source: tools/cforall.el @ 075d862

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Last change on this file since 075d862 was 51b7345, checked in by Peter A. Buhr <pabuhr@…>, 7 years ago

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1;; cforall.el --- major mode for editing CForAll (.cf or .cfa) files
2;;                (right now, only some syntax highlighting and indentation)
3
4;; This file is *NOT* part of GNU Emacs.
5
6;; Extension to Barry Warsaw's cc-mode (plus fontification)
7
8;; To use, add this file somewhere in `load-path' and put the following lines in .emacs
9;;
10;;   (autoload 'CFA-mode "cforall" "CForAll mode" t)
11;;   (setq auto-mode-alist (append '(("\\.cfa?$" . CFA-mode))
12;;                                 auto-mode-alist))
13
14
15(provide 'CFA-mode)
16
17(require 'cc-mode)
18(require 'font-lock)
19
20(eval-when-compile
21  (require 'cc-mode)
22  (require 'font-lock)
23)
24
25(defconst c-CFA-extra-toplevel-key c-extra-toplevel-key )
26(defconst c-CFA-attrib-key (concat "\[" c-symbol-key "\\(([^)]*)\\)?\]"))
27(defconst c-CFA-class-key c-class-key )
28(defconst c-CFA-conditional-key c-conditional-key)
29(defconst c-CFA-access-key c-access-key)
30(defconst c-CFA-comment-start-regexp c-comment-start-regexp )
31
32(defvar CFA-mode-abbrev-table nil
33  "Abbreviation table used in CFA-mode buffers.")
34(define-abbrev-table 'CFA-mode-abbrev-table ())
35
36(defvar CFA-mode-map ()
37  "Keymap used in CFA-mode buffers.")
38(if CFA-mode-map
39    nil
40  (setq CFA-mode-map (c-make-inherited-keymap))
41  )
42
43(defvar CFA-mode-syntax-table nil
44  "Syntax table used in CFA-mode buffers.")
45(if CFA-mode-syntax-table
46    ()
47  (setq CFA-mode-syntax-table (make-syntax-table))
48  (c-populate-syntax-table CFA-mode-syntax-table))
49  (modify-syntax-entry ?@ "_" CFA-mode-syntax-table)
50  (modify-syntax-entry ?. "_" CFA-mode-syntax-table)
51  (modify-syntax-entry ?. "w" CFA-mode-syntax-table)
52
53(easy-menu-define c-CFA-menu CFA-mode-map "CFA Mode Commands"
54                  (c-mode-menu "CFA"))
55
56(defcustom CFA-mode-hook nil
57  "*Hook called by `CFA-mode'."
58  :type 'hook
59  :group 'c)
60
61;; Font lock support
62(defcustom CFA-font-lock-extra-types
63  '()
64  "*List of extra types to fontify in CFA mode.
65Each list item should be a regexp not containing word-delimiters.
66For example, a value of (\"System\") means the word string is treated as a type
67name.
68The value of this variable is used when Font Lock mode is turned on."
69  :type 'font-lock-extra-types-widget
70  :group 'font-lock-extra-types)
71(defconst CFA-font-lock-keywords-1 nil
72  "Subdued level highlighting for CFA mode.")
73(defconst CFA-font-lock-keywords-2 nil
74  "Medium level highlighting for CFA mode.
75See also `CFA-font-lock-extra-types'.")
76(defconst CFA-font-lock-keywords-3 nil
77  "Gaudy level highlighting for CFA mode.
78See also `CFA-font-lock-extra-types'.")
79
80
81;; Auxiliary functions (change this)
82;; (defun font-lock-match-CFA-style-declaration-item-and-skip-to-next (limit)
83;;   ;; Regexp matches after point:             word<word>::word (
84;;   ;;                                         ^^^^ ^^^^   ^^^^ ^
85;;   ;; Where the match subexpressions are:       1    3      5  6
86;;   ;;
87;;   ;; Item is delimited by (match-beginning 1) and (match-end 1).
88;;   ;; If (match-beginning 3) is non-nil, that part of the item incloses a `<>'.
89;;   ;; If (match-beginning 5) is non-nil, that part of the item follows a `::'.
90;;   ;; If (match-beginning 6) is non-nil, the item is followed by a `('.
91;;   (when (looking-at (eval-when-compile
92;;                    (concat
93;;                     ;; Skip any leading whitespace.
94;;                     "[ \t*&]*"
95;;                     ;; This is `c++-type-spec' from below.  (Hint hint!)
96;;                     "\\(\\sw+\\)"                            ; The instance?
97;;                     "\\([ \t]*<\\([^>\n]+\\)[ \t*&]*>\\)?"   ; Or template?
98;;                     "\\([ \t]*::[ \t*~]*\\(\\sw+\\)\\)*"     ; Or member?
99;;                     ;; Match any trailing parenthesis.
100;;                     "[ \t]*\\((\\)?")))
101;;     (save-match-data
102;;       (condition-case nil
103;;        (save-restriction
104;;          ;; Restrict to the end of line, currently guaranteed to be LIMIT.
105;;          (narrow-to-region (point-min) limit)
106;;          (goto-char (match-end 1))
107;;          ;; Move over any item value, etc., to the next item.
108;;          (while (not (looking-at "[ \t]*\\(\\(,\\)\\|;\\|$\\)"))
109;;            (goto-char (or (scan-sexps (point) 1) (point-max))))
110;;          (goto-char (match-end 2)))
111;;      (error t)))))
112
113
114(let* ((CFA-keywords
115        (eval-when-compile
116          (regexp-opt
117           (list
118            ;; Statements
119            "break" "catch" "choose" "context"
120            "continue" "do" "else" "fallthru" "for"  "if" "return"
121            "sizeof" "switch" "throw" "try" ;c-cfa-typeof-re
122            "while"
123            ;; Storage classes
124            "auto" "extern" "register" "static"
125            "inline" "__inline" "__inline__" "fortran"
126            ;; Typedef
127            "typedef"
128            ;; Type classes
129            "type" "dtype" "ftype"
130            ;; Type qualifiers
131            "const" "__const" "__const__" "restrict" "volatile" "__volatile"
132            "__volatile__" "lvalue" "forall"
133            ) t)))
134
135       (CFA-reserved-words '());(eval-when-compile (regexp-opt '() t)))
136
137       (CFA-type-names
138        `(mapconcat 'identity
139          (cons
140           (,@ (eval-when-compile
141                 (regexp-opt '("char" "short" "int" "long"
142                               "float" "double" "void"
143                               "unsigned"
144                               ))))
145           CFA-font-lock-extra-types)
146          "\\|"))
147       (CFA-type-names-depth `(regexp-opt-depth (,@ CFA-type-names)))
148
149;;        (CFA-ops
150;;      (eval-when-compile
151;;        (regexp-opt
152;;         '("." "+" "-" "*" "/" "%" "^" "&" "|" "~" "!" "=" "<" ">" "+=" "-="
153;;           "*=" "/=" "%=" "^=" "&=" "|=" "<<" ">>" ">>=" "<<=" "==" "!="
154;;           "<=" ">=" "&&" "||" "++" "--"))))
155
156       (CFA-ops-names
157        (eval-when-compile
158          (regexp-opt
159           (list
160            ;; diadic
161            "?+?" "\?-\?" "?*?" "?/?" "?%?" "?|?" "?&?" "?^?" "?<<?" "?>>?"
162            "?<?" "?>?" "?<=?" "?>=?" "?==?" "?!=?" "?=?" "?*=?" "?/=?"
163            "?%=?" "?+=?" "?-=?" "?<<=?" "?>>=?" "?&=?" "?^=?" "?|=?"
164            "?[?]"
165            ;; monadic
166            "+?" "-?" "*?" "!?" "~?" "++?" "?++" "--?" "?--"
167            ))))
168
169       ; defined so as to make it independent of the syntax table
170       ; (and allow users to knock themselves out figuring out new word definitions)
171       (CFA-valid-identifier "[[:alpha:]][[:alnum:]]*")
172
173       (CFA-preprocessor-directives
174        (eval-when-compile
175          (regexp-opt
176           '("define"  "elif" "else" "endif" "error" "file" "if" "ifdef"
177             "ifndef" "include" "line" "pragma" "undef"))))
178      (CFA-preprocessor-directives-depth
179        (regexp-opt-depth CFA-preprocessor-directives))
180  )
181
182 (setq CFA-font-lock-keywords-1
183  (list
184   ;; Fontify function names.
185   (list
186    (concat "\\(" CFA-ops-names "\\)")
187    '(1 font-lock-function-name-face nil t))
188
189  ;;; Preprocessor directives
190   ;; Fontify filenames in #include <...> preprocessor directives as strings.
191   '("^[ \t]*#[ \t]*\\(include\\)[ \t]*\\(<[^>\"\n]*>?\\)" 2 font-lock-string-face)
192   ;; Fontify function macro names.
193   '("^#[ \t]*define[ \t]+\\(\\sw+\\)(" 1 font-lock-function-name-face)
194;;    ;;
195;;    ;; Fontify symbol names in #elif or #if ... defined preprocessor directives.
196;;    '("^#[ \t]*\\(elif\\|if\\)\\>"
197;;      ("\\<\\(defined\\)\\>[ \t]*(?\\(\\sw+\\)?" nil nil
198;;       (1 font-lock-builtin-face) (2 font-lock-variable-name-face nil t)))
199;;    ;;
200;;    ;; Fontify otherwise as symbol names, and the preprocessor directive names.
201   (list
202     (concat "^[ \t]*#[ \t]*\\(" CFA-preprocessor-directives ;; check number of spaces surrounding pound sign
203             "\\)\\>[ \t!]*\\(\\sw+\\)?")
204     '(1 font-lock-builtin-face))
205;;     (list (+ 2 c-preprocessor-directives-depth)
206;;        'font-lock-variable-name-face nil t))
207 ))
208
209 (setq CFA-font-lock-keywords-2
210  (append CFA-font-lock-keywords-1
211   (list
212    ;; Fontify all builtin keywords (except below).
213    (concat "\\<\\(" CFA-keywords "\\)\\>")
214
215    ;; Fontify types
216    `(eval .
217      (cons (concat "\\<\\(" (,@ CFA-type-names) "\\)\\>")
218            '(1 font-lock-type-face)
219            ))
220    (list "\\<[fd]?type\\>[ \t]*\\(\\sw+\\)" '(1 font-lock-type-face))
221
222    ;; Fontify labeled labeled loop exits/goto targets.
223    (list "\\<\\(break\\|continue\\|goto\\)\\>[ \t]*\\(-?\\sw+\\)?"
224          '(1 font-lock-keyword-face)
225          '(2 font-lock-constant-face nil t)
226          )
227
228    ;; Fontify case labels.
229    '("\\<\\(case\\)\\>"
230      (1 font-lock-keyword-face)
231                                        ;("[ \t]*\\(-?\\sw+[ \t]*\\(\\(~\\)[ \t]*\\sw+\\)?\\)?"
232      ("\\(-[0-9]+\\|\\sw+\\)+";\\([ \t]*~[ \t]*\\(-[0-9]+\\|\\sw+\\)\\)?\\)"
233       ;; Return limit of search.
234       (save-excursion (skip-chars-forward "^:\n") (point))
235       nil
236       (1 font-lock-constant-face nil t))
237                                        ;'(2 font-lock-constant-face nil t)
238      )
239
240    ;; This must come after the one for keywords and targets.  (named blocks)
241    ;; xxx: gets 'default' and designated initializers
242;;     `(":" ( ,(concat "^\\([ \t]*\\(" CFA-valid-identifier "\\)[ \t]*:\\)+")
243;;          ,@(if (not (string= "default" (match-string 2)))
244;;                '((message "Check it out: (%s)" (match-data))
245;;                  (error t)
246;;                  (beginning-of-line) (end-of-line)
247;;                  (2 font-lock-constant-face))
248;;              '((2 font-lock-keyword-face)))
249;;         ))
250    `( ,(concat "^\\([ \t]*\\(" CFA-valid-identifier "\\)[ \t]*:\\)+")
251       (2 font-lock-constant-face))
252
253    ;; Fontify attributes
254    (list "!\\<\\(\\sw+\\)\\>" '(1 font-lock-builtin-face))
255
256    ;; Fontify some literals.
257    ;'("\\<\\(false\\|true\\|null\\|undefined\\)\\>" . font-lock-constant-face)
258    )))
259
260 (setq CFA-font-lock-keywords-3
261  (append CFA-font-lock-keywords-2
262   ;;
263   ;; More complicated regexps for more complete highlighting for types.
264   ;; (Note: Need to revisit the styling here.)
265   (list
266    ;;
267    ;; Fontify random types immediately followed by an item or items.
268    `(eval .
269      (list (concat "\\<\\(" (,@ CFA-type-names) "\\)\\>"
270                    "\\([ \t]*\\[[ \t]*\\]\\)*"
271                    "\\([ \t]*\\sw\\)")
272            ;; Fontify each declaration item.
273            (list 'font-lock-match-c++-style-declaration-item-and-skip-to-next
274                  ;; Start with point after all type specifiers.
275                  (list 'goto-char (list 'or
276                                         (list 'match-beginning
277                                               (+ (,@ CFA-type-names-depth) 2))
278                                         '(match-end 1)))
279                  ;; Finish with point after first type specifier.
280                  '(goto-char (match-end 1))
281                  ;; Fontify as a variable or function name.
282                  '(1 (if (match-beginning 2)
283                          font-lock-function-name-face
284                        font-lock-variable-name-face))))))
285
286    ))
287 )
288
289
290(defvar CFA-font-lock-keywords CFA-font-lock-keywords-3
291  "Default expressions to highlight in CFA mode.
292See also `CFA-font-lock-extra-types'.")
293
294
295;; (defun print-point ()
296;;   (interactive)
297;;   (message "The point is: %d" (point)))
298
299
300(defun CFA-mode ()
301  "Major mode for editing CForAll code.
302Key bindings:
303\\{CFA-mode-map}"
304  (interactive)
305  (c-initialize-cc-mode)
306  (kill-all-local-variables)
307  (set-syntax-table CFA-mode-syntax-table)
308  (setq major-mode 'CFA-mode
309        mode-name "CFA"
310        local-abbrev-table CFA-mode-abbrev-table)
311  (use-local-map CFA-mode-map)
312  (c-common-init)
313  (setq comment-start "// "
314        comment-end   ""
315        c-conditional-key c-CFA-conditional-key
316        c-comment-start-regexp c-CFA-comment-start-regexp
317        c-class-key c-CFA-class-key
318        c-extra-toplevel-key c-CFA-extra-toplevel-key
319;       c-method-key c-CFA-method-key
320        c-baseclass-key nil
321        c-recognize-knr-p nil
322        c-access-key  c-CFA-access-key
323        c-inexpr-class-key nil
324        )
325
326  ;; Font lock
327  (make-local-variable 'font-lock-defaults)
328  (setq font-lock-defaults
329        '((CFA-font-lock-keywords CFA-font-lock-keywords-1
330                                     CFA-font-lock-keywords-2 CFA-font-lock-keywords-3)
331          nil nil ((?_ . "w") (?$ . "w")) nil
332          (font-lock-mark-block-function . mark-defun)))
333
334  ; keybindings
335  ;(local-set-key [C-f3] 'print-point)
336
337  ;; hooks
338  (run-hooks 'c-mode-common-hook)
339  (run-hooks 'CFA-mode-hook)
340  (c-update-modeline))
341
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