| 1 | ;;; dap16-mode.el --- mode for editing DAP-16 assembler code |
| 2 | |
| 3 | ;;; Commentary: |
| 4 | |
| 5 | ;; This mode was written by Philipp Hachtmann <hachti@hachti.de>. |
| 6 | ;; It is based on the asm mode by Eric S. Raymond <esr@snark.thyrsus.com> |
| 7 | |
| 8 | ;; This minor mode is based on text mode. It defines a private abbrev table |
| 9 | ;; that can be used to save abbrevs for assembler mnemonics. It binds just |
| 10 | ;; five keys: |
| 11 | ;; |
| 12 | ;; TAB tab to next tab stop |
| 13 | ;; : outdent preceding label, tab to tab stop |
| 14 | ;; comment char place or move comment |
| 15 | ;; dap16-comment-char specifies which character this is; |
| 16 | ;; you can use a different character in different |
| 17 | ;; Asm mode buffers. |
| 18 | ;; C-j, C-m newline and tab to tab stop |
| 19 | ;; |
| 20 | ;; Code is indented to the first tab stop level. |
| 21 | |
| 22 | ;; This mode runs two hooks: |
| 23 | ;; 1) An dap16-mode-set-comment-hook before the part of the initialization |
| 24 | ;; depending on dap16-comment-char, and |
| 25 | ;; 2) an dap16-mode-hook at the end of initialization. |
| 26 | |
| 27 | ;;; Code: |
| 28 | |
| 29 | (defgroup dap16 nil |
| 30 | "DAP-16 Assembler programming" |
| 31 | :group 'languages) |
| 32 | |
| 33 | (defcustom dap16-comment-char ?* |
| 34 | "*The comment-start character assumed by Asm mode." |
| 35 | :type 'sexp |
| 36 | :group 'asm) |
| 37 | |
| 38 | ;; XEmacs change (This is the primary difference, why was this |
| 39 | ;; feature removed? -sb) |
| 40 | (defcustom dap16-support-c-comments-p nil |
| 41 | "*Support C style comments. If t C style comments will be |
| 42 | supported. This is mainly for the benefit of font-lock." |
| 43 | :type 'boolean |
| 44 | :group 'asm) |
| 45 | |
| 46 | (defcustom dap16-mode-syntax-table nil |
| 47 | "Syntax table used while in Asm mode.") |
| 48 | |
| 49 | (defvar dap16-mode-abbrev-table nil |
| 50 | "Abbrev table used while in Asm mode.") |
| 51 | (define-abbrev-table 'dap16-mode-abbrev-table ()) |
| 52 | |
| 53 | (defvar dap16-mode-map nil |
| 54 | "Keymap for Asm mode.") |
| 55 | |
| 56 | ;;(if dap16-mode-map |
| 57 | ;; nil |
| 58 | ;; XEmacs change |
| 59 | (setq dap16-mode-map (make-sparse-keymap 'dap16-mode-map)) |
| 60 | ;; Note that the comment character isn't set up until dap16-mode is called. |
| 61 | (define-key dap16-mode-map ":" 'dap16-colon) |
| 62 | (define-key dap16-mode-map "\C-h" 'dap16-backspace) |
| 63 | (define-key dap16-mode-map "\C-l" 'dap16-halfdelim) |
| 64 | (define-key dap16-mode-map "\M-l" 'dap16-fulldelim) |
| 65 | (define-key dap16-mode-map "\C-i" 'dap16-tabulator) |
| 66 | (define-key dap16-mode-map "\C-cc" 'dap16-comment-region) |
| 67 | (define-key dap16-mode-map "\C-c\C-c" 'dap16-comment-region) |
| 68 | (define-key dap16-mode-map "\C-a" 'beginning-of-line) |
| 69 | (define-key dap16-mode-map "\C-j" 'dap16-newline) |
| 70 | (define-key dap16-mode-map "\C-m" 'dap16-newline) |
| 71 | ;; ) |
| 72 | |
| 73 | ;;(defconst dap16-font-lock-keywords |
| 74 | ;; '(("^\\(\\(\\sw\\|\\s_\\)+\\)\\>:?[ \t]*\\(\\sw+\\)?" |
| 75 | ;; (1 font-lock-function-name-face) (3 font-lock-keyword-face nil t)) |
| 76 | ;; ("^\\s +\\(\\(\\sw\\|\\s_\\)+\\)" 1 font-lock-keyword-face)) |
| 77 | |
| 78 | ;; "Additional expressions to highlight in Assembler mode.") |
| 79 | |
| 80 | ;; XEmacs change |
| 81 | ;;(put 'dap16-mode 'font-lock-defaults '(dap16-font-lock-keywords)) |
| 82 | |
| 83 | ;;(defvar dap16-code-level-empty-comment-pattern nil) |
| 84 | ;;(defvar dap16-flush-left-empty-comment-pattern nil) |
| 85 | ;;(defvar dap16-inline-empty-comment-pattern nil) |
| 86 | |
| 87 | ;;;###autoload |
| 88 | (defun dap16-mode () |
| 89 | "Major mode for editing Honeywell DAP-16 assembler code. |
| 90 | Features a private abbrev table and the following bindings: |
| 91 | |
| 92 | \\[dap16-colon]\toutdent a preceding label, tab to next tab stop. |
| 93 | \\[tab-to-tab-stop]\ttab to next tab stop. |
| 94 | \\[dap16-newline]\tnewline, then tab to next tab stop. |
| 95 | \\[dap16-comment]\tsmart placement of assembler comments. |
| 96 | |
| 97 | Turning on Asm mode runs the hook `dap16-mode-hook' at the end of initialization. |
| 98 | |
| 99 | Special commands: |
| 100 | \\{dap16-mode-map} |
| 101 | " |
| 102 | (interactive) |
| 103 | |
| 104 | (kill-all-local-variables) |
| 105 | |
| 106 | ;; The space after a comment char at the beginning of a line |
| 107 | (make-local-variable 'dap16-comment-space) |
| 108 | (setq dap16-comment-space " ") |
| 109 | |
| 110 | (setq mode-name "DAP-16") |
| 111 | (setq major-mode 'dap16-mode) |
| 112 | (setq local-abbrev-table dap16-mode-abbrev-table) |
| 113 | |
| 114 | ;; (make-local-variable 'tab-stop-list) |
| 115 | ;; (setq tab-stop-list '(6 12 30)) |
| 116 | |
| 117 | ;;(defconst dap16-font-lock-keywords |
| 118 | ;; '(("^\\(\\(\\sw\\|\\s_\\)+\\)\\>:?[ \t]*\\(\\sw+\\)?" |
| 119 | ;; (1 font-lock-function-name-face) (3 font-lock-keyword-face nil t)) |
| 120 | ;; ("^\\s +\\(\\(\\sw\\|\\s_\\)+\\)" 1 font-lock-keyword-face)) |
| 121 | |
| 122 | ;; "Additional expressions to highlight in Assembler mode.") |
| 123 | |
| 124 | |
| 125 | (setq dap16-font-lock-keywords |
| 126 | '( |
| 127 | (dap16-comment-matcher . font-lock-comment-face) |
| 128 | ;; ("\\<[0-9]+H[^ \t\n]*\\>" . font-lock-keyword-face) |
| 129 | |
| 130 | ("^\\(\\(\\sw\\|\\s_\\)+\\)\\>:?[ \t]*\\(\\sw+\\)?" |
| 131 | (1 font-lock-function-name-face) (3 font-lock-keyword-face nil t)) |
| 132 | ("^\\s +\\(\\(\\sw\\|\\s_\\)+\\)" (1 font-lock-keyword-face)) |
| 133 | ) |
| 134 | |
| 135 | |
| 136 | ) |
| 137 | |
| 138 | |
| 139 | (make-local-variable 'dap16-mode-syntax-table) |
| 140 | (setq dap16-mode-syntax-table (make-syntax-table)) |
| 141 | |
| 142 | (set-syntax-table dap16-mode-syntax-table) |
| 143 | |
| 144 | (make-local-variable 'font-lock-defaults) |
| 145 | |
| 146 | (setq font-lock-defaults '( |
| 147 | dap16-font-lock-keywords |
| 148 | nil |
| 149 | nil |
| 150 | ) |
| 151 | ) |
| 152 | |
| 153 | |
| 154 | |
| 155 | (run-hooks 'dap16-mode-set-comment-hook) |
| 156 | ;; Make our own local child of dap16-mode-map |
| 157 | ;; so we can define our own comment character. |
| 158 | |
| 159 | ;; XEmacs change |
| 160 | (let ((ourmap (make-sparse-keymap))) |
| 161 | (set-keymap-parents ourmap (list dap16-mode-map)) |
| 162 | (use-local-map ourmap)) |
| 163 | (local-set-key (vector dap16-comment-char) 'dap16-comment) |
| 164 | ;; XEmacs change |
| 165 | |
| 166 | ;; (modify-syntax-entry dap16-comment-char "<" dap16-mode-syntax-table) |
| 167 | ;; (modify-syntax-entry ?\n ">" dap16-mode-syntax-table) |
| 168 | |
| 169 | ;; (modify-syntax-entry ?a "w" dap16-mode-syntax-table) |
| 170 | |
| 171 | |
| 172 | ;; (let ((cs (regexp-quote (char-to-string dap16-comment-char)))) |
| 173 | ;; (make-local-variable 'comment-start) |
| 174 | ;; (setq comment-start (concat cs dap16-comment-space)) |
| 175 | ;; (make-local-variable 'comment-start-skip) |
| 176 | ;; (setq comment-start-skip (concat cs "+[ \t]*")) |
| 177 | ;; (setq dap16-inline-empty-comment-pattern (concat "^.+" cs "+ *$")) |
| 178 | ;; (setq dap16-code-level-empty-comment-pattern (concat "^[\t ]+" cs cs " *$")) |
| 179 | ;; (setq dap16-flush-left-empty-comment-pattern (concat "^" cs cs cs " *$")) |
| 180 | ;; ) |
| 181 | ;; (make-local-variable 'comment-end) |
| 182 | ;; (setq comment-end "") |
| 183 | (make-local-variable 'comment-column) |
| 184 | (setq comment-column 32) |
| 185 | ;; (setq fill-prefix "\t") |
| 186 | (run-hooks 'dap16-mode-hook)) |
| 187 | |
| 188 | (defun dap16-colon () |
| 189 | "Insert a colon; if it follows a label, delete the label's indentation." |
| 190 | (interactive) |
| 191 | (cond |
| 192 | ( (and (is-comment-line) (= (current-column) (length '(dap16-comment-char dap16-comment-space)))) |
| 193 | (dap16-comment-line) |
| 194 | (tab-to-tab-stop) |
| 195 | ) |
| 196 | |
| 197 | ( (and (not (is-comment-line)) (save-excursion (beginning-of-line) (looking-at "[ \t]+\\(\\sw\\|\\s_\\)+$"))) |
| 198 | (save-excursion (beginning-of-line) (delete-horizontal-space)) |
| 199 | (tab-to-tab-stop) |
| 200 | ) |
| 201 | |
| 202 | (t |
| 203 | (insert ":") |
| 204 | ) |
| 205 | ) |
| 206 | ) |
| 207 | |
| 208 | |
| 209 | ;_____________________________________________________________________________________________ |
| 210 | |
| 211 | (defun col () |
| 212 | (+ 1 (current-column)) |
| 213 | ) |
| 214 | |
| 215 | (defun fc-pos() |
| 216 | (save-excursion |
| 217 | (end-of-line) |
| 218 | (setq cstart (col)) |
| 219 | (while (> (col) 16) |
| 220 | (if (or (= (following-char) ? ) (= (following-char) ?\t) (= (following-char) ?\n)) |
| 221 | (setq cstart (col))) |
| 222 | (backward-char 1)) |
| 223 | ) |
| 224 | cstart |
| 225 | ) |
| 226 | |
| 227 | (defun dap16-comment-matcher (limit) |
| 228 | ;;(setq p1 (point)) |
| 229 | ;;(setq p2 (+ 2 (point))) |
| 230 | |
| 231 | (setq success nil) |
| 232 | (setq end-of-buffer-exit nil) |
| 233 | |
| 234 | ;; Consume Newline characters if present. |
| 235 | (while (and (< (point) limit) (= (following-char) ?\n) ) (forward-char)) |
| 236 | |
| 237 | ;; Save first location to highlight |
| 238 | (setq p1 (point)) |
| 239 | (while (and (< (point) limit) (not (and (= (following-char) ?\n) success)) (not end-of-buffer-exit)) |
| 240 | (if (or (> (col) (fc-pos)) (is-comment-line)) |
| 241 | (progn (setq p2 (+ 1 (point))) |
| 242 | (if success nil (progn (setq success t) (setq p1 (- (point) 0)))))) |
| 243 | |
| 244 | (forward-char)) |
| 245 | |
| 246 | (if success (set-match-data (list (- p1 0) (- p2 0)))) |
| 247 | success |
| 248 | ) |
| 249 | |
| 250 | |
| 251 | ;_____________________________________________________________________________________________ |
| 252 | |
| 253 | (defun dap16-line-matches (pattern &optional withcomment) |
| 254 | (save-excursion |
| 255 | (beginning-of-line) |
| 256 | (looking-at pattern))) |
| 257 | |
| 258 | (defun dap16-pop-comment-level () |
| 259 | ;; Delete an empty comment ending current line. Then set up for a new one, |
| 260 | ;; on the current line if it was all comment, otherwise above it |
| 261 | (end-of-line) |
| 262 | (delete-horizontal-space) |
| 263 | (while (= (preceding-char) dap16-comment-char) |
| 264 | (delete-backward-char 1)) |
| 265 | (delete-horizontal-space) |
| 266 | (if (bolp) |
| 267 | nil |
| 268 | (beginning-of-line) |
| 269 | (open-line 1)) |
| 270 | ) |
| 271 | |
| 272 | |
| 273 | (defun dap16-comment () |
| 274 | "Convert an empty comment to a `larger' kind, or start a new one. |
| 275 | These are the known comment classes: |
| 276 | |
| 277 | 1 -- comment to the right of the code (at the comment-column) |
| 278 | 2 -- comment on its own line, indented like code |
| 279 | 3 -- comment on its own line, beginning at the left-most column. |
| 280 | |
| 281 | Suggested usage: while writing your code, trigger dap16-comment |
| 282 | repeatedly until you are satisfied with the kind of comment." |
| 283 | (interactive) |
| 284 | |
| 285 | (setq comment-start "") |
| 286 | |
| 287 | (cond |
| 288 | |
| 289 | ;; Blank line? Then start comment. |
| 290 | ((dap16-line-matches "^[ \t]*$") |
| 291 | (delete-horizontal-space) |
| 292 | (insert dap16-comment-char dap16-comment-space) |
| 293 | ) |
| 294 | |
| 295 | ;; Nonblank line with no comment chars in it? |
| 296 | ;; Then start a comment at the current comment column |
| 297 | ((and (= (col) 1) (is-comment-line)) |
| 298 | (dap16-comment-line) |
| 299 | ) |
| 300 | |
| 301 | ;; Flush-left comment present? Just insert character. |
| 302 | ;; ((dap16-line-matches dap16-flush-left-empty-comment-pattern) |
| 303 | ;; (insert dap16-comment-char)) |
| 304 | |
| 305 | ;; Fresh comment line?? |
| 306 | ((dap16-line-matches (format "^%c%s$" dap16-comment-char dap16-comment-space)) |
| 307 | (end-of-line) |
| 308 | (delete-backward-char (length dap16-comment-space)) |
| 309 | (insert dap16-comment-char dap16-comment-char) |
| 310 | (end-of-line) |
| 311 | ) |
| 312 | |
| 313 | |
| 314 | ;; Empty code-level comment already present? |
| 315 | ;; Then start flush-left comment, on line above if this one is nonempty. |
| 316 | ;; ((dap16-line-matches dap16-code-level-empty-comment-pattern) |
| 317 | ;; (dap16-pop-comment-level) |
| 318 | ;; (insert dap16-comment-char dap16-comment-char comment-start)) |
| 319 | |
| 320 | ;; Empty comment ends line? |
| 321 | ;; Then make code-level comment, on line above if this one is nonempty. |
| 322 | ;; ((dap16-line-matches dap16-inline-empty-comment-pattern) |
| 323 | ;; (dap16-pop-comment-level) |
| 324 | ;; (tab-to-tab-stop) |
| 325 | ;; (insert dap16-comment-char comment-start)) |
| 326 | |
| 327 | ;; If all else fails, insert character |
| 328 | (t |
| 329 | (insert dap16-comment-char)) |
| 330 | |
| 331 | ) |
| 332 | |
| 333 | ) |
| 334 | |
| 335 | ;; **************************************************************************** |
| 336 | |
| 337 | |
| 338 | (defun pos-in-line () |
| 339 | (- (point) (save-excursion (beginning-of-line) (point)))) |
| 340 | |
| 341 | |
| 342 | ;; Muss verbessert werden! |
| 343 | (defun at-begin-of-line () |
| 344 | ;; (interactive) |
| 345 | ;; (setq pos (point) ) |
| 346 | ;;(save-excursion |
| 347 | ;; (beginning-of-line) |
| 348 | ;; (if (= pos (point)) t nil) |
| 349 | ;; ) |
| 350 | ;;) |
| 351 | (interactive) |
| 352 | (if (= 0 (current-column)) t nil)) |
| 353 | |
| 354 | |
| 355 | (defun is-comment-line () |
| 356 | (if (dap16-line-matches (format "^%c" dap16-comment-char)) |
| 357 | t |
| 358 | nil) |
| 359 | ) |
| 360 | |
| 361 | (defun in-comment-spacing () |
| 362 | (if (> (current-column) (length (format "%c%s" dap16-comment-char dap16-comment-space))) nil t) |
| 363 | ) |
| 364 | |
| 365 | (defun dap16-comment-line() |
| 366 | (interactive) |
| 367 | (if (is-comment-line) |
| 368 | (save-excursion |
| 369 | (beginning-of-line) |
| 370 | (delete-char 1) |
| 371 | (if (looking-at "^ ") |
| 372 | (delete-char 1) |
| 373 | ) |
| 374 | ) |
| 375 | (save-excursion (beginning-of-line) (insert dap16-comment-char dap16-comment-space)) |
| 376 | ) |
| 377 | ) |
| 378 | |
| 379 | (defun line-start() |
| 380 | (save-excursion |
| 381 | (beginning-of-line) |
| 382 | (point) |
| 383 | ) |
| 384 | ) |
| 385 | |
| 386 | |
| 387 | (defun line-end() |
| 388 | (save-excursion |
| 389 | (end-of-line) |
| 390 | (point) |
| 391 | ) |
| 392 | ) |
| 393 | |
| 394 | (defun dap16-comment-region() |
| 395 | (interactive) |
| 396 | |
| 397 | (if (not (region-active-p)) (dap16-comment-line) |
| 398 | (save-excursion |
| 399 | (goto-char (region-end)) |
| 400 | (setq lastline (line-number)) |
| 401 | (goto-char (region-beginning)) |
| 402 | (while (< (line-number) lastline) |
| 403 | (dap16-comment-line) |
| 404 | (next-line 1) |
| 405 | )))) |
| 406 | |
| 407 | |
| 408 | (defun dap16-backspace () |
| 409 | (interactive) |
| 410 | (if (and (is-comment-line) (in-comment-spacing)) |
| 411 | (delete-region (max (- (line-start) 1) 1) (point)) |
| 412 | (delete-backward-char 1) |
| 413 | ) |
| 414 | ;;delete-backward-char (length (format "%c%s" dap16-comment-char dap16-comment-space))) (tab-to-tab-stop)) |
| 415 | ;; (delete-backward-char 1) |
| 416 | ) |
| 417 | |
| 418 | (defun dap16-fulldelim () |
| 419 | (interactive) |
| 420 | (make-local-variable 'count) |
| 421 | (setq count 0) |
| 422 | (if (dap16-line-matches (format "^%c%s$" dap16-comment-char dap16-comment-space)) |
| 423 | (progn (setq count 1) |
| 424 | (end-of-line) |
| 425 | (delete-backward-char (length dap16-comment-space))) |
| 426 | ) |
| 427 | |
| 428 | (while (< count 80) |
| 429 | (insert dap16-comment-char) |
| 430 | (setq count ( 1+ count))) |
| 431 | ) |
| 432 | |
| 433 | |
| 434 | (defun dap16-halfdelim () |
| 435 | (interactive) |
| 436 | (make-local-variable 'count) |
| 437 | (setq count 0) |
| 438 | (if (dap16-line-matches (format "^%c%s$" dap16-comment-char dap16-comment-space)) |
| 439 | (progn (setq count 1) |
| 440 | (end-of-line) |
| 441 | (delete-backward-char (length dap16-comment-space))) |
| 442 | ) |
| 443 | |
| 444 | (while (< count 40) |
| 445 | (insert dap16-comment-char) |
| 446 | (setq count ( 1+ count))) |
| 447 | |
| 448 | ) |
| 449 | |
| 450 | |
| 451 | (defun dap16-tabulator () |
| 452 | (interactive) |
| 453 | (if (is-comment-line) |
| 454 | (progn |
| 455 | (setq target (prog2 (insert "\t") (current-column) (delete-backward-char 1) )) |
| 456 | (while (< (current-column) target) (insert " ")) |
| 457 | ) |
| 458 | |
| 459 | (tab-to-tab-stop) |
| 460 | ) |
| 461 | ) |
| 462 | |
| 463 | |
| 464 | (defun dap16-newline () |
| 465 | "Insert LFD + fill-prefix, to bring us back to code-indent level." |
| 466 | (interactive) |
| 467 | |
| 468 | (if (is-comment-line) |
| 469 | (progn |
| 470 | (if (at-begin-of-line) (goto-char (+ (point) 1))) |
| 471 | (insert "\n" dap16-comment-char dap16-comment-space)) |
| 472 | ;; Not comment line |
| 473 | (if (eolp) |
| 474 | (progn (delete-horizontal-space) |
| 475 | (insert "\n") |
| 476 | (tab-to-tab-stop) |
| 477 | ) |
| 478 | (insert "\n") |
| 479 | ;; (tab-to-tab-stop) |
| 480 | ) |
| 481 | ) |
| 482 | ) |
| 483 | |
| 484 | |
| 485 | ;; XEmacs addition |
| 486 | ;;;###autoload(add-to-list 'auto-mode-alist '("\\.[sS]\\'" . dap16-mode)) |
| 487 | ;;;###autoload(add-to-list 'auto-mode-alist '("\\.asm\\'" . dap16-mode)) |
| 488 | |
| 489 | ;;; dap16-mode.el ends here |