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c0274f38 ER |
1 | ;;; awk-mode.el --- AWK code editing commands for Emacs |
2 | ||
f2e3589a | 3 | ;; Copyright (C) 1988, 1994, 1996, 2000, 2001, 2002, 2003, 2004, |
2f043267 | 4 | ;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
9750e079 | 5 | |
fd7fa35a | 6 | ;; Maintainer: FSF |
e9571d2a | 7 | ;; Keywords: unix, languages |
fd7fa35a | 8 | |
745bc783 JB |
9 | ;; This file is part of GNU Emacs. |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
5a9dffec | 13 | ;; the Free Software Foundation; either version 3, or (at your option) |
745bc783 JB |
14 | ;; any later version. |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
b578f267 | 22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
3a35cf56 LK |
23 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
24 | ;; Boston, MA 02110-1301, USA. | |
745bc783 | 25 | |
e41b2db1 ER |
26 | ;;; Commentary: |
27 | ||
28 | ;; Sets up C-mode with support for awk-style #-comments and a lightly | |
29 | ;; hacked syntax table. | |
30 | ||
fd7fa35a | 31 | ;;; Code: |
745bc783 | 32 | |
61b8c98e SM |
33 | (defvar awk-mode-syntax-table |
34 | (let ((st (make-syntax-table))) | |
35 | (modify-syntax-entry ?\\ "\\" st) | |
36 | (modify-syntax-entry ?\n "> " st) | |
37 | (modify-syntax-entry ?\f "> " st) | |
38 | (modify-syntax-entry ?\# "< " st) | |
39 | ;; / can delimit regexes or be a division operator. We assume that it is | |
40 | ;; more commonly used for regexes and fix the remaining cases with | |
41 | ;; `font-lock-syntactic-keywords'. | |
42 | (modify-syntax-entry ?/ "\"" st) | |
43 | (modify-syntax-entry ?* "." st) | |
44 | (modify-syntax-entry ?+ "." st) | |
45 | (modify-syntax-entry ?- "." st) | |
46 | (modify-syntax-entry ?= "." st) | |
47 | (modify-syntax-entry ?% "." st) | |
48 | (modify-syntax-entry ?< "." st) | |
49 | (modify-syntax-entry ?> "." st) | |
50 | (modify-syntax-entry ?& "." st) | |
51 | (modify-syntax-entry ?| "." st) | |
52 | (modify-syntax-entry ?_ "_" st) | |
53 | (modify-syntax-entry ?\' "\"" st) | |
54 | st) | |
55 | "Syntax table in use in `awk-mode' buffers.") | |
745bc783 | 56 | |
4e59dfb5 SM |
57 | ;; Regexps written with help from Peter Galbraith <galbraith@mixing.qc.dfo.ca>. |
58 | (defconst awk-font-lock-keywords | |
59 | (eval-when-compile | |
60 | (list | |
61 | ;; | |
62 | ;; Function names. | |
178a6a45 | 63 | '("^[ \t]*\\(function\\)\\>[ \t]*\\(\\sw+\\)?" |
4e59dfb5 SM |
64 | (1 font-lock-keyword-face) (2 font-lock-function-name-face nil t)) |
65 | ;; | |
66 | ;; Variable names. | |
178a6a45 SM |
67 | (cons (regexp-opt |
68 | '("ARGC" "ARGIND" "ARGV" "CONVFMT" "ENVIRON" "ERRNO" | |
69 | "FIELDWIDTHS" "FILENAME" "FNR" "FS" "IGNORECASE" "NF" "NR" | |
70 | "OFMT" "OFS" "ORS" "RLENGTH" "RS" "RSTART" "SUBSEP") 'words) | |
4e59dfb5 SM |
71 | 'font-lock-variable-name-face) |
72 | ;; | |
73 | ;; Keywords. | |
178a6a45 | 74 | (regexp-opt |
e14c5251 | 75 | '("BEGIN" "END" "break" "continue" "delete" "do" "exit" "else" "for" |
178a6a45 | 76 | "getline" "if" "next" "print" "printf" "return" "while") 'words) |
4e59dfb5 SM |
77 | ;; |
78 | ;; Builtins. | |
178a6a45 SM |
79 | (list (regexp-opt |
80 | '("atan2" "close" "cos" "ctime" "exp" "gsub" "index" "int" | |
81 | "length" "log" "match" "rand" "sin" "split" "sprintf" | |
82 | "sqrt" "srand" "sub" "substr" "system" "time" | |
83 | "tolower" "toupper") 'words) | |
4e59dfb5 SM |
84 | 1 'font-lock-builtin-face) |
85 | ;; | |
86 | ;; Operators. Is this too much? | |
178a6a45 | 87 | (cons (regexp-opt '("&&" "||" "<=" "<" ">=" ">" "==" "!=" "!~" "~")) |
883212ce | 88 | 'font-lock-constant-face) |
4e59dfb5 SM |
89 | )) |
90 | "Default expressions to highlight in AWK mode.") | |
91 | ||
61b8c98e SM |
92 | (require 'syntax) |
93 | ||
94 | (defconst awk-font-lock-syntactic-keywords | |
95 | ;; `/' is mostly used for /.../ regular expressions, but is also | |
96 | ;; used as a division operator. Distinguishing between the two is | |
97 | ;; a pain in the youknowwhat. | |
98 | ;; '(("\\(^\\|[<=>-+*%/!^,~(?:|&]\\)\\s-*\\(/\\)\\([^/\n\\]\\|\\\\.\\)*\\(/\\)" | |
99 | ;; (2 "\"") (4 "\""))) | |
100 | '(("[^<=>-+*%/!^,~(?:|& \t\n\f]\\s-*\\(/\\)" | |
101 | (1 (unless (nth 3 (syntax-ppss (match-beginning 1))) ".")))) | |
102 | "Syntactic keywords for `awk-mode'.") | |
103 | ||
75d6bc9b | 104 | ;; No longer autoloaded since it might clobber the autoload directive in CC Mode. |
178a6a45 | 105 | (define-derived-mode awk-mode c-mode "AWK" |
745bc783 | 106 | "Major mode for editing AWK code. |
178a6a45 SM |
107 | This is much like C mode except for the syntax of comments. Its keymap |
108 | inherits from C mode's and it has the same variables for customizing | |
745bc783 JB |
109 | indentation. It has its own abbrev table and its own syntax table. |
110 | ||
178a6a45 SM |
111 | Turning on AWK mode runs `awk-mode-hook'." |
112 | (set (make-local-variable 'paragraph-start) (concat "$\\|" page-delimiter)) | |
113 | (set (make-local-variable 'paragraph-separate) paragraph-start) | |
114 | (set (make-local-variable 'comment-start) "# ") | |
115 | (set (make-local-variable 'comment-end) "") | |
116 | (set (make-local-variable 'comment-start-skip) "#+ *") | |
61b8c98e SM |
117 | (setq font-lock-defaults '(awk-font-lock-keywords |
118 | nil nil ((?_ . "w")) nil | |
119 | (parse-sexp-lookup-properties . t) | |
120 | (font-lock-syntactic-keywords | |
121 | . awk-font-lock-syntactic-keywords)))) | |
c0274f38 | 122 | |
4e59dfb5 SM |
123 | (provide 'awk-mode) |
124 | ||
cbee283d | 125 | ;; arch-tag: 14ebc02a-b3c5-4e76-8034-6ca9ac0af0e6 |
c0274f38 | 126 | ;;; awk-mode.el ends here |