diff options
Diffstat (limited to 'misc')
| -rw-r--r-- | misc/emacs/README | 10 | ||||
| -rw-r--r-- | misc/emacs/local.mk | 1 | ||||
| -rw-r--r-- | misc/emacs/nix-mode.el | 177 |
3 files changed, 0 insertions, 188 deletions
diff --git a/misc/emacs/README b/misc/emacs/README deleted file mode 100644 index 8c87f67d5718..000000000000 --- a/misc/emacs/README +++ /dev/null @@ -1,10 +0,0 @@ -The Nix Emacs mode supports syntax highlighting, somewhat sensible -indenting, and refilling of comments. - -To enable Nix mode in Emacs, add something like this to your ~/.emacs -file: - - (load "/nix/share/emacs/site-lisp/nix-mode.el") - -This automatically causes Nix mode to be activated for all files with -extension `.nix'. diff --git a/misc/emacs/local.mk b/misc/emacs/local.mk deleted file mode 100644 index 8e06b881bcdf..000000000000 --- a/misc/emacs/local.mk +++ /dev/null @@ -1 +0,0 @@ -$(eval $(call install-data-in,$(d)/nix-mode.el,$(datadir)/emacs/site-lisp)) diff --git a/misc/emacs/nix-mode.el b/misc/emacs/nix-mode.el deleted file mode 100644 index e129e9efe1d4..000000000000 --- a/misc/emacs/nix-mode.el +++ /dev/null @@ -1,177 +0,0 @@ -;;; nix-mode.el --- Major mode for editing Nix expressions - -;; Author: Eelco Dolstra -;; URL: https://github.com/NixOS/nix/tree/master/misc/emacs -;; Version: 1.0 - -;;; Commentary: - -;;; Code: - -(defun nix-syntax-match-antiquote (limit) - (let ((pos (next-single-char-property-change (point) 'nix-syntax-antiquote - nil limit))) - (when (and pos (> pos (point))) - (goto-char pos) - (let ((char (char-after pos))) - (pcase char - (`?$ - (forward-char 2)) - (`?} - (forward-char 1))) - (set-match-data (list pos (point))) - t)))) - -(defconst nix-font-lock-keywords - '("\\_<if\\_>" "\\_<then\\_>" "\\_<else\\_>" "\\_<assert\\_>" "\\_<with\\_>" - "\\_<let\\_>" "\\_<in\\_>" "\\_<rec\\_>" "\\_<inherit\\_>" "\\_<or\\_>" - ("\\_<true\\_>" . font-lock-builtin-face) - ("\\_<false\\_>" . font-lock-builtin-face) - ("\\_<null\\_>" . font-lock-builtin-face) - ("\\_<import\\_>" . font-lock-builtin-face) - ("\\_<derivation\\_>" . font-lock-builtin-face) - ("\\_<baseNameOf\\_>" . font-lock-builtin-face) - ("\\_<toString\\_>" . font-lock-builtin-face) - ("\\_<isNull\\_>" . font-lock-builtin-face) - ("[a-zA-Z][a-zA-Z0-9\\+-\\.]*:[a-zA-Z0-9%/\\?:@&=\\+\\$,_\\.!~\\*'-]+" - . font-lock-constant-face) - ("\\<\\([a-zA-Z_][a-zA-Z0-9_'\-\.]*\\)[ \t]*=" - (1 font-lock-variable-name-face nil nil)) - ("<[a-zA-Z0-9._\\+-]+\\(/[a-zA-Z0-9._\\+-]+\\)*>" - . font-lock-constant-face) - ("[a-zA-Z0-9._\\+-]*\\(/[a-zA-Z0-9._\\+-]+\\)+" - . font-lock-constant-face) - (nix-syntax-match-antiquote 0 font-lock-preprocessor-face t)) - "Font lock keywords for nix.") - -(defvar nix-mode-syntax-table - (let ((table (make-syntax-table))) - (modify-syntax-entry ?/ ". 14" table) - (modify-syntax-entry ?* ". 23" table) - (modify-syntax-entry ?# "< b" table) - (modify-syntax-entry ?\n "> b" table) - table) - "Syntax table for Nix mode.") - -(defun nix-syntax-propertize-escaped-antiquote () - "Set syntax properies for escaped antiquote marks." - nil) - -(defun nix-syntax-propertize-multiline-string () - "Set syntax properies for multiline string delimiters." - (let* ((start (match-beginning 0)) - (end (match-end 0)) - (context (save-excursion (save-match-data (syntax-ppss start)))) - (string-type (nth 3 context))) - (pcase string-type - (`t - ;; inside a multiline string - ;; ending multi-line string delimiter - (put-text-property (1- end) end - 'syntax-table (string-to-syntax "|"))) - (`nil - ;; beginning multi-line string delimiter - (put-text-property start (1+ start) - 'syntax-table (string-to-syntax "|")))))) - -(defun nix-syntax-propertize-antiquote () - "Set syntax properties for antiquote marks." - (let* ((start (match-beginning 0))) - (put-text-property start (1+ start) - 'syntax-table (string-to-syntax "|")) - (put-text-property start (+ start 2) - 'nix-syntax-antiquote t))) - -(defun nix-syntax-propertize-close-brace () - "Set syntax properties for close braces. -If a close brace `}' ends an antiquote, the next character begins a string." - (let* ((start (match-beginning 0)) - (end (match-end 0)) - (context (save-excursion (save-match-data (syntax-ppss start)))) - (open (nth 1 context))) - (when open ;; a corresponding open-brace was found - (let* ((antiquote (get-text-property open 'nix-syntax-antiquote))) - (when antiquote - (put-text-property (+ start 1) (+ start 2) - 'syntax-table (string-to-syntax "|")) - (put-text-property start (1+ start) - 'nix-syntax-antiquote t)))))) - -(defun nix-syntax-propertize (start end) - "Special syntax properties for Nix." - ;; search for multi-line string delimiters - (goto-char start) - (remove-text-properties start end '(syntax-table nil nix-syntax-antiquote nil)) - (funcall - (syntax-propertize-rules - ("''\\${" - (0 (ignore (nix-syntax-propertize-escaped-antiquote)))) - ("''" - (0 (ignore (nix-syntax-propertize-multiline-string)))) - ("\\${" - (0 (ignore (nix-syntax-propertize-antiquote)))) - ("}" - (0 (ignore (nix-syntax-propertize-close-brace))))) - start end)) - -(defun nix-indent-line () - "Indent current line in a Nix expression." - (interactive) - (indent-relative-maybe)) - - -;;;###autoload -(define-derived-mode nix-mode prog-mode "Nix" - "Major mode for editing Nix expressions. - -The following commands may be useful: - - '\\[newline-and-indent]' - Insert a newline and move the cursor to align with the previous - non-empty line. - - '\\[fill-paragraph]' - Refill a paragraph so that all lines are at most `fill-column' - lines long. This should do the right thing for comments beginning - with `#'. However, this command doesn't work properly yet if the - comment is adjacent to code (i.e., no intervening empty lines). - In that case, select the text to be refilled and use - `\\[fill-region]' instead. - -The hook `nix-mode-hook' is run when Nix mode is started. - -\\{nix-mode-map} -" - (set-syntax-table nix-mode-syntax-table) - - ;; Font lock support. - (setq-local font-lock-defaults '(nix-font-lock-keywords nil nil nil nil)) - - ;; Special syntax properties for Nix - (setq-local syntax-propertize-function 'nix-syntax-propertize) - - ;; Look at text properties when parsing - (setq-local parse-sexp-lookup-properties t) - - ;; Automatic indentation [C-j]. - (set (make-local-variable 'indent-line-function) 'nix-indent-line) - - ;; Indenting of comments. - (set (make-local-variable 'comment-start) "# ") - (set (make-local-variable 'comment-end) "") - (set (make-local-variable 'comment-start-skip) "\\(^\\|\\s-\\);?#+ *") - - ;; Filling of comments. - (set (make-local-variable 'adaptive-fill-mode) t) - (set (make-local-variable 'paragraph-start) "[ \t]*\\(#+[ \t]*\\)?$") - (set (make-local-variable 'paragraph-separate) paragraph-start)) - - -;;;###autoload -(progn - (add-to-list 'auto-mode-alist '("\\.nix\\'" . nix-mode)) - (add-to-list 'auto-mode-alist '("\\.nix.in\\'" . nix-mode))) - -(provide 'nix-mode) - -;;; nix-mode.el ends here |