-;;; context-coloring.el --- Syntax highlighting, except not for syntax. -*- lexical-binding: t; -*-
+;;; context-coloring.el --- Highlight by scope -*- lexical-binding: t; -*-
;; Copyright (C) 2014-2015 Free Software Foundation, Inc.
;; Author: Jackson Ray Hamilton <jackson@jacksonrayhamilton.com>
-;; URL: https://github.com/jacksonrayhamilton/context-coloring
-;; Keywords: context coloring syntax highlighting
-;; Version: 6.2.0
+;; Version: 6.3.0
+;; Keywords: convenience faces tools
;; Package-Requires: ((emacs "24") (js2-mode "20150126"))
+;; URL: https://github.com/jacksonrayhamilton/context-coloring
;; This file is part of GNU Emacs.
;;; Commentary:
-;; Highlights code according to function context.
-
-;; - Code in the global scope is one color. Code in functions within the global
-;; scope is a different color, and code within such functions is another
-;; color, and so on.
-;; - Identifiers retain the color of the scope in which they are declared.
-
-;; Lexical scope information at-a-glance can assist a programmer in
-;; understanding the overall structure of a program. It can help to curb nasty
-;; bugs like name shadowing. A rainbow can indicate excessive complexity.
-;; State change within a closure is easily monitored.
-
-;; By default, Context Coloring still highlights comments and strings
-;; syntactically. It is still easy to differentiate code from non-code, and
-;; strings cannot be confused for variables.
-
-;; To use, add the following to your ~/.emacs:
-
-;; (require 'context-coloring)
-;; (add-hook 'js2-mode-hook 'context-coloring-mode)
-
-;; js-mode or js3-mode support requires Node.js 0.10+ and the scopifier
-;; executable.
+;; Highlights code by scope. Top-level scopes are one color, second-level
+;; scopes are another color, and so on. Variables retain the color of the scope
+;; in which they are defined. A variable defined in an outer scope referenced
+;; by an inner scope is colored the same as the outer scope.
-;; $ npm install -g scopifier
+;; By default, comments and strings are still highlighted syntactically.
;;; Code:
(require 'js2-mode)
-;;; Local variables
-
-(defvar-local context-coloring-buffer nil
- "Reference to this buffer (for timers).")
-
-
;;; Utilities
(defun context-coloring-join (strings delimiter)
"Join a list of STRINGS with the string DELIMITER."
(mapconcat 'identity strings delimiter))
+(defsubst context-coloring-trim-right (string)
+ "Remove leading whitespace from STRING."
+ (if (string-match "[ \t\n\r]+\\'" string)
+ (replace-match "" t t string)
+ string))
+
+(defsubst context-coloring-trim-left (string)
+ "Remove trailing whitespace from STRING."
+ (if (string-match "\\`[ \t\n\r]+" string)
+ (replace-match "" t t string)
+ string))
+
+(defsubst context-coloring-trim (string)
+ "Remove leading and trailing whitespace from STRING."
+ (context-coloring-trim-left (context-coloring-trim-right string)))
+
;;; Faces
(context-coloring-defface level nil "#3f3f3f" "#cdcdcd"))
(context-coloring-defface 0 nil "#000000" "#ffffff")
-(context-coloring-defface 1 "yellow" "#007f80" "#ffff80")
-(context-coloring-defface 2 "green" "#001580" "#cdfacd")
-(context-coloring-defface 3 "cyan" "#550080" "#d8d8ff")
-(context-coloring-defface 4 "blue" "#802b00" "#e7c7ff")
-(context-coloring-defface 5 "magenta" "#6a8000" "#ffcdcd")
-(context-coloring-defface 6 "red" "#008000" "#ffe390")
+(context-coloring-defface 1 "yellow" "#008b8b" "#00ffff")
+(context-coloring-defface 2 "green" "#0000ff" "#87cefa")
+(context-coloring-defface 3 "cyan" "#483d8b" "#b0c4de")
+(context-coloring-defface 4 "blue" "#a020f0" "#eedd82")
+(context-coloring-defface 5 "magenta" "#a0522d" "#98fb98")
+(context-coloring-defface 6 "red" "#228b22" "#7fffd4")
(context-coloring-defface-neutral 7)
(defvar context-coloring-maximum-face nil
"Tell `font-lock' to color a string but not a comment."
(if (nth 3 state) font-lock-string-face nil))
-(defsubst context-coloring-maybe-colorize-comments-and-strings ()
+(defsubst context-coloring-maybe-colorize-comments-and-strings (&optional min max)
"Color the current buffer's comments and strings if
`context-coloring-comments-and-strings' is non-nil."
(when (or context-coloring-comments-and-strings
context-coloring-syntactic-comments
context-coloring-syntactic-strings)
- (let ((old-function font-lock-syntactic-face-function)
- saved-function-p)
- (cond
- ((and context-coloring-syntactic-comments
- (not context-coloring-syntactic-strings))
- (setq font-lock-syntactic-face-function
- 'context-coloring-font-lock-syntactic-comment-function)
- (setq saved-function-p t))
- ((and context-coloring-syntactic-strings
- (not context-coloring-syntactic-comments))
- (setq font-lock-syntactic-face-function
- 'context-coloring-font-lock-syntactic-string-function)
- (setq saved-function-p t)))
+ (let ((min (or min (point-min)))
+ (max (or max (point-max)))
+ (font-lock-syntactic-face-function
+ (cond
+ ((and context-coloring-syntactic-comments
+ (not context-coloring-syntactic-strings))
+ 'context-coloring-font-lock-syntactic-comment-function)
+ ((and context-coloring-syntactic-strings
+ (not context-coloring-syntactic-comments))
+ 'context-coloring-font-lock-syntactic-string-function)
+ (t
+ font-lock-syntactic-face-function))))
(save-excursion
- (font-lock-fontify-syntactically-region (point-min) (point-max)))
- (when saved-function-p
- (setq font-lock-syntactic-face-function old-function)))))
+ (font-lock-fontify-syntactically-region min max)
+ ;; TODO: Make configurable at the dispatch level.
+ (when (eq major-mode 'emacs-lisp-mode)
+ (font-lock-fontify-keywords-region min max))))))
;;; js2-mode colorization
;; `js2-prop-get-node', so this always works.
(eq node (js2-prop-get-node-right parent))))))))
+(defvar-local context-coloring-point-max nil
+ "Cached value of `point-max'.")
+
(defsubst context-coloring-js2-colorize-node (node level)
"Color NODE with the color for LEVEL."
(let ((start (js2-node-abs-pos node)))
(context-coloring-colorize-region
start
- (+ start (js2-node-len node)) ; End
+ (min
+ ;; End
+ (+ start (js2-node-len node))
+ ;; Somes nodes (like the ast when there is an unterminated multiline
+ ;; comment) will stretch to the value of `point-max'.
+ context-coloring-point-max)
level)))
(defun context-coloring-js2-colorize ()
generated by `js2-mode'."
;; Reset the hash table; the old one could be obsolete.
(setq context-coloring-js2-scope-level-hash-table (make-hash-table :test 'eq))
+ (setq context-coloring-point-max (point-max))
(with-silent-modifications
(js2-visit-ast
js2-mode-ast
(context-coloring-maybe-colorize-comments-and-strings)))
+;;; Emacs Lisp colorization
+
+(defsubst context-coloring-make-scope (depth level)
+ (list
+ :depth depth
+ :level level
+ :variables (make-hash-table)))
+
+(defsubst context-coloring-scope-get-level (scope)
+ (plist-get scope :level))
+
+(defsubst context-coloring-scope-add-variable (scope variable)
+ (puthash variable t (plist-get scope :variables)))
+
+(defsubst context-coloring-scope-get-variable (scope variable)
+ (gethash variable (plist-get scope :variables)))
+
+(defsubst context-coloring-get-variable-level (scope-stack variable)
+ (let* (scope
+ level)
+ (while (and scope-stack (not level))
+ (setq scope (car scope-stack))
+ (cond
+ ((context-coloring-scope-get-variable scope variable)
+ (setq level (context-coloring-scope-get-level scope)))
+ (t
+ (setq scope-stack (cdr scope-stack)))))
+ ;; Assume a global variable.
+ (or level 0)))
+
+(defsubst context-coloring-make-backtick (end enabled)
+ (list
+ :end end
+ :enabled enabled))
+
+(defsubst context-coloring-backtick-get-end (backtick)
+ (plist-get backtick :end))
+
+(defsubst context-coloring-backtick-get-enabled (backtick)
+ (plist-get backtick :enabled))
+
+(defsubst context-coloring-backtick-enabled-p (backtick-stack)
+ (context-coloring-backtick-get-enabled (car backtick-stack)))
+
+(defsubst context-coloring-make-let-varlist (depth type)
+ (list
+ :depth depth
+ :type type
+ :vars '()))
+
+(defsubst context-coloring-let-varlist-get-type (let-varlist)
+ (plist-get let-varlist :type))
+
+(defsubst context-coloring-let-varlist-add-var (let-varlist var)
+ (plist-put let-varlist :vars (cons var (plist-get let-varlist :vars))))
+
+(defsubst context-coloring-let-varlist-pop-vars (let-varlist)
+ (let ((type (context-coloring-let-varlist-get-type let-varlist))
+ (vars (plist-get let-varlist :vars)))
+ (cond
+ ;; `let' binds all at once at the end.
+ ((eq type 'let)
+ (prog1
+ vars
+ (plist-put let-varlist :vars '())))
+ ;; `let*' binds incrementally.
+ ((eq type 'let*)
+ (prog1
+ (list (car vars))
+ (plist-put let-varlist :vars (cdr vars)))))))
+
+(defsubst context-coloring-forward-sws ()
+ "Move forward through whitespace and comments."
+ (while (forward-comment 1)))
+
+(defsubst context-coloring-forward-sexp-position ()
+ "Like vanilla `forward-sexp', but just return the position."
+ (scan-sexps (point) 1))
+
+(defsubst context-coloring-emacs-lisp-identifier-syntax-p (syntax-code)
+ (or (= 2 syntax-code)
+ (= 3 syntax-code)))
+
+(defsubst context-coloring-open-parenthesis-p (syntax-code)
+ (= 4 syntax-code))
+
+(defsubst context-coloring-close-parenthesis-p (syntax-code)
+ (= 5 syntax-code))
+
+(defsubst context-coloring-expression-prefix-p (syntax-code)
+ (= 6 syntax-code))
+
+(defsubst context-coloring-at-open-parenthesis-p ()
+ (= 4 (logand #xFFFF (car (syntax-after (point))))))
+
+(defsubst context-coloring-ppss-depth (ppss)
+ ;; Same as (nth 0 ppss).
+ (car ppss))
+
+(defsubst context-coloring-at-stack-depth-p (stack depth)
+ (= (plist-get (car stack) :depth) depth))
+
+(defsubst context-coloring-exact-regexp (word)
+ "Create a regexp that matches exactly WORD."
+ (concat "\\`" (regexp-quote word) "\\'"))
+
+(defsubst context-coloring-exact-or-regexp (words)
+ "Create a regexp that matches any exact word in WORDS."
+ (context-coloring-join
+ (mapcar 'context-coloring-exact-regexp words) "\\|"))
+
+(defconst context-coloring-emacs-lisp-defun-regexp
+ (context-coloring-exact-or-regexp
+ '("defun" "defun*" "defsubst" "defmacro"
+ "cl-defun" "cl-defsubst" "cl-defmacro")))
+
+(defconst context-coloring-emacs-lisp-lambda-regexp
+ (context-coloring-exact-regexp "lambda"))
+
+(defconst context-coloring-emacs-lisp-let-regexp
+ (context-coloring-exact-regexp "let"))
+
+(defconst context-coloring-emacs-lisp-let*-regexp
+ (context-coloring-exact-regexp "let*"))
+
+(defconst context-coloring-arglist-arg-regexp
+ "\\`[^&:]")
+
+(defconst context-coloring-ignored-word-regexp
+ (concat "\\`[-+]?[0-9]\\|" (context-coloring-exact-or-regexp
+ '("t" "nil" "." "?"))))
+
+(defconst context-coloring-COMMA-CHAR 44)
+(defconst context-coloring-BACKTICK-CHAR 96)
+
+(defvar context-coloring-parse-interruptable-p t
+ "Set this to nil to force parse to continue until finished.")
+
+(defconst context-coloring-emacs-lisp-iterations-per-pause 1000
+ "Pause after this many iterations to check for user input.
+If user input is pending, stop the parse. This makes for a
+smoother user experience for large files.
+
+As of this writing, emacs lisp colorization seems to run at about
+60,000 iterations per second. A default value of 1000 should
+provide visually \"instant\" updates at 60 frames per second.")
+
+(defun context-coloring-emacs-lisp-colorize ()
+ "Color the current buffer by parsing emacs lisp sexps."
+ (with-silent-modifications
+ (save-excursion
+ ;; TODO: Can probably make this lazy to the nearest defun.
+ (goto-char (point-min))
+ (let* ((inhibit-point-motion-hooks t)
+ (end (point-max))
+ (iteration-count 0)
+ (last-fontified-position (point))
+ beginning-of-current-defun
+ end-of-current-defun
+ (last-ppss-pos (point))
+ (ppss (syntax-ppss))
+ ppss-depth
+ ;; -1 never matches a depth. This is a minor optimization.
+ (scope-stack `(,(context-coloring-make-scope -1 0)))
+ (backtick-stack '())
+ (let-varlist-stack '())
+ (let-var-stack '())
+ popped-vars
+ one-word-found-p
+ in-defun-p
+ in-lambda-p
+ in-let-p
+ in-let*-p
+ defun-arglist
+ defun-arg
+ let-varlist
+ let-varlist-type
+ variable
+ variable-end
+ variable-string
+ variable-scope-level
+ token-pos
+ token-syntax
+ token-syntax-code
+ token-char
+ child-0-pos
+ child-0-end
+ child-0-syntax
+ child-0-syntax-code
+ child-0-string
+ child-1-pos
+ child-1-end
+ child-1-syntax
+ child-1-syntax-code
+ child-2-end)
+ (while (> end (progn (skip-syntax-forward "^()w_'" end)
+ (point)))
+ ;; Sparingly-executed tasks.
+ (setq iteration-count (1+ iteration-count))
+ (when (zerop (% iteration-count
+ context-coloring-emacs-lisp-iterations-per-pause))
+ ;; Fontify until the end of the current defun because doing it in
+ ;; chunks based soley on point could result in partial
+ ;; re-fontifications over the contents of scopes.
+ (save-excursion
+ (end-of-defun)
+ (setq end-of-current-defun (point))
+ (beginning-of-defun)
+ (setq beginning-of-current-defun (point)))
+
+ ;; Fontify in chunks.
+ (context-coloring-maybe-colorize-comments-and-strings
+ last-fontified-position
+ (cond
+ ;; We weren't actually in a defun, so don't color the next one, as
+ ;; that could result in `font-lock' properties being added to it.
+ ((> beginning-of-current-defun (point))
+ (point))
+ (t
+ end-of-current-defun)))
+ (setq last-fontified-position (point))
+ (when (and context-coloring-parse-interruptable-p
+ (input-pending-p))
+ (throw 'interrupted t)))
+
+ (setq token-pos (point))
+ (setq token-syntax (syntax-after token-pos))
+ (setq token-syntax-code (logand #xFFFF (car token-syntax)))
+ (setq token-char (char-after))
+ (setq ppss (parse-partial-sexp last-ppss-pos token-pos nil nil ppss))
+ (setq last-ppss-pos token-pos)
+ (cond
+
+ ;; Resolve an invalid state.
+ ((cond
+ ;; Inside string?
+ ((nth 3 ppss)
+ (skip-syntax-forward "^\"" end)
+ (forward-char)
+ t)
+ ;; Inside comment?
+ ((nth 4 ppss)
+ (skip-syntax-forward "^>" end)
+ t)))
+
+ ;; Need to check early in case there's a comma.
+ ((context-coloring-expression-prefix-p token-syntax-code)
+ (forward-char)
+ (cond
+ ;; Skip top-level symbols.
+ ((not (or backtick-stack
+ (= token-char context-coloring-BACKTICK-CHAR)))
+ (goto-char (context-coloring-forward-sexp-position)))
+ ;; Push a backtick state.
+ ((or (= token-char context-coloring-BACKTICK-CHAR)
+ (= token-char context-coloring-COMMA-CHAR))
+ (setq backtick-stack (cons (context-coloring-make-backtick
+ (context-coloring-forward-sexp-position)
+ (= token-char context-coloring-BACKTICK-CHAR))
+ backtick-stack)))))
+
+ ;; Pop a backtick state.
+ ((and backtick-stack
+ (>= (point) (context-coloring-backtick-get-end (car backtick-stack))))
+ (setq backtick-stack (cdr backtick-stack)))
+
+ ;; Restricted by an enabled backtick.
+ ((and backtick-stack
+ (context-coloring-backtick-enabled-p backtick-stack))
+ (forward-char))
+
+ ((context-coloring-open-parenthesis-p token-syntax-code)
+ (forward-char)
+ ;; Look for function calls.
+ (context-coloring-forward-sws)
+ (setq child-0-pos (point))
+ (setq child-0-syntax (syntax-after child-0-pos))
+ (setq child-0-syntax-code (logand #xFFFF (car child-0-syntax)))
+ (cond
+ ((context-coloring-emacs-lisp-identifier-syntax-p child-0-syntax-code)
+ (setq one-word-found-p t)
+ (setq child-0-end (scan-sexps child-0-pos 1))
+ (setq child-0-string (buffer-substring-no-properties child-0-pos child-0-end))
+ (cond
+ ;; Parse a var in a `let' varlist.
+ ((and
+ let-varlist-stack
+ (context-coloring-at-stack-depth-p
+ let-varlist-stack
+ ;; 1- because we're inside the varlist.
+ (1- (context-coloring-ppss-depth ppss))))
+ (context-coloring-let-varlist-add-var
+ (car let-varlist-stack)
+ (intern child-0-string))
+ (setq let-var-stack (cons (context-coloring-ppss-depth ppss)
+ let-var-stack)))
+ ((string-match-p context-coloring-emacs-lisp-defun-regexp child-0-string)
+ (setq in-defun-p t))
+ ((string-match-p context-coloring-emacs-lisp-lambda-regexp child-0-string)
+ (setq in-lambda-p t))
+ ((string-match-p context-coloring-emacs-lisp-let-regexp child-0-string)
+ (setq in-let-p t)
+ (setq let-varlist-type 'let))
+ ((string-match-p context-coloring-emacs-lisp-let*-regexp child-0-string)
+ (setq in-let*-p t)
+ (setq let-varlist-type 'let*)))))
+ (when (or in-defun-p
+ in-lambda-p
+ in-let-p
+ in-let*-p)
+ (setq scope-stack (cons (context-coloring-make-scope
+ (context-coloring-ppss-depth ppss)
+ (1+ (context-coloring-scope-get-level
+ (car scope-stack))))
+ scope-stack)))
+ ;; TODO: Maybe wasteful but doing this conditionally doesn't make
+ ;; much of a difference.
+ (context-coloring-colorize-region token-pos
+ (scan-sexps token-pos 1)
+ (context-coloring-scope-get-level
+ (car scope-stack)))
+ (cond
+ ((or in-defun-p
+ in-lambda-p)
+ (goto-char child-0-end)
+ (when in-defun-p
+ ;; Look for a function name.
+ (context-coloring-forward-sws)
+ (setq child-1-pos (point))
+ (setq child-1-syntax (syntax-after child-1-pos))
+ (setq child-1-syntax-code (logand #xFFFF (car child-1-syntax)))
+ (cond
+ ((context-coloring-emacs-lisp-identifier-syntax-p child-1-syntax-code)
+ (setq child-1-end (scan-sexps child-1-pos 1))
+ ;; Defuns are global, so use level 0.
+ (context-coloring-colorize-region child-1-pos child-1-end 0)
+ (goto-char child-1-end))))
+ ;; Look for an arglist.
+ (context-coloring-forward-sws)
+ (when (context-coloring-at-open-parenthesis-p)
+ ;; (Actually it should be `child-1-end' for `lambda'.)
+ (setq child-2-end (context-coloring-forward-sexp-position))
+ (setq defun-arglist (read (buffer-substring-no-properties
+ (point)
+ child-2-end)))
+ (while defun-arglist
+ (setq defun-arg (car defun-arglist))
+ (when (and (symbolp defun-arg)
+ (string-match-p
+ context-coloring-arglist-arg-regexp
+ (symbol-name defun-arg)))
+ (context-coloring-scope-add-variable
+ (car scope-stack)
+ defun-arg))
+ (setq defun-arglist (cdr defun-arglist)))
+ (goto-char child-2-end))
+ ;; Cleanup.
+ (setq in-defun-p nil)
+ (setq in-lambda-p nil))
+ ((or in-let-p
+ in-let*-p)
+ (goto-char child-0-end)
+ ;; Look for a varlist.
+ (context-coloring-forward-sws)
+ (setq child-1-pos (point))
+ (setq child-1-syntax (syntax-after child-1-pos))
+ (setq child-1-syntax-code (logand #xFFFF (car child-1-syntax)))
+ (when (context-coloring-open-parenthesis-p child-1-syntax-code)
+ ;; Begin parsing the varlist.
+ (forward-char)
+ (setq let-varlist-stack (cons (context-coloring-make-let-varlist
+ ;; 1+ because we parsed it at a
+ ;; higher depth.
+ (1+ (context-coloring-ppss-depth ppss))
+ let-varlist-type)
+ let-varlist-stack)))
+ ;; Cleanup.
+ (setq in-let-p nil)
+ (setq in-let*-p nil))
+ (t
+ (goto-char (cond
+ ;; If there was a word, continue parsing after it.
+ (one-word-found-p
+ (1+ child-0-end))
+ (t
+ (1+ token-pos))))))
+ ;; Cleanup.
+ (setq one-word-found-p nil))
+
+ ((context-coloring-emacs-lisp-identifier-syntax-p token-syntax-code)
+ (setq variable-end (context-coloring-forward-sexp-position))
+ (setq variable-string (buffer-substring-no-properties
+ token-pos
+ variable-end))
+ (cond
+ ;; Ignore constants such as numbers, keywords, t, nil. These can't
+ ;; be rebound, so they should be treated like syntax.
+ ((string-match-p context-coloring-ignored-word-regexp variable-string))
+ ((keywordp (read variable-string)))
+ (t
+ (setq variable (intern variable-string))
+ (cond
+ ;; Parse a `let' varlist's uninitialized var.
+ ((and
+ let-varlist-stack
+ (context-coloring-at-stack-depth-p
+ let-varlist-stack
+ ;; 1- because we're inside the varlist.
+ (1- (context-coloring-ppss-depth ppss))))
+ (setq let-varlist (car let-varlist-stack))
+ (setq let-varlist-type (context-coloring-let-varlist-get-type let-varlist))
+ (cond
+ ;; Defer `let' binding until the end of the varlist.
+ ((eq let-varlist-type 'let)
+ (context-coloring-let-varlist-add-var let-varlist variable))
+ ;; Bind a `let*' right away.
+ ((eq let-varlist-type 'let*)
+ (context-coloring-scope-add-variable (car scope-stack) variable))))
+ (t
+ (setq variable-scope-level
+ (context-coloring-get-variable-level scope-stack variable))
+ (when (/= variable-scope-level (context-coloring-scope-get-level
+ (car scope-stack)))
+ (context-coloring-colorize-region
+ token-pos
+ variable-end
+ variable-scope-level))))))
+ (goto-char variable-end))
+
+ ((context-coloring-close-parenthesis-p token-syntax-code)
+ (forward-char)
+ (setq ppss (parse-partial-sexp last-ppss-pos (point) nil nil ppss))
+ (setq last-ppss-pos (point))
+ (setq ppss-depth (context-coloring-ppss-depth ppss))
+ ;; TODO: Order might matter here but I'm not certain.
+ (when (context-coloring-at-stack-depth-p scope-stack ppss-depth)
+ (setq scope-stack (cdr scope-stack)))
+ (when (and
+ let-var-stack
+ (= (car let-var-stack) ppss-depth))
+ (setq let-var-stack (cdr let-var-stack))
+ (when (eq (context-coloring-let-varlist-get-type (car let-varlist-stack))
+ 'let*)
+ (setq popped-vars (context-coloring-let-varlist-pop-vars
+ (car let-varlist-stack)))))
+ (when (and
+ let-varlist-stack
+ (context-coloring-at-stack-depth-p let-varlist-stack ppss-depth))
+ (setq popped-vars (context-coloring-let-varlist-pop-vars
+ (car let-varlist-stack)))
+ (setq let-varlist-stack (cdr let-varlist-stack)))
+ (while popped-vars
+ (context-coloring-scope-add-variable (car scope-stack) (car popped-vars))
+ (setq popped-vars (cdr popped-vars))))
+
+ ))
+ ;; Fontify the last stretch.
+ (context-coloring-maybe-colorize-comments-and-strings
+ last-fontified-position
+ (point))))))
+
+
;;; Shell command scopification / colorization
(defun context-coloring-apply-tokens (tokens)
(defun context-coloring-parse-array (array)
"Parse ARRAY as a flat JSON array of numbers."
- (vconcat
- (mapcar 'string-to-number (split-string (substring array 1 -1) ","))))
+ (let ((braceless (substring (context-coloring-trim array) 1 -1)))
+ (cond
+ ((> (length braceless) 0)
+ (vconcat
+ (mapcar 'string-to-number (split-string braceless ","))))
+ (t
+ (vector)))))
(defvar-local context-coloring-scopifier-process nil
"The single scopifier process that can be running.")
list of tokens to `context-coloring-apply-tokens'.
Invoke CALLBACK when complete."
- (let ((buffer context-coloring-buffer))
+ (let ((buffer (current-buffer)))
(context-coloring-scopify-shell-command
command
(lambda (output)
(defvar context-coloring-mode-hash-table (make-hash-table :test 'eq)
"Map major mode names to dispatch property lists.")
-(defun context-coloring-select-dispatch (mode dispatch)
- "Use DISPATCH for MODE."
- (puthash
- mode
- (gethash
- dispatch
- context-coloring-dispatch-hash-table)
- context-coloring-mode-hash-table))
+(defun context-coloring-get-dispatch-for-mode (mode)
+ "Return the dispatch for MODE (or a derivative mode)."
+ (let ((parent mode)
+ dispatch)
+ (while (and parent
+ (not (setq dispatch (gethash parent context-coloring-mode-hash-table)))
+ (setq parent (get parent 'derived-mode-parent))))
+ dispatch))
(defun context-coloring-define-dispatch (symbol &rest properties)
"Define a new dispatch named SYMBOL with PROPERTIES.
(error "No colorizer, scopifier or command defined for dispatch"))
(puthash symbol properties context-coloring-dispatch-hash-table)
(dolist (mode modes)
- (when (null (gethash mode context-coloring-mode-hash-table))
- (puthash mode properties context-coloring-mode-hash-table)))))
-
-(context-coloring-define-dispatch
- 'javascript-node
- :modes '(js-mode js3-mode)
- :executable "scopifier"
- :command "scopifier"
- :version "v1.1.1")
-
-(context-coloring-define-dispatch
- 'javascript-js2
- :modes '(js2-mode)
- :colorizer 'context-coloring-js2-colorize
- :setup
- (lambda ()
- (add-hook 'js2-post-parse-callbacks 'context-coloring-colorize nil t))
- :teardown
- (lambda ()
- (remove-hook 'js2-post-parse-callbacks 'context-coloring-colorize t)))
-
-(defun context-coloring-dispatch (&optional callback)
- "Determine the optimal track for scopification / coloring of
-the current buffer, then execute it.
-
-Invoke CALLBACK when complete. It is invoked synchronously for
-elisp tracks, and asynchronously for shell command tracks."
- (let ((dispatch (gethash major-mode context-coloring-mode-hash-table))
- colorizer
- scopifier
- command)
- (cond
- ((setq colorizer (plist-get dispatch :colorizer))
- (funcall colorizer)
- (when callback (funcall callback)))
- ((setq scopifier (plist-get dispatch :scopifier))
- (context-coloring-apply-tokens (funcall scopifier))
- (when callback (funcall callback)))
- ((setq command (plist-get dispatch :command))
- (context-coloring-scopify-and-colorize command callback)))))
+ (puthash mode properties context-coloring-mode-hash-table))))
;;; Colorization
+(defvar context-coloring-colorize-hook nil
+ "Hooks to run after coloring a buffer.")
+
(defun context-coloring-colorize (&optional callback)
"Color the current buffer by function context.
Invoke CALLBACK when complete; see `context-coloring-dispatch'."
(interactive)
- (context-coloring-dispatch callback))
+ (context-coloring-dispatch
+ (lambda ()
+ (when callback (funcall callback))
+ (run-hooks 'context-coloring-colorize-hook))))
(defvar-local context-coloring-changed nil
"Indication that the buffer has changed recently, which implies
(context-coloring-kill-scopifier)
(setq context-coloring-changed t))
-(defun context-coloring-maybe-colorize ()
+(defun context-coloring-maybe-colorize (buffer)
"Colorize the current buffer if it has changed."
- (when (and (eq context-coloring-buffer (window-buffer (selected-window)))
+ (when (and (eq buffer (current-buffer))
context-coloring-changed)
(setq context-coloring-changed nil)
(context-coloring-colorize)))
"Asynchronously invoke CALLBACK with a predicate indicating
whether the current scopifier version satisfies the minimum
version number required for the current major mode."
- (let ((dispatch (gethash major-mode context-coloring-mode-hash-table)))
+ (let ((dispatch (context-coloring-get-dispatch-for-mode major-mode)))
(when dispatch
(let ((version (plist-get dispatch :version))
(command (plist-get dispatch :command)))
(let* ((properties (gethash theme context-coloring-theme-hash-table))
(colors (plist-get properties :colors))
(level -1))
- (setq context-coloring-maximum-face (- (length colors) 1))
+ ;; Only clobber when we have to.
+ (when (custom-theme-enabled-p theme)
+ (setq context-coloring-maximum-face (- (length colors) 1)))
(apply
'custom-theme-set-faces
theme
(when (and (not (eq theme 'user)) ; Called internally by `enable-theme'.
(custom-theme-p theme) ; Guard against non-existent themes.
(context-coloring-theme-p theme))
- (when (= (length custom-enabled-themes) 0)
+ (when (= (length custom-enabled-themes) 1)
;; Cache because we can't reliably figure it out in reverse.
(setq context-coloring-original-maximum-face
context-coloring-maximum-face))
"#5180b3"
"#ab75c3"
"#cd7542"
- "#dF9522"
+ "#df9522"
"#454545"))
(context-coloring-define-theme
'leuven
:recede t
:colors '("#333333"
- "#0000FF"
- "#6434A3"
- "#BA36A5"
- "#D0372D"
- "#036A07"
+ "#0000ff"
+ "#6434a3"
+ "#ba36a5"
+ "#d0372d"
+ "#036a07"
"#006699"
- "#006FE0"
+ "#006fe0"
"#808080"))
(context-coloring-define-theme
'monokai
:recede t
- :colors '("#F8F8F2"
- "#66D9EF"
- "#A1EFE4"
- "#A6E22E"
- "#E6DB74"
- "#FD971F"
- "#F92672"
- "#FD5FF0"
- "#AE81FF"))
+ :colors '("#f8f8f2"
+ "#66d9ef"
+ "#a1efe4"
+ "#a6e22e"
+ "#e6db74"
+ "#fd971f"
+ "#f92672"
+ "#fd5ff0"
+ "#ae81ff"))
(context-coloring-define-theme
'solarized
"#dc322f"
"#d33682"
"#6c71c4"
- "#69B7F0"
- "#69CABF"
- "#B4C342"
- "#DEB542"
- "#F2804F"
- "#FF6E64"
- "#F771AC"
- "#9EA0E5"))
+ "#69b7f0"
+ "#69cabf"
+ "#b4c342"
+ "#deb542"
+ "#f2804f"
+ "#ff6e64"
+ "#f771ac"
+ "#9ea0e5"))
(context-coloring-define-theme
'spacegray
:recede t
:colors '("#ffffff"
- "#89AAEB"
- "#C189EB"
+ "#89aaeb"
+ "#c189eb"
"#bf616a"
- "#DCA432"
+ "#dca432"
"#ebcb8b"
- "#B4EB89"
- "#89EBCA"))
+ "#b4eb89"
+ "#89ebca"))
(context-coloring-define-theme
'tango
(context-coloring-define-theme
'zenburn
:recede t
- :colors '("#DCDCCC"
- "#93E0E3"
- "#BFEBBF"
- "#F0DFAF"
- "#DFAF8F"
- "#CC9393"
- "#DC8CC3"
- "#94BFF3"
- "#9FC59F"
- "#D0BF8F"
- "#DCA3A3"))
+ :colors '("#dcdccc"
+ "#93e0e3"
+ "#bfebbf"
+ "#f0dfaf"
+ "#dfaf8f"
+ "#cc9393"
+ "#dc8cc3"
+ "#94bff3"
+ "#9fc59f"
+ "#d0bf8f"
+ "#dca3a3"))
-;;; Minor mode
+;;; Change detection
(defvar-local context-coloring-colorize-idle-timer nil
"The currently-running idle timer.")
Increase this if your machine is high-performing. Decrease it if
it ain't.
-Supported modes: `js-mode', `js3-mode'"
+Supported modes: `js-mode', `js3-mode', `emacs-lisp-mode'"
:group 'context-coloring)
(defun context-coloring-setup-idle-change-detection ()
"Setup idle change detection."
(add-hook
'after-change-functions 'context-coloring-change-function nil t)
+ (add-hook
+ 'kill-buffer-hook 'context-coloring-teardown-idle-change-detection nil t)
(setq context-coloring-colorize-idle-timer
(run-with-idle-timer
context-coloring-delay
t
- 'context-coloring-maybe-colorize)))
+ 'context-coloring-maybe-colorize
+ (current-buffer))))
+
+(defun context-coloring-teardown-idle-change-detection ()
+ "Teardown idle change detection."
+ (context-coloring-kill-scopifier)
+ (when context-coloring-colorize-idle-timer
+ (cancel-timer context-coloring-colorize-idle-timer))
+ (remove-hook
+ 'kill-buffer-hook 'context-coloring-teardown-idle-change-detection t)
+ (remove-hook
+ 'after-change-functions 'context-coloring-change-function t))
+
+
+;;; Built-in dispatches
+
+(context-coloring-define-dispatch
+ 'javascript-node
+ :modes '(js-mode js3-mode)
+ :executable "scopifier"
+ :command "scopifier"
+ :version "v1.1.1")
+
+(context-coloring-define-dispatch
+ 'javascript-js2
+ :modes '(js2-mode)
+ :colorizer 'context-coloring-js2-colorize
+ :setup
+ (lambda ()
+ (add-hook 'js2-post-parse-callbacks 'context-coloring-colorize nil t))
+ :teardown
+ (lambda ()
+ (remove-hook 'js2-post-parse-callbacks 'context-coloring-colorize t)))
+
+(context-coloring-define-dispatch
+ 'emacs-lisp
+ :modes '(emacs-lisp-mode)
+ :colorizer 'context-coloring-emacs-lisp-colorize
+ :setup 'context-coloring-setup-idle-change-detection
+ :teardown 'context-coloring-teardown-idle-change-detection)
+
+(defun context-coloring-dispatch (&optional callback)
+ "Determine the optimal track for scopification / coloring of
+the current buffer, then execute it.
+
+Invoke CALLBACK when complete. It is invoked synchronously for
+elisp tracks, and asynchronously for shell command tracks."
+ (let* ((dispatch (context-coloring-get-dispatch-for-mode major-mode))
+ (colorizer (plist-get dispatch :colorizer))
+ (scopifier (plist-get dispatch :scopifier))
+ (command (plist-get dispatch :command))
+ interrupted-p)
+ (cond
+ ((or colorizer scopifier)
+ (setq interrupted-p
+ (catch 'interrupted
+ (cond
+ (colorizer
+ (funcall colorizer))
+ (scopifier
+ (context-coloring-apply-tokens (funcall scopifier))))))
+ (cond
+ (interrupted-p
+ (setq context-coloring-changed t))
+ (t
+ (when callback (funcall callback)))))
+ (command
+ (context-coloring-scopify-and-colorize command callback)))))
+
+
+;;; Minor mode
;;;###autoload
(define-minor-mode context-coloring-mode
nil " Context" nil
(if (not context-coloring-mode)
(progn
- (context-coloring-kill-scopifier)
- (when context-coloring-colorize-idle-timer
- (cancel-timer context-coloring-colorize-idle-timer))
- (let ((dispatch (gethash major-mode context-coloring-mode-hash-table)))
+ (let ((dispatch (context-coloring-get-dispatch-for-mode major-mode)))
(when dispatch
(let ((command (plist-get dispatch :command))
(teardown (plist-get dispatch :teardown)))
(when command
- (remove-hook
- 'after-change-functions 'context-coloring-change-function t))
+ (context-coloring-teardown-idle-change-detection))
(when teardown
(funcall teardown)))))
(font-lock-mode)
(jit-lock-mode t))
- ;; Remember this buffer. This value should not be dynamically-bound.
- (setq context-coloring-buffer (current-buffer))
-
;; Font lock is incompatible with this mode; the converse is also true.
(font-lock-mode 0)
(jit-lock-mode nil)
+ ;; ...but we do use font-lock functions here.
+ (font-lock-set-defaults)
+
;; Safely change the valye of this function as necessary.
(make-local-variable 'font-lock-syntactic-face-function)
- (let ((dispatch (gethash major-mode context-coloring-mode-hash-table)))
+ (let ((dispatch (context-coloring-get-dispatch-for-mode major-mode)))
(if dispatch
(progn
(let ((command (plist-get dispatch :command))
(funcall setup))
;; Colorize once initially.
(when colorize-initially-p
- (context-coloring-colorize))))
+ (let ((context-coloring-parse-interruptable-p nil))
+ (context-coloring-colorize)))))
(when (null dispatch)
(message "Context coloring is not available for this major mode"))))))