mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-10 16:26:18 +02:00
5f1a3201ec
If keywords are matched on the start/end of words then keywords are also matched if they are surrounded by dashes or underscores. For example the keyword with is highlighted in geany-with-vte. When matching on the start/end of symbols the keyword is only highlighted if it is not part of an other identifier.
95 lines
3.1 KiB
EmacsLisp
95 lines
3.1 KiB
EmacsLisp
;;; 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:
|
|
|
|
(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))
|
|
"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-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 font-lock-defaults '(nix-font-lock-keywords nil nil nil nil))
|
|
|
|
;; 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
|