| 1 | ;;; pascal.el --- major mode for editing pascal source in Emacs |
| 2 | |
| 3 | ;; Copyright (C) 1993-2011 |
| 4 | ;; Free Software Foundation, Inc. |
| 5 | |
| 6 | ;; Author: Espen Skoglund <esk@gnu.org> |
| 7 | ;; Keywords: languages |
| 8 | |
| 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 |
| 13 | ;; the Free Software Foundation, either version 3 of the License, or |
| 14 | ;; (at your option) 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 |
| 22 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
| 23 | |
| 24 | ;;; Commentary: |
| 25 | |
| 26 | ;; USAGE |
| 27 | ;; ===== |
| 28 | |
| 29 | ;; Emacs should enter Pascal mode when you find a Pascal source file. |
| 30 | ;; When you have entered Pascal mode, you may get more info by pressing |
| 31 | ;; C-h m. You may also get online help describing various functions by: |
| 32 | ;; C-h f <Name of function you want described> |
| 33 | |
| 34 | ;; If you want to customize Pascal mode to fit you better, you may add |
| 35 | ;; these lines (the values of the variables presented here are the defaults): |
| 36 | ;; |
| 37 | ;; ;; User customization for Pascal mode |
| 38 | ;; (setq pascal-indent-level 3 |
| 39 | ;; pascal-case-indent 2 |
| 40 | ;; pascal-auto-newline nil |
| 41 | ;; pascal-tab-always-indent t |
| 42 | ;; pascal-auto-endcomments t |
| 43 | ;; pascal-auto-lineup '(all) |
| 44 | ;; pascal-toggle-completions nil |
| 45 | ;; pascal-type-keywords '("array" "file" "packed" "char" |
| 46 | ;; "integer" "real" "string" "record") |
| 47 | ;; pascal-start-keywords '("begin" "end" "function" "procedure" |
| 48 | ;; "repeat" "until" "while" "read" "readln" |
| 49 | ;; "reset" "rewrite" "write" "writeln") |
| 50 | ;; pascal-separator-keywords '("downto" "else" "mod" "div" "then")) |
| 51 | |
| 52 | ;; KNOWN BUGS / BUGREPORTS |
| 53 | ;; ======================= |
| 54 | ;; As far as I know, there are no bugs in the current version of this |
| 55 | ;; package. This may not be true however, since I never use this mode |
| 56 | ;; myself and therefore would never notice them anyway. If you do |
| 57 | ;; find any bugs, you may submit them to: esk@gnu.org as well as to |
| 58 | ;; bug-gnu-emacs@gnu.org. |
| 59 | \f |
| 60 | ;;; Code: |
| 61 | |
| 62 | (eval-when-compile (require 'cl)) |
| 63 | |
| 64 | (defgroup pascal nil |
| 65 | "Major mode for editing Pascal source in Emacs." |
| 66 | :link '(custom-group-link :tag "Font Lock Faces group" font-lock-faces) |
| 67 | :group 'languages) |
| 68 | |
| 69 | (defvar pascal-mode-abbrev-table nil |
| 70 | "Abbrev table in use in Pascal-mode buffers.") |
| 71 | (define-abbrev-table 'pascal-mode-abbrev-table ()) |
| 72 | |
| 73 | (defvar pascal-mode-map |
| 74 | (let ((map (make-sparse-keymap))) |
| 75 | (define-key map ";" 'electric-pascal-semi-or-dot) |
| 76 | (define-key map "." 'electric-pascal-semi-or-dot) |
| 77 | (define-key map ":" 'electric-pascal-colon) |
| 78 | (define-key map "=" 'electric-pascal-equal) |
| 79 | (define-key map "#" 'electric-pascal-hash) |
| 80 | (define-key map "\r" 'electric-pascal-terminate-line) |
| 81 | (define-key map "\t" 'electric-pascal-tab) |
| 82 | (define-key map "\M-\t" 'pascal-complete-word) |
| 83 | (define-key map "\M-?" 'pascal-show-completions) |
| 84 | (define-key map "\177" 'backward-delete-char-untabify) |
| 85 | (define-key map "\M-\C-h" 'pascal-mark-defun) |
| 86 | (define-key map "\C-c\C-b" 'pascal-insert-block) |
| 87 | (define-key map "\M-*" 'pascal-star-comment) |
| 88 | (define-key map "\C-c\C-c" 'pascal-comment-area) |
| 89 | (define-key map "\C-c\C-u" 'pascal-uncomment-area) |
| 90 | (define-key map "\M-\C-a" 'pascal-beg-of-defun) |
| 91 | (define-key map "\M-\C-e" 'pascal-end-of-defun) |
| 92 | (define-key map "\C-c\C-d" 'pascal-goto-defun) |
| 93 | (define-key map "\C-c\C-o" 'pascal-outline-mode) |
| 94 | ;; A command to change the whole buffer won't be used terribly |
| 95 | ;; often, so no need for a key binding. |
| 96 | ;; (define-key map "\C-cd" 'pascal-downcase-keywords) |
| 97 | ;; (define-key map "\C-cu" 'pascal-upcase-keywords) |
| 98 | ;; (define-key map "\C-cc" 'pascal-capitalize-keywords) |
| 99 | map) |
| 100 | "Keymap used in Pascal mode.") |
| 101 | |
| 102 | (defvar pascal-imenu-generic-expression |
| 103 | '((nil "^[ \t]*\\(function\\|procedure\\)[ \t\n]+\\([a-zA-Z0-9_.:]+\\)" 2)) |
| 104 | "Imenu expression for Pascal-mode. See `imenu-generic-expression'.") |
| 105 | |
| 106 | (defvar pascal-keywords |
| 107 | '("and" "array" "begin" "case" "const" "div" "do" "downto" "else" "end" |
| 108 | "file" "for" "function" "goto" "if" "in" "label" "mod" "nil" "not" "of" |
| 109 | "or" "packed" "procedure" "program" "record" "repeat" "set" "then" "to" |
| 110 | "type" "until" "var" "while" "with" |
| 111 | ;; The following are not standard in pascal, but widely used. |
| 112 | "get" "put" "input" "output" "read" "readln" "reset" "rewrite" "write" |
| 113 | "writeln")) |
| 114 | |
| 115 | ;;; |
| 116 | ;;; Regular expressions used to calculate indent, etc. |
| 117 | ;;; |
| 118 | (defconst pascal-symbol-re "\\<[a-zA-Z_][a-zA-Z_0-9.]*\\>") |
| 119 | (defconst pascal-beg-block-re "\\<\\(begin\\|case\\|record\\|repeat\\)\\>") |
| 120 | (defconst pascal-end-block-re "\\<\\(end\\|until\\)\\>") |
| 121 | (defconst pascal-declaration-re "\\<\\(const\\|label\\|type\\|var\\)\\>") |
| 122 | (defconst pascal-progbeg-re "\\<\\program\\>") |
| 123 | (defconst pascal-defun-re "\\<\\(function\\|procedure\\|program\\)\\>") |
| 124 | (defconst pascal-sub-block-re "\\<\\(if\\|else\\|for\\|while\\|with\\)\\>") |
| 125 | (defconst pascal-noindent-re "\\<\\(begin\\|end\\|until\\|else\\)\\>") |
| 126 | (defconst pascal-nosemi-re "\\<\\(begin\\|repeat\\|then\\|do\\|else\\)\\>") |
| 127 | (defconst pascal-autoindent-lines-re |
| 128 | "\\<\\(label\\|var\\|type\\|const\\|until\\|end\\|begin\\|repeat\\|else\\)\\>") |
| 129 | |
| 130 | ;;; Strings used to mark beginning and end of excluded text |
| 131 | (defconst pascal-exclude-str-start "{-----\\/----- EXCLUDED -----\\/-----") |
| 132 | (defconst pascal-exclude-str-end " -----/\\----- EXCLUDED -----/\\-----}") |
| 133 | |
| 134 | (defvar pascal-mode-syntax-table |
| 135 | (let ((st (make-syntax-table))) |
| 136 | (modify-syntax-entry ?\\ "." st) |
| 137 | (modify-syntax-entry ?\( "()1" st) |
| 138 | (modify-syntax-entry ?\) ")(4" st) |
| 139 | ;; This used to use comment-syntax `b'. But the only document I could |
| 140 | ;; find about the syntax of Pascal's comments said that (* ... } is |
| 141 | ;; a valid comment, just as { ... *) or (* ... *) or { ... }. |
| 142 | (modify-syntax-entry ?* ". 23" st) |
| 143 | (modify-syntax-entry ?{ "<" st) |
| 144 | (modify-syntax-entry ?} ">" st) |
| 145 | (modify-syntax-entry ?+ "." st) |
| 146 | (modify-syntax-entry ?- "." st) |
| 147 | (modify-syntax-entry ?= "." st) |
| 148 | (modify-syntax-entry ?% "." st) |
| 149 | (modify-syntax-entry ?< "." st) |
| 150 | (modify-syntax-entry ?> "." st) |
| 151 | (modify-syntax-entry ?& "." st) |
| 152 | (modify-syntax-entry ?| "." st) |
| 153 | (modify-syntax-entry ?_ "_" st) |
| 154 | (modify-syntax-entry ?\' "\"" st) |
| 155 | st) |
| 156 | "Syntax table in use in Pascal-mode buffers.") |
| 157 | |
| 158 | |
| 159 | |
| 160 | (defconst pascal-font-lock-keywords (purecopy |
| 161 | (list |
| 162 | '("^[ \t]*\\(function\\|pro\\(cedure\\|gram\\)\\)\\>[ \t]*\\([a-z]\\)" |
| 163 | 1 font-lock-keyword-face) |
| 164 | '("^[ \t]*\\(function\\|pro\\(cedure\\|gram\\)\\)\\>[ \t]*\\([a-z][a-z0-9_]*\\)" |
| 165 | 3 font-lock-function-name-face t) |
| 166 | ; ("type" "const" "real" "integer" "char" "boolean" "var" |
| 167 | ; "record" "array" "file") |
| 168 | (cons (concat "\\<\\(array\\|boolean\\|c\\(har\\|onst\\)\\|file\\|" |
| 169 | "integer\\|re\\(al\\|cord\\)\\|type\\|var\\)\\>") |
| 170 | 'font-lock-type-face) |
| 171 | '("\\<\\(label\\|external\\|forward\\)\\>" . font-lock-constant-face) |
| 172 | '("\\<\\([0-9]+\\)[ \t]*:" 1 font-lock-function-name-face) |
| 173 | ; ("of" "to" "for" "if" "then" "else" "case" "while" |
| 174 | ; "do" "until" "and" "or" "not" "in" "with" "repeat" "begin" "end") |
| 175 | (concat "\\<\\(" |
| 176 | "and\\|begin\\|case\\|do\\|e\\(lse\\|nd\\)\\|for\\|i[fn]\\|" |
| 177 | "not\\|o[fr]\\|repeat\\|t\\(hen\\|o\\)\\|until\\|w\\(hile\\|ith\\)" |
| 178 | "\\)\\>") |
| 179 | '("\\<\\(goto\\)\\>[ \t]*\\([0-9]+\\)?" |
| 180 | 1 font-lock-keyword-face) |
| 181 | '("\\<\\(goto\\)\\>[ \t]*\\([0-9]+\\)?" |
| 182 | 2 font-lock-keyword-face t))) |
| 183 | "Additional expressions to highlight in Pascal mode.") |
| 184 | (put 'pascal-mode 'font-lock-defaults '(pascal-font-lock-keywords nil t)) |
| 185 | |
| 186 | (defcustom pascal-indent-level 3 |
| 187 | "*Indentation of Pascal statements with respect to containing block." |
| 188 | :type 'integer |
| 189 | :group 'pascal) |
| 190 | |
| 191 | (defcustom pascal-case-indent 2 |
| 192 | "*Indentation for case statements." |
| 193 | :type 'integer |
| 194 | :group 'pascal) |
| 195 | |
| 196 | (defcustom pascal-auto-newline nil |
| 197 | "*Non-nil means automatically insert newlines in certain cases. |
| 198 | These include after semicolons and after the punctuation mark after an `end'." |
| 199 | :type 'boolean |
| 200 | :group 'pascal) |
| 201 | |
| 202 | (defcustom pascal-indent-nested-functions t |
| 203 | "*Non-nil means nested functions are indented." |
| 204 | :type 'boolean |
| 205 | :group 'pascal) |
| 206 | |
| 207 | (defcustom pascal-tab-always-indent t |
| 208 | "*Non-nil means TAB in Pascal mode should always reindent the current line. |
| 209 | If this is nil, TAB inserts a tab if it is at the end of the line |
| 210 | and follows non-whitespace text." |
| 211 | :type 'boolean |
| 212 | :group 'pascal) |
| 213 | |
| 214 | (defcustom pascal-auto-endcomments t |
| 215 | "*Non-nil means automatically insert comments after certain `end's. |
| 216 | Specifically, this is done after the ends of cases statements and functions. |
| 217 | The name of the function or case is included between the braces." |
| 218 | :type 'boolean |
| 219 | :group 'pascal) |
| 220 | |
| 221 | (defcustom pascal-auto-lineup '(all) |
| 222 | "*List of contexts where auto lineup of :'s or ='s should be done. |
| 223 | Elements can be of type: 'paramlist', 'declaration' or 'case', which will |
| 224 | do auto lineup in parameterlist, declarations or case-statements |
| 225 | respectively. The word 'all' will do all lineups. '(case paramlist) for |
| 226 | instance will do lineup in case-statements and parameterlist, while '(all) |
| 227 | will do all lineups." |
| 228 | :type '(set :extra-offset 8 |
| 229 | (const :tag "Everything" all) |
| 230 | (const :tag "Parameter lists" paramlist) |
| 231 | (const :tag "Decalrations" declaration) |
| 232 | (const :tag "Case statements" case)) |
| 233 | :group 'pascal) |
| 234 | |
| 235 | (defcustom pascal-toggle-completions nil |
| 236 | "*Non-nil means \\<pascal-mode-map>\\[pascal-complete-word] should try all possible completions one by one. |
| 237 | Repeated use of \\[pascal-complete-word] will show you all of them. |
| 238 | Normally, when there is more than one possible completion, |
| 239 | it displays a list of all possible completions." |
| 240 | :type 'boolean |
| 241 | :group 'pascal) |
| 242 | |
| 243 | (defcustom pascal-type-keywords |
| 244 | '("array" "file" "packed" "char" "integer" "real" "string" "record") |
| 245 | "*Keywords for types used when completing a word in a declaration or parmlist. |
| 246 | These include integer, real, char, etc. |
| 247 | The types defined within the Pascal program |
| 248 | are handled in another way, and should not be added to this list." |
| 249 | :type '(repeat (string :tag "Keyword")) |
| 250 | :group 'pascal) |
| 251 | |
| 252 | (defcustom pascal-start-keywords |
| 253 | '("begin" "end" "function" "procedure" "repeat" "until" "while" |
| 254 | "read" "readln" "reset" "rewrite" "write" "writeln") |
| 255 | "*Keywords to complete when standing at the first word of a statement. |
| 256 | These are keywords such as begin, repeat, until, readln. |
| 257 | The procedures and variables defined within the Pascal program |
| 258 | are handled in another way, and should not be added to this list." |
| 259 | :type '(repeat (string :tag "Keyword")) |
| 260 | :group 'pascal) |
| 261 | |
| 262 | (defcustom pascal-separator-keywords |
| 263 | '("downto" "else" "mod" "div" "then") |
| 264 | "*Keywords to complete when NOT standing at the first word of a statement. |
| 265 | These are keywords such as downto, else, mod, then. |
| 266 | Variables and function names defined within the Pascal program |
| 267 | are handled in another way, and should not be added to this list." |
| 268 | :type '(repeat (string :tag "Keyword")) |
| 269 | :group 'pascal) |
| 270 | |
| 271 | |
| 272 | ;;; |
| 273 | ;;; Macros |
| 274 | ;;; |
| 275 | |
| 276 | (defun pascal-declaration-end () |
| 277 | (let ((nest 1)) |
| 278 | (while (and (> nest 0) |
| 279 | (re-search-forward |
| 280 | "[:=]\\|\\(\\<record\\>\\)\\|\\(\\<end\\>\\)" |
| 281 | (point-at-eol 2) t)) |
| 282 | (cond ((match-beginning 1) (setq nest (1+ nest))) |
| 283 | ((match-beginning 2) (setq nest (1- nest))) |
| 284 | ((looking-at "[^(\n]+)") (setq nest 0)))))) |
| 285 | |
| 286 | |
| 287 | (defun pascal-declaration-beg () |
| 288 | (let ((nest 1)) |
| 289 | (while (and (> nest 0) |
| 290 | (re-search-backward "[:=]\\|\\<\\(type\\|var\\|label\\|const\\)\\>\\|\\(\\<record\\>\\)\\|\\(\\<end\\>\\)" (point-at-bol 0) t)) |
| 291 | (cond ((match-beginning 1) (setq nest 0)) |
| 292 | ((match-beginning 2) (setq nest (1- nest))) |
| 293 | ((match-beginning 3) (setq nest (1+ nest))))) |
| 294 | (= nest 0))) |
| 295 | |
| 296 | |
| 297 | (defsubst pascal-within-string () |
| 298 | (nth 3 (parse-partial-sexp (point-at-bol) (point)))) |
| 299 | |
| 300 | |
| 301 | ;;;###autoload |
| 302 | (define-derived-mode pascal-mode prog-mode "Pascal" |
| 303 | "Major mode for editing Pascal code. \\<pascal-mode-map> |
| 304 | TAB indents for Pascal code. Delete converts tabs to spaces as it moves back. |
| 305 | |
| 306 | \\[pascal-complete-word] completes the word around current point with respect \ |
| 307 | to position in code |
| 308 | \\[pascal-show-completions] shows all possible completions at this point. |
| 309 | |
| 310 | Other useful functions are: |
| 311 | |
| 312 | \\[pascal-mark-defun]\t- Mark function. |
| 313 | \\[pascal-insert-block]\t- insert begin ... end; |
| 314 | \\[pascal-star-comment]\t- insert (* ... *) |
| 315 | \\[pascal-comment-area]\t- Put marked area in a comment, fixing nested comments. |
| 316 | \\[pascal-uncomment-area]\t- Uncomment an area commented with \ |
| 317 | \\[pascal-comment-area]. |
| 318 | \\[pascal-beg-of-defun]\t- Move to beginning of current function. |
| 319 | \\[pascal-end-of-defun]\t- Move to end of current function. |
| 320 | \\[pascal-goto-defun]\t- Goto function prompted for in the minibuffer. |
| 321 | \\[pascal-outline-mode]\t- Enter `pascal-outline-mode'. |
| 322 | |
| 323 | Variables controlling indentation/edit style: |
| 324 | |
| 325 | `pascal-indent-level' (default 3) |
| 326 | Indentation of Pascal statements with respect to containing block. |
| 327 | `pascal-case-indent' (default 2) |
| 328 | Indentation for case statements. |
| 329 | `pascal-auto-newline' (default nil) |
| 330 | Non-nil means automatically newline after semicolons and the punctuation |
| 331 | mark after an end. |
| 332 | `pascal-indent-nested-functions' (default t) |
| 333 | Non-nil means nested functions are indented. |
| 334 | `pascal-tab-always-indent' (default t) |
| 335 | Non-nil means TAB in Pascal mode should always reindent the current line, |
| 336 | regardless of where in the line point is when the TAB command is used. |
| 337 | `pascal-auto-endcomments' (default t) |
| 338 | Non-nil means a comment { ... } is set after the ends which ends cases and |
| 339 | functions. The name of the function or case will be set between the braces. |
| 340 | `pascal-auto-lineup' (default t) |
| 341 | List of contexts where auto lineup of :'s or ='s should be done. |
| 342 | |
| 343 | See also the user variables `pascal-type-keywords', `pascal-start-keywords' and |
| 344 | `pascal-separator-keywords'. |
| 345 | |
| 346 | Turning on Pascal mode calls the value of the variable pascal-mode-hook with |
| 347 | no args, if that value is non-nil." |
| 348 | (set (make-local-variable 'local-abbrev-table) pascal-mode-abbrev-table) |
| 349 | (set (make-local-variable 'indent-line-function) 'pascal-indent-line) |
| 350 | (set (make-local-variable 'comment-indent-function) 'pascal-indent-comment) |
| 351 | (set (make-local-variable 'parse-sexp-ignore-comments) nil) |
| 352 | (set (make-local-variable 'blink-matching-paren-dont-ignore-comments) t) |
| 353 | (set (make-local-variable 'case-fold-search) t) |
| 354 | (set (make-local-variable 'comment-start) "{") |
| 355 | (set (make-local-variable 'comment-start-skip) "(\\*+ *\\|{ *") |
| 356 | (set (make-local-variable 'comment-end) "}") |
| 357 | ;; Font lock support |
| 358 | (set (make-local-variable 'font-lock-defaults) |
| 359 | '(pascal-font-lock-keywords nil t)) |
| 360 | ;; Imenu support |
| 361 | (set (make-local-variable 'imenu-generic-expression) |
| 362 | pascal-imenu-generic-expression) |
| 363 | (set (make-local-variable 'imenu-case-fold-search) t) |
| 364 | ;; Pascal-mode's own hide/show support. |
| 365 | (add-to-invisibility-spec '(pascal . t))) |
| 366 | |
| 367 | \f |
| 368 | |
| 369 | ;;; |
| 370 | ;;; Electric functions |
| 371 | ;;; |
| 372 | (defun electric-pascal-terminate-line () |
| 373 | "Terminate line and indent next line." |
| 374 | (interactive) |
| 375 | ;; First, check if current line should be indented |
| 376 | (save-excursion |
| 377 | (beginning-of-line) |
| 378 | (skip-chars-forward " \t") |
| 379 | (if (looking-at pascal-autoindent-lines-re) |
| 380 | (pascal-indent-line))) |
| 381 | (delete-horizontal-space) ; Removes trailing whitespaces |
| 382 | (newline) |
| 383 | ;; Indent next line |
| 384 | (pascal-indent-line) |
| 385 | ;; Maybe we should set some endcomments |
| 386 | (if pascal-auto-endcomments |
| 387 | (pascal-set-auto-comments)) |
| 388 | ;; Check if we shall indent inside comment |
| 389 | (let ((setstar nil)) |
| 390 | (save-excursion |
| 391 | (forward-line -1) |
| 392 | (skip-chars-forward " \t") |
| 393 | (cond ((looking-at "\\*[ \t]+)") |
| 394 | ;; Delete region between `*' and `)' if there is only whitespaces. |
| 395 | (forward-char 1) |
| 396 | (delete-horizontal-space)) |
| 397 | ((and (looking-at "(\\*\\|\\*[^)]") |
| 398 | (not (save-excursion (search-forward "*)" (point-at-eol) t)))) |
| 399 | (setq setstar t)))) |
| 400 | ;; If last line was a star comment line then this one shall be too. |
| 401 | (if (null setstar) |
| 402 | (pascal-indent-line) |
| 403 | (insert "* ")))) |
| 404 | |
| 405 | |
| 406 | (defun electric-pascal-semi-or-dot () |
| 407 | "Insert `;' or `.' character and reindent the line." |
| 408 | (interactive) |
| 409 | (insert last-command-event) |
| 410 | (save-excursion |
| 411 | (beginning-of-line) |
| 412 | (pascal-indent-line)) |
| 413 | (if pascal-auto-newline |
| 414 | (electric-pascal-terminate-line))) |
| 415 | |
| 416 | (defun electric-pascal-colon () |
| 417 | "Insert `:' and do all indentions except line indent on this line." |
| 418 | (interactive) |
| 419 | (insert last-command-event) |
| 420 | ;; Do nothing if within string. |
| 421 | (if (pascal-within-string) |
| 422 | () |
| 423 | (save-excursion |
| 424 | (beginning-of-line) |
| 425 | (pascal-indent-line)) |
| 426 | (let ((pascal-tab-always-indent nil)) |
| 427 | (pascal-indent-command)))) |
| 428 | |
| 429 | (defun electric-pascal-equal () |
| 430 | "Insert `=', and do indention if within type declaration." |
| 431 | (interactive) |
| 432 | (insert last-command-event) |
| 433 | (if (eq (car (pascal-calculate-indent)) 'declaration) |
| 434 | (let ((pascal-tab-always-indent nil)) |
| 435 | (pascal-indent-command)))) |
| 436 | |
| 437 | (defun electric-pascal-hash () |
| 438 | "Insert `#', and indent to column 0 if this is a CPP directive." |
| 439 | (interactive) |
| 440 | (insert last-command-event) |
| 441 | (if (save-excursion (beginning-of-line) (looking-at "^[ \t]*#")) |
| 442 | (save-excursion (beginning-of-line) |
| 443 | (delete-horizontal-space)))) |
| 444 | |
| 445 | (defun electric-pascal-tab () |
| 446 | "Function called when TAB is pressed in Pascal mode." |
| 447 | (interactive) |
| 448 | ;; Do nothing if within a string or in a CPP directive. |
| 449 | (if (or (pascal-within-string) |
| 450 | (and (not (bolp)) |
| 451 | (save-excursion (beginning-of-line) (eq (following-char) ?#)))) |
| 452 | (insert "\t") |
| 453 | ;; If pascal-tab-always-indent, indent the beginning of the line. |
| 454 | (if pascal-tab-always-indent |
| 455 | (save-excursion |
| 456 | (beginning-of-line) |
| 457 | (pascal-indent-line)) |
| 458 | (if (save-excursion |
| 459 | (skip-chars-backward " \t") |
| 460 | (bolp)) |
| 461 | (pascal-indent-line) |
| 462 | (insert "\t"))) |
| 463 | (pascal-indent-command))) |
| 464 | |
| 465 | \f |
| 466 | |
| 467 | ;;; |
| 468 | ;;; Interactive functions |
| 469 | ;;; |
| 470 | (defun pascal-insert-block () |
| 471 | "Insert Pascal begin ... end; block in the code with right indentation." |
| 472 | (interactive) |
| 473 | (insert "begin") |
| 474 | (electric-pascal-terminate-line) |
| 475 | (save-excursion |
| 476 | (newline) |
| 477 | (insert "end;") |
| 478 | (beginning-of-line) |
| 479 | (pascal-indent-line))) |
| 480 | |
| 481 | (defun pascal-star-comment () |
| 482 | "Insert Pascal star comment at point." |
| 483 | (interactive) |
| 484 | (pascal-indent-line) |
| 485 | (insert "(*") |
| 486 | (electric-pascal-terminate-line) |
| 487 | (save-excursion |
| 488 | (electric-pascal-terminate-line) |
| 489 | (delete-horizontal-space) |
| 490 | (insert ")")) |
| 491 | (insert " ")) |
| 492 | |
| 493 | (defun pascal-mark-defun () |
| 494 | "Mark the current pascal function (or procedure). |
| 495 | This puts the mark at the end, and point at the beginning." |
| 496 | (interactive) |
| 497 | (push-mark (point)) |
| 498 | (pascal-end-of-defun) |
| 499 | (push-mark (point)) |
| 500 | (pascal-beg-of-defun) |
| 501 | (when (featurep 'xemacs) |
| 502 | (zmacs-activate-region))) |
| 503 | |
| 504 | (defun pascal-comment-area (start end) |
| 505 | "Put the region into a Pascal comment. |
| 506 | The comments that are in this area are \"deformed\": |
| 507 | `*)' becomes `!(*' and `}' becomes `!{'. |
| 508 | These deformed comments are returned to normal if you use |
| 509 | \\[pascal-uncomment-area] to undo the commenting. |
| 510 | |
| 511 | The commented area starts with `pascal-exclude-str-start', and ends with |
| 512 | `pascal-include-str-end'. But if you change these variables, |
| 513 | \\[pascal-uncomment-area] won't recognize the comments." |
| 514 | (interactive "r") |
| 515 | (save-excursion |
| 516 | ;; Insert start and endcomments |
| 517 | (goto-char end) |
| 518 | (if (and (save-excursion (skip-chars-forward " \t") (eolp)) |
| 519 | (not (save-excursion (skip-chars-backward " \t") (bolp)))) |
| 520 | (forward-line 1) |
| 521 | (beginning-of-line)) |
| 522 | (insert pascal-exclude-str-end) |
| 523 | (setq end (point)) |
| 524 | (newline) |
| 525 | (goto-char start) |
| 526 | (beginning-of-line) |
| 527 | (insert pascal-exclude-str-start) |
| 528 | (newline) |
| 529 | ;; Replace end-comments within commented area |
| 530 | (goto-char end) |
| 531 | (save-excursion |
| 532 | (while (re-search-backward "\\*)" start t) |
| 533 | (replace-match "!(*" t t))) |
| 534 | (save-excursion |
| 535 | (while (re-search-backward "}" start t) |
| 536 | (replace-match "!{" t t))))) |
| 537 | |
| 538 | (defun pascal-uncomment-area () |
| 539 | "Uncomment a commented area; change deformed comments back to normal. |
| 540 | This command does nothing if the pointer is not in a commented |
| 541 | area. See also `pascal-comment-area'." |
| 542 | (interactive) |
| 543 | (save-excursion |
| 544 | (let ((start (point)) |
| 545 | (end (point))) |
| 546 | ;; Find the boundaries of the comment |
| 547 | (save-excursion |
| 548 | (setq start (progn (search-backward pascal-exclude-str-start nil t) |
| 549 | (point))) |
| 550 | (setq end (progn (search-forward pascal-exclude-str-end nil t) |
| 551 | (point)))) |
| 552 | ;; Check if we're really inside a comment |
| 553 | (if (or (equal start (point)) (<= end (point))) |
| 554 | (message "Not standing within commented area.") |
| 555 | (progn |
| 556 | ;; Remove endcomment |
| 557 | (goto-char end) |
| 558 | (beginning-of-line) |
| 559 | (let ((pos (point))) |
| 560 | (end-of-line) |
| 561 | (delete-region pos (1+ (point)))) |
| 562 | ;; Change comments back to normal |
| 563 | (save-excursion |
| 564 | (while (re-search-backward "!{" start t) |
| 565 | (replace-match "}" t t))) |
| 566 | (save-excursion |
| 567 | (while (re-search-backward "!(\\*" start t) |
| 568 | (replace-match "*)" t t))) |
| 569 | ;; Remove startcomment |
| 570 | (goto-char start) |
| 571 | (beginning-of-line) |
| 572 | (let ((pos (point))) |
| 573 | (end-of-line) |
| 574 | (delete-region pos (1+ (point))))))))) |
| 575 | |
| 576 | (defun pascal-beg-of-defun () |
| 577 | "Move backward to the beginning of the current function or procedure." |
| 578 | (interactive) |
| 579 | (catch 'found |
| 580 | (if (not (looking-at (concat "\\s \\|\\s)\\|" pascal-defun-re))) |
| 581 | (forward-sexp 1)) |
| 582 | (let ((nest 0) (max -1) (func 0) |
| 583 | (reg (concat pascal-beg-block-re "\\|" |
| 584 | pascal-end-block-re "\\|" |
| 585 | pascal-defun-re))) |
| 586 | (while (re-search-backward reg nil 'move) |
| 587 | (cond ((let ((state (save-excursion |
| 588 | (parse-partial-sexp (point-min) (point))))) |
| 589 | (or (nth 3 state) (nth 4 state))) ; Inside string or comment |
| 590 | ()) |
| 591 | ((match-end 1) ; begin|case|record|repeat |
| 592 | (if (and (looking-at "\\<record\\>") (>= max 0)) |
| 593 | (setq func (1- func))) |
| 594 | (setq nest (1+ nest) |
| 595 | max (max nest max))) |
| 596 | ((match-end 2) ; end|until |
| 597 | (if (and (= nest max) (>= max 0)) |
| 598 | (setq func (1+ func))) |
| 599 | (setq nest (1- nest))) |
| 600 | ((match-end 3) ; function|procedure |
| 601 | (if (= 0 func) |
| 602 | (throw 'found t) |
| 603 | (setq func (1- func))))))) |
| 604 | nil)) |
| 605 | |
| 606 | (defun pascal-end-of-defun () |
| 607 | "Move forward to the end of the current function or procedure." |
| 608 | (interactive) |
| 609 | (if (looking-at "\\s ") |
| 610 | (forward-sexp 1)) |
| 611 | (if (not (looking-at pascal-defun-re)) |
| 612 | (pascal-beg-of-defun)) |
| 613 | (forward-char 1) |
| 614 | (let ((nest 0) (func 1) |
| 615 | (reg (concat pascal-beg-block-re "\\|" |
| 616 | pascal-end-block-re "\\|" |
| 617 | pascal-defun-re))) |
| 618 | (while (and (/= func 0) |
| 619 | (re-search-forward reg nil 'move)) |
| 620 | (cond ((let ((state (save-excursion |
| 621 | (parse-partial-sexp (point-min) (point))))) |
| 622 | (or (nth 3 state) (nth 4 state))) ; Inside string or comment |
| 623 | ()) |
| 624 | ((match-end 1) |
| 625 | (setq nest (1+ nest)) |
| 626 | (if (save-excursion |
| 627 | (goto-char (match-beginning 0)) |
| 628 | (looking-at "\\<record\\>")) |
| 629 | (setq func (1+ func)))) |
| 630 | ((match-end 2) |
| 631 | (setq nest (1- nest)) |
| 632 | (if (= nest 0) |
| 633 | (setq func (1- func)))) |
| 634 | ((match-end 3) |
| 635 | (setq func (1+ func)))))) |
| 636 | (forward-line 1)) |
| 637 | |
| 638 | (defun pascal-end-of-statement () |
| 639 | "Move forward to end of current statement." |
| 640 | (interactive) |
| 641 | (let ((parse-sexp-ignore-comments t) |
| 642 | (nest 0) pos |
| 643 | (regexp (concat "\\(" pascal-beg-block-re "\\)\\|\\(" |
| 644 | pascal-end-block-re "\\)"))) |
| 645 | (if (not (looking-at "[ \t\n]")) (forward-sexp -1)) |
| 646 | (or (looking-at pascal-beg-block-re) |
| 647 | ;; Skip to end of statement |
| 648 | (setq pos (catch 'found |
| 649 | (while t |
| 650 | (forward-sexp 1) |
| 651 | (cond ((looking-at "[ \t]*;") |
| 652 | (skip-chars-forward "^;") |
| 653 | (forward-char 1) |
| 654 | (throw 'found (point))) |
| 655 | ((save-excursion |
| 656 | (forward-sexp -1) |
| 657 | (looking-at pascal-beg-block-re)) |
| 658 | (goto-char (match-beginning 0)) |
| 659 | (throw 'found nil)) |
| 660 | ((eobp) |
| 661 | (throw 'found (point)))))))) |
| 662 | (if (not pos) |
| 663 | ;; Skip a whole block |
| 664 | (catch 'found |
| 665 | (while t |
| 666 | (re-search-forward regexp nil 'move) |
| 667 | (setq nest (if (match-end 1) |
| 668 | (1+ nest) |
| 669 | (1- nest))) |
| 670 | (cond ((eobp) |
| 671 | (throw 'found (point))) |
| 672 | ((= 0 nest) |
| 673 | (throw 'found (pascal-end-of-statement)))))) |
| 674 | pos))) |
| 675 | |
| 676 | (defun pascal-downcase-keywords () |
| 677 | "Downcase all Pascal keywords in the buffer." |
| 678 | (interactive) |
| 679 | (pascal-change-keywords 'downcase-word)) |
| 680 | |
| 681 | (defun pascal-upcase-keywords () |
| 682 | "Upcase all Pascal keywords in the buffer." |
| 683 | (interactive) |
| 684 | (pascal-change-keywords 'upcase-word)) |
| 685 | |
| 686 | (defun pascal-capitalize-keywords () |
| 687 | "Capitalize all Pascal keywords in the buffer." |
| 688 | (interactive) |
| 689 | (pascal-change-keywords 'capitalize-word)) |
| 690 | |
| 691 | ;; Change the keywords according to argument. |
| 692 | (defun pascal-change-keywords (change-word) |
| 693 | (save-excursion |
| 694 | (let ((keyword-re (concat "\\<\\(" |
| 695 | (mapconcat 'identity pascal-keywords "\\|") |
| 696 | "\\)\\>"))) |
| 697 | (goto-char (point-min)) |
| 698 | (while (re-search-forward keyword-re nil t) |
| 699 | (funcall change-word -1))))) |
| 700 | |
| 701 | \f |
| 702 | |
| 703 | ;;; |
| 704 | ;;; Other functions |
| 705 | ;;; |
| 706 | (defun pascal-set-auto-comments () |
| 707 | "Insert `{ case }' or `{ NAME }' on this line if appropriate. |
| 708 | Insert `{ case }' if there is an `end' on the line which |
| 709 | ends a case block. Insert `{ NAME }' if there is an `end' |
| 710 | on the line which ends a function or procedure named NAME." |
| 711 | (save-excursion |
| 712 | (forward-line -1) |
| 713 | (skip-chars-forward " \t") |
| 714 | (if (and (looking-at "\\<end;") |
| 715 | (not (save-excursion |
| 716 | (end-of-line) |
| 717 | (search-backward "{" (point-at-bol) t)))) |
| 718 | (let ((type (car (pascal-calculate-indent)))) |
| 719 | (if (eq type 'declaration) |
| 720 | () |
| 721 | (if (eq type 'case) |
| 722 | ;; This is a case block |
| 723 | (progn |
| 724 | (end-of-line) |
| 725 | (delete-horizontal-space) |
| 726 | (insert " { case }")) |
| 727 | (let ((nest 1)) |
| 728 | ;; Check if this is the end of a function |
| 729 | (save-excursion |
| 730 | (while (not (or (looking-at pascal-defun-re) (bobp))) |
| 731 | (backward-sexp 1) |
| 732 | (cond ((looking-at pascal-beg-block-re) |
| 733 | (setq nest (1- nest))) |
| 734 | ((looking-at pascal-end-block-re) |
| 735 | (setq nest (1+ nest))))) |
| 736 | (if (bobp) |
| 737 | (setq nest 1))) |
| 738 | (if (zerop nest) |
| 739 | (progn |
| 740 | (end-of-line) |
| 741 | (delete-horizontal-space) |
| 742 | (insert " { ") |
| 743 | (let (b e) |
| 744 | (save-excursion |
| 745 | (setq b (progn (pascal-beg-of-defun) |
| 746 | (skip-chars-forward "^ \t") |
| 747 | (skip-chars-forward " \t") |
| 748 | (point)) |
| 749 | e (progn (skip-chars-forward "a-zA-Z0-9_") |
| 750 | (point)))) |
| 751 | (insert-buffer-substring (current-buffer) b e)) |
| 752 | (insert " }")))))))))) |
| 753 | |
| 754 | \f |
| 755 | |
| 756 | ;;; |
| 757 | ;;; Indentation |
| 758 | ;;; |
| 759 | (defconst pascal-indent-alist |
| 760 | '((block . (+ ind pascal-indent-level)) |
| 761 | (case . (+ ind pascal-case-indent)) |
| 762 | (caseblock . ind) (cpp . 0) |
| 763 | (declaration . (+ ind pascal-indent-level)) |
| 764 | (paramlist . (pascal-indent-paramlist t)) |
| 765 | (comment . (pascal-indent-comment)) |
| 766 | (defun . ind) (contexp . ind) |
| 767 | (unknown . ind) (string . 0) (progbeg . 0))) |
| 768 | |
| 769 | (defun pascal-indent-command () |
| 770 | "Indent for special part of code." |
| 771 | (let* ((indent-str (pascal-calculate-indent)) |
| 772 | (type (car indent-str))) |
| 773 | (cond ((and (eq type 'paramlist) |
| 774 | (or (memq 'all pascal-auto-lineup) |
| 775 | (memq 'paramlist pascal-auto-lineup))) |
| 776 | (pascal-indent-paramlist) |
| 777 | (pascal-indent-paramlist)) |
| 778 | ((and (eq type 'declaration) |
| 779 | (or (memq 'all pascal-auto-lineup) |
| 780 | (memq 'declaration pascal-auto-lineup))) |
| 781 | (pascal-indent-declaration)) |
| 782 | ((and (eq type 'case) (not (looking-at "^[ \t]*$")) |
| 783 | (or (memq 'all pascal-auto-lineup) |
| 784 | (memq 'case pascal-auto-lineup))) |
| 785 | (pascal-indent-case))) |
| 786 | (if (looking-at "[ \t]+$") |
| 787 | (skip-chars-forward " \t")))) |
| 788 | |
| 789 | (defun pascal-indent-line () |
| 790 | "Indent current line as a Pascal statement." |
| 791 | (let* ((indent-str (pascal-calculate-indent)) |
| 792 | (type (car indent-str)) |
| 793 | (ind (car (cdr indent-str)))) |
| 794 | ;; Labels should not be indented. |
| 795 | (if (and (looking-at "^[0-9a-zA-Z]+[ \t]*:[^=]") |
| 796 | (not (eq type 'declaration))) |
| 797 | (search-forward ":" nil t)) |
| 798 | (delete-horizontal-space) |
| 799 | (cond (; Some things should not be indented |
| 800 | (or (and (eq type 'declaration) (looking-at pascal-declaration-re)) |
| 801 | (eq type 'cpp)) |
| 802 | ()) |
| 803 | (; Other things should have no extra indent |
| 804 | (looking-at pascal-noindent-re) |
| 805 | (indent-to ind)) |
| 806 | (; Nested functions should be indented |
| 807 | (looking-at pascal-defun-re) |
| 808 | (if (and pascal-indent-nested-functions |
| 809 | (eq type 'defun)) |
| 810 | (indent-to (+ ind pascal-indent-level)) |
| 811 | (indent-to ind))) |
| 812 | (; But most lines are treated this way |
| 813 | (indent-to (eval (cdr (assoc type pascal-indent-alist)))) |
| 814 | )))) |
| 815 | |
| 816 | (defun pascal-calculate-indent () |
| 817 | "Calculate the indent of the current Pascal line. |
| 818 | Return a list of two elements: (INDENT-TYPE INDENT-LEVEL)." |
| 819 | (save-excursion |
| 820 | (let* ((parse-sexp-ignore-comments t) |
| 821 | (oldpos (point)) |
| 822 | (state (save-excursion (parse-partial-sexp (point-min) (point)))) |
| 823 | (nest 0) (par 0) (complete (looking-at "[ \t]*end\\>")) |
| 824 | (elsed (looking-at "[ \t]*else\\>")) (funccnt 0) |
| 825 | (did-func (looking-at "[ \t]*\\(procedure\\|function\\)\\>")) |
| 826 | (type (catch 'nesting |
| 827 | ;; Check if inside a string, comment or parenthesis |
| 828 | (cond ((nth 3 state) (throw 'nesting 'string)) |
| 829 | ((nth 4 state) (throw 'nesting 'comment)) |
| 830 | ((> (car state) 0) |
| 831 | (goto-char (scan-lists (point) -1 (car state))) |
| 832 | (setq par (1+ (current-column)))) |
| 833 | ((save-excursion (beginning-of-line) |
| 834 | (eq (following-char) ?#)) |
| 835 | (throw 'nesting 'cpp))) |
| 836 | ;; Loop until correct indent is found |
| 837 | (while t |
| 838 | (backward-sexp 1) |
| 839 | (cond (;--Escape from case statements |
| 840 | (and (looking-at "[A-Za-z0-9]+[ \t]*:[^=]") |
| 841 | (not complete) |
| 842 | (save-excursion (skip-chars-backward " \t") |
| 843 | (bolp)) |
| 844 | (= (save-excursion |
| 845 | (end-of-line) (backward-sexp) (point)) |
| 846 | (point)) |
| 847 | (> (save-excursion (goto-char oldpos) |
| 848 | (beginning-of-line) |
| 849 | (point)) |
| 850 | (point))) |
| 851 | (throw 'nesting 'caseblock)) |
| 852 | (;--Beginning of program |
| 853 | (looking-at pascal-progbeg-re) |
| 854 | (throw 'nesting 'progbeg)) |
| 855 | (;--No known statements |
| 856 | (bobp) |
| 857 | (throw 'nesting 'progbeg)) |
| 858 | (;--Nest block outwards |
| 859 | (looking-at pascal-beg-block-re) |
| 860 | (if (= nest 0) |
| 861 | (cond ((looking-at "case\\>") |
| 862 | (throw 'nesting 'case)) |
| 863 | ((looking-at "record\\>") |
| 864 | (throw 'nesting 'declaration)) |
| 865 | (t (throw 'nesting 'block))) |
| 866 | (if (and (looking-at "record\\>") (= nest 1)) |
| 867 | (setq funccnt (1- funccnt))) |
| 868 | (setq nest (1- nest)))) |
| 869 | (;--Nest block inwards |
| 870 | (looking-at pascal-end-block-re) |
| 871 | (if (and (looking-at "end\\s ") |
| 872 | elsed (not complete)) |
| 873 | (throw 'nesting 'block)) |
| 874 | (if (= nest 0) |
| 875 | (setq funccnt (1+ funccnt))) |
| 876 | (setq complete t |
| 877 | nest (1+ nest))) |
| 878 | (;--Defun (or parameter list) |
| 879 | (and (looking-at pascal-defun-re) |
| 880 | (progn (setq funccnt (1- funccnt) |
| 881 | did-func t) |
| 882 | (or (bolp) (< funccnt 0)))) |
| 883 | ;; Prevent searching whole buffer |
| 884 | (if (and (bolp) (>= funccnt 0)) |
| 885 | (throw 'nesting 'progbeg)) |
| 886 | (if (= 0 par) |
| 887 | (throw 'nesting 'defun) |
| 888 | (setq par 0) |
| 889 | (let ((n 0)) |
| 890 | (while (re-search-forward |
| 891 | "\\(\\<record\\>\\)\\|\\<end\\>" |
| 892 | oldpos t) |
| 893 | (if (match-end 1) |
| 894 | (setq n (1+ n)) (setq n (1- n)))) |
| 895 | (if (> n 0) |
| 896 | (throw 'nesting 'declaration) |
| 897 | (throw 'nesting 'paramlist))))) |
| 898 | (;--Declaration part |
| 899 | (and (looking-at pascal-declaration-re) |
| 900 | (not did-func) |
| 901 | (= funccnt 0)) |
| 902 | (if (save-excursion |
| 903 | (goto-char oldpos) |
| 904 | (forward-line -1) |
| 905 | (looking-at "^[ \t]*$")) |
| 906 | (throw 'nesting 'unknown) |
| 907 | (throw 'nesting 'declaration))) |
| 908 | (;--If, else or while statement |
| 909 | (and (not complete) |
| 910 | (looking-at pascal-sub-block-re)) |
| 911 | (throw 'nesting 'block)) |
| 912 | (;--Found complete statement |
| 913 | (save-excursion (forward-sexp 1) |
| 914 | (= (following-char) ?\;)) |
| 915 | (setq complete t)) |
| 916 | ))))) |
| 917 | |
| 918 | ;; Return type of block and indent level. |
| 919 | (if (> par 0) ; Unclosed Parenthesis |
| 920 | (list 'contexp par) |
| 921 | (list type (pascal-indent-level)))))) |
| 922 | |
| 923 | (defun pascal-indent-level () |
| 924 | "Return the indent-level the current statement has. |
| 925 | Do not count labels, case-statements or records." |
| 926 | (save-excursion |
| 927 | (beginning-of-line) |
| 928 | (if (looking-at "[ \t]*[0-9a-zA-Z]+[ \t]*:[^=]") |
| 929 | (search-forward ":" nil t) |
| 930 | (if (looking-at ".*=[ \t]*record\\>") |
| 931 | (search-forward "=" nil t))) |
| 932 | (skip-chars-forward " \t") |
| 933 | (current-column))) |
| 934 | |
| 935 | (defun pascal-indent-comment () |
| 936 | "Return indent for current comment." |
| 937 | (save-excursion |
| 938 | (re-search-backward "\\((\\*\\)\\|{" nil t) |
| 939 | (if (match-beginning 1) |
| 940 | (1+ (current-column)) |
| 941 | (current-column)))) |
| 942 | |
| 943 | (defun pascal-indent-case () |
| 944 | "Indent within case statements." |
| 945 | (let ((savepos (point-marker)) |
| 946 | (end (prog2 |
| 947 | (end-of-line) |
| 948 | (point-marker) |
| 949 | (re-search-backward "\\<case\\>" nil t))) |
| 950 | (beg (point)) |
| 951 | (ind 0)) |
| 952 | ;; Get right indent |
| 953 | (while (< (point) end) |
| 954 | (if (re-search-forward |
| 955 | "^[ \t]*[^ \t,:]+[ \t]*\\(,[ \t]*[^ \t,:]+[ \t]*\\)*:" |
| 956 | (marker-position end) 'move) |
| 957 | (forward-char -1)) |
| 958 | (if (< (point) end) |
| 959 | (progn |
| 960 | (delete-horizontal-space) |
| 961 | (if (> (current-column) ind) |
| 962 | (setq ind (current-column))) |
| 963 | (pascal-end-of-statement)))) |
| 964 | (goto-char beg) |
| 965 | ;; Indent all case statements |
| 966 | (while (< (point) end) |
| 967 | (if (re-search-forward |
| 968 | "^[ \t]*[^][ \t,\\.:]+[ \t]*\\(,[ \t]*[^ \t,:]+[ \t]*\\)*:" |
| 969 | (marker-position end) 'move) |
| 970 | (forward-char -1)) |
| 971 | (indent-to (1+ ind)) |
| 972 | (if (/= (following-char) ?:) |
| 973 | () |
| 974 | (forward-char 1) |
| 975 | (delete-horizontal-space) |
| 976 | (insert " ")) |
| 977 | (pascal-end-of-statement)) |
| 978 | (goto-char savepos))) |
| 979 | |
| 980 | (defun pascal-indent-paramlist (&optional arg) |
| 981 | "Indent current line in parameterlist. |
| 982 | If optional arg is non-nil, just return the |
| 983 | indent of the current line in parameterlist." |
| 984 | (save-excursion |
| 985 | (let* ((oldpos (point)) |
| 986 | (stpos (progn (goto-char (scan-lists (point) -1 1)) (point))) |
| 987 | (stcol (1+ (current-column))) |
| 988 | (edpos (progn (pascal-declaration-end) |
| 989 | (search-backward ")" (point-at-bol) t) |
| 990 | (point))) |
| 991 | (usevar (re-search-backward "\\<var\\>" stpos t))) |
| 992 | (if arg (progn |
| 993 | ;; If arg, just return indent |
| 994 | (goto-char oldpos) |
| 995 | (beginning-of-line) |
| 996 | (if (or (not usevar) (looking-at "[ \t]*var\\>")) |
| 997 | stcol (+ 4 stcol))) |
| 998 | (goto-char stpos) |
| 999 | (forward-char 1) |
| 1000 | (delete-horizontal-space) |
| 1001 | (if (and usevar (not (looking-at "var\\>"))) |
| 1002 | (indent-to (+ 4 stcol))) |
| 1003 | (pascal-indent-declaration nil stpos edpos))))) |
| 1004 | |
| 1005 | (defun pascal-indent-declaration (&optional arg start end) |
| 1006 | "Indent current lines as declaration, lining up the `:'s or `='s." |
| 1007 | (let ((pos (point-marker))) |
| 1008 | (if (and (not (or arg start)) (not (pascal-declaration-beg))) |
| 1009 | () |
| 1010 | (let ((lineup (if (or (looking-at "\\<var\\>\\|\\<record\\>") arg start) |
| 1011 | ":" "=")) |
| 1012 | (stpos (if start start |
| 1013 | (forward-word 2) (backward-word 1) (point))) |
| 1014 | (edpos (set-marker (make-marker) |
| 1015 | (if end end |
| 1016 | (max (progn (pascal-declaration-end) |
| 1017 | (point)) |
| 1018 | pos)))) |
| 1019 | ind) |
| 1020 | |
| 1021 | (goto-char stpos) |
| 1022 | ;; Indent lines in record block |
| 1023 | (if arg |
| 1024 | (while (<= (point) edpos) |
| 1025 | (beginning-of-line) |
| 1026 | (delete-horizontal-space) |
| 1027 | (if (looking-at "end\\>") |
| 1028 | (indent-to arg) |
| 1029 | (indent-to (+ arg pascal-indent-level))) |
| 1030 | (forward-line 1))) |
| 1031 | |
| 1032 | ;; Do lineup |
| 1033 | (setq ind (pascal-get-lineup-indent stpos edpos lineup)) |
| 1034 | (goto-char stpos) |
| 1035 | (while (and (<= (point) edpos) (not (eobp))) |
| 1036 | (if (search-forward lineup (point-at-eol) 'move) |
| 1037 | (forward-char -1)) |
| 1038 | (delete-horizontal-space) |
| 1039 | (indent-to ind) |
| 1040 | (if (not (looking-at lineup)) |
| 1041 | (forward-line 1) ; No more indent if there is no : or = |
| 1042 | (forward-char 1) |
| 1043 | (delete-horizontal-space) |
| 1044 | (insert " ") |
| 1045 | ;; Indent record block |
| 1046 | (if (looking-at "record\\>") |
| 1047 | (pascal-indent-declaration (current-column))) |
| 1048 | (forward-line 1))))) |
| 1049 | |
| 1050 | ;; If arg - move point |
| 1051 | (if arg (forward-line -1) |
| 1052 | (goto-char pos)))) |
| 1053 | |
| 1054 | ; "Return the indent level that will line up several lines within the region |
| 1055 | ;from b to e nicely. The lineup string is str." |
| 1056 | (defun pascal-get-lineup-indent (b e str) |
| 1057 | (save-excursion |
| 1058 | (let ((ind 0) |
| 1059 | (reg (concat str "\\|\\(\\<record\\>\\)\\|" pascal-defun-re))) |
| 1060 | (goto-char b) |
| 1061 | ;; Get rightmost position |
| 1062 | (while (< (point) e) |
| 1063 | (and (re-search-forward reg (min e (point-at-eol 2)) 'move) |
| 1064 | (cond ((match-beginning 1) |
| 1065 | ;; Skip record blocks |
| 1066 | (pascal-declaration-end)) |
| 1067 | ((match-beginning 2) |
| 1068 | ;; We have entered a new procedure. Exit. |
| 1069 | (goto-char e)) |
| 1070 | (t |
| 1071 | (goto-char (match-beginning 0)) |
| 1072 | (skip-chars-backward " \t") |
| 1073 | (if (> (current-column) ind) |
| 1074 | (setq ind (current-column))) |
| 1075 | (goto-char (match-end 0)) |
| 1076 | (end-of-line) |
| 1077 | )))) |
| 1078 | ;; In case no lineup was found |
| 1079 | (if (> ind 0) |
| 1080 | (1+ ind) |
| 1081 | ;; No lineup-string found |
| 1082 | (goto-char b) |
| 1083 | (end-of-line) |
| 1084 | (skip-chars-backward " \t") |
| 1085 | (1+ (current-column)))))) |
| 1086 | |
| 1087 | \f |
| 1088 | |
| 1089 | ;;; |
| 1090 | ;;; Completion |
| 1091 | |
| 1092 | (defun pascal-string-diff (str1 str2) |
| 1093 | "Return index of first letter where STR1 and STR2 differs." |
| 1094 | (catch 'done |
| 1095 | (let ((diff 0)) |
| 1096 | (while t |
| 1097 | (if (or (> (1+ diff) (length str1)) |
| 1098 | (> (1+ diff) (length str2))) |
| 1099 | (throw 'done diff)) |
| 1100 | (or (equal (aref str1 diff) (aref str2 diff)) |
| 1101 | (throw 'done diff)) |
| 1102 | (setq diff (1+ diff)))))) |
| 1103 | |
| 1104 | ;; Calculate all possible completions for functions if argument is `function', |
| 1105 | ;; completions for procedures if argument is `procedure' or both functions and |
| 1106 | ;; procedures otherwise. |
| 1107 | |
| 1108 | (defun pascal-func-completion (type pascal-str) |
| 1109 | ;; Build regular expression for function/procedure names |
| 1110 | (save-excursion |
| 1111 | (if (string= pascal-str "") |
| 1112 | (setq pascal-str "[a-zA-Z_]")) |
| 1113 | (let ((pascal-str (concat (cond |
| 1114 | ((eq type 'procedure) "\\<\\(procedure\\)\\s +") |
| 1115 | ((eq type 'function) "\\<\\(function\\)\\s +") |
| 1116 | (t "\\<\\(function\\|procedure\\)\\s +")) |
| 1117 | "\\<\\(" pascal-str "[a-zA-Z0-9_.]*\\)\\>")) |
| 1118 | (pascal-all ()) |
| 1119 | match) |
| 1120 | |
| 1121 | (if (not (looking-at "\\<\\(function\\|procedure\\)\\>")) |
| 1122 | (re-search-backward "\\<\\(function\\|procedure\\)\\>" nil t)) |
| 1123 | (forward-char 1) |
| 1124 | |
| 1125 | ;; Search through all reachable functions |
| 1126 | (while (pascal-beg-of-defun) |
| 1127 | (if (re-search-forward pascal-str (point-at-eol) t) |
| 1128 | (progn (setq match (buffer-substring (match-beginning 2) |
| 1129 | (match-end 2))) |
| 1130 | (push match pascal-all))) |
| 1131 | (goto-char (match-beginning 0))) |
| 1132 | |
| 1133 | pascal-all))) |
| 1134 | |
| 1135 | (defun pascal-get-completion-decl (pascal-str) |
| 1136 | ;; Macro for searching through current declaration (var, type or const) |
| 1137 | ;; for matches of `str' and adding the occurrence to `all' |
| 1138 | (let ((end (save-excursion (pascal-declaration-end) |
| 1139 | (point))) |
| 1140 | (pascal-all ()) |
| 1141 | match) |
| 1142 | ;; Traverse lines |
| 1143 | (while (< (point) end) |
| 1144 | (if (re-search-forward "[:=]" (point-at-eol) t) |
| 1145 | ;; Traverse current line |
| 1146 | (while (and (re-search-backward |
| 1147 | (concat "\\((\\|\\<\\(var\\|type\\|const\\)\\>\\)\\|" |
| 1148 | pascal-symbol-re) |
| 1149 | (point-at-bol) t) |
| 1150 | (not (match-end 1))) |
| 1151 | (setq match (buffer-substring (match-beginning 0) (match-end 0))) |
| 1152 | (if (string-match (concat "\\<" pascal-str) match) |
| 1153 | (push match pascal-all)))) |
| 1154 | (if (re-search-forward "\\<record\\>" (point-at-eol) t) |
| 1155 | (pascal-declaration-end) |
| 1156 | (forward-line 1))) |
| 1157 | |
| 1158 | pascal-all)) |
| 1159 | |
| 1160 | (defun pascal-type-completion (pascal-str) |
| 1161 | "Calculate all possible completions for types." |
| 1162 | (let ((start (point)) |
| 1163 | (pascal-all ()) |
| 1164 | goon) |
| 1165 | ;; Search for all reachable type declarations |
| 1166 | (while (or (pascal-beg-of-defun) |
| 1167 | (setq goon (not goon))) |
| 1168 | (save-excursion |
| 1169 | (if (and (< start (prog1 (save-excursion (pascal-end-of-defun) |
| 1170 | (point)) |
| 1171 | (forward-char 1))) |
| 1172 | (re-search-forward |
| 1173 | "\\<type\\>\\|\\<\\(begin\\|function\\|procedure\\)\\>" |
| 1174 | start t) |
| 1175 | (not (match-end 1))) |
| 1176 | ;; Check current type declaration |
| 1177 | (setq pascal-all |
| 1178 | (nconc (pascal-get-completion-decl pascal-str) |
| 1179 | pascal-all))))) |
| 1180 | |
| 1181 | pascal-all)) |
| 1182 | |
| 1183 | (defun pascal-var-completion (prefix) |
| 1184 | "Calculate all possible completions for variables (or constants)." |
| 1185 | (save-excursion |
| 1186 | (let ((start (point)) |
| 1187 | (pascal-all ()) |
| 1188 | goon twice) |
| 1189 | ;; Search for all reachable var declarations |
| 1190 | (while (or (pascal-beg-of-defun) |
| 1191 | (setq goon (not goon))) |
| 1192 | (save-excursion |
| 1193 | (if (> start (prog1 (save-excursion (pascal-end-of-defun) |
| 1194 | (point)))) |
| 1195 | () ; Declarations not reachable |
| 1196 | (if (search-forward "(" (point-at-eol) t) |
| 1197 | ;; Check parameterlist |
| 1198 | ;; FIXME: pascal-get-completion-decl doesn't understand |
| 1199 | ;; the var declarations in parameter lists :-( |
| 1200 | (setq pascal-all |
| 1201 | (nconc (pascal-get-completion-decl prefix) |
| 1202 | pascal-all))) |
| 1203 | (setq twice 2) |
| 1204 | (while (>= (setq twice (1- twice)) 0) |
| 1205 | (cond |
| 1206 | ((and (re-search-forward |
| 1207 | (concat "\\<\\(var\\|const\\)\\>\\|" |
| 1208 | "\\<\\(begin\\|function\\|procedure\\)\\>") |
| 1209 | start t) |
| 1210 | (not (match-end 2))) |
| 1211 | ;; Check var/const declarations |
| 1212 | (setq pascal-all |
| 1213 | (nconc (pascal-get-completion-decl prefix) |
| 1214 | pascal-all))) |
| 1215 | ((match-end 2) |
| 1216 | (setq twice 0))))))) |
| 1217 | pascal-all))) |
| 1218 | |
| 1219 | |
| 1220 | (defun pascal-keyword-completion (keyword-list pascal-str) |
| 1221 | "Give list of all possible completions of keywords in KEYWORD-LIST." |
| 1222 | (let ((pascal-all ())) |
| 1223 | (dolist (s keyword-list) |
| 1224 | (if (string-match (concat "\\<" pascal-str) s) |
| 1225 | (push s pascal-all))) |
| 1226 | pascal-all)) |
| 1227 | |
| 1228 | ;; Function passed to completing-read, try-completion or |
| 1229 | ;; all-completions to get completion on STR. If predicate is non-nil, |
| 1230 | ;; it must be a function to be called for every match to check if this |
| 1231 | ;; should really be a match. If flag is t, the function returns a list |
| 1232 | ;; of all possible completions. If it is nil it returns a string, the |
| 1233 | ;; longest possible completion, or t if STR is an exact match. If flag |
| 1234 | ;; is 'lambda, the function returns t if STR is an exact match, nil |
| 1235 | ;; otherwise. |
| 1236 | |
| 1237 | (defvar pascal-completion-cache nil) |
| 1238 | |
| 1239 | (defun pascal-completion (pascal-str pascal-pred pascal-flag) |
| 1240 | (let ((all (car pascal-completion-cache))) |
| 1241 | ;; Check the cache's freshness. |
| 1242 | (unless (and pascal-completion-cache |
| 1243 | (string-prefix-p (nth 1 pascal-completion-cache) pascal-str) |
| 1244 | (eq (current-buffer) (nth 2 pascal-completion-cache)) |
| 1245 | (eq (field-beginning) (nth 3 pascal-completion-cache))) |
| 1246 | (let ((state (car (pascal-calculate-indent)))) |
| 1247 | (setq all |
| 1248 | ;; Determine what should be completed |
| 1249 | (cond |
| 1250 | ( ;--Within a declaration or parameterlist |
| 1251 | (or (eq state 'declaration) (eq state 'paramlist) |
| 1252 | (and (eq state 'defun) |
| 1253 | (save-excursion |
| 1254 | (re-search-backward ")[ \t]*:" (point-at-bol) t)))) |
| 1255 | (if (or (eq state 'paramlist) (eq state 'defun)) |
| 1256 | (pascal-beg-of-defun)) |
| 1257 | (nconc |
| 1258 | (pascal-type-completion pascal-str) |
| 1259 | (pascal-keyword-completion pascal-type-keywords pascal-str))) |
| 1260 | ( ;--Starting a new statement |
| 1261 | (and (not (eq state 'contexp)) |
| 1262 | (save-excursion |
| 1263 | (skip-chars-backward "a-zA-Z0-9_.") |
| 1264 | (backward-sexp 1) |
| 1265 | (or (looking-at pascal-nosemi-re) |
| 1266 | (progn |
| 1267 | (forward-sexp 1) |
| 1268 | (looking-at "\\s *\\(;\\|:[^=]\\)"))))) |
| 1269 | (nconc |
| 1270 | (pascal-var-completion pascal-str) |
| 1271 | (pascal-func-completion 'procedure pascal-str) |
| 1272 | (pascal-keyword-completion pascal-start-keywords pascal-str))) |
| 1273 | (t ;--Anywhere else |
| 1274 | (nconc |
| 1275 | (pascal-var-completion pascal-str) |
| 1276 | (pascal-func-completion 'function pascal-str) |
| 1277 | (pascal-keyword-completion pascal-separator-keywords |
| 1278 | pascal-str))))) |
| 1279 | |
| 1280 | (setq pascal-completion-cache |
| 1281 | (list all pascal-str (current-buffer) (field-beginning))))) |
| 1282 | |
| 1283 | ;; Now we have built a list of all matches. Give response to caller |
| 1284 | (complete-with-action pascal-flag all pascal-str pascal-pred))) |
| 1285 | |
| 1286 | (defvar pascal-last-word-numb 0) |
| 1287 | (defvar pascal-last-word-shown nil) |
| 1288 | (defvar pascal-last-completions nil) |
| 1289 | |
| 1290 | (defun pascal-complete-word () |
| 1291 | "Complete word at current point. |
| 1292 | \(See also `pascal-toggle-completions', `pascal-type-keywords', |
| 1293 | `pascal-start-keywords' and `pascal-separator-keywords'.)" |
| 1294 | (interactive) |
| 1295 | (let* ((b (save-excursion (skip-chars-backward "a-zA-Z0-9_") (point))) |
| 1296 | (e (save-excursion (skip-chars-forward "a-zA-Z0-9_") (point)))) |
| 1297 | |
| 1298 | ;; Toggle-completions inserts whole labels |
| 1299 | (if pascal-toggle-completions |
| 1300 | (let* ((pascal-str (buffer-substring b e)) |
| 1301 | (allcomp (if (and pascal-toggle-completions |
| 1302 | (string= pascal-last-word-shown pascal-str)) |
| 1303 | pascal-last-completions |
| 1304 | (all-completions pascal-str 'pascal-completion)))) |
| 1305 | ;; Update entry number in list |
| 1306 | (setq pascal-last-completions allcomp |
| 1307 | pascal-last-word-numb |
| 1308 | (if (>= pascal-last-word-numb (1- (length allcomp))) |
| 1309 | 0 |
| 1310 | (1+ pascal-last-word-numb))) |
| 1311 | (setq pascal-last-word-shown (elt allcomp pascal-last-word-numb)) |
| 1312 | ;; Display next match or same string if no match was found |
| 1313 | (if allcomp |
| 1314 | (progn |
| 1315 | (goto-char e) |
| 1316 | (insert-before-markers pascal-last-word-shown) |
| 1317 | (delete-region b e)) |
| 1318 | (message "(No match)"))) |
| 1319 | ;; The other form of completion does not necessarily do that. |
| 1320 | (completion-in-region b e 'pascal-completion)))) |
| 1321 | |
| 1322 | (defun pascal-show-completions () |
| 1323 | "Show all possible completions at current point." |
| 1324 | (interactive) |
| 1325 | (let* ((b (save-excursion (skip-chars-backward "a-zA-Z0-9_") (point))) |
| 1326 | (e (save-excursion (skip-chars-forward "a-zA-Z0-9_") (point))) |
| 1327 | (pascal-str (buffer-substring b e)) |
| 1328 | (allcomp (if (and pascal-toggle-completions |
| 1329 | (string= pascal-last-word-shown pascal-str)) |
| 1330 | pascal-last-completions |
| 1331 | (all-completions pascal-str 'pascal-completion)))) |
| 1332 | ;; Show possible completions in a temporary buffer. |
| 1333 | (with-output-to-temp-buffer "*Completions*" |
| 1334 | (display-completion-list allcomp pascal-str)) |
| 1335 | ;; Wait for a keypress. Then delete *Completion* window |
| 1336 | (momentary-string-display "" (point)) |
| 1337 | (delete-window (get-buffer-window (get-buffer "*Completions*"))))) |
| 1338 | |
| 1339 | |
| 1340 | (defun pascal-get-default-symbol () |
| 1341 | "Return symbol around current point as a string." |
| 1342 | (save-excursion |
| 1343 | (buffer-substring (progn |
| 1344 | (skip-chars-backward " \t") |
| 1345 | (skip-chars-backward "a-zA-Z0-9_") |
| 1346 | (point)) |
| 1347 | (progn |
| 1348 | (skip-chars-forward "a-zA-Z0-9_") |
| 1349 | (point))))) |
| 1350 | |
| 1351 | (defun pascal-build-defun-re (str &optional arg) |
| 1352 | "Return function/procedure starting with STR as regular expression. |
| 1353 | With optional second arg non-nil, STR is the complete name of the instruction." |
| 1354 | (if arg |
| 1355 | (concat "^\\(function\\|procedure\\)[ \t]+\\(" str "\\)\\>") |
| 1356 | (concat "^\\(function\\|procedure\\)[ \t]+\\(" str "[a-zA-Z0-9_]*\\)\\>"))) |
| 1357 | |
| 1358 | ;; Function passed to completing-read, try-completion or |
| 1359 | ;; all-completions to get completion on any function name. If |
| 1360 | ;; predicate is non-nil, it must be a function to be called for every |
| 1361 | ;; match to check if this should really be a match. If flag is t, the |
| 1362 | ;; function returns a list of all possible completions. If it is nil |
| 1363 | ;; it returns a string, the longest possible completion, or t if STR |
| 1364 | ;; is an exact match. If flag is 'lambda, the function returns t if |
| 1365 | ;; STR is an exact match, nil otherwise. |
| 1366 | |
| 1367 | (defun pascal-comp-defun (pascal-str pascal-pred pascal-flag) |
| 1368 | (save-excursion |
| 1369 | (let ((pascal-all nil)) |
| 1370 | |
| 1371 | ;; Build regular expression for functions |
| 1372 | (let ((pascal-str (pascal-build-defun-re (if (string= pascal-str "") |
| 1373 | "[a-zA-Z_]" |
| 1374 | pascal-str)))) |
| 1375 | (goto-char (point-min)) |
| 1376 | |
| 1377 | ;; Build a list of all possible completions |
| 1378 | (while (re-search-forward pascal-str nil t) |
| 1379 | (push (match-string 2) pascal-all))) |
| 1380 | |
| 1381 | ;; Now we have built a list of all matches. Give response to caller |
| 1382 | (complete-with-action pascal-flag pascal-all pascal-str pascal-pred)))) |
| 1383 | |
| 1384 | (defun pascal-goto-defun () |
| 1385 | "Move to specified Pascal function/procedure. |
| 1386 | The default is a name found in the buffer around point." |
| 1387 | (interactive) |
| 1388 | (let* ((default (pascal-get-default-symbol)) |
| 1389 | (default (if (pascal-comp-defun default nil 'lambda) |
| 1390 | default "")) |
| 1391 | (label |
| 1392 | ;; Do completion with default |
| 1393 | (completing-read (if (not (string= default "")) |
| 1394 | (concat "Label (default " default "): ") |
| 1395 | "Label: ") |
| 1396 | ;; Complete with the defuns found in the |
| 1397 | ;; current-buffer. |
| 1398 | (lexical-let ((buf (current-buffer))) |
| 1399 | (lambda (s p a) |
| 1400 | (with-current-buffer buf |
| 1401 | (pascal-comp-defun s p a)))) |
| 1402 | nil t ""))) |
| 1403 | ;; If there was no response on prompt, use default value |
| 1404 | (if (string= label "") |
| 1405 | (setq label default)) |
| 1406 | ;; Goto right place in buffer if label is not an empty string |
| 1407 | (or (string= label "") |
| 1408 | (progn |
| 1409 | (goto-char (point-min)) |
| 1410 | (re-search-forward (pascal-build-defun-re label t)) |
| 1411 | (beginning-of-line))))) |
| 1412 | |
| 1413 | \f |
| 1414 | |
| 1415 | ;;; |
| 1416 | ;;; Pascal-outline-mode |
| 1417 | ;;; |
| 1418 | (defvar pascal-outline-map |
| 1419 | (let ((map (make-sparse-keymap))) |
| 1420 | (if (fboundp 'set-keymap-name) |
| 1421 | (set-keymap-name pascal-outline-map 'pascal-outline-map)) |
| 1422 | (define-key map "\M-\C-a" 'pascal-outline-prev-defun) |
| 1423 | (define-key map "\M-\C-e" 'pascal-outline-next-defun) |
| 1424 | (define-key map "\C-c\C-d" 'pascal-outline-goto-defun) |
| 1425 | (define-key map "\C-c\C-s" 'pascal-show-all) |
| 1426 | (define-key map "\C-c\C-h" 'pascal-hide-other-defuns) |
| 1427 | map) |
| 1428 | "Keymap used in Pascal Outline mode.") |
| 1429 | |
| 1430 | (define-obsolete-function-alias 'pascal-outline 'pascal-outline-mode "22.1") |
| 1431 | (define-minor-mode pascal-outline-mode |
| 1432 | "Outline-line minor mode for Pascal mode. |
| 1433 | When in Pascal Outline mode, portions |
| 1434 | of the text being edited may be made invisible. \\<pascal-outline-map> |
| 1435 | |
| 1436 | Pascal Outline mode provides some additional commands. |
| 1437 | |
| 1438 | \\[pascal-outline-prev-defun]\ |
| 1439 | \t- Move to previous function/procedure, hiding everything else. |
| 1440 | \\[pascal-outline-next-defun]\ |
| 1441 | \t- Move to next function/procedure, hiding everything else. |
| 1442 | \\[pascal-outline-goto-defun]\ |
| 1443 | \t- Goto function/procedure prompted for in minibuffer, |
| 1444 | \t hide all other functions. |
| 1445 | \\[pascal-show-all]\t- Show the whole buffer. |
| 1446 | \\[pascal-hide-other-defuns]\ |
| 1447 | \t- Hide everything but the current function (function under the cursor). |
| 1448 | \\[pascal-outline]\t- Leave pascal-outline-mode." |
| 1449 | :init-value nil :lighter " Outl" :keymap pascal-outline-map |
| 1450 | (add-to-invisibility-spec '(pascal . t)) |
| 1451 | (unless pascal-outline-mode |
| 1452 | (pascal-show-all))) |
| 1453 | |
| 1454 | (defun pascal-outline-change (b e hide) |
| 1455 | (when (> e b) |
| 1456 | ;; We could try and optimize this in the case where the region is |
| 1457 | ;; already hidden. But I'm not sure it's worth the trouble. |
| 1458 | (remove-overlays b e 'invisible 'pascal) |
| 1459 | (when hide |
| 1460 | (let ((ol (make-overlay b e nil t nil))) |
| 1461 | (overlay-put ol 'invisible 'pascal) |
| 1462 | (overlay-put ol 'evaporate t))))) |
| 1463 | |
| 1464 | (defun pascal-show-all () |
| 1465 | "Show all of the text in the buffer." |
| 1466 | (interactive) |
| 1467 | (pascal-outline-change (point-min) (point-max) nil)) |
| 1468 | |
| 1469 | (defun pascal-hide-other-defuns () |
| 1470 | "Show only the current defun." |
| 1471 | (interactive) |
| 1472 | (save-excursion |
| 1473 | (let ((beg (progn (if (not (looking-at "\\(function\\|procedure\\)\\>")) |
| 1474 | (pascal-beg-of-defun)) |
| 1475 | (line-beginning-position))) |
| 1476 | (end (progn (pascal-end-of-defun) |
| 1477 | (backward-sexp 1) |
| 1478 | (line-beginning-position 2))) |
| 1479 | (opoint (point-min))) |
| 1480 | ;; BEG at BOL. |
| 1481 | ;; OPOINT at EOL. |
| 1482 | ;; END at BOL. |
| 1483 | (goto-char (point-min)) |
| 1484 | |
| 1485 | ;; Hide all functions before current function |
| 1486 | (while (re-search-forward "^[ \t]*\\(function\\|procedure\\)\\>" |
| 1487 | beg 'move) |
| 1488 | (pascal-outline-change opoint (line-end-position 0) t) |
| 1489 | (setq opoint (line-end-position)) |
| 1490 | ;; Functions may be nested |
| 1491 | (if (> (progn (pascal-end-of-defun) (point)) beg) |
| 1492 | (goto-char opoint))) |
| 1493 | (if (> beg opoint) |
| 1494 | (pascal-outline-change opoint (1- beg) t)) |
| 1495 | |
| 1496 | ;; Show current function |
| 1497 | (pascal-outline-change (1- beg) end nil) |
| 1498 | ;; Hide nested functions |
| 1499 | (forward-char 1) |
| 1500 | (while (re-search-forward "^\\(function\\|procedure\\)\\>" end 'move) |
| 1501 | (setq opoint (line-end-position)) |
| 1502 | (pascal-end-of-defun) |
| 1503 | (pascal-outline-change opoint (line-end-position) t)) |
| 1504 | |
| 1505 | (goto-char end) |
| 1506 | (setq opoint end) |
| 1507 | |
| 1508 | ;; Hide all function after current function |
| 1509 | (while (re-search-forward "^\\(function\\|procedure\\)\\>" nil 'move) |
| 1510 | (pascal-outline-change opoint (line-end-position 0) t) |
| 1511 | (setq opoint (line-end-position)) |
| 1512 | (pascal-end-of-defun)) |
| 1513 | (pascal-outline-change opoint (point-max) t) |
| 1514 | |
| 1515 | ;; Hide main program |
| 1516 | (if (< (progn (forward-line -1) (point)) end) |
| 1517 | (progn |
| 1518 | (goto-char beg) |
| 1519 | (pascal-end-of-defun) |
| 1520 | (backward-sexp 1) |
| 1521 | (pascal-outline-change (line-end-position) (point-max) t)))))) |
| 1522 | |
| 1523 | (defun pascal-outline-next-defun () |
| 1524 | "Move to next function/procedure, hiding all others." |
| 1525 | (interactive) |
| 1526 | (pascal-end-of-defun) |
| 1527 | (pascal-hide-other-defuns)) |
| 1528 | |
| 1529 | (defun pascal-outline-prev-defun () |
| 1530 | "Move to previous function/procedure, hiding all others." |
| 1531 | (interactive) |
| 1532 | (pascal-beg-of-defun) |
| 1533 | (pascal-hide-other-defuns)) |
| 1534 | |
| 1535 | (defun pascal-outline-goto-defun () |
| 1536 | "Move to specified function/procedure, hiding all others." |
| 1537 | (interactive) |
| 1538 | (pascal-goto-defun) |
| 1539 | (pascal-hide-other-defuns)) |
| 1540 | |
| 1541 | (provide 'pascal) |
| 1542 | |
| 1543 | ;;; pascal.el ends here |