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Diffstat (limited to 'configs/shared/emacs/.emacs.d/elpa/evil-20180912.957/evil-common.el')
| -rw-r--r-- | configs/shared/emacs/.emacs.d/elpa/evil-20180912.957/evil-common.el | 3883 |
1 files changed, 0 insertions, 3883 deletions
diff --git a/configs/shared/emacs/.emacs.d/elpa/evil-20180912.957/evil-common.el b/configs/shared/emacs/.emacs.d/elpa/evil-20180912.957/evil-common.el deleted file mode 100644 index 62eda5fffaa4..000000000000 --- a/configs/shared/emacs/.emacs.d/elpa/evil-20180912.957/evil-common.el +++ /dev/null @@ -1,3883 +0,0 @@ -;;; evil-common.el --- Common functions and utilities -;; Author: Vegard Øye <vegard_oye at hotmail.com> -;; Maintainer: Vegard Øye <vegard_oye at hotmail.com> - -;; Version: 1.2.13 - -;; -;; This file is NOT part of GNU Emacs. - -;;; License: - -;; This file is part of Evil. -;; -;; Evil 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. -;; -;; Evil 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 Evil. If not, see <http://www.gnu.org/licenses/>. - -(require 'evil-vars) -(require 'evil-digraphs) -(require 'rect) -(require 'thingatpt) - -;;; Code: - -(declare-function evil-visual-state-p "evil-states") -(declare-function evil-visual-restore "evil-states") -(declare-function evil-motion-state "evil-states") -(declare-function evil-ex-p "evil-ex") -(declare-function evil-set-jump "evil-jumps") - -(condition-case nil - (require 'windmove) - (error - (message "evil: Could not load `windmove', \ -window commands not available.") - nil)) - -;;; Compatibility with different Emacs versions - -;; x-set-selection and x-get-selection have been deprecated since 25.1 -;; by gui-set-selection and gui-get-selection -(defalias 'evil-get-selection - (if (fboundp 'gui-get-selection) 'gui-get-selection 'x-get-selection)) -(defalias 'evil-set-selection - (if (fboundp 'gui-set-selection) 'gui-set-selection 'x-set-selection)) - -(defmacro evil-called-interactively-p () - "Wrapper for `called-interactively-p'. -In older versions of Emacs, `called-interactively-p' takes -no arguments. In Emacs 23.2 and newer, it takes one argument." - (called-interactively-p 'any)) -(make-obsolete 'evil-called-interactively-p - "please use (called-interactively-p 'any) instead." - "Git commit 222b791") - -;; macro helper -(eval-and-compile - (defun evil-unquote (exp) - "Return EXP unquoted." - (while (eq (car-safe exp) 'quote) - (setq exp (cadr exp))) - exp)) - -(defun evil-delay (condition form hook &optional append local name) - "Execute FORM when CONDITION becomes true, checking with HOOK. -NAME specifies the name of the entry added to HOOK. If APPEND is -non-nil, the entry is appended to the hook. If LOCAL is non-nil, -the buffer-local value of HOOK is modified." - (if (and (not (booleanp condition)) (eval condition)) - (eval form) - (let* ((name (or name (format "evil-delay-form-in-%s" hook))) - (fun (make-symbol name)) - (condition (or condition t))) - (fset fun `(lambda (&rest args) - (when ,condition - (remove-hook ',hook #',fun ',local) - ,form))) - (put fun 'permanent-local-hook t) - (add-hook hook fun append local)))) -(put 'evil-delay 'lisp-indent-function 2) - -;;; List functions - -(defun evil-add-to-alist (list-var key val &rest elements) - "Add the assocation of KEY and VAL to the value of LIST-VAR. -If the list already contains an entry for KEY, update that entry; -otherwise add at the end of the list." - (let ((tail (symbol-value list-var))) - (while (and tail (not (equal (car-safe (car-safe tail)) key))) - (setq tail (cdr tail))) - (if tail - (setcar tail (cons key val)) - (set list-var (append (symbol-value list-var) - (list (cons key val))))) - (if elements - (apply #'evil-add-to-alist list-var elements) - (symbol-value list-var)))) - -;; custom version of `delete-if' -(defun evil-filter-list (predicate list &optional pointer) - "Delete by side-effect all items satisfying PREDICATE in LIST. -Stop when reaching POINTER. If the first item satisfies PREDICATE, -there is no way to remove it by side-effect; therefore, write -\(setq foo (evil-filter-list 'predicate foo)) to be sure of -changing the value of `foo'." - (let ((tail list) elt head) - (while (and tail (not (eq tail pointer))) - (setq elt (car tail)) - (cond - ((funcall predicate elt) - (setq tail (cdr tail)) - (if head - (setcdr head tail) - (setq list tail))) - (t - (setq head tail - tail (cdr tail))))) - list)) - -(defun evil-member-if (predicate list &optional pointer) - "Find the first item satisfying PREDICATE in LIST. -Stop when reaching POINTER, which should point at a link -in the list." - (let (elt) - (catch 'done - (while (and (consp list) (not (eq list pointer))) - (setq elt (car list)) - (if (funcall predicate elt) - (throw 'done elt) - (setq list (cdr list))))))) - -(defun evil-member-recursive-if (predicate tree) - "Find the first item satisfying PREDICATE in TREE." - (cond - ((funcall predicate tree) - tree) - ((listp tree) - (catch 'done - (dolist (elt tree) - (when (setq elt (evil-member-recursive-if predicate elt)) - (throw 'done elt))))))) - -(defun evil-concat-lists (&rest sequences) - "Concatenate lists, removing duplicates. -Elements are compared with `eq'." - (let (result) - (dolist (sequence sequences) - (dolist (elt sequence) - (add-to-list 'result elt nil #'eq))) - (nreverse result))) - -(defun evil-concat-alists (&rest sequences) - "Concatenate association lists, removing duplicates. -An alist is a list of cons cells (KEY . VALUE) where each key -may occur only once. Later values overwrite earlier values." - (let (result) - (dolist (sequence sequences) - (dolist (elt sequence) - (setq result (assq-delete-all (car-safe elt) result)) - (push elt result))) - (nreverse result))) - -(defun evil-concat-plists (&rest sequences) - "Concatenate property lists, removing duplicates. -A property list is a list (:KEYWORD1 VALUE1 :KEYWORD2 VALUE2...) -where each keyword may occur only once. Later values overwrite -earlier values." - (let (result) - (dolist (sequence sequences result) - (while sequence - (setq result - (plist-put result (pop sequence) (pop sequence))))))) - -(defun evil-concat-keymap-alists (&rest sequences) - "Concatenate keymap association lists, removing duplicates. -A keymap alist is a list of cons cells (VAR . MAP) where each keymap -may occur only once, but where the variables may be repeated -\(e.g., (VAR . MAP1) (VAR . MAP2) is allowed). The order matters, -with the highest priority keymaps being listed first." - (let (result) - (dolist (sequence sequences) - (dolist (elt sequence) - (unless (rassq (cdr-safe elt) result) - (push elt result)))) - (nreverse result))) - -(defun evil-plist-delete (prop plist) - "Delete by side effect the property PROP from PLIST. -If PROP is the first property in PLIST, there is no way -to remove it by side-effect; therefore, write -\(setq foo (evil-plist-delete :prop foo)) to be sure of -changing the value of `foo'." - (let ((tail plist) elt head) - (while tail - (setq elt (car tail)) - (cond - ((eq elt prop) - (setq tail (cdr (cdr tail))) - (if head - (setcdr (cdr head) tail) - (setq plist tail))) - (t - (setq head tail - tail (cdr (cdr tail)))))) - plist)) - -(defun evil-get-property (alist key &optional prop) - "Return property PROP for KEY in ALIST. -ALIST is an association list with entries of the form -\(KEY . PLIST), where PLIST is a property list. -If PROP is nil, return all properties for KEY. -If KEY is t, return an association list of keys -and their PROP values." - (cond - ((null prop) - (cdr (assq key alist))) - ((eq key t) - (let (result val) - (dolist (entry alist result) - (setq key (car entry) - val (cdr entry)) - (when (plist-member val prop) - (setq val (plist-get val prop)) - (push (cons key val) result))))) - (t - (plist-get (cdr (assq key alist)) prop)))) - -(defun evil-put-property (alist-var key prop val &rest properties) - "Set PROP to VAL for KEY in ALIST-VAR. -ALIST-VAR points to an association list with entries of the form -\(KEY . PLIST), where PLIST is a property list storing PROP and VAL." - (set alist-var - (let* ((alist (symbol-value alist-var)) - (plist (cdr (assq key alist)))) - (setq plist (plist-put plist prop val)) - (when properties - (setq plist (evil-concat-plists plist properties) - val (car (last properties)))) - (setq alist (assq-delete-all key alist)) - (push (cons key plist) alist))) - val) - -(defun evil-state-property (state prop &optional value) - "Return the value of property PROP for STATE. -PROP is a keyword as used by `evil-define-state'. -STATE is the state's symbolic name. -If VALUE is non-nil and the value is a variable, -return the value of that variable." - (let ((val (evil-get-property evil-state-properties state prop))) - (if (and value (symbolp val) (boundp val)) - (symbol-value val) - val))) - -(defmacro evil-swap (this that &rest vars) - "Swap the values of variables THIS and THAT. -If three or more arguments are given, the values are rotated. -E.g., (evil-swap A B C) sets A to B, B to C, and C to A." - `(progn - (setq ,this (prog1 ,that - (setq ,that ,this))) - ,@(when vars - `((evil-swap ,that ,@vars))))) - -(defmacro evil-sort (min max &rest vars) - "Place the smallest value in MIN and the largest in MAX. -If three or more arguments are given, place the smallest -value in the first argument and the largest in the last, -sorting in between." - (let ((sorted (make-symbol "sortvar"))) - `(let ((,sorted (sort (list ,min ,max ,@vars) '<))) - (setq ,min (pop ,sorted) - ,max (pop ,sorted) - ,@(apply #'append - (mapcar #'(lambda (var) - (list var `(pop ,sorted))) - vars)))))) - -(defun evil-vector-to-string (vector) - "Turns vector into a string, changing <escape> to '\\e'" - (mapconcat (lambda (c) - (if (equal c 'escape) - "\e" - (make-string 1 c))) - vector - "")) - -;;; Command properties - -(defmacro evil-define-command (command &rest body) - "Define a command COMMAND. - -\(fn COMMAND (ARGS...) DOC [[KEY VALUE]...] BODY...)" - (declare (indent defun) - (debug (&define name - [&optional lambda-list] - [&optional stringp] - [&rest keywordp sexp] - [&optional ("interactive" [&rest form])] - def-body))) - (let ((interactive '(interactive)) - arg args doc doc-form key keys) - ;; collect arguments - (when (listp (car-safe body)) - (setq args (pop body))) - ;; collect docstring - (when (> (length body) 1) - (if (eq (car-safe (car-safe body)) 'format) - (setq doc-form (pop body)) - (when (stringp (car-safe body)) - (setq doc (pop body))))) - ;; collect keywords - (setq keys (plist-put keys :repeat t)) - (while (keywordp (car-safe body)) - (setq key (pop body) - arg (pop body)) - (unless nil ; TODO: add keyword check - (setq keys (plist-put keys key arg)))) - ;; collect `interactive' form - (when (and body (consp (car body)) - (eq (car (car body)) 'interactive)) - (let* ((iform (pop body)) - (result (apply #'evil-interactive-form (cdr iform))) - (form (car result)) - (attrs (cdr result))) - (setq interactive `(interactive ,form) - keys (evil-concat-plists keys attrs)))) - `(progn - ;; the compiler does not recognize `defun' inside `let' - ,(when (and command body) - `(defun ,command ,args - ,@(when doc `(,doc)) - ,interactive - ,@body)) - ,(when (and command doc-form) - `(put ',command 'function-documentation ,doc-form)) - ;; set command properties for symbol or lambda function - (let ((func ',(if (and (null command) body) - `(lambda ,args - ,interactive - ,@body) - command))) - (apply #'evil-set-command-properties func ',keys) - func)))) - -;; If no Evil properties are defined for the command, several parts of -;; Evil apply certain default rules; e.g., the repeat system decides -;; whether the command is repeatable by monitoring buffer changes. -(defun evil-has-command-property-p (command property) - "Whether COMMAND has Evil PROPERTY. -See also `evil-has-command-properties-p'." - (plist-member (evil-get-command-properties command) property)) - -(defun evil-has-command-properties-p (command) - "Whether Evil properties are defined for COMMAND. -See also `evil-has-command-property-p'." - (and (evil-get-command-properties command) t)) - -(defun evil-get-command-property (command property &optional default) - "Return the value of Evil PROPERTY of COMMAND. -If the command does not have the property, return DEFAULT. -See also `evil-get-command-properties'." - (if (evil-has-command-property-p command property) - (evil-get-property evil-command-properties command property) - default)) - -(defun evil-get-command-properties (command) - "Return all Evil properties of COMMAND. -See also `evil-get-command-property'." - (evil-get-property evil-command-properties command)) - -(defun evil-set-command-property (command property value) - "Set PROPERTY to VALUE for COMMAND. -To set multiple properties at once, see -`evil-set-command-properties' and `evil-add-command-properties'." - (evil-put-property 'evil-command-properties command property value)) -(defalias 'evil-put-command-property 'evil-set-command-property) - -(defun evil-add-command-properties (command &rest properties) - "Add PROPERTIES to COMMAND. -PROPERTIES should be a property list. -To replace all properties at once, use `evil-set-command-properties'." - (apply #'evil-put-property - 'evil-command-properties command properties)) - -(defun evil-set-command-properties (command &rest properties) - "Replace all of COMMAND's properties with PROPERTIES. -PROPERTIES should be a property list. -This erases all previous properties; to only add properties, -use `evil-set-command-property'." - (setq evil-command-properties - (assq-delete-all command evil-command-properties)) - (when properties - (apply #'evil-add-command-properties command properties))) - -(defun evil-remove-command-properties (command &rest properties) - "Remove PROPERTIES from COMMAND. -PROPERTIES should be a list of properties (:PROP1 :PROP2 ...). -If PROPERTIES is the empty list, all properties are removed." - (let (plist) - (when properties - (setq plist (evil-get-command-properties command)) - (dolist (property properties) - (setq plist (evil-plist-delete property plist)))) - (apply #'evil-set-command-properties command plist))) - -(defun evil-yank-handler (&optional motion) - "Return the yank handler for MOTION. -MOTION defaults to the current motion." - (setq motion (or motion evil-this-motion)) - (evil-get-command-property motion :yank-handler)) - -(defun evil-declare-motion (command) - "Declare COMMAND to be a movement function. -This ensures that it behaves correctly in Visual state." - (evil-add-command-properties command :keep-visual t :repeat 'motion)) - -(defun evil-declare-repeat (command) - "Declare COMMAND to be repeatable." - (evil-add-command-properties command :repeat t)) - -(defun evil-declare-not-repeat (command) - "Declare COMMAND to be nonrepeatable." - (evil-add-command-properties command :repeat nil)) - -(defun evil-declare-ignore-repeat (command) - "Declare COMMAND to be nonrepeatable." - (evil-add-command-properties command :repeat 'ignore)) - -(defun evil-declare-change-repeat (command) - "Declare COMMAND to be repeatable by buffer changes." - (evil-add-command-properties command :repeat 'change)) - -(defun evil-declare-insert-at-point-repeat (command) - "Declare COMMAND to be repeatable by buffer changes." - (evil-add-command-properties command :repeat 'insert-at-point)) - -(defun evil-declare-abort-repeat (command) - "Declare COMMAND to be nonrepeatable." - (evil-add-command-properties command :repeat 'abort)) - -(defun evil-delimited-arguments (string &optional num) - "Parse STRING as a sequence of delimited arguments. -Returns a list of NUM strings, or as many arguments as -the string contains. The first non-blank character is -taken to be the delimiter. If some arguments are missing -from STRING, the resulting list is padded with nil values. -Two delimiters following directly after each other gives -an empty string." - (save-match-data - (let ((string (or string "")) - (count (or num -1)) (idx 0) - argument delim match result) - (when (string-match "^[[:space:]]*\\([^[:space:]]\\)" string) - (setq delim (match-string 1 string) - argument (format "%s\\(\\(?:[\\].\\|[^%s]\\)*\\)" - (regexp-quote delim) - delim)) - (while (and (/= count 0) (string-match argument string idx)) - (setq match (match-string 1 string) - idx (match-end 1) - count (1- count)) - (when (= count 0) - (unless (save-match-data - (string-match - (format "%s[[:space:]]*$" delim) string idx)) - (setq match (substring string (match-beginning 1))))) - (unless (and (zerop (length match)) - (zerop (length (substring string idx)))) - (push match result)))) - (when (and num (< (length result) num)) - (dotimes (i (- num (length result))) - (push nil result))) - (nreverse result)))) - -(defun evil-concat-charsets (&rest sets) - "Concatenate character sets. -A character set is the part between [ and ] in a regular expression. -If any character set is complemented, the result is also complemented." - (let ((bracket "") (complement "") (hyphen "") result) - (save-match-data - (dolist (set sets) - (when (string-match-p "^\\^" set) - (setq set (substring set 1) - complement "^")) - (when (string-match-p "^]" set) - (setq set (substring set 1) - bracket "]")) - (when (string-match-p "^-" set) - (setq set (substring set 1) - hyphen "-")) - (setq result (concat result set))) - (format "%s%s%s%s" complement bracket hyphen result)))) - -;;; Key sequences - -(defun evil-keypress-parser (&optional input) - "Read from keyboard or INPUT and build a command description. -Returns (CMD COUNT), where COUNT is the numeric prefix argument. -Both COUNT and CMD may be nil." - (let (count negative) - (when input (setq unread-command-events (append input unread-command-events))) - (catch 'done - (while t - (let ((seq (read-key-sequence ""))) - (when seq - (let ((cmd (key-binding seq))) - (cond - ((null cmd) (throw 'done (list nil nil))) - ((arrayp cmd) ; keyboard macro, recursive call - (let ((cmd (evil-keypress-parser cmd))) - (throw 'done - (list (car cmd) - (if (or count (cadr cmd)) - (list (car cmd) (* (or count 1) - (or (cadr cmd) 1)))))))) - ((or (eq cmd #'digit-argument) - (and (eq cmd 'evil-digit-argument-or-evil-beginning-of-line) - count)) - (let* ((event (aref seq (- (length seq) 1))) - (char (or (when (characterp event) event) - (when (symbolp event) - (get event 'ascii-character)))) - (digit (if (or (characterp char) (integerp char)) - (- (logand char ?\177) ?0)))) - (setq count (+ (* 10 (or count 0)) digit)))) - ((eq cmd #'negative-argument) - (setq negative (not negative))) - (t - (throw 'done (list cmd - (and count - (* count - (if negative -1 1)))))))))))))) - -(defun evil-read-key (&optional prompt) - "Read a key from the keyboard. -Translates it according to the input method." - (let ((old-global-map (current-global-map)) - (new-global-map (make-sparse-keymap)) - (overriding-terminal-local-map nil) - (overriding-local-map evil-read-key-map) - seq char cmd) - (unwind-protect - (condition-case nil - (progn - (define-key new-global-map [menu-bar] - (lookup-key global-map [menu-bar])) - (define-key new-global-map [tool-bar] - (lookup-key global-map [tool-bar])) - (add-to-list 'new-global-map - (make-char-table 'display-table - 'self-insert-command) t) - (use-global-map new-global-map) - (setq seq (read-key-sequence prompt nil t) - char (aref seq 0) - cmd (key-binding seq)) - (while (arrayp cmd) - (setq char (aref cmd 0) - cmd (key-binding cmd))) - (cond - ((eq cmd 'self-insert-command) - char) - (cmd - (call-interactively cmd)) - (t - (user-error "No replacement character typed")))) - (quit - (when (fboundp 'evil-repeat-abort) - (evil-repeat-abort)) - (signal 'quit nil))) - (use-global-map old-global-map)))) - -(defun evil-read-quoted-char () - "Command that calls `read-quoted-char'. -This command can be used wherever `read-quoted-char' is required -as a command. Its main use is in the `evil-read-key-map'." - (interactive) - (read-quoted-char)) - -(defun evil-read-digraph-char (&optional hide-chars) - "Read two keys from keyboard forming a digraph. -This function creates an overlay at (point), hiding the next -HIDE-CHARS characters. HIDE-CHARS defaults to 1." - (interactive) - (let (char1 char2 string overlay) - (unwind-protect - (progn - (setq overlay (make-overlay (point) - (min (point-max) - (+ (or hide-chars 1) - (point))))) - (overlay-put overlay 'invisible t) - ;; create overlay prompt - (setq string "?") - (put-text-property 0 1 'face 'minibuffer-prompt string) - ;; put cursor at (i.e., right before) the prompt - (put-text-property 0 1 'cursor t string) - (overlay-put overlay 'after-string string) - (setq char1 (read-key)) - (setq string (string char1)) - (put-text-property 0 1 'face 'minibuffer-prompt string) - (put-text-property 0 1 'cursor t string) - (overlay-put overlay 'after-string string) - (setq char2 (read-key))) - (delete-overlay overlay)) - (or (evil-digraph (list char1 char2)) - ;; use the last character if undefined - char2))) - -(defun evil-read-motion (&optional motion count type modifier) - "Read a MOTION, motion COUNT and motion TYPE from the keyboard. -The type may be overridden with MODIFIER, which may be a type -or a Visual selection as defined by `evil-define-visual-selection'. -Return a list (MOTION COUNT [TYPE])." - (let ((modifiers '((evil-visual-char . char) - (evil-visual-line . line) - (evil-visual-block . block))) - command prefix) - (setq evil-this-type-modified nil) - (unless motion - (while (progn - (setq command (evil-keypress-parser) - motion (pop command) - prefix (pop command)) - (when prefix - (if count - (setq count (string-to-number - (concat (number-to-string count) - (number-to-string prefix)))) - (setq count prefix))) - ;; if the command is a type modifier, read more - (when (rassq motion evil-visual-alist) - (setq modifier - (or modifier - (car (rassq motion evil-visual-alist)))))))) - (when modifier - (setq type (or type (evil-type motion 'exclusive))) - (cond - ((eq modifier 'char) - ;; TODO: this behavior could be less hard-coded - (if (eq type 'exclusive) - (setq type 'inclusive) - (setq type 'exclusive))) - (t - (setq type modifier))) - (setq evil-this-type-modified type)) - (list motion count type))) - -(defun evil-mouse-events-p (keys) - "Returns non-nil iff KEYS contains a mouse event." - (catch 'done - (dotimes (i (length keys)) - (when (or (and (fboundp 'mouse-event-p) - (mouse-event-p (aref keys i))) - (mouse-movement-p (aref keys i))) - (throw 'done t))) - nil)) - -(defun evil-extract-count (keys) - "Splits the key-sequence KEYS into prefix-argument and the rest. -Returns the list (PREFIX CMD SEQ REST), where PREFIX is the -prefix count, CMD the command to be executed, SEQ the subsequence -calling CMD, and REST is all remaining events in the -key-sequence. PREFIX and REST may be nil if they do not exist. -If a command is bound to some keyboard macro, it is expanded -recursively." - (catch 'done - (let* ((len (length keys)) - (beg 0) - (end 1) - (found-prefix nil)) - (while (and (<= end len)) - (let ((cmd (key-binding (substring keys beg end)))) - (cond - ((memq cmd '(undefined nil)) - (user-error "No command bound to %s" (substring keys beg end))) - ((arrayp cmd) ; keyboard macro, replace command with macro - (setq keys (vconcat (substring keys 0 beg) - cmd - (substring keys end)) - end (1+ beg) - len (length keys))) - ((functionp cmd) - (if (or (memq cmd '(digit-argument negative-argument)) - (and found-prefix - (evil-get-command-property - cmd :digit-argument-redirection))) - ;; skip those commands - (setq found-prefix t ; found at least one prefix argument - beg end - end (1+ end)) - ;; a real command, finish - (throw 'done - (list (unless (zerop beg) - (string-to-number - (concat (substring keys 0 beg)))) - cmd - (substring keys beg end) - (when (< end len) - (substring keys end)))))) - (t ; append a further event - (setq end (1+ end)))))) - (user-error "Key sequence contains no complete binding")))) - -(defmacro evil-redirect-digit-argument (map keys target) - "Bind a wrapper function calling TARGET or `digit-argument'. -MAP is a keymap for binding KEYS to the wrapper for TARGET. -The wrapper only calls `digit-argument' if a prefix-argument -has already been started; otherwise TARGET is called." - (let* ((target (eval target)) - (wrapper (intern (format "evil-digit-argument-or-%s" - target)))) - `(progn - (define-key ,map ,keys ',wrapper) - (evil-define-command ,wrapper () - :digit-argument-redirection ,target - :keep-visual t - :repeat nil - (interactive) - (cond - (current-prefix-arg - (setq this-command #'digit-argument) - (call-interactively #'digit-argument)) - (t - (let ((target (or (command-remapping #',target) - #',target))) - (setq this-command target) - (call-interactively target)))))))) - -(defun evil-extract-append (file-or-append) - "Return an (APPEND . FILENAME) pair based on FILE-OR-APPEND. -FILE-OR-APPEND should either be a filename or a \">> FILE\" -directive. APPEND will be t if FILE-OR-APPEND is an append -directive and nil otherwise. FILENAME will be the extracted -filename." - (if (and (stringp file-or-append) - (string-match "\\(>> *\\)" file-or-append)) - (cons t (substring file-or-append(match-end 1))) - (cons nil file-or-append))) - -(defun evil-set-keymap-prompt (map prompt) - "Set the prompt-string of MAP to PROMPT." - (delq (keymap-prompt map) map) - (when prompt - (setcdr map (cons prompt (cdr map))))) - -(defun evil-lookup-key (map key) - "Returns non-nil value if KEY is bound in MAP." - (let ((definition (lookup-key map key))) - (if (numberp definition) ; in-band error - nil - definition))) - -;;; Display - -(defun evil-set-cursor (specs) - "Change the cursor's apperance according to SPECS. -SPECS may be a cursor type as per `cursor-type', a color -string as passed to `set-cursor-color', a zero-argument -function for changing the cursor, or a list of the above." - (unless (and (listp specs) - (null (cdr-safe (last specs)))) - (setq specs (list specs))) - (dolist (spec specs) - (cond - ((functionp spec) - (condition-case nil - (funcall spec) - (error nil))) - ((stringp spec) - (evil-set-cursor-color spec)) - (t - (setq cursor-type spec))))) - -(defun evil-set-cursor-color (color) - "Set the cursor color to COLOR." - (unless (equal (frame-parameter nil 'cursor-color) color) - ;; `set-cursor-color' forces a redisplay, so only - ;; call it when the color actually changes - (set-cursor-color color))) - -(defun evil-refresh-cursor (&optional state buffer) - "Refresh the cursor for STATE in BUFFER. -BUFFER defaults to the current buffer. If STATE is nil the -cursor type is either `evil-force-cursor' or the current state." - (when (and (boundp 'evil-local-mode) evil-local-mode) - (let* ((state (or state evil-force-cursor evil-state 'normal)) - (default (or evil-default-cursor t)) - (cursor (evil-state-property state :cursor t)) - (color (or (and (stringp cursor) cursor) - (and (listp cursor) - (evil-member-if #'stringp cursor)) - (frame-parameter nil 'cursor-color)))) - (with-current-buffer (or buffer (current-buffer)) - ;; if both STATE and `evil-default-cursor' - ;; specify a color, don't set it twice - (when (and color (listp default)) - (setq default (evil-filter-list #'stringp default))) - (evil-set-cursor default) - (evil-set-cursor cursor))))) - -(defmacro evil-save-cursor (&rest body) - "Save the current cursor; execute BODY; restore the cursor." - (declare (indent defun) - (debug t)) - `(let ((cursor cursor-type) - (color (frame-parameter (selected-frame) 'cursor-color)) - (inhibit-quit t)) - (unwind-protect - (progn ,@body) - (evil-set-cursor cursor) - (evil-set-cursor color)))) - -(defun evil-echo (string &rest args) - "Display an unlogged message in the echo area. -That is, the message is not logged in the *Messages* buffer. -\(To log the message, just use `message'.)" - (unless evil-no-display - (let (message-log-max) - (apply #'message string args)))) - -(defun evil-echo-area-save () - "Save the current echo area in `evil-echo-area-message'." - (setq evil-echo-area-message (current-message))) - -(defun evil-echo-area-restore () - "Restore the echo area from `evil-echo-area-message'. -Does not restore if `evil-write-echo-area' is non-nil." - (unless evil-write-echo-area - (if evil-echo-area-message - (message "%s" evil-echo-area-message) - (message nil))) - (setq evil-echo-area-message nil - evil-write-echo-area nil)) - -;; toggleable version of `with-temp-message' -(defmacro evil-save-echo-area (&rest body) - "Save the echo area; execute BODY; restore the echo area. -Intermittent messages are not logged in the *Messages* buffer." - (declare (indent defun) - (debug t)) - `(let ((inhibit-quit t) - evil-echo-area-message - evil-write-echo-area) - (unwind-protect - (progn - (evil-echo-area-save) - ,@body) - (evil-echo-area-restore)))) - -(defmacro evil-without-display (&rest body) - "Execute BODY without Evil displays. -Inhibits echo area messages, mode line updates and cursor changes." - (declare (indent defun) - (debug t)) - `(let ((evil-no-display t)) - ,@body)) - -(defun evil-num-visible-lines () - "Returns the number of currently visible lines." - (- (window-height) 1)) - -(defun evil-count-lines (beg end) - "Return absolute line-number-difference betweeen `beg` and `end`. -This should give the same results no matter where on the line `beg` -and `end` are." - (if (= beg end) - 0 - (let* ((last (max beg end)) - (end-at-bol (save-excursion (goto-char last) - (bolp)))) - (if end-at-bol - (count-lines beg end) - (1- (count-lines beg end)))))) - -;;; Movement - -(defun evil-normalize-position (pos) - "Return POS if it does not exceed the buffer boundaries. -If POS is less than `point-min', return `point-min'. -Is POS is more than `point-max', return `point-max'. -If POS is a marker, return its position." - (cond - ((not (number-or-marker-p pos)) - pos) - ((< pos (point-min)) - (point-min)) - ((> pos (point-max)) - (point-max)) - ((markerp pos) - (marker-position pos)) - (t - pos))) - -(defmacro evil-save-goal-column (&rest body) - "Restores the goal column after execution of BODY. -See also `evil-save-column'." - (declare (indent defun) - (debug t)) - `(let ((goal-column goal-column) - (temporary-goal-column temporary-goal-column)) - ,@body)) - -(defmacro evil-save-column (&rest body) - "Restores the column after execution of BODY. -See also `evil-save-goal-column'." - (declare (indent defun) - (debug t)) - `(let ((col (current-column))) - (evil-save-goal-column - ,@body - (move-to-column col)))) - -(defun evil-narrow (beg end) - "Restrict the buffer to BEG and END. -BEG or END may be nil, specifying a one-sided restriction including -`point-min' or `point-max'. See also `evil-with-restriction.'" - (setq beg (or (evil-normalize-position beg) (point-min))) - (setq end (or (evil-normalize-position end) (point-max))) - (narrow-to-region beg end)) - -(defmacro evil-with-restriction (beg end &rest body) - "Execute BODY with the buffer narrowed to BEG and END. -BEG or END may be nil as passed to `evil-narrow'; this creates -a one-sided restriction." - (declare (indent 2) - (debug t)) - `(save-restriction - (let ((evil-restriction-stack - (cons (cons (point-min) (point-max)) evil-restriction-stack))) - (evil-narrow ,beg ,end) - ,@body))) - -(defmacro evil-without-restriction (&rest body) - "Execute BODY with the top-most narrowing removed. -This works only if the previous narrowing has been generated by -`evil-with-restriction'." - (declare (indent defun) - (debug t)) - `(save-restriction - (widen) - (narrow-to-region (car (car evil-restriction-stack)) - (cdr (car evil-restriction-stack))) - (let ((evil-restriction-stack (cdr evil-restriction-stack))) - ,@body))) - -(defmacro evil-narrow-to-field (&rest body) - "Narrow to the current field." - (declare (indent defun) - (debug t)) - `(evil-with-restriction (field-beginning) (field-end) - ,@body)) - -(defun evil-move-beginning-of-line (&optional arg) - "Move to the beginning of the line as displayed. -Like `move-beginning-of-line', but retains the goal column." - (evil-save-goal-column - (move-beginning-of-line arg) - (beginning-of-line))) - -(defun evil-move-end-of-line (&optional arg) - "Move to the end of the line as displayed. -Like `move-end-of-line', but retains the goal column." - (evil-save-goal-column - (move-end-of-line arg) - (end-of-line))) - -(defun evil-adjust-cursor (&optional force) - "Move point one character back if at the end of a non-empty line. -This behavior is contingent on the variable `evil-move-cursor-back'; -use the FORCE parameter to override it." - (when (and (eolp) - (not evil-move-beyond-eol) - (not (bolp)) - (= (point) - (save-excursion - (evil-move-end-of-line) - (point)))) - (evil-move-cursor-back force))) - -(defun evil-move-cursor-back (&optional force) - "Move point one character back within the current line. -Contingent on the variable `evil-move-cursor-back' or the FORCE -argument. Honors field boundaries, i.e., constrains the movement -to the current field as recognized by `line-beginning-position'." - (when (or evil-move-cursor-back force) - (unless (or (= (point) (line-beginning-position)) - (and (boundp 'visual-line-mode) - visual-line-mode - (= (point) (save-excursion - (beginning-of-visual-line) - (point))))) - (backward-char)))) - -(defun evil-line-position (line &optional column) - "Return the position of LINE. -If COLUMN is specified, return its position on the line. -A negative number means the end of the line." - (save-excursion - (when (fboundp 'evil-goto-line) - (evil-goto-line line)) - (if (numberp column) - (if (< column 0) - (beginning-of-line 2) - (move-to-column column)) - (beginning-of-line)) - (point))) - -(defun evil-column (&optional pos) - "Return the horizontal position of POS. -POS defaults to point." - (save-excursion - (when pos - (goto-char pos)) - (current-column))) - -(defun evil-move-to-column (column &optional dir force) - "Move point to column COLUMN in the current line. -Places point at left of the tab character (at the right if DIR -is non-nil) and returns point." - (interactive "p") - (move-to-column column force) - (unless force - (when (or (not dir) (and (numberp dir) (< dir 1))) - (when (> (current-column) column) - (evil-move-cursor-back)))) - (point)) - -(defmacro evil-loop (spec &rest body) - "Loop with countdown variable. -Evaluate BODY with VAR counting down from COUNT to 0. -COUNT can be negative, in which case VAR counts up instead. -The return value is the value of VAR when the loop -terminates, which is 0 if the loop completes successfully. -RESULT specifies a variable for storing this value. - -\(fn (VAR COUNT [RESULT]) BODY...)" - (declare (indent defun) - (debug dolist)) - (let* ((i (make-symbol "loopvar")) - (var (pop spec)) - (count (pop spec)) - (result (pop spec))) - (setq var (or (unless (eq var result) var) i) - result (or result var)) - `(let ((,var ,count)) - (setq ,result ,var) - (while (/= ,var 0) - ,@body - (if (> ,var 0) - (setq ,var (1- ,var)) - (setq ,var (1+ ,var))) - (setq ,result ,var)) - ,var))) - -;;; Motions - -(defmacro evil-motion-loop (spec &rest body) - "Loop a certain number of times. -Evaluate BODY repeatedly COUNT times with VAR bound to 1 or -1, -depending on the sign of COUNT. RESULT, if specified, holds -the number of unsuccessful iterations, which is 0 if the loop -completes successfully. This is also the return value. - -Each iteration must move point; if point does not change, -the loop immediately quits. See also `evil-loop'. - -\(fn (VAR COUNT [RESULT]) BODY...)" - (declare (indent defun) - (debug ((symbolp form &optional symbolp) body))) - (let* ((var (or (pop spec) (make-symbol "unitvar"))) - (countval (or (pop spec) 0)) - (result (pop spec)) - (i (make-symbol "loopvar")) - (count (make-symbol "countvar")) - (done (make-symbol "donevar")) - (orig (make-symbol "origvar"))) - `(let* ((,count ,countval) - (,var (if (< ,count 0) -1 1))) - (catch ',done - (evil-loop (,i ,count ,result) - (let ((,orig (point))) - ,@body - (when (= (point) ,orig) - (throw ',done ,i)))))))) - -(defmacro evil-signal-without-movement (&rest body) - "Catches errors provided point moves within this scope." - (declare (indent defun) - (debug t)) - `(let ((p (point))) - (condition-case err - (progn ,@body) - (error - (when (= p (point)) - (signal (car err) (cdr err))))))) - -(defun evil-signal-at-bob-or-eob (&optional count) - "Signals error if `point' is at boundaries. -If `point' is at bob and COUNT is negative this function signal -'beginning-of-buffer. If `point' is at eob and COUNT is positive -this function singal 'end-of-buffer. This function should be used -in motions. COUNT defaults to 1." - (setq count (or count 1)) - (cond - ((< count 0) (evil-signal-at-bob)) - ((> count 0) (evil-signal-at-eob)))) - -(defun evil-signal-at-bob () - "Signals 'beginning-of-buffer if `point' is at bob. -This function should be used in backward motions. If `point' is at -bob so that no further backward motion is possible the error -'beginning-of-buffer is raised." - (when (bobp) (signal 'beginning-of-buffer nil))) - -(defun evil-signal-at-eob () - "Signals 'end-of-buffer if `point' is at eob. -This function should be used in forward motions. If `point' is close -to eob so that no further forward motion is possible the error -'end-of-buffer is raised. This is the case if `point' is at -`point-max' or if is one position before `point-max', -`evil-move-cursor-back' is non-nil and `point' is not at the end -of a line. The latter is necessary because `point' cannot be -moved to `point-max' if `evil-move-cursor-back' is non-nil and -the last line in the buffer is not empty." - (when (or (eobp) - (and (not (eolp)) - evil-move-cursor-back - (save-excursion (forward-char) (eobp)))) - (signal 'end-of-buffer nil))) - -(defmacro evil-with-hproject-point-on-window (&rest body) - "Project point after BODY to current window. -If point is on a position left or right of the current window -then it is moved to the left and right boundary of the window, -respectively. If `auto-hscroll-mode' is non-nil then the left and -right positions are increased or decreased, respectively, by -`horizontal-margin' so that no automatic scrolling occurs." - (declare (indent defun) - (debug t)) - (let ((diff (make-symbol "diff")) - (left (make-symbol "left")) - (right (make-symbol "right"))) - `(let ((,diff (if auto-hscroll-mode (1+ hscroll-margin) 0)) - auto-hscroll-mode) - ,@body - (let* ((,left (+ (window-hscroll) ,diff)) - (,right (+ (window-hscroll) (window-width) (- ,diff) -1))) - (move-to-column (min (max (current-column) ,left) ,right)))))) - -(defun evil-goto-min (&rest positions) - "Go to the smallest position in POSITIONS. -Non-numerical elements are ignored. -See also `evil-goto-max'." - (when (setq positions (evil-filter-list - #'(lambda (elt) - (not (number-or-marker-p elt))) - positions)) - (goto-char (apply #'min positions)))) - -(defun evil-goto-max (&rest positions) - "Go to the largest position in POSITIONS. -Non-numerical elements are ignored. -See also `evil-goto-min'." - (when (setq positions (evil-filter-list - #'(lambda (elt) - (not (number-or-marker-p elt))) - positions)) - (goto-char (apply #'max positions)))) - -(defun evil-forward-not-thing (thing &optional count) - "Move point to the end or beginning of the complement of THING." - (evil-motion-loop (dir (or count 1)) - (let (bnd) - (cond - ((> dir 0) - (while (and (setq bnd (bounds-of-thing-at-point thing)) - (< (point) (cdr bnd))) - (goto-char (cdr bnd))) - ;; no thing at (point) - (if (zerop (forward-thing thing)) - ;; now at the end of the next thing - (let ((bnd (bounds-of-thing-at-point thing))) - (if (or (< (car bnd) (point)) ; end of a thing - (= (car bnd) (cdr bnd))) ; zero width thing - (goto-char (car bnd)) - ;; beginning of yet another thing, go back - (forward-thing thing -1))) - (goto-char (point-max)))) - (t - (while (and (not (bobp)) - (or (backward-char) t) - (setq bnd (bounds-of-thing-at-point thing)) - (< (point) (cdr bnd))) - (goto-char (car bnd))) - ;; either bob or no thing at point - (goto-char - (if (and (not (bobp)) - (zerop (forward-thing thing -1)) - (setq bnd (bounds-of-thing-at-point thing))) - (cdr bnd) - (point-min)))))))) - -(defun evil-bounds-of-not-thing-at-point (thing &optional which) - "Returns the bounds of a complement of THING at point. -If there is a THING at point nil is returned. Otherwise if WHICH -is nil or 0 a cons cell (BEG . END) is returned. If WHICH is -negative the beginning is returned. If WHICH is positive the END -is returned." - (let ((pnt (point))) - (let ((beg (save-excursion - (and (zerop (forward-thing thing -1)) - (forward-thing thing)) - (if (> (point) pnt) (point-min) (point)))) - (end (save-excursion - (and (zerop (forward-thing thing)) - (forward-thing thing -1)) - (if (< (point) pnt) (point-max) (point))))) - (when (and (<= beg (point)) (<= (point) end) (< beg end)) - (cond - ((or (not which) (zerop which)) (cons beg end)) - ((< which 0) beg) - ((> which 0) end)))))) - -(defun evil-forward-nearest (count &rest forwards) - "Moves point forward to the first of several motions. -FORWARDS is a list of forward motion functions (i.e. each moves -point forward to the next end of a text object (if passed a +1) -or backward to the preceeding beginning of a text object (if -passed a -1)). This function calls each of these functions once -and moves point to the nearest of the resulting positions. If -COUNT is positive point is moved forward COUNT times, if negative -point is moved backward -COUNT times." - (evil-motion-loop (dir (or count 1)) - (let ((pnt (point)) - (nxt (if (> dir 0) (point-max) (point-min)))) - (dolist (fwd forwards) - (goto-char pnt) - (condition-case nil - (evil-with-restriction - (and (< dir 0) - (save-excursion - (goto-char nxt) - (line-beginning-position 0))) - (and (> dir 0) - (save-excursion - (goto-char nxt) - (line-end-position 2))) - (if (and (zerop (funcall fwd dir)) - (/= (point) pnt) - (or (and (> dir 0) (< (point) nxt)) - (and (< dir 0) (> (point) nxt)))) - (setq nxt (point)))) - (error))) - (goto-char nxt)))) - -(defun bounds-of-evil-string-at-point (&optional state) - "Return the bounds of a string at point. -If STATE is given it used a parsing state at point." - (save-excursion - (let ((state (or state (syntax-ppss)))) - (and (nth 3 state) - (cons (nth 8 state) - (and (parse-partial-sexp (point) - (point-max) - nil - nil - state - 'syntax-table) - (point))))))) -(put 'evil-string 'bounds-of-thing-at-point #'bounds-of-evil-string-at-point) - -(defun bounds-of-evil-comment-at-point () - "Return the bounds of a string at point." - (save-excursion - (let ((state (syntax-ppss))) - (and (nth 4 state) - (cons (nth 8 state) - (and (parse-partial-sexp (point) - (point-max) - nil - nil - state - 'syntax-table) - (point))))))) -(put 'evil-comment 'bounds-of-thing-at-point #'bounds-of-evil-comment-at-point) - -;; The purpose of this function is the provide line motions which -;; preserve the column. This is how `previous-line' and `next-line' -;; work, but unfortunately the behaviour is hard-coded: if and only if -;; the last command was `previous-line' or `next-line', the column is -;; preserved. Furthermore, in contrast to Vim, when we cannot go -;; further, those motions move point to the beginning resp. the end of -;; the line (we never want point to leave its column). The code here -;; comes from simple.el, and I hope it will work in future. -(defun evil-line-move (count &optional noerror) - "A wrapper for line motions which conserves the column. -Signals an error at buffer boundaries unless NOERROR is non-nil." - (cond - (noerror - (condition-case nil - (evil-line-move count) - (error nil))) - (t - (evil-signal-without-movement - (setq this-command (if (>= count 0) - #'next-line - #'previous-line)) - (let ((opoint (point))) - (condition-case err - (with-no-warnings - (funcall this-command (abs count))) - ((beginning-of-buffer end-of-buffer) - (let ((col (or goal-column - (if (consp temporary-goal-column) - (car temporary-goal-column) - temporary-goal-column)))) - (if line-move-visual - (vertical-motion (cons col 0)) - (line-move-finish col opoint (< count 0))) - ;; Maybe we should just `ding'? - (signal (car err) (cdr err)))))))))) - -(defun evil-forward-syntax (syntax &optional count) - "Move point to the end or beginning of a sequence of characters in -SYNTAX. -Stop on reaching a character not in SYNTAX." - (let ((notsyntax (if (= (aref syntax 0) ?^) - (substring syntax 1) - (concat "^" syntax)))) - (evil-motion-loop (dir (or count 1)) - (cond - ((< dir 0) - (skip-syntax-backward notsyntax) - (skip-syntax-backward syntax)) - (t - (skip-syntax-forward notsyntax) - (skip-syntax-forward syntax)))))) - -(defun evil-forward-chars (chars &optional count) - "Move point to the end or beginning of a sequence of CHARS. -CHARS is a character set as inside [...] in a regular expression." - (let ((notchars (if (= (aref chars 0) ?^) - (substring chars 1) - (concat "^" chars)))) - (evil-motion-loop (dir (or count 1)) - (cond - ((< dir 0) - (skip-chars-backward notchars) - (skip-chars-backward chars)) - (t - (skip-chars-forward notchars) - (skip-chars-forward chars)))))) - -(defun evil-up-block (beg end &optional count) - "Move point to the end or beginning of text enclosed by BEG and END. -BEG and END should be regular expressions matching the opening -and closing delimiters, respectively. If COUNT is greater than -zero point is moved forward otherwise it is moved -backwards. Whenever an opening delimiter is found the COUNT is -increased by one, if a closing delimiter is found the COUNT is -decreased by one. The motion stops when COUNT reaches zero. The -match-data reflects the last successful match (that caused COUNT -to reach zero). The behaviour of this functions is similar to -`up-list'." - (let* ((count (or count 1)) - (forwardp (> count 0)) - (dir (if forwardp +1 -1))) - (catch 'done - (while (not (zerop count)) - (let* ((pnt (point)) - (cl (save-excursion - (and (re-search-forward (if forwardp end beg) nil t dir) - (or (/= pnt (point)) - (progn - ;; zero size match, repeat search from - ;; the next position - (forward-char dir) - (re-search-forward (if forwardp end beg) nil t dir))) - (point)))) - (match (match-data t)) - (op (save-excursion - (and (not (equal beg end)) - (re-search-forward (if forwardp beg end) cl t dir) - (or (/= pnt (point)) - (progn - ;; zero size match, repeat search from - ;; the next position - (forward-char dir) - (re-search-forward (if forwardp beg end) cl t dir))) - (point))))) - (cond - ((not cl) - (goto-char (if forwardp (point-max) (point-min))) - (set-match-data nil) - (throw 'done count)) - (t - (if op - (progn - (setq count (if forwardp (1+ count) (1- count))) - (goto-char op)) - (setq count (if forwardp (1- count) (1+ count))) - (if (zerop count) (set-match-data match)) - (goto-char cl)))))) - 0))) - -(defun evil-up-paren (open close &optional count) - "Move point to the end or beginning of balanced parentheses. -OPEN and CLOSE should be characters identifying the opening and -closing parenthesis, respectively. If COUNT is greater than zero -point is moved forward otherwise it is moved backwards. Whenever -an opening delimiter is found the COUNT is increased by one, if a -closing delimiter is found the COUNT is decreased by one. The -motion stops when COUNT reaches zero. The match-data reflects the -last successful match (that caused COUNT to reach zero)." - ;; Always use the default `forward-sexp-function'. This is important - ;; for modes that use a custom one like `python-mode'. - ;; (addresses #364) - (let (forward-sexp-function) - (with-syntax-table (copy-syntax-table (syntax-table)) - (modify-syntax-entry open (format "(%c" close)) - (modify-syntax-entry close (format ")%c" open)) - (let ((rest (evil-motion-loop (dir count) - (let ((pnt (point))) - (condition-case nil - (cond - ((> dir 0) - (while (progn - (up-list dir) - (/= (char-before) close)))) - (t - (while (progn - (up-list dir) - (/= (char-after) open))))) - (error (goto-char pnt))))))) - (cond - ((= rest count) (set-match-data nil)) - ((> count 0) (set-match-data (list (1- (point)) (point)))) - (t (set-match-data (list (point) (1+ (point)))))) - rest)))) - -(defun evil-up-xml-tag (&optional count) - "Move point to the end or beginning of balanced xml tags. -OPEN and CLOSE should be characters identifying the opening and -closing parenthesis, respectively. If COUNT is greater than zero -point is moved forward otherwise it is moved backwards. Whenever -an opening delimiter is found the COUNT is increased by one, if a -closing delimiter is found the COUNT is decreased by one. The -motion stops when COUNT reaches zero. The match-data reflects the -last successful match (that caused COUNT to reach zero)." - (let* ((dir (if (> (or count 1) 0) +1 -1)) - (count (abs (or count 1))) - (match (> count 0)) - (op (if (> dir 0) 1 2)) - (cl (if (> dir 0) 2 1)) - (orig (point)) - pnt tags match) - (catch 'done - (while (> count 0) - ;; find the previous opening tag - (while - (and (setq match - (re-search-forward - "<\\([^/ >]+\\)\\(?:[^\"/>]\\|\"[^\"]*\"\\)*?>\\|</\\([^>]+?\\)>" - nil t dir)) - (cond - ((match-beginning op) - (push (match-string op) tags)) - ((null tags) nil) ; free closing tag - ((and (< dir 0) - (string= (car tags) (match-string cl))) - ;; in backward direction we only accept matching - ;; tags. If the current tag is a free opener - ;; without matching closing tag, the subsequents - ;; test will make us ignore this tag - (pop tags)) - ((and (> dir 0)) - ;; non matching openers are considered free openers - (while (and tags - (not (string= (car tags) - (match-string cl)))) - (pop tags)) - (pop tags))))) - (unless (setq match (and match (match-data t))) - (setq match nil) - (throw 'done count)) - ;; found closing tag, look for corresponding opening tag - (cond - ((> dir 0) - (setq pnt (match-end 0)) - (goto-char (match-beginning 0))) - (t - (setq pnt (match-beginning 0)) - (goto-char (match-end 0)))) - (let* ((tag (match-string cl)) - (refwd (concat "<\\(/\\)?" - (regexp-quote tag) - "\\(?:>\\| \\(?:[^\"/>]\\|\"[^\"]*\"\\)*?>\\)")) - (cnt 1)) - (while (and (> cnt 0) (re-search-backward refwd nil t dir)) - (setq cnt (+ cnt (if (match-beginning 1) dir (- dir))))) - (if (zerop cnt) (setq count (1- count) tags nil)) - (goto-char pnt))) - (if (> count 0) - (set-match-data nil) - (set-match-data match) - (goto-char (if (> dir 0) (match-end 0) (match-beginning 0))))) - ;; if not found, set to point-max/point-min - (unless (zerop count) - (set-match-data nil) - (goto-char (if (> dir 0) (point-max) (point-min))) - (if (/= (point) orig) (setq count (1- count)))) - (* dir count))) - -(defun evil-forward-quote (quote &optional count) - "Move point to the end or beginning of a string. -QUOTE is the character delimiting the string. If COUNT is greater -than zero point is moved forward otherwise it is moved -backwards." - (let (reset-parser) - (with-syntax-table (copy-syntax-table (syntax-table)) - (unless (= (char-syntax quote) ?\") - (modify-syntax-entry quote "\"") - (setq reset-parser t)) - ;; global parser state is out of state, use local one - (let* ((pnt (point)) - (state (save-excursion - (beginning-of-defun) - (parse-partial-sexp (point) pnt nil nil (syntax-ppss)))) - (bnd (bounds-of-evil-string-at-point state))) - (when (and bnd (< (point) (cdr bnd))) - ;; currently within a string - (if (> count 0) - (progn - (goto-char (cdr bnd)) - (setq count (1- count))) - (goto-char (car bnd)) - (setq count (1+ count)))) - ;; forward motions work with local parser state - (cond - ((> count 0) - ;; no need to reset global parser state because we only use - ;; the local one - (setq reset-parser nil) - (catch 'done - (while (and (> count 0) (not (eobp))) - (setq state (parse-partial-sexp (point) (point-max) - nil - nil - state - 'syntax-table)) - (cond - ((nth 3 state) - (setq bnd (bounds-of-thing-at-point 'evil-string)) - (goto-char (cdr bnd)) - (setq count (1- count))) - ((eobp) (goto-char pnt) (throw 'done nil)))))) - ((< count 0) - ;; need to update global cache because of backward motion - (setq reset-parser (and reset-parser (point))) - (save-excursion - (beginning-of-defun) - (syntax-ppss-flush-cache (point))) - (catch 'done - (while (and (< count 0) (not (bobp))) - (setq pnt (point)) - (while (and (not (bobp)) - (or (eobp) (/= (char-after) quote))) - (backward-char)) - (cond - ((setq bnd (bounds-of-thing-at-point 'evil-string)) - (goto-char (car bnd)) - (setq count (1+ count))) - ((bobp) (goto-char pnt) (throw 'done nil)) - (t (backward-char)))))) - (t (setq reset-parser nil))))) - (when reset-parser - ;; reset global cache - (save-excursion - (goto-char reset-parser) - (beginning-of-defun) - (syntax-ppss-flush-cache (point)))) - count)) - -;;; Thing-at-point motion functions for Evil text objects and motions -(defun forward-evil-empty-line (&optional count) - "Move forward COUNT empty lines." - (setq count (or count 1)) - (cond - ((> count 0) - (while (and (> count 0) (not (eobp))) - (when (and (bolp) (eolp)) - (setq count (1- count))) - (forward-line 1))) - (t - (while (and (< count 0) (not (bobp)) - (zerop (forward-line -1))) - (when (and (bolp) (eolp)) - (setq count (1+ count)))))) - count) - -(defun forward-evil-space (&optional count) - "Move forward COUNT whitespace sequences [[:space:]]+." - (evil-forward-chars "[:space:]" count)) - -(defun forward-evil-word (&optional count) - "Move forward COUNT words. -Moves point COUNT words forward or (- COUNT) words backward if -COUNT is negative. Point is placed after the end of the word (if -forward) or at the first character of the word (if backward). A -word is a sequence of word characters matching -\[[:word:]] (recognized by `forward-word'), a sequence of -non-whitespace non-word characters '[^[:word:]\\n\\r\\t\\f ]', or -an empty line matching ^$." - (evil-forward-nearest - count - #'(lambda (&optional cnt) - (let ((word-separating-categories evil-cjk-word-separating-categories) - (word-combining-categories evil-cjk-word-combining-categories) - (pnt (point))) - (forward-word cnt) - (if (= pnt (point)) cnt 0))) - #'(lambda (&optional cnt) - (evil-forward-chars "^[:word:]\n\r\t\f " cnt)) - #'forward-evil-empty-line)) - -(defun forward-evil-WORD (&optional count) - "Move forward COUNT \"WORDS\". -Moves point COUNT WORDS forward or (- COUNT) WORDS backward if -COUNT is negative. Point is placed after the end of the WORD (if -forward) or at the first character of the WORD (if backward). A -WORD is a sequence of non-whitespace characters -'[^\\n\\r\\t\\f ]', or an empty line matching ^$." - (evil-forward-nearest count - #'(lambda (&optional cnt) - (evil-forward-chars "^\n\r\t\f " cnt)) - #'forward-evil-empty-line)) - -(defun forward-evil-symbol (&optional count) - "Move forward COUNT symbols. -Moves point COUNT symbols forward or (- COUNT) symbols backward -if COUNT is negative. Point is placed after the end of the -symbol (if forward) or at the first character of the symbol (if -backward). A symbol is either determined by `forward-symbol', or -is a sequence of characters not in the word, symbol or whitespace -syntax classes." - (evil-forward-nearest - count - #'(lambda (&optional cnt) - (evil-forward-syntax "^w_->" cnt)) - #'(lambda (&optional cnt) - (let ((pnt (point))) - (forward-symbol cnt) - (if (= pnt (point)) cnt 0))) - #'forward-evil-empty-line)) - -(defun forward-evil-defun (&optional count) - "Move forward COUNT defuns. -Moves point COUNT defuns forward or (- COUNT) defuns backward -if COUNT is negative. A defun is defined by -`beginning-of-defun' and `end-of-defun' functions." - (evil-motion-loop (dir (or count 1)) - (if (> dir 0) (end-of-defun) (beginning-of-defun)))) - -(defun forward-evil-sentence (&optional count) - "Move forward COUNT sentences. -Moves point COUNT sentences forward or (- COUNT) sentences -backward if COUNT is negative. This function is the same as -`forward-sentence' but returns the number of sentences that could -NOT be moved over." - (evil-motion-loop (dir (or count 1)) - (condition-case nil - (forward-sentence dir) - (error)))) - -(defun forward-evil-paragraph (&optional count) - "Move forward COUNT paragraphs. -Moves point COUNT paragraphs forward or (- COUNT) paragraphs backward -if COUNT is negative. A paragraph is defined by -`start-of-paragraph-text' and `forward-paragraph' functions." - (evil-motion-loop (dir (or count 1)) - (cond - ((> dir 0) (forward-paragraph)) - ((not (bobp)) (start-of-paragraph-text) (beginning-of-line))))) - -(defvar evil-forward-quote-char ?\" - "The character to be used by `forward-evil-quote'.") - -(defun forward-evil-quote (&optional count) - "Move forward COUNT strings. -The quotation character is specified by the global variable -`evil-forward-quote-char'. This character is passed to -`evil-forward-quote'." - (evil-forward-quote evil-forward-quote-char count)) - -(defun forward-evil-quote-simple (&optional count) - "Move forward COUNT strings. -The quotation character is specified by the global variable -`evil-forward-quote-char'. This functions uses Vim's rules -parsing from the beginning of the current line for quotation -characters. It should only be used when looking for strings -within comments and buffer *must* be narrowed to the comment." - (let ((dir (if (> (or count 1) 0) 1 -1)) - (ch evil-forward-quote-char) - (pnt (point)) - (cnt 0)) - (beginning-of-line) - ;; count number of quotes before pnt - (while (< (point) pnt) - (when (= (char-after) ch) - (setq cnt (1+ cnt))) - (forward-char)) - (setq cnt (- (* 2 (abs count)) (mod cnt 2))) - (cond - ((> dir 0) - (while (and (not (eolp)) (not (zerop cnt))) - (when (= (char-after) ch) (setq cnt (1- cnt))) - (forward-char)) - (when (not (zerop cnt)) (goto-char (point-max)))) - (t - (while (and (not (bolp)) (not (zerop cnt))) - (when (= (char-before) ch) (setq cnt (1- cnt))) - (forward-char -1)) - (when (not (zerop cnt)) (goto-char (point-min))))) - (/ cnt 2))) - -;;; Motion functions -(defun evil-forward-beginning (thing &optional count) - "Move forward to beginning of THING. -The motion is repeated COUNT times." - (setq count (or count 1)) - (if (< count 0) - (forward-thing thing count) - (let ((bnd (bounds-of-thing-at-point thing)) - rest) - (when (and bnd (< (point) (cdr bnd))) - (goto-char (cdr bnd))) - (condition-case nil - (when (zerop (setq rest (forward-thing thing count))) - (when (and (bounds-of-thing-at-point thing) - (not (bobp)) - ;; handle final empty line - (not (and (bolp) (eobp)))) - (forward-char -1)) - (beginning-of-thing thing)) - (error)) - rest))) - -(defun evil-backward-beginning (thing &optional count) - "Move backward to beginning of THING. -The motion is repeated COUNT times. This is the same as calling -`evil-backward-beginning' with -COUNT." - (evil-forward-beginning thing (- (or count 1)))) - -(defun evil-forward-end (thing &optional count) - "Move forward to end of THING. -The motion is repeated COUNT times." - (setq count (or count 1)) - (cond - ((> count 0) - (unless (eobp) (forward-char)) - (prog1 (forward-thing thing count) - (unless (bobp) (forward-char -1)))) - (t - (let ((bnd (bounds-of-thing-at-point thing)) - rest) - (when (and bnd (< (point) (cdr bnd) )) - (goto-char (car bnd))) - (condition-case nil - (when (zerop (setq rest (forward-thing thing count))) - (end-of-thing thing) - (forward-char -1)) - (error)) - rest)))) - -(defun evil-backward-end (thing &optional count) - "Move backward to end of THING. -The motion is repeated COUNT times. This is the same as calling -`evil-backward-end' with -COUNT." - (evil-forward-end thing (- (or count 1)))) - -(defun evil-forward-word (&optional count) - "Move by words. -Moves point COUNT words forward or (- COUNT) words backward if -COUNT is negative. This function is the same as `forward-word' -but returns the number of words by which point could *not* be -moved." - (setq count (or count 1)) - (let* ((dir (if (>= count 0) +1 -1)) - (count (abs count))) - (while (and (> count 0) - (forward-word dir)) - (setq count (1- count))) - count)) - -(defun evil-in-comment-p (&optional pos) - "Checks if POS is within a comment according to current syntax. -If POS is nil, (point) is used. The return value is the beginning -position of the comment." - (setq pos (or pos (point))) - (let ((chkpos - (cond - ((eobp) pos) - ((= (char-syntax (char-after)) ?<) (1+ pos)) - ((and (not (zerop (logand (car (syntax-after (point))) - (lsh 1 16)))) - (not (zerop (logand (or (car (syntax-after (1+ (point)))) 0) - (lsh 1 17))))) - (+ pos 2)) - ((and (not (zerop (logand (car (syntax-after (point))) - (lsh 1 17)))) - (not (zerop (logand (or (car (syntax-after (1- (point)))) 0) - (lsh 1 16))))) - (1+ pos)) - (t pos)))) - (let ((syn (save-excursion (syntax-ppss chkpos)))) - (and (nth 4 syn) (nth 8 syn))))) - -(defun evil-looking-at-start-comment (&optional move) - "Returns t if point is at the start of a comment. -point must be on one of the opening characters of a block comment -according to the current syntax table. Futhermore these -characters must been parsed as opening characters, i.e. they -won't be considered as comment starters inside a string or -possibly another comment. Point is moved to the first character -of the comment opener if MOVE is non-nil." - (cond - ;; one character opener - ((= (char-syntax (char-after)) ?<) - (equal (point) (evil-in-comment-p (1+ (point))))) - ;; two character opener on first char - ((and (not (zerop (logand (car (syntax-after (point))) - (lsh 1 16)))) - (not (zerop (logand (or (car (syntax-after (1+ (point)))) 0) - (lsh 1 17))))) - (equal (point) (evil-in-comment-p (+ 2 (point))))) - ;; two character opener on second char - ((and (not (zerop (logand (car (syntax-after (point))) - (lsh 1 17)))) - (not (zerop (logand (or (car (syntax-after (1- (point)))) 0) - (lsh 1 16))))) - (and (equal (1- (point)) (evil-in-comment-p (1+ (point)))) - (prog1 t (when move (backward-char))))))) - -(defun evil-looking-at-end-comment (&optional move) - "Returns t if point is at the end of a comment. -point must be on one of the opening characters of a block comment -according to the current syntax table. Futhermore these -characters must been parsed as opening characters, i.e. they -won't be considered as comment starters inside a string or -possibly another comment. Point is moved right after the comment -closer if MOVE is non-nil." - (cond - ;; one char closer - ((= (char-syntax (char-after)) ?>) - (and (evil-in-comment-p) ; in comment - (not (evil-in-comment-p (1+ (point)))) - (prog1 t (when move (forward-char))))) - ;; two char closer on first char - ((and (not (zerop (logand (car (syntax-after (point))) - (lsh 1 18)))) - (not (zerop (logand (or (car (syntax-after (1+ (point)))) 0) - (lsh 1 19))))) - (and (evil-in-comment-p) - (not (evil-in-comment-p (+ (point) 2))) - (prog1 t (when move (forward-char 2))))) - ;; two char closer on second char - ((and (not (zerop (logand (car (syntax-after (point))) - (lsh 1 19)))) - (not (zerop (logand (or (car (syntax-after (1- (point)))) 0) - (lsh 1 18))))) - (and (evil-in-comment-p) - (not (evil-in-comment-p (1+ (point)))) - (prog1 t (when move (forward-char))))))) - -(defun evil-insert-newline-above () - "Inserts a new line above point and places point in that line -with regard to indentation." - (evil-narrow-to-field - (evil-move-beginning-of-line) - (insert (if use-hard-newlines hard-newline "\n")) - (forward-line -1) - (back-to-indentation))) - -(defun evil-insert-newline-below () - "Inserts a new line below point and places point in that line -with regard to indentation." - (evil-narrow-to-field - (evil-move-end-of-line) - (insert (if use-hard-newlines hard-newline "\n")) - (back-to-indentation))) - -;;; Markers - -(defun evil-global-marker-p (char) - "Whether CHAR denotes a global marker." - (or (and (>= char ?A) (<= char ?Z)) - (assq char (default-value 'evil-markers-alist)))) - -(defun evil-set-marker (char &optional pos advance) - "Set the marker denoted by CHAR to position POS. -POS defaults to the current position of point. -If ADVANCE is t, the marker advances when inserting text at it; -otherwise, it stays behind." - (interactive (list (read-char))) - (catch 'done - (let ((marker (evil-get-marker char t)) alist) - (unless (markerp marker) - (cond - ((and marker (symbolp marker) (boundp marker)) - (set marker (or (symbol-value marker) (make-marker))) - (setq marker (symbol-value marker))) - ((eq marker 'evil-jump-backward-swap) - (evil-set-jump) - (throw 'done nil)) - ((functionp marker) - (user-error "Cannot set special marker `%c'" char)) - ((evil-global-marker-p char) - (setq alist (default-value 'evil-markers-alist) - marker (make-marker)) - (evil-add-to-alist 'alist char marker) - (setq-default evil-markers-alist alist)) - (t - (setq marker (make-marker)) - (evil-add-to-alist 'evil-markers-alist char marker)))) - (add-hook 'kill-buffer-hook #'evil-swap-out-markers nil t) - (set-marker-insertion-type marker advance) - (set-marker marker (or pos (point)))))) - -(defun evil-get-marker (char &optional raw) - "Return the marker denoted by CHAR. -This is either a marker object as returned by `make-marker', -a number, a cons cell (FILE . POS) with FILE being a string -and POS a number, or nil. If RAW is non-nil, then the -return value may also be a variable, a movement function, -or a marker object pointing nowhere." - (let ((marker (if (evil-global-marker-p char) - (cdr-safe (assq char (default-value - 'evil-markers-alist))) - (cdr-safe (assq char evil-markers-alist))))) - (save-excursion - (if raw - marker - (when (and (symbolp marker) (boundp marker)) - (setq marker (symbol-value marker))) - (when (functionp marker) - (funcall marker) - (setq marker (point))) - (when (markerp marker) - (if (eq (marker-buffer marker) (current-buffer)) - (setq marker (marker-position marker)) - (setq marker (and (marker-buffer marker) marker)))) - (when (or (numberp marker) - (markerp marker) - (and (consp marker) - (stringp (car marker)) - (numberp (cdr marker)))) - marker))))) - -(defun evil-swap-out-markers () - "Turn markers into file references when the buffer is killed." - (and buffer-file-name - (dolist (entry evil-markers-alist) - (and (markerp (cdr entry)) - (eq (marker-buffer (cdr entry)) (current-buffer)) - (setcdr entry (cons buffer-file-name - (marker-position (cdr entry)))))))) -(put 'evil-swap-out-markers 'permanent-local-hook t) - -(defun evil-get-register (register &optional noerror) - "Return contents of REGISTER. -Signal an error if empty, unless NOERROR is non-nil. - -The following special registers are supported. - \" the unnamed register - * the clipboard contents - + the clipboard contents - <C-w> the word at point (ex mode only) - <C-a> the WORD at point (ex mode only) - <C-o> the symbol at point (ex mode only) - <C-f> the current file at point (ex mode only) - % the current file name (read only) - # the alternate file name (read only) - / the last search pattern (read only) - : the last command line (read only) - . the last inserted text (read only) - - the last small (less than a line) delete - _ the black hole register - = the expression register (read only)" - (condition-case err - (when (characterp register) - (or (cond - ((eq register ?\") - (current-kill 0)) - ((and (<= ?1 register) (<= register ?9)) - (let ((reg (- register ?1))) - (and (< reg (length kill-ring)) - (current-kill reg t)))) - ((memq register '(?* ?+)) - ;; the following code is modified from - ;; `x-selection-value-internal' - (let ((what (if (eq register ?*) 'PRIMARY 'CLIPBOARD)) - (request-type (or (and (boundp 'x-select-request-type) - x-select-request-type) - '(UTF8_STRING COMPOUNT_TEXT STRING))) - text) - (unless (consp request-type) - (setq request-type (list request-type))) - (while (and request-type (not text)) - (condition-case nil - (setq text (evil-get-selection what (pop request-type))) - (error nil))) - (when text - (remove-text-properties 0 (length text) '(foreign-selection nil) text)) - text)) - ((eq register ?\C-W) - (unless (evil-ex-p) - (user-error "Register <C-w> only available in ex state")) - (with-current-buffer evil-ex-current-buffer - (thing-at-point 'evil-word))) - ((eq register ?\C-A) - (unless (evil-ex-p) - (user-error "Register <C-a> only available in ex state")) - (with-current-buffer evil-ex-current-buffer - (thing-at-point 'evil-WORD))) - ((eq register ?\C-O) - (unless (evil-ex-p) - (user-error "Register <C-o> only available in ex state")) - (with-current-buffer evil-ex-current-buffer - (thing-at-point 'evil-symbol))) - ((eq register ?\C-F) - (unless (evil-ex-p) - (user-error "Register <C-f> only available in ex state")) - (with-current-buffer evil-ex-current-buffer - (thing-at-point 'filename))) - ((eq register ?%) - (or (buffer-file-name (and (evil-ex-p) - (minibufferp) - evil-ex-current-buffer)) - (user-error "No file name"))) - ((= register ?#) - (or (with-current-buffer (other-buffer) (buffer-file-name)) - (user-error "No file name"))) - ((eq register ?/) - (or (car-safe - (or (and (boundp 'evil-search-module) - (eq evil-search-module 'evil-search) - evil-ex-search-history) - (and isearch-regexp regexp-search-ring) - search-ring)) - (user-error "No previous regular expression"))) - ((eq register ?:) - (or (car-safe evil-ex-history) - (user-error "No previous command line"))) - ((eq register ?.) - evil-last-insertion) - ((eq register ?-) - evil-last-small-deletion) - ((eq register ?=) - (let* ((enable-recursive-minibuffers t) - (result (eval (car (read-from-string (read-string "=")))))) - (cond - ((or (stringp result) - (numberp result) - (symbolp result)) - (prin1-to-string result)) - ((sequencep result) - (mapconcat #'prin1-to-string result "\n")) - (t (user-error "Using %s as a string" (type-of result)))))) - ((eq register ?_) ; the black hole register - "") - (t - (setq register (downcase register)) - (get-register register))) - (user-error "Register `%c' is empty" register))) - (error (unless err (signal (car err) (cdr err)))))) - -(defun evil-set-register (register text) - "Set the contents of register REGISTER to TEXT. -If REGISTER is an upcase character then text is appended to that -register instead of replacing its content." - (cond - ((not (characterp register)) - (user-error "Invalid register")) - ;; don't allow modification of read-only registers - ((member register '(?: ?. ?%)) - (user-error "Can't modify read-only register")) - ((eq register ?\") - (kill-new text)) - ((and (<= ?1 register) (<= register ?9)) - (if (null kill-ring) - (kill-new text) - (let ((kill-ring-yank-pointer kill-ring-yank-pointer) - interprogram-paste-function - interprogram-cut-function) - (current-kill (- register ?1)) - (setcar kill-ring-yank-pointer text)))) - ((eq register ?*) - (evil-set-selection 'PRIMARY text)) - ((eq register ?+) - (evil-set-selection 'CLIPBOARD text)) - ((eq register ?-) - (setq evil-last-small-deletion text)) - ((eq register ?_) ; the black hole register - nil) - ((and (<= ?A register) (<= register ?Z)) - (setq register (downcase register)) - (let ((content (get-register register))) - (cond - ((not content) - (set-register register text)) - ((or (text-property-not-all 0 (length content) - 'yank-handler nil - content) - (text-property-not-all 0 (length text) - 'yank-handler nil - text)) - ;; some non-trivial yank-handler -> always switch to line handler - ;; ensure complete lines - (when (and (> (length content) 0) - (/= (aref content (1- (length content))) ?\n)) - (setq content (concat content "\n"))) - (when (and (> (length text) 0) - (/= (aref text (1- (length text))) ?\n)) - (setq text (concat text "\n"))) - (setq text (concat content text)) - (remove-list-of-text-properties 0 (length text) '(yank-handler) text) - (setq text (propertize text 'yank-handler '(evil-yank-line-handler))) - (set-register register text)) - (t - (set-register register (concat content text)))))) - (t - (set-register register text)))) - -(defun evil-register-list () - "Returns an alist of all registers" - (sort (append (mapcar #'(lambda (reg) - (cons reg (evil-get-register reg t))) - '(?\" ?* ?+ ?% ?# ?/ ?: ?. ?- - ?1 ?2 ?3 ?4 ?5 ?6 ?7 ?8 ?9)) - register-alist nil) - #'(lambda (reg1 reg2) (< (car reg1) (car reg2))))) - -(defsubst evil-kbd-macro-suppress-motion-error () - "Returns non-nil if a motion error should be suppressed. -Whether the motion error should be suppressed depends on the -variable `evil-kbd-macro-suppress-motion-error'." - (or (and defining-kbd-macro - (memq evil-kbd-macro-suppress-motion-error '(t record))) - (and executing-kbd-macro - (memq evil-kbd-macro-suppress-motion-error '(t replay))))) - -;;; Region - -;; `set-mark' does too much at once -(defun evil-move-mark (pos) - "Set buffer's mark to POS. -If POS is nil, delete the mark." - (when pos - (setq pos (evil-normalize-position pos))) - (set-marker (mark-marker) pos)) - -(defun evil-save-transient-mark-mode () - "Save Transient Mark mode and make it buffer-local. -Any changes to Transient Mark mode are now local to the current -buffer, until `evil-restore-transient-mark-mode' is called. - -Variables pertaining to Transient Mark mode are listed in -`evil-transient-vars', and their values are stored in -`evil-transient-vals'." - (dolist (var evil-transient-vars) - (when (and (boundp var) - (not (assq var evil-transient-vals))) - (push (list var (symbol-value var) - (local-variable-p var)) - evil-transient-vals) - (make-variable-buffer-local var) - (put var 'permanent-local t)))) - -(defun evil-restore-transient-mark-mode () - "Restore Transient Mark mode. -This presupposes that `evil-save-transient-mark-mode' has been -called earlier. If Transient Mark mode was disabled before but -enabled in the meantime, this function disables it; if it was -enabled before but disabled in the meantime, this function -enables it. - -The earlier settings of Transient Mark mode are stored in -`evil-transient-vals'." - (let (entry local var val) - (while (setq entry (pop evil-transient-vals)) - (setq var (pop entry) - val (pop entry) - local (pop entry)) - (unless local - (kill-local-variable var)) - (unless (equal (symbol-value var) val) - (if (fboundp var) - (funcall var (if val 1 -1)) - (setq var val)))))) - -(defun evil-save-mark () - "Save the current mark, including whether it is transient. -See also `evil-restore-mark'." - (unless evil-visual-previous-mark - (setq evil-visual-previous-mark (mark t)) - (evil-save-transient-mark-mode))) - -(defun evil-restore-mark () - "Restore the mark, including whether it was transient. -See also `evil-save-mark'." - (when evil-visual-previous-mark - (evil-restore-transient-mark-mode) - (evil-move-mark evil-visual-previous-mark) - (setq evil-visual-previous-mark nil))) - -;; In theory, an active region implies Transient Mark mode, and -;; disabling Transient Mark mode implies deactivating the region. -;; In practice, Emacs never clears `mark-active' except in Transient -;; Mark mode, so we define our own toggle functions to make things -;; more predictable. -(defun evil-transient-mark (&optional arg) - "Toggle Transient Mark mode. -Ensure that the region is properly deactivated. -Enable with positive ARG, disable with negative ARG." - (unless (numberp arg) - (setq arg (if transient-mark-mode -1 1))) - (cond - ((< arg 1) - (evil-active-region -1) - ;; Transient Mark mode cannot be disabled - ;; while CUA mode is enabled - (when (fboundp 'cua-mode) - (cua-mode -1)) - (when transient-mark-mode - (transient-mark-mode -1))) - (t - (unless transient-mark-mode - (evil-active-region -1) - (transient-mark-mode 1))))) - -(defun evil-active-region (&optional arg) - "Toggle active region. -Ensure that Transient Mark mode is properly enabled. -Enable with positive ARG, disable with negative ARG." - (unless (numberp arg) - (setq arg (if (region-active-p) -1 1))) - (cond - ((and (< arg 1)) - (when (or transient-mark-mode mark-active) - (setq mark-active nil - deactivate-mark nil) - (when (boundp 'cua--explicit-region-start) - (setq cua--explicit-region-start nil)) - (run-hooks 'deactivate-mark-hook))) - (t - (evil-transient-mark 1) - (when deactivate-mark - (setq deactivate-mark nil)) - (unless (mark t) - (evil-move-mark (point))) - (unless (region-active-p) - (set-mark (mark t))) - (when (boundp 'cua--explicit-region-start) - (setq cua--explicit-region-start t))))) - -(defmacro evil-with-transient-mark-mode (&rest body) - "Execute BODY with Transient Mark mode. -Then restore Transient Mark mode to its previous setting." - (declare (indent defun) - (debug t)) - `(let ((inhibit-quit t) - evil-transient-vals) - (unwind-protect - (progn - (evil-save-transient-mark-mode) - (evil-transient-mark 1) - ,@body) - (evil-restore-transient-mark-mode)))) - -(defmacro evil-with-active-region (beg end &rest body) - "Execute BODY with an active region from BEG to END." - (declare (indent 2) - (debug t)) - `(let ((beg ,beg) (end ,end) - evil-transient-vals) - (evil-with-transient-mark-mode - (save-excursion - (evil-active-region 1) - (evil-move-mark beg) - (goto-char end) - ,@body)))) - -(defun evil-exchange-point-and-mark () - "Exchange point and mark without activating the region." - (let* ((point (point)) - (mark (or (mark t) point))) - (set-marker (mark-marker) point) - (goto-char mark))) - -(defun evil-apply-on-block (func beg end pass-columns &rest args) - "Call FUNC for each line of a block selection. -The selection is specified by the region BEG and END. FUNC must -take at least two arguments, the beginning and end of each -line. If PASS-COLUMNS is non-nil, these values are the columns, -otherwise tey are buffer positions. Extra arguments to FUNC may -be passed via ARGS." - (let ((eol-col (and (memq last-command '(next-line previous-line)) - (numberp temporary-goal-column) - temporary-goal-column)) - startcol startpt endcol endpt) - (save-excursion - (goto-char beg) - (setq startcol (current-column)) - (beginning-of-line) - (setq startpt (point)) - (goto-char end) - (setq endcol (current-column)) - (forward-line 1) - (setq endpt (point-marker)) - ;; ensure the start column is the left one. - (evil-sort startcol endcol) - ;; maybe find maximal column - (when eol-col - (setq eol-col 0) - (goto-char startpt) - (while (< (point) endpt) - (setq eol-col (max eol-col - (evil-column (line-end-position)))) - (forward-line 1)) - (setq endcol (max endcol - (min eol-col - (1+ (min (1- most-positive-fixnum) - (truncate temporary-goal-column))))))) - ;; start looping over lines - (goto-char startpt) - (while (< (point) endpt) - (if pass-columns - (apply func startcol endcol args) - (apply func - (save-excursion (evil-move-to-column startcol)) - (save-excursion (evil-move-to-column endcol t)) - args)) - (forward-line 1))))) - -(defun evil-apply-on-rectangle (function start end &rest args) - "Like `apply-on-rectangle' but maybe extends to eol. -If `temporary-goal-column' is set to a big number, then the -region of each line is extended to the end of each line. The end -column is set to the maximal column in all covered lines." - (apply #'evil-apply-on-block function start end t args)) - -;;; Insertion - -(defun evil-concat-ranges (ranges) - "Concatenate RANGES. -RANGES must be a list of ranges. They must be ordered so that -successive ranges share their boundaries. The return value is a -single range of disjoint union of the ranges or nil if the -disjoint union is not a single range." - (let ((range (car-safe ranges)) (ranges (cdr ranges)) r) - (while (and range (setq r (car-safe ranges))) - (setq range - (cond ((and (= (cdr r) (car range))) (cons (car r) (cdr range))) - ((and (= (cdr range) (car r))) (cons (car range) (cdr r))))) - (setq ranges (cdr ranges))) - range)) - -(defun evil-track-last-insertion (beg end len) - "Track the last insertion range and its text. -The insertion range is stored as a pair of buffer positions in -`evil-current-insertion'. If a subsequent change is compatible, -then the current range is modified, otherwise it is replaced by a -new range. Compatible changes are changes that do not create a -disjoin range." - ;; deletion - (when (> len 0) - (if (and evil-current-insertion - (>= beg (car evil-current-insertion)) - (<= (+ beg len) (cdr evil-current-insertion))) - (setcdr evil-current-insertion - (- (cdr evil-current-insertion) len)) - (setq evil-current-insertion nil))) - ;; insertion - (if (and evil-current-insertion - (>= beg (car evil-current-insertion)) - (<= beg (cdr evil-current-insertion))) - (setcdr evil-current-insertion - (+ (- end beg) - (cdr evil-current-insertion))) - (setq evil-current-insertion (cons beg end)))) -(put 'evil-track-last-insertion 'permanent-local-hook t) - -(defun evil-start-track-last-insertion () - "Start tracking the last insertion." - (setq evil-current-insertion nil) - (add-hook 'after-change-functions #'evil-track-last-insertion nil t)) - -(defun evil-stop-track-last-insertion () - "Stop tracking the last insertion. -The tracked insertion is set to `evil-last-insertion'." - (setq evil-last-insertion - (and evil-current-insertion - ;; Check whether the insertion range is a valid buffer - ;; range. If a buffer modification is done from within - ;; another change hook or modification-hook (yasnippet - ;; does this using overlay modification-hooks), then the - ;; insertion information may be invalid. There is no way - ;; to detect this situation, but at least we should - ;; ensure that no error occurs (see bug #272). - (>= (car evil-current-insertion) (point-min)) - (<= (cdr evil-current-insertion) (point-max)) - (buffer-substring-no-properties (car evil-current-insertion) - (cdr evil-current-insertion)))) - (remove-hook 'after-change-functions #'evil-track-last-insertion t)) - -;;; Paste - -(defun evil-yank-characters (beg end &optional register yank-handler) - "Saves the characters defined by the region BEG and END in the kill-ring." - (let ((text (filter-buffer-substring beg end))) - (when yank-handler - (setq text (propertize text 'yank-handler (list yank-handler)))) - (when register - (evil-set-register register text)) - (when evil-was-yanked-without-register - (evil-set-register ?0 text)) ; "0 register contains last yanked text - (unless (eq register ?_) - (kill-new text)))) - -(defun evil-yank-lines (beg end &optional register yank-handler) - "Saves the lines in the region BEG and END into the kill-ring." - (let* ((text (filter-buffer-substring beg end)) - (yank-handler (list (or yank-handler - #'evil-yank-line-handler) - nil - t))) - ;; Ensure the text ends with a newline. This is required - ;; if the deleted lines were the last lines in the buffer. - (when (or (zerop (length text)) - (/= (aref text (1- (length text))) ?\n)) - (setq text (concat text "\n"))) - (setq text (propertize text 'yank-handler yank-handler)) - (when register - (evil-set-register register text)) - (when evil-was-yanked-without-register - (evil-set-register ?0 text)) ; "0 register contains last yanked text - (unless (eq register ?_) - (kill-new text)))) - -(defun evil-yank-rectangle (beg end &optional register yank-handler) - "Saves the rectangle defined by region BEG and END into the kill-ring." - (let ((lines (list nil))) - (evil-apply-on-rectangle #'extract-rectangle-line beg end lines) - ;; We remove spaces from the beginning and the end of the next. - ;; Spaces are inserted explicitly in the yank-handler in order to - ;; NOT insert lines full of spaces. - (setq lines (nreverse (cdr lines))) - ;; `text' is used as default insert text when pasting this rectangle - ;; in another program, e.g., using the X clipboard. - (let* ((yank-handler (list (or yank-handler - #'evil-yank-block-handler) - lines - t - 'evil-delete-yanked-rectangle)) - (text (propertize (mapconcat #'identity lines "\n") - 'yank-handler yank-handler))) - (when register - (evil-set-register register text)) - (when evil-was-yanked-without-register - (evil-set-register ?0 text)) ; "0 register contains last yanked text - (unless (eq register ?_) - (kill-new text))))) - -(defun evil-remove-yank-excluded-properties (text) - "Removes `yank-excluded-properties' from TEXT." - (if (eq yank-excluded-properties t) - (set-text-properties 0 (length text) nil text) - (remove-list-of-text-properties 0 (length text) - yank-excluded-properties text))) - -(defun evil-yank-line-handler (text) - "Inserts the current text linewise." - (let ((text (apply #'concat (make-list (or evil-paste-count 1) text))) - (opoint (point))) - (evil-remove-yank-excluded-properties text) - (cond - ((eq this-command 'evil-paste-before) - (evil-move-beginning-of-line) - (evil-move-mark (point)) - (insert text) - (setq evil-last-paste - (list 'evil-paste-before - evil-paste-count - opoint - (mark t) - (point))) - (evil-set-marker ?\[ (mark)) - (evil-set-marker ?\] (1- (point))) - (evil-exchange-point-and-mark) - (back-to-indentation)) - ((eq this-command 'evil-paste-after) - (evil-move-end-of-line) - (evil-move-mark (point)) - (insert "\n") - (insert text) - (evil-set-marker ?\[ (1+ (mark))) - (evil-set-marker ?\] (1- (point))) - (delete-char -1) ; delete the last newline - (setq evil-last-paste - (list 'evil-paste-after - evil-paste-count - opoint - (mark t) - (point))) - (evil-move-mark (1+ (mark t))) - (evil-exchange-point-and-mark) - (back-to-indentation)) - (t - (insert text))))) - -(defun evil-yank-block-handler (lines) - "Inserts the current text as block." - (let ((count (or evil-paste-count 1)) - (col (if (eq this-command 'evil-paste-after) - (1+ (current-column)) - (current-column))) - (current-line (line-number-at-pos (point))) - (opoint (point)) - epoint) - (dolist (line lines) - ;; concat multiple copies according to count - (setq line (apply #'concat (make-list count line))) - ;; strip whitespaces at beginning and end - (string-match "^ *\\(.*?\\) *$" line) - (let ((text (match-string 1 line)) - (begextra (match-beginning 1)) - (endextra (- (match-end 0) (match-end 1)))) - ;; maybe we have to insert a new line at eob - (while (< (line-number-at-pos (point)) - current-line) - (goto-char (point-max)) - (insert "\n")) - (setq current-line (1+ current-line)) - ;; insert text unless we insert an empty line behind eol - (unless (and (< (evil-column (line-end-position)) col) - (zerop (length text))) - ;; if we paste behind eol, it may be sufficient to insert tabs - (if (< (evil-column (line-end-position)) col) - (move-to-column (+ col begextra) t) - (move-to-column col t) - (insert (make-string begextra ?\s))) - (evil-remove-yank-excluded-properties text) - (insert text) - (unless (eolp) - ;; text follows, so we have to insert spaces - (insert (make-string endextra ?\s))) - (setq epoint (point))) - (forward-line 1))) - (setq evil-last-paste - (list this-command - evil-paste-count - opoint - (length lines) ; number of rows - (* count (length (car lines))))) ; number of colums - (evil-set-marker ?\[ opoint) - (evil-set-marker ?\] (1- epoint)) - (goto-char opoint) - (when (and (eq this-command 'evil-paste-after) - (not (eolp))) - (forward-char)))) - -(defun evil-delete-yanked-rectangle (nrows ncols) - "Special function to delete the block yanked by a previous paste command." - (let ((opoint (point)) - (col (if (eq last-command 'evil-paste-after) - (1+ (current-column)) - (current-column)))) - (dotimes (i nrows) - (delete-region (save-excursion - (move-to-column col) - (point)) - (save-excursion - (move-to-column (+ col ncols)) - (point))) - (unless (eobp) (forward-line))) - (goto-char opoint))) - -;; TODO: if undoing is disabled in the current buffer, paste-pop won't -;; work. Although this is probably not a big problem, because usually -;; buffers where `evil-paste-pop' may be useful have undoing enabled. -;; A solution would be to temporarily enable undo when pasting and -;; store the undo information in a special variable that does not -;; interfere with `buffer-undo-list'. -(defun evil-paste-pop (count) - "Replace the just-yanked stretch of killed text with a different stretch. -This command is allowed only immediatly after a `yank', -`evil-paste-before', `evil-paste-after' or `evil-paste-pop'. -This command uses the same paste command as before, i.e., when -used after `evil-paste-after' the new text is also yanked using -`evil-paste-after', used with the same paste-count argument. - -The COUNT argument inserts the COUNTth previous kill. If COUNT -is negative this is a more recent kill." - (interactive "p") - (unless (memq last-command - '(evil-paste-after - evil-paste-before - evil-visual-paste)) - (user-error "Previous command was not an evil-paste: %s" last-command)) - (unless evil-last-paste - (user-error "Previous paste command used a register")) - (evil-undo-pop) - (goto-char (nth 2 evil-last-paste)) - (setq this-command (nth 0 evil-last-paste)) - ;; use temporary kill-ring, so the paste cannot modify it - (let ((kill-ring (list (current-kill - (if (and (> count 0) (nth 5 evil-last-paste)) - ;; if was visual paste then skip the - ;; text that has been replaced - (1+ count) - count)))) - (kill-ring-yank-pointer kill-ring)) - (when (eq last-command 'evil-visual-paste) - (let ((evil-no-display t)) - (evil-visual-restore))) - (funcall (nth 0 evil-last-paste) (nth 1 evil-last-paste)) - ;; if this was a visual paste, then mark the last paste as NOT - ;; being the first visual paste - (when (eq last-command 'evil-visual-paste) - (setcdr (nthcdr 4 evil-last-paste) nil)))) - -(defun evil-paste-pop-next (count) - "Same as `evil-paste-pop' but with negative argument." - (interactive "p") - (evil-paste-pop (- count))) - -;;; Interactive forms - -(defun evil-match-interactive-code (interactive &optional pos) - "Match an interactive code at position POS in string INTERACTIVE. -Returns the first matching entry in `evil-interactive-alist', or nil." - (let ((length (length interactive)) - (pos (or pos 0))) - (catch 'done - (dolist (entry evil-interactive-alist) - (let* ((string (car entry)) - (end (+ (length string) pos))) - (when (and (<= end length) - (string= string - (substring interactive pos end))) - (throw 'done entry))))))) - -(defun evil-concatenate-interactive-forms (&rest forms) - "Concatenate interactive list expressions FORMS. -Returns a single expression where successive expressions -are joined, if possible." - (let (result) - (when forms - (while (cdr forms) - (cond - ((null (car forms)) - (pop forms)) - ((and (eq (car (car forms)) 'list) - (eq (car (cadr forms)) 'list)) - (setq forms (cons (append (car forms) - (cdr (cadr forms))) - (cdr (cdr forms))))) - (t - (push (pop forms) result)))) - (when (car forms) - (push (pop forms) result)) - (setq result (nreverse result)) - (cond - ((null result)) - ((null (cdr result)) - (car result)) - (t - `(append ,@result)))))) - -(defun evil-interactive-string (string) - "Evaluate the interactive string STRING. -The string may contain extended interactive syntax. -The return value is a cons cell (FORM . PROPERTIES), -where FORM is a single list-expression to be passed to -a standard `interactive' statement, and PROPERTIES is a -list of command properties as passed to `evil-define-command'." - (let ((length (length string)) - (pos 0) - code expr forms match plist prompt properties) - (while (< pos length) - (if (eq (aref string pos) ?\n) - (setq pos (1+ pos)) - (setq match (evil-match-interactive-code string pos)) - (if (null match) - (user-error "Unknown interactive code: `%s'" - (substring string pos)) - (setq code (car match) - expr (car (cdr match)) - plist (cdr (cdr match)) - pos (+ pos (length code))) - (when (functionp expr) - (setq prompt - (substring string pos - (or (string-match "\n" string pos) - length)) - pos (+ pos (length prompt)) - expr `(funcall ,expr ,prompt))) - (setq forms (append forms (list expr)) - properties (append properties plist))))) - (cons `(append ,@forms) properties))) - -(defun evil-interactive-form (&rest args) - "Evaluate interactive forms ARGS. -The return value is a cons cell (FORM . PROPERTIES), -where FORM is a single list-expression to be passed to -a standard `interactive' statement, and PROPERTIES is a -list of command properties as passed to `evil-define-command'." - (let (forms properties) - (dolist (arg args) - (if (not (stringp arg)) - (setq forms (append forms (list arg))) - (setq arg (evil-interactive-string arg) - forms (append forms (cdr (car arg))) - properties (append properties (cdr arg))))) - (cons (apply #'evil-concatenate-interactive-forms forms) - properties))) - -;;; Types - -(defun evil-type (object &optional default) - "Return the type of OBJECT, or DEFAULT if none." - (let (type) - (cond - ((overlayp object) - (setq type (overlay-get object :type))) - ((evil-range-p object) - (setq type (nth 2 object))) - ((listp object) - (setq type (plist-get object :type))) - ((commandp object) - (setq type (evil-get-command-property object :type))) - ((symbolp object) - (setq type (get object 'type)))) - (setq type (or type default)) - (and (evil-type-p type) type))) - -(defun evil-set-type (object type) - "Set the type of OBJECT to TYPE. -For example, (evil-set-type 'next-line 'line) -will make `line' the type of the `next-line' command." - (cond - ((overlayp object) - (overlay-put object :type type)) - ((evil-range-p object) - (evil-set-range-type object type)) - ((listp object) - (plist-put object :type type)) - ((commandp object) - (evil-set-command-property object :type type)) - ((symbolp object) - (put object 'type type))) - object) - -(defun evil-type-property (type prop) - "Return property PROP for TYPE." - (evil-get-property evil-type-properties type prop)) - -(defun evil-type-p (sym) - "Whether SYM is the name of a type." - (assq sym evil-type-properties)) - -(defun evil-expand (beg end type &rest properties) - "Expand BEG and END as TYPE with PROPERTIES. -Returns a list (BEG END TYPE PROPERTIES ...), where the tail -may contain a property list." - (apply #'evil-transform - ;; don't expand if already expanded - (unless (plist-get properties :expanded) :expand) - beg end type properties)) - -(defun evil-contract (beg end type &rest properties) - "Contract BEG and END as TYPE with PROPERTIES. -Returns a list (BEG END TYPE PROPERTIES ...), where the tail -may contain a property list." - (apply #'evil-transform :contract beg end type properties)) - -(defun evil-normalize (beg end type &rest properties) - "Normalize BEG and END as TYPE with PROPERTIES. -Returns a list (BEG END TYPE PROPERTIES ...), where the tail -may contain a property list." - (apply #'evil-transform :normalize beg end type properties)) - -(defun evil-transform (transform beg end type &rest properties) - "Apply TRANSFORM on BEG and END with PROPERTIES. -Returns a list (BEG END TYPE PROPERTIES ...), where the tail -may contain a property list. If TRANSFORM is undefined, -return positions unchanged." - (let* ((type (or type (evil-type properties))) - (transform (when (and type transform) - (evil-type-property type transform)))) - (if transform - (apply transform beg end properties) - (apply #'evil-range beg end type properties)))) - -(defun evil-describe (beg end type &rest properties) - "Return description of BEG and END with PROPERTIES. -If no description is available, return the empty string." - (let* ((type (or type (evil-type properties))) - (properties (plist-put properties :type type)) - (describe (evil-type-property type :string))) - (or (when describe - (apply describe beg end properties)) - ""))) - -;;; Ranges - -(defun evil-range (beg end &optional type &rest properties) - "Return a list (BEG END [TYPE] PROPERTIES...). -BEG and END are buffer positions (numbers or markers), -TYPE is a type as per `evil-type-p', and PROPERTIES is -a property list." - (let ((beg (evil-normalize-position beg)) - (end (evil-normalize-position end))) - (when (and (numberp beg) (numberp end)) - (append (list (min beg end) (max beg end)) - (when (evil-type-p type) - (list type)) - properties)))) - -(defun evil-range-p (object) - "Whether OBJECT is a range." - (and (listp object) - (>= (length object) 2) - (numberp (nth 0 object)) - (numberp (nth 1 object)))) - -(defun evil-range-beginning (range) - "Return beginning of RANGE." - (when (evil-range-p range) - (let ((beg (evil-normalize-position (nth 0 range))) - (end (evil-normalize-position (nth 1 range)))) - (min beg end)))) - -(defun evil-range-end (range) - "Return end of RANGE." - (when (evil-range-p range) - (let ((beg (evil-normalize-position (nth 0 range))) - (end (evil-normalize-position (nth 1 range)))) - (max beg end)))) - -(defun evil-range-properties (range) - "Return properties of RANGE." - (when (evil-range-p range) - (if (evil-type range) - (nthcdr 3 range) - (nthcdr 2 range)))) - -(defun evil-copy-range (range) - "Return a copy of RANGE." - (copy-sequence range)) - -(defun evil-set-range (range &optional beg end type &rest properties) - "Set RANGE to have beginning BEG and end END. -The TYPE and additional PROPERTIES may also be specified. -If an argument is nil, it's not used; the previous value is retained. -See also `evil-set-range-beginning', `evil-set-range-end', -`evil-set-range-type' and `evil-set-range-properties'." - (when (evil-range-p range) - (let ((beg (or (evil-normalize-position beg) - (evil-range-beginning range))) - (end (or (evil-normalize-position end) - (evil-range-end range))) - (type (or type (evil-type range))) - (plist (evil-range-properties range))) - (evil-sort beg end) - (setq plist (evil-concat-plists plist properties)) - (evil-set-range-beginning range beg) - (evil-set-range-end range end) - (evil-set-range-type range type) - (evil-set-range-properties range plist) - range))) - -(defun evil-set-range-beginning (range beg &optional copy) - "Set RANGE's beginning to BEG. -If COPY is non-nil, return a copy of RANGE." - (when copy - (setq range (evil-copy-range range))) - (setcar range beg) - range) - -(defun evil-set-range-end (range end &optional copy) - "Set RANGE's end to END. -If COPY is non-nil, return a copy of RANGE." - (when copy - (setq range (evil-copy-range range))) - (setcar (cdr range) end) - range) - -(defun evil-set-range-type (range type &optional copy) - "Set RANGE's type to TYPE. -If COPY is non-nil, return a copy of RANGE." - (when copy - (setq range (evil-copy-range range))) - (if type - (setcdr (cdr range) - (cons type (evil-range-properties range))) - (setcdr (cdr range) (evil-range-properties range))) - range) - -(defun evil-set-range-properties (range properties &optional copy) - "Set RANGE's properties to PROPERTIES. -If COPY is non-nil, return a copy of RANGE." - (when copy - (setq range (evil-copy-range range))) - (if (evil-type range) - (setcdr (cdr (cdr range)) properties) - (setcdr (cdr range) properties)) - range) - -(defun evil-range-union (range1 range2 &optional type) - "Return the union of the ranges RANGE1 and RANGE2. -If the ranges have conflicting types, use RANGE1's type. -This can be overridden with TYPE." - (when (and (evil-range-p range1) - (evil-range-p range2)) - (evil-range (min (evil-range-beginning range1) - (evil-range-beginning range2)) - (max (evil-range-end range1) - (evil-range-end range2)) - (or type - (evil-type range1) - (evil-type range2))))) - -(defun evil-subrange-p (range1 range2) - "Whether RANGE1 is contained within RANGE2." - (and (evil-range-p range1) - (evil-range-p range2) - (<= (evil-range-beginning range2) - (evil-range-beginning range1)) - (>= (evil-range-end range2) - (evil-range-end range1)))) - -(defun evil-select-inner-object (thing beg end type &optional count line) - "Return an inner text object range of COUNT objects. -If COUNT is positive, return objects following point; if COUNT is -negative, return objects preceding point. If one is unspecified, -the other is used with a negative argument. THING is a symbol -understood by thing-at-point. BEG, END and TYPE specify the -current selection. If LINE is non-nil, the text object should be -linewise, otherwise it is character wise." - (let* ((count (or count 1)) - (bnd (or (let ((b (bounds-of-thing-at-point thing))) - (and b (< (point) (cdr b)) b)) - (evil-bounds-of-not-thing-at-point thing)))) - ;; check if current object is selected - (when (or (not beg) (not end) - (> beg (car bnd)) - (< end (cdr bnd)) - (and (eq type 'inclusive) - (= (1+ beg) end))) ; empty region does not count - (when (or (not beg) (< (car bnd) beg)) (setq beg (car bnd))) - (when (or (not end) (> (cdr bnd) end)) (setq end (cdr bnd))) - (setq count (if (> count 0) (1- count) (1+ count)))) - (goto-char (if (< count 0) beg end)) - (evil-forward-nearest count - #'(lambda (cnt) (forward-thing thing cnt)) - #'(lambda (cnt) (evil-forward-not-thing thing cnt))) - (evil-range (if (>= count 0) beg (point)) - (if (< count 0) end (point)) - (if line 'line type) - :expanded t))) - -(defun evil-select-an-object (thing beg end type count &optional line) - "Return an outer text object range of COUNT objects. -If COUNT is positive, return objects following point; if COUNT is -negative, return objects preceding point. If one is unspecified, -the other is used with a negative argument. THING is a symbol -understood by thing-at-point. BEG, END and TYPE specify the -current selection. If LINE is non-nil, the text object should be -linewise, otherwise it is character wise." - (let* ((dir (if (> (or count 1) 0) +1 -1)) - (count (abs (or count 1))) - (objbnd (let ((b (bounds-of-thing-at-point thing))) - (and b (< (point) (cdr b)) b))) - (bnd (or objbnd (evil-bounds-of-not-thing-at-point thing))) - addcurrent other) - ;; check if current object is not selected - (when (or (not beg) (not end) - (> beg (car bnd)) - (< end (cdr bnd)) - (and (eq type 'inclusive) - (= (1+ beg) end))) ; empty region does not count - ;; if not, enlarge selection - (when (or (not beg) (< (car bnd) beg)) (setq beg (car bnd))) - (when (or (not end) (> (cdr bnd) end)) (setq end (cdr bnd))) - (if objbnd (setq addcurrent t))) - ;; make other and (point) reflect the selection - (cond - ((> dir 0) (goto-char end) (setq other beg)) - (t (goto-char beg) (setq other end))) - (cond - ;; do nothing more than only current is selected - ((not (and (= beg (car bnd)) (= end (cdr bnd))))) - ;; current match is thing, add whitespace - (objbnd - (let ((wsend (evil-with-restriction - ;; restrict to current line if we do non-line selection - (and (not line) (line-beginning-position)) - (and (not line) (line-end-position)) - (evil-bounds-of-not-thing-at-point thing dir)))) - (cond - (wsend - ;; add whitespace at end - (goto-char wsend) - (setq addcurrent t)) - (t - ;; no whitespace at end, try beginning - (save-excursion - (goto-char other) - (setq wsend - (evil-with-restriction - ;; restrict to current line if we do non-line selection - (and (not line) (line-beginning-position)) - (and (not line) (line-end-position)) - (evil-bounds-of-not-thing-at-point thing (- dir)))) - (when wsend (setq other wsend addcurrent t))))))) - ;; current match is whitespace, add thing - (t - (forward-thing thing dir) - (setq addcurrent t))) - ;; possibly count current object as selection - (if addcurrent (setq count (1- count))) - ;; move - (dotimes (var count) - (let ((wsend (evil-bounds-of-not-thing-at-point thing dir))) - (if (and wsend (/= wsend (point))) - ;; start with whitespace - (forward-thing thing dir) - ;; start with thing - (forward-thing thing dir) - (setq wsend (evil-bounds-of-not-thing-at-point thing dir)) - (when wsend (goto-char wsend))))) - ;; return range - (evil-range (if (> dir 0) other (point)) - (if (< dir 0) other (point)) - (if line 'line type) - :expanded t))) - -(defun evil--get-block-range (op cl selection-type) - "Return the exclusive range of a visual selection. -OP and CL are pairs of buffer positions for the opening and -closing delimiter of a range. SELECTION-TYPE is the desired type -of selection. It is a symbol that determines which parts of the -block are selected. If it is 'inclusive or t the returned range -is \(cons (car OP) (cdr CL)). If it is 'exclusive or nil the -returned range is (cons (cdr OP) (car CL)). If it is -'exclusive-line the returned range will skip whitespace at the -end of the line of OP and at the beginning of the line of CL." - (cond - ((memq selection-type '(inclusive t)) (cons (car op) (cdr cl))) - ((memq selection-type '(exclusive nil)) (cons (cdr op) (car cl))) - ((eq selection-type 'exclusive-line) - (let ((beg (cdr op)) - (end (car cl))) - (save-excursion - (goto-char beg) - (when (and (eolp) (not (eobp))) - (setq beg (line-beginning-position 2))) - (goto-char end) - (skip-chars-backward " \t") - (when (bolp) - (setq end (point)) - (goto-char beg) - (when (and (not (bolp)) (< beg end)) - (setq end (1- end))))) - (cons beg end))) - (t - (user-error "Unknown selection-type %s" selection-type)))) - -(defun evil-select-block (thing beg end type count - &optional - selection-type - countcurrent - fixedscan) - "Return a range (BEG END) of COUNT delimited text objects. -BEG END TYPE are the currently selected (visual) range. The -delimited object must be given by THING-up function (see -`evil-up-block'). - -SELECTION-TYPE is symbol that determines which parts of the block -are selected. If it is 'inclusive or t OPEN and CLOSE are -included in the range. If it is 'exclusive or nil the delimiters -are not contained. If it is 'exclusive-line the delimiters are -not included as well as adjacent whitespace until the beginning -of the next line or the end of the previous line. If the -resulting selection consists of complete lines only and visual -state is not active, the returned selection is linewise. - -If COUNTCURRENT is non-nil an objected is counted if the current -selection matches that object exactly. - -Usually scanning for the surrounding block starts at (1+ beg) -and (1- end). If this might fail due to the behavior of THING -then FIXEDSCAN can be set to t. In this case the scan starts at -BEG and END. One example where this might fail is if BEG and END -are the delimiters of a string or comment." - (save-excursion - (save-match-data - (let* ((orig-beg beg) - (orig-end end) - (beg (or beg (point))) - (end (or end (point))) - (count (abs (or count 1))) - op cl op-end cl-end) - ;; We always assume at least one selected character. - (if (= beg end) (setq end (1+ end))) - ;; We scan twice: starting at (1+ beg) forward and at (1- end) - ;; backward. The resulting selection is the smaller one. - (goto-char (if fixedscan beg (1+ beg))) - (when (and (zerop (funcall thing +1)) (match-beginning 0)) - (setq cl (cons (match-beginning 0) (match-end 0))) - (goto-char (car cl)) - (when (and (zerop (funcall thing -1)) (match-beginning 0)) - (setq op (cons (match-beginning 0) (match-end 0))))) - ;; start scanning from end - (goto-char (if fixedscan end (1- end))) - (when (and (zerop (funcall thing -1)) (match-beginning 0)) - (setq op-end (cons (match-beginning 0) (match-end 0))) - (goto-char (cdr op-end)) - (when (and (zerop (funcall thing +1)) (match-beginning 0)) - (setq cl-end (cons (match-beginning 0) (match-end 0))))) - ;; Bug #607: use the tightest selection that contains the - ;; original selection. If non selection contains the original, - ;; use the larger one. - (cond - ((and (not op) (not cl-end)) - (error "No surrounding delimiters found")) - ((or (not op) ; first not found - (and cl-end ; second found - (>= (car op-end) (car op)) ; second smaller - (<= (cdr cl-end) (cdr cl)) - (<= (car op-end) beg) ; second contains orig - (>= (cdr cl-end) end))) - (setq op op-end cl cl-end))) - (setq op-end op cl-end cl) ; store copy - ;; if the current selection contains the surrounding - ;; delimiters, they do not count as new selection - (let ((cnt (if (and orig-beg orig-end (not countcurrent)) - (let ((sel (evil--get-block-range op cl selection-type))) - (if (and (<= orig-beg (car sel)) - (>= orig-end (cdr sel))) - count - (1- count))) - (1- count)))) - ;; starting from the innermost surrounding delimiters - ;; increase selection - (when (> cnt 0) - (setq op (progn - (goto-char (car op-end)) - (funcall thing (- cnt)) - (if (match-beginning 0) - (cons (match-beginning 0) (match-end 0)) - op)) - cl (progn - (goto-char (cdr cl-end)) - (funcall thing cnt) - (if (match-beginning 0) - (cons (match-beginning 0) (match-end 0)) - cl))))) - (let ((sel (evil--get-block-range op cl selection-type))) - (setq op (car sel) - cl (cdr sel))) - (cond - ((and (equal op orig-beg) (equal cl orig-end) - (or (not countcurrent) - (and countcurrent (/= count 1)))) - (error "No surrounding delimiters found")) - ((save-excursion - (and (not (evil-visual-state-p)) - (eq type 'inclusive) - (progn (goto-char op) (bolp)) - (progn (goto-char cl) (bolp)))) - (evil-range op cl 'line :expanded t)) - (t - (evil-range op cl type :expanded t))))))) - -(defun evil-select-paren (open close beg end type count &optional inclusive) - "Return a range (BEG END) of COUNT delimited text objects. -OPEN and CLOSE specify the opening and closing delimiter, -respectively. BEG END TYPE are the currently selected (visual) -range. If INCLUSIVE is non-nil, OPEN and CLOSE are included in -the range; otherwise they are excluded. - -The types of OPEN and CLOSE specify which kind of THING is used -for parsing with `evil-select-block'. If OPEN and CLOSE are -characters `evil-up-paren' is used. Otherwise OPEN and CLOSE -must be regular expressions and `evil-up-block' is used. - -If the selection is exclusive, whitespace at the end or at the -beginning of the selection until the end-of-line or beginning-of-line -is ignored." - ;; we need special linewise exclusive selection - (unless inclusive (setq inclusive 'exclusive-line)) - (cond - ((and (characterp open) (characterp close)) - (let ((thing #'(lambda (&optional cnt) - (evil-up-paren open close cnt))) - (bnd (or (bounds-of-thing-at-point 'evil-string) - (bounds-of-thing-at-point 'evil-comment) - ;; If point is at the opening quote of a string, - ;; this must be handled as if point is within the - ;; string, i.e. the selection must be extended - ;; around the string. Otherwise - ;; `evil-select-block' might do the wrong thing - ;; because it accidentally moves point inside the - ;; string (for inclusive selection) when looking - ;; for the current surrounding block. (re #364) - (and (= (point) (or beg (point))) - (save-excursion - (goto-char (1+ (or beg (point)))) - (or (bounds-of-thing-at-point 'evil-string) - (bounds-of-thing-at-point 'evil-comment))))))) - (if (not bnd) - (evil-select-block thing beg end type count inclusive) - (or (evil-with-restriction (car bnd) (cdr bnd) - (condition-case nil - (evil-select-block thing beg end type count inclusive) - (error nil))) - (save-excursion - (setq beg (or beg (point)) - end (or end (point))) - (goto-char (car bnd)) - (let ((extbeg (min beg (car bnd))) - (extend (max end (cdr bnd)))) - (evil-select-block thing - extbeg extend - type - count - inclusive - (or (< extbeg beg) (> extend end)) - t))))))) - (t - (evil-select-block #'(lambda (&optional cnt) - (evil-up-block open close cnt)) - beg end type count inclusive)))) - -(defun evil-select-quote-thing (thing beg end type count &optional inclusive) - "Selection THING as if it described a quoted object. -THING is typically either 'evil-quote or 'evil-chars. This -function is called from `evil-select-quote'." - (save-excursion - (let* ((count (or count 1)) - (dir (if (> count 0) 1 -1)) - (bnd (let ((b (bounds-of-thing-at-point thing))) - (and b (< (point) (cdr b)) b))) - contains-string - addcurrent - wsboth) - (if inclusive (setq inclusive t) - (when (= (abs count) 2) - (setq count dir) - (setq inclusive 'quote-only)) - ;; never extend with exclusive selection - (setq beg nil end nil)) - ;; check if the previously selected range does not contain a - ;; string - (unless (and beg end - (save-excursion - (goto-char (if (> dir 0) beg end)) - (forward-thing thing dir) - (and (<= beg (point)) (< (point) end)))) - ;; if so forget the range - (setq beg nil end nil)) - ;; check if there is a current object, if not fetch one - (when (not bnd) - (unless (and (zerop (forward-thing thing dir)) - (setq bnd (bounds-of-thing-at-point thing))) - (error "No quoted string found")) - (if (> dir 0) - (setq end (point)) - (setq beg (point))) - (setq addcurrent t)) - ;; check if current object is not selected - (when (or (not beg) (not end) (> beg (car bnd)) (< end (cdr bnd))) - ;; if not, enlarge selection - (when (or (not beg) (< (car bnd) beg)) (setq beg (car bnd))) - (when (or (not end) (> (cdr bnd) end)) (setq end (cdr bnd))) - (setq addcurrent t wsboth t)) - ;; maybe count current element - (when addcurrent - (setq count (if (> dir 0) (1- count) (1+ count)))) - ;; enlarge selection - (goto-char (if (> dir 0) end beg)) - (when (and (not addcurrent) - (= count (forward-thing thing count))) - (error "No quoted string found")) - (if (> dir 0) (setq end (point)) (setq beg (point))) - ;; add whitespace - (cond - ((not inclusive) (setq beg (1+ beg) end (1- end))) - ((not (eq inclusive 'quote-only)) - ;; try to add whitespace in forward direction - (goto-char (if (> dir 0) end beg)) - (if (setq bnd (bounds-of-thing-at-point 'evil-space)) - (if (> dir 0) (setq end (cdr bnd)) (setq beg (car bnd))) - ;; if not found try backward direction - (goto-char (if (> dir 0) beg end)) - (if (and wsboth (setq bnd (bounds-of-thing-at-point 'evil-space))) - (if (> dir 0) (setq beg (car bnd)) (setq end (cdr bnd))))))) - (evil-range beg end - ;; HACK: fixes #583 - ;; When not in visual state, an empty range is - ;; possible. However, this cannot be achieved with - ;; inclusive ranges, hence we use exclusive ranges - ;; in this case. In visual state the range must be - ;; inclusive because otherwise the selection would - ;; be wrong. - (if (evil-visual-state-p) 'inclusive 'exclusive) - :expanded t)))) - -(defun evil-select-quote (quote beg end type count &optional inclusive) - "Return a range (BEG END) of COUNT quoted text objects. -QUOTE specifies the quotation delimiter. BEG END TYPE are the -currently selected (visual) range. - -If INCLUSIVE is nil the previous selection is ignore. If there is -quoted string at point this object will be selected, otherwise -the following (if (> COUNT 0)) or preceeding object (if (< COUNT -0)) is selected. If (/= (abs COUNT) 2) the delimiting quotes are not -contained in the range, otherwise they are contained in the range. - -If INCLUSIVE is non-nil the selection depends on the previous -selection. If the currently selection contains at least one -character that is contained in a quoted string then the selection -is extended, otherwise it is thrown away. If there is a -non-selected object at point then this object is added to the -selection. Otherwise the selection is extended to the -following (if (> COUNT 0)) or preceeding object (if (< COUNT -0)). Any whitespace following (or preceeding if (< COUNT 0)) the -new selection is added to the selection. If no such whitespace -exists and the selection contains only one quoted string then the -preceeding (or following) whitespace is added to the range. " - (let ((evil-forward-quote-char quote)) - (or (let ((bnd (or (bounds-of-thing-at-point 'evil-comment) - (bounds-of-thing-at-point 'evil-string)))) - (when (and bnd (< (point) (cdr bnd)) - (/= (char-after (car bnd)) quote) - (/= (char-before (cdr bnd)) quote)) - (evil-with-restriction (car bnd) (cdr bnd) - (condition-case nil - (evil-select-quote-thing 'evil-quote-simple - beg end type - count - inclusive) - (error nil))))) - (let ((evil-forward-quote-char quote)) - (evil-select-quote-thing 'evil-quote - beg end type - count - inclusive))))) - -(defun evil-select-xml-tag (beg end type &optional count inclusive) - "Return a range (BEG END) of COUNT matching XML tags. -If INCLUSIVE is non-nil, the tags themselves are included -from the range." - (cond - ((and (not inclusive) (= (abs (or count 1)) 1)) - (let ((rng (evil-select-block #'evil-up-xml-tag beg end type count nil t))) - (if (or (and beg (= beg (evil-range-beginning rng)) - end (= end (evil-range-end rng))) - (= (evil-range-beginning rng) (evil-range-end rng))) - (evil-select-block #'evil-up-xml-tag beg end type count t) - rng))) - (t - (evil-select-block #'evil-up-xml-tag beg end type count inclusive)))) - -(defun evil-expand-range (range &optional copy) - "Expand RANGE according to its type. -Return a new range if COPY is non-nil." - (when copy - (setq range (evil-copy-range range))) - (unless (plist-get (evil-range-properties range) :expanded) - (setq range (evil-transform-range :expand range))) - range) - -(defun evil-contract-range (range &optional copy) - "Contract RANGE according to its type. -Return a new range if COPY is non-nil." - (evil-transform-range :contract range copy)) - -(defun evil-normalize-range (range &optional copy) - "Normalize RANGE according to its type. -Return a new range if COPY is non-nil." - (evil-transform-range :normalize range copy)) - -(defun evil-transform-range (transform range &optional copy) - "Apply TRANSFORM to RANGE according to its type. -Return a new range if COPY is non-nil." - (when copy - (setq range (evil-copy-range range))) - (when (evil-type range) - (apply #'evil-set-range range - (apply #'evil-transform transform range))) - range) - -(defun evil-describe-range (range) - "Return description of RANGE. -If no description is available, return the empty string." - (apply #'evil-describe range)) - -;;; Undo - -(defun evil-start-undo-step (&optional continue) - "Start a undo step. -All following buffer modifications are grouped together as a -single action. If CONTINUE is non-nil, preceding modifications -are included. The step is terminated with `evil-end-undo-step'." - (when (and (listp buffer-undo-list) - (not evil-in-single-undo)) - (if evil-undo-list-pointer - (evil-refresh-undo-step) - (unless (or continue (null (car-safe buffer-undo-list))) - (undo-boundary)) - (setq evil-undo-list-pointer (or buffer-undo-list t))))) - -(defun evil-end-undo-step (&optional continue) - "End a undo step started with `evil-start-undo-step'. -Adds an undo boundary unless CONTINUE is specified." - (when (and (listp buffer-undo-list) - evil-undo-list-pointer - (not evil-in-single-undo)) - (evil-refresh-undo-step) - (unless (or continue (null (car-safe buffer-undo-list))) - (undo-boundary)) - (setq evil-undo-list-pointer nil))) - -(defun evil-refresh-undo-step () - "Refresh `buffer-undo-list' entries for current undo step. -Undo boundaries until `evil-undo-list-pointer' are removed to -make the entries undoable as a single action. See -`evil-start-undo-step'." - (when evil-undo-list-pointer - (setq buffer-undo-list - (evil-filter-list #'null buffer-undo-list evil-undo-list-pointer)) - (setq evil-undo-list-pointer (or buffer-undo-list t)))) - -(defmacro evil-with-undo (&rest body) - "Execute BODY with enabled undo. -If undo is disabled in the current buffer, the undo information -is stored in `evil-temporary-undo' instead of `buffer-undo-list'." - (declare (indent defun) - (debug t)) - `(unwind-protect - (let (buffer-undo-list) - (unwind-protect - (progn ,@body) - (setq evil-temporary-undo buffer-undo-list) - ;; ensure evil-temporary-undo starts with exactly one undo - ;; boundary marker, i.e. nil - (unless (null (car-safe evil-temporary-undo)) - (push nil evil-temporary-undo)))) - (unless (eq buffer-undo-list t) - ;; undo is enabled, so update the global buffer undo list - (setq buffer-undo-list - ;; prepend new undos (if there are any) - (if (cdr evil-temporary-undo) - (nconc evil-temporary-undo buffer-undo-list) - buffer-undo-list) - evil-temporary-undo nil)))) - -(defmacro evil-with-single-undo (&rest body) - "Execute BODY as a single undo step." - (declare (indent defun) - (debug t)) - `(let (evil-undo-list-pointer) - (evil-with-undo - (unwind-protect - (progn - (evil-start-undo-step) - (let ((evil-in-single-undo t)) - ,@body)) - (evil-end-undo-step))))) - -(defun evil-undo-pop () - "Undo the last buffer change. -Removes the last undo information from `buffer-undo-list'. -If undo is disabled in the current buffer, use the information -in `evil-temporary-undo' instead." - (let ((paste-undo (list nil))) - (let ((undo-list (if (eq buffer-undo-list t) - evil-temporary-undo - buffer-undo-list))) - (when (or (not undo-list) (car undo-list)) - (user-error "Can't undo previous change")) - (while (and undo-list (null (car undo-list))) - (pop undo-list)) ; remove nil - (while (and undo-list (car undo-list)) - (push (pop undo-list) paste-undo)) - (let ((buffer-undo-list (nreverse paste-undo))) - (evil-save-echo-area - (undo))) - (if (eq buffer-undo-list t) - (setq evil-temporary-undo nil) - (setq buffer-undo-list undo-list))))) - -;;; Search -(defun evil-transform-regexp (regexp replacements-alist) - (let ((pos 0) result) - (replace-regexp-in-string - "\\\\+[^\\\\]" - #'(lambda (txt) - (let* ((b (match-beginning 0)) - (e (match-end 0)) - (ch (aref txt (1- e))) - (repl (assoc ch replacements-alist))) - (if (and repl (zerop (mod (length txt) 2))) - (concat (substring txt b (- e 2)) - (cdr repl)) - txt))) - regexp nil t))) - -(defun evil-transform-magic (str magic quote transform &optional start) - "Transforms STR with magic characters. -MAGIC is a regexp that matches all potential magic -characters. Each occurence of CHAR as magic character within str -is replaced by the result of calling the associated TRANSFORM -function. TRANSFORM is a function taking two arguments, the -character to be transformed and the rest of string after the -character. The function should return a triple (REPLACEMENT REST -. STOP) where REPLACEMENT is the replacement and REST is the rest -of the string that has not been transformed. If STOP is non-nil -then the substitution stops immediately. The replacement starts -at position START, everything before that position is returned -literally. The result is a pair (RESULT . REST). RESULT is a -list containing the transformed parts in order. If two -subsequents parts are both strings, they are concatenated. REST -is the untransformed rest string (usually \"\" but may be more if -TRANSFORM stopped the substitution). Which characters are -considered as magic characters (i.e. the transformation happens -if the character is NOT preceeded by a backslash) is determined -by `evil-magic'. The special tokens \\v, \\V, \\m and \\M have -always a special meaning (like in Vim) and should not be -contained in TRANSFORMS, otherwise their meaning is overwritten. - -The parameter QUOTE is a quoting function applied to literal -transformations, usually `regexp-quote' or `replace-quote'." - (save-match-data - (let ((regexp (concat "\\(?:\\`\\|[^\\]\\)\\(\\\\\\(?:\\(" magic "\\)\\|\\(.\\)\\)\\|\\(" magic "\\)\\)")) - (magic-chars (evil-get-magic evil-magic)) - (evil-magic evil-magic) - (quote (or quote #'identity)) - result stop) - (while (and (not stop) str (string-match regexp str)) - (unless (zerop (match-beginning 1)) - (push (substring str 0 (match-beginning 1)) result)) - (let ((char (or (match-string 2 str) - (match-string 3 str) - (match-string 4 str))) - (rest (substring str (match-end 0)))) - (cond - ((match-beginning 4) - ;; magic character without backslash - (if (string-match magic-chars char) - ;; magic, do transform - (let ((trans (funcall transform (aref char 0) rest))) - (push (car trans) result) - (setq str (cadr trans) stop (nthcdr 2 trans))) - ;; non-magic, literal transformation - (push (funcall quote char) result) - (setq str rest))) - ((match-beginning 2) - ;; magic character with backslash - (if (not (string-match magic-chars char)) - ;; non-magic, do transform - (let ((trans (funcall transform (aref char 0) rest))) - (push (car trans) result) - (setq str (cadr trans) stop (nthcdr 2 trans))) - ;; magic, literal transformation - (push (funcall quote char) result) - (setq str rest))) - ((memq (aref char 0) '(?m ?M ?v ?V)) - (setq evil-magic (cdr (assq (aref char 0) - '((?m . t) - (?M . nil) - (?v . very-magic) - (?V . very-nomagic))))) - (setq magic-chars (evil-get-magic evil-magic)) - (setq str rest)) - (t - ;; non-magic char with backslash, literal transformation - (push (funcall quote char) result) - (setq str rest))))) - (cond - ((and str (not stop)) - (push str result) - (setq str "")) - ((not str) - (setq str ""))) - ;; concatenate subsequent strings - ;; note that result is in reverse order - (let (repl) - (while result - (cond - ((and (stringp (car result)) - (zerop (length (car result)))) - (pop result)) - ((and (stringp (car result)) - (stringp (cadr result))) - (setq result (cons (concat (cadr result) - (car result)) - (nthcdr 2 result)))) - (t - (push (pop result) repl)))) - (cons repl str))))) - -(defconst evil-vim-regexp-replacements - '((?n . "\n") (?r . "\r") - (?t . "\t") (?b . "\b") - (?s . "[[:space:]]") (?S . "[^[:space:]]") - (?d . "[[:digit:]]") (?D . "[^[:digit:]]") - (?x . "[[:xdigit:]]") (?X . "[^[:xdigit:]]") - (?o . "[0-7]") (?O . "[^0-7]") - (?a . "[[:alpha:]]") (?A . "[^[:alpha:]]") - (?l . "[a-z]") (?L . "[^a-z]") - (?u . "[A-Z]") (?U . "[^A-Z]") - (?y . "\\s") (?Y . "\\S") - (?\( . "\\(") (?\) . "\\)") - (?{ . "\\{") (?} . "\\}") - (?\[ . "[") (?\] . "]") - (?< . "\\<") (?> . "\\>") - (?_ . "\\_") - (?* . "*") (?+ . "+") - (?? . "?") (?= . "?") - (?. . ".") - (?` . "`") (?^ . "^") - (?$ . "$") (?| . "\\|"))) - -(defconst evil-regexp-magic "[][(){}<>_dDsSxXoOaAlLuUwWyY.*+?=^$`|nrtb]") - -(defun evil-transform-vim-style-regexp (regexp) - "Transforms vim-style backslash codes to Emacs regexp. -This includes the backslash codes \\d, \\D, \\s, \\S, \\x, \\X, -\\o, \\O, \\a, \\A, \\l, \\L, \\u, \\U and \\w, \\W. The new -codes \\y and \\Y can be used instead of the Emacs code \\s and -\\S which have a different meaning in Vim-style." - (car - (car - (evil-transform-magic - regexp evil-regexp-magic #'regexp-quote - #'(lambda (char rest) - (let ((repl (assoc char evil-vim-regexp-replacements))) - (if repl - (list (cdr repl) rest) - (list (concat "\\" (char-to-string char)) rest)))))))) - -;;; Substitute - -(defun evil-downcase-first (str) - "Return STR with the first letter downcased." - (if (zerop (length str)) - str - (concat (downcase (substring str 0 1)) - (substring str 1)))) - -(defun evil-upcase-first (str) - "Return STR with the first letter upcased." - (if (zerop (length str)) - str - (concat (upcase (substring str 0 1)) - (substring str 1)))) - -(defun evil-get-magic (magic) - "Returns a regexp matching the magic characters according to MAGIC. -Depending on the value of MAGIC the following characters are -considered magic. - t [][{}*+?.&~$^ - nil [][{}*+?$^ - 'very-magic not 0-9A-Za-z_ - 'very-nomagic empty." - (cond - ((eq magic t) "[][}{*+?.&~$^]") - ((eq magic 'very-magic) "[^0-9A-Za-z_]") - ((eq magic 'very-nomagic) "\\\\") - (t "[][}{*+?$^]"))) - -;; TODO: support magic characters in patterns -(defconst evil-replacement-magic "[eElLuU0-9&#,rnbt=]" - "All magic characters in a replacement string") - -(defun evil-compile-subreplacement (to &optional start) - "Convert a regexp replacement TO to Lisp from START until \\e or \\E. -Returns a pair (RESULT . REST). RESULT is a list suitable for -`perform-replace' if necessary, the original string if not. -REST is the unparsed remainder of TO." - (let ((result - (evil-transform-magic - to evil-replacement-magic #'replace-quote - #'(lambda (char rest) - (cond - ((eq char ?#) - (list '(number-to-string replace-count) rest)) - ((eq char ?r) (list "\r" rest)) - ((eq char ?n) (list "\n" rest)) - ((eq char ?b) (list "\b" rest)) - ((eq char ?t) (list "\t" rest)) - ((memq char '(?e ?E)) - `("" ,rest . t)) - ((memq char '(?l ?L ?u ?U)) - (let ((result (evil-compile-subreplacement rest)) - (func (cdr (assoc char - '((?l . evil-downcase-first) - (?L . downcase) - (?u . evil-upcase-first) - (?U . upcase)))))) - (list `(,func - (replace-quote - (evil-match-substitute-replacement - ,(car result) - (not case-replace)))) - (cdr result)))) - ((eq char ?=) - (when (or (zerop (length rest)) - (not (eq (aref rest 0) ?@))) - (user-error "Expected @ after \\=")) - (when (< (length rest) 2) - (user-error "Expected register after \\=@")) - (list (evil-get-register (aref rest 1)) - (substring rest 2))) - ((eq char ?,) - (let* ((obj (read-from-string rest)) - (result `(replace-quote ,(car obj))) - (end - ;; swallow a space after a symbol - (if (and (or (symbolp (car obj)) - ;; swallow a space after 'foo, - ;; but not after (quote foo) - (and (eq (car-safe (car obj)) 'quote) - (not (= ?\( (aref rest 0))))) - (eq (string-match " " rest (cdr obj)) - (cdr obj))) - (1+ (cdr obj)) - (cdr obj)))) - (list result (substring rest end)))) - ((eq char ?0) - (list "\\&" rest)) - (t - (list (concat "\\" (char-to-string char)) rest)))) - start))) - (let ((rest (cdr result)) - (result (car result))) - (replace-match-string-symbols result) - (cons (if (cdr result) - (cons 'concat result) - (or (car result) "")) - rest)))) - -(defun evil-compile-replacement (to) - "Maybe convert a regexp replacement TO to Lisp. -Returns a list suitable for `perform-replace' if necessary, the -original string if not. Currently the following magic characters -in replacements are supported: 0-9&#lLuUrnbt, -The magic character , (comma) start an Emacs-lisp expression." - (when (stringp to) - (save-match-data - (cons 'replace-eval-replacement - (car (evil-compile-subreplacement to)))))) - -(defun evil-replace-match (replacement &optional fixedcase string) - "Replace text match by last search with REPLACEMENT. -If REPLACEMENT is an expression it will be evaluated to compute -the replacement text, otherwise the function behaves as -`replace-match'." - (if (stringp replacement) - (replace-match replacement fixedcase nil string) - (replace-match (funcall (car replacement) - (cdr replacement) - 0) - fixedcase nil string))) - -(defun evil-match-substitute-replacement (replacement &optional fixedcase string) - "Return REPLACEMENT as it will be inserted by `evil-replace-match'." - (if (stringp replacement) - (match-substitute-replacement replacement fixedcase nil string) - (match-substitute-replacement (funcall (car replacement) - (cdr replacement) - 0) - fixedcase nil string))) - -;;; Alignment - -(defun evil-justify-lines (beg end justify position) - "Justifes all lines in a range. -BEG and END specify the range of those lines to be -justified. JUSTIFY is either 'left, 'right or 'center according -to the justification type. POSITION is the maximal text width for -right and center justification or the column at which the lines -should be left-aligned for left justification." - (let ((fill-column position) - adaptive-fill-mode fill-prefix) - (evil-with-restriction - (save-excursion - (goto-char beg) - (line-beginning-position)) - (save-excursion - (goto-char end) - (if (bolp) - (line-end-position 0) - (line-end-position))) - (goto-char (point-min)) - (while (progn - (if (eq justify 'left) - (indent-line-to position) - (when (re-search-forward "^[[:space:]]*" nil t) - (delete-region (match-beginning 0) - (match-end 0))) - (justify-current-line justify nil t)) - (and (zerop (forward-line)) (bolp)))) - (goto-char (point-min)) - (back-to-indentation)))) - -;;; View helper - -(defvar-local evil-list-view-select-action nil) -(put 'evil-list-view-select-action 'permanent-local t) - -(define-derived-mode evil-list-view-mode tabulated-list-mode - "Evil List View" - (tabulated-list-init-header) - (tabulated-list-print)) - -(defun evil-list-view-goto-entry () - (interactive) - (when (and evil-list-view-select-action - (not (eobp))) - (let* ((line (line-number-at-pos (point))) - (entry (elt tabulated-list-entries (1- line)))) - (funcall evil-list-view-select-action (nth 1 entry))))) - -(define-key evil-list-view-mode-map (kbd "q") #'kill-this-buffer) -(define-key evil-list-view-mode-map [follow-link] nil) ;; allows mouse-1 to be activated -(define-key evil-list-view-mode-map [mouse-1] #'evil-list-view-goto-entry) -(define-key evil-list-view-mode-map [return] #'evil-list-view-goto-entry) - -(defmacro evil-with-view-list (&rest properties) - "Opens new list view buffer. - -PROPERTIES is a property-list which supports the following properties: - -:name (required) The name of the buffer. -:mode-name (required) The name for the mode line. -:format (required) The value for `tabulated-list-format'. -:entries (required) The value for `tabulated-list-entries'. -:select-action (optional) A function for row selection. - It takes in a single parameter, which is the selected row's - vector value that is passed into `:entries'. -" - (declare (indent defun) (debug t)) - `(let ((bufname (concat "*" ,(plist-get properties :name) "*")) - (inhibit-read-only t)) - (and (get-buffer bufname) - (kill-buffer bufname)) - (let ((buf (get-buffer-create bufname))) - (with-current-buffer buf - (setq tabulated-list-format ,(plist-get properties :format)) - (setq tabulated-list-entries ,(plist-get properties :entries)) - (setq evil-list-view-select-action ,(plist-get properties :select-action)) - (evil-list-view-mode) - (setq mode-name ,(plist-get properties :mode-name)) - (evil-motion-state)) - (switch-to-buffer-other-window buf)))) - -(provide 'evil-common) - -;;; evil-common.el ends here |