HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| be010748 | 1 | ;;; pascal.el --- major mode for editing pascal source in Emacs |
| 1a2b6c52 | 2 | |
| 9f92e5d9 | 3 | ;; Copyright (C) 1993, 94, 95, 96, 97, 98, 1999, 2000 Free Software Foundation, Inc. |
| 1a2b6c52 | 4 | |
| 9f92e5d9 | 5 | ;; Author: Espen Skoglund <esk@gnu.org> |
| be010748 | 6 | ;; Keywords: languages |
| 1a2b6c52 | 7 | |
| be010748 | 8 | ;; This file is part of GNU Emacs. |
| 1a2b6c52 | 9 | |
| e451cded | 10 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
| be010748 | 11 | ;; it under the terms of the GNU General Public License as published by |
| e451cded EN |
12 | ;; the Free Software Foundation; either version 2, or (at your option) |
| 13 | ;; any later version. | |
| 1a2b6c52 | 14 | |
| e451cded | 15 | ;; GNU Emacs is distributed in the hope that it will be useful, |
| be010748 RS |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 18 | ;; GNU General Public License for more details. | |
| 1a2b6c52 | 19 | |
| be010748 | 20 | ;; You should have received a copy of the GNU General Public License |
| e451cded EN |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to |
| 22 | ;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 23 | ;; Boston, MA 02111-1307, USA. | |
| 1a2b6c52 RS |
24 | |
| 25 | ;;; Commentary: | |
| 26 | ||
| b578f267 EN |
27 | ;; USAGE |
| 28 | ;; ===== | |
| da4ce263 | 29 | |
| b578f267 EN |
30 | ;; Emacs should enter Pascal mode when you find a Pascal source file. |
| 31 | ;; When you have entered Pascal mode, you may get more info by pressing | |
| 32 | ;; C-h m. You may also get online help describing various functions by: | |
| 33 | ;; C-h f <Name of function you want described> | |
| da4ce263 | 34 | |
| b578f267 EN |
35 | ;; If you want to customize Pascal mode to fit you better, you may add |
| 36 | ;; these lines (the values of the variables presented here are the defaults): | |
| 37 | ;; | |
| 38 | ;; ;; User customization for Pascal mode | |
| 39 | ;; (setq pascal-indent-level 3 | |
| 40 | ;; pascal-case-indent 2 | |
| 41 | ;; pascal-auto-newline nil | |
| 42 | ;; pascal-tab-always-indent t | |
| 43 | ;; pascal-auto-endcomments t | |
| 44 | ;; pascal-auto-lineup '(all) | |
| 45 | ;; pascal-toggle-completions nil | |
| a1506d29 | 46 | ;; pascal-type-keywords '("array" "file" "packed" "char" |
| f80235e3 | 47 | ;; "integer" "real" "string" "record") |
| b578f267 | 48 | ;; pascal-start-keywords '("begin" "end" "function" "procedure" |
| f80235e3 RS |
49 | ;; "repeat" "until" "while" "read" "readln" |
| 50 | ;; "reset" "rewrite" "write" "writeln") | |
| b578f267 | 51 | ;; pascal-separator-keywords '("downto" "else" "mod" "div" "then")) |
| 1a2b6c52 | 52 | |
| b578f267 EN |
53 | ;; KNOWN BUGS / BUGREPORTS |
| 54 | ;; ======================= | |
| 55 | ;; As far as I know, there are no bugs in the current version of this | |
| 56 | ;; package. This may not be true however, since I never use this mode | |
| 57 | ;; myself and therefore would never notice them anyway. If you do | |
| 9f92e5d9 GM |
58 | ;; find any bugs, you may submit them to: esk@gnu.org as well as to |
| 59 | ;; bug-gnu-emacs@gnu.org. | |
| da4ce263 RS |
60 | \f |
| 61 | ;;; Code: | |
| 1a2b6c52 | 62 | |
| f0cca206 RS |
63 | (defgroup pascal nil |
| 64 | "Major mode for editing Pascal source in Emacs" | |
| 65 | :group 'languages) | |
| 66 | ||
| 1a2b6c52 RS |
67 | (defvar pascal-mode-abbrev-table nil |
| 68 | "Abbrev table in use in Pascal-mode buffers.") | |
| 69 | (define-abbrev-table 'pascal-mode-abbrev-table ()) | |
| 70 | ||
| 71 | (defvar pascal-mode-map () | |
| 72 | "Keymap used in Pascal mode.") | |
| da4ce263 RS |
73 | (if pascal-mode-map |
| 74 | () | |
| 75 | (setq pascal-mode-map (make-sparse-keymap)) | |
| 76 | (define-key pascal-mode-map ";" 'electric-pascal-semi-or-dot) | |
| 77 | (define-key pascal-mode-map "." 'electric-pascal-semi-or-dot) | |
| 78 | (define-key pascal-mode-map ":" 'electric-pascal-colon) | |
| 79 | (define-key pascal-mode-map "=" 'electric-pascal-equal) | |
| 9f51be89 | 80 | (define-key pascal-mode-map "#" 'electric-pascal-hash) |
| da4ce263 RS |
81 | (define-key pascal-mode-map "\r" 'electric-pascal-terminate-line) |
| 82 | (define-key pascal-mode-map "\t" 'electric-pascal-tab) | |
| 9f51be89 RS |
83 | (define-key pascal-mode-map "\M-\t" 'pascal-complete-word) |
| 84 | (define-key pascal-mode-map "\M-?" 'pascal-show-completions) | |
| da4ce263 | 85 | (define-key pascal-mode-map "\177" 'backward-delete-char-untabify) |
| 9f51be89 RS |
86 | (define-key pascal-mode-map "\M-\C-h" 'pascal-mark-defun) |
| 87 | (define-key pascal-mode-map "\C-c\C-b" 'pascal-insert-block) | |
| da4ce263 RS |
88 | (define-key pascal-mode-map "\M-*" 'pascal-star-comment) |
| 89 | (define-key pascal-mode-map "\C-c\C-c" 'pascal-comment-area) | |
| 90 | (define-key pascal-mode-map "\C-c\C-u" 'pascal-uncomment-area) | |
| 9f51be89 RS |
91 | (define-key pascal-mode-map "\M-\C-a" 'pascal-beg-of-defun) |
| 92 | (define-key pascal-mode-map "\M-\C-e" 'pascal-end-of-defun) | |
| 93 | (define-key pascal-mode-map "\C-c\C-d" 'pascal-goto-defun) | |
| 94 | (define-key pascal-mode-map "\C-c\C-o" 'pascal-outline) | |
| 1a2b6c52 RS |
95 | ;;; A command to change the whole buffer won't be used terribly |
| 96 | ;;; often, so no need for a key binding. | |
| da4ce263 RS |
97 | ; (define-key pascal-mode-map "\C-cd" 'pascal-downcase-keywords) |
| 98 | ; (define-key pascal-mode-map "\C-cu" 'pascal-upcase-keywords) | |
| 99 | ; (define-key pascal-mode-map "\C-cc" 'pascal-capitalize-keywords) | |
| 100 | ) | |
| 69b354eb RS |
101 | |
| 102 | (defvar pascal-imenu-generic-expression | |
| 099175be | 103 | '((nil "^[ \t]*\\(function\\|procedure\\)[ \t\n]+\\([a-zA-Z0-9_.:]+\\)" 2)) |
| 69b354eb | 104 | "Imenu expression for Pascal-mode. See `imenu-generic-expression'.") |
| e936de0b | 105 | |
| da4ce263 | 106 | (defvar pascal-keywords |
| a1506d29 JB |
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" | |
| da4ce263 RS |
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\\)\\>") | |
| 27b53c17 | 122 | (defconst pascal-progbeg-re "\\<\\program\\>") |
| da4ce263 | 123 | (defconst pascal-defun-re "\\<\\(function\\|procedure\\|program\\)\\>") |
| 7e0dd87e | 124 | (defconst pascal-sub-block-re "\\<\\(if\\|else\\|for\\|while\\|with\\)\\>") |
| f6807db3 | 125 | (defconst pascal-noindent-re "\\<\\(begin\\|end\\|until\\|else\\)\\>") |
| da4ce263 RS |
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 -----/\\-----}") | |
| 1a2b6c52 RS |
133 | |
| 134 | (defvar pascal-mode-syntax-table nil | |
| 135 | "Syntax table in use in Pascal-mode buffers.") | |
| 136 | ||
| 137 | (if pascal-mode-syntax-table | |
| 138 | () | |
| 139 | (setq pascal-mode-syntax-table (make-syntax-table)) | |
| e7d795eb | 140 | (modify-syntax-entry ?\\ "." pascal-mode-syntax-table) |
| a1506d29 | 141 | (modify-syntax-entry ?( "()1" pascal-mode-syntax-table) |
| da4ce263 | 142 | (modify-syntax-entry ?) ")(4" pascal-mode-syntax-table) |
| 4d8cabfd | 143 | (modify-syntax-entry ?* ". 23b" pascal-mode-syntax-table) |
| da4ce263 RS |
144 | (modify-syntax-entry ?{ "<" pascal-mode-syntax-table) |
| 145 | (modify-syntax-entry ?} ">" pascal-mode-syntax-table) | |
| 146 | (modify-syntax-entry ?+ "." pascal-mode-syntax-table) | |
| 147 | (modify-syntax-entry ?- "." pascal-mode-syntax-table) | |
| 148 | (modify-syntax-entry ?= "." pascal-mode-syntax-table) | |
| 149 | (modify-syntax-entry ?% "." pascal-mode-syntax-table) | |
| 150 | (modify-syntax-entry ?< "." pascal-mode-syntax-table) | |
| 151 | (modify-syntax-entry ?> "." pascal-mode-syntax-table) | |
| 152 | (modify-syntax-entry ?& "." pascal-mode-syntax-table) | |
| 153 | (modify-syntax-entry ?| "." pascal-mode-syntax-table) | |
| f80235e3 | 154 | (modify-syntax-entry ?_ "_" pascal-mode-syntax-table) |
| da4ce263 RS |
155 | (modify-syntax-entry ?\' "\"" pascal-mode-syntax-table)) |
| 156 | ||
| f80235e3 | 157 | (defconst pascal-font-lock-keywords (purecopy |
| 210cf16d | 158 | (list |
| f80235e3 RS |
159 | '("^[ \t]*\\(function\\|pro\\(cedure\\|gram\\)\\)\\>[ \t]*\\([a-z]\\)" |
| 160 | 1 font-lock-keyword-face) | |
| 161 | '("^[ \t]*\\(function\\|pro\\(cedure\\|gram\\)\\)\\>[ \t]*\\([a-z][a-z0-9_]*\\)" | |
| 162 | 3 font-lock-function-name-face t) | |
| 210cf16d RS |
163 | ; ("type" "const" "real" "integer" "char" "boolean" "var" |
| 164 | ; "record" "array" "file") | |
| 165 | (cons (concat "\\<\\(array\\|boolean\\|c\\(har\\|onst\\)\\|file\\|" | |
| 166 | "integer\\|re\\(al\\|cord\\)\\|type\\|var\\)\\>") | |
| 167 | 'font-lock-type-face) | |
| 883212ce | 168 | '("\\<\\(label\\|external\\|forward\\)\\>" . font-lock-constant-face) |
| f80235e3 | 169 | '("\\<\\([0-9]+\\)[ \t]*:" 1 font-lock-function-name-face) |
| 210cf16d RS |
170 | ; ("of" "to" "for" "if" "then" "else" "case" "while" |
| 171 | ; "do" "until" "and" "or" "not" "in" "with" "repeat" "begin" "end") | |
| 172 | (concat "\\<\\(" | |
| 173 | "and\\|begin\\|case\\|do\\|e\\(lse\\|nd\\)\\|for\\|i[fn]\\|" | |
| 174 | "not\\|o[fr]\\|repeat\\|t\\(hen\\|o\\)\\|until\\|w\\(hile\\|ith\\)" | |
| 175 | "\\)\\>") | |
| 176 | '("\\<\\(goto\\)\\>[ \t]*\\([0-9]+\\)?" | |
| f80235e3 RS |
177 | 1 font-lock-keyword-face) |
| 178 | '("\\<\\(goto\\)\\>[ \t]*\\([0-9]+\\)?" | |
| 179 | 2 font-lock-keyword-face t))) | |
| 210cf16d | 180 | "Additional expressions to highlight in Pascal mode.") |
| f80235e3 | 181 | (put 'pascal-mode 'font-lock-defaults '(pascal-font-lock-keywords nil t)) |
| 210cf16d | 182 | |
| f0cca206 RS |
183 | (defcustom pascal-indent-level 3 |
| 184 | "*Indentation of Pascal statements with respect to containing block." | |
| 185 | :type 'integer | |
| 186 | :group 'pascal) | |
| 187 | ||
| 188 | (defcustom pascal-case-indent 2 | |
| 189 | "*Indentation for case statements." | |
| 190 | :type 'integer | |
| 191 | :group 'pascal) | |
| 192 | ||
| 193 | (defcustom pascal-auto-newline nil | |
| 194 | "*Non-nil means automatically insert newlines in certain cases. | |
| 195 | These include after semicolons and after the punctuation mark after an `end'." | |
| 196 | :type 'boolean | |
| 197 | :group 'pascal) | |
| 198 | ||
| 27b53c17 RS |
199 | (defcustom pascal-indent-nested-functions t |
| 200 | "*Non-nil means nested functions are indented." | |
| 201 | :type 'boolean | |
| 202 | :group 'pascal) | |
| 203 | ||
| f0cca206 RS |
204 | (defcustom pascal-tab-always-indent t |
| 205 | "*Non-nil means TAB in Pascal mode should always reindent the current line. | |
| 206 | If this is nil, TAB inserts a tab if it is at the end of the line | |
| 207 | and follows non-whitespace text." | |
| 208 | :type 'boolean | |
| 209 | :group 'pascal) | |
| 210 | ||
| 211 | (defcustom pascal-auto-endcomments t | |
| 212 | "*Non-nil means automatically insert comments after certain `end's. | |
| 213 | Specifically, this is done after the ends of cases statements and functions. | |
| 214 | The name of the function or case is included between the braces." | |
| 215 | :type 'boolean | |
| 216 | :group 'pascal) | |
| 217 | ||
| 218 | (defcustom pascal-auto-lineup '(all) | |
| 3a3ee445 RS |
219 | "*List of contexts where auto lineup of :'s or ='s should be done. |
| 220 | Elements can be of type: 'paramlist', 'declaration' or 'case', which will | |
| 221 | do auto lineup in parameterlist, declarations or case-statements | |
| 222 | respectively. The word 'all' will do all lineups. '(case paramlist) for | |
| 223 | instance will do lineup in case-statements and parameterlist, while '(all) | |
| f0cca206 | 224 | will do all lineups." |
| 27b53c17 RS |
225 | :type '(set :extra-offset 8 |
| 226 | (const :tag "Everything" all) | |
| 227 | (const :tag "Parameter lists" paramlist) | |
| 228 | (const :tag "Decalrations" declaration) | |
| 229 | (const :tag "Case statements" case)) | |
| f0cca206 RS |
230 | :group 'pascal) |
| 231 | ||
| 232 | (defcustom pascal-toggle-completions nil | |
| 105ad0da RS |
233 | "*Non-nil means \\<pascal-mode-map>\\[pascal-complete-word] should try all possible completions one by one. |
| 234 | Repeated use of \\[pascal-complete-word] will show you all of them. | |
| 235 | Normally, when there is more than one possible completion, | |
| f0cca206 RS |
236 | it displays a list of all possible completions." |
| 237 | :type 'boolean | |
| 238 | :group 'pascal) | |
| 3a3ee445 | 239 | |
| f0cca206 | 240 | (defcustom pascal-type-keywords |
| da4ce263 RS |
241 | '("array" "file" "packed" "char" "integer" "real" "string" "record") |
| 242 | "*Keywords for types used when completing a word in a declaration or parmlist. | |
| f0cca206 RS |
243 | These include integer, real, char, etc. |
| 244 | The types defined within the Pascal program | |
| 245 | are handled in another way, and should not be added to this list." | |
| 246 | :type '(repeat (string :tag "Keyword")) | |
| 247 | :group 'pascal) | |
| 3a3ee445 | 248 | |
| f0cca206 | 249 | (defcustom pascal-start-keywords |
| da4ce263 RS |
250 | '("begin" "end" "function" "procedure" "repeat" "until" "while" |
| 251 | "read" "readln" "reset" "rewrite" "write" "writeln") | |
| 252 | "*Keywords to complete when standing at the first word of a statement. | |
| f0cca206 | 253 | These are keywords such as begin, repeat, until, readln. |
| da4ce263 | 254 | The procedures and variables defined within the Pascal program |
| 3090ac12 | 255 | are handled in another way, and should not be added to this list." |
| f0cca206 RS |
256 | :type '(repeat (string :tag "Keyword")) |
| 257 | :group 'pascal) | |
| 3a3ee445 | 258 | |
| f0cca206 | 259 | (defcustom pascal-separator-keywords |
| da4ce263 RS |
260 | '("downto" "else" "mod" "div" "then") |
| 261 | "*Keywords to complete when NOT standing at the first word of a statement. | |
| f0cca206 RS |
262 | These are keywords such as downto, else, mod, then. |
| 263 | Variables and function names defined within the Pascal program | |
| 264 | are handled in another way, and should not be added to this list." | |
| 265 | :type '(repeat (string :tag "Keyword")) | |
| 266 | :group 'pascal) | |
| 267 | ||
| da4ce263 RS |
268 | |
| 269 | ;;; | |
| 270 | ;;; Macros | |
| 271 | ;;; | |
| 272 | ||
| 273 | (defsubst pascal-get-beg-of-line (&optional arg) | |
| 274 | (save-excursion | |
| 275 | (beginning-of-line arg) | |
| 276 | (point))) | |
| 277 | ||
| 278 | (defsubst pascal-get-end-of-line (&optional arg) | |
| 279 | (save-excursion | |
| 280 | (end-of-line arg) | |
| 281 | (point))) | |
| 282 | ||
| 283 | (defun pascal-declaration-end () | |
| 284 | (let ((nest 1)) | |
| 285 | (while (and (> nest 0) | |
| a1506d29 JB |
286 | (re-search-forward |
| 287 | "[:=]\\|\\(\\<record\\>\\)\\|\\(\\<end\\>\\)" | |
| da4ce263 RS |
288 | (save-excursion (end-of-line 2) (point)) t)) |
| 289 | (cond ((match-beginning 1) (setq nest (1+ nest))) | |
| 2e952aac RS |
290 | ((match-beginning 2) (setq nest (1- nest))) |
| 291 | ((looking-at "[^(\n]+)") (setq nest 0)))))) | |
| da4ce263 | 292 | |
| 3a3ee445 | 293 | |
| da4ce263 RS |
294 | (defun pascal-declaration-beg () |
| 295 | (let ((nest 1)) | |
| 296 | (while (and (> nest 0) | |
| 3a3ee445 | 297 | (re-search-backward "[:=]\\|\\<\\(type\\|var\\|label\\|const\\)\\>\\|\\(\\<record\\>\\)\\|\\(\\<end\\>\\)" (pascal-get-beg-of-line 0) t)) |
| da4ce263 RS |
298 | (cond ((match-beginning 1) (setq nest 0)) |
| 299 | ((match-beginning 2) (setq nest (1- nest))) | |
| 300 | ((match-beginning 3) (setq nest (1+ nest))))) | |
| 301 | (= nest 0))) | |
| 3a3ee445 | 302 | |
| a1506d29 | 303 | |
| da4ce263 RS |
304 | (defsubst pascal-within-string () |
| 305 | (save-excursion | |
| 306 | (nth 3 (parse-partial-sexp (pascal-get-beg-of-line) (point))))) | |
| 307 | ||
| 1a2b6c52 RS |
308 | |
| 309 | ;;;###autoload | |
| 310 | (defun pascal-mode () | |
| da4ce263 RS |
311 | "Major mode for editing Pascal code. \\<pascal-mode-map> |
| 312 | TAB indents for Pascal code. Delete converts tabs to spaces as it moves back. | |
| 313 | ||
| 314 | \\[pascal-complete-word] completes the word around current point with respect \ | |
| 315 | to position in code | |
| 316 | \\[pascal-show-completions] shows all possible completions at this point. | |
| 317 | ||
| 318 | Other useful functions are: | |
| 319 | ||
| 320 | \\[pascal-mark-defun]\t- Mark function. | |
| 321 | \\[pascal-insert-block]\t- insert begin ... end; | |
| 322 | \\[pascal-star-comment]\t- insert (* ... *) | |
| 323 | \\[pascal-comment-area]\t- Put marked area in a comment, fixing nested comments. | |
| 324 | \\[pascal-uncomment-area]\t- Uncomment an area commented with \ | |
| 325 | \\[pascal-comment-area]. | |
| 326 | \\[pascal-beg-of-defun]\t- Move to beginning of current function. | |
| 327 | \\[pascal-end-of-defun]\t- Move to end of current function. | |
| 328 | \\[pascal-goto-defun]\t- Goto function prompted for in the minibuffer. | |
| 329 | \\[pascal-outline]\t- Enter pascal-outline-mode (see also pascal-outline). | |
| 330 | ||
| 331 | Variables controlling indentation/edit style: | |
| 332 | ||
| 27b53c17 | 333 | pascal-indent-level (default 3) |
| da4ce263 | 334 | Indentation of Pascal statements with respect to containing block. |
| 27b53c17 | 335 | pascal-case-indent (default 2) |
| da4ce263 | 336 | Indentation for case statements. |
| 27b53c17 | 337 | pascal-auto-newline (default nil) |
| 4a6fd75f KH |
338 | Non-nil means automatically newline after semicolons and the punctuation |
| 339 | mark after an end. | |
| 27b53c17 RS |
340 | pascal-indent-nested-functions (default t) |
| 341 | Non-nil means nested functions are indented. | |
| 3a3ee445 | 342 | pascal-tab-always-indent (default t) |
| 1a2b6c52 RS |
343 | Non-nil means TAB in Pascal mode should always reindent the current line, |
| 344 | regardless of where in the line point is when the TAB command is used. | |
| 27b53c17 | 345 | pascal-auto-endcomments (default t) |
| da4ce263 RS |
346 | Non-nil means a comment { ... } is set after the ends which ends cases and |
| 347 | functions. The name of the function or case will be set between the braces. | |
| 27b53c17 | 348 | pascal-auto-lineup (default t) |
| e936de0b | 349 | List of contexts where auto lineup of :'s or ='s should be done. |
| da4ce263 RS |
350 | |
| 351 | See also the user variables pascal-type-keywords, pascal-start-keywords and | |
| 81aca4f4 | 352 | pascal-separator-keywords. |
| 1a2b6c52 RS |
353 | |
| 354 | Turning on Pascal mode calls the value of the variable pascal-mode-hook with | |
| 355 | no args, if that value is non-nil." | |
| 356 | (interactive) | |
| 357 | (kill-all-local-variables) | |
| 358 | (use-local-map pascal-mode-map) | |
| 359 | (setq major-mode 'pascal-mode) | |
| 360 | (setq mode-name "Pascal") | |
| 361 | (setq local-abbrev-table pascal-mode-abbrev-table) | |
| 362 | (set-syntax-table pascal-mode-syntax-table) | |
| 363 | (make-local-variable 'indent-line-function) | |
| 364 | (setq indent-line-function 'pascal-indent-line) | |
| e7e09325 | 365 | (make-local-variable 'comment-indent-function) |
| da4ce263 | 366 | (setq comment-indent-function 'pascal-indent-comment) |
| 1a2b6c52 | 367 | (make-local-variable 'parse-sexp-ignore-comments) |
| 9f51be89 | 368 | (setq parse-sexp-ignore-comments nil) |
| ef8c3cf9 KH |
369 | (make-local-variable 'blink-matching-paren-dont-ignore-comments) |
| 370 | (setq blink-matching-paren-dont-ignore-comments t) | |
| 1a2b6c52 RS |
371 | (make-local-variable 'case-fold-search) |
| 372 | (setq case-fold-search t) | |
| 105ad0da RS |
373 | (make-local-variable 'comment-start) |
| 374 | (setq comment-start "{") | |
| 210cf16d RS |
375 | (make-local-variable 'comment-start-skip) |
| 376 | (setq comment-start-skip "(\\*+ *\\|{ *") | |
| 377 | (make-local-variable 'comment-end) | |
| 378 | (setq comment-end "}") | |
| 69b354eb | 379 | ;; Font lock support |
| 7fa28db0 SM |
380 | (make-local-variable 'font-lock-defaults) |
| 381 | (setq font-lock-defaults '(pascal-font-lock-keywords nil t)) | |
| 69b354eb RS |
382 | ;; Imenu support |
| 383 | (make-local-variable 'imenu-generic-expression) | |
| 384 | (setq imenu-generic-expression pascal-imenu-generic-expression) | |
| c0b08eb0 | 385 | (setq imenu-case-fold-search t) |
| 1a2b6c52 RS |
386 | (run-hooks 'pascal-mode-hook)) |
| 387 | ||
| da4ce263 RS |
388 | \f |
| 389 | ||
| 1a2b6c52 RS |
390 | ;;; |
| 391 | ;;; Electric functions | |
| 392 | ;;; | |
| 1a2b6c52 RS |
393 | (defun electric-pascal-terminate-line () |
| 394 | "Terminate line and indent next line." | |
| 395 | (interactive) | |
| da4ce263 | 396 | ;; First, check if current line should be indented |
| 1a2b6c52 RS |
397 | (save-excursion |
| 398 | (beginning-of-line) | |
| 399 | (skip-chars-forward " \t") | |
| da4ce263 | 400 | (if (looking-at pascal-autoindent-lines-re) |
| 1a2b6c52 | 401 | (pascal-indent-line))) |
| da4ce263 | 402 | (delete-horizontal-space) ; Removes trailing whitespaces |
| 1a2b6c52 | 403 | (newline) |
| da4ce263 | 404 | ;; Indent next line |
| 1a2b6c52 RS |
405 | (pascal-indent-line) |
| 406 | ;; Maybe we should set some endcomments | |
| 407 | (if pascal-auto-endcomments | |
| 408 | (pascal-set-auto-comments)) | |
| 409 | ;; Check if we shall indent inside comment | |
| 410 | (let ((setstar nil)) | |
| 411 | (save-excursion | |
| 412 | (forward-line -1) | |
| 413 | (skip-chars-forward " \t") | |
| da4ce263 | 414 | (cond ((looking-at "\\*[ \t]+)") |
| 1a2b6c52 RS |
415 | ;; Delete region between `*' and `)' if there is only whitespaces. |
| 416 | (forward-char 1) | |
| da4ce263 | 417 | (delete-horizontal-space)) |
| 1a2b6c52 RS |
418 | ((and (looking-at "(\\*\\|\\*[^)]") |
| 419 | (not (save-excursion | |
| 420 | (search-forward "*)" (pascal-get-end-of-line) t)))) | |
| 421 | (setq setstar t)))) | |
| 422 | ;; If last line was a star comment line then this one shall be too. | |
| a1506d29 | 423 | (if (null setstar) |
| da4ce263 RS |
424 | (pascal-indent-line) |
| 425 | (insert "* ")))) | |
| 1a2b6c52 | 426 | |
| 1a2b6c52 | 427 | |
| da4ce263 RS |
428 | (defun electric-pascal-semi-or-dot () |
| 429 | "Insert `;' or `.' character and reindent the line." | |
| 1a2b6c52 RS |
430 | (interactive) |
| 431 | (insert last-command-char) | |
| 432 | (save-excursion | |
| 433 | (beginning-of-line) | |
| 434 | (pascal-indent-line)) | |
| 435 | (if pascal-auto-newline | |
| 436 | (electric-pascal-terminate-line))) | |
| 437 | ||
| 438 | (defun electric-pascal-colon () | |
| da4ce263 | 439 | "Insert `:' and do all indentions except line indent on this line." |
| 1a2b6c52 RS |
440 | (interactive) |
| 441 | (insert last-command-char) | |
| da4ce263 RS |
442 | ;; Do nothing if within string. |
| 443 | (if (pascal-within-string) | |
| 444 | () | |
| 445 | (save-excursion | |
| 446 | (beginning-of-line) | |
| 447 | (pascal-indent-line)) | |
| 448 | (let ((pascal-tab-always-indent nil)) | |
| 449 | (pascal-indent-command)))) | |
| 450 | ||
| 1a2b6c52 | 451 | (defun electric-pascal-equal () |
| da4ce263 | 452 | "Insert `=', and do indention if within type declaration." |
| 1a2b6c52 RS |
453 | (interactive) |
| 454 | (insert last-command-char) | |
| da4ce263 | 455 | (if (eq (car (pascal-calculate-indent)) 'declaration) |
| 1a2b6c52 RS |
456 | (let ((pascal-tab-always-indent nil)) |
| 457 | (pascal-indent-command)))) | |
| 458 | ||
| 9f51be89 | 459 | (defun electric-pascal-hash () |
| 4a6fd75f | 460 | "Insert `#', and indent to column 0 if this is a CPP directive." |
| 9f51be89 RS |
461 | (interactive) |
| 462 | (insert last-command-char) | |
| 463 | (if (save-excursion (beginning-of-line) (looking-at "^[ \t]*#")) | |
| 464 | (save-excursion (beginning-of-line) | |
| 465 | (delete-horizontal-space)))) | |
| 466 | ||
| 1a2b6c52 | 467 | (defun electric-pascal-tab () |
| da4ce263 | 468 | "Function called when TAB is pressed in Pascal mode." |
| 1a2b6c52 | 469 | (interactive) |
| 9f51be89 RS |
470 | ;; Do nothing if within a string or in a CPP directive. |
| 471 | (if (or (pascal-within-string) | |
| 472 | (and (not (bolp)) | |
| 473 | (save-excursion (beginning-of-line) (eq (following-char) ?#)))) | |
| da4ce263 RS |
474 | (insert "\t") |
| 475 | ;; If pascal-tab-always-indent, indent the beginning of the line. | |
| 476 | (if pascal-tab-always-indent | |
| 477 | (save-excursion | |
| 478 | (beginning-of-line) | |
| 479 | (pascal-indent-line)) | |
| 2e952aac RS |
480 | (if (save-excursion |
| 481 | (skip-chars-backward " \t") | |
| 482 | (bolp)) | |
| 483 | (pascal-indent-line) | |
| 484 | (insert "\t"))) | |
| da4ce263 RS |
485 | (pascal-indent-command))) |
| 486 | ||
| 487 | \f | |
| 1a2b6c52 RS |
488 | |
| 489 | ;;; | |
| 490 | ;;; Interactive functions | |
| 491 | ;;; | |
| 492 | (defun pascal-insert-block () | |
| da4ce263 | 493 | "Insert Pascal begin ... end; block in the code with right indentation." |
| 1a2b6c52 | 494 | (interactive) |
| 1a2b6c52 RS |
495 | (insert "begin") |
| 496 | (electric-pascal-terminate-line) | |
| 497 | (save-excursion | |
| 6acae80a | 498 | (newline) |
| 1a2b6c52 RS |
499 | (insert "end;") |
| 500 | (beginning-of-line) | |
| 501 | (pascal-indent-line))) | |
| 502 | ||
| 503 | (defun pascal-star-comment () | |
| da4ce263 | 504 | "Insert Pascal star comment at point." |
| 1a2b6c52 RS |
505 | (interactive) |
| 506 | (pascal-indent-line) | |
| 507 | (insert "(*") | |
| 508 | (electric-pascal-terminate-line) | |
| 509 | (save-excursion | |
| 510 | (electric-pascal-terminate-line) | |
| da4ce263 RS |
511 | (delete-horizontal-space) |
| 512 | (insert ")")) | |
| 513 | (insert " ")) | |
| 1a2b6c52 | 514 | |
| da4ce263 | 515 | (defun pascal-mark-defun () |
| 1a2b6c52 | 516 | "Mark the current pascal function (or procedure). |
| da4ce263 | 517 | This puts the mark at the end, and point at the beginning." |
| 1a2b6c52 RS |
518 | (interactive) |
| 519 | (push-mark (point)) | |
| da4ce263 | 520 | (pascal-end-of-defun) |
| 1a2b6c52 | 521 | (push-mark (point)) |
| da4ce263 RS |
522 | (pascal-beg-of-defun) |
| 523 | (if (fboundp 'zmacs-activate-region) | |
| 524 | (zmacs-activate-region))) | |
| 1a2b6c52 RS |
525 | |
| 526 | (defun pascal-comment-area (start end) | |
| da4ce263 RS |
527 | "Put the region into a Pascal comment. |
| 528 | The comments that are in this area are \"deformed\": | |
| 529 | `*)' becomes `!(*' and `}' becomes `!{'. | |
| 530 | These deformed comments are returned to normal if you use | |
| 531 | \\[pascal-uncomment-area] to undo the commenting. | |
| 532 | ||
| 533 | The commented area starts with `pascal-exclude-str-start', and ends with | |
| 534 | `pascal-include-str-end'. But if you change these variables, | |
| 535 | \\[pascal-uncomment-area] won't recognize the comments." | |
| 1a2b6c52 RS |
536 | (interactive "r") |
| 537 | (save-excursion | |
| 538 | ;; Insert start and endcomments | |
| 539 | (goto-char end) | |
| 540 | (if (and (save-excursion (skip-chars-forward " \t") (eolp)) | |
| 541 | (not (save-excursion (skip-chars-backward " \t") (bolp)))) | |
| 542 | (forward-line 1) | |
| 543 | (beginning-of-line)) | |
| da4ce263 | 544 | (insert pascal-exclude-str-end) |
| 1a2b6c52 RS |
545 | (setq end (point)) |
| 546 | (newline) | |
| 547 | (goto-char start) | |
| 548 | (beginning-of-line) | |
| da4ce263 | 549 | (insert pascal-exclude-str-start) |
| 1a2b6c52 RS |
550 | (newline) |
| 551 | ;; Replace end-comments within commented area | |
| 552 | (goto-char end) | |
| 553 | (save-excursion | |
| 554 | (while (re-search-backward "\\*)" start t) | |
| 555 | (replace-match "!(*" t t))) | |
| 556 | (save-excursion | |
| 557 | (while (re-search-backward "}" start t) | |
| 558 | (replace-match "!{" t t))))) | |
| 559 | ||
| 560 | (defun pascal-uncomment-area () | |
| da4ce263 RS |
561 | "Uncomment a commented area; change deformed comments back to normal. |
| 562 | This command does nothing if the pointer is not in a commented | |
| 1a2b6c52 RS |
563 | area. See also `pascal-comment-area'." |
| 564 | (interactive) | |
| 565 | (save-excursion | |
| 566 | (let ((start (point)) | |
| 567 | (end (point))) | |
| 568 | ;; Find the boundaries of the comment | |
| 569 | (save-excursion | |
| da4ce263 | 570 | (setq start (progn (search-backward pascal-exclude-str-start nil t) |
| 1a2b6c52 | 571 | (point))) |
| da4ce263 | 572 | (setq end (progn (search-forward pascal-exclude-str-end nil t) |
| 1a2b6c52 RS |
573 | (point)))) |
| 574 | ;; Check if we're really inside a comment | |
| 575 | (if (or (equal start (point)) (<= end (point))) | |
| 576 | (message "Not standing within commented area.") | |
| 577 | (progn | |
| 578 | ;; Remove endcomment | |
| 579 | (goto-char end) | |
| 580 | (beginning-of-line) | |
| 581 | (let ((pos (point))) | |
| 582 | (end-of-line) | |
| 583 | (delete-region pos (1+ (point)))) | |
| 584 | ;; Change comments back to normal | |
| 585 | (save-excursion | |
| 586 | (while (re-search-backward "!{" start t) | |
| 587 | (replace-match "}" t t))) | |
| 588 | (save-excursion | |
| 589 | (while (re-search-backward "!(\\*" start t) | |
| 590 | (replace-match "*)" t t))) | |
| 591 | ;; Remove startcomment | |
| 592 | (goto-char start) | |
| 593 | (beginning-of-line) | |
| 594 | (let ((pos (point))) | |
| 595 | (end-of-line) | |
| 596 | (delete-region pos (1+ (point))))))))) | |
| 597 | ||
| da4ce263 RS |
598 | (defun pascal-beg-of-defun () |
| 599 | "Move backward to the beginning of the current function or procedure." | |
| 1a2b6c52 | 600 | (interactive) |
| da4ce263 RS |
601 | (catch 'found |
| 602 | (if (not (looking-at (concat "\\s \\|\\s)\\|" pascal-defun-re))) | |
| 603 | (forward-sexp 1)) | |
| 604 | (let ((nest 0) (max -1) (func 0) | |
| a1506d29 | 605 | (reg (concat pascal-beg-block-re "\\|" |
| da4ce263 RS |
606 | pascal-end-block-re "\\|" |
| 607 | pascal-defun-re))) | |
| 608 | (while (re-search-backward reg nil 'move) | |
| 609 | (cond ((let ((state (save-excursion | |
| 610 | (parse-partial-sexp (point-min) (point))))) | |
| 611 | (or (nth 3 state) (nth 4 state))) ; Inside string or comment | |
| 612 | ()) | |
| 613 | ((match-end 1) ; begin|case|record|repeat | |
| 614 | (if (and (looking-at "\\<record\\>") (>= max 0)) | |
| 615 | (setq func (1- func))) | |
| 616 | (setq nest (1+ nest) | |
| 617 | max (max nest max))) | |
| 618 | ((match-end 2) ; end|until | |
| 619 | (if (and (= nest max) (>= max 0)) | |
| 620 | (setq func (1+ func))) | |
| 621 | (setq nest (1- nest))) | |
| 622 | ((match-end 3) ; function|procedure | |
| 27b53c17 | 623 | (if (= 0 func) |
| da4ce263 RS |
624 | (throw 'found t) |
| 625 | (setq func (1- func))))))) | |
| 626 | nil)) | |
| 627 | ||
| 628 | (defun pascal-end-of-defun () | |
| 629 | "Move forward to the end of the current function or procedure." | |
| 1a2b6c52 | 630 | (interactive) |
| da4ce263 RS |
631 | (if (looking-at "\\s ") |
| 632 | (forward-sexp 1)) | |
| 633 | (if (not (looking-at pascal-defun-re)) | |
| 634 | (pascal-beg-of-defun)) | |
| 635 | (forward-char 1) | |
| 636 | (let ((nest 0) (func 1) | |
| a1506d29 | 637 | (reg (concat pascal-beg-block-re "\\|" |
| da4ce263 RS |
638 | pascal-end-block-re "\\|" |
| 639 | pascal-defun-re))) | |
| 640 | (while (and (/= func 0) | |
| 641 | (re-search-forward reg nil 'move)) | |
| 642 | (cond ((let ((state (save-excursion | |
| 643 | (parse-partial-sexp (point-min) (point))))) | |
| 644 | (or (nth 3 state) (nth 4 state))) ; Inside string or comment | |
| 645 | ()) | |
| 646 | ((match-end 1) | |
| 647 | (setq nest (1+ nest)) | |
| 648 | (if (save-excursion | |
| 649 | (goto-char (match-beginning 0)) | |
| 650 | (looking-at "\\<record\\>")) | |
| 651 | (setq func (1+ func)))) | |
| 652 | ((match-end 2) | |
| 653 | (setq nest (1- nest)) | |
| 654 | (if (= nest 0) | |
| 655 | (setq func (1- func)))) | |
| 656 | ((match-end 3) | |
| 657 | (setq func (1+ func)))))) | |
| 658 | (forward-line 1)) | |
| 1a2b6c52 | 659 | |
| 3a3ee445 RS |
660 | (defun pascal-end-of-statement () |
| 661 | "Move forward to end of current statement." | |
| 662 | (interactive) | |
| a0bd2457 RS |
663 | (let ((parse-sexp-ignore-comments t) |
| 664 | (nest 0) pos | |
| 3a3ee445 RS |
665 | (regexp (concat "\\(" pascal-beg-block-re "\\)\\|\\(" |
| 666 | pascal-end-block-re "\\)"))) | |
| 667 | (if (not (looking-at "[ \t\n]")) (forward-sexp -1)) | |
| 668 | (or (looking-at pascal-beg-block-re) | |
| 669 | ;; Skip to end of statement | |
| 670 | (setq pos (catch 'found | |
| 671 | (while t | |
| 672 | (forward-sexp 1) | |
| 673 | (cond ((looking-at "[ \t]*;") | |
| 674 | (skip-chars-forward "^;") | |
| 675 | (forward-char 1) | |
| 676 | (throw 'found (point))) | |
| 677 | ((save-excursion | |
| 678 | (forward-sexp -1) | |
| 679 | (looking-at pascal-beg-block-re)) | |
| 680 | (goto-char (match-beginning 0)) | |
| 681 | (throw 'found nil)) | |
| 682 | ((eobp) | |
| 683 | (throw 'found (point)))))))) | |
| 684 | (if (not pos) | |
| 685 | ;; Skip a whole block | |
| 686 | (catch 'found | |
| 687 | (while t | |
| 688 | (re-search-forward regexp nil 'move) | |
| a1506d29 | 689 | (setq nest (if (match-end 1) |
| 3a3ee445 RS |
690 | (1+ nest) |
| 691 | (1- nest))) | |
| 692 | (cond ((eobp) | |
| 693 | (throw 'found (point))) | |
| 694 | ((= 0 nest) | |
| 695 | (throw 'found (pascal-end-of-statement)))))) | |
| 696 | pos))) | |
| 697 | ||
| 1a2b6c52 | 698 | (defun pascal-downcase-keywords () |
| da4ce263 | 699 | "Downcase all Pascal keywords in the buffer." |
| 1a2b6c52 RS |
700 | (interactive) |
| 701 | (pascal-change-keywords 'downcase-word)) | |
| 702 | ||
| 703 | (defun pascal-upcase-keywords () | |
| da4ce263 | 704 | "Upcase all Pascal keywords in the buffer." |
| 1a2b6c52 RS |
705 | (interactive) |
| 706 | (pascal-change-keywords 'upcase-word)) | |
| 707 | ||
| 708 | (defun pascal-capitalize-keywords () | |
| da4ce263 | 709 | "Capitalize all Pascal keywords in the buffer." |
| 1a2b6c52 RS |
710 | (interactive) |
| 711 | (pascal-change-keywords 'capitalize-word)) | |
| 712 | ||
| da4ce263 | 713 | ;; Change the keywords according to argument. |
| 1a2b6c52 | 714 | (defun pascal-change-keywords (change-word) |
| 1a2b6c52 | 715 | (save-excursion |
| da4ce263 RS |
716 | (let ((keyword-re (concat "\\<\\(" |
| 717 | (mapconcat 'identity pascal-keywords "\\|") | |
| 718 | "\\)\\>"))) | |
| 719 | (goto-char (point-min)) | |
| 720 | (while (re-search-forward keyword-re nil t) | |
| 721 | (funcall change-word -1))))) | |
| 722 | ||
| 723 | \f | |
| 1a2b6c52 RS |
724 | |
| 725 | ;;; | |
| 726 | ;;; Other functions | |
| 727 | ;;; | |
| 1a2b6c52 | 728 | (defun pascal-set-auto-comments () |
| da4ce263 RS |
729 | "Insert `{ case }' or `{ NAME }' on this line if appropriate. |
| 730 | Insert `{ case }' if there is an `end' on the line which | |
| 731 | ends a case block. Insert `{ NAME }' if there is an `end' | |
| 732 | on the line which ends a function or procedure named NAME." | |
| 1a2b6c52 RS |
733 | (save-excursion |
| 734 | (forward-line -1) | |
| 735 | (skip-chars-forward " \t") | |
| da4ce263 | 736 | (if (and (looking-at "\\<end;") |
| 1a2b6c52 RS |
737 | (not (save-excursion |
| 738 | (end-of-line) | |
| da4ce263 | 739 | (search-backward "{" (pascal-get-beg-of-line) t)))) |
| 81aca4f4 RS |
740 | (let ((type (car (pascal-calculate-indent)))) |
| 741 | (if (eq type 'declaration) | |
| 742 | () | |
| 743 | (if (eq type 'case) | |
| 744 | ;; This is a case block | |
| 745 | (progn | |
| 746 | (end-of-line) | |
| 747 | (delete-horizontal-space) | |
| 748 | (insert " { case }")) | |
| 749 | (let ((nest 1)) | |
| 750 | ;; Check if this is the end of a function | |
| 751 | (save-excursion | |
| 752 | (while (not (or (looking-at pascal-defun-re) (bobp))) | |
| 753 | (backward-sexp 1) | |
| 754 | (cond ((looking-at pascal-beg-block-re) | |
| 755 | (setq nest (1- nest))) | |
| 756 | ((looking-at pascal-end-block-re) | |
| 757 | (setq nest (1+ nest))))) | |
| 758 | (if (bobp) | |
| 759 | (setq nest 1))) | |
| 760 | (if (zerop nest) | |
| 761 | (progn | |
| 762 | (end-of-line) | |
| 763 | (delete-horizontal-space) | |
| 764 | (insert " { ") | |
| 765 | (let (b e) | |
| 766 | (save-excursion | |
| 767 | (setq b (progn (pascal-beg-of-defun) | |
| 768 | (skip-chars-forward "^ \t") | |
| 769 | (skip-chars-forward " \t") | |
| 770 | (point)) | |
| 771 | e (progn (skip-chars-forward "a-zA-Z0-9_") | |
| 772 | (point)))) | |
| 773 | (insert-buffer-substring (current-buffer) b e)) | |
| 774 | (insert " }")))))))))) | |
| 1a2b6c52 | 775 | |
| da4ce263 RS |
776 | \f |
| 777 | ||
| 1a2b6c52 | 778 | ;;; |
| da4ce263 RS |
779 | ;;; Indentation |
| 780 | ;;; | |
| 781 | (defconst pascal-indent-alist | |
| 782 | '((block . (+ ind pascal-indent-level)) | |
| 783 | (case . (+ ind pascal-case-indent)) | |
| 9f51be89 | 784 | (caseblock . ind) (cpp . 0) |
| da4ce263 RS |
785 | (declaration . (+ ind pascal-indent-level)) |
| 786 | (paramlist . (pascal-indent-paramlist t)) | |
| 9f92e5d9 | 787 | (comment . (pascal-indent-comment)) |
| da4ce263 | 788 | (defun . ind) (contexp . ind) |
| 27b53c17 | 789 | (unknown . ind) (string . 0) (progbeg . 0))) |
| da4ce263 | 790 | |
| 1a2b6c52 | 791 | (defun pascal-indent-command () |
| da4ce263 RS |
792 | "Indent for special part of code." |
| 793 | (let* ((indent-str (pascal-calculate-indent)) | |
| 794 | (type (car indent-str)) | |
| 795 | (ind (car (cdr indent-str)))) | |
| 3a3ee445 RS |
796 | (cond ((and (eq type 'paramlist) |
| 797 | (or (memq 'all pascal-auto-lineup) | |
| 798 | (memq 'paramlist pascal-auto-lineup))) | |
| da4ce263 RS |
799 | (pascal-indent-paramlist) |
| 800 | (pascal-indent-paramlist)) | |
| 3a3ee445 RS |
801 | ((and (eq type 'declaration) |
| 802 | (or (memq 'all pascal-auto-lineup) | |
| 803 | (memq 'declaration pascal-auto-lineup))) | |
| da4ce263 | 804 | (pascal-indent-declaration)) |
| 3a3ee445 RS |
805 | ((and (eq type 'case) (not (looking-at "^[ \t]*$")) |
| 806 | (or (memq 'all pascal-auto-lineup) | |
| 807 | (memq 'case pascal-auto-lineup))) | |
| da4ce263 RS |
808 | (pascal-indent-case))) |
| 809 | (if (looking-at "[ \t]+$") | |
| 810 | (skip-chars-forward " \t")))) | |
| 1a2b6c52 RS |
811 | |
| 812 | (defun pascal-indent-line () | |
| da4ce263 RS |
813 | "Indent current line as a Pascal statement." |
| 814 | (let* ((indent-str (pascal-calculate-indent)) | |
| 815 | (type (car indent-str)) | |
| 816 | (ind (car (cdr indent-str)))) | |
| 27b53c17 RS |
817 | ;; Labels should not be indented. |
| 818 | (if (and (looking-at "^[0-9a-zA-Z]+[ \t]*:[^=]") | |
| 819 | (not (eq type 'declaration))) | |
| da4ce263 RS |
820 | (search-forward ":" nil t)) |
| 821 | (delete-horizontal-space) | |
| 27b53c17 RS |
822 | (cond (; Some things should not be indented |
| 823 | (or (and (eq type 'declaration) (looking-at pascal-declaration-re)) | |
| 824 | (eq type 'cpp)) | |
| 825 | ()) | |
| 826 | (; Other things should have no extra indent | |
| 827 | (looking-at pascal-noindent-re) | |
| 828 | (indent-to ind)) | |
| 829 | (; Nested functions should be indented | |
| 830 | (looking-at pascal-defun-re) | |
| 831 | (if (and pascal-indent-nested-functions | |
| 832 | (eq type 'defun)) | |
| 833 | (indent-to (+ ind pascal-indent-level)) | |
| 834 | (indent-to ind))) | |
| 835 | (; But most lines are treated this way | |
| 836 | (indent-to (eval (cdr (assoc type pascal-indent-alist)))) | |
| 837 | )))) | |
| da4ce263 RS |
838 | |
| 839 | (defun pascal-calculate-indent () | |
| 840 | "Calculate the indent of the current Pascal line. | |
| 841 | Return a list of two elements: (INDENT-TYPE INDENT-LEVEL)." | |
| 842 | (save-excursion | |
| a0bd2457 RS |
843 | (let* ((parse-sexp-ignore-comments t) |
| 844 | (oldpos (point)) | |
| da4ce263 | 845 | (state (save-excursion (parse-partial-sexp (point-min) (point)))) |
| 9f51be89 | 846 | (nest 0) (par 0) (complete (looking-at "[ \t]*end\\>")) |
| 27b53c17 RS |
847 | (elsed (looking-at "[ \t]*else\\>")) (funccnt 0) |
| 848 | (did-func (looking-at "[ \t]*\\(procedure\\|function\\)\\>")) | |
| da4ce263 RS |
849 | (type (catch 'nesting |
| 850 | ;; Check if inside a string, comment or parenthesis | |
| 851 | (cond ((nth 3 state) (throw 'nesting 'string)) | |
| 852 | ((nth 4 state) (throw 'nesting 'comment)) | |
| 853 | ((> (car state) 0) | |
| 854 | (goto-char (scan-lists (point) -1 (car state))) | |
| 9f51be89 RS |
855 | (setq par (1+ (current-column)))) |
| 856 | ((save-excursion (beginning-of-line) | |
| 857 | (eq (following-char) ?#)) | |
| 858 | (throw 'nesting 'cpp))) | |
| da4ce263 RS |
859 | ;; Loop until correct indent is found |
| 860 | (while t | |
| 861 | (backward-sexp 1) | |
| 9f51be89 RS |
862 | (cond (;--Escape from case statements |
| 863 | (and (looking-at "[A-Za-z0-9]+[ \t]*:[^=]") | |
| 864 | (not complete) | |
| 865 | (save-excursion (skip-chars-backward " \t") | |
| 866 | (bolp)) | |
| 867 | (= (save-excursion | |
| 868 | (end-of-line) (backward-sexp) (point)) | |
| 869 | (point)) | |
| 870 | (> (save-excursion (goto-char oldpos) | |
| 871 | (beginning-of-line) | |
| 872 | (point)) | |
| 873 | (point))) | |
| 874 | (throw 'nesting 'caseblock)) | |
| 27b53c17 RS |
875 | (;--Beginning of program |
| 876 | (looking-at pascal-progbeg-re) | |
| 877 | (throw 'nesting 'progbeg)) | |
| 878 | (;--No known statements | |
| 879 | (bobp) | |
| 880 | (throw 'nesting 'progbeg)) | |
| 9f51be89 | 881 | (;--Nest block outwards |
| da4ce263 RS |
882 | (looking-at pascal-beg-block-re) |
| 883 | (if (= nest 0) | |
| 884 | (cond ((looking-at "case\\>") | |
| da4ce263 RS |
885 | (throw 'nesting 'case)) |
| 886 | ((looking-at "record\\>") | |
| 887 | (throw 'nesting 'declaration)) | |
| f6807db3 | 888 | (t (throw 'nesting 'block))) |
| 27b53c17 RS |
889 | (if (and (looking-at "record\\>") (= nest 1)) |
| 890 | (setq funccnt (1- funccnt))) | |
| da4ce263 RS |
891 | (setq nest (1- nest)))) |
| 892 | (;--Nest block inwards | |
| 893 | (looking-at pascal-end-block-re) | |
| f6807db3 RS |
894 | (if (and (looking-at "end\\s ") |
| 895 | elsed (not complete)) | |
| 896 | (throw 'nesting 'block)) | |
| 27b53c17 RS |
897 | (if (= nest 0) |
| 898 | (setq funccnt (1+ funccnt))) | |
| da4ce263 RS |
899 | (setq complete t |
| 900 | nest (1+ nest))) | |
| 901 | (;--Defun (or parameter list) | |
| 27b53c17 RS |
902 | (and (looking-at pascal-defun-re) |
| 903 | (progn (setq funccnt (1- funccnt) | |
| 904 | did-func t) | |
| 905 | (or (bolp) (< funccnt 0)))) | |
| 906 | ;; Prevent searching whole buffer | |
| 907 | (if (and (bolp) (>= funccnt 0)) | |
| 908 | (throw 'nesting 'progbeg)) | |
| da4ce263 RS |
909 | (if (= 0 par) |
| 910 | (throw 'nesting 'defun) | |
| 911 | (setq par 0) | |
| 912 | (let ((n 0)) | |
| 913 | (while (re-search-forward | |
| 914 | "\\(\\<record\\>\\)\\|\\<end\\>" | |
| 915 | oldpos t) | |
| 916 | (if (match-end 1) | |
| 917 | (setq n (1+ n)) (setq n (1- n)))) | |
| 918 | (if (> n 0) | |
| 919 | (throw 'nesting 'declaration) | |
| 920 | (throw 'nesting 'paramlist))))) | |
| 921 | (;--Declaration part | |
| 27b53c17 RS |
922 | (and (looking-at pascal-declaration-re) |
| 923 | (not did-func) | |
| 924 | (= funccnt 0)) | |
| f6807db3 RS |
925 | (if (save-excursion |
| 926 | (goto-char oldpos) | |
| 927 | (forward-line -1) | |
| 928 | (looking-at "^[ \t]*$")) | |
| da4ce263 RS |
929 | (throw 'nesting 'unknown) |
| 930 | (throw 'nesting 'declaration))) | |
| 931 | (;--If, else or while statement | |
| 932 | (and (not complete) | |
| 933 | (looking-at pascal-sub-block-re)) | |
| 934 | (throw 'nesting 'block)) | |
| 935 | (;--Found complete statement | |
| 936 | (save-excursion (forward-sexp 1) | |
| 937 | (= (following-char) ?\;)) | |
| 938 | (setq complete t)) | |
| da4ce263 | 939 | ))))) |
| 9f51be89 | 940 | |
| da4ce263 | 941 | ;; Return type of block and indent level. |
| a1506d29 | 942 | (if (> par 0) ; Unclosed Parenthesis |
| da4ce263 RS |
943 | (list 'contexp par) |
| 944 | (list type (pascal-indent-level)))))) | |
| 945 | ||
| 946 | (defun pascal-indent-level () | |
| 947 | "Return the indent-level the current statement has. | |
| 948 | Do not count labels, case-statements or records." | |
| 1a2b6c52 RS |
949 | (save-excursion |
| 950 | (beginning-of-line) | |
| da4ce263 RS |
951 | (if (looking-at "[ \t]*[0-9a-zA-Z]+[ \t]*:[^=]") |
| 952 | (search-forward ":" nil t) | |
| 953 | (if (looking-at ".*=[ \t]*record\\>") | |
| 954 | (search-forward "=" nil t))) | |
| 1a2b6c52 RS |
955 | (skip-chars-forward " \t") |
| 956 | (current-column))) | |
| 957 | ||
| 9f92e5d9 GM |
958 | (defun pascal-indent-comment () |
| 959 | "Return indent for current comment." | |
| 960 | (save-excursion | |
| 961 | (re-search-backward "\\((\\*\\)\\|{" nil t) | |
| 962 | (if (match-beginning 1) | |
| 963 | (1+ (current-column)) | |
| 964 | (current-column)))) | |
| da4ce263 RS |
965 | |
| 966 | (defun pascal-indent-case () | |
| 967 | "Indent within case statements." | |
| a0bd2457 RS |
968 | (let ((savepos (point-marker)) |
| 969 | (end (prog2 | |
| 81aca4f4 RS |
970 | (end-of-line) |
| 971 | (point-marker) | |
| da4ce263 | 972 | (re-search-backward "\\<case\\>" nil t))) |
| 3a3ee445 | 973 | (beg (point)) oldpos |
| da4ce263 RS |
974 | (ind 0)) |
| 975 | ;; Get right indent | |
| f80235e3 | 976 | (while (< (point) end) |
| a1506d29 | 977 | (if (re-search-forward |
| 81aca4f4 RS |
978 | "^[ \t]*[^ \t,:]+[ \t]*\\(,[ \t]*[^ \t,:]+[ \t]*\\)*:" |
| 979 | (marker-position end) 'move) | |
| 980 | (forward-char -1)) | |
| f80235e3 | 981 | (if (< (point) end) |
| 2e952aac RS |
982 | (progn |
| 983 | (delete-horizontal-space) | |
| 984 | (if (> (current-column) ind) | |
| 985 | (setq ind (current-column))) | |
| 986 | (pascal-end-of-statement)))) | |
| da4ce263 | 987 | (goto-char beg) |
| 3a3ee445 | 988 | (setq oldpos (marker-position end)) |
| da4ce263 | 989 | ;; Indent all case statements |
| f80235e3 | 990 | (while (< (point) end) |
| 81aca4f4 | 991 | (if (re-search-forward |
| 9f51be89 | 992 | "^[ \t]*[^][ \t,\\.:]+[ \t]*\\(,[ \t]*[^ \t,:]+[ \t]*\\)*:" |
| 81aca4f4 | 993 | (marker-position end) 'move) |
| da4ce263 RS |
994 | (forward-char -1)) |
| 995 | (indent-to (1+ ind)) | |
| 996 | (if (/= (following-char) ?:) | |
| 997 | () | |
| 998 | (forward-char 1) | |
| 999 | (delete-horizontal-space) | |
| 3a3ee445 RS |
1000 | (insert " ")) |
| 1001 | (setq oldpos (point)) | |
| 1002 | (pascal-end-of-statement)) | |
| a0bd2457 | 1003 | (goto-char savepos))) |
| da4ce263 RS |
1004 | |
| 1005 | (defun pascal-indent-paramlist (&optional arg) | |
| 1006 | "Indent current line in parameterlist. | |
| 1007 | If optional arg is non-nil, just return the | |
| 1008 | indent of the current line in parameterlist." | |
| 1a2b6c52 | 1009 | (save-excursion |
| da4ce263 RS |
1010 | (let* ((oldpos (point)) |
| 1011 | (stpos (progn (goto-char (scan-lists (point) -1 1)) (point))) | |
| 1012 | (stcol (1+ (current-column))) | |
| a1506d29 | 1013 | (edpos (progn (pascal-declaration-end) |
| da4ce263 RS |
1014 | (search-backward ")" (pascal-get-beg-of-line) t) |
| 1015 | (point))) | |
| 1016 | (usevar (re-search-backward "\\<var\\>" stpos t))) | |
| 1017 | (if arg (progn | |
| 1018 | ;; If arg, just return indent | |
| 1019 | (goto-char oldpos) | |
| 1020 | (beginning-of-line) | |
| 1021 | (if (or (not usevar) (looking-at "[ \t]*var\\>")) | |
| 1022 | stcol (+ 4 stcol))) | |
| 1023 | (goto-char stpos) | |
| 1024 | (forward-char 1) | |
| 1025 | (delete-horizontal-space) | |
| 1026 | (if (and usevar (not (looking-at "var\\>"))) | |
| 1027 | (indent-to (+ 4 stcol))) | |
| 1028 | (pascal-indent-declaration nil stpos edpos))))) | |
| 1029 | ||
| 1030 | (defun pascal-indent-declaration (&optional arg start end) | |
| 1031 | "Indent current lines as declaration, lining up the `:'s or `='s." | |
| 1032 | (let ((pos (point-marker))) | |
| 1033 | (if (and (not (or arg start)) (not (pascal-declaration-beg))) | |
| 1034 | () | |
| a1506d29 | 1035 | (let ((lineup (if (or (looking-at "\\<var\\>\\|\\<record\\>") arg start) |
| da4ce263 RS |
1036 | ":" "=")) |
| 1037 | (stpos (if start start | |
| 1038 | (forward-word 2) (backward-word 1) (point))) | |
| 1039 | (edpos (set-marker (make-marker) | |
| 1040 | (if end end | |
| 1041 | (max (progn (pascal-declaration-end) | |
| 1042 | (point)) | |
| 1043 | pos)))) | |
| 1044 | ind) | |
| 1045 | ||
| 1046 | (goto-char stpos) | |
| 1047 | ;; Indent lines in record block | |
| 1048 | (if arg | |
| f80235e3 | 1049 | (while (<= (point) edpos) |
| da4ce263 RS |
1050 | (beginning-of-line) |
| 1051 | (delete-horizontal-space) | |
| 1052 | (if (looking-at "end\\>") | |
| 1053 | (indent-to arg) | |
| 1054 | (indent-to (+ arg pascal-indent-level))) | |
| 1055 | (forward-line 1))) | |
| 1056 | ||
| 1057 | ;; Do lineup | |
| 1058 | (setq ind (pascal-get-lineup-indent stpos edpos lineup)) | |
| 1059 | (goto-char stpos) | |
| f80235e3 | 1060 | (while (and (<= (point) edpos) (not (eobp))) |
| da4ce263 RS |
1061 | (if (search-forward lineup (pascal-get-end-of-line) 'move) |
| 1062 | (forward-char -1)) | |
| 1063 | (delete-horizontal-space) | |
| 1064 | (indent-to ind) | |
| 1065 | (if (not (looking-at lineup)) | |
| 1066 | (forward-line 1) ; No more indent if there is no : or = | |
| 1067 | (forward-char 1) | |
| 1068 | (delete-horizontal-space) | |
| 1069 | (insert " ") | |
| 1070 | ;; Indent record block | |
| 1071 | (if (looking-at "record\\>") | |
| 1072 | (pascal-indent-declaration (current-column))) | |
| 1073 | (forward-line 1))))) | |
| 1074 | ||
| 1075 | ;; If arg - move point | |
| 1076 | (if arg (forward-line -1) | |
| f80235e3 | 1077 | (goto-char pos)))) |
| da4ce263 RS |
1078 | |
| 1079 | ; "Return the indent level that will line up several lines within the region | |
| 1080 | ;from b to e nicely. The lineup string is str." | |
| 1081 | (defun pascal-get-lineup-indent (b e str) | |
| 1082 | (save-excursion | |
| 1083 | (let ((ind 0) | |
| 27b53c17 | 1084 | (reg (concat str "\\|\\(\\<record\\>\\)\\|" pascal-defun-re))) |
| da4ce263 RS |
1085 | (goto-char b) |
| 1086 | ;; Get rightmost position | |
| 1087 | (while (< (point) e) | |
| 27b53c17 RS |
1088 | (and (re-search-forward reg (min e (pascal-get-end-of-line 2)) 'move) |
| 1089 | (cond ((match-beginning 1) | |
| 1090 | ;; Skip record blocks | |
| 1091 | (pascal-declaration-end)) | |
| 1092 | ((match-beginning 2) | |
| 1093 | ;; We have entered a new procedure. Exit. | |
| 1094 | (goto-char e)) | |
| 1095 | (t | |
| 1096 | (goto-char (match-beginning 0)) | |
| 1097 | (skip-chars-backward " \t") | |
| 1098 | (if (> (current-column) ind) | |
| 1099 | (setq ind (current-column))) | |
| 1100 | (goto-char (match-end 0)) | |
| 1101 | (end-of-line) | |
| 1102 | )))) | |
| da4ce263 RS |
1103 | ;; In case no lineup was found |
| 1104 | (if (> ind 0) | |
| 1105 | (1+ ind) | |
| 1106 | ;; No lineup-string found | |
| 1107 | (goto-char b) | |
| 1108 | (end-of-line) | |
| 1109 | (skip-chars-backward " \t") | |
| 1110 | (1+ (current-column)))))) | |
| a1506d29 | 1111 | |
| da4ce263 RS |
1112 | \f |
| 1113 | ||
| 1114 | ;;; | |
| 1115 | ;;; Completion | |
| 1116 | ;;; | |
| 9566dc15 RS |
1117 | (defvar pascal-str nil) |
| 1118 | (defvar pascal-all nil) | |
| 1119 | (defvar pascal-pred nil) | |
| 1120 | (defvar pascal-buffer-to-use nil) | |
| 1121 | (defvar pascal-flag nil) | |
| 1122 | ||
| da4ce263 RS |
1123 | (defun pascal-string-diff (str1 str2) |
| 1124 | "Return index of first letter where STR1 and STR2 differs." | |
| 1125 | (catch 'done | |
| 1126 | (let ((diff 0)) | |
| 1127 | (while t | |
| 1128 | (if (or (> (1+ diff) (length str1)) | |
| 1129 | (> (1+ diff) (length str2))) | |
| 1130 | (throw 'done diff)) | |
| 1131 | (or (equal (aref str1 diff) (aref str2 diff)) | |
| 1132 | (throw 'done diff)) | |
| 1133 | (setq diff (1+ diff)))))) | |
| 1134 | ||
| 1135 | ;; Calculate all possible completions for functions if argument is `function', | |
| 1136 | ;; completions for procedures if argument is `procedure' or both functions and | |
| 1137 | ;; procedures otherwise. | |
| 1138 | ||
| 1139 | (defun pascal-func-completion (type) | |
| 1140 | ;; Build regular expression for function/procedure names | |
| 9566dc15 RS |
1141 | (if (string= pascal-str "") |
| 1142 | (setq pascal-str "[a-zA-Z_]")) | |
| 1143 | (let ((pascal-str (concat (cond | |
| 1144 | ((eq type 'procedure) "\\<\\(procedure\\)\\s +") | |
| 1145 | ((eq type 'function) "\\<\\(function\\)\\s +") | |
| 1146 | (t "\\<\\(function\\|procedure\\)\\s +")) | |
| 1147 | "\\<\\(" pascal-str "[a-zA-Z0-9_.]*\\)\\>")) | |
| da4ce263 | 1148 | match) |
| a1506d29 | 1149 | |
| da4ce263 RS |
1150 | (if (not (looking-at "\\<\\(function\\|procedure\\)\\>")) |
| 1151 | (re-search-backward "\\<\\(function\\|procedure\\)\\>" nil t)) | |
| 1152 | (forward-char 1) | |
| 1153 | ||
| 1154 | ;; Search through all reachable functions | |
| 1155 | (while (pascal-beg-of-defun) | |
| 9566dc15 | 1156 | (if (re-search-forward pascal-str (pascal-get-end-of-line) t) |
| da4ce263 RS |
1157 | (progn (setq match (buffer-substring (match-beginning 2) |
| 1158 | (match-end 2))) | |
| 9566dc15 RS |
1159 | (if (or (null pascal-pred) |
| 1160 | (funcall pascal-pred match)) | |
| 1161 | (setq pascal-all (cons match pascal-all))))) | |
| da4ce263 RS |
1162 | (goto-char (match-beginning 0))))) |
| 1163 | ||
| 1164 | (defun pascal-get-completion-decl () | |
| 1165 | ;; Macro for searching through current declaration (var, type or const) | |
| f80235e3 | 1166 | ;; for matches of `str' and adding the occurrence to `all' |
| da4ce263 RS |
1167 | (let ((end (save-excursion (pascal-declaration-end) |
| 1168 | (point))) | |
| 1169 | match) | |
| 1170 | ;; Traverse lines | |
| 1171 | (while (< (point) end) | |
| 1172 | (if (re-search-forward "[:=]" (pascal-get-end-of-line) t) | |
| 1173 | ;; Traverse current line | |
| a1506d29 JB |
1174 | (while (and (re-search-backward |
| 1175 | (concat "\\((\\|\\<\\(var\\|type\\|const\\)\\>\\)\\|" | |
| da4ce263 RS |
1176 | pascal-symbol-re) |
| 1177 | (pascal-get-beg-of-line) t) | |
| 1178 | (not (match-end 1))) | |
| 1179 | (setq match (buffer-substring (match-beginning 0) (match-end 0))) | |
| 9566dc15 RS |
1180 | (if (string-match (concat "\\<" pascal-str) match) |
| 1181 | (if (or (null pascal-pred) | |
| 1182 | (funcall pascal-pred match)) | |
| 1183 | (setq pascal-all (cons match pascal-all)))))) | |
| da4ce263 RS |
1184 | (if (re-search-forward "\\<record\\>" (pascal-get-end-of-line) t) |
| 1185 | (pascal-declaration-end) | |
| 1186 | (forward-line 1))))) | |
| 1187 | ||
| 1188 | (defun pascal-type-completion () | |
| 1189 | "Calculate all possible completions for types." | |
| 1190 | (let ((start (point)) | |
| 1191 | goon) | |
| 1192 | ;; Search for all reachable type declarations | |
| 1193 | (while (or (pascal-beg-of-defun) | |
| 1194 | (setq goon (not goon))) | |
| 1195 | (save-excursion | |
| 1196 | (if (and (< start (prog1 (save-excursion (pascal-end-of-defun) | |
| 1197 | (point)) | |
| 1198 | (forward-char 1))) | |
| 1199 | (re-search-forward | |
| 3a3ee445 | 1200 | "\\<type\\>\\|\\<\\(begin\\|function\\|procedure\\)\\>" |
| da4ce263 RS |
1201 | start t) |
| 1202 | (not (match-end 1))) | |
| 1203 | ;; Check current type declaration | |
| 1204 | (pascal-get-completion-decl)))))) | |
| 1205 | ||
| 1206 | (defun pascal-var-completion () | |
| 1207 | "Calculate all possible completions for variables (or constants)." | |
| 1208 | (let ((start (point)) | |
| 1209 | goon twice) | |
| 1210 | ;; Search for all reachable var declarations | |
| 1211 | (while (or (pascal-beg-of-defun) | |
| 1212 | (setq goon (not goon))) | |
| 1213 | (save-excursion | |
| 1214 | (if (> start (prog1 (save-excursion (pascal-end-of-defun) | |
| 1215 | (point)))) | |
| 4a6fd75f | 1216 | () ; Declarations not reachable |
| da4ce263 RS |
1217 | (if (search-forward "(" (pascal-get-end-of-line) t) |
| 1218 | ;; Check parameterlist | |
| 1219 | (pascal-get-completion-decl)) | |
| 1220 | (setq twice 2) | |
| 1221 | (while (>= (setq twice (1- twice)) 0) | |
| 1222 | (cond ((and (re-search-forward | |
| 1223 | (concat "\\<\\(var\\|const\\)\\>\\|" | |
| 1224 | "\\<\\(begin\\|function\\|procedure\\)\\>") | |
| 1225 | start t) | |
| 1226 | (not (match-end 2))) | |
| 1227 | ;; Check var/const declarations | |
| 1228 | (pascal-get-completion-decl)) | |
| 1229 | ((match-end 2) | |
| 1230 | (setq twice 0))))))))) | |
| 1231 | ||
| 1232 | ||
| 1233 | (defun pascal-keyword-completion (keyword-list) | |
| 1234 | "Give list of all possible completions of keywords in KEYWORD-LIST." | |
| a1506d29 | 1235 | (mapcar '(lambda (s) |
| 9566dc15 RS |
1236 | (if (string-match (concat "\\<" pascal-str) s) |
| 1237 | (if (or (null pascal-pred) | |
| 1238 | (funcall pascal-pred s)) | |
| 1239 | (setq pascal-all (cons s pascal-all))))) | |
| da4ce263 RS |
1240 | keyword-list)) |
| 1241 | ||
| 1242 | ;; Function passed to completing-read, try-completion or | |
| 1243 | ;; all-completions to get completion on STR. If predicate is non-nil, | |
| 1244 | ;; it must be a function to be called for every match to check if this | |
| 1245 | ;; should really be a match. If flag is t, the function returns a list | |
| 1246 | ;; of all possible completions. If it is nil it returns a string, the | |
| 1247 | ;; longest possible completion, or t if STR is an exact match. If flag | |
| 1248 | ;; is 'lambda, the function returns t if STR is an exact match, nil | |
| 1249 | ;; otherwise. | |
| 1250 | ||
| 9566dc15 | 1251 | (defun pascal-completion (pascal-str pascal-pred pascal-flag) |
| da4ce263 | 1252 | (save-excursion |
| 9566dc15 | 1253 | (let ((pascal-all nil)) |
| da4ce263 | 1254 | ;; Set buffer to use for searching labels. This should be set |
| 4a6fd75f | 1255 | ;; within functions which use pascal-completions |
| 9566dc15 | 1256 | (set-buffer pascal-buffer-to-use) |
| da4ce263 RS |
1257 | |
| 1258 | ;; Determine what should be completed | |
| 1259 | (let ((state (car (pascal-calculate-indent)))) | |
| 1260 | (cond (;--Within a declaration or parameterlist | |
| 1261 | (or (eq state 'declaration) (eq state 'paramlist) | |
| 1262 | (and (eq state 'defun) | |
| 1263 | (save-excursion | |
| 3a3ee445 RS |
1264 | (re-search-backward ")[ \t]*:" |
| 1265 | (pascal-get-beg-of-line) t)))) | |
| da4ce263 RS |
1266 | (if (or (eq state 'paramlist) (eq state 'defun)) |
| 1267 | (pascal-beg-of-defun)) | |
| 1268 | (pascal-type-completion) | |
| 1269 | (pascal-keyword-completion pascal-type-keywords)) | |
| 1270 | (;--Starting a new statement | |
| 3a3ee445 RS |
1271 | (and (not (eq state 'contexp)) |
| 1272 | (save-excursion | |
| 1273 | (skip-chars-backward "a-zA-Z0-9_.") | |
| 1274 | (backward-sexp 1) | |
| 1275 | (or (looking-at pascal-nosemi-re) | |
| 1276 | (progn | |
| 1277 | (forward-sexp 1) | |
| 1278 | (looking-at "\\s *\\(;\\|:[^=]\\)"))))) | |
| 1279 | (save-excursion (pascal-var-completion)) | |
| 1280 | (pascal-func-completion 'procedure) | |
| 1281 | (pascal-keyword-completion pascal-start-keywords)) | |
| da4ce263 RS |
1282 | (t;--Anywhere else |
| 1283 | (save-excursion (pascal-var-completion)) | |
| 1284 | (pascal-func-completion 'function) | |
| 81aca4f4 | 1285 | (pascal-keyword-completion pascal-separator-keywords)))) |
| a1506d29 | 1286 | |
| da4ce263 RS |
1287 | ;; Now we have built a list of all matches. Give response to caller |
| 1288 | (pascal-completion-response)))) | |
| 1289 | ||
| 1290 | (defun pascal-completion-response () | |
| 9566dc15 | 1291 | (cond ((or (equal pascal-flag 'lambda) (null pascal-flag)) |
| da4ce263 | 1292 | ;; This was not called by all-completions |
| 9566dc15 | 1293 | (if (null pascal-all) |
| da4ce263 RS |
1294 | ;; Return nil if there was no matching label |
| 1295 | nil | |
| 1296 | ;; Get longest string common in the labels | |
| 9566dc15 RS |
1297 | (let* ((elm (cdr pascal-all)) |
| 1298 | (match (car pascal-all)) | |
| da4ce263 | 1299 | (min (length match)) |
| f80235e3 | 1300 | tmp) |
| 9566dc15 | 1301 | (if (string= match pascal-str) |
| da4ce263 RS |
1302 | ;; Return t if first match was an exact match |
| 1303 | (setq match t) | |
| 1304 | (while (not (null elm)) | |
| 1305 | ;; Find longest common string | |
| 1306 | (if (< (setq tmp (pascal-string-diff match (car elm))) min) | |
| 1307 | (progn | |
| 1308 | (setq min tmp) | |
| 1309 | (setq match (substring match 0 min)))) | |
| 1310 | ;; Terminate with match=t if this is an exact match | |
| 9566dc15 | 1311 | (if (string= (car elm) pascal-str) |
| da4ce263 RS |
1312 | (progn |
| 1313 | (setq match t) | |
| 1314 | (setq elm nil)) | |
| 1315 | (setq elm (cdr elm))))) | |
| 1316 | ;; If this is a test just for exact match, return nil ot t | |
| 9566dc15 | 1317 | (if (and (equal pascal-flag 'lambda) (not (equal match 't))) |
| da4ce263 RS |
1318 | nil |
| 1319 | match)))) | |
| 1320 | ;; If flag is t, this was called by all-completions. Return | |
| 1321 | ;; list of all possible completions | |
| 9566dc15 RS |
1322 | (pascal-flag |
| 1323 | pascal-all))) | |
| da4ce263 RS |
1324 | |
| 1325 | (defvar pascal-last-word-numb 0) | |
| 1326 | (defvar pascal-last-word-shown nil) | |
| 1327 | (defvar pascal-last-completions nil) | |
| 1328 | ||
| 1329 | (defun pascal-complete-word () | |
| 1330 | "Complete word at current point. | |
| 1331 | \(See also `pascal-toggle-completions', `pascal-type-keywords', | |
| 81aca4f4 | 1332 | `pascal-start-keywords' and `pascal-separator-keywords'.)" |
| da4ce263 RS |
1333 | (interactive) |
| 1334 | (let* ((b (save-excursion (skip-chars-backward "a-zA-Z0-9_") (point))) | |
| 1335 | (e (save-excursion (skip-chars-forward "a-zA-Z0-9_") (point))) | |
| 9566dc15 | 1336 | (pascal-str (buffer-substring b e)) |
| da4ce263 | 1337 | ;; The following variable is used in pascal-completion |
| 9566dc15 | 1338 | (pascal-buffer-to-use (current-buffer)) |
| da4ce263 | 1339 | (allcomp (if (and pascal-toggle-completions |
| 9566dc15 | 1340 | (string= pascal-last-word-shown pascal-str)) |
| da4ce263 | 1341 | pascal-last-completions |
| 9566dc15 | 1342 | (all-completions pascal-str 'pascal-completion))) |
| da4ce263 RS |
1343 | (match (if pascal-toggle-completions |
| 1344 | "" (try-completion | |
| 9566dc15 RS |
1345 | pascal-str (mapcar '(lambda (elm) |
| 1346 | (cons elm 0)) allcomp))))) | |
| da4ce263 RS |
1347 | ;; Delete old string |
| 1348 | (delete-region b e) | |
| 1349 | ||
| 1350 | ;; Toggle-completions inserts whole labels | |
| 1351 | (if pascal-toggle-completions | |
| 1a2b6c52 | 1352 | (progn |
| da4ce263 RS |
1353 | ;; Update entry number in list |
| 1354 | (setq pascal-last-completions allcomp | |
| a1506d29 | 1355 | pascal-last-word-numb |
| da4ce263 RS |
1356 | (if (>= pascal-last-word-numb (1- (length allcomp))) |
| 1357 | 0 | |
| 1358 | (1+ pascal-last-word-numb))) | |
| 1359 | (setq pascal-last-word-shown (elt allcomp pascal-last-word-numb)) | |
| 1360 | ;; Display next match or same string if no match was found | |
| 1361 | (if (not (null allcomp)) | |
| 1362 | (insert "" pascal-last-word-shown) | |
| 9566dc15 | 1363 | (insert "" pascal-str) |
| da4ce263 | 1364 | (message "(No match)"))) |
| 4a6fd75f | 1365 | ;; The other form of completion does not necessarily do that. |
| da4ce263 RS |
1366 | |
| 1367 | ;; Insert match if found, or the original string if no match | |
| 1368 | (if (or (null match) (equal match 't)) | |
| 9566dc15 | 1369 | (progn (insert "" pascal-str) |
| da4ce263 RS |
1370 | (message "(No match)")) |
| 1371 | (insert "" match)) | |
| 1372 | ;; Give message about current status of completion | |
| 1373 | (cond ((equal match 't) | |
| 1374 | (if (not (null (cdr allcomp))) | |
| 1375 | (message "(Complete but not unique)") | |
| 1376 | (message "(Sole completion)"))) | |
| a1506d29 | 1377 | ;; Display buffer if the current completion didn't help |
| da4ce263 | 1378 | ;; on completing the label. |
| 9566dc15 RS |
1379 | ((and (not (null (cdr allcomp))) (= (length pascal-str) |
| 1380 | (length match))) | |
| da4ce263 RS |
1381 | (with-output-to-temp-buffer "*Completions*" |
| 1382 | (display-completion-list allcomp)) | |
| 1383 | ;; Wait for a keypress. Then delete *Completion* window | |
| 1384 | (momentary-string-display "" (point)) | |
| 1385 | (delete-window (get-buffer-window (get-buffer "*Completions*"))) | |
| 1386 | ))))) | |
| 1387 | ||
| 1388 | (defun pascal-show-completions () | |
| 1389 | "Show all possible completions at current point." | |
| 1390 | (interactive) | |
| 1391 | (let* ((b (save-excursion (skip-chars-backward "a-zA-Z0-9_") (point))) | |
| 1392 | (e (save-excursion (skip-chars-forward "a-zA-Z0-9_") (point))) | |
| 9566dc15 | 1393 | (pascal-str (buffer-substring b e)) |
| da4ce263 | 1394 | ;; The following variable is used in pascal-completion |
| 9566dc15 | 1395 | (pascal-buffer-to-use (current-buffer)) |
| da4ce263 | 1396 | (allcomp (if (and pascal-toggle-completions |
| 9566dc15 | 1397 | (string= pascal-last-word-shown pascal-str)) |
| da4ce263 | 1398 | pascal-last-completions |
| 9566dc15 | 1399 | (all-completions pascal-str 'pascal-completion)))) |
| da4ce263 RS |
1400 | ;; Show possible completions in a temporary buffer. |
| 1401 | (with-output-to-temp-buffer "*Completions*" | |
| 1402 | (display-completion-list allcomp)) | |
| 1403 | ;; Wait for a keypress. Then delete *Completion* window | |
| 1404 | (momentary-string-display "" (point)) | |
| 1405 | (delete-window (get-buffer-window (get-buffer "*Completions*"))))) | |
| 1406 | ||
| 1407 | ||
| 1408 | (defun pascal-get-default-symbol () | |
| 1409 | "Return symbol around current point as a string." | |
| 1410 | (save-excursion | |
| 1411 | (buffer-substring (progn | |
| 1412 | (skip-chars-backward " \t") | |
| 1413 | (skip-chars-backward "a-zA-Z0-9_") | |
| 1414 | (point)) | |
| 1415 | (progn | |
| 1416 | (skip-chars-forward "a-zA-Z0-9_") | |
| 1417 | (point))))) | |
| 1418 | ||
| 1419 | (defun pascal-build-defun-re (str &optional arg) | |
| 1420 | "Return function/procedure starting with STR as regular expression. | |
| 1421 | With optional second arg non-nil, STR is the complete name of the instruction." | |
| 1422 | (if arg | |
| 1423 | (concat "^\\(function\\|procedure\\)[ \t]+\\(" str "\\)\\>") | |
| 1424 | (concat "^\\(function\\|procedure\\)[ \t]+\\(" str "[a-zA-Z0-9_]*\\)\\>"))) | |
| 1425 | ||
| 1426 | ;; Function passed to completing-read, try-completion or | |
| 1427 | ;; all-completions to get completion on any function name. If | |
| 1428 | ;; predicate is non-nil, it must be a function to be called for every | |
| 1429 | ;; match to check if this should really be a match. If flag is t, the | |
| 1430 | ;; function returns a list of all possible completions. If it is nil | |
| 1431 | ;; it returns a string, the longest possible completion, or t if STR | |
| 1432 | ;; is an exact match. If flag is 'lambda, the function returns t if | |
| 1433 | ;; STR is an exact match, nil otherwise. | |
| 1434 | ||
| 9566dc15 | 1435 | (defun pascal-comp-defun (pascal-str pascal-pred pascal-flag) |
| da4ce263 | 1436 | (save-excursion |
| 9566dc15 | 1437 | (let ((pascal-all nil) |
| da4ce263 RS |
1438 | match) |
| 1439 | ||
| 1440 | ;; Set buffer to use for searching labels. This should be set | |
| 4a6fd75f | 1441 | ;; within functions which use pascal-completions |
| 9566dc15 | 1442 | (set-buffer pascal-buffer-to-use) |
| da4ce263 | 1443 | |
| 9566dc15 | 1444 | (let ((pascal-str pascal-str)) |
| da4ce263 | 1445 | ;; Build regular expression for functions |
| 9566dc15 RS |
1446 | (if (string= pascal-str "") |
| 1447 | (setq pascal-str (pascal-build-defun-re "[a-zA-Z_]")) | |
| 1448 | (setq pascal-str (pascal-build-defun-re pascal-str))) | |
| da4ce263 | 1449 | (goto-char (point-min)) |
| a1506d29 | 1450 | |
| da4ce263 | 1451 | ;; Build a list of all possible completions |
| 9566dc15 | 1452 | (while (re-search-forward pascal-str nil t) |
| da4ce263 | 1453 | (setq match (buffer-substring (match-beginning 2) (match-end 2))) |
| 9566dc15 RS |
1454 | (if (or (null pascal-pred) |
| 1455 | (funcall pascal-pred match)) | |
| 1456 | (setq pascal-all (cons match pascal-all))))) | |
| da4ce263 RS |
1457 | |
| 1458 | ;; Now we have built a list of all matches. Give response to caller | |
| 1459 | (pascal-completion-response)))) | |
| 1460 | ||
| 1461 | (defun pascal-goto-defun () | |
| 1462 | "Move to specified Pascal function/procedure. | |
| 1463 | The default is a name found in the buffer around point." | |
| 1464 | (interactive) | |
| 1465 | (let* ((default (pascal-get-default-symbol)) | |
| 1466 | ;; The following variable is used in pascal-comp-function | |
| 9566dc15 | 1467 | (pascal-buffer-to-use (current-buffer)) |
| da4ce263 RS |
1468 | (default (if (pascal-comp-defun default nil 'lambda) |
| 1469 | default "")) | |
| 1470 | (label (if (not (string= default "")) | |
| 1471 | ;; Do completion with default | |
| 1472 | (completing-read (concat "Label: (default " default ") ") | |
| 1473 | 'pascal-comp-defun nil t "") | |
| 1474 | ;; There is no default value. Complete without it | |
| 1475 | (completing-read "Label: " | |
| 1476 | 'pascal-comp-defun nil t "")))) | |
| 1477 | ;; If there was no response on prompt, use default value | |
| 1478 | (if (string= label "") | |
| 1479 | (setq label default)) | |
| 1480 | ;; Goto right place in buffer if label is not an empty string | |
| 1481 | (or (string= label "") | |
| 1482 | (progn | |
| 1483 | (goto-char (point-min)) | |
| 1484 | (re-search-forward (pascal-build-defun-re label t)) | |
| 1485 | (beginning-of-line))))) | |
| 1486 | ||
| 1487 | \f | |
| 1488 | ||
| 1489 | ;;; | |
| 1490 | ;;; Pascal-outline-mode | |
| 1491 | ;;; | |
| 1492 | (defvar pascal-outline-map nil "Keymap used in Pascal Outline mode.") | |
| 1493 | ||
| 1494 | (if pascal-outline-map | |
| 1495 | nil | |
| 1496 | (if (boundp 'set-keymap-name) | |
| 1497 | (set-keymap-name pascal-outline-map 'pascal-outline-map)) | |
| 1498 | (if (not (boundp 'set-keymap-parent)) | |
| 1499 | (setq pascal-outline-map (copy-keymap pascal-mode-map)) | |
| 1500 | (setq pascal-outline-map (make-sparse-keymap)) | |
| 1501 | (set-keymap-parent pascal-outline-map pascal-mode-map)) | |
| 9f51be89 RS |
1502 | (define-key pascal-outline-map "\M-\C-a" 'pascal-outline-prev-defun) |
| 1503 | (define-key pascal-outline-map "\M-\C-e" 'pascal-outline-next-defun) | |
| 7383caaa | 1504 | (define-key pascal-outline-map "\C-c\C-d" 'pascal-outline-goto-defun) |
| da4ce263 RS |
1505 | (define-key pascal-outline-map "\C-c\C-s" 'pascal-show-all) |
| 1506 | (define-key pascal-outline-map "\C-c\C-h" 'pascal-hide-other-defuns)) | |
| 1507 | ||
| 1508 | (defvar pascal-outline-mode nil "Non-nil while using Pascal Outline mode.") | |
| 1509 | (make-variable-buffer-local 'pascal-outline-mode) | |
| 1510 | (set-default 'pascal-outline-mode nil) | |
| 1511 | (if (not (assoc 'pascal-outline-mode minor-mode-alist)) | |
| 1512 | (setq minor-mode-alist (append minor-mode-alist | |
| 1513 | (list '(pascal-outline-mode " Outl"))))) | |
| 1514 | ||
| 1515 | (defun pascal-outline (&optional arg) | |
| 1516 | "Outline-line minor mode for Pascal mode. | |
| 1517 | When in Pascal Outline mode, portions | |
| 1518 | of the text being edited may be made invisible. \\<pascal-outline-map> | |
| 1519 | ||
| 1520 | Pascal Outline mode provides some additional commands. | |
| 1521 | ||
| 1522 | \\[pascal-outline-prev-defun]\ | |
| 1523 | \t- Move to previous function/procedure, hiding everything else. | |
| 1524 | \\[pascal-outline-next-defun]\ | |
| 1525 | \t- Move to next function/procedure, hiding everything else. | |
| 1526 | \\[pascal-outline-goto-defun]\ | |
| 1527 | \t- Goto function/procedure prompted for in minibuffer, | |
| 1528 | \t hide all other functions. | |
| 1529 | \\[pascal-show-all]\t- Show the whole buffer. | |
| 1530 | \\[pascal-hide-other-defuns]\ | |
| 1531 | \t- Hide everything but the current function (function under the cursor). | |
| 1532 | \\[pascal-outline]\t- Leave pascal-outline-mode." | |
| 1533 | (interactive "P") | |
| 1534 | (setq pascal-outline-mode | |
| 1535 | (if (null arg) (not pascal-outline-mode) t)) | |
| 1536 | (if (boundp 'redraw-mode-line) | |
| 1537 | (redraw-mode-line)) | |
| 1538 | (if pascal-outline-mode | |
| 1539 | (progn | |
| 1540 | (setq selective-display t) | |
| 1541 | (use-local-map pascal-outline-map)) | |
| 1542 | (progn | |
| 1543 | (setq selective-display nil) | |
| 1544 | (pascal-show-all) | |
| 1545 | (use-local-map pascal-mode-map)))) | |
| 1546 | ||
| 9566dc15 | 1547 | (defun pascal-outline-change (b e pascal-flag) |
| da4ce263 RS |
1548 | (let ((modp (buffer-modified-p))) |
| 1549 | (unwind-protect | |
| a1506d29 | 1550 | (subst-char-in-region b e (if (= pascal-flag ?\n) |
| 9566dc15 | 1551 | ?\^M ?\n) pascal-flag) |
| da4ce263 RS |
1552 | (set-buffer-modified-p modp)))) |
| 1553 | ||
| 1554 | (defun pascal-show-all () | |
| 1555 | "Show all of the text in the buffer." | |
| 1556 | (interactive) | |
| 1557 | (pascal-outline-change (point-min) (point-max) ?\n)) | |
| 1558 | ||
| 1559 | (defun pascal-hide-other-defuns () | |
| 1560 | "Show only the current defun." | |
| 1561 | (interactive) | |
| 1562 | (save-excursion | |
| 1563 | (let ((beg (progn (if (not (looking-at "\\(function\\|procedure\\)\\>")) | |
| 1564 | (pascal-beg-of-defun)) | |
| 1565 | (point))) | |
| 1566 | (end (progn (pascal-end-of-defun) | |
| 1567 | (backward-sexp 1) | |
| 1568 | (search-forward "\n\\|\^M" nil t) | |
| 1569 | (point))) | |
| 1570 | (opoint (point-min))) | |
| 1571 | (goto-char (point-min)) | |
| 1572 | ||
| 1573 | ;; Hide all functions before current function | |
| 1574 | (while (re-search-forward "^\\(function\\|procedure\\)\\>" beg 'move) | |
| 1575 | (pascal-outline-change opoint (1- (match-beginning 0)) ?\^M) | |
| 1576 | (setq opoint (point)) | |
| 1577 | ;; Functions may be nested | |
| 1578 | (if (> (progn (pascal-end-of-defun) (point)) beg) | |
| 1579 | (goto-char opoint))) | |
| 1580 | (if (> beg opoint) | |
| 1581 | (pascal-outline-change opoint (1- beg) ?\^M)) | |
| 1582 | ||
| 1583 | ;; Show current function | |
| 1584 | (pascal-outline-change beg end ?\n) | |
| 1585 | ;; Hide nested functions | |
| 1586 | (forward-char 1) | |
| 1587 | (while (re-search-forward "^\\(function\\|procedure\\)\\>" end 'move) | |
| 1588 | (setq opoint (point)) | |
| 1589 | (pascal-end-of-defun) | |
| 1590 | (pascal-outline-change opoint (point) ?\^M)) | |
| 1591 | ||
| 1592 | (goto-char end) | |
| 1593 | (setq opoint end) | |
| 1594 | ||
| 1595 | ;; Hide all function after current function | |
| 1596 | (while (re-search-forward "^\\(function\\|procedure\\)\\>" nil 'move) | |
| 1597 | (pascal-outline-change opoint (1- (match-beginning 0)) ?\^M) | |
| 1598 | (setq opoint (point)) | |
| 1599 | (pascal-end-of-defun)) | |
| 1600 | (pascal-outline-change opoint (point-max) ?\^M) | |
| 1601 | ||
| 1602 | ;; Hide main program | |
| 1603 | (if (< (progn (forward-line -1) (point)) end) | |
| 1a2b6c52 | 1604 | (progn |
| da4ce263 RS |
1605 | (goto-char beg) |
| 1606 | (pascal-end-of-defun) | |
| 1607 | (backward-sexp 1) | |
| 1608 | (pascal-outline-change (point) (point-max) ?\^M)))))) | |
| 1a2b6c52 | 1609 | |
| da4ce263 RS |
1610 | (defun pascal-outline-next-defun () |
| 1611 | "Move to next function/procedure, hiding all others." | |
| 1612 | (interactive) | |
| 1613 | (pascal-end-of-defun) | |
| 1614 | (pascal-hide-other-defuns)) | |
| 1615 | ||
| 1616 | (defun pascal-outline-prev-defun () | |
| 1617 | "Move to previous function/procedure, hiding all others." | |
| 1618 | (interactive) | |
| 1619 | (pascal-beg-of-defun) | |
| 1620 | (pascal-hide-other-defuns)) | |
| 1621 | ||
| 1622 | (defun pascal-outline-goto-defun () | |
| 1623 | "Move to specified function/procedure, hiding all others." | |
| 1624 | (interactive) | |
| 1625 | (pascal-goto-defun) | |
| 1626 | (pascal-hide-other-defuns)) | |
| 1a2b6c52 | 1627 | |
| 896546cd RS |
1628 | (provide 'pascal) |
| 1629 | ||
| ab5796a9 | 1630 | ;;; arch-tag: 04535136-fd93-40b4-a505-c9bebdc051f5 |
| da4ce263 | 1631 | ;;; pascal.el ends here |