| 1 | ;;; cc-langs.el --- language specific settings for CC Mode -*- coding: utf-8 -*- |
| 2 | |
| 3 | ;; Copyright (C) 1985, 1987, 1992-2013 Free Software Foundation, Inc. |
| 4 | |
| 5 | ;; Authors: 2002- Alan Mackenzie |
| 6 | ;; 1998- Martin Stjernholm |
| 7 | ;; 1992-1999 Barry A. Warsaw |
| 8 | ;; 1987 Dave Detlefs |
| 9 | ;; 1987 Stewart Clamen |
| 10 | ;; 1985 Richard M. Stallman |
| 11 | ;; Maintainer: bug-cc-mode@gnu.org |
| 12 | ;; Created: 22-Apr-1997 (split from cc-mode.el) |
| 13 | ;; Keywords: c languages |
| 14 | ;; Package: cc-mode |
| 15 | |
| 16 | ;; This file is part of GNU Emacs. |
| 17 | |
| 18 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
| 19 | ;; it under the terms of the GNU General Public License as published by |
| 20 | ;; the Free Software Foundation, either version 3 of the License, or |
| 21 | ;; (at your option) any later version. |
| 22 | |
| 23 | ;; GNU Emacs is distributed in the hope that it will be useful, |
| 24 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 25 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 26 | ;; GNU General Public License for more details. |
| 27 | |
| 28 | ;; You should have received a copy of the GNU General Public License |
| 29 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
| 30 | |
| 31 | ;;; Commentary: |
| 32 | |
| 33 | ;; HACKERS NOTE: There's heavy macro magic here. If you need to make |
| 34 | ;; changes in this or other files containing `c-lang-defconst' but |
| 35 | ;; don't want to read through the longer discussion below then read |
| 36 | ;; this: |
| 37 | ;; |
| 38 | ;; o A change in a `c-lang-defconst' or `c-lang-defvar' will not take |
| 39 | ;; effect if the file containing the mode init function (typically |
| 40 | ;; cc-mode.el) is byte compiled. |
| 41 | ;; o To make changes show in font locking you need to reevaluate the |
| 42 | ;; `*-font-lock-keywords-*' constants, which normally is easiest to |
| 43 | ;; do with M-x eval-buffer in cc-fonts.el. |
| 44 | ;; o In either case it's necessary to reinitialize the mode to make |
| 45 | ;; the changes show in an existing buffer. |
| 46 | |
| 47 | ;;; Introduction to the language dependent variable system: |
| 48 | ;; |
| 49 | ;; This file contains all the language dependent variables, except |
| 50 | ;; those specific for font locking which reside in cc-fonts.el. As |
| 51 | ;; far as possible, all the differences between the languages that CC |
| 52 | ;; Mode supports are described with these variables only, so that the |
| 53 | ;; code can be shared. |
| 54 | ;; |
| 55 | ;; The language constant system (see cc-defs.el) is used to specify |
| 56 | ;; various language dependent info at a high level, such as lists of |
| 57 | ;; keywords, and then from them generate - at compile time - the |
| 58 | ;; various regexps and other low-level structures actually employed in |
| 59 | ;; the code at runtime. |
| 60 | ;; |
| 61 | ;; This system is also designed to make it easy for developers of |
| 62 | ;; derived modes to customize the source constants for new language |
| 63 | ;; variants, without having to keep up with the exact regexps etc that |
| 64 | ;; are used in each CC Mode version. It's possible from an external |
| 65 | ;; package to add a new language by inheriting an existing one, and |
| 66 | ;; then change specific constants as necessary for the new language. |
| 67 | ;; The old values for those constants (and the values of all the other |
| 68 | ;; high-level constants) may be used to build the new ones, and those |
| 69 | ;; new values will in turn be used by the low-level definitions here |
| 70 | ;; to build the runtime constants appropriately for the new language |
| 71 | ;; in the current version of CC Mode. |
| 72 | ;; |
| 73 | ;; Like elsewhere in CC Mode, the existence of a doc string signifies |
| 74 | ;; that a language constant is part of the external API, and that it |
| 75 | ;; therefore can be used with a high confidence that it will continue |
| 76 | ;; to work with future versions of CC Mode. Even so, it's not |
| 77 | ;; unlikely that such constants will change meaning slightly as this |
| 78 | ;; system is refined further; a certain degree of dependence on the CC |
| 79 | ;; Mode version is unavoidable when hooking in at this level. Also |
| 80 | ;; note that there's still work to be done to actually use these |
| 81 | ;; constants everywhere inside CC Mode; there are still hardcoded |
| 82 | ;; values in many places in the code. |
| 83 | ;; |
| 84 | ;; Separate packages will also benefit from the compile time |
| 85 | ;; evaluation; the byte compiled file(s) for them will contain the |
| 86 | ;; compiled runtime constants ready for use by (the byte compiled) CC |
| 87 | ;; Mode, and the source definitions in this file don't have to be |
| 88 | ;; loaded then. However, if a byte compiled package is loaded that |
| 89 | ;; has been compiled with a different version of CC Mode than the one |
| 90 | ;; currently loaded, then the compiled-in values will be discarded and |
| 91 | ;; new ones will be built when the mode is initialized. That will |
| 92 | ;; automatically trig a load of the file(s) containing the source |
| 93 | ;; definitions (i.e. this file and/or cc-fonts.el) if necessary. |
| 94 | ;; |
| 95 | ;; A small example of a derived mode is available at |
| 96 | ;; <http://cc-mode.sourceforge.net/derived-mode-ex.el>. It also |
| 97 | ;; contains some useful hints for derived mode developers. |
| 98 | |
| 99 | ;;; Using language variables: |
| 100 | ;; |
| 101 | ;; The `c-lang-defvar' forms in this file comprise the language |
| 102 | ;; variables that CC Mode uses. It does not work to use |
| 103 | ;; `c-lang-defvar' anywhere else (which isn't much of a limitation |
| 104 | ;; since these variables sole purpose is to interface with the CC Mode |
| 105 | ;; core functions). The values in these `c-lang-defvar's are not |
| 106 | ;; evaluated right away but instead collected to a single large `setq' |
| 107 | ;; that can be inserted for a particular language with the |
| 108 | ;; `c-init-language-vars' macro. |
| 109 | |
| 110 | ;; This file is only required at compile time, or when not running |
| 111 | ;; from byte compiled files, or when the source definitions for the |
| 112 | ;; language constants are requested. |
| 113 | |
| 114 | ;;; Code: |
| 115 | |
| 116 | ;; For Emacs < 22.2. |
| 117 | (eval-and-compile |
| 118 | (unless (fboundp 'declare-function) (defmacro declare-function (&rest r)))) |
| 119 | |
| 120 | (eval-when-compile |
| 121 | (let ((load-path |
| 122 | (if (and (boundp 'byte-compile-dest-file) |
| 123 | (stringp byte-compile-dest-file)) |
| 124 | (cons (file-name-directory byte-compile-dest-file) load-path) |
| 125 | load-path))) |
| 126 | (load "cc-bytecomp" nil t))) |
| 127 | |
| 128 | (cc-require 'cc-defs) |
| 129 | (cc-require 'cc-vars) |
| 130 | |
| 131 | |
| 132 | ;; This file is not always loaded. See note above. |
| 133 | (cc-external-require 'cl) |
| 134 | |
| 135 | \f |
| 136 | ;;; Setup for the `c-lang-defvar' system. |
| 137 | |
| 138 | (eval-and-compile |
| 139 | ;; These are used to collect the init forms from the subsequent |
| 140 | ;; `c-lang-defvar' and `c-lang-setvar'. They are used to build the |
| 141 | ;; lambda in `c-make-init-lang-vars-fun' below, and to build `defvar's |
| 142 | ;; and `make-variable-buffer-local's in cc-engine and |
| 143 | ;; `make-local-variable's in `c-init-language-vars-for'. |
| 144 | (defvar c-lang-variable-inits nil) |
| 145 | (defvar c-lang-variable-inits-tail nil) |
| 146 | (setq c-lang-variable-inits (list nil) |
| 147 | c-lang-variable-inits-tail c-lang-variable-inits) |
| 148 | (defvar c-emacs-variable-inits nil) |
| 149 | (defvar c-emacs-variable-inits-tail nil) |
| 150 | (setq c-emacs-variable-inits (list nil) |
| 151 | c-emacs-variable-inits-tail c-emacs-variable-inits)) |
| 152 | |
| 153 | (defmacro c-lang-defvar (var val &optional doc) |
| 154 | "Declares the buffer local variable VAR to get the value VAL. VAL is |
| 155 | evaluated and assigned at mode initialization. More precisely, VAL is |
| 156 | evaluated and bound to VAR when the result from the macro |
| 157 | `c-init-language-vars' is evaluated. |
| 158 | |
| 159 | `c-lang-const' is typically used in VAL to get the right value for the |
| 160 | language being initialized, and such calls will be macro expanded to |
| 161 | the evaluated constant value at compile time." |
| 162 | |
| 163 | (when (and (not doc) |
| 164 | (eq (car-safe val) 'c-lang-const) |
| 165 | (eq (nth 1 val) var) |
| 166 | (not (nth 2 val))) |
| 167 | ;; Special case: If there's no docstring and the value is a |
| 168 | ;; simple (c-lang-const foo) where foo is the same name as VAR |
| 169 | ;; then take the docstring from the language constant foo. |
| 170 | (setq doc (get (intern (symbol-name (nth 1 val)) c-lang-constants) |
| 171 | 'variable-documentation))) |
| 172 | (or (stringp doc) |
| 173 | (setq doc nil)) |
| 174 | |
| 175 | (let ((elem (assq var (cdr c-lang-variable-inits)))) |
| 176 | (if elem |
| 177 | (setcdr elem (list val doc)) |
| 178 | (setcdr c-lang-variable-inits-tail (list (list var val doc))) |
| 179 | (setq c-lang-variable-inits-tail (cdr c-lang-variable-inits-tail)))) |
| 180 | |
| 181 | ;; Return the symbol, like the other def* forms. |
| 182 | `',var) |
| 183 | |
| 184 | (defmacro c-lang-setvar (var val) |
| 185 | "Causes the variable VAR to be made buffer local and to get set to the |
| 186 | value VAL. VAL is evaluated and assigned at mode initialization. More |
| 187 | precisely, VAL is evaluated and bound to VAR when the result from the |
| 188 | macro `c-init-language-vars' is evaluated. VAR is typically a standard |
| 189 | Emacs variable like `comment-start'. |
| 190 | |
| 191 | `c-lang-const' is typically used in VAL to get the right value for the |
| 192 | language being initialized, and such calls will be macro expanded to |
| 193 | the evaluated constant value at compile time." |
| 194 | (let ((elem (assq var (cdr c-emacs-variable-inits)))) |
| 195 | (if elem |
| 196 | (setcdr elem (list val)) ; Maybe remove "list", sometime. 2006-07-19 |
| 197 | (setcdr c-emacs-variable-inits-tail (list (list var val))) |
| 198 | (setq c-emacs-variable-inits-tail (cdr c-emacs-variable-inits-tail)))) |
| 199 | |
| 200 | ;; Return the symbol, like the other def* forms. |
| 201 | `',var) |
| 202 | |
| 203 | (put 'c-lang-defvar 'lisp-indent-function 'defun) |
| 204 | ; (eval-after-load "edebug" ; 2006-07-09: def-edebug-spec is now in subr.el. |
| 205 | ; ' |
| 206 | (def-edebug-spec c-lang-defvar |
| 207 | (&define name def-form &optional stringp)) ;) |
| 208 | |
| 209 | ;; Suppress "might not be defined at runtime" warning. |
| 210 | ;; This file is only used when compiling other cc files. |
| 211 | ;; These are defined in cl as aliases to the cl- versions. |
| 212 | (declare-function delete-duplicates "cl-seq" (cl-seq &rest cl-keys) t) |
| 213 | (declare-function mapcan "cl-extra" (cl-func cl-seq &rest cl-rest) t) |
| 214 | (declare-function cl-macroexpand-all "cl" (form &optional env)) |
| 215 | |
| 216 | (eval-and-compile |
| 217 | ;; Some helper functions used when building the language constants. |
| 218 | |
| 219 | (defun c-filter-ops (ops opgroup-filter op-filter &optional xlate) |
| 220 | ;; Extract a subset of the operators in the list OPS in a DWIM:ey |
| 221 | ;; way. The return value is a plain list of operators: |
| 222 | ;; |
| 223 | ;; OPS either has the structure of `c-operators', is a single |
| 224 | ;; group in `c-operators', or is a plain list of operators. |
| 225 | ;; |
| 226 | ;; OPGROUP-FILTER specifies how to select the operator groups. It |
| 227 | ;; can be t to choose all groups, a list of group type symbols |
| 228 | ;; (such as 'prefix) to accept, or a function which will be called |
| 229 | ;; with the group symbol for each group and should return non-nil |
| 230 | ;; if that group is to be included. |
| 231 | ;; |
| 232 | ;; If XLATE is given, it's a function which is called for each |
| 233 | ;; matching operator and its return value is collected instead. |
| 234 | ;; If it returns a list, the elements are spliced directly into |
| 235 | ;; the final result, which is returned as a list with duplicates |
| 236 | ;; removed using `equal'. |
| 237 | ;; |
| 238 | ;; `c-mode-syntax-table' for the current mode is in effect during |
| 239 | ;; the whole procedure. |
| 240 | (unless (listp (car-safe ops)) |
| 241 | (setq ops (list ops))) |
| 242 | (cond ((eq opgroup-filter t) |
| 243 | (setq opgroup-filter (lambda (opgroup) t))) |
| 244 | ((not (functionp opgroup-filter)) |
| 245 | (setq opgroup-filter `(lambda (opgroup) |
| 246 | (memq opgroup ',opgroup-filter))))) |
| 247 | (cond ((eq op-filter t) |
| 248 | (setq op-filter (lambda (op) t))) |
| 249 | ((stringp op-filter) |
| 250 | (setq op-filter `(lambda (op) |
| 251 | (string-match ,op-filter op))))) |
| 252 | (unless xlate |
| 253 | (setq xlate 'identity)) |
| 254 | (c-with-syntax-table (c-lang-const c-mode-syntax-table) |
| 255 | (delete-duplicates |
| 256 | (mapcan (lambda (opgroup) |
| 257 | (when (if (symbolp (car opgroup)) |
| 258 | (when (funcall opgroup-filter (car opgroup)) |
| 259 | (setq opgroup (cdr opgroup)) |
| 260 | t) |
| 261 | t) |
| 262 | (mapcan (lambda (op) |
| 263 | (when (funcall op-filter op) |
| 264 | (let ((res (funcall xlate op))) |
| 265 | (if (listp res) res (list res))))) |
| 266 | opgroup))) |
| 267 | ops) |
| 268 | :test 'equal)))) |
| 269 | |
| 270 | \f |
| 271 | ;;; Various mode specific values that aren't language related. |
| 272 | |
| 273 | (c-lang-defconst c-mode-menu |
| 274 | ;; The definition for the mode menu. The menu title is prepended to |
| 275 | ;; this before it's fed to `easy-menu-define'. |
| 276 | t `(["Comment Out Region" comment-region |
| 277 | (c-fn-region-is-active-p)] |
| 278 | ["Uncomment Region" (comment-region (region-beginning) |
| 279 | (region-end) '(4)) |
| 280 | (c-fn-region-is-active-p)] |
| 281 | ["Indent Expression" c-indent-exp |
| 282 | (memq (char-after) '(?\( ?\[ ?\{))] |
| 283 | ["Indent Line or Region" c-indent-line-or-region t] |
| 284 | ["Fill Comment Paragraph" c-fill-paragraph t] |
| 285 | "----" |
| 286 | ["Backward Statement" c-beginning-of-statement t] |
| 287 | ["Forward Statement" c-end-of-statement t] |
| 288 | ,@(when (c-lang-const c-opt-cpp-prefix) |
| 289 | ;; Only applicable if there's a cpp preprocessor. |
| 290 | `(["Up Conditional" c-up-conditional t] |
| 291 | ["Backward Conditional" c-backward-conditional t] |
| 292 | ["Forward Conditional" c-forward-conditional t] |
| 293 | "----" |
| 294 | ["Macro Expand Region" c-macro-expand |
| 295 | (c-fn-region-is-active-p)] |
| 296 | ["Backslashify" c-backslash-region |
| 297 | (c-fn-region-is-active-p)])) |
| 298 | "----" |
| 299 | ("Style..." |
| 300 | ["Set Style..." c-set-style t] |
| 301 | ["Show Current Style Name" (message |
| 302 | "Style Name: %s" |
| 303 | c-indentation-style) t] |
| 304 | ["Guess Style from this Buffer" c-guess-buffer-no-install t] |
| 305 | ["Install the Last Guessed Style..." c-guess-install |
| 306 | (and c-guess-guessed-offsets-alist |
| 307 | c-guess-guessed-basic-offset) ] |
| 308 | ["View the Last Guessed Style" c-guess-view |
| 309 | (and c-guess-guessed-offsets-alist |
| 310 | c-guess-guessed-basic-offset) ]) |
| 311 | "----" |
| 312 | ("Toggle..." |
| 313 | ["Syntactic indentation" c-toggle-syntactic-indentation |
| 314 | :style toggle :selected c-syntactic-indentation] |
| 315 | ["Electric mode" c-toggle-electric-state |
| 316 | :style toggle :selected c-electric-flag] |
| 317 | ["Auto newline" c-toggle-auto-newline |
| 318 | :style toggle :selected c-auto-newline] |
| 319 | ["Hungry delete" c-toggle-hungry-state |
| 320 | :style toggle :selected c-hungry-delete-key] |
| 321 | ["Subword mode" subword-mode |
| 322 | :style toggle :selected (and (boundp 'subword-mode) |
| 323 | subword-mode)]))) |
| 324 | |
| 325 | \f |
| 326 | ;;; Syntax tables. |
| 327 | |
| 328 | (defun c-populate-syntax-table (table) |
| 329 | "Populate the given syntax table as necessary for a C-like language. |
| 330 | This includes setting ' and \" as string delimiters, and setting up |
| 331 | the comment syntax to handle both line style \"//\" and block style |
| 332 | \"/*\" \"*/\" comments." |
| 333 | |
| 334 | (modify-syntax-entry ?_ "_" table) |
| 335 | (modify-syntax-entry ?\\ "\\" table) |
| 336 | (modify-syntax-entry ?+ "." table) |
| 337 | (modify-syntax-entry ?- "." table) |
| 338 | (modify-syntax-entry ?= "." table) |
| 339 | (modify-syntax-entry ?% "." table) |
| 340 | (modify-syntax-entry ?< "." table) |
| 341 | (modify-syntax-entry ?> "." table) |
| 342 | (modify-syntax-entry ?& "." table) |
| 343 | (modify-syntax-entry ?| "." table) |
| 344 | (modify-syntax-entry ?\' "\"" table) |
| 345 | (modify-syntax-entry ?\240 "." table) |
| 346 | |
| 347 | ;; Set up block and line oriented comments. The new C |
| 348 | ;; standard mandates both comment styles even in C, so since |
| 349 | ;; all languages now require dual comments, we make this the |
| 350 | ;; default. |
| 351 | (cond |
| 352 | ;; XEmacs |
| 353 | ((memq '8-bit c-emacs-features) |
| 354 | (modify-syntax-entry ?/ ". 1456" table) |
| 355 | (modify-syntax-entry ?* ". 23" table)) |
| 356 | ;; Emacs |
| 357 | ((memq '1-bit c-emacs-features) |
| 358 | (modify-syntax-entry ?/ ". 124b" table) |
| 359 | (modify-syntax-entry ?* ". 23" table)) |
| 360 | ;; incompatible |
| 361 | (t (error "CC Mode is incompatible with this version of Emacs"))) |
| 362 | |
| 363 | (modify-syntax-entry ?\n "> b" table) |
| 364 | ;; Give CR the same syntax as newline, for selective-display |
| 365 | (modify-syntax-entry ?\^m "> b" table)) |
| 366 | |
| 367 | (c-lang-defconst c-make-mode-syntax-table |
| 368 | "Functions that generates the mode specific syntax tables. |
| 369 | The syntax tables aren't stored directly since they're quite large." |
| 370 | t `(lambda () |
| 371 | (let ((table (make-syntax-table))) |
| 372 | (c-populate-syntax-table table) |
| 373 | ;; Mode specific syntaxes. |
| 374 | ,(cond ((or (c-major-mode-is 'objc-mode) (c-major-mode-is 'java-mode)) |
| 375 | ;; Let '@' be part of symbols in ObjC to cope with |
| 376 | ;; its compiler directives as single keyword tokens. |
| 377 | ;; This is then necessary since it's assumed that |
| 378 | ;; every keyword is a single symbol. |
| 379 | `(modify-syntax-entry ?@ "_" table)) |
| 380 | ((c-major-mode-is 'pike-mode) |
| 381 | `(modify-syntax-entry ?@ "." table))) |
| 382 | table))) |
| 383 | |
| 384 | (c-lang-defconst c-mode-syntax-table |
| 385 | ;; The syntax tables in evaluated form. Only used temporarily when |
| 386 | ;; the constants in this file are evaluated. |
| 387 | t (funcall (c-lang-const c-make-mode-syntax-table))) |
| 388 | |
| 389 | (c-lang-defconst c++-make-template-syntax-table |
| 390 | ;; A variant of `c++-mode-syntax-table' that defines `<' and `>' as |
| 391 | ;; parenthesis characters. Used temporarily when template argument |
| 392 | ;; lists are parsed. Note that this encourages incorrect parsing of |
| 393 | ;; templates since they might contain normal operators that uses the |
| 394 | ;; '<' and '>' characters. Therefore this syntax table might go |
| 395 | ;; away when CC Mode handles templates correctly everywhere. |
| 396 | t nil |
| 397 | (java c++) `(lambda () |
| 398 | (let ((table (funcall ,(c-lang-const c-make-mode-syntax-table)))) |
| 399 | (modify-syntax-entry ?< "(>" table) |
| 400 | (modify-syntax-entry ?> ")<" table) |
| 401 | table))) |
| 402 | (c-lang-defvar c++-template-syntax-table |
| 403 | (and (c-lang-const c++-make-template-syntax-table) |
| 404 | (funcall (c-lang-const c++-make-template-syntax-table)))) |
| 405 | |
| 406 | (c-lang-defconst c-no-parens-syntax-table |
| 407 | ;; A variant of the standard syntax table which is used to find matching |
| 408 | ;; "<"s and ">"s which have been marked as parens using syntax table |
| 409 | ;; properties. The other paren characters (e.g. "{", ")" "]") are given a |
| 410 | ;; non-paren syntax here. so that the list commands will work on "< ... >" |
| 411 | ;; even when there's unbalanced other parens inside them. |
| 412 | ;; |
| 413 | ;; This variable is nil for languages which don't have template stuff. |
| 414 | t `(lambda () |
| 415 | (if (c-lang-const c-recognize-<>-arglists) |
| 416 | (let ((table (funcall ,(c-lang-const c-make-mode-syntax-table)))) |
| 417 | (modify-syntax-entry ?\( "." table) |
| 418 | (modify-syntax-entry ?\) "." table) |
| 419 | (modify-syntax-entry ?\[ "." table) |
| 420 | (modify-syntax-entry ?\] "." table) |
| 421 | (modify-syntax-entry ?\{ "." table) |
| 422 | (modify-syntax-entry ?\} "." table) |
| 423 | table)))) |
| 424 | (c-lang-defvar c-no-parens-syntax-table |
| 425 | (funcall (c-lang-const c-no-parens-syntax-table))) |
| 426 | |
| 427 | (c-lang-defconst c-identifier-syntax-modifications |
| 428 | "A list that describes the modifications that should be done to the |
| 429 | mode syntax table to get a syntax table that matches all identifiers |
| 430 | and keywords as words. |
| 431 | |
| 432 | The list is just like the one used in `font-lock-defaults': Each |
| 433 | element is a cons where the car is the character to modify and the cdr |
| 434 | the new syntax, as accepted by `modify-syntax-entry'." |
| 435 | ;; The $ character is not allowed in most languages (one exception |
| 436 | ;; is Java which allows it for legacy reasons) but we still classify |
| 437 | ;; it as an identifier character since it's often used in various |
| 438 | ;; machine generated identifiers. |
| 439 | t '((?_ . "w") (?$ . "w")) |
| 440 | (objc java) (append '((?@ . "w")) |
| 441 | (c-lang-const c-identifier-syntax-modifications)) |
| 442 | awk '((?_ . "w"))) |
| 443 | (c-lang-defvar c-identifier-syntax-modifications |
| 444 | (c-lang-const c-identifier-syntax-modifications)) |
| 445 | |
| 446 | (c-lang-defvar c-identifier-syntax-table |
| 447 | (let ((table (copy-syntax-table (c-mode-var "mode-syntax-table"))) |
| 448 | (mods c-identifier-syntax-modifications) |
| 449 | mod) |
| 450 | (while mods |
| 451 | (setq mod (car mods) |
| 452 | mods (cdr mods)) |
| 453 | (modify-syntax-entry (car mod) (cdr mod) table)) |
| 454 | table) |
| 455 | "Syntax table built on the mode syntax table but additionally |
| 456 | classifies symbol constituents like '_' and '$' as word constituents, |
| 457 | so that all identifiers are recognized as words.") |
| 458 | |
| 459 | (c-lang-defconst c-get-state-before-change-functions |
| 460 | ;; For documentation see the following c-lang-defvar of the same name. |
| 461 | ;; The value here may be a list of functions or a single function. |
| 462 | t nil |
| 463 | c++ '(c-extend-region-for-CPP |
| 464 | c-before-change-check-<>-operators |
| 465 | c-invalidate-macro-cache) |
| 466 | (c objc) '(c-extend-region-for-CPP c-invalidate-macro-cache) |
| 467 | ;; java 'c-before-change-check-<>-operators |
| 468 | awk 'c-awk-record-region-clear-NL) |
| 469 | (c-lang-defvar c-get-state-before-change-functions |
| 470 | (let ((fs (c-lang-const c-get-state-before-change-functions))) |
| 471 | (if (listp fs) |
| 472 | fs |
| 473 | (list fs))) |
| 474 | "If non-nil, a list of functions called from c-before-change-hook. |
| 475 | Typically these will record enough state to allow |
| 476 | `c-before-font-lock-function' to extend the region to fontify, |
| 477 | and may do such things as removing text-properties which must be |
| 478 | recalculated. |
| 479 | |
| 480 | These functions will be run in the order given. Each of them |
| 481 | takes 2 parameters, the BEG and END supplied to every |
| 482 | before-change function; on entry, the buffer will have been |
| 483 | widened and match-data will have been saved; point is undefined |
| 484 | on both entry and exit; the return value is ignored. |
| 485 | |
| 486 | The functions are called even when font locking isn't enabled. |
| 487 | |
| 488 | When the mode is initialized, the functions are called with |
| 489 | parameters \(point-min) and \(point-max).") |
| 490 | |
| 491 | (c-lang-defconst c-before-font-lock-functions |
| 492 | ;; For documentation see the following c-lang-defvar of the same name. |
| 493 | ;; The value here may be a list of functions or a single function. |
| 494 | t 'c-change-set-fl-decl-start |
| 495 | (c c++ objc) '(c-neutralize-syntax-in-and-mark-CPP |
| 496 | c-change-set-fl-decl-start) |
| 497 | awk 'c-awk-extend-and-syntax-tablify-region) |
| 498 | (c-lang-defvar c-before-font-lock-functions |
| 499 | (let ((fs (c-lang-const c-before-font-lock-functions))) |
| 500 | (if (listp fs) |
| 501 | fs |
| 502 | (list fs))) |
| 503 | "If non-nil, a list of functions called just before font locking. |
| 504 | Typically they will extend the region about to be fontified \(see |
| 505 | below) and will set `syntax-table' text properties on the region. |
| 506 | |
| 507 | These functions will be run in the order given. Each of them |
| 508 | takes 3 parameters, the BEG, END, and OLD-LEN supplied to every |
| 509 | after-change function; point is undefined on both entry and exit; |
| 510 | on entry, the buffer will have been widened and match-data will |
| 511 | have been saved; the return value is ignored. |
| 512 | |
| 513 | The functions may extend the region to be fontified by setting the |
| 514 | buffer local variables c-new-BEG and c-new-END. |
| 515 | |
| 516 | The functions are called even when font locking is disabled. |
| 517 | |
| 518 | When the mode is initialized, these functions are called with |
| 519 | parameters \(point-min), \(point-max) and <buffer size>.") |
| 520 | |
| 521 | (c-lang-defconst c-before-context-fontification-functions |
| 522 | awk nil |
| 523 | t 'c-context-set-fl-decl-start) |
| 524 | ;; For documentation see the following c-lang-defvar of the same name. |
| 525 | ;; The value here may be a list of functions or a single function. |
| 526 | (c-lang-defvar c-before-context-fontification-functions |
| 527 | (let ((fs (c-lang-const c-before-context-fontification-functions))) |
| 528 | (if (listp fs) |
| 529 | fs |
| 530 | (list fs))) |
| 531 | "If non-nil, a list of functions called just before context (or |
| 532 | other non-change) fontification is done. Typically they will |
| 533 | extend the region. |
| 534 | |
| 535 | These functions will be run in the order given. Each of them |
| 536 | takes 2 parameters, the BEG and END of the region to be |
| 537 | fontified. Point is undefined on both entry and exit. On entry, |
| 538 | the buffer will have been widened and match-data will have been |
| 539 | saved; the return value is a cons of the adjusted |
| 540 | region, (NEW-BEG . NEW-END).") |
| 541 | |
| 542 | \f |
| 543 | ;;; Syntactic analysis ("virtual semicolons") for line-oriented languages (AWK). |
| 544 | (c-lang-defconst c-at-vsemi-p-fn |
| 545 | "Contains a function \"Is there a virtual semicolon at POS or point?\". |
| 546 | Such a function takes one optional parameter, a buffer position (defaults to |
| 547 | point), and returns nil or t. This variable contains nil for languages which |
| 548 | don't have EOL terminated statements. " |
| 549 | t nil |
| 550 | (c c++ objc) 'c-at-macro-vsemi-p |
| 551 | awk 'c-awk-at-vsemi-p) |
| 552 | (c-lang-defvar c-at-vsemi-p-fn (c-lang-const c-at-vsemi-p-fn)) |
| 553 | |
| 554 | (c-lang-defconst c-vsemi-status-unknown-p-fn |
| 555 | "Contains a function \"are we unsure whether there is a virtual semicolon on this line?\". |
| 556 | The (admittedly kludgy) purpose of such a function is to prevent an infinite |
| 557 | recursion in c-beginning-of-statement-1 when point starts at a `while' token. |
| 558 | The function MUST NOT UNDER ANY CIRCUMSTANCES call c-beginning-of-statement-1, |
| 559 | even indirectly. This variable contains nil for languages which don't have |
| 560 | EOL terminated statements." |
| 561 | t nil |
| 562 | (c c++ objc) 'c-macro-vsemi-status-unknown-p |
| 563 | awk 'c-awk-vsemi-status-unknown-p) |
| 564 | (c-lang-defvar c-vsemi-status-unknown-p-fn |
| 565 | (c-lang-const c-vsemi-status-unknown-p-fn)) |
| 566 | |
| 567 | \f |
| 568 | ;;; Lexer-level syntax (identifiers, tokens etc). |
| 569 | |
| 570 | (c-lang-defconst c-has-bitfields |
| 571 | "Whether the language has bitfield declarations." |
| 572 | t nil |
| 573 | (c c++ objc) t) |
| 574 | (c-lang-defvar c-has-bitfields (c-lang-const c-has-bitfields)) |
| 575 | |
| 576 | (c-lang-defconst c-symbol-start |
| 577 | "Regexp that matches the start of a symbol, i.e. any identifier or |
| 578 | keyword. It's unspecified how far it matches. Does not contain a \\| |
| 579 | operator at the top level." |
| 580 | t (concat "[" c-alpha "_]") |
| 581 | java (concat "[" c-alpha "_@]") |
| 582 | objc (concat "[" c-alpha "_@]") |
| 583 | pike (concat "[" c-alpha "_`]")) |
| 584 | (c-lang-defvar c-symbol-start (c-lang-const c-symbol-start)) |
| 585 | |
| 586 | (c-lang-defconst c-symbol-chars |
| 587 | "Set of characters that can be part of a symbol. |
| 588 | This is of the form that fits inside [ ] in a regexp." |
| 589 | ;; Pike note: With the backquote identifiers this would include most |
| 590 | ;; operator chars too, but they are handled with other means instead. |
| 591 | t (concat c-alnum "_$") |
| 592 | objc (concat c-alnum "_$@")) |
| 593 | (c-lang-defvar c-symbol-chars (c-lang-const c-symbol-chars)) |
| 594 | |
| 595 | (c-lang-defconst c-symbol-key |
| 596 | "Regexp matching identifiers and keywords (with submatch 0). Assumed |
| 597 | to match if `c-symbol-start' matches on the same position." |
| 598 | t (concat (c-lang-const c-symbol-start) |
| 599 | "[" (c-lang-const c-symbol-chars) "]*") |
| 600 | pike (concat |
| 601 | ;; Use the value from C here since the operator backquote is |
| 602 | ;; covered by the other alternative. |
| 603 | (c-lang-const c-symbol-key c) |
| 604 | "\\|" |
| 605 | (c-make-keywords-re nil |
| 606 | (c-lang-const c-overloadable-operators)))) |
| 607 | (c-lang-defvar c-symbol-key (c-lang-const c-symbol-key)) |
| 608 | |
| 609 | (c-lang-defconst c-symbol-key-depth |
| 610 | ;; Number of regexp grouping parens in `c-symbol-key'. |
| 611 | t (regexp-opt-depth (c-lang-const c-symbol-key))) |
| 612 | |
| 613 | (c-lang-defconst c-nonsymbol-chars |
| 614 | "This is the set of chars that can't be part of a symbol, i.e. the |
| 615 | negation of `c-symbol-chars'." |
| 616 | t (concat "^" (c-lang-const c-symbol-chars))) |
| 617 | (c-lang-defvar c-nonsymbol-chars (c-lang-const c-nonsymbol-chars)) |
| 618 | |
| 619 | (c-lang-defconst c-nonsymbol-key |
| 620 | "Regexp that matches any character that can't be part of a symbol. |
| 621 | It's usually appended to other regexps to avoid matching a prefix. |
| 622 | It's assumed to not contain any submatchers." |
| 623 | ;; The same thing regarding Unicode identifiers applies here as to |
| 624 | ;; `c-symbol-key'. |
| 625 | t (concat "[" (c-lang-const c-nonsymbol-chars) "]")) |
| 626 | |
| 627 | (c-lang-defconst c-identifier-ops |
| 628 | "The operators that make up fully qualified identifiers. nil in |
| 629 | languages that don't have such things. See `c-operators' for a |
| 630 | description of the format. Binary operators can concatenate symbols, |
| 631 | e.g. \"::\" in \"A::B::C\". Prefix operators can precede identifiers, |
| 632 | e.g. \"~\" in \"~A::B\". Other types of operators aren't supported. |
| 633 | |
| 634 | This value is by default merged into `c-operators'." |
| 635 | t nil |
| 636 | c++ '((prefix "~" "??-" "compl") |
| 637 | (right-assoc "::") |
| 638 | (prefix "::")) |
| 639 | ;; Java has "." to concatenate identifiers but it's also used for |
| 640 | ;; normal indexing. There's special code in the Java font lock |
| 641 | ;; rules to fontify qualified identifiers based on the standard |
| 642 | ;; naming conventions. We still define "." here to make |
| 643 | ;; `c-forward-name' move over as long names as possible which is |
| 644 | ;; necessary to e.g. handle throws clauses correctly. |
| 645 | java '((left-assoc ".")) |
| 646 | idl '((left-assoc "::") |
| 647 | (prefix "::")) |
| 648 | pike '((left-assoc "::") |
| 649 | (prefix "::") |
| 650 | (left-assoc "."))) |
| 651 | |
| 652 | (c-lang-defconst c-opt-identifier-concat-key |
| 653 | ;; Appendable adorned regexp matching the operators that join |
| 654 | ;; symbols to fully qualified identifiers, or nil in languages that |
| 655 | ;; don't have such things. |
| 656 | ;; |
| 657 | ;; This was a docstring constant in 5.30. It still works but is now |
| 658 | ;; considered internal - change `c-identifier-ops' instead. |
| 659 | t (let ((ops (c-filter-ops (c-lang-const c-identifier-ops) |
| 660 | '(left-assoc right-assoc) |
| 661 | t))) |
| 662 | (when ops |
| 663 | (c-make-keywords-re 'appendable ops)))) |
| 664 | (c-lang-defvar c-opt-identifier-concat-key |
| 665 | (c-lang-const c-opt-identifier-concat-key) |
| 666 | 'dont-doc) |
| 667 | |
| 668 | (c-lang-defconst c-opt-identifier-concat-key-depth |
| 669 | ;; Number of regexp grouping parens in `c-opt-identifier-concat-key'. |
| 670 | t (regexp-opt-depth (c-lang-const c-opt-identifier-concat-key))) |
| 671 | |
| 672 | (c-lang-defconst c-opt-identifier-prefix-key |
| 673 | ;; Appendable adorned regexp matching operators that might precede |
| 674 | ;; an identifier and that are part of the identifier in that case. |
| 675 | ;; nil in languages without such things. |
| 676 | t (let ((ops (c-filter-ops (c-lang-const c-identifier-ops) |
| 677 | '(prefix) |
| 678 | t))) |
| 679 | (when ops |
| 680 | (c-make-keywords-re 'appendable ops)))) |
| 681 | |
| 682 | (c-lang-defconst c-after-id-concat-ops |
| 683 | "Operators that can occur after a binary operator on `c-identifier-ops' |
| 684 | in identifiers. nil in languages that don't have such things. |
| 685 | |
| 686 | Operators here should also have appropriate entries in `c-operators' - |
| 687 | it's not taken care of by default." |
| 688 | t nil |
| 689 | ;; '~' for destructors in C++, '*' for member pointers. |
| 690 | c++ '("~" "*") |
| 691 | ;; In Java we recognize '*' to deal with "foo.bar.*" that can occur |
| 692 | ;; in import declarations. (This will also match bogus things like |
| 693 | ;; "foo.*bar" but we don't bother.) |
| 694 | java '("*")) |
| 695 | |
| 696 | (c-lang-defconst c-opt-after-id-concat-key |
| 697 | ;; Regexp that must match the token after |
| 698 | ;; `c-opt-identifier-concat-key' for it to be considered an |
| 699 | ;; identifier concatenation operator (which e.g. causes the |
| 700 | ;; preceding identifier to be fontified as a reference). Assumed to |
| 701 | ;; be a string if `c-opt-identifier-concat-key' is. |
| 702 | ;; |
| 703 | ;; This was a docstring constant in 5.30. It still works but is now |
| 704 | ;; considered internal - change `c-after-id-concat-ops' instead. |
| 705 | t (concat (c-lang-const c-symbol-start) |
| 706 | (if (c-lang-const c-after-id-concat-ops) |
| 707 | (concat "\\|" (c-make-keywords-re 'appendable |
| 708 | (c-lang-const c-after-id-concat-ops))) |
| 709 | ""))) |
| 710 | |
| 711 | (c-lang-defconst c-identifier-start |
| 712 | "Regexp that matches the start of an (optionally qualified) identifier. |
| 713 | It should also match all keywords. It's unspecified how far it |
| 714 | matches." |
| 715 | t (concat (c-lang-const c-symbol-start) |
| 716 | (if (c-lang-const c-opt-identifier-prefix-key) |
| 717 | (concat "\\|" |
| 718 | (c-lang-const c-opt-identifier-prefix-key)) |
| 719 | ""))) |
| 720 | (c-lang-defvar c-identifier-start (c-lang-const c-identifier-start)) |
| 721 | |
| 722 | (c-lang-defconst c-identifier-key |
| 723 | "Regexp matching a fully qualified identifier, like \"A::B::c\" in |
| 724 | C++. It does not recognize the full range of syntactic whitespace |
| 725 | between the tokens; `c-forward-name' has to be used for that. It |
| 726 | should also not match identifiers containing parenthesis groupings, |
| 727 | e.g. identifiers with template arguments such as \"A<X,Y>\" in C++." |
| 728 | ;; This regexp is more complex than strictly necessary to ensure |
| 729 | ;; that it can be matched with a minimum of backtracking. |
| 730 | t (concat (if (c-lang-const c-opt-identifier-prefix-key) |
| 731 | (concat |
| 732 | "\\(" |
| 733 | (c-lang-const c-opt-identifier-prefix-key) |
| 734 | (c-lang-const c-simple-ws) "*" |
| 735 | "\\)?") |
| 736 | "") |
| 737 | "\\(" (c-lang-const c-symbol-key) "\\)" |
| 738 | (if (c-lang-const c-opt-identifier-concat-key) |
| 739 | (concat |
| 740 | "\\(" |
| 741 | (c-lang-const c-simple-ws) "*" |
| 742 | (c-lang-const c-opt-identifier-concat-key) |
| 743 | (c-lang-const c-simple-ws) "*" |
| 744 | (if (c-lang-const c-after-id-concat-ops) |
| 745 | (concat |
| 746 | "\\(" |
| 747 | (c-make-keywords-re 'appendable |
| 748 | (c-lang-const c-after-id-concat-ops)) |
| 749 | (concat |
| 750 | ;; For flexibility, consider the symbol match |
| 751 | ;; optional if we've hit a |
| 752 | ;; `c-after-id-concat-ops' operator. This is |
| 753 | ;; also necessary to handle the "*" that can |
| 754 | ;; end import declaration identifiers in Java. |
| 755 | "\\(" |
| 756 | (c-lang-const c-simple-ws) "*" |
| 757 | "\\(" (c-lang-const c-symbol-key) "\\)" |
| 758 | "\\)?") |
| 759 | "\\|" |
| 760 | "\\(" (c-lang-const c-symbol-key) "\\)" |
| 761 | "\\)") |
| 762 | (concat "\\(" (c-lang-const c-symbol-key) "\\)")) |
| 763 | "\\)*") |
| 764 | ""))) |
| 765 | (c-lang-defvar c-identifier-key (c-lang-const c-identifier-key)) |
| 766 | |
| 767 | (c-lang-defconst c-identifier-last-sym-match |
| 768 | ;; This was a docstring constant in 5.30 but it's no longer used. |
| 769 | ;; It's only kept to avoid breaking third party code. |
| 770 | ;; |
| 771 | ;; Used to identify the submatch in `c-identifier-key' that |
| 772 | ;; surrounds the last symbol in the qualified identifier. It's a |
| 773 | ;; list of submatch numbers, of which the first that has a match is |
| 774 | ;; taken. It's assumed that at least one does when the regexp has |
| 775 | ;; matched. |
| 776 | t nil) |
| 777 | |
| 778 | (c-lang-defconst c-string-escaped-newlines |
| 779 | "Set if the language support backslash escaped newlines inside string |
| 780 | literals." |
| 781 | t nil |
| 782 | (c c++ objc pike) t) |
| 783 | (c-lang-defvar c-string-escaped-newlines |
| 784 | (c-lang-const c-string-escaped-newlines)) |
| 785 | |
| 786 | (c-lang-defconst c-multiline-string-start-char |
| 787 | "Set if the language supports multiline string literals without escaped |
| 788 | newlines. If t, all string literals are multiline. If a character, |
| 789 | only literals where the open quote is immediately preceded by that |
| 790 | literal are multiline." |
| 791 | t nil |
| 792 | pike ?#) |
| 793 | (c-lang-defvar c-multiline-string-start-char |
| 794 | (c-lang-const c-multiline-string-start-char)) |
| 795 | |
| 796 | (c-lang-defconst c-opt-cpp-symbol |
| 797 | "The symbol which starts preprocessor constructs when in the margin." |
| 798 | t "#" |
| 799 | (java awk) nil) |
| 800 | (c-lang-defvar c-opt-cpp-symbol (c-lang-const c-opt-cpp-symbol)) |
| 801 | |
| 802 | (c-lang-defconst c-opt-cpp-prefix |
| 803 | "Regexp matching the prefix of a cpp directive in the languages that |
| 804 | normally use that macro preprocessor. Tested at bol or at boi. |
| 805 | Assumed to not contain any submatches or \\| operators." |
| 806 | ;; TODO (ACM, 2005-04-01). Amend the following to recognize escaped NLs; |
| 807 | ;; amend all uses of c-opt-cpp-prefix which count regexp-depth. |
| 808 | t "\\s *#\\s *" |
| 809 | (java awk) nil) |
| 810 | (c-lang-defvar c-opt-cpp-prefix (c-lang-const c-opt-cpp-prefix)) |
| 811 | |
| 812 | (c-lang-defconst c-anchored-cpp-prefix |
| 813 | "Regexp matching the prefix of a cpp directive anchored to BOL, |
| 814 | in the languages that have a macro preprocessor." |
| 815 | t "^\\s *\\(#\\)\\s *" |
| 816 | (java awk) nil) |
| 817 | (c-lang-defvar c-anchored-cpp-prefix (c-lang-const c-anchored-cpp-prefix)) |
| 818 | |
| 819 | (c-lang-defconst c-opt-cpp-start |
| 820 | "Regexp matching the prefix of a cpp directive including the directive |
| 821 | name, or nil in languages without preprocessor support. The first |
| 822 | submatch surrounds the directive name." |
| 823 | t (if (c-lang-const c-opt-cpp-prefix) |
| 824 | (concat (c-lang-const c-opt-cpp-prefix) |
| 825 | "\\([" c-alnum "]+\\)")) |
| 826 | ;; Pike, being a scripting language, recognizes hash-bangs too. |
| 827 | pike (concat (c-lang-const c-opt-cpp-prefix) |
| 828 | "\\([" c-alnum "]+\\|!\\)")) |
| 829 | (c-lang-defvar c-opt-cpp-start (c-lang-const c-opt-cpp-start)) |
| 830 | |
| 831 | (c-lang-defconst c-cpp-message-directives |
| 832 | "List of cpp directives (without the prefix) that are followed by a |
| 833 | string message." |
| 834 | t (if (c-lang-const c-opt-cpp-prefix) |
| 835 | '("error")) |
| 836 | (c c++ objc pike) '("error" "warning")) |
| 837 | |
| 838 | (c-lang-defconst c-cpp-include-directives |
| 839 | "List of cpp directives (without the prefix) that are followed by a |
| 840 | file name in angle brackets or quotes." |
| 841 | t (if (c-lang-const c-opt-cpp-prefix) |
| 842 | '("include")) |
| 843 | objc '("include" "import")) |
| 844 | |
| 845 | (c-lang-defconst c-opt-cpp-macro-define |
| 846 | "Cpp directive (without the prefix) that is followed by a macro |
| 847 | definition, or nil if the language doesn't have any." |
| 848 | t (if (c-lang-const c-opt-cpp-prefix) |
| 849 | "define")) |
| 850 | (c-lang-defvar c-opt-cpp-macro-define |
| 851 | (c-lang-const c-opt-cpp-macro-define)) |
| 852 | |
| 853 | (c-lang-defconst c-opt-cpp-macro-define-start |
| 854 | ;; Regexp matching everything up to the macro body of a cpp define, or the |
| 855 | ;; end of the logical line if there is none. Submatch 1 is the name of the |
| 856 | ;; macro. Set if c-opt-cpp-macro-define is. |
| 857 | t (if (c-lang-const c-opt-cpp-macro-define) |
| 858 | (concat (c-lang-const c-opt-cpp-prefix) |
| 859 | (c-lang-const c-opt-cpp-macro-define) |
| 860 | "[ \t]+\\(\\(\\sw\\|_\\)+\\)\\(\([^\)]*\)\\)?" |
| 861 | ;; ^ ^ #defined name |
| 862 | "\\([ \t]\\|\\\\\n\\)*"))) |
| 863 | (c-lang-defvar c-opt-cpp-macro-define-start |
| 864 | (c-lang-const c-opt-cpp-macro-define-start)) |
| 865 | |
| 866 | (c-lang-defconst c-opt-cpp-macro-define-id |
| 867 | ;; Regexp matching everything up to the end of the identifier defined |
| 868 | ;; by a cpp define. |
| 869 | t (if (c-lang-const c-opt-cpp-macro-define) |
| 870 | (concat (c-lang-const c-opt-cpp-prefix) ; # |
| 871 | (c-lang-const c-opt-cpp-macro-define) ; define |
| 872 | "[ \t]+\\(\\sw\\|_\\)+"))) |
| 873 | (c-lang-defvar c-opt-cpp-macro-define-id |
| 874 | (c-lang-const c-opt-cpp-macro-define-id)) |
| 875 | |
| 876 | (c-lang-defconst c-cpp-expr-directives |
| 877 | "List of cpp directives (without the prefix) that are followed by an |
| 878 | expression." |
| 879 | t (if (c-lang-const c-opt-cpp-prefix) |
| 880 | '("if" "elif"))) |
| 881 | |
| 882 | (c-lang-defconst c-cpp-expr-intro-re |
| 883 | "Regexp which matches the start of a CPP directive which contains an |
| 884 | expression, or nil if there aren't any in the language." |
| 885 | t (if (c-lang-const c-cpp-expr-directives) |
| 886 | (concat |
| 887 | (c-lang-const c-opt-cpp-prefix) |
| 888 | (c-make-keywords-re t (c-lang-const c-cpp-expr-directives))))) |
| 889 | (c-lang-defvar c-cpp-expr-intro-re |
| 890 | (c-lang-const c-cpp-expr-intro-re)) |
| 891 | |
| 892 | (c-lang-defconst c-cpp-expr-functions |
| 893 | "List of functions in cpp expressions." |
| 894 | t (if (c-lang-const c-opt-cpp-prefix) |
| 895 | '("defined")) |
| 896 | pike '("defined" "efun" "constant")) |
| 897 | |
| 898 | (c-lang-defconst c-assignment-operators |
| 899 | "List of all assignment operators." |
| 900 | t '("=" "*=" "/=" "%=" "+=" "-=" ">>=" "<<=" "&=" "^=" "|=") |
| 901 | java (append (c-lang-const c-assignment-operators) |
| 902 | '(">>>=")) |
| 903 | c++ (append (c-lang-const c-assignment-operators) |
| 904 | '("and_eq" "or_eq" "xor_eq" "??!=" "??'=")) |
| 905 | idl nil) |
| 906 | |
| 907 | (c-lang-defconst c-operators |
| 908 | "List describing all operators, along with their precedence and |
| 909 | associativity. The order in the list corresponds to the precedence of |
| 910 | the operators: The operators in each element are a group with the same |
| 911 | precedence, and the group has higher precedence than the groups in all |
| 912 | following elements. The car of each element describes the type of the |
| 913 | operator group, and the cdr is a list of the operator tokens in it. |
| 914 | The operator group types are: |
| 915 | |
| 916 | 'prefix Unary prefix operators. |
| 917 | 'postfix Unary postfix operators. |
| 918 | 'postfix-if-paren |
| 919 | Unary postfix operators if and only if the chars have |
| 920 | parenthesis syntax. |
| 921 | 'left-assoc Binary left associative operators (i.e. a+b+c means (a+b)+c). |
| 922 | 'right-assoc Binary right associative operators (i.e. a=b=c means a=(b=c)). |
| 923 | 'right-assoc-sequence |
| 924 | Right associative operator that constitutes of a |
| 925 | sequence of tokens that separate expressions. All the |
| 926 | tokens in the group are in this case taken as |
| 927 | describing the sequence in one such operator, and the |
| 928 | order between them is therefore significant. |
| 929 | |
| 930 | Operators containing a character with paren syntax are taken to match |
| 931 | with a corresponding open/close paren somewhere else. A postfix |
| 932 | operator with close paren syntax is taken to end a postfix expression |
| 933 | started somewhere earlier, rather than start a new one at point. Vice |
| 934 | versa for prefix operators with open paren syntax. |
| 935 | |
| 936 | Note that operators like \".\" and \"->\" which in language references |
| 937 | often are described as postfix operators are considered binary here, |
| 938 | since CC Mode treats every identifier as an expression." |
| 939 | |
| 940 | ;; There's currently no code in CC Mode that exploit all the info |
| 941 | ;; in this variable; precedence, associativity etc are present as a |
| 942 | ;; preparation for future work. |
| 943 | |
| 944 | t `(;; Preprocessor. |
| 945 | ,@(when (c-lang-const c-opt-cpp-prefix) |
| 946 | `((prefix "#" |
| 947 | ,@(when (c-major-mode-is '(c-mode c++-mode)) |
| 948 | '("%:" "??="))) |
| 949 | (left-assoc "##" |
| 950 | ,@(when (c-major-mode-is '(c-mode c++-mode)) |
| 951 | '("%:%:" "??=??="))))) |
| 952 | |
| 953 | ;; Primary. |
| 954 | ,@(c-lang-const c-identifier-ops) |
| 955 | ,@(cond ((or (c-major-mode-is 'c++-mode) (c-major-mode-is 'java-mode)) |
| 956 | `((postfix-if-paren "<" ">"))) ; Templates. |
| 957 | ((c-major-mode-is 'pike-mode) |
| 958 | `((prefix "global" "predef"))) |
| 959 | ((c-major-mode-is 'java-mode) |
| 960 | `((prefix "super")))) |
| 961 | |
| 962 | ;; Postfix. |
| 963 | ,@(when (c-major-mode-is 'c++-mode) |
| 964 | ;; The following need special treatment. |
| 965 | `((prefix "dynamic_cast" "static_cast" |
| 966 | "reinterpret_cast" "const_cast" "typeid"))) |
| 967 | (left-assoc "." |
| 968 | ,@(unless (c-major-mode-is 'java-mode) |
| 969 | '("->"))) |
| 970 | (postfix "++" "--" "[" "]" "(" ")" |
| 971 | ,@(when (c-major-mode-is '(c-mode c++-mode)) |
| 972 | '("<:" ":>" "??(" "??)"))) |
| 973 | |
| 974 | ;; Unary. |
| 975 | (prefix "++" "--" "+" "-" "!" "~" |
| 976 | ,@(when (c-major-mode-is 'c++-mode) '("not" "compl")) |
| 977 | ,@(when (c-major-mode-is '(c-mode c++-mode)) |
| 978 | '("*" "&" "sizeof" "??-")) |
| 979 | ,@(when (c-major-mode-is 'objc-mode) |
| 980 | '("@selector" "@protocol" "@encode")) |
| 981 | ;; The following need special treatment. |
| 982 | ,@(cond ((c-major-mode-is 'c++-mode) |
| 983 | '("new" "delete")) |
| 984 | ((c-major-mode-is 'java-mode) |
| 985 | '("new")) |
| 986 | ((c-major-mode-is 'pike-mode) |
| 987 | '("class" "lambda" "catch" "throw" "gauge"))) |
| 988 | "(" ")" ; Cast. |
| 989 | ,@(when (c-major-mode-is 'pike-mode) |
| 990 | '("[" "]"))) ; Type cast. |
| 991 | |
| 992 | ;; Member selection. |
| 993 | ,@(when (c-major-mode-is 'c++-mode) |
| 994 | `((left-assoc ".*" "->*"))) |
| 995 | |
| 996 | ;; Multiplicative. |
| 997 | (left-assoc "*" "/" "%") |
| 998 | |
| 999 | ;; Additive. |
| 1000 | (left-assoc "+" "-") |
| 1001 | |
| 1002 | ;; Shift. |
| 1003 | (left-assoc "<<" ">>" |
| 1004 | ,@(when (c-major-mode-is 'java-mode) |
| 1005 | '(">>>"))) |
| 1006 | |
| 1007 | ;; Relational. |
| 1008 | (left-assoc "<" ">" "<=" ">=" |
| 1009 | ,@(when (c-major-mode-is 'java-mode) |
| 1010 | '("instanceof"))) |
| 1011 | |
| 1012 | ;; Equality. |
| 1013 | (left-assoc "==" "!=" |
| 1014 | ,@(when (c-major-mode-is 'c++-mode) '("not_eq"))) |
| 1015 | |
| 1016 | ;; Bitwise and. |
| 1017 | (left-assoc "&" |
| 1018 | ,@(when (c-major-mode-is 'c++-mode) '("bitand"))) |
| 1019 | |
| 1020 | ;; Bitwise exclusive or. |
| 1021 | (left-assoc "^" |
| 1022 | ,@(when (c-major-mode-is '(c-mode c++-mode)) |
| 1023 | '("??'")) |
| 1024 | ,@(when (c-major-mode-is 'c++-mode) '("xor"))) |
| 1025 | |
| 1026 | ;; Bitwise or. |
| 1027 | (left-assoc "|" |
| 1028 | ,@(when (c-major-mode-is '(c-mode c++-mode)) |
| 1029 | '("??!")) |
| 1030 | ,@(when (c-major-mode-is 'c++-mode) '("bitor"))) |
| 1031 | |
| 1032 | ;; Logical and. |
| 1033 | (left-assoc "&&" |
| 1034 | ,@(when (c-major-mode-is 'c++-mode) '("and"))) |
| 1035 | |
| 1036 | ;; Logical or. |
| 1037 | (left-assoc "||" |
| 1038 | ,@(when (c-major-mode-is '(c-mode c++-mode)) |
| 1039 | '("??!??!")) |
| 1040 | ,@(when (c-major-mode-is 'c++-mode) '("or"))) |
| 1041 | |
| 1042 | ;; Conditional. |
| 1043 | (right-assoc-sequence "?" ":") |
| 1044 | |
| 1045 | ;; Assignment. |
| 1046 | (right-assoc ,@(c-lang-const c-assignment-operators)) |
| 1047 | |
| 1048 | ;; Exception. |
| 1049 | ,@(when (c-major-mode-is 'c++-mode) |
| 1050 | '((prefix "throw"))) |
| 1051 | |
| 1052 | ;; Sequence. |
| 1053 | (left-assoc ",")) |
| 1054 | |
| 1055 | ;; IDL got its own definition since it has a much smaller operator |
| 1056 | ;; set than the other languages. |
| 1057 | idl `(;; Preprocessor. |
| 1058 | (prefix "#") |
| 1059 | (left-assoc "##") |
| 1060 | ;; Primary. |
| 1061 | ,@(c-lang-const c-identifier-ops) |
| 1062 | ;; Unary. |
| 1063 | (prefix "+" "-" "~") |
| 1064 | ;; Multiplicative. |
| 1065 | (left-assoc "*" "/" "%") |
| 1066 | ;; Additive. |
| 1067 | (left-assoc "+" "-") |
| 1068 | ;; Shift. |
| 1069 | (left-assoc "<<" ">>") |
| 1070 | ;; And. |
| 1071 | (left-assoc "&") |
| 1072 | ;; Xor. |
| 1073 | (left-assoc "^") |
| 1074 | ;; Or. |
| 1075 | (left-assoc "|"))) |
| 1076 | |
| 1077 | (c-lang-defconst c-operator-list |
| 1078 | ;; The operators as a flat list (without duplicates). |
| 1079 | t (c-filter-ops (c-lang-const c-operators) t t)) |
| 1080 | |
| 1081 | (c-lang-defconst c-overloadable-operators |
| 1082 | "List of the operators that are overloadable, in their \"identifier |
| 1083 | form\". See also `c-op-identifier-prefix'." |
| 1084 | t nil |
| 1085 | c++ '("new" "delete" ;; Can be followed by "[]" but we ignore that. |
| 1086 | "+" "-" "*" "/" "%" |
| 1087 | "^" "??'" "xor" "&" "bitand" "|" "??!" "bitor" "~" "??-" "compl" |
| 1088 | "!" "=" "<" ">" "+=" "-=" "*=" "/=" "%=" "^=" |
| 1089 | "??'=" "xor_eq" "&=" "and_eq" "|=" "??!=" "or_eq" |
| 1090 | "<<" ">>" ">>=" "<<=" "==" "!=" "not_eq" "<=" ">=" |
| 1091 | "&&" "and" "||" "??!??!" "or" "++" "--" "," "->*" "->" |
| 1092 | "()" "[]" "<::>" "??(??)") |
| 1093 | ;; These work like identifiers in Pike. |
| 1094 | pike '("`+" "`-" "`&" "`|" "`^" "`<<" "`>>" "`*" "`/" "`%" "`~" |
| 1095 | "`==" "`<" "`>" "`!" "`[]" "`[]=" "`->" "`->=" "`()" "``+" |
| 1096 | "``-" "``&" "``|" "``^" "``<<" "``>>" "``*" "``/" "``%" |
| 1097 | "`+=")) |
| 1098 | |
| 1099 | (c-lang-defconst c-overloadable-operators-regexp |
| 1100 | ;; Regexp tested after an "operator" token in C++. |
| 1101 | t nil |
| 1102 | c++ (c-make-keywords-re nil (c-lang-const c-overloadable-operators))) |
| 1103 | (c-lang-defvar c-overloadable-operators-regexp |
| 1104 | (c-lang-const c-overloadable-operators-regexp)) |
| 1105 | |
| 1106 | (c-lang-defconst c-opt-op-identifier-prefix |
| 1107 | "Regexp matching the token before the ones in |
| 1108 | `c-overloadable-operators' when operators are specified in their |
| 1109 | \"identifier form\". This typically matches \"operator\" in C++ where |
| 1110 | operator functions are specified as e.g. \"operator +\". It's nil in |
| 1111 | languages without operator functions or where the complete operator |
| 1112 | identifier is listed in `c-overloadable-operators'. |
| 1113 | |
| 1114 | This regexp is assumed to not match any non-operator identifier." |
| 1115 | t nil |
| 1116 | c++ (c-make-keywords-re t '("operator"))) |
| 1117 | (c-lang-defvar c-opt-op-identifier-prefix |
| 1118 | (c-lang-const c-opt-op-identifier-prefix)) |
| 1119 | |
| 1120 | ;; Note: the following alias is an old name which was a mis-spelling. It has |
| 1121 | ;; been corrected above and throughout cc-engine.el. It will be removed at |
| 1122 | ;; some release very shortly in the future. ACM, 2006-04-14. |
| 1123 | (defvaralias 'c-opt-op-identitier-prefix 'c-opt-op-identifier-prefix) |
| 1124 | (make-obsolete-variable 'c-opt-op-identitier-prefix 'c-opt-op-identifier-prefix |
| 1125 | "CC Mode 5.31.4, 2006-04-14") |
| 1126 | |
| 1127 | (c-lang-defconst c-other-op-syntax-tokens |
| 1128 | "List of the tokens made up of characters in the punctuation or |
| 1129 | parenthesis syntax classes that have uses other than as expression |
| 1130 | operators." |
| 1131 | t '("{" "}" "(" ")" "[" "]" ";" ":" "," "=" "/*" "*/" "//") |
| 1132 | (c c++ pike) (append '("#" "##" ; Used by cpp. |
| 1133 | "::" "...") |
| 1134 | (c-lang-const c-other-op-syntax-tokens)) |
| 1135 | (c c++) (append '("*") (c-lang-const c-other-op-syntax-tokens)) |
| 1136 | c++ (append '("&" "<%" "%>" "<:" ":>" "%:" "%:%:") |
| 1137 | (c-lang-const c-other-op-syntax-tokens)) |
| 1138 | objc (append '("#" "##" ; Used by cpp. |
| 1139 | "+" "-") (c-lang-const c-other-op-syntax-tokens)) |
| 1140 | idl (append '("#" "##") ; Used by cpp. |
| 1141 | (c-lang-const c-other-op-syntax-tokens)) |
| 1142 | pike (append '("..") |
| 1143 | (c-lang-const c-other-op-syntax-tokens) |
| 1144 | (c-lang-const c-overloadable-operators)) |
| 1145 | awk '("{" "}" "(" ")" "[" "]" ";" "," "=" "/")) |
| 1146 | |
| 1147 | (c-lang-defconst c-all-op-syntax-tokens |
| 1148 | ;; List of all tokens in the punctuation and parenthesis syntax |
| 1149 | ;; classes. |
| 1150 | t (delete-duplicates (append (c-lang-const c-other-op-syntax-tokens) |
| 1151 | (c-lang-const c-operator-list)) |
| 1152 | :test 'string-equal)) |
| 1153 | |
| 1154 | (c-lang-defconst c-nonsymbol-token-char-list |
| 1155 | ;; List containing all chars not in the word, symbol or |
| 1156 | ;; syntactically irrelevant syntax classes, i.e. all punctuation, |
| 1157 | ;; parenthesis and string delimiter chars. |
| 1158 | t (c-with-syntax-table (c-lang-const c-mode-syntax-table) |
| 1159 | ;; Only go through the chars in the printable ASCII range. No |
| 1160 | ;; language so far has 8-bit or widestring operators. |
| 1161 | (let (list (char 32)) |
| 1162 | (while (< char 127) |
| 1163 | (or (memq (char-syntax char) '(?w ?_ ?< ?> ?\ )) |
| 1164 | (setq list (cons (c-int-to-char char) list))) |
| 1165 | (setq char (1+ char))) |
| 1166 | list))) |
| 1167 | |
| 1168 | (c-lang-defconst c-nonsymbol-token-regexp |
| 1169 | ;; Regexp matching all tokens in the punctuation and parenthesis |
| 1170 | ;; syntax classes. Note that this also matches ".", which can start |
| 1171 | ;; a float. |
| 1172 | t (c-make-keywords-re nil |
| 1173 | (c-filter-ops (c-lang-const c-all-op-syntax-tokens) |
| 1174 | t |
| 1175 | "\\`\\(\\s.\\|\\s\(\\|\\s\)\\)+\\'"))) |
| 1176 | (c-lang-defvar c-nonsymbol-token-regexp |
| 1177 | (c-lang-const c-nonsymbol-token-regexp)) |
| 1178 | |
| 1179 | (c-lang-defconst c-assignment-op-regexp |
| 1180 | ;; Regexp matching all assignment operators and only them. The |
| 1181 | ;; beginning of the first submatch is used to detect the end of the |
| 1182 | ;; token, along with the end of the whole match. |
| 1183 | t (if (c-lang-const c-assignment-operators) |
| 1184 | (concat |
| 1185 | ;; Need special case for "=" since it's a prefix of "==". |
| 1186 | "=\\([^=]\\|$\\)" |
| 1187 | "\\|" |
| 1188 | (c-make-keywords-re nil |
| 1189 | (set-difference (c-lang-const c-assignment-operators) |
| 1190 | '("=") |
| 1191 | :test 'string-equal))) |
| 1192 | "\\<\\>")) |
| 1193 | (c-lang-defvar c-assignment-op-regexp |
| 1194 | (c-lang-const c-assignment-op-regexp)) |
| 1195 | |
| 1196 | (c-lang-defconst c-<>-multichar-token-regexp |
| 1197 | ;; Regexp matching all tokens containing "<" or ">" which are longer |
| 1198 | ;; than one char. |
| 1199 | t (c-make-keywords-re nil |
| 1200 | (c-filter-ops (c-lang-const c-all-op-syntax-tokens) |
| 1201 | t |
| 1202 | ".[<>]\\|[<>]."))) |
| 1203 | (c-lang-defvar c-<>-multichar-token-regexp |
| 1204 | (c-lang-const c-<>-multichar-token-regexp)) |
| 1205 | |
| 1206 | (c-lang-defconst c-<-op-cont-regexp |
| 1207 | ;; Regexp matching the second and subsequent characters of all |
| 1208 | ;; multicharacter tokens that begin with "<". |
| 1209 | t (c-make-keywords-re nil |
| 1210 | (c-filter-ops (c-lang-const c-all-op-syntax-tokens) |
| 1211 | t |
| 1212 | "\\`<." |
| 1213 | (lambda (op) (substring op 1))))) |
| 1214 | |
| 1215 | (c-lang-defvar c-<-op-cont-regexp (c-lang-const c-<-op-cont-regexp)) |
| 1216 | |
| 1217 | (c-lang-defconst c->-op-cont-regexp |
| 1218 | ;; Regexp matching the second and subsequent characters of all |
| 1219 | ;; multicharacter tokens that begin with ">". |
| 1220 | t (c-make-keywords-re nil |
| 1221 | (c-filter-ops (c-lang-const c-all-op-syntax-tokens) |
| 1222 | t |
| 1223 | "\\`>." |
| 1224 | (lambda (op) (substring op 1)))) |
| 1225 | java (c-make-keywords-re nil |
| 1226 | (c-filter-ops (c-lang-const c-all-op-syntax-tokens) |
| 1227 | t |
| 1228 | "\\`>[^>]\\|\\`>>[^>]" |
| 1229 | (lambda (op) (substring op 1))))) |
| 1230 | |
| 1231 | (c-lang-defvar c->-op-cont-regexp (c-lang-const c->-op-cont-regexp)) |
| 1232 | |
| 1233 | (c-lang-defconst c-stmt-delim-chars |
| 1234 | ;; The characters that should be considered to bound statements. To |
| 1235 | ;; optimize `c-crosses-statement-barrier-p' somewhat, it's assumed to |
| 1236 | ;; begin with "^" to negate the set. If ? : operators should be |
| 1237 | ;; detected then the string must end with "?:". |
| 1238 | t "^;{}?:") |
| 1239 | (c-lang-defvar c-stmt-delim-chars (c-lang-const c-stmt-delim-chars)) |
| 1240 | |
| 1241 | (c-lang-defconst c-stmt-delim-chars-with-comma |
| 1242 | ;; Variant of `c-stmt-delim-chars' that additionally contains ','. |
| 1243 | t "^;,{}?:") |
| 1244 | (c-lang-defvar c-stmt-delim-chars-with-comma |
| 1245 | (c-lang-const c-stmt-delim-chars-with-comma)) |
| 1246 | |
| 1247 | \f |
| 1248 | ;;; Syntactic whitespace. |
| 1249 | |
| 1250 | (c-lang-defconst c-simple-ws |
| 1251 | "Regexp matching an ordinary whitespace character. |
| 1252 | Does not contain a \\| operator at the top level." |
| 1253 | ;; "\\s " is not enough since it doesn't match line breaks. |
| 1254 | t "\\(\\s \\|[\n\r]\\)") |
| 1255 | |
| 1256 | (c-lang-defconst c-simple-ws-depth |
| 1257 | ;; Number of regexp grouping parens in `c-simple-ws'. |
| 1258 | t (regexp-opt-depth (c-lang-const c-simple-ws))) |
| 1259 | |
| 1260 | (c-lang-defconst c-line-comment-starter |
| 1261 | "String that starts line comments, or nil if such don't exist. |
| 1262 | Line comments are always terminated by newlines. At least one of |
| 1263 | `c-block-comment-starter' and this one is assumed to be set. |
| 1264 | |
| 1265 | Note that it's currently not enough to set this to support a new |
| 1266 | comment style. Other stuff like the syntax table must also be set up |
| 1267 | properly." |
| 1268 | t "//" |
| 1269 | awk "#") |
| 1270 | (c-lang-defvar c-line-comment-starter (c-lang-const c-line-comment-starter)) |
| 1271 | |
| 1272 | (c-lang-defconst c-block-comment-starter |
| 1273 | "String that starts block comments, or nil if such don't exist. |
| 1274 | Block comments are ended by `c-block-comment-ender', which is assumed |
| 1275 | to be set if this is. At least one of `c-line-comment-starter' and |
| 1276 | this one is assumed to be set. |
| 1277 | |
| 1278 | Note that it's currently not enough to set this to support a new |
| 1279 | comment style. Other stuff like the syntax table must also be set up |
| 1280 | properly." |
| 1281 | t "/*" |
| 1282 | awk nil) |
| 1283 | |
| 1284 | (c-lang-defconst c-block-comment-ender |
| 1285 | "String that ends block comments, or nil if such don't exist. |
| 1286 | |
| 1287 | Note that it's currently not enough to set this to support a new |
| 1288 | comment style. Other stuff like the syntax table must also be set up |
| 1289 | properly." |
| 1290 | t "*/" |
| 1291 | awk nil) |
| 1292 | |
| 1293 | (c-lang-defconst c-comment-start-regexp |
| 1294 | ;; Regexp to match the start of any type of comment. |
| 1295 | t (let ((re (c-make-keywords-re nil |
| 1296 | (list (c-lang-const c-line-comment-starter) |
| 1297 | (c-lang-const c-block-comment-starter))))) |
| 1298 | (if (memq 'gen-comment-delim c-emacs-features) |
| 1299 | (concat re "\\|\\s!") |
| 1300 | re))) |
| 1301 | (c-lang-defvar c-comment-start-regexp (c-lang-const c-comment-start-regexp)) |
| 1302 | |
| 1303 | (c-lang-defconst c-block-comment-start-regexp |
| 1304 | ;; Regexp which matches the start of a block comment (if such exists in the |
| 1305 | ;; language) |
| 1306 | t (if (c-lang-const c-block-comment-starter) |
| 1307 | (regexp-quote (c-lang-const c-block-comment-starter)) |
| 1308 | "\\<\\>")) |
| 1309 | (c-lang-defvar c-block-comment-start-regexp |
| 1310 | (c-lang-const c-block-comment-start-regexp)) |
| 1311 | |
| 1312 | (c-lang-defconst c-line-comment-start-regexp |
| 1313 | ;; Regexp which matches the start of a line comment (if such exists in the |
| 1314 | ;; language; it does in all 7 CC Mode languages). |
| 1315 | t (if (c-lang-const c-line-comment-starter) |
| 1316 | (regexp-quote (c-lang-const c-line-comment-starter)) |
| 1317 | "\\<\\>")) |
| 1318 | (c-lang-defvar c-line-comment-start-regexp |
| 1319 | (c-lang-const c-line-comment-start-regexp)) |
| 1320 | |
| 1321 | (c-lang-defconst c-literal-start-regexp |
| 1322 | ;; Regexp to match the start of comments and string literals. |
| 1323 | t (concat (c-lang-const c-comment-start-regexp) |
| 1324 | "\\|" |
| 1325 | (if (memq 'gen-string-delim c-emacs-features) |
| 1326 | "\"|" |
| 1327 | "\""))) |
| 1328 | (c-lang-defvar c-literal-start-regexp (c-lang-const c-literal-start-regexp)) |
| 1329 | |
| 1330 | (c-lang-defconst c-doc-comment-start-regexp |
| 1331 | "Regexp to match the start of documentation comments." |
| 1332 | t "\\<\\>" |
| 1333 | ;; From font-lock.el: `doxygen' uses /*! while others use /**. |
| 1334 | (c c++ objc) "/\\*[*!]" |
| 1335 | java "/\\*\\*" |
| 1336 | pike "/[/*]!") |
| 1337 | (c-lang-defvar c-doc-comment-start-regexp |
| 1338 | (c-lang-const c-doc-comment-start-regexp)) |
| 1339 | |
| 1340 | (c-lang-defconst comment-start |
| 1341 | "String that starts comments inserted with M-; etc. |
| 1342 | `comment-start' is initialized from this." |
| 1343 | ;; Default: Prefer line comments to block comments, and pad with a space. |
| 1344 | t (concat (or (c-lang-const c-line-comment-starter) |
| 1345 | (c-lang-const c-block-comment-starter)) |
| 1346 | " ") |
| 1347 | ;; In C we still default to the block comment style since line |
| 1348 | ;; comments aren't entirely portable. |
| 1349 | c "/* ") |
| 1350 | (c-lang-setvar comment-start (c-lang-const comment-start)) |
| 1351 | |
| 1352 | (c-lang-defconst comment-end |
| 1353 | "String that ends comments inserted with M-; etc. |
| 1354 | `comment-end' is initialized from this." |
| 1355 | ;; Default: Use block comment style if comment-start uses block |
| 1356 | ;; comments, and pad with a space in that case. |
| 1357 | t (if (string-match (concat "\\`\\(" |
| 1358 | (c-lang-const c-block-comment-start-regexp) |
| 1359 | "\\)") |
| 1360 | (c-lang-const comment-start)) |
| 1361 | (concat " " (c-lang-const c-block-comment-ender)) |
| 1362 | "")) |
| 1363 | (c-lang-setvar comment-end (c-lang-const comment-end)) |
| 1364 | |
| 1365 | (c-lang-defconst comment-start-skip |
| 1366 | "Regexp to match the start of a comment plus everything up to its body. |
| 1367 | `comment-start-skip' is initialized from this." |
| 1368 | ;; Default: Allow the last char of the comment starter(s) to be |
| 1369 | ;; repeated, then allow any amount of horizontal whitespace. |
| 1370 | t (concat "\\(" |
| 1371 | (c-concat-separated |
| 1372 | (mapcar (lambda (cs) |
| 1373 | (when cs |
| 1374 | (concat (regexp-quote cs) "+"))) |
| 1375 | (list (c-lang-const c-line-comment-starter) |
| 1376 | (c-lang-const c-block-comment-starter))) |
| 1377 | "\\|") |
| 1378 | "\\)\\s *")) |
| 1379 | (c-lang-setvar comment-start-skip (c-lang-const comment-start-skip)) |
| 1380 | |
| 1381 | (c-lang-defconst c-syntactic-ws-start |
| 1382 | ;; Regexp matching any sequence that can start syntactic whitespace. |
| 1383 | ;; The only uncertain case is '#' when there are cpp directives. |
| 1384 | t (concat "\\s \\|" |
| 1385 | (c-make-keywords-re nil |
| 1386 | (append (list (c-lang-const c-line-comment-starter) |
| 1387 | (c-lang-const c-block-comment-starter) |
| 1388 | (when (c-lang-const c-opt-cpp-prefix) |
| 1389 | "#")) |
| 1390 | '("\n" "\r"))) |
| 1391 | "\\|\\\\[\n\r]" |
| 1392 | (when (memq 'gen-comment-delim c-emacs-features) |
| 1393 | "\\|\\s!"))) |
| 1394 | (c-lang-defvar c-syntactic-ws-start (c-lang-const c-syntactic-ws-start)) |
| 1395 | |
| 1396 | (c-lang-defconst c-syntactic-ws-end |
| 1397 | ;; Regexp matching any single character that might end syntactic whitespace. |
| 1398 | t (concat "\\s \\|" |
| 1399 | (c-make-keywords-re nil |
| 1400 | (append (when (c-lang-const c-block-comment-ender) |
| 1401 | (list |
| 1402 | (string |
| 1403 | (elt (c-lang-const c-block-comment-ender) |
| 1404 | (1- (length |
| 1405 | (c-lang-const c-block-comment-ender))))))) |
| 1406 | '("\n" "\r"))) |
| 1407 | (when (memq 'gen-comment-delim c-emacs-features) |
| 1408 | "\\|\\s!"))) |
| 1409 | (c-lang-defvar c-syntactic-ws-end (c-lang-const c-syntactic-ws-end)) |
| 1410 | |
| 1411 | (c-lang-defconst c-unterminated-block-comment-regexp |
| 1412 | ;; Regexp matching an unterminated block comment that doesn't |
| 1413 | ;; contain line breaks, or nil in languages without block comments. |
| 1414 | ;; Does not contain a \| operator at the top level. |
| 1415 | t (when (c-lang-const c-block-comment-starter) |
| 1416 | (concat |
| 1417 | (regexp-quote (c-lang-const c-block-comment-starter)) |
| 1418 | ;; It's messy to cook together a regexp that matches anything |
| 1419 | ;; but c-block-comment-ender. |
| 1420 | (let ((end (c-lang-const c-block-comment-ender))) |
| 1421 | (cond ((= (length end) 1) |
| 1422 | (concat "[^" end "\n\r]*")) |
| 1423 | ((= (length end) 2) |
| 1424 | (concat "[^" (substring end 0 1) "\n\r]*" |
| 1425 | "\\(" |
| 1426 | (regexp-quote (substring end 0 1)) "+" |
| 1427 | "[^" |
| 1428 | ;; The quoting rules inside char classes are silly. :P |
| 1429 | (cond ((= (elt end 0) (elt end 1)) |
| 1430 | (concat (substring end 0 1) "\n\r")) |
| 1431 | ((= (elt end 1) ?\]) |
| 1432 | (concat (substring end 1 2) "\n\r" |
| 1433 | (substring end 0 1))) |
| 1434 | (t |
| 1435 | (concat (substring end 0 1) "\n\r" |
| 1436 | (substring end 1 2)))) |
| 1437 | "]" |
| 1438 | "[^" (substring end 0 1) "\n\r]*" |
| 1439 | "\\)*")) |
| 1440 | (t |
| 1441 | (error "Can't handle a block comment ender of length %s" |
| 1442 | (length end)))))))) |
| 1443 | |
| 1444 | (c-lang-defconst c-block-comment-regexp |
| 1445 | ;; Regexp matching a block comment that doesn't contain line breaks, |
| 1446 | ;; or nil in languages without block comments. The reason we don't |
| 1447 | ;; allow line breaks is to avoid going very far and risk running out |
| 1448 | ;; of regexp stack; this regexp is intended to handle only short |
| 1449 | ;; comments that might be put in the middle of limited constructs |
| 1450 | ;; like declarations. Does not contain a \| operator at the top |
| 1451 | ;; level. |
| 1452 | t (when (c-lang-const c-unterminated-block-comment-regexp) |
| 1453 | (concat |
| 1454 | (c-lang-const c-unterminated-block-comment-regexp) |
| 1455 | (let ((end (c-lang-const c-block-comment-ender))) |
| 1456 | (cond ((= (length end) 1) |
| 1457 | (regexp-quote end)) |
| 1458 | ((= (length end) 2) |
| 1459 | (concat (regexp-quote (substring end 0 1)) "+" |
| 1460 | (regexp-quote (substring end 1 2)))) |
| 1461 | (t |
| 1462 | (error "Can't handle a block comment ender of length %s" |
| 1463 | (length end)))))))) |
| 1464 | |
| 1465 | (c-lang-defconst c-nonwhite-syntactic-ws |
| 1466 | ;; Regexp matching a piece of syntactic whitespace that isn't a |
| 1467 | ;; sequence of simple whitespace characters. As opposed to |
| 1468 | ;; `c-(forward|backward)-syntactic-ws', this doesn't regard cpp |
| 1469 | ;; directives as syntactic whitespace. |
| 1470 | t (c-concat-separated |
| 1471 | (list (when (c-lang-const c-line-comment-starter) |
| 1472 | (concat (regexp-quote (c-lang-const c-line-comment-starter)) |
| 1473 | "[^\n\r]*[\n\r]")) |
| 1474 | (c-lang-const c-block-comment-regexp) |
| 1475 | "\\\\[\n\r]" |
| 1476 | (when (memq 'gen-comment-delim c-emacs-features) |
| 1477 | "\\s!\\S!*\\s!")) |
| 1478 | "\\|")) |
| 1479 | |
| 1480 | (c-lang-defconst c-syntactic-ws |
| 1481 | ;; Regexp matching syntactic whitespace, including possibly the |
| 1482 | ;; empty string. As opposed to `c-(forward|backward)-syntactic-ws', |
| 1483 | ;; this doesn't regard cpp directives as syntactic whitespace. Does |
| 1484 | ;; not contain a \| operator at the top level. |
| 1485 | t (concat (c-lang-const c-simple-ws) "*" |
| 1486 | "\\(" |
| 1487 | (concat "\\(" (c-lang-const c-nonwhite-syntactic-ws) "\\)" |
| 1488 | (c-lang-const c-simple-ws) "*") |
| 1489 | "\\)*")) |
| 1490 | |
| 1491 | (c-lang-defconst c-syntactic-ws-depth |
| 1492 | ;; Number of regexp grouping parens in `c-syntactic-ws'. |
| 1493 | t (regexp-opt-depth (c-lang-const c-syntactic-ws))) |
| 1494 | |
| 1495 | (c-lang-defconst c-nonempty-syntactic-ws |
| 1496 | ;; Regexp matching syntactic whitespace, which is at least one |
| 1497 | ;; character long. As opposed to `c-(forward|backward)-syntactic-ws', |
| 1498 | ;; this doesn't regard cpp directives as syntactic whitespace. Does |
| 1499 | ;; not contain a \| operator at the top level. |
| 1500 | t (concat "\\(" |
| 1501 | (c-lang-const c-simple-ws) |
| 1502 | "\\|" |
| 1503 | (c-lang-const c-nonwhite-syntactic-ws) |
| 1504 | "\\)+")) |
| 1505 | |
| 1506 | (c-lang-defconst c-nonempty-syntactic-ws-depth |
| 1507 | ;; Number of regexp grouping parens in `c-nonempty-syntactic-ws'. |
| 1508 | t (regexp-opt-depth (c-lang-const c-nonempty-syntactic-ws))) |
| 1509 | |
| 1510 | (c-lang-defconst c-single-line-syntactic-ws |
| 1511 | ;; Regexp matching syntactic whitespace without any line breaks. As |
| 1512 | ;; opposed to `c-(forward|backward)-syntactic-ws', this doesn't |
| 1513 | ;; regard cpp directives as syntactic whitespace. Does not contain |
| 1514 | ;; a \| operator at the top level. |
| 1515 | t (if (c-lang-const c-block-comment-regexp) |
| 1516 | (concat "\\s *\\(" |
| 1517 | (c-lang-const c-block-comment-regexp) |
| 1518 | "\\s *\\)*") |
| 1519 | "\\s *")) |
| 1520 | |
| 1521 | (c-lang-defconst c-single-line-syntactic-ws-depth |
| 1522 | ;; Number of regexp grouping parens in `c-single-line-syntactic-ws'. |
| 1523 | t (regexp-opt-depth (c-lang-const c-single-line-syntactic-ws))) |
| 1524 | |
| 1525 | (c-lang-defconst c-syntactic-eol |
| 1526 | ;; Regexp that matches when there is no syntactically significant |
| 1527 | ;; text before eol. Macros are regarded as syntactically |
| 1528 | ;; significant text here. |
| 1529 | t (concat (c-lang-const c-single-line-syntactic-ws) |
| 1530 | ;; Match eol (possibly inside a block comment or preceded |
| 1531 | ;; by a line continuation backslash), or the beginning of a |
| 1532 | ;; line comment. Note: This has to be modified for awk |
| 1533 | ;; where line comments start with '#'. |
| 1534 | "\\(" |
| 1535 | (c-concat-separated |
| 1536 | (list (when (c-lang-const c-line-comment-starter) |
| 1537 | (regexp-quote (c-lang-const c-line-comment-starter))) |
| 1538 | (when (c-lang-const c-unterminated-block-comment-regexp) |
| 1539 | (concat (c-lang-const c-unterminated-block-comment-regexp) |
| 1540 | "$")) |
| 1541 | "\\\\$" |
| 1542 | "$") |
| 1543 | "\\|") |
| 1544 | "\\)")) |
| 1545 | (c-lang-defvar c-syntactic-eol (c-lang-const c-syntactic-eol)) |
| 1546 | |
| 1547 | \f |
| 1548 | ;;; Defun functions |
| 1549 | |
| 1550 | ;; The Emacs variables beginning-of-defun-function and |
| 1551 | ;; end-of-defun-function will be set so that commands like |
| 1552 | ;; `mark-defun' and `narrow-to-defun' work right. The key sequences |
| 1553 | ;; C-M-a and C-M-e are, however, bound directly to the CC Mode |
| 1554 | ;; functions, allowing optimization for large n. |
| 1555 | (c-lang-defconst beginning-of-defun-function |
| 1556 | "Function to which beginning-of-defun-function will be set." |
| 1557 | t 'c-beginning-of-defun |
| 1558 | awk 'c-awk-beginning-of-defun) |
| 1559 | (c-lang-setvar beginning-of-defun-function |
| 1560 | (c-lang-const beginning-of-defun-function)) |
| 1561 | |
| 1562 | (c-lang-defconst end-of-defun-function |
| 1563 | "Function to which end-of-defun-function will be set." |
| 1564 | t 'c-end-of-defun |
| 1565 | awk 'c-awk-end-of-defun) |
| 1566 | (c-lang-setvar end-of-defun-function (c-lang-const end-of-defun-function)) |
| 1567 | \f |
| 1568 | ;;; In-comment text handling. |
| 1569 | |
| 1570 | (c-lang-defconst c-paragraph-start |
| 1571 | "Regexp to append to `paragraph-start'." |
| 1572 | t "$" |
| 1573 | java "\\(@[a-zA-Z]+\\>\\|$\\)" ; For Javadoc. |
| 1574 | pike "\\(@[a-zA-Z_-]+\\>\\([^{]\\|$\\)\\|$\\)") ; For Pike refdoc. |
| 1575 | (c-lang-defvar c-paragraph-start (c-lang-const c-paragraph-start)) |
| 1576 | |
| 1577 | (c-lang-defconst c-paragraph-separate |
| 1578 | "Regexp to append to `paragraph-separate'." |
| 1579 | t "$" |
| 1580 | pike (c-lang-const c-paragraph-start)) |
| 1581 | (c-lang-defvar c-paragraph-separate (c-lang-const c-paragraph-separate)) |
| 1582 | |
| 1583 | \f |
| 1584 | ;;; Keyword lists. |
| 1585 | |
| 1586 | ;; Note: All and only all language constants containing keyword lists |
| 1587 | ;; should end with "-kwds"; they're automatically collected into the |
| 1588 | ;; `c-kwds-lang-consts' list below and used to build `c-keywords' etc. |
| 1589 | |
| 1590 | (c-lang-defconst c-primitive-type-kwds |
| 1591 | "Primitive type keywords. As opposed to the other keyword lists, the |
| 1592 | keywords listed here are fontified with the type face instead of the |
| 1593 | keyword face. |
| 1594 | |
| 1595 | If any of these also are on `c-type-list-kwds', `c-ref-list-kwds', |
| 1596 | `c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds', |
| 1597 | `c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses |
| 1598 | will be handled. |
| 1599 | |
| 1600 | Do not try to modify this list for end user customizations; the |
| 1601 | `*-font-lock-extra-types' variable, where `*' is the mode prefix, is |
| 1602 | the appropriate place for that." |
| 1603 | t '("char" "double" "float" "int" "long" "short" "signed" |
| 1604 | "unsigned" "void") |
| 1605 | c (append |
| 1606 | '("_Bool" "_Complex" "_Imaginary") ; Conditionally defined in C99. |
| 1607 | (c-lang-const c-primitive-type-kwds)) |
| 1608 | c++ (append |
| 1609 | '("bool" "wchar_t") |
| 1610 | (c-lang-const c-primitive-type-kwds)) |
| 1611 | ;; Objective-C extends C, but probably not the new stuff in C99. |
| 1612 | objc (append |
| 1613 | '("id" "Class" "SEL" "IMP" "BOOL") |
| 1614 | (c-lang-const c-primitive-type-kwds)) |
| 1615 | java '("boolean" "byte" "char" "double" "float" "int" "long" "short" "void") |
| 1616 | idl '("Object" "ValueBase" "any" "boolean" "char" "double" "fixed" "float" |
| 1617 | "long" "octet" "sequence" "short" "string" "void" "wchar" "wstring" |
| 1618 | ;; In CORBA PSDL: |
| 1619 | "ref" |
| 1620 | ;; The following can't really end a type, but we have to specify them |
| 1621 | ;; here due to the assumption in `c-primitive-type-prefix-kwds'. It |
| 1622 | ;; doesn't matter that much. |
| 1623 | "unsigned" "strong") |
| 1624 | pike '(;; this_program isn't really a keyword, but it's practically |
| 1625 | ;; used as a builtin type. |
| 1626 | "array" "float" "function" "int" "mapping" "mixed" "multiset" |
| 1627 | "object" "program" "string" "this_program" "void")) |
| 1628 | |
| 1629 | (c-lang-defconst c-primitive-type-key |
| 1630 | ;; An adorned regexp that matches `c-primitive-type-kwds'. |
| 1631 | t (c-make-keywords-re t (c-lang-const c-primitive-type-kwds))) |
| 1632 | (c-lang-defvar c-primitive-type-key (c-lang-const c-primitive-type-key)) |
| 1633 | |
| 1634 | (c-lang-defconst c-primitive-type-prefix-kwds |
| 1635 | "Keywords that might act as prefixes for primitive types. Assumed to |
| 1636 | be a subset of `c-primitive-type-kwds'." |
| 1637 | t nil |
| 1638 | (c c++) '("long" "short" "signed" "unsigned") |
| 1639 | idl '("long" "unsigned" |
| 1640 | ;; In CORBA PSDL: |
| 1641 | "strong")) |
| 1642 | |
| 1643 | (c-lang-defconst c-typedef-kwds |
| 1644 | "Prefix keyword\(s\) like \"typedef\" which make a type declaration out |
| 1645 | of a variable declaration." |
| 1646 | t '("typedef") |
| 1647 | (awk idl java) nil) |
| 1648 | |
| 1649 | (c-lang-defconst c-typedef-key |
| 1650 | ;; Adorned regexp matching `c-typedef-kwds'. |
| 1651 | t (c-make-keywords-re t (c-lang-const c-typedef-kwds))) |
| 1652 | (c-lang-defvar c-typedef-key (c-lang-const c-typedef-key)) |
| 1653 | |
| 1654 | (c-lang-defconst c-type-prefix-kwds |
| 1655 | "Keywords where the following name - if any - is a type name, and |
| 1656 | where the keyword together with the symbol works as a type in |
| 1657 | declarations. |
| 1658 | |
| 1659 | Note that an alternative if the second part doesn't hold is |
| 1660 | `c-type-list-kwds'. Keywords on this list are typically also present |
| 1661 | on one of the `*-decl-kwds' lists." |
| 1662 | t nil |
| 1663 | c '("struct" "union" "enum") |
| 1664 | c++ (append '("class" "typename") |
| 1665 | (c-lang-const c-type-prefix-kwds c))) |
| 1666 | |
| 1667 | (c-lang-defconst c-type-prefix-key |
| 1668 | ;; Adorned regexp matching `c-type-prefix-kwds'. |
| 1669 | t (c-make-keywords-re t (c-lang-const c-type-prefix-kwds))) |
| 1670 | (c-lang-defvar c-type-prefix-key (c-lang-const c-type-prefix-key)) |
| 1671 | |
| 1672 | (c-lang-defconst c-type-modifier-kwds |
| 1673 | "Type modifier keywords. These can occur almost anywhere in types |
| 1674 | but they don't build a type of themselves. Unlike the keywords on |
| 1675 | `c-primitive-type-kwds', they are fontified with the keyword face and |
| 1676 | not the type face." |
| 1677 | t nil |
| 1678 | c '("const" "restrict" "volatile") |
| 1679 | c++ '("const" "volatile" "throw") |
| 1680 | objc '("const" "volatile")) |
| 1681 | |
| 1682 | (c-lang-defconst c-opt-type-modifier-key |
| 1683 | ;; Adorned regexp matching `c-type-modifier-kwds', or nil in |
| 1684 | ;; languages without such keywords. |
| 1685 | t (and (c-lang-const c-type-modifier-kwds) |
| 1686 | (c-make-keywords-re t (c-lang-const c-type-modifier-kwds)))) |
| 1687 | (c-lang-defvar c-opt-type-modifier-key (c-lang-const c-opt-type-modifier-key)) |
| 1688 | |
| 1689 | (c-lang-defconst c-opt-type-component-key |
| 1690 | ;; An adorned regexp that matches `c-primitive-type-prefix-kwds' and |
| 1691 | ;; `c-type-modifier-kwds', or nil in languages without any of them. |
| 1692 | t (and (or (c-lang-const c-primitive-type-prefix-kwds) |
| 1693 | (c-lang-const c-type-modifier-kwds)) |
| 1694 | (c-make-keywords-re t |
| 1695 | (append (c-lang-const c-primitive-type-prefix-kwds) |
| 1696 | (c-lang-const c-type-modifier-kwds))))) |
| 1697 | (c-lang-defvar c-opt-type-component-key |
| 1698 | (c-lang-const c-opt-type-component-key)) |
| 1699 | |
| 1700 | (c-lang-defconst c-type-start-kwds |
| 1701 | ;; All keywords that can start a type (i.e. are either a type prefix |
| 1702 | ;; or a complete type). |
| 1703 | t (delete-duplicates (append (c-lang-const c-primitive-type-kwds) |
| 1704 | (c-lang-const c-type-prefix-kwds) |
| 1705 | (c-lang-const c-type-modifier-kwds)) |
| 1706 | :test 'string-equal)) |
| 1707 | |
| 1708 | (c-lang-defconst c-class-decl-kwds |
| 1709 | "Keywords introducing declarations where the following block (if any) |
| 1710 | contains another declaration level that should be considered a class. |
| 1711 | |
| 1712 | If any of these also are on `c-type-list-kwds', `c-ref-list-kwds', |
| 1713 | `c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds', |
| 1714 | `c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses |
| 1715 | will be handled. |
| 1716 | |
| 1717 | Note that presence on this list does not automatically treat the |
| 1718 | following identifier as a type; the keyword must also be present on |
| 1719 | `c-type-prefix-kwds' or `c-type-list-kwds' to accomplish that." |
| 1720 | t nil |
| 1721 | c '("struct" "union") |
| 1722 | c++ '("class" "struct" "union") |
| 1723 | objc '("struct" "union" |
| 1724 | "@interface" "@implementation" "@protocol") |
| 1725 | java '("class" "@interface" "interface") |
| 1726 | idl '("component" "eventtype" "exception" "home" "interface" "struct" |
| 1727 | "union" "valuetype" |
| 1728 | ;; In CORBA PSDL: |
| 1729 | "storagehome" "storagetype" |
| 1730 | ;; In CORBA CIDL: |
| 1731 | "catalog" "executor" "manages" "segment") |
| 1732 | pike '("class")) |
| 1733 | |
| 1734 | (c-lang-defconst c-class-key |
| 1735 | ;; Regexp matching the start of a class. |
| 1736 | t (c-make-keywords-re t (c-lang-const c-class-decl-kwds))) |
| 1737 | (c-lang-defvar c-class-key (c-lang-const c-class-key)) |
| 1738 | |
| 1739 | (c-lang-defconst c-brace-list-decl-kwds |
| 1740 | "Keywords introducing declarations where the following block (if |
| 1741 | any) is a brace list. |
| 1742 | |
| 1743 | If any of these also are on `c-type-list-kwds', `c-ref-list-kwds', |
| 1744 | `c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds', |
| 1745 | `c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses |
| 1746 | will be handled." |
| 1747 | t '("enum") |
| 1748 | (awk) nil) |
| 1749 | |
| 1750 | (c-lang-defconst c-brace-list-key |
| 1751 | ;; Regexp matching the start of declarations where the following |
| 1752 | ;; block is a brace list. |
| 1753 | t (c-make-keywords-re t (c-lang-const c-brace-list-decl-kwds))) |
| 1754 | (c-lang-defvar c-brace-list-key (c-lang-const c-brace-list-key)) |
| 1755 | |
| 1756 | (c-lang-defconst c-other-block-decl-kwds |
| 1757 | "Keywords where the following block (if any) contains another |
| 1758 | declaration level that should not be considered a class. For every |
| 1759 | keyword here, CC Mode will add a set of special syntactic symbols for |
| 1760 | those blocks. E.g. if the keyword is \"foo\" then there will be |
| 1761 | `foo-open', `foo-close', and `infoo' symbols. |
| 1762 | |
| 1763 | The intention is that this category should be used for block |
| 1764 | constructs that aren't related to object orientation concepts like |
| 1765 | classes (which thus also include e.g. interfaces, templates, |
| 1766 | contracts, structs, etc). The more pragmatic distinction is that |
| 1767 | while most want some indentation inside classes, it's fairly common |
| 1768 | that they don't want it in some of these constructs, so it should be |
| 1769 | simple to configure that differently from classes. See also |
| 1770 | `c-class-decl-kwds'. |
| 1771 | |
| 1772 | If any of these also are on `c-type-list-kwds', `c-ref-list-kwds', |
| 1773 | `c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds', |
| 1774 | `c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses |
| 1775 | will be handled." |
| 1776 | t nil |
| 1777 | (c objc) '("extern") |
| 1778 | c++ '("namespace" "extern") |
| 1779 | idl '("module" |
| 1780 | ;; In CORBA CIDL: |
| 1781 | "composition")) |
| 1782 | |
| 1783 | (c-lang-defconst c-other-decl-block-key |
| 1784 | ;; Regexp matching the start of blocks besides classes that contain |
| 1785 | ;; another declaration level. |
| 1786 | t (c-make-keywords-re t (c-lang-const c-other-block-decl-kwds))) |
| 1787 | (c-lang-defvar c-other-decl-block-key (c-lang-const c-other-decl-block-key)) |
| 1788 | |
| 1789 | (c-lang-defvar c-other-decl-block-key-in-symbols-alist |
| 1790 | (mapcar |
| 1791 | (lambda (elt) |
| 1792 | (cons elt |
| 1793 | (if (string= elt "extern") |
| 1794 | 'inextern-lang |
| 1795 | (intern (concat "in" elt))))) |
| 1796 | (c-lang-const c-other-block-decl-kwds)) |
| 1797 | "Alist associating keywords in c-other-decl-block-decl-kwds with |
| 1798 | their matching \"in\" syntactic symbols.") |
| 1799 | |
| 1800 | (c-lang-defconst c-typedef-decl-kwds |
| 1801 | "Keywords introducing declarations where the identifier(s) being |
| 1802 | declared are types. |
| 1803 | |
| 1804 | If any of these also are on `c-type-list-kwds', `c-ref-list-kwds', |
| 1805 | `c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds', |
| 1806 | `c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses |
| 1807 | will be handled." |
| 1808 | ;; Default to `c-class-decl-kwds' and `c-brace-list-decl-kwds' |
| 1809 | ;; (since e.g. "Foo" is a type that's being defined in "class Foo |
| 1810 | ;; {...}"). |
| 1811 | t (append (c-lang-const c-class-decl-kwds) |
| 1812 | (c-lang-const c-brace-list-decl-kwds)) |
| 1813 | ;; Languages that have a "typedef" construct. |
| 1814 | (c c++ objc idl pike) (append (c-lang-const c-typedef-decl-kwds) |
| 1815 | '("typedef")) |
| 1816 | ;; Unlike most other languages, exception names are not handled as |
| 1817 | ;; types in IDL since they only can occur in "raises" specs. |
| 1818 | idl (delete "exception" (append (c-lang-const c-typedef-decl-kwds) nil))) |
| 1819 | |
| 1820 | (c-lang-defconst c-typedef-decl-key |
| 1821 | t (c-make-keywords-re t (c-lang-const c-typedef-decl-kwds))) |
| 1822 | (c-lang-defvar c-typedef-decl-key (c-lang-const c-typedef-decl-key)) |
| 1823 | |
| 1824 | (c-lang-defconst c-typeless-decl-kwds |
| 1825 | "Keywords introducing declarations where the \(first) identifier |
| 1826 | \(declarator) follows directly after the keyword, without any type. |
| 1827 | |
| 1828 | If any of these also are on `c-type-list-kwds', `c-ref-list-kwds', |
| 1829 | `c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds', |
| 1830 | `c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses |
| 1831 | will be handled." |
| 1832 | ;; Default to `c-class-decl-kwds' and `c-brace-list-decl-kwds' |
| 1833 | ;; (since e.g. "Foo" is the identifier being defined in "class Foo |
| 1834 | ;; {...}"). |
| 1835 | t (append (c-lang-const c-class-decl-kwds) |
| 1836 | (c-lang-const c-brace-list-decl-kwds)) |
| 1837 | ;; Note: "manages" for CORBA CIDL clashes with its presence on |
| 1838 | ;; `c-type-list-kwds' for IDL. |
| 1839 | idl (append (c-lang-const c-typeless-decl-kwds) |
| 1840 | '("factory" "finder" "native" |
| 1841 | ;; In CORBA PSDL: |
| 1842 | "key" "stores" |
| 1843 | ;; In CORBA CIDL: |
| 1844 | "facet")) |
| 1845 | pike (append (c-lang-const c-class-decl-kwds) |
| 1846 | '("constant"))) |
| 1847 | |
| 1848 | (c-lang-defconst c-modifier-kwds |
| 1849 | "Keywords that can prefix normal declarations of identifiers |
| 1850 | \(and typically act as flags). Things like argument declarations |
| 1851 | inside function headers are also considered declarations in this |
| 1852 | sense. |
| 1853 | |
| 1854 | If any of these also are on `c-type-list-kwds', `c-ref-list-kwds', |
| 1855 | `c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds', |
| 1856 | `c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses |
| 1857 | will be handled." |
| 1858 | t nil |
| 1859 | (c c++) '("auto" "extern" "inline" "register" "static") |
| 1860 | c++ (append '("explicit" "friend" "mutable" "template" "using" "virtual") |
| 1861 | (c-lang-const c-modifier-kwds)) |
| 1862 | objc '("auto" "bycopy" "byref" "extern" "in" "inout" "oneway" "out" "static") |
| 1863 | ;; FIXME: Some of those below ought to be on `c-other-decl-kwds' instead. |
| 1864 | idl '("abstract" "attribute" "const" "consumes" "custom" "emits" "import" |
| 1865 | "in" "inout" "local" "multiple" "oneway" "out" "private" "provides" |
| 1866 | "public" "publishes" "readonly" "typeid" "typeprefix" "uses" |
| 1867 | ;; In CORBA PSDL: |
| 1868 | "primary" "state" |
| 1869 | ;; In CORBA CIDL: |
| 1870 | "bindsTo" "delegatesTo" "implements" "proxy" "storedOn") |
| 1871 | ;; Note: "const" is not used in Java, but it's still a reserved keyword. |
| 1872 | java '("abstract" "const" "final" "native" "private" "protected" "public" |
| 1873 | "static" "strictfp" "synchronized" "transient" "volatile") |
| 1874 | pike '("final" "inline" "local" "nomask" "optional" "private" "protected" |
| 1875 | "public" "static" "variant")) |
| 1876 | |
| 1877 | (c-lang-defconst c-other-decl-kwds |
| 1878 | "Keywords that can start or prefix any declaration level construct, |
| 1879 | besides those on `c-class-decl-kwds', `c-brace-list-decl-kwds', |
| 1880 | `c-other-block-decl-kwds', `c-typedef-decl-kwds', |
| 1881 | `c-typeless-decl-kwds' and `c-modifier-kwds'. |
| 1882 | |
| 1883 | If any of these also are on `c-type-list-kwds', `c-ref-list-kwds', |
| 1884 | `c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds', |
| 1885 | `c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses |
| 1886 | will be handled." |
| 1887 | t nil |
| 1888 | objc '("@class" "@end" "@defs") |
| 1889 | java '("import" "package") |
| 1890 | pike '("import" "inherit")) |
| 1891 | |
| 1892 | (c-lang-defconst c-decl-start-kwds |
| 1893 | "Keywords that always start declarations, wherever they occur. |
| 1894 | This can be used for declarations that aren't recognized by the normal |
| 1895 | combination of `c-decl-prefix-re' and `c-decl-start-re'." |
| 1896 | t nil |
| 1897 | ;; Classes can be declared anywhere in a Pike expression. |
| 1898 | pike '("class")) |
| 1899 | |
| 1900 | (c-lang-defconst c-decl-hangon-kwds |
| 1901 | "Keywords that can occur anywhere in a declaration level construct. |
| 1902 | This is used for self-contained things that can be tacked on anywhere |
| 1903 | on a declaration and that should be ignored to be able to recognize it |
| 1904 | correctly. Typical cases are compiler extensions like |
| 1905 | \"__attribute__\" or \"__declspec\": |
| 1906 | |
| 1907 | __declspec(noreturn) void foo(); |
| 1908 | class __declspec(dllexport) classname {...}; |
| 1909 | void foo() __attribute__((noreturn)); |
| 1910 | |
| 1911 | Note that unrecognized plain symbols are skipped anyway if they occur |
| 1912 | before the type, so such things are not necessary to mention here. |
| 1913 | Mentioning them here is necessary only if they can occur in other |
| 1914 | places, or if they are followed by a construct that must be skipped |
| 1915 | over \(like the parens in the \"__attribute__\" and \"__declspec\" |
| 1916 | examples above). In the last case, they alse need to be present on |
| 1917 | one of `c-type-list-kwds', `c-ref-list-kwds', |
| 1918 | `c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds', |
| 1919 | `c-<>-type-kwds', or `c-<>-arglist-kwds'." |
| 1920 | ;; NB: These are currently not recognized in all parts of a |
| 1921 | ;; declaration. Specifically, they aren't recognized in the middle |
| 1922 | ;; of multi-token types, inside declarators, and between the |
| 1923 | ;; identifier and the arglist paren of a function declaration. |
| 1924 | ;; |
| 1925 | ;; FIXME: This ought to be user customizable since compiler stuff |
| 1926 | ;; like this usually is wrapped in project specific macros. (It'd |
| 1927 | ;; of course be even better if we could cope without knowing this.) |
| 1928 | t nil |
| 1929 | (c c++) '(;; GCC extension. |
| 1930 | "__attribute__" |
| 1931 | ;; MSVC extension. |
| 1932 | "__declspec")) |
| 1933 | |
| 1934 | (c-lang-defconst c-decl-hangon-key |
| 1935 | ;; Adorned regexp matching `c-decl-hangon-kwds'. |
| 1936 | t (c-make-keywords-re t (c-lang-const c-decl-hangon-kwds))) |
| 1937 | (c-lang-defvar c-decl-hangon-key (c-lang-const c-decl-hangon-key)) |
| 1938 | |
| 1939 | (c-lang-defconst c-prefix-spec-kwds |
| 1940 | ;; All keywords that can occur in the preamble of a declaration. |
| 1941 | ;; They typically occur before the type, but they are also matched |
| 1942 | ;; after presumptive types since we often can't be sure that |
| 1943 | ;; something is a type or just some sort of macro in front of the |
| 1944 | ;; declaration. They might be ambiguous with types or type |
| 1945 | ;; prefixes. |
| 1946 | t (delete-duplicates (append (c-lang-const c-class-decl-kwds) |
| 1947 | (c-lang-const c-brace-list-decl-kwds) |
| 1948 | (c-lang-const c-other-block-decl-kwds) |
| 1949 | (c-lang-const c-typedef-decl-kwds) |
| 1950 | (c-lang-const c-typeless-decl-kwds) |
| 1951 | (c-lang-const c-modifier-kwds) |
| 1952 | (c-lang-const c-other-decl-kwds) |
| 1953 | (c-lang-const c-decl-start-kwds) |
| 1954 | (c-lang-const c-decl-hangon-kwds)) |
| 1955 | :test 'string-equal)) |
| 1956 | |
| 1957 | (c-lang-defconst c-prefix-spec-kwds-re |
| 1958 | ;; Adorned regexp of `c-prefix-spec-kwds'. |
| 1959 | t (c-make-keywords-re t (c-lang-const c-prefix-spec-kwds))) |
| 1960 | |
| 1961 | (c-lang-defvar c-prefix-spec-kwds-re (c-lang-const c-prefix-spec-kwds-re)) |
| 1962 | |
| 1963 | (c-lang-defconst c-specifier-key |
| 1964 | ;; Adorned regexp of the keywords in `c-prefix-spec-kwds' that aren't |
| 1965 | ;; ambiguous with types or type prefixes. These are the keywords (like |
| 1966 | ;; extern, namespace, but NOT template) that can modify a declaration. |
| 1967 | t (c-make-keywords-re t |
| 1968 | (set-difference (c-lang-const c-prefix-spec-kwds) |
| 1969 | (append (c-lang-const c-type-start-kwds) |
| 1970 | (c-lang-const c-<>-arglist-kwds)) |
| 1971 | :test 'string-equal))) |
| 1972 | (c-lang-defvar c-specifier-key (c-lang-const c-specifier-key)) |
| 1973 | |
| 1974 | (c-lang-defconst c-postfix-spec-kwds |
| 1975 | ;; Keywords that can occur after argument list of a function header |
| 1976 | ;; declaration, i.e. in the "K&R region". |
| 1977 | t (append (c-lang-const c-postfix-decl-spec-kwds) |
| 1978 | (c-lang-const c-decl-hangon-kwds))) |
| 1979 | |
| 1980 | (c-lang-defconst c-not-decl-init-keywords |
| 1981 | ;; Adorned regexp matching all keywords that can't appear at the |
| 1982 | ;; start of a declaration. |
| 1983 | t (c-make-keywords-re t |
| 1984 | (set-difference (c-lang-const c-keywords) |
| 1985 | (append (c-lang-const c-type-start-kwds) |
| 1986 | (c-lang-const c-prefix-spec-kwds)) |
| 1987 | :test 'string-equal))) |
| 1988 | (c-lang-defvar c-not-decl-init-keywords |
| 1989 | (c-lang-const c-not-decl-init-keywords)) |
| 1990 | |
| 1991 | (c-lang-defconst c-not-primitive-type-keywords |
| 1992 | "List of all keywords apart from primitive types (like \"int\")." |
| 1993 | t (set-difference (c-lang-const c-keywords) |
| 1994 | (c-lang-const c-primitive-type-kwds) |
| 1995 | :test 'string-equal) |
| 1996 | ;; The "more" for C++ is the QT keyword (as in "more slots:"). |
| 1997 | ;; This variable is intended for use in c-beginning-of-statement-1. |
| 1998 | c++ (append (c-lang-const c-not-primitive-type-keywords) '("more"))) |
| 1999 | |
| 2000 | (c-lang-defconst c-not-primitive-type-keywords-regexp |
| 2001 | t (c-make-keywords-re t |
| 2002 | (c-lang-const c-not-primitive-type-keywords))) |
| 2003 | (c-lang-defvar c-not-primitive-type-keywords-regexp |
| 2004 | (c-lang-const c-not-primitive-type-keywords-regexp)) |
| 2005 | |
| 2006 | (c-lang-defconst c-protection-kwds |
| 2007 | "Access protection label keywords in classes." |
| 2008 | t nil |
| 2009 | c++ '("private" "protected" "public") |
| 2010 | objc '("@private" "@protected" "@public")) |
| 2011 | |
| 2012 | (c-lang-defconst c-block-decls-with-vars |
| 2013 | "Keywords introducing declarations that can contain a block which |
| 2014 | might be followed by variable declarations, e.g. like \"foo\" in |
| 2015 | \"class Foo { ... } foo;\". So if there is a block in a declaration |
| 2016 | like that, it ends with the following ';' and not right away. |
| 2017 | |
| 2018 | The keywords on list are assumed to also be present on one of the |
| 2019 | `*-decl-kwds' lists." |
| 2020 | t nil |
| 2021 | (c objc) '("struct" "union" "enum" "typedef") |
| 2022 | c++ '("class" "struct" "union" "enum" "typedef")) |
| 2023 | |
| 2024 | (c-lang-defconst c-opt-block-decls-with-vars-key |
| 2025 | ;; Regexp matching the `c-block-decls-with-vars' keywords, or nil in |
| 2026 | ;; languages without such constructs. |
| 2027 | t (and (c-lang-const c-block-decls-with-vars) |
| 2028 | (c-make-keywords-re t (c-lang-const c-block-decls-with-vars)))) |
| 2029 | (c-lang-defvar c-opt-block-decls-with-vars-key |
| 2030 | (c-lang-const c-opt-block-decls-with-vars-key)) |
| 2031 | |
| 2032 | (c-lang-defconst c-postfix-decl-spec-kwds |
| 2033 | "Keywords introducing extra declaration specifiers in the region |
| 2034 | between the header and the body \(i.e. the \"K&R-region\") in |
| 2035 | declarations." |
| 2036 | t nil |
| 2037 | java '("extends" "implements" "throws") |
| 2038 | idl '("context" "getraises" "manages" "primarykey" "raises" "setraises" |
| 2039 | "supports" |
| 2040 | ;; In CORBA PSDL: |
| 2041 | "as" "const" "implements" "of" "ref")) |
| 2042 | |
| 2043 | (c-lang-defconst c-postfix-decl-spec-key |
| 2044 | ;; Regexp matching the keywords in `c-postfix-decl-spec-kwds'. |
| 2045 | t (c-make-keywords-re t (c-lang-const c-postfix-decl-spec-kwds))) |
| 2046 | (c-lang-defvar c-postfix-decl-spec-key |
| 2047 | (c-lang-const c-postfix-decl-spec-key)) |
| 2048 | |
| 2049 | (c-lang-defconst c-nonsymbol-sexp-kwds |
| 2050 | "Keywords that may be followed by a nonsymbol sexp before whatever |
| 2051 | construct it's part of continues." |
| 2052 | t nil |
| 2053 | (c c++ objc) '("extern")) |
| 2054 | |
| 2055 | (c-lang-defconst c-type-list-kwds |
| 2056 | "Keywords that may be followed by a comma separated list of type |
| 2057 | identifiers, where each optionally can be prefixed by keywords. (Can |
| 2058 | also be used for the special case when the list can contain only one |
| 2059 | element.) |
| 2060 | |
| 2061 | Assumed to be mutually exclusive with `c-ref-list-kwds'. There's no |
| 2062 | reason to put keywords on this list if they are on `c-type-prefix-kwds'. |
| 2063 | There's also no reason to add keywords that prefixes a normal |
| 2064 | declaration consisting of a type followed by a declarator (list), so |
| 2065 | the keywords on `c-modifier-kwds' should normally not be listed here |
| 2066 | either. |
| 2067 | |
| 2068 | Note: Use `c-typeless-decl-kwds' for keywords followed by a function |
| 2069 | or variable identifier (that's being defined)." |
| 2070 | t nil |
| 2071 | c++ '("operator") |
| 2072 | objc '("@class") |
| 2073 | java '("import" "new" "extends" "super" "implements" "throws") |
| 2074 | idl '("manages" "native" "primarykey" "supports" |
| 2075 | ;; In CORBA PSDL: |
| 2076 | "as" "implements" "of" "scope") |
| 2077 | pike '("inherit")) |
| 2078 | |
| 2079 | (c-lang-defconst c-ref-list-kwds |
| 2080 | "Keywords that may be followed by a comma separated list of |
| 2081 | reference (i.e. namespace/scope/module) identifiers, where each |
| 2082 | optionally can be prefixed by keywords. (Can also be used for the |
| 2083 | special case when the list can contain only one element.) Assumed to |
| 2084 | be mutually exclusive with `c-type-list-kwds'. |
| 2085 | |
| 2086 | Note: Use `c-typeless-decl-kwds' for keywords followed by a function |
| 2087 | or variable identifier (that's being defined)." |
| 2088 | t nil |
| 2089 | c++ '("namespace") |
| 2090 | java '("package") |
| 2091 | idl '("import" "module" |
| 2092 | ;; In CORBA CIDL: |
| 2093 | "composition") |
| 2094 | pike '("import")) |
| 2095 | |
| 2096 | (c-lang-defconst c-colon-type-list-kwds |
| 2097 | "Keywords that may be followed (not necessarily directly) by a colon |
| 2098 | and then a comma separated list of type identifiers, where each |
| 2099 | optionally can be prefixed by keywords. (Can also be used for the |
| 2100 | special case when the list can contain only one element.)" |
| 2101 | t nil |
| 2102 | c++ '("class" "struct") |
| 2103 | idl '("component" "eventtype" "home" "interface" "valuetype" |
| 2104 | ;; In CORBA PSDL: |
| 2105 | "storagehome" "storagetype")) |
| 2106 | |
| 2107 | (c-lang-defconst c-colon-type-list-re |
| 2108 | "Regexp matched after the keywords in `c-colon-type-list-kwds' to skip |
| 2109 | forward to the colon. The end of the match is assumed to be directly |
| 2110 | after the colon, so the regexp should end with \":\". Must be a |
| 2111 | regexp if `c-colon-type-list-kwds' isn't nil." |
| 2112 | t (if (c-lang-const c-colon-type-list-kwds) |
| 2113 | ;; Disallow various common punctuation chars that can't come |
| 2114 | ;; before the ":" that starts the inherit list after "class" |
| 2115 | ;; or "struct" in C++. (Also used as default for other |
| 2116 | ;; languages.) |
| 2117 | "[^\]\[{}();,/#=:]*:")) |
| 2118 | (c-lang-defvar c-colon-type-list-re (c-lang-const c-colon-type-list-re)) |
| 2119 | |
| 2120 | (c-lang-defconst c-paren-nontype-kwds |
| 2121 | "Keywords that may be followed by a parenthesis expression that doesn't |
| 2122 | contain type identifiers." |
| 2123 | t nil |
| 2124 | (c c++) '(;; GCC extension. |
| 2125 | "__attribute__" |
| 2126 | ;; MSVC extension. |
| 2127 | "__declspec")) |
| 2128 | |
| 2129 | (c-lang-defconst c-paren-type-kwds |
| 2130 | "Keywords that may be followed by a parenthesis expression containing |
| 2131 | type identifiers separated by arbitrary tokens." |
| 2132 | t nil |
| 2133 | c++ '("throw") |
| 2134 | objc '("@defs") |
| 2135 | idl '("switch") |
| 2136 | pike '("array" "function" "int" "mapping" "multiset" "object" "program")) |
| 2137 | |
| 2138 | (c-lang-defconst c-paren-any-kwds |
| 2139 | t (delete-duplicates (append (c-lang-const c-paren-nontype-kwds) |
| 2140 | (c-lang-const c-paren-type-kwds)) |
| 2141 | :test 'string-equal)) |
| 2142 | |
| 2143 | (c-lang-defconst c-<>-type-kwds |
| 2144 | "Keywords that may be followed by an angle bracket expression |
| 2145 | containing type identifiers separated by \",\". The difference from |
| 2146 | `c-<>-arglist-kwds' is that unknown names are taken to be types and |
| 2147 | not other identifiers. `c-recognize-<>-arglists' is assumed to be set |
| 2148 | if this isn't nil." |
| 2149 | t nil |
| 2150 | objc '("id") |
| 2151 | idl '("sequence" |
| 2152 | ;; In CORBA PSDL: |
| 2153 | "ref")) |
| 2154 | |
| 2155 | (c-lang-defconst c-<>-arglist-kwds |
| 2156 | "Keywords that can be followed by a C++ style template arglist; see |
| 2157 | `c-recognize-<>-arglists' for details. That language constant is |
| 2158 | assumed to be set if this isn't nil." |
| 2159 | t nil |
| 2160 | c++ '("template") |
| 2161 | idl '("fixed" "string" "wstring")) |
| 2162 | |
| 2163 | (c-lang-defconst c-<>-sexp-kwds |
| 2164 | ;; All keywords that can be followed by an angle bracket sexp. |
| 2165 | t (delete-duplicates (append (c-lang-const c-<>-type-kwds) |
| 2166 | (c-lang-const c-<>-arglist-kwds)) |
| 2167 | :test 'string-equal)) |
| 2168 | |
| 2169 | (c-lang-defconst c-opt-<>-sexp-key |
| 2170 | ;; Adorned regexp matching keywords that can be followed by an angle |
| 2171 | ;; bracket sexp. Always set when `c-recognize-<>-arglists' is. |
| 2172 | t (c-make-keywords-re t (c-lang-const c-<>-sexp-kwds))) |
| 2173 | (c-lang-defvar c-opt-<>-sexp-key (c-lang-const c-opt-<>-sexp-key)) |
| 2174 | |
| 2175 | (c-lang-defconst c-brace-id-list-kwds |
| 2176 | "Keywords that may be followed by a brace block containing a comma |
| 2177 | separated list of identifier definitions, i.e. like the list of |
| 2178 | identifiers that follows the type in a normal declaration." |
| 2179 | t (c-lang-const c-brace-list-decl-kwds)) |
| 2180 | |
| 2181 | (c-lang-defconst c-block-stmt-1-kwds |
| 2182 | "Statement keywords followed directly by a substatement." |
| 2183 | t '("do" "else") |
| 2184 | c++ '("do" "else" "try") |
| 2185 | objc '("do" "else" "@finally" "@try") |
| 2186 | java '("do" "else" "finally" "try") |
| 2187 | idl nil) |
| 2188 | |
| 2189 | (c-lang-defconst c-block-stmt-1-key |
| 2190 | ;; Regexp matching the start of any statement followed directly by a |
| 2191 | ;; substatement (doesn't match a bare block, however). |
| 2192 | t (c-make-keywords-re t (c-lang-const c-block-stmt-1-kwds))) |
| 2193 | (c-lang-defvar c-block-stmt-1-key (c-lang-const c-block-stmt-1-key)) |
| 2194 | |
| 2195 | (c-lang-defconst c-block-stmt-1-2-kwds |
| 2196 | "Statement keywords optionally followed by a paren sexp. |
| 2197 | Keywords here should also be in `c-block-stmt-1-kwds'." |
| 2198 | t nil |
| 2199 | java '("try")) |
| 2200 | |
| 2201 | (c-lang-defconst c-block-stmt-1-2-key |
| 2202 | ;; Regexp matching the start of a statement which may be followed by a |
| 2203 | ;; paren sexp and will then be followed by a substatement. |
| 2204 | t (c-make-keywords-re t (c-lang-const c-block-stmt-1-2-kwds))) |
| 2205 | (c-lang-defvar c-block-stmt-1-2-key (c-lang-const c-block-stmt-1-2-key)) |
| 2206 | |
| 2207 | (c-lang-defconst c-block-stmt-2-kwds |
| 2208 | "Statement keywords followed by a paren sexp and then by a substatement." |
| 2209 | t '("for" "if" "switch" "while") |
| 2210 | c++ '("for" "if" "switch" "while" "catch") |
| 2211 | objc '("for" "if" "switch" "while" "@catch" "@synchronized") |
| 2212 | java '("for" "if" "switch" "while" "catch" "synchronized") |
| 2213 | idl nil |
| 2214 | pike '("for" "if" "switch" "while" "foreach") |
| 2215 | awk '("for" "if" "while")) |
| 2216 | |
| 2217 | (c-lang-defconst c-block-stmt-2-key |
| 2218 | ;; Regexp matching the start of any statement followed by a paren sexp |
| 2219 | ;; and then by a substatement. |
| 2220 | t (c-make-keywords-re t (c-lang-const c-block-stmt-2-kwds))) |
| 2221 | (c-lang-defvar c-block-stmt-2-key (c-lang-const c-block-stmt-2-key)) |
| 2222 | |
| 2223 | (c-lang-defconst c-block-stmt-kwds |
| 2224 | ;; Union of `c-block-stmt-1-kwds' and `c-block-stmt-2-kwds'. |
| 2225 | t (delete-duplicates (append (c-lang-const c-block-stmt-1-kwds) |
| 2226 | (c-lang-const c-block-stmt-2-kwds)) |
| 2227 | :test 'string-equal)) |
| 2228 | |
| 2229 | (c-lang-defconst c-opt-block-stmt-key |
| 2230 | ;; Regexp matching the start of any statement that has a |
| 2231 | ;; substatement (except a bare block). Nil in languages that |
| 2232 | ;; don't have such constructs. |
| 2233 | t (if (or (c-lang-const c-block-stmt-1-kwds) |
| 2234 | (c-lang-const c-block-stmt-2-kwds)) |
| 2235 | (c-make-keywords-re t |
| 2236 | (append (c-lang-const c-block-stmt-1-kwds) |
| 2237 | (c-lang-const c-block-stmt-2-kwds))))) |
| 2238 | (c-lang-defvar c-opt-block-stmt-key (c-lang-const c-opt-block-stmt-key)) |
| 2239 | |
| 2240 | (c-lang-defconst c-simple-stmt-kwds |
| 2241 | "Statement keywords followed by an expression or nothing." |
| 2242 | t '("break" "continue" "goto" "return") |
| 2243 | objc '("break" "continue" "goto" "return" "@throw") |
| 2244 | ;; Note: `goto' is not valid in Java, but the keyword is still reserved. |
| 2245 | java '("break" "continue" "goto" "return" "throw") |
| 2246 | idl nil |
| 2247 | pike '("break" "continue" "return") |
| 2248 | awk '(;; Not sure about "delete", "exit", "getline", etc. ; ACM 2002/5/30 |
| 2249 | "break" "continue" "return" "delete" "exit" "getline" "next" |
| 2250 | "nextfile" "print" "printf")) |
| 2251 | |
| 2252 | (c-lang-defconst c-simple-stmt-key |
| 2253 | ;; Adorned regexp matching `c-simple-stmt-kwds'. |
| 2254 | t (c-make-keywords-re t (c-lang-const c-simple-stmt-kwds))) |
| 2255 | (c-lang-defvar c-simple-stmt-key (c-lang-const c-simple-stmt-key)) |
| 2256 | |
| 2257 | (c-lang-defconst c-paren-stmt-kwds |
| 2258 | "Statement keywords followed by a parenthesis expression that |
| 2259 | nevertheless contains a list separated with ';' and not ','." |
| 2260 | t '("for") |
| 2261 | idl nil) |
| 2262 | |
| 2263 | (c-lang-defconst c-paren-stmt-key |
| 2264 | ;; Adorned regexp matching `c-paren-stmt-kwds'. |
| 2265 | t (c-make-keywords-re t (c-lang-const c-paren-stmt-kwds))) |
| 2266 | (c-lang-defvar c-paren-stmt-key (c-lang-const c-paren-stmt-key)) |
| 2267 | |
| 2268 | (c-lang-defconst c-asm-stmt-kwds |
| 2269 | "Statement keywords followed by an assembler expression." |
| 2270 | t nil |
| 2271 | (c c++) '("asm" "__asm__")) ;; Not standard, but common. |
| 2272 | |
| 2273 | (c-lang-defconst c-opt-asm-stmt-key |
| 2274 | ;; Regexp matching the start of an assembler statement. Nil in |
| 2275 | ;; languages that don't support that. |
| 2276 | t (if (c-lang-const c-asm-stmt-kwds) |
| 2277 | (c-make-keywords-re t (c-lang-const c-asm-stmt-kwds)))) |
| 2278 | (c-lang-defvar c-opt-asm-stmt-key (c-lang-const c-opt-asm-stmt-key)) |
| 2279 | |
| 2280 | (c-lang-defconst c-case-kwds |
| 2281 | "The keyword\(s) which introduce a \"case\" like construct. |
| 2282 | This construct is \"<keyword> <expression> :\"." |
| 2283 | t '("case") |
| 2284 | awk nil) |
| 2285 | |
| 2286 | (c-lang-defconst c-case-kwds-regexp |
| 2287 | ;; Adorned regexp matching any "case"-like keyword. |
| 2288 | t (c-make-keywords-re t (c-lang-const c-case-kwds))) |
| 2289 | (c-lang-defvar c-case-kwds-regexp (c-lang-const c-case-kwds-regexp)) |
| 2290 | |
| 2291 | (c-lang-defconst c-label-kwds |
| 2292 | "Keywords introducing colon terminated labels in blocks." |
| 2293 | t '("case" "default")) |
| 2294 | |
| 2295 | (c-lang-defconst c-label-kwds-regexp |
| 2296 | ;; Adorned regexp matching any keyword that introduces a label. |
| 2297 | t (c-make-keywords-re t (c-lang-const c-label-kwds))) |
| 2298 | (c-lang-defvar c-label-kwds-regexp (c-lang-const c-label-kwds-regexp)) |
| 2299 | |
| 2300 | (c-lang-defconst c-before-label-kwds |
| 2301 | "Keywords that might be followed by a label identifier." |
| 2302 | t '("goto") |
| 2303 | (java pike) (append '("break" "continue") |
| 2304 | (c-lang-const c-before-label-kwds)) |
| 2305 | idl nil |
| 2306 | awk nil) |
| 2307 | |
| 2308 | (c-lang-defconst c-constant-kwds |
| 2309 | "Keywords for constants." |
| 2310 | t nil |
| 2311 | (c c++) '("NULL" ;; Not a keyword, but practically works as one. |
| 2312 | "false" "true") ; Defined in C99. |
| 2313 | objc '("nil" "Nil" "YES" "NO" "NS_DURING" "NS_HANDLER" "NS_ENDHANDLER") |
| 2314 | idl '("TRUE" "FALSE") |
| 2315 | java '("true" "false" "null") ; technically "literals", not keywords |
| 2316 | pike '("UNDEFINED")) ;; Not a keyword, but practically works as one. |
| 2317 | |
| 2318 | (c-lang-defconst c-primary-expr-kwds |
| 2319 | "Keywords besides constants and operators that start primary expressions." |
| 2320 | t nil |
| 2321 | c++ '("operator" "this") |
| 2322 | objc '("super" "self") |
| 2323 | java '("this") |
| 2324 | pike '("this")) ;; Not really a keyword, but practically works as one. |
| 2325 | |
| 2326 | (c-lang-defconst c-expr-kwds |
| 2327 | ;; Keywords that can occur anywhere in expressions. Built from |
| 2328 | ;; `c-primary-expr-kwds' and all keyword operators in `c-operators'. |
| 2329 | t (delete-duplicates |
| 2330 | (append (c-lang-const c-primary-expr-kwds) |
| 2331 | (c-filter-ops (c-lang-const c-operator-list) |
| 2332 | t |
| 2333 | "\\`\\(\\w\\|\\s_\\)+\\'")) |
| 2334 | :test 'string-equal)) |
| 2335 | |
| 2336 | (c-lang-defconst c-lambda-kwds |
| 2337 | "Keywords that start lambda constructs, i.e. function definitions in |
| 2338 | expressions." |
| 2339 | t nil |
| 2340 | pike '("lambda")) |
| 2341 | |
| 2342 | (c-lang-defconst c-inexpr-block-kwds |
| 2343 | "Keywords that start constructs followed by statement blocks which can |
| 2344 | be used in expressions \(the gcc extension for this in C and C++ is |
| 2345 | handled separately by `c-recognize-paren-inexpr-blocks')." |
| 2346 | t nil |
| 2347 | pike '("catch" "gauge")) |
| 2348 | |
| 2349 | (c-lang-defconst c-inexpr-class-kwds |
| 2350 | "Keywords that can start classes inside expressions." |
| 2351 | t nil |
| 2352 | java '("new") |
| 2353 | pike '("class")) |
| 2354 | |
| 2355 | (c-lang-defconst c-inexpr-brace-list-kwds |
| 2356 | "Keywords that can start brace list blocks inside expressions. |
| 2357 | Note that Java specific rules are currently applied to tell this from |
| 2358 | `c-inexpr-class-kwds'." |
| 2359 | t nil |
| 2360 | java '("new")) |
| 2361 | |
| 2362 | (c-lang-defconst c-opt-inexpr-brace-list-key |
| 2363 | ;; Regexp matching the start of a brace list in an expression, or |
| 2364 | ;; nil in languages that don't have such things. This should not |
| 2365 | ;; match brace lists recognized through `c-special-brace-lists'. |
| 2366 | t (and (c-lang-const c-inexpr-brace-list-kwds) |
| 2367 | (c-make-keywords-re t (c-lang-const c-inexpr-brace-list-kwds)))) |
| 2368 | (c-lang-defvar c-opt-inexpr-brace-list-key |
| 2369 | (c-lang-const c-opt-inexpr-brace-list-key)) |
| 2370 | |
| 2371 | (c-lang-defconst c-decl-block-key |
| 2372 | ;; Regexp matching keywords in any construct that contain another |
| 2373 | ;; declaration level, i.e. that isn't followed by a function block |
| 2374 | ;; or brace list. When the first submatch matches, it's an |
| 2375 | ;; unambiguous construct, otherwise it's an ambiguous match that |
| 2376 | ;; might also be the return type of a function declaration. |
| 2377 | t (let* ((decl-kwds (append (c-lang-const c-class-decl-kwds) |
| 2378 | (c-lang-const c-other-block-decl-kwds) |
| 2379 | (c-lang-const c-inexpr-class-kwds))) |
| 2380 | (unambiguous (set-difference decl-kwds |
| 2381 | (c-lang-const c-type-start-kwds) |
| 2382 | :test 'string-equal)) |
| 2383 | (ambiguous (intersection decl-kwds |
| 2384 | (c-lang-const c-type-start-kwds) |
| 2385 | :test 'string-equal))) |
| 2386 | (if ambiguous |
| 2387 | (concat (c-make-keywords-re t unambiguous) |
| 2388 | "\\|" |
| 2389 | (c-make-keywords-re t ambiguous)) |
| 2390 | (c-make-keywords-re t unambiguous)))) |
| 2391 | (c-lang-defvar c-decl-block-key (c-lang-const c-decl-block-key)) |
| 2392 | |
| 2393 | (c-lang-defconst c-bitfield-kwds |
| 2394 | "Keywords that can introduce bitfields." |
| 2395 | t nil |
| 2396 | (c c++ objc) '("char" "int" "long" "signed" "unsigned")) |
| 2397 | |
| 2398 | (c-lang-defconst c-opt-bitfield-key |
| 2399 | ;; Regexp matching the start of a bitfield (not uniquely), or nil in |
| 2400 | ;; languages without bitfield support. |
| 2401 | t nil |
| 2402 | (c c++) (c-make-keywords-re t (c-lang-const c-bitfield-kwds))) |
| 2403 | (c-lang-defvar c-opt-bitfield-key (c-lang-const c-opt-bitfield-key)) |
| 2404 | |
| 2405 | (c-lang-defconst c-other-kwds |
| 2406 | "Keywords not accounted for by any other `*-kwds' language constant." |
| 2407 | t nil |
| 2408 | idl '("truncatable" |
| 2409 | ;; In CORBA CIDL: (These are declaration keywords that never |
| 2410 | ;; can start a declaration.) |
| 2411 | "entity" "process" "service" "session" "storage")) |
| 2412 | |
| 2413 | \f |
| 2414 | ;;; Constants built from keywords. |
| 2415 | |
| 2416 | ;; Note: No `*-kwds' language constants may be defined below this point. |
| 2417 | |
| 2418 | (eval-and-compile |
| 2419 | (defconst c-kwds-lang-consts |
| 2420 | ;; List of all the language constants that contain keyword lists. |
| 2421 | (let (list) |
| 2422 | (mapatoms (lambda (sym) |
| 2423 | (when (and (boundp sym) |
| 2424 | (string-match "-kwds\\'" (symbol-name sym))) |
| 2425 | ;; Make the list of globally interned symbols |
| 2426 | ;; instead of ones interned in `c-lang-constants'. |
| 2427 | (setq list (cons (intern (symbol-name sym)) list)))) |
| 2428 | c-lang-constants) |
| 2429 | list))) |
| 2430 | |
| 2431 | (c-lang-defconst c-keywords |
| 2432 | ;; All keywords as a list. |
| 2433 | t (delete-duplicates |
| 2434 | (c-lang-defconst-eval-immediately |
| 2435 | `(append ,@(mapcar (lambda (kwds-lang-const) |
| 2436 | `(c-lang-const ,kwds-lang-const)) |
| 2437 | c-kwds-lang-consts) |
| 2438 | nil)) |
| 2439 | :test 'string-equal)) |
| 2440 | |
| 2441 | (c-lang-defconst c-keywords-regexp |
| 2442 | ;; All keywords as an adorned regexp. |
| 2443 | t (c-make-keywords-re t (c-lang-const c-keywords))) |
| 2444 | (c-lang-defvar c-keywords-regexp (c-lang-const c-keywords-regexp)) |
| 2445 | |
| 2446 | (c-lang-defconst c-keyword-member-alist |
| 2447 | ;; An alist with all the keywords in the cars. The cdr for each |
| 2448 | ;; keyword is a list of the symbols for the `*-kwds' lists that |
| 2449 | ;; contains it. |
| 2450 | t (let ((kwd-list-alist |
| 2451 | (c-lang-defconst-eval-immediately |
| 2452 | `(list ,@(mapcar (lambda (kwds-lang-const) |
| 2453 | `(cons ',kwds-lang-const |
| 2454 | (c-lang-const ,kwds-lang-const))) |
| 2455 | c-kwds-lang-consts)))) |
| 2456 | lang-const kwd-list kwd |
| 2457 | result-alist elem) |
| 2458 | (while kwd-list-alist |
| 2459 | (setq lang-const (caar kwd-list-alist) |
| 2460 | kwd-list (cdar kwd-list-alist) |
| 2461 | kwd-list-alist (cdr kwd-list-alist)) |
| 2462 | (while kwd-list |
| 2463 | (setq kwd (car kwd-list) |
| 2464 | kwd-list (cdr kwd-list)) |
| 2465 | (unless (setq elem (assoc kwd result-alist)) |
| 2466 | (setq result-alist (cons (setq elem (list kwd)) result-alist))) |
| 2467 | (unless (memq lang-const (cdr elem)) |
| 2468 | (setcdr elem (cons lang-const (cdr elem)))))) |
| 2469 | result-alist)) |
| 2470 | |
| 2471 | (c-lang-defvar c-keywords-obarray |
| 2472 | ;; An obarray containing all keywords as symbols. The property list |
| 2473 | ;; of each symbol has a non-nil entry for the specific `*-kwds' |
| 2474 | ;; lists it's a member of. |
| 2475 | ;; |
| 2476 | ;; E.g. to see whether the string str contains a keyword on |
| 2477 | ;; `c-class-decl-kwds', one can do like this: |
| 2478 | ;; (get (intern-soft str c-keyword-obarray) 'c-class-decl-kwds) |
| 2479 | ;; Which preferably is written using the associated functions in |
| 2480 | ;; cc-engine: |
| 2481 | ;; (c-keyword-member (c-keyword-sym str) 'c-class-decl-kwds) |
| 2482 | |
| 2483 | ;; The obarray is not stored directly as a language constant since |
| 2484 | ;; the printed representation for obarrays used in .elc files isn't |
| 2485 | ;; complete. |
| 2486 | |
| 2487 | (let* ((alist (c-lang-const c-keyword-member-alist)) |
| 2488 | kwd lang-const-list |
| 2489 | (obarray (make-vector (* (length alist) 2) 0))) |
| 2490 | (while alist |
| 2491 | (setq kwd (caar alist) |
| 2492 | lang-const-list (cdar alist) |
| 2493 | alist (cdr alist)) |
| 2494 | (setplist (intern kwd obarray) |
| 2495 | ;; Emacs has an odd bug that causes `mapcan' to fail |
| 2496 | ;; with unintelligible errors. (XEmacs works.) |
| 2497 | ;;(mapcan (lambda (lang-const) |
| 2498 | ;; (list lang-const t)) |
| 2499 | ;; lang-const-list) |
| 2500 | (apply 'nconc (mapcar (lambda (lang-const) |
| 2501 | (list lang-const t)) |
| 2502 | lang-const-list)))) |
| 2503 | obarray)) |
| 2504 | |
| 2505 | (c-lang-defconst c-regular-keywords-regexp |
| 2506 | ;; Adorned regexp matching all keywords that should be fontified |
| 2507 | ;; with the keywords face. I.e. that aren't types or constants. |
| 2508 | t (c-make-keywords-re t |
| 2509 | (set-difference (c-lang-const c-keywords) |
| 2510 | (append (c-lang-const c-primitive-type-kwds) |
| 2511 | (c-lang-const c-constant-kwds)) |
| 2512 | :test 'string-equal))) |
| 2513 | (c-lang-defvar c-regular-keywords-regexp |
| 2514 | (c-lang-const c-regular-keywords-regexp)) |
| 2515 | |
| 2516 | (c-lang-defconst c-primary-expr-regexp |
| 2517 | ;; Regexp matching the start of any primary expression, i.e. any |
| 2518 | ;; literal, symbol, prefix operator, and '('. It doesn't need to |
| 2519 | ;; exclude keywords; they are excluded afterwards unless the second |
| 2520 | ;; submatch matches. If the first but not the second submatch |
| 2521 | ;; matches then it is an ambiguous primary expression; it could also |
| 2522 | ;; be a match of e.g. an infix operator. (The case with ambiguous |
| 2523 | ;; keyword operators isn't handled.) |
| 2524 | |
| 2525 | t (let* ((prefix-ops |
| 2526 | (c-filter-ops (c-lang-const c-operators) |
| 2527 | '(prefix) |
| 2528 | (lambda (op) |
| 2529 | ;; Filter out the special case prefix |
| 2530 | ;; operators that are close parens. |
| 2531 | (not (string-match "\\s)" op))))) |
| 2532 | |
| 2533 | (nonkeyword-prefix-ops |
| 2534 | (c-filter-ops prefix-ops |
| 2535 | t |
| 2536 | "\\`\\(\\s.\\|\\s(\\|\\s)\\)+\\'")) |
| 2537 | |
| 2538 | (in-or-postfix-ops |
| 2539 | (c-filter-ops (c-lang-const c-operators) |
| 2540 | '(postfix |
| 2541 | postfix-if-paren |
| 2542 | left-assoc |
| 2543 | right-assoc |
| 2544 | right-assoc-sequence) |
| 2545 | t)) |
| 2546 | |
| 2547 | (unambiguous-prefix-ops (set-difference nonkeyword-prefix-ops |
| 2548 | in-or-postfix-ops |
| 2549 | :test 'string-equal)) |
| 2550 | (ambiguous-prefix-ops (intersection nonkeyword-prefix-ops |
| 2551 | in-or-postfix-ops |
| 2552 | :test 'string-equal))) |
| 2553 | |
| 2554 | (concat |
| 2555 | "\\(" |
| 2556 | ;; Take out all symbol class operators from `prefix-ops' and make the |
| 2557 | ;; first submatch from them together with `c-primary-expr-kwds'. |
| 2558 | (c-make-keywords-re t |
| 2559 | (append (c-lang-const c-primary-expr-kwds) |
| 2560 | (set-difference prefix-ops nonkeyword-prefix-ops |
| 2561 | :test 'string-equal))) |
| 2562 | |
| 2563 | "\\|" |
| 2564 | ;; Match all ambiguous operators. |
| 2565 | (c-make-keywords-re nil |
| 2566 | (intersection nonkeyword-prefix-ops in-or-postfix-ops |
| 2567 | :test 'string-equal)) |
| 2568 | "\\)" |
| 2569 | |
| 2570 | "\\|" |
| 2571 | ;; Now match all other symbols. |
| 2572 | (c-lang-const c-symbol-start) |
| 2573 | |
| 2574 | "\\|" |
| 2575 | ;; The chars that can start integer and floating point |
| 2576 | ;; constants. |
| 2577 | "\\.?[0-9]" |
| 2578 | |
| 2579 | "\\|" |
| 2580 | ;; The unambiguous operators from `prefix-ops'. |
| 2581 | (c-make-keywords-re nil |
| 2582 | (set-difference nonkeyword-prefix-ops in-or-postfix-ops |
| 2583 | :test 'string-equal)) |
| 2584 | |
| 2585 | "\\|" |
| 2586 | ;; Match string and character literals. |
| 2587 | "\\s\"" |
| 2588 | (if (memq 'gen-string-delim c-emacs-features) |
| 2589 | "\\|\\s|" |
| 2590 | "")))) |
| 2591 | (c-lang-defvar c-primary-expr-regexp (c-lang-const c-primary-expr-regexp)) |
| 2592 | |
| 2593 | \f |
| 2594 | ;;; Additional constants for parser-level constructs. |
| 2595 | |
| 2596 | (c-lang-defconst c-decl-start-colon-kwd-re |
| 2597 | "Regexp matching a keyword that is followed by a colon, where |
| 2598 | the whole construct can precede a declaration. |
| 2599 | E.g. \"public:\" in C++." |
| 2600 | t "\\<\\>" |
| 2601 | c++ (c-make-keywords-re t (c-lang-const c-protection-kwds))) |
| 2602 | (c-lang-defvar c-decl-start-colon-kwd-re |
| 2603 | (c-lang-const c-decl-start-colon-kwd-re)) |
| 2604 | |
| 2605 | (c-lang-defconst c-decl-prefix-re |
| 2606 | "Regexp matching something that might precede a declaration, cast or |
| 2607 | label, such as the last token of a preceding statement or declaration. |
| 2608 | This is used in the common situation where a declaration or cast |
| 2609 | doesn't start with any specific token that can be searched for. |
| 2610 | |
| 2611 | The regexp should not match bob; that is done implicitly. It can't |
| 2612 | require a match longer than one token. The end of the token is taken |
| 2613 | to be at the end of the first submatch, which is assumed to always |
| 2614 | match. It's undefined whether identifier syntax (see |
| 2615 | `c-identifier-syntax-table') is in effect or not. This regexp is |
| 2616 | assumed to be a superset of `c-label-prefix-re' if |
| 2617 | `c-recognize-colon-labels' is set. |
| 2618 | |
| 2619 | Besides this, `c-decl-start-kwds' is used to find declarations. |
| 2620 | |
| 2621 | Note: This variable together with `c-decl-start-re' and |
| 2622 | `c-decl-start-kwds' is only used to detect \"likely\" |
| 2623 | declaration/cast/label starts. I.e. they might produce more matches |
| 2624 | but should not miss anything (or else it's necessary to use text |
| 2625 | properties - see the next note). Wherever they match, the following |
| 2626 | construct is analyzed to see if it indeed is a declaration, cast or |
| 2627 | label. That analysis is not cheap, so it's important that not too |
| 2628 | many false matches are triggered. |
| 2629 | |
| 2630 | Note: If a declaration/cast/label start can't be detected with this |
| 2631 | variable, it's necessary to use the `c-type' text property with the |
| 2632 | value `c-decl-end' on the last char of the last token preceding the |
| 2633 | declaration. See the comment blurb at the start of cc-engine.el for |
| 2634 | more info." |
| 2635 | |
| 2636 | ;; We match a sequence of characters to skip over things like \"};\" |
| 2637 | ;; more quickly. We match ")" in C for K&R region declarations, and |
| 2638 | ;; in all languages except Java for when a cpp macro definition |
| 2639 | ;; begins with a declaration. |
| 2640 | t "\\([\{\}\(\);,]+\\)" |
| 2641 | java "\\([\{\}\(;,<]+\\)" |
| 2642 | ;; Match "<" in C++ to get the first argument in a template arglist. |
| 2643 | ;; In that case there's an additional check in `c-find-decl-spots' |
| 2644 | ;; that it got open paren syntax. Match ":" to aid in picking up |
| 2645 | ;; "public:", etc. This involves additional checks in |
| 2646 | ;; `c-find-decl-prefix-search' to prevent a match of identifiers |
| 2647 | ;; or labels. |
| 2648 | c++ "\\([\{\}\(\);:,<]+\\)" |
| 2649 | ;; Additionally match the protection directives in Objective-C. |
| 2650 | ;; Note that this doesn't cope with the longer directives, which we |
| 2651 | ;; would have to match from start to end since they don't end with |
| 2652 | ;; any easily recognized characters. |
| 2653 | objc (concat "\\([\{\}\(\);,]+\\|" |
| 2654 | (c-make-keywords-re nil (c-lang-const c-protection-kwds)) |
| 2655 | "\\)") |
| 2656 | ;; Pike is like C but we also match "[" for multiple value |
| 2657 | ;; assignments and type casts. |
| 2658 | pike "\\([\{\}\(\)\[;,]+\\)") |
| 2659 | (c-lang-defvar c-decl-prefix-re (c-lang-const c-decl-prefix-re) |
| 2660 | 'dont-doc) |
| 2661 | |
| 2662 | (c-lang-defconst c-decl-start-re |
| 2663 | "Regexp matching the start of any declaration, cast or label. |
| 2664 | It's used on the token after the one `c-decl-prefix-re' matched. This |
| 2665 | regexp should not try to match those constructs accurately as it's |
| 2666 | only used as a sieve to avoid spending more time checking other |
| 2667 | constructs." |
| 2668 | t (c-lang-const c-identifier-start)) |
| 2669 | (c-lang-defvar c-decl-start-re (c-lang-const c-decl-start-re)) |
| 2670 | |
| 2671 | (c-lang-defconst c-decl-prefix-or-start-re |
| 2672 | ;; Regexp matching something that might precede or start a |
| 2673 | ;; declaration, cast or label. |
| 2674 | ;; |
| 2675 | ;; If the first submatch matches, it's taken to match the end of a |
| 2676 | ;; token that might precede such a construct, e.g. ';', '}' or '{'. |
| 2677 | ;; It's built from `c-decl-prefix-re'. |
| 2678 | ;; |
| 2679 | ;; If the first submatch did not match, the match of the whole |
| 2680 | ;; regexp is taken to be at the first token in the declaration. |
| 2681 | ;; `c-decl-start-re' is not checked in this case. |
| 2682 | ;; |
| 2683 | ;; Design note: The reason the same regexp is used to match both |
| 2684 | ;; tokens that precede declarations and start them is to avoid an |
| 2685 | ;; extra regexp search from the previous declaration spot in |
| 2686 | ;; `c-find-decl-spots'. Users of `c-find-decl-spots' also count on |
| 2687 | ;; that it finds all declaration/cast/label starts in approximately |
| 2688 | ;; linear order, so we can't do the searches in two separate passes. |
| 2689 | t (if (c-lang-const c-decl-start-kwds) |
| 2690 | (concat (c-lang-const c-decl-prefix-re) |
| 2691 | "\\|" |
| 2692 | (c-make-keywords-re t (c-lang-const c-decl-start-kwds))) |
| 2693 | (c-lang-const c-decl-prefix-re))) |
| 2694 | (c-lang-defvar c-decl-prefix-or-start-re |
| 2695 | (c-lang-const c-decl-prefix-or-start-re) |
| 2696 | 'dont-doc) |
| 2697 | |
| 2698 | (c-lang-defconst c-cast-parens |
| 2699 | ;; List containing the paren characters that can open a cast, or nil in |
| 2700 | ;; languages without casts. |
| 2701 | t (c-filter-ops (c-lang-const c-operators) |
| 2702 | '(prefix) |
| 2703 | "\\`\\s\(\\'" |
| 2704 | (lambda (op) (elt op 0)))) |
| 2705 | (c-lang-defvar c-cast-parens (c-lang-const c-cast-parens)) |
| 2706 | |
| 2707 | (c-lang-defconst c-block-prefix-disallowed-chars |
| 2708 | "List of syntactically relevant characters that never can occur before |
| 2709 | the open brace in any construct that contains a brace block, e.g. in |
| 2710 | the \"class Foo: public Bar\" part of: |
| 2711 | |
| 2712 | class Foo: public Bar {int x();} a, *b; |
| 2713 | |
| 2714 | If parens can occur, the chars inside those aren't filtered with this |
| 2715 | list. |
| 2716 | |
| 2717 | '<' and '>' should be disallowed even if angle bracket arglists can |
| 2718 | occur. That since the search function needs to stop at them anyway to |
| 2719 | ensure they are given paren syntax. |
| 2720 | |
| 2721 | This is used to skip backward from the open brace to find the region |
| 2722 | in which to look for a construct like \"class\", \"enum\", |
| 2723 | \"namespace\" or whatever. That skipping should be as tight as |
| 2724 | possible for good performance." |
| 2725 | |
| 2726 | ;; Default to all chars that only occurs in nonsymbol tokens outside |
| 2727 | ;; identifiers. |
| 2728 | t (set-difference |
| 2729 | (c-lang-const c-nonsymbol-token-char-list) |
| 2730 | (c-filter-ops (append (c-lang-const c-identifier-ops) |
| 2731 | (list (cons nil |
| 2732 | (c-lang-const c-after-id-concat-ops)))) |
| 2733 | t |
| 2734 | t |
| 2735 | (lambda (op) |
| 2736 | (let ((pos 0) res) |
| 2737 | (while (string-match "\\(\\s.\\|\\s(\\|\\s)\\)" |
| 2738 | op pos) |
| 2739 | (setq res (cons (aref op (match-beginning 1)) res) |
| 2740 | pos (match-end 0))) |
| 2741 | res)))) |
| 2742 | |
| 2743 | ;; Allow cpp operations (where applicable). |
| 2744 | t (if (c-lang-const c-opt-cpp-prefix) |
| 2745 | (set-difference (c-lang-const c-block-prefix-disallowed-chars) |
| 2746 | '(?#)) |
| 2747 | (c-lang-const c-block-prefix-disallowed-chars)) |
| 2748 | |
| 2749 | ;; Allow ':' for inherit list starters. |
| 2750 | (c++ objc idl) (set-difference (c-lang-const c-block-prefix-disallowed-chars) |
| 2751 | '(?:)) |
| 2752 | |
| 2753 | ;; Allow ',' for multiple inherits. |
| 2754 | (c++ java) (set-difference (c-lang-const c-block-prefix-disallowed-chars) |
| 2755 | '(?,)) |
| 2756 | |
| 2757 | ;; Allow parentheses for anonymous inner classes in Java and class |
| 2758 | ;; initializer lists in Pike. |
| 2759 | (java pike) (set-difference (c-lang-const c-block-prefix-disallowed-chars) |
| 2760 | '(?\( ?\))) |
| 2761 | |
| 2762 | ;; Allow '"' for extern clauses (e.g. extern "C" {...}). |
| 2763 | (c c++ objc) (set-difference (c-lang-const c-block-prefix-disallowed-chars) |
| 2764 | '(?\" ?'))) |
| 2765 | |
| 2766 | (c-lang-defconst c-block-prefix-charset |
| 2767 | ;; `c-block-prefix-disallowed-chars' as an inverted charset suitable |
| 2768 | ;; for `c-syntactic-skip-backward'. |
| 2769 | t (c-make-bare-char-alt (c-lang-const c-block-prefix-disallowed-chars) t)) |
| 2770 | (c-lang-defvar c-block-prefix-charset (c-lang-const c-block-prefix-charset)) |
| 2771 | |
| 2772 | (c-lang-defconst c-type-decl-prefix-key |
| 2773 | "Regexp matching the declarator operators that might precede the |
| 2774 | identifier in a declaration, e.g. the \"*\" in \"char *argv\". This |
| 2775 | regexp should match \"(\" if parentheses are valid in declarators. |
| 2776 | The end of the first submatch is taken as the end of the operator. |
| 2777 | Identifier syntax is in effect when this is matched \(see |
| 2778 | `c-identifier-syntax-table')." |
| 2779 | t (if (c-lang-const c-type-modifier-kwds) |
| 2780 | (concat (regexp-opt (c-lang-const c-type-modifier-kwds) t) "\\>") |
| 2781 | ;; Default to a regexp that never matches. |
| 2782 | "\\<\\>") |
| 2783 | ;; Check that there's no "=" afterwards to avoid matching tokens |
| 2784 | ;; like "*=". |
| 2785 | (c objc) (concat "\\(" |
| 2786 | "[*\(]" |
| 2787 | "\\|" |
| 2788 | (c-lang-const c-type-decl-prefix-key) |
| 2789 | "\\)" |
| 2790 | "\\([^=]\\|$\\)") |
| 2791 | c++ (concat "\\(" |
| 2792 | "[*\(&]" |
| 2793 | "\\|" |
| 2794 | (c-lang-const c-type-decl-prefix-key) |
| 2795 | "\\|" |
| 2796 | (concat "\\(" ; 3 |
| 2797 | ;; If this matches there's special treatment in |
| 2798 | ;; `c-font-lock-declarators' and |
| 2799 | ;; `c-font-lock-declarations' that check for a |
| 2800 | ;; complete name followed by ":: *". |
| 2801 | (c-lang-const c-identifier-start) |
| 2802 | "\\)") |
| 2803 | "\\)" |
| 2804 | "\\([^=]\\|$\\)") |
| 2805 | pike "\\(\\*\\)\\([^=]\\|$\\)") |
| 2806 | (c-lang-defvar c-type-decl-prefix-key (c-lang-const c-type-decl-prefix-key) |
| 2807 | 'dont-doc) |
| 2808 | |
| 2809 | (c-lang-defconst c-type-decl-suffix-key |
| 2810 | "Regexp matching the declarator operators that might follow after the |
| 2811 | identifier in a declaration, e.g. the \"[\" in \"char argv[]\". This |
| 2812 | regexp should match \")\" if parentheses are valid in declarators. If |
| 2813 | it matches an open paren of some kind, the type declaration check |
| 2814 | continues at the corresponding close paren, otherwise the end of the |
| 2815 | first submatch is taken as the end of the operator. Identifier syntax |
| 2816 | is in effect when this is matched (see `c-identifier-syntax-table')." |
| 2817 | ;; Default to a regexp that matches `c-type-modifier-kwds' and a |
| 2818 | ;; function argument list parenthesis. |
| 2819 | t (if (c-lang-const c-type-modifier-kwds) |
| 2820 | (concat "\\(\(\\|" |
| 2821 | (regexp-opt (c-lang-const c-type-modifier-kwds) t) "\\>" |
| 2822 | "\\)") |
| 2823 | "\\(\(\\)") |
| 2824 | (c c++ objc) (concat |
| 2825 | "\\(" |
| 2826 | "[\)\[\(]" |
| 2827 | (if (c-lang-const c-type-modifier-kwds) |
| 2828 | (concat |
| 2829 | "\\|" |
| 2830 | ;; "throw" in `c-type-modifier-kwds' is followed |
| 2831 | ;; by a parenthesis list, but no extra measures |
| 2832 | ;; are necessary to handle that. |
| 2833 | (regexp-opt (c-lang-const c-type-modifier-kwds) t) |
| 2834 | "\\>") |
| 2835 | "") |
| 2836 | "\\)") |
| 2837 | java "\\([\[\(\)]\\)" |
| 2838 | idl "\\([\[\(]\\)") |
| 2839 | (c-lang-defvar c-type-decl-suffix-key (c-lang-const c-type-decl-suffix-key) |
| 2840 | 'dont-doc) |
| 2841 | |
| 2842 | (c-lang-defconst c-after-suffixed-type-decl-key |
| 2843 | "This regexp is matched after a declarator expression where |
| 2844 | `c-type-decl-suffix-key' has matched. If it matches then the |
| 2845 | construct is taken as a declaration. It's typically used to match the |
| 2846 | beginning of a function body or whatever might occur after the |
| 2847 | function header in a function declaration or definition. It's |
| 2848 | undefined whether identifier syntax (see `c-identifier-syntax-table') |
| 2849 | is in effect or not. |
| 2850 | |
| 2851 | Note that it's used in cases like after \"foo (bar)\" so it should |
| 2852 | only match when it's certain that it's a declaration, e.g., \"{\" but |
| 2853 | not \",\" or \";\"." |
| 2854 | t "{" |
| 2855 | ;; If K&R style declarations should be recognized then one could |
| 2856 | ;; consider to match the start of any symbol since we want to match |
| 2857 | ;; the start of the first declaration in the "K&R region". That |
| 2858 | ;; could however produce false matches on code like "FOO(bar) x" |
| 2859 | ;; where FOO is a cpp macro, so it's better to leave it out and rely |
| 2860 | ;; on the other heuristics in that case. |
| 2861 | t (if (c-lang-const c-postfix-spec-kwds) |
| 2862 | ;; Add on the keywords in `c-postfix-spec-kwds'. |
| 2863 | (concat (c-lang-const c-after-suffixed-type-decl-key) |
| 2864 | "\\|" |
| 2865 | (c-make-keywords-re t (c-lang-const c-postfix-spec-kwds))) |
| 2866 | (c-lang-const c-after-suffixed-type-decl-key)) |
| 2867 | ;; Also match the colon that starts a base class initializer list in |
| 2868 | ;; C++. That can be confused with a function call before the colon |
| 2869 | ;; in a ? : operator, but we count on that `c-decl-prefix-re' won't |
| 2870 | ;; match before such a thing (as a declaration-level construct; |
| 2871 | ;; matches inside arglist contexts are already excluded). |
| 2872 | c++ "[{:]") |
| 2873 | (c-lang-defvar c-after-suffixed-type-decl-key |
| 2874 | (c-lang-const c-after-suffixed-type-decl-key) |
| 2875 | 'dont-doc) |
| 2876 | |
| 2877 | (c-lang-defconst c-after-suffixed-type-maybe-decl-key |
| 2878 | ;; Regexp that in addition to `c-after-suffixed-type-decl-key' |
| 2879 | ;; matches ";" and ",". |
| 2880 | t (concat "\\(" (c-lang-const c-after-suffixed-type-decl-key) "\\)" |
| 2881 | "\\|[;,]")) |
| 2882 | (c-lang-defvar c-after-suffixed-type-maybe-decl-key |
| 2883 | (c-lang-const c-after-suffixed-type-maybe-decl-key)) |
| 2884 | |
| 2885 | (c-lang-defconst c-opt-type-concat-key |
| 2886 | "Regexp matching operators that concatenate types, e.g. the \"|\" in |
| 2887 | \"int|string\" in Pike. The end of the first submatch is taken as the |
| 2888 | end of the operator. nil in languages without such operators. It's |
| 2889 | undefined whether identifier syntax (see `c-identifier-syntax-table') |
| 2890 | is in effect or not." |
| 2891 | t nil |
| 2892 | pike "\\([|.&]\\)\\($\\|[^|.&]\\)") |
| 2893 | (c-lang-defvar c-opt-type-concat-key (c-lang-const c-opt-type-concat-key) |
| 2894 | 'dont-doc) |
| 2895 | |
| 2896 | (c-lang-defconst c-opt-type-suffix-key |
| 2897 | "Regexp matching operators that might follow after a type, or nil in |
| 2898 | languages that don't have such operators. The end of the first |
| 2899 | submatch is taken as the end of the operator. This should not match |
| 2900 | things like C++ template arglists if `c-recognize-<>-arglists' is set. |
| 2901 | It's undefined whether identifier syntax (see `c-identifier-syntax-table') |
| 2902 | is in effect or not." |
| 2903 | t nil |
| 2904 | (c c++ objc pike) "\\(\\.\\.\\.\\)" |
| 2905 | java (concat "\\(\\[" (c-lang-const c-simple-ws) "*\\]\\|\\.\\.\\.\\)")) |
| 2906 | (c-lang-defvar c-opt-type-suffix-key (c-lang-const c-opt-type-suffix-key)) |
| 2907 | |
| 2908 | (c-lang-defvar c-known-type-key |
| 2909 | ;; Regexp matching the known type identifiers. This is initialized |
| 2910 | ;; from the type keywords and `*-font-lock-extra-types'. The first |
| 2911 | ;; submatch is the one that matches the type. Note that this regexp |
| 2912 | ;; assumes that symbol constituents like '_' and '$' have word |
| 2913 | ;; syntax. |
| 2914 | (let* ((extra-types |
| 2915 | (when (boundp (c-mode-symbol "font-lock-extra-types")) |
| 2916 | (c-mode-var "font-lock-extra-types"))) |
| 2917 | (regexp-strings |
| 2918 | (apply 'nconc |
| 2919 | (mapcar (lambda (re) |
| 2920 | (when (string-match "[][.*+?^$\\]" re) |
| 2921 | (list re))) |
| 2922 | extra-types))) |
| 2923 | (plain-strings |
| 2924 | (apply 'nconc |
| 2925 | (mapcar (lambda (re) |
| 2926 | (unless (string-match "[][.*+?^$\\]" re) |
| 2927 | (list re))) |
| 2928 | extra-types)))) |
| 2929 | (concat "\\<\\(" |
| 2930 | (c-concat-separated |
| 2931 | (append (list (c-make-keywords-re nil |
| 2932 | (append (c-lang-const c-primitive-type-kwds) |
| 2933 | plain-strings))) |
| 2934 | regexp-strings) |
| 2935 | "\\|") |
| 2936 | "\\)\\>"))) |
| 2937 | |
| 2938 | (c-lang-defconst c-special-brace-lists |
| 2939 | "List of open- and close-chars that makes up a pike-style brace list, |
| 2940 | i.e. for a ([ ]) list there should be a cons (?\\[ . ?\\]) in this |
| 2941 | list." |
| 2942 | t nil |
| 2943 | pike '((?{ . ?}) (?\[ . ?\]) (?< . ?>))) |
| 2944 | (c-lang-defvar c-special-brace-lists (c-lang-const c-special-brace-lists)) |
| 2945 | |
| 2946 | (c-lang-defconst c-recognize-knr-p |
| 2947 | "Non-nil means K&R style argument declarations are valid." |
| 2948 | t nil |
| 2949 | c t) |
| 2950 | (c-lang-defvar c-recognize-knr-p (c-lang-const c-recognize-knr-p)) |
| 2951 | |
| 2952 | (c-lang-defconst c-recognize-typeless-decls |
| 2953 | "Non-nil means function declarations without return type should be |
| 2954 | recognized. That can introduce an ambiguity with parenthesized macro |
| 2955 | calls before a brace block. This setting does not affect declarations |
| 2956 | that are preceded by a declaration starting keyword, so |
| 2957 | e.g. `c-typeless-decl-kwds' may still be used when it's set to nil." |
| 2958 | t nil |
| 2959 | (c c++ objc java) t) |
| 2960 | (c-lang-defvar c-recognize-typeless-decls |
| 2961 | (c-lang-const c-recognize-typeless-decls)) |
| 2962 | |
| 2963 | (c-lang-defconst c-recognize-<>-arglists |
| 2964 | "Non-nil means C++ style template arglists should be handled. More |
| 2965 | specifically, this means a comma separated list of types or |
| 2966 | expressions surrounded by \"<\" and \">\". It's always preceded by an |
| 2967 | identifier or one of the keywords on `c-<>-type-kwds' or |
| 2968 | `c-<>-arglist-kwds'. If there's an identifier before then the whole |
| 2969 | expression is considered to be a type." |
| 2970 | t (or (consp (c-lang-const c-<>-type-kwds)) |
| 2971 | (consp (c-lang-const c-<>-arglist-kwds))) |
| 2972 | java t) |
| 2973 | (c-lang-defvar c-recognize-<>-arglists (c-lang-const c-recognize-<>-arglists)) |
| 2974 | |
| 2975 | (c-lang-defconst c-enums-contain-decls |
| 2976 | "Non-nil means that an enum structure can contain declarations." |
| 2977 | t nil |
| 2978 | java t) |
| 2979 | (c-lang-defvar c-enums-contain-decls (c-lang-const c-enums-contain-decls)) |
| 2980 | |
| 2981 | (c-lang-defconst c-recognize-paren-inits |
| 2982 | "Non-nil means that parenthesis style initializers exist, |
| 2983 | i.e. constructs like |
| 2984 | |
| 2985 | Foo bar (gnu); |
| 2986 | |
| 2987 | in addition to the more classic |
| 2988 | |
| 2989 | Foo bar = gnu;" |
| 2990 | t nil |
| 2991 | c++ t) |
| 2992 | (c-lang-defvar c-recognize-paren-inits (c-lang-const c-recognize-paren-inits)) |
| 2993 | |
| 2994 | (c-lang-defconst c-recognize-paren-inexpr-blocks |
| 2995 | "Non-nil to recognize gcc style in-expression blocks, |
| 2996 | i.e. compound statements surrounded by parentheses inside expressions." |
| 2997 | t nil |
| 2998 | (c c++) t) |
| 2999 | (c-lang-defvar c-recognize-paren-inexpr-blocks |
| 3000 | (c-lang-const c-recognize-paren-inexpr-blocks)) |
| 3001 | |
| 3002 | (c-lang-defconst c-opt-<>-arglist-start |
| 3003 | ;; Regexp matching the start of angle bracket arglists in languages |
| 3004 | ;; where `c-recognize-<>-arglists' is set. Does not exclude |
| 3005 | ;; keywords outside `c-<>-arglist-kwds'. The first submatch is |
| 3006 | ;; assumed to surround the preceding symbol. The whole match is |
| 3007 | ;; assumed to end directly after the opening "<". |
| 3008 | t (if (c-lang-const c-recognize-<>-arglists) |
| 3009 | (concat "\\(" |
| 3010 | (c-lang-const c-symbol-key) |
| 3011 | "\\)" |
| 3012 | (c-lang-const c-syntactic-ws) |
| 3013 | "<"))) |
| 3014 | (c-lang-defvar c-opt-<>-arglist-start (c-lang-const c-opt-<>-arglist-start)) |
| 3015 | |
| 3016 | (c-lang-defconst c-opt-<>-arglist-start-in-paren |
| 3017 | ;; Regexp that in addition to `c-opt-<>-arglist-start' matches close |
| 3018 | ;; parens. The first submatch is assumed to surround |
| 3019 | ;; `c-opt-<>-arglist-start'. |
| 3020 | t (if (c-lang-const c-opt-<>-arglist-start) |
| 3021 | (concat "\\(" |
| 3022 | (c-lang-const c-opt-<>-arglist-start) |
| 3023 | "\\)\\|\\s\)"))) |
| 3024 | (c-lang-defvar c-opt-<>-arglist-start-in-paren |
| 3025 | (c-lang-const c-opt-<>-arglist-start-in-paren)) |
| 3026 | |
| 3027 | (c-lang-defconst c-opt-postfix-decl-spec-key |
| 3028 | ;; Regexp matching the beginning of a declaration specifier in the |
| 3029 | ;; region between the header and the body of a declaration. |
| 3030 | ;; |
| 3031 | ;; TODO: This is currently not used uniformly; c++-mode and |
| 3032 | ;; java-mode each have their own ways of using it. |
| 3033 | t nil |
| 3034 | c++ (concat ":?" |
| 3035 | (c-lang-const c-simple-ws) "*" |
| 3036 | "\\(virtual" (c-lang-const c-simple-ws) "+\\)?\\(" |
| 3037 | (c-make-keywords-re nil (c-lang-const c-protection-kwds)) |
| 3038 | "\\)" (c-lang-const c-simple-ws) "+" |
| 3039 | "\\(" (c-lang-const c-symbol-key) "\\)") |
| 3040 | java (c-make-keywords-re t (c-lang-const c-postfix-spec-kwds))) |
| 3041 | (c-lang-defvar c-opt-postfix-decl-spec-key |
| 3042 | (c-lang-const c-opt-postfix-decl-spec-key)) |
| 3043 | |
| 3044 | (c-lang-defconst c-recognize-colon-labels |
| 3045 | "Non-nil if generic labels ending with \":\" should be recognized. |
| 3046 | That includes labels in code and access keys in classes. This does |
| 3047 | not apply to labels recognized by `c-label-kwds' and |
| 3048 | `c-opt-extra-label-key'." |
| 3049 | t nil |
| 3050 | (c c++ objc java pike) t) |
| 3051 | (c-lang-defvar c-recognize-colon-labels |
| 3052 | (c-lang-const c-recognize-colon-labels)) |
| 3053 | |
| 3054 | (c-lang-defconst c-label-prefix-re |
| 3055 | "Regexp like `c-decl-prefix-re' that matches any token that can precede |
| 3056 | a generic colon label. Not used if `c-recognize-colon-labels' is |
| 3057 | nil." |
| 3058 | t "\\([{};]+\\)") |
| 3059 | (c-lang-defvar c-label-prefix-re |
| 3060 | (c-lang-const c-label-prefix-re)) |
| 3061 | |
| 3062 | (c-lang-defconst c-nonlabel-token-key |
| 3063 | "Regexp matching things that can't occur in generic colon labels, |
| 3064 | neither in a statement nor in a declaration context. The regexp is |
| 3065 | tested at the beginning of every sexp in a suspected label, |
| 3066 | i.e. before \":\". Only used if `c-recognize-colon-labels' is set." |
| 3067 | t (concat |
| 3068 | ;; All keywords except `c-label-kwds' and `c-protection-kwds'. |
| 3069 | (c-make-keywords-re t |
| 3070 | (set-difference (c-lang-const c-keywords) |
| 3071 | (append (c-lang-const c-label-kwds) |
| 3072 | (c-lang-const c-protection-kwds)) |
| 3073 | :test 'string-equal))) |
| 3074 | ;; Don't allow string literals, except in AWK. Character constants are OK. |
| 3075 | (c objc java pike idl) (concat "\"\\|" |
| 3076 | (c-lang-const c-nonlabel-token-key)) |
| 3077 | ;; Also check for open parens in C++, to catch member init lists in |
| 3078 | ;; constructors. We normally allow it so that macros with arguments |
| 3079 | ;; work in labels. |
| 3080 | c++ (concat "\\s\(\\|\"\\|" (c-lang-const c-nonlabel-token-key))) |
| 3081 | (c-lang-defvar c-nonlabel-token-key (c-lang-const c-nonlabel-token-key)) |
| 3082 | |
| 3083 | (c-lang-defconst c-nonlabel-token-2-key |
| 3084 | "Regexp matching things that can't occur two symbols before a colon in |
| 3085 | a label construct. This catches C++'s inheritance construct \"class foo |
| 3086 | : bar\". Only used if `c-recognize-colon-labels' is set." |
| 3087 | t "\\<\\>" ; matches nothing |
| 3088 | c++ (c-make-keywords-re t '("class"))) |
| 3089 | (c-lang-defvar c-nonlabel-token-2-key (c-lang-const c-nonlabel-token-2-key)) |
| 3090 | |
| 3091 | (c-lang-defconst c-opt-extra-label-key |
| 3092 | "Optional regexp matching labels. |
| 3093 | Normally, labels are detected according to `c-nonlabel-token-key', |
| 3094 | `c-decl-prefix-re' and `c-nonlabel-decl-prefix-re'. This regexp can |
| 3095 | be used if there are additional labels that aren't recognized that |
| 3096 | way." |
| 3097 | t nil |
| 3098 | objc (c-make-keywords-re t (c-lang-const c-protection-kwds))) |
| 3099 | (c-lang-defvar c-opt-extra-label-key (c-lang-const c-opt-extra-label-key)) |
| 3100 | |
| 3101 | (c-lang-defconst c-opt-friend-key |
| 3102 | ;; Regexp describing friend declarations classes, or nil in |
| 3103 | ;; languages that don't have such things. |
| 3104 | ;; |
| 3105 | ;; TODO: Ought to use `c-prefix-spec-kwds-re' or similar, and the |
| 3106 | ;; template skipping isn't done properly. This will disappear soon. |
| 3107 | t nil |
| 3108 | c++ (concat "friend" (c-lang-const c-simple-ws) "+" |
| 3109 | "\\|" |
| 3110 | (concat "template" |
| 3111 | (c-lang-const c-simple-ws) "*" |
| 3112 | "<.+>" |
| 3113 | (c-lang-const c-simple-ws) "*" |
| 3114 | "friend" |
| 3115 | (c-lang-const c-simple-ws) "+"))) |
| 3116 | (c-lang-defvar c-opt-friend-key (c-lang-const c-opt-friend-key)) |
| 3117 | |
| 3118 | (c-lang-defconst c-opt-method-key |
| 3119 | ;; Special regexp to match the start of Objective-C methods. The |
| 3120 | ;; first submatch is assumed to end after the + or - key. |
| 3121 | t nil |
| 3122 | objc (concat |
| 3123 | ;; TODO: Ought to use a better method than anchoring on bol. |
| 3124 | "^\\s *" |
| 3125 | "\\([+-]\\)" |
| 3126 | (c-lang-const c-simple-ws) "*" |
| 3127 | (concat "\\(" ; Return type. |
| 3128 | "([^\)]*)" |
| 3129 | (c-lang-const c-simple-ws) "*" |
| 3130 | "\\)?") |
| 3131 | "\\(" (c-lang-const c-symbol-key) "\\)")) |
| 3132 | (c-lang-defvar c-opt-method-key (c-lang-const c-opt-method-key)) |
| 3133 | |
| 3134 | (c-lang-defconst c-type-decl-end-used |
| 3135 | ;; Must be set in buffers where the `c-type' text property might be |
| 3136 | ;; used with the value `c-decl-end'. |
| 3137 | ;; |
| 3138 | ;; `c-decl-end' is used to mark the ends of labels and access keys |
| 3139 | ;; to make interactive refontification work better. |
| 3140 | t (or (c-lang-const c-recognize-colon-labels) |
| 3141 | (and (c-lang-const c-label-kwds) t)) |
| 3142 | ;; `c-decl-end' is used to mark the end of the @-style directives in |
| 3143 | ;; Objective-C. |
| 3144 | objc t) |
| 3145 | (c-lang-defvar c-type-decl-end-used (c-lang-const c-type-decl-end-used)) |
| 3146 | |
| 3147 | \f |
| 3148 | ;;; Wrap up the `c-lang-defvar' system. |
| 3149 | |
| 3150 | ;; Compile in the list of language variables that has been collected |
| 3151 | ;; with the `c-lang-defvar' and `c-lang-setvar' macros. Note that the |
| 3152 | ;; first element of each is nil. |
| 3153 | (defconst c-lang-variable-inits (cc-eval-when-compile c-lang-variable-inits)) |
| 3154 | (defconst c-emacs-variable-inits (cc-eval-when-compile c-emacs-variable-inits)) |
| 3155 | |
| 3156 | ;; Make the `c-lang-setvar' variables buffer local in the current buffer. |
| 3157 | ;; These are typically standard emacs variables such as `comment-start'. |
| 3158 | (defmacro c-make-emacs-variables-local () |
| 3159 | `(progn |
| 3160 | ,@(mapcar (lambda (init) |
| 3161 | `(make-local-variable ',(car init))) |
| 3162 | (cdr c-emacs-variable-inits)))) |
| 3163 | |
| 3164 | (defun c-make-init-lang-vars-fun (mode) |
| 3165 | "Create a function that initializes all the language dependent variables |
| 3166 | for the given mode. |
| 3167 | |
| 3168 | This function should be evaluated at compile time, so that the |
| 3169 | function it returns is byte compiled with all the evaluated results |
| 3170 | from the language constants. Use the `c-init-language-vars' macro to |
| 3171 | accomplish that conveniently." |
| 3172 | |
| 3173 | (if (and (not load-in-progress) |
| 3174 | (boundp 'byte-compile-dest-file) |
| 3175 | (stringp byte-compile-dest-file)) |
| 3176 | |
| 3177 | ;; No need to byte compile this lambda since the byte compiler is |
| 3178 | ;; smart enough to detect the `funcall' construct in the |
| 3179 | ;; `c-init-language-vars' macro below and compile it all straight |
| 3180 | ;; into the function that contains `c-init-language-vars'. |
| 3181 | `(lambda () |
| 3182 | |
| 3183 | ;; This let sets up the context for `c-mode-var' and similar |
| 3184 | ;; that could be in the result from `cl-macroexpand-all'. |
| 3185 | (let ((c-buffer-is-cc-mode ',mode) |
| 3186 | current-var source-eval) |
| 3187 | (c-make-emacs-variables-local) |
| 3188 | (condition-case err |
| 3189 | |
| 3190 | (if (eq c-version-sym ',c-version-sym) |
| 3191 | (setq ,@(let ((c-buffer-is-cc-mode mode) |
| 3192 | (c-lang-const-expansion 'immediate)) |
| 3193 | ;; `c-lang-const' will expand to the evaluated |
| 3194 | ;; constant immediately in `cl-macroexpand-all' |
| 3195 | ;; below. |
| 3196 | (mapcan |
| 3197 | (lambda (init) |
| 3198 | `(current-var ',(car init) |
| 3199 | ,(car init) ,(cl-macroexpand-all |
| 3200 | (elt init 1)))) |
| 3201 | ;; Note: The following `append' copies the |
| 3202 | ;; first argument. That list is small, so |
| 3203 | ;; this doesn't matter too much. |
| 3204 | (append (cdr c-emacs-variable-inits) |
| 3205 | (cdr c-lang-variable-inits))))) |
| 3206 | |
| 3207 | ;; This diagnostic message isn't useful for end |
| 3208 | ;; users, so it's disabled. |
| 3209 | ;;(unless (get ',mode 'c-has-warned-lang-consts) |
| 3210 | ;; (message ,(concat "%s compiled with CC Mode %s " |
| 3211 | ;; "but loaded with %s - evaluating " |
| 3212 | ;; "language constants from source") |
| 3213 | ;; ',mode ,c-version c-version) |
| 3214 | ;; (put ',mode 'c-has-warned-lang-consts t)) |
| 3215 | |
| 3216 | (setq source-eval t) |
| 3217 | (let ((init ',(append (cdr c-emacs-variable-inits) |
| 3218 | (cdr c-lang-variable-inits)))) |
| 3219 | (while init |
| 3220 | (setq current-var (caar init)) |
| 3221 | (set (caar init) (eval (cadar init))) |
| 3222 | (setq init (cdr init))))) |
| 3223 | |
| 3224 | (error |
| 3225 | (if current-var |
| 3226 | (message "Eval error in the `c-lang-defvar' or `c-lang-setvar' for `%s'%s: %S" |
| 3227 | current-var |
| 3228 | (if source-eval |
| 3229 | (format "\ |
| 3230 | (fallback source eval - %s compiled with CC Mode %s but loaded with %s)" |
| 3231 | ',mode ,c-version c-version) |
| 3232 | "") |
| 3233 | err) |
| 3234 | (signal (car err) (cdr err))))))) |
| 3235 | |
| 3236 | ;; Being evaluated from source. Always use the dynamic method to |
| 3237 | ;; work well when `c-lang-defvar's in this file are reevaluated |
| 3238 | ;; interactively. |
| 3239 | `(lambda () |
| 3240 | (require 'cc-langs) |
| 3241 | (let ((c-buffer-is-cc-mode ',mode) |
| 3242 | (init (append (cdr c-emacs-variable-inits) |
| 3243 | (cdr c-lang-variable-inits))) |
| 3244 | current-var) |
| 3245 | (c-make-emacs-variables-local) |
| 3246 | (condition-case err |
| 3247 | |
| 3248 | (while init |
| 3249 | (setq current-var (caar init)) |
| 3250 | (set (caar init) (eval (cadar init))) |
| 3251 | (setq init (cdr init))) |
| 3252 | |
| 3253 | (error |
| 3254 | (if current-var |
| 3255 | (message |
| 3256 | "Eval error in the `c-lang-defvar' or `c-lang-setver' for `%s' (source eval): %S" |
| 3257 | current-var err) |
| 3258 | (signal (car err) (cdr err))))))) |
| 3259 | )) |
| 3260 | |
| 3261 | (defmacro c-init-language-vars (mode) |
| 3262 | "Initialize all the language dependent variables for the given mode. |
| 3263 | This macro is expanded at compile time to a form tailored for the mode |
| 3264 | in question, so MODE must be a constant. Therefore MODE is not |
| 3265 | evaluated and should not be quoted." |
| 3266 | `(funcall ,(c-make-init-lang-vars-fun mode))) |
| 3267 | |
| 3268 | \f |
| 3269 | (cc-provide 'cc-langs) |
| 3270 | |
| 3271 | ;;; cc-langs.el ends here |