldoc)
(eldoc-remove-command 'special-lispy-eval)
(eldoc-remove-command 'special-lispy-x)
(eldoc-add-command 'lispy-space)
(setq lispy-old-outline-settings
(cons outline-regexp outline-level))
(setq-local outline-level 'lispy-outline-level)
(cond ((eq major-mode 'latex-mode)
(setq-local lispy-outline "^\\(?:%\\*+\\|\\\\\\(?:sub\\)?section{\\)")
(setq lispy-outline-header "%")
(setq-local outline-regexp "\\(?:%\\*+\\|\\\\\\(?:sub\\)?section{\\)"))
((eq major-mode 'clojure-mode)
(require 'le-clojure)
(setq completion-at-point-functions
'(lispy-clojure-complete-at-point
cider-complete-at-point))
(setq-local outline-regexp (substring lispy-outline 1)))
((eq major-mode 'python-mode)
(setq-local lispy-outline "^#\\*+")
(setq lispy-outline-header "#")
(setq-local outline-regexp "#\\*+")
(setq-local outline-heading-end-regexp "\n"))
(t
(setq-local outline-regexp (substring lispy-outline 1))))
(when (called-interactively-p 'any)
(mapc #'lispy-raise-minor-mode
(cons 'lispy-mode lispy-known-verbs))))
(when lispy-old-outline-settings
(setq outline-regexp (car lispy-old-outline-settings))
(setq outline-level (cdr lispy-old-outline-settings))
(setq lispy-old-outline-settings nil))))
(defun lispy-raise-minor-mode (mode)
"Make MODE the first on `minor-mode-map-alist'."
(let ((x (assq mode minor-mode-map-alist)))
(when x
(setq minor-mode-map-alist
(cons x (delq mode minor-mode-map-alist))))))
;;* Macros
(defmacro lispy-dotimes (n &rest bodyform)
"Execute N times the BODYFORM unless an error is signaled.
Return nil if couldn't execute BODYFORM at least once.
Otherwise return the amount of times executed."
(declare (indent 1)
(debug (form body)))
`(let ((i 0))
(catch 'result
(condition-case e
(progn
(while (<= (cl-incf i) ,n)
,@bodyform)
,n)
(error
(when (eq (car e) 'buffer-read-only)
(message "Buffer is read-only: %s" (current-buffer)))
(cl-decf i)
(and (> i 0) i))))))
(defmacro lispy-save-excursion (&rest body)
"More intuitive (`save-excursion' BODY)."
(declare (indent 0))
`(let ((out (save-excursion
,@body)))
(when (lispy-bolp)
(back-to-indentation))
out))
(defmacro lispy-from-left (&rest body)
"Ensure that BODY is executed from start of list."
(let ((at-start (cl-gensym "at-start")))
`(let ((,at-start (lispy--leftp)))
(unless ,at-start
(lispy-different))
(unwind-protect
(lispy-save-excursion
,@body)
(unless (eq ,at-start (lispy--leftp))
(lispy-different))))))
(defmacro lispy-flet (binding &rest body)
"Temporarily override BINDING and execute BODY."
(declare (indent 1))
(let* ((name (car binding))
(old (cl-gensym (symbol-name name))))
`(let ((,old (symbol-function ',name)))
(unwind-protect
(progn
(fset ',name (lambda ,@(cdr binding)))
,@body)
(fset ',name ,old)))))
(defmacro lispy-multipop (lst n)
"Remove LST's first N elements and return them."
`(if (<= (length ,lst) ,n)
(prog1 ,lst
(setq ,lst nil))
(prog1 ,lst
(setcdr
(nthcdr (1- ,n) (prog1 ,lst (setq ,lst (nthcdr ,n ,lst))))
nil))))
(defvar lispy-site-directory (file-name-directory
load-file-name)
"The directory where all of the lispy files are located.")
;;* Verb related
(defun lispy-disable-verbs-except (verb)
"Disable all verbs except VERB."
(mapc
(lambda (v) (funcall v -1))
(remq verb lispy-known-verbs)))
(defun lispy-quit ()
"Remove modifiers."
(interactive)
(lispy-disable-verbs-except nil))
(defmacro lispy-defverb (name grammar)
"Define the verb NAME.
GRAMMAR is a list of nouns that work with this verb."
(let* ((sym (intern (format "lispy-%s-mode" name)))
(keymap (intern (format "lispy-%s-mode-map" name)))
(doc (format "%s verb.\n\n \\{lispy-%s-mode-map}"
(capitalize name) name))
(lighter (format " [%s]" name))
(verb (intern (format "lispy-%s-verb" name)))
(msg (format "[%s]: %s" name
(mapconcat #'car grammar " "))))
`(progn
(defvar ,sym nil
,(format "Non-nil if Lispy-%s mode is enabled.
Use the command `%s' to change this variable."
(capitalize name)
sym))
(make-variable-buffer-local ',sym)
(defvar ,keymap (make-sparse-keymap))
(defun ,sym (&optional arg)
,doc
(interactive (list (or current-prefix-arg 'toggle)))
(let ((last-message (current-message)))
(setq ,sym (if (eq arg 'toggle)
(not ,sym)
(> (prefix-numeric-value arg)
0)))
(cond (,sym (lispy-disable-verbs-except ',sym))
(t nil))
(if (called-interactively-p 'any)
(unless (and (current-message)
(not (equal last-message (current-message))))
(if ,sym
(when lispy-verbose-verbs
(message ,msg))
(message "")))))
(force-mode-line-update))
(mapc (lambda (x)
(lispy-define-key
,keymap
(car x) (cadr x)
:disable ',sym))
',grammar)
(unless (memq ',sym lispy-known-verbs)
(push ',sym lispy-known-verbs))
(defun ,verb ()
(interactive)
(if (bound-and-true-p ,sym)
(,sym -1)
(,sym 1)))
(with-no-warnings
(add-minor-mode ',sym ,lighter ,keymap nil nil)))))
;;* Globals: navigation
(defsubst lispy-right-p ()
"Return t if after variable `lispy-right'."
(looking-back lispy-right
(line-beginning-position)))
(defsubst lispy-left-p ()
"Return t if before variable `lispy-left'."
(looking-at lispy-left))
(defun lispy-forward (arg)
"Move forward list ARG times or until error.
Return t if moved at least once,
otherwise call function `lispy-right' and return nil."
(interactive "p")
(when (= arg 0)
(setq arg 2000))
(lispy--exit-string)
(let ((bnd (lispy--bounds-comment)))
(when bnd
(goto-char (1+ (cdr bnd)))))
(let ((pt (point))
(r (lispy-dotimes arg
(when (= (point) (point-max))
(error "Reached end of buffer"))
(forward-list))))
;; `forward-list' returns true at and of buffer
(if (or (null r)
(= pt (point))
(and (not (lispy-right-p))
(progn
(backward-list)
(forward-list)
(= pt (point)))))
(prog1 nil
(lispy--out-forward 1))
(point))))
(defun lispy-backward (arg)
"Move backward list ARG times or until error.
If couldn't move backward at least once, move up backward and return nil."
(interactive "p")
(when (= arg 0)
(setq arg 2000))
(lispy--exit-string)
(let ((bnd (lispy--bounds-comment)))
(when bnd
(goto-char (car bnd))))
(let ((pt (point))
(r (lispy-dotimes arg
(when (= (point) (point-min))
(error "Reached beginning of buffer"))
(backward-list))))
;; `backward-list' returns true at beginning of buffer
(if (or (null r)
(= pt (point))
(and (not (lispy-left-p))
(progn
(forward-list)
(backward-list)
(= pt (point)))))
(prog1 nil
(condition-case nil
(progn
(lispy--out-forward 1)
(backward-list))
(error
(progn
(goto-char pt)
(up-list -1)))))
(point))))
(defun lispy-right (arg)
"Move outside list forwards ARG times.
Return nil on failure, t otherwise."
(interactive "p")
(when (called-interactively-p 'interactive)
(lispy--remember))
(when (bound-and-true-p abbrev-mode)
(ignore-errors (expand-abbrev)))
(cond ((region-active-p)
(lispy-mark-right arg))
((looking-at lispy-outline)
(lispy-outline-right))
(t
(lispy--out-forward arg))))
(defun lispy-right-nostring (arg)
"Call `lispy--out-forward' with ARG unless in string or comment.
Self-insert otherwise."
(interactive "p")
(if (or (lispy--in-string-or-comment-p)
(looking-back "?\\\\"
(line-beginning-position)))
(self-insert-command arg)
(lispy--out-forward arg)))
(defun lispy-left (arg)
"Move outside list forwards ARG times.
Return nil on failure, t otherwise."
(interactive "p")
(when (called-interactively-p 'interactive)
(lispy--remember))
(cond ((region-active-p)
(lispy-mark-left arg))
((looking-at lispy-outline)
(lispy-outline-left))
(t
(or (lispy--out-backward arg)
(ignore-errors
(up-list -1))))))
(defun lispy-out-forward-newline (arg)
"Call `lispy--out-forward', then ARG times `newline-and-indent'."
(interactive "p")
(lispy--out-forward 1)
(lispy-dotimes arg
(newline-and-indent)))
(defvar lispy-meol-point 1
"Point where `lispy-move-end-of-line' should go when already at eol.")
(defun lispy-move-end-of-line ()
"Forward to `move-end-of-line' unless already at end of line.
Then return to the point where it was called last.
If this point is inside string, move outside string."
(interactive)
(let ((pt (point))
bnd)
(if (eq pt (line-end-position))
(if (setq bnd (lispy--bounds-string))
(goto-char (cdr bnd))
(when (and (< lispy-meol-point pt)
(>= lispy-meol-point (line-beginning-position)))
(goto-char lispy-meol-point)
(when (setq bnd (lispy--bounds-string))
(goto-char (cdr bnd)))))
(setq lispy-meol-point (point))
(move-end-of-line 1))))
(defun lispy-move-beginning-of-line ()
"Forward to `move-beginning-of-line'.
Reveal outlines."
(interactive)
(lispy--ensure-visible)
(if (bolp)
(back-to-indentation)
(move-beginning-of-line 1)))
;;* Locals: navigation
(defun lispy-flow (arg)
"Move inside list ARG times.
Don't enter strings or comments.
Return nil if can't move."
(interactive "p")
(when (called-interactively-p 'interactive)
(lispy--remember))
(let ((pt (point))
success)
(lispy-dotimes arg
(cond ((or (lispy-left-p)
(and (lispy-bolp)
(looking-at ";")))
(forward-char)
(re-search-forward lispy-left nil t)
(while (and (lispy--in-string-or-comment-p)
(re-search-forward lispy-left nil t)))
(unless (lispy--in-string-or-comment-p)
(setq success t))
(backward-char))
((lispy-right-p)
(backward-char)
(re-search-backward lispy-right nil t)
(while (and (lispy--in-string-or-comment-p)
(re-search-backward lispy-right nil t)))
(unless (lispy--in-string-or-comment-p)
(setq success t))
(forward-char))))
(and (not (= (point) pt))
(or success
(prog1 nil
(goto-char pt))))))
(defun lispy-down (arg)
"Move down ARG times inside current list."
(interactive "p")
(when (called-interactively-p 'interactive)
(lispy--remember))
(cond ((region-active-p)
(let ((leftp (= (point) (region-beginning))))
(when leftp
(exchange-point-and-mark))
(cond ((save-excursion
(skip-chars-forward " \n")
(eobp)))
((lispy--symbolp (lispy--string-dwim))
(lispy-dotimes arg
(when (lispy-slurp 1)
(lispy-different)
(lispy-barf 1)
(lispy-different))))
((looking-at "[\n ]+\\(;\\)")
(deactivate-mark)
(goto-char (match-beginning 1))
(lispy--mark (lispy--bounds-comment)))
(t
(lispy-dotimes arg
(forward-sexp 1)
(lispy-different)
(if (lispy--in-comment-p)
(progn
(goto-char (1+ (cdr (lispy--bounds-comment))))
(skip-chars-forward "\n"))
(forward-sexp 2)
(forward-sexp -1))
(lispy-different))))
(when leftp
(exchange-point-and-mark))))
((lispy-left-p)
(lispy-forward arg)
(let ((pt (point))
(lispy-ignore-whitespace t))
(if (lispy-forward 1)
(lispy-backward 1)
(goto-char pt)
(lispy-different))))
((lispy-right-p)
(let ((pt (point)))
(unless (lispy-forward arg)
(goto-char pt))))
((or (looking-at lispy-outline)
(and (bolp) (looking-at ";")))
(let ((pt (point)))
(lispy-dotimes arg
(outline-next-visible-heading 1)
(if (looking-at lispy-outline)
(setq pt (point))
(goto-char pt)
(error "Last outline reached")))))
(t
(lispy-forward 1)
(lispy-backward 1)))
(lispy--ensure-visible))
(defun lispy-up (arg)
"Move up ARG times inside current list."
(interactive "p")
(when (called-interactively-p 'interactive)
(lispy--remember))
(cond ((region-active-p)
(let ((leftp (= (point) (region-beginning))))
(unless leftp
(exchange-point-and-mark))
(cond ((save-excursion
(skip-chars-backward "\n ")
(bobp)))
((looking-back "^ *\\(;\\)[^\n]*[\n ]*"
(save-excursion
(ignore-errors
(backward-sexp 1))
(point)))
(deactivate-mark)
(goto-char (match-beginning 1))
(lispy--mark (lispy--bounds-comment))
(exchange-point-and-mark))
((lispy--symbolp (lispy--string-dwim))
(lispy-dotimes arg
(when (lispy-slurp 1)
(lispy-different)
(lispy-barf 1)
(lispy-different))))
(t
(lispy-dotimes arg
(backward-sexp 1)
(lispy-different)
(if (lispy--in-comment-p)
(progn
(goto-char (1- (car (lispy--bounds-comment))))
(skip-chars-backward "\n"))
(backward-sexp 2)
(backward-sexp -1))
(lispy-different))))
(unless leftp
(exchange-point-and-mark))))
((lispy-left-p)
(let ((pt (point)))
(unless (lispy-backward arg)
(goto-char pt))))
((lispy-right-p)
(lispy-backward arg)
(let ((pt (point)))
(if (lispy-backward 1)
(lispy-forward 1)
(goto-char pt)
(lispy-different))))
((or (looking-at lispy-outline)
(and (bolp) (looking-at ";")))
(let ((pt (point)))
(lispy-dotimes arg
(outline-previous-visible-heading 1)
(if (looking-at lispy-outline)
(setq pt (point))
(goto-char pt)
(error "First outline reached")))))
(t
(lispy-backward 1)
(lispy-forward 1)))
(lispy--ensure-visible))
(defvar lispy-pos-ring (make-ring 100)
"Ring for point and mark position history.")
(defun lispy--remember ()
"Store the current point and mark in history."
(let* ((emptyp (zerop (ring-length lispy-pos-ring)))
(top (unless emptyp
(ring-ref lispy-pos-ring 0))))
(if (region-active-p)
(let* ((bnd (lispy--bounds-dwim))
(bnd (cons
(move-marker (make-marker) (car bnd))
(move-marker (make-marker) (cdr bnd)))))
(when (or emptyp
(not (equal bnd top)))
(ring-insert lispy-pos-ring bnd)))
(when (or emptyp
(not (equal (point-marker) top)))
(ring-insert lispy-pos-ring (point-marker))))))
(defun lispy-back (arg)
"Move point to ARGth previous position.
If position isn't special, move to previous or error."
(interactive "p")
(lispy-dotimes arg
(if (zerop (ring-length lispy-pos-ring))
(lispy-complain "At beginning of point history")
(let ((pt (ring-remove lispy-pos-ring 0)))
;; After deleting some text, markers that point to it converge
;; to one point
(while (and (not (zerop (ring-length lispy-pos-ring)))
(equal (ring-ref lispy-pos-ring 0)
pt))
(ring-remove lispy-pos-ring 0))
(if (consp pt)
(lispy--mark pt)
(deactivate-mark)
(goto-char pt))))))
(defun lispy-knight-down ()
"Make a knight-like move: down and right."
(interactive)
(cond ((lispy-right-p)
(lispy-different))
((lispy-left-p))
(t (lispy-backward 1)))
(let ((pt (point))
(bnd (save-excursion
(lispy-beginning-of-defun)
(lispy--bounds-list))))
(catch 'done
(while t
(forward-line)
(cond ((>= (point) (cdr bnd))
(goto-char pt)
(throw 'done nil))
((looking-at (concat "\\s-*" lispy-left))
(goto-char (1- (match-end 0)))
(throw 'done t)))))))
(defun lispy-knight-up ()
"Make a knight-like move: up and right."
(interactive)
(cond ((lispy-right-p)
(lispy-different))
((lispy-left-p))
(t (lispy-backward 1)))
(let ((pt (point))
(bnd (save-excursion
(lispy-beginning-of-defun)
(lispy--bounds-list))))
(catch 'done
(while t
(beginning-of-line 0)
(cond ((< (point) (car bnd))
(goto-char pt)
(throw 'done nil))
((looking-at (concat "\\s-*" lispy-left))
(goto-char (1- (match-end 0)))
(throw 'done t)))))))
(defun lispy-different ()
"Switch to the different side of current sexp."
(interactive)
(cond ((and (region-active-p)
(not (= (region-beginning) (region-end))))
(exchange-point-and-mark))
((lispy-right-p)
(backward-list))
((lispy-left-p)
(forward-list))
(t
(user-error "Unexpected"))))
;;* Globals: kill, yank, delete, mark, copy
(defun lispy-kill ()
"Kill line, keeping parens consistent."
(interactive)
(let (bnd)
(cond ((or (lispy--in-comment-p)
(and (lispy-bolp)
(looking-at " *;")))
(kill-line))