├── README.md ├── crystal-flycheck.el ├── LICENSE └── crystal-mode.el /README.md: -------------------------------------------------------------------------------- 1 | # emacs-crystal-mode 2 | A minimal crystal mode for emacs, based on ruby-mode (of course) 3 | -------------------------------------------------------------------------------- /crystal-flycheck.el: -------------------------------------------------------------------------------- 1 | (flycheck-define-checker crystal-build 2 | "A Crystal syntax checker using crystal build" 3 | :command ("crystal" 4 | "build" 5 | "--no-build" 6 | "--no-color" 7 | source-inplace) 8 | :error-patterns 9 | ((error line-start "Error in " (file-name) ":" line ":" (message) line-end) 10 | (error line-start "Syntax error in " (file-name) ":" line ":" (message) line-end) 11 | (warning line-start "Warning in " (file-name) ":" line ":" (message) line-end) 12 | ) 13 | :modes crystal-mode 14 | ) 15 | 16 | (add-to-list 'flycheck-checkers 'crystal-build) 17 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | 676 | -------------------------------------------------------------------------------- /crystal-mode.el: -------------------------------------------------------------------------------- 1 | ;;; crystal-mode.el --- Major mode for editing Ruby files 2 | 3 | ;; Copyright (C) 2015 Jason Pellerin 4 | ;; Authors: Jason Pellerin 5 | ;; URL: https://github.com/jpellerin/emacs-crystal-mode 6 | ;; Created: Tue Jun 23 2015 7 | ;; Keywords: languages crystal 8 | ;; Version 0.1 9 | 10 | 11 | ;; Based on on ruby-mode.el 12 | 13 | ;; Copyright (C) 1994-2015 Free Software Foundation, Inc. 14 | 15 | ;; Authors: Yukihiro Matsumoto 16 | ;; Nobuyoshi Nakada 17 | ;; URL: http://www.emacswiki.org/cgi-bin/wiki/RubyMode 18 | ;; Created: Fri Feb 4 14:49:13 JST 1994 19 | ;; Keywords: languages ruby 20 | ;; Version: 1.2 21 | 22 | ;; This file is part of GNU Emacs. 23 | 24 | ;; GNU Emacs is free software: you can redistribute it and/or modify 25 | ;; it under the terms of the GNU General Public License as published by 26 | ;; the Free Software Foundation, either version 3 of the License, or 27 | ;; (at your option) any later version. 28 | 29 | ;; GNU Emacs is distributed in the hope that it will be useful, 30 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of 31 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 32 | ;; GNU General Public License for more details. 33 | 34 | ;; You should have received a copy of the GNU General Public License 35 | ;; along with GNU Emacs. If not, see . 36 | 37 | ;;; Commentary: 38 | 39 | ;; Provides font-locking, indentation support, and navigation for Crystal code. 40 | ;; 41 | ;; If you're installing manually, you should add this to your .emacs 42 | ;; file after putting it on your load path: 43 | ;; 44 | ;; (autoload 'crystal-mode "crystal-mode" "Major mode for crystal files" t) 45 | ;; (add-to-list 'auto-mode-alist '("\\.cr$" . crystal-mode)) 46 | ;; (add-to-list 'interpreter-mode-alist '("crystal" . crystal-mode)) 47 | ;; 48 | ;; Still needs more docstrings; search below for TODO. 49 | 50 | ;;; Code: 51 | 52 | (defgroup crystal nil 53 | "Major mode for editing Crystal code." 54 | :prefix "crystal-" 55 | :group 'languages) 56 | 57 | (defconst crystal-block-beg-keywords 58 | '("class" "module" "def" "if" "unless" "case" "while" "until" "for" "begin" "do" "macro") 59 | "Keywords at the beginning of blocks.") 60 | 61 | (defconst crystal-block-beg-re 62 | (regexp-opt crystal-block-beg-keywords) 63 | "Regexp to match the beginning of blocks.") 64 | 65 | (defconst crystal-non-block-do-re 66 | (regexp-opt '("while" "until" "rescue") 'symbols) 67 | "Regexp to match keywords that nest without blocks.") 68 | 69 | (defconst crystal-indent-beg-re 70 | (concat "^\\(\\s *" (regexp-opt '("class" "module" "def" "macro")) "\\|" 71 | (regexp-opt '("if" "unless" "case" "while" "until" "for" "begin")) 72 | "\\)\\_>") 73 | "Regexp to match where the indentation gets deeper.") 74 | 75 | (defconst crystal-modifier-beg-keywords 76 | '("if" "unless" "while" "until") 77 | "Modifiers that are the same as the beginning of blocks.") 78 | 79 | (defconst crystal-modifier-beg-re 80 | (regexp-opt crystal-modifier-beg-keywords) 81 | "Regexp to match modifiers same as the beginning of blocks.") 82 | 83 | (defconst crystal-modifier-re 84 | (regexp-opt (cons "rescue" crystal-modifier-beg-keywords)) 85 | "Regexp to match modifiers.") 86 | 87 | (defconst crystal-block-mid-keywords 88 | '("then" "else" "elsif" "when" "rescue" "ensure") 89 | "Keywords where the indentation gets shallower in middle of block statements.") 90 | 91 | (defconst crystal-block-mid-re 92 | (regexp-opt crystal-block-mid-keywords) 93 | "Regexp to match where the indentation gets shallower in middle of block statements.") 94 | 95 | (defconst crystal-block-op-keywords 96 | '("and" "or" "not") 97 | "Regexp to match boolean keywords.") 98 | 99 | (defconst crystal-block-hanging-re 100 | (regexp-opt (append crystal-modifier-beg-keywords crystal-block-op-keywords)) 101 | "Regexp to match hanging block modifiers.") 102 | 103 | (defconst crystal-block-end-re "\\_") 104 | 105 | (defconst crystal-defun-beg-re 106 | '"\\(def\\|class\\|module\\|macro\\)" 107 | "Regexp to match the beginning of a defun, in the general sense.") 108 | 109 | (defconst crystal-singleton-class-re 110 | "class\\s *<<" 111 | "Regexp to match the beginning of a singleton class context.") 112 | 113 | (eval-and-compile 114 | (defconst crystal-here-doc-beg-re 115 | "\\(<\\)<\\(-\\)?\\(\\([a-zA-Z0-9_]+\\)\\|[\"]\\([^\"]+\\)[\"]\\|[']\\([^']+\\)[']\\)" 116 | "Regexp to match the beginning of a heredoc.") 117 | 118 | (defconst crystal-expression-expansion-re 119 | "\\(?:[^\\]\\|\\=\\)\\(\\\\\\\\\\)*\\(#\\({[^}\n\\\\]*\\(\\\\.[^}\n\\\\]*\\)*}\\|\\(\\$\\|@\\|@@\\)\\(\\w\\|_\\)+\\|\\$[^a-zA-Z \n]\\)\\)")) 120 | 121 | 122 | (defun crystal-here-doc-end-match () 123 | "Return a regexp to find the end of a heredoc. 124 | 125 | This should only be called after matching against `crystal-here-doc-beg-re'." 126 | (concat "^" 127 | (if (match-string 2) "[ \t]*" nil) 128 | (regexp-quote 129 | (or (match-string 4) 130 | (match-string 5) 131 | (match-string 6))))) 132 | 133 | (defconst crystal-delimiter 134 | (concat "[?$/%(){}#\"'`.:]\\|<<\\|\\[\\|\\]\\|\\_<\\|\\<\\(" 135 | crystal-block-beg-re 136 | "\\)\\_>\\|" crystal-block-end-re 137 | "\\|^=begin\\|" crystal-here-doc-beg-re)) 138 | 139 | (defconst crystal-negative 140 | (concat "^[ \t]*\\(\\(" crystal-block-mid-re "\\)\\>\\|" 141 | crystal-block-end-re "\\|}\\|\\]\\)") 142 | "Regexp to match where the indentation gets shallower.") 143 | 144 | (defconst crystal-operator-re "[-,.+*/%&|^~=<>:]\\|\\\\$" 145 | "Regexp to match operators.") 146 | 147 | (defconst crystal-symbol-chars "a-zA-Z0-9_" 148 | "List of characters that symbol names may contain.") 149 | 150 | (defconst crystal-symbol-re (concat "[" crystal-symbol-chars "]") 151 | "Regexp to match symbols.") 152 | 153 | (defvar crystal-use-smie t) 154 | 155 | (defvar crystal-mode-map 156 | (let ((map (make-sparse-keymap))) 157 | (unless crystal-use-smie 158 | (define-key map (kbd "M-C-b") 'crystal-backward-sexp) 159 | (define-key map (kbd "M-C-f") 'crystal-forward-sexp) 160 | (define-key map (kbd "M-C-q") 'crystal-indent-exp)) 161 | (when crystal-use-smie 162 | (define-key map (kbd "M-C-d") 'smie-down-list)) 163 | (define-key map (kbd "M-C-p") 'crystal-beginning-of-block) 164 | (define-key map (kbd "M-C-n") 'crystal-end-of-block) 165 | (define-key map (kbd "C-c {") 'crystal-toggle-block) 166 | (define-key map (kbd "C-c '") 'crystal-toggle-string-quotes) 167 | map) 168 | "Keymap used in Crystal mode.") 169 | 170 | (easy-menu-define 171 | crystal-mode-menu 172 | crystal-mode-map 173 | "Crystal Mode Menu" 174 | '("Crystal" 175 | ["Beginning of Block" crystal-beginning-of-block t] 176 | ["End of Block" crystal-end-of-block t] 177 | ["Toggle Block" crystal-toggle-block t] 178 | "--" 179 | ["Toggle String Quotes" crystal-toggle-string-quotes t] 180 | "--" 181 | ["Backward Sexp" crystal-backward-sexp 182 | :visible (not crystal-use-smie)] 183 | ["Backward Sexp" backward-sexp 184 | :visible crystal-use-smie] 185 | ["Forward Sexp" crystal-forward-sexp 186 | :visible (not crystal-use-smie)] 187 | ["Forward Sexp" forward-sexp 188 | :visible crystal-use-smie] 189 | ["Indent Sexp" crystal-indent-exp 190 | :visible (not crystal-use-smie)] 191 | ["Indent Sexp" prog-indent-sexp 192 | :visible crystal-use-smie])) 193 | 194 | (defvar crystal-mode-syntax-table 195 | (let ((table (make-syntax-table))) 196 | (modify-syntax-entry ?\' "\"" table) 197 | (modify-syntax-entry ?\" "\"" table) 198 | (modify-syntax-entry ?\` "\"" table) 199 | (modify-syntax-entry ?# "<" table) 200 | (modify-syntax-entry ?\n ">" table) 201 | (modify-syntax-entry ?\\ "\\" table) 202 | (modify-syntax-entry ?$ "." table) 203 | (modify-syntax-entry ?_ "_" table) 204 | (modify-syntax-entry ?: "_" table) 205 | (modify-syntax-entry ?< "." table) 206 | (modify-syntax-entry ?> "." table) 207 | (modify-syntax-entry ?& "." table) 208 | (modify-syntax-entry ?| "." table) 209 | (modify-syntax-entry ?% "." table) 210 | (modify-syntax-entry ?= "." table) 211 | (modify-syntax-entry ?/ "." table) 212 | (modify-syntax-entry ?+ "." table) 213 | (modify-syntax-entry ?* "." table) 214 | (modify-syntax-entry ?- "." table) 215 | (modify-syntax-entry ?\; "." table) 216 | (modify-syntax-entry ?\( "()" table) 217 | (modify-syntax-entry ?\) ")(" table) 218 | (modify-syntax-entry ?\{ "(}" table) 219 | (modify-syntax-entry ?\} "){" table) 220 | (modify-syntax-entry ?\[ "(]" table) 221 | (modify-syntax-entry ?\] ")[" table) 222 | table) 223 | "Syntax table to use in Crystal mode.") 224 | 225 | (defcustom crystal-indent-tabs-mode nil 226 | "Indentation can insert tabs in Crystal mode if this is non-nil." 227 | :type 'boolean 228 | :group 'crystal 229 | :safe 'booleanp) 230 | 231 | (defcustom crystal-indent-level 2 232 | "Indentation of Crystal statements." 233 | :type 'integer 234 | :group 'crystal 235 | :safe 'integerp) 236 | 237 | (defcustom crystal-comment-column (default-value 'comment-column) 238 | "Indentation column of comments." 239 | :type 'integer 240 | :group 'crystal 241 | :safe 'integerp) 242 | 243 | (defconst crystal-alignable-keywords '(if while unless until begin case for def macro) 244 | "Keywords that can be used in `crystal-align-to-stmt-keywords'.") 245 | 246 | (defcustom crystal-align-to-stmt-keywords '(def) 247 | "Keywords after which we align the expression body to statement. 248 | 249 | When nil, an expression that begins with one these keywords is 250 | indented to the column of the keyword. Example: 251 | 252 | tee = if foo 253 | bar 254 | else 255 | qux 256 | end 257 | 258 | If this value is t or contains a symbol with the name of given 259 | keyword, the expression is indented to align to the beginning of 260 | the statement: 261 | 262 | tee = if foo 263 | bar 264 | else 265 | qux 266 | end 267 | 268 | Only has effect when `crystal-use-smie' is t. 269 | " 270 | :type `(choice 271 | (const :tag "None" nil) 272 | (const :tag "All" t) 273 | (repeat :tag "User defined" 274 | (choice ,@(mapcar 275 | (lambda (kw) (list 'const kw)) 276 | crystal-alignable-keywords)))) 277 | :group 'crystal 278 | :safe 'listp 279 | :version "24.4") 280 | 281 | (defcustom crystal-align-chained-calls nil 282 | "If non-nil, align chained method calls. 283 | 284 | 285 | Each method call on a separate line will be aligned to the column 286 | of its parent. 287 | 288 | Only has effect when `crystal-use-smie' is t." 289 | :type 'boolean 290 | :group 'crystal 291 | :safe 'booleanp 292 | :version "24.4") 293 | 294 | (defcustom crystal-deep-arglist t 295 | "Deep indent lists in parenthesis when non-nil. 296 | Also ignores spaces after parenthesis when `space'. 297 | Only has effect when `crystal-use-smie' is nil." 298 | :type 'boolean 299 | :group 'crystal 300 | :safe 'booleanp) 301 | 302 | ;; FIXME Woefully under documented. What is the point of the last `t'?. 303 | (defcustom crystal-deep-indent-paren '(?\( ?\[ ?\] t) 304 | "Deep indent lists in parenthesis when non-nil. 305 | The value t means continuous line. 306 | Also ignores spaces after parenthesis when `space'. 307 | Only has effect when `crystal-use-smie' is nil." 308 | :type '(choice (const nil) 309 | character 310 | (repeat (choice character 311 | (cons character (choice (const nil) 312 | (const t))) 313 | (const t) ; why? 314 | ))) 315 | :group 'crystal) 316 | 317 | (defcustom crystal-deep-indent-paren-style 'space 318 | "Default deep indent style. 319 | Only has effect when `crystal-use-smie' is nil." 320 | :type '(choice (const t) (const nil) (const space)) 321 | :group 'crystal) 322 | 323 | (defcustom crystal-encoding-map 324 | '((us-ascii . nil) ;; Do not put coding: us-ascii 325 | (shift-jis . cp932) ;; Emacs charset name of Shift_JIS 326 | (shift_jis . cp932) ;; MIME charset name of Shift_JIS 327 | (japanese-cp932 . cp932)) ;; Emacs charset name of CP932 328 | "Alist to map encoding name from Emacs to Crystal. 329 | Associating an encoding name with nil means it needs not be 330 | explicitly declared in magic comment." 331 | :type '(repeat (cons (symbol :tag "From") (symbol :tag "To"))) 332 | :group 'crystal) 333 | 334 | (defcustom crystal-insert-encoding-magic-comment t 335 | "Insert a magic Crystal encoding comment upon save if this is non-nil. 336 | The encoding will be auto-detected. The format of the encoding comment 337 | is customizable via `crystal-encoding-magic-comment-style'. 338 | 339 | When set to `always-utf8' an utf-8 comment will always be added, 340 | even if it's not required." 341 | :type 'boolean :group 'crystal) 342 | 343 | (defcustom crystal-encoding-magic-comment-style 'crystal 344 | "The style of the magic encoding comment to use." 345 | :type '(choice 346 | (const :tag "Emacs Style" emacs) 347 | (const :tag "Crystal Style" crystal) 348 | (const :tag "Custom Style" custom)) 349 | :group 'crystal 350 | :version "24.4") 351 | 352 | (defcustom crystal-custom-encoding-magic-comment-template "# encoding: %s" 353 | "A custom encoding comment template. 354 | It is used when `crystal-encoding-magic-comment-style' is set to `custom'." 355 | :type 'string 356 | :group 'crystal 357 | :version "24.4") 358 | 359 | (defcustom crystal-use-encoding-map t 360 | "Use `crystal-encoding-map' to set encoding magic comment if this is non-nil." 361 | :type 'boolean :group 'crystal) 362 | 363 | ;;; SMIE support 364 | 365 | (require 'smie) 366 | 367 | (defconst crystal-smie-grammar 368 | (smie-prec2->grammar 369 | (smie-merge-prec2s 370 | (smie-bnf->prec2 371 | '((id) 372 | (insts (inst) (insts ";" insts)) 373 | (inst (exp) (inst "iuwu-mod" exp) 374 | ;; Somewhat incorrect (both can be used multiple times), 375 | ;; but avoids lots of conflicts: 376 | (exp "and" exp) (exp "or" exp)) 377 | (exp (exp1) (exp "," exp) (exp "=" exp) 378 | (id " @ " exp)) 379 | (exp1 (exp2) (exp2 "?" exp1 ":" exp1)) 380 | (exp2 (exp3) (exp3 "." exp2)) 381 | (exp3 ("def" insts "end") 382 | ("begin" insts-rescue-insts "end") 383 | ("do" insts "end") 384 | ("class" insts "end") ("module" insts "end") 385 | ("[" expseq "]") 386 | ("{" hashvals "}") 387 | ("{" insts "}") 388 | ("{{" exp "}}") 389 | ("{{" id "}}") 390 | ("while" insts "end") 391 | ("until" insts "end") 392 | ("unless" insts "end") 393 | ("if" if-body "end") 394 | ("for" for-body "end") 395 | ("macro" insts "end") 396 | ("{%" exp "%}") 397 | ("{%for%}" insts "{%end%}") 398 | ("{%if%}" if-macro-body "{%end%}") 399 | ("{%unless%}" insts "{%end%}") 400 | ("case" cases "end")) 401 | ;;(macro-cmd (inst) (forexp)) 402 | ;;(macro-cmds (macro-cmd) (macro-cmds ";" macro-cmds)) 403 | ;;(macro-start ("{%" macro-cmd "%}")) 404 | ;;(macro-block (macro-start macroinsts "{%end%}")) 405 | ;;(macro-code ("{%" macro-cmds "%}")) 406 | ;; FIXME this is wrong 407 | ;;(macro-inst (inst) (macro-block) (macro-code)) 408 | ;;(macro-insts (macro-inst) (macro-insts ";" macro-insts)) 409 | ;;(macro-body (macro-insts)) 410 | (macro-exp (for-head)) 411 | (formal-params ("opening-|" exp "closing-|")) 412 | (for-body (for-head ";" insts)) 413 | (for-head (exp "in" exp)) 414 | (cases (exp "then" insts) 415 | (cases "when" cases) (insts "else" insts)) 416 | (expseq (exp) );;(expseq "," expseq) 417 | (hashvals (id "=>" exp1) (hashvals "," hashvals)) 418 | (insts-rescue-insts (insts) 419 | (insts-rescue-insts "rescue" insts-rescue-insts) 420 | (insts-rescue-insts "ensure" insts-rescue-insts)) 421 | (itheni (insts) (exp "then" insts)) 422 | (ielsei (itheni) (itheni "else" insts)) 423 | (if-body (ielsei) (if-body "elsif" if-body)) 424 | (itheni-macro (insts) (exp "{%then%}" insts)) 425 | (ielsei-macro (itheni-macro) (itheni-macro "{%else%}" insts)) 426 | (if-macro-body (ielsei-macro) (if-macro-body "{%elsif%}" if-macro-body)) 427 | ) 428 | 429 | '((nonassoc "in") (assoc ";") (right " @ ") 430 | (assoc ",") (right "=")) 431 | '((assoc "when")) 432 | '((assoc "elsif")) 433 | '((assoc "{%elsif%}")) 434 | '((assoc "rescue" "ensure")) 435 | '((assoc ","))) 436 | 437 | (smie-precs->prec2 438 | '((right "=") 439 | (right "+=" "-=" "*=" "/=" "%=" "**=" "&=" "|=" "^=" 440 | "<<=" ">>=" "&&=" "||=") 441 | (left ".." "...") 442 | (left "+" "-") 443 | (left "*" "/" "%" "**") 444 | (left "&&" "||") 445 | (left "^" "&" "|") 446 | (nonassoc "<=>") 447 | (nonassoc ">" ">=" "<" "<=") 448 | (nonassoc "==" "===" "!=") 449 | (nonassoc "=~" "!~") 450 | (left "<<" ">>") 451 | (right ".")))))) 452 | 453 | (defun crystal-smie--eoms () 454 | (save-excursion 455 | (forward-char -2) 456 | (looking-at "%}") 457 | ) 458 | ) 459 | 460 | (defun crystal-smie--bosp () 461 | (save-excursion (skip-chars-backward " \t") 462 | (or (bolp) (memq (char-before) '(?\; ?=))))) 463 | 464 | (defun crystal-smie--implicit-semi-p () 465 | (save-excursion 466 | (skip-chars-backward " \t") 467 | (not (or (bolp) 468 | (memq (char-before) '(?\[ ?\()) 469 | (and (memq (char-before) 470 | '(?\; ?- ?+ ?* ?/ ?: ?. ?, ?\\ ?& ?> ?< ?% ?~ ?^)) 471 | ;; Not a binary operator symbol. 472 | (not (eq (char-before (1- (point))) ?:)) 473 | ;; Not the end of a regexp or a percent literal. 474 | (not (memq (car (syntax-after (1- (point)))) '(7 15)))) 475 | (and (eq (char-before) ?\?) 476 | (equal (save-excursion (crystal-smie--backward-token)) "?")) 477 | (and (eq (char-before) ?=) 478 | ;; Not a symbol :==, :!=, or a foo= method. 479 | (string-match "\\`\\s." (save-excursion 480 | (crystal-smie--backward-token)))) 481 | (and (eq (char-before) ?|) 482 | (member (save-excursion (crystal-smie--backward-token)) 483 | '("|" "||"))) 484 | (and (eq (car (syntax-after (1- (point)))) 2) 485 | (member (save-excursion (crystal-smie--backward-token)) 486 | '("iuwu-mod" "and" "or"))) 487 | (save-excursion 488 | (forward-comment 1) 489 | (eq (char-after) ?.)))))) 490 | 491 | (defun crystal-smie--redundant-do-p (&optional skip) 492 | (save-excursion 493 | (if skip (backward-word 1)) 494 | (member (nth 2 (smie-backward-sexp ";")) '("while" "until" "for")))) 495 | 496 | ;; this handles "macro def ... end" blocks 497 | (defun crystal-smie--redundant-macro-def-p (&optional skip) 498 | (save-excursion 499 | (if skip (backward-word 1)) 500 | (member (nth 2 (smie-backward-sexp ";")) '("macro")))) 501 | 502 | (defun crystal-smie--opening-pipe-p () 503 | (save-excursion 504 | (if (eq ?| (char-before)) (forward-char -1)) 505 | (skip-chars-backward " \t\n") 506 | (or (eq ?\{ (char-before)) 507 | (looking-back "\\_ (save-excursion (forward-comment (point-max)) (point)) 606 | (line-end-position)) 607 | (crystal-smie--forward-token)) ;Fully redundant. 608 | (t ";"))) 609 | ((equal tok "do") 610 | (cond 611 | ((not (crystal-smie--redundant-do-p 'skip)) tok) 612 | ((> (save-excursion (forward-comment (point-max)) (point)) 613 | (line-end-position)) 614 | (crystal-smie--forward-token)) ;Fully redundant. 615 | (t ";"))) 616 | (t (message "forward '%s'" tok) tok))))))))) 617 | 618 | (defun crystal-smie--backward-token () 619 | (let ((pos (point))) 620 | (forward-comment (- (point))) 621 | 622 | (cond 623 | ;; FIXME why do these never fire? 624 | ;; treat macro expr similarly to heredocs? go backwards and tokenize 625 | ;; as the last token inside of the macro expr 626 | ;;((looking-at crystal-macro-cmd-re) "{%end%}") 627 | ;;((looking-at crystal-macro-end-cmd-re) (match-string 1)) 628 | ((looking-back "%}") 629 | (message "looking back at a macro cmd") 630 | ;; scan backawards to {% 631 | (re-search-backward "{%") 632 | (message "at %s %s" (point) (char-after)) 633 | (save-excursion 634 | (forward-char 2) 635 | (skip-chars-forward " \t") 636 | ;; fixme only if token is in if/else/for/end/while/unless 637 | (let ((tok (smie-default-forward-token))) 638 | (if (member tok '("if" "else" "end" "elsif" "unless" "for" "while")) 639 | (concat "{%" tok "%}") 640 | ";")))) 641 | ((and (> pos (line-end-position)) (crystal-smie--implicit-semi-p)) 642 | (skip-chars-forward " \t") ";") 643 | ((and (bolp) (not (bobp))) ;Presumably a heredoc. 644 | ;; Tokenize the whole heredoc as semicolon. 645 | (goto-char (scan-sexps (point) -1)) 646 | ;; (message "back to heredoc") 647 | ";") 648 | ((and (> pos (point)) (not (bolp)) 649 | (crystal-smie--args-separator-p pos)) 650 | ;; We have "ID SPC ID", which is a method call, but it binds less tightly 651 | ;; than commas, since a method call can also be "ID ARG1, ARG2, ARG3". 652 | ;; In some textbooks, "e1 @ e2" is used to mean "call e1 with arg e2". 653 | " @ ") 654 | (t 655 | (let ((tok (smie-default-backward-token)) 656 | (dot (crystal-smie--at-dot-call))) 657 | (message "default backward tok is '%s'" tok) 658 | (when dot 659 | ;; (message "back dot") 660 | (setq tok (concat "." tok))) 661 | (when (and (eq ?: (char-before)) (string-match "\\`\\s." tok)) 662 | ;; (message "back :") 663 | (forward-char -1) (setq tok (concat ":" tok))) ;; bug#15208. 664 | (cond 665 | ((member tok '("unless" "if" "while" "until")) 666 | ;; (message "back if while") 667 | (if (crystal-smie--bosp) 668 | tok "iuwu-mod")) 669 | ((equal tok "|") 670 | ;; (message "back pipe") 671 | (cond 672 | ((crystal-smie--opening-pipe-p) "opening-|") 673 | ((crystal-smie--closing-pipe-p) "closing-|") 674 | (t tok))) 675 | ((string-match-p "\\`|[*&]\\'" tok) 676 | ;; (message "back backtick") 677 | (forward-char 1) 678 | (substring tok 1)) 679 | ((and (equal tok "") (eq ?\\ (char-before)) (looking-at "\n")) 680 | ;; (message "back escaped") 681 | (forward-char -1) (crystal-smie--backward-token)) 682 | ((equal tok "def") 683 | ;; (message "back def") 684 | (cond 685 | ((not (crystal-smie--redundant-macro-def-p)) tok) 686 | ((> (save-excursion (forward-word 1) 687 | (forward-comment (point-max)) (point)) 688 | (line-end-position)) 689 | (crystal-smie--backward-token)) ;Fully redundant. 690 | (t ";"))) 691 | ((equal tok "do") 692 | ;; (message "back do") 693 | (cond 694 | ((not (crystal-smie--redundant-do-p)) tok) 695 | ((> (save-excursion (forward-word 1) 696 | (forward-comment (point-max)) (point)) 697 | (line-end-position)) 698 | (crystal-smie--backward-token)) ;Fully redundant. 699 | (t ";"))) 700 | (t (message "backward '%s'" tok) tok))))))) 701 | 702 | (defun crystal-smie--indent-to-stmt () 703 | (save-excursion 704 | (smie-backward-sexp ";") 705 | (cons 'column (smie-indent-virtual)))) 706 | 707 | (defun crystal-smie--indent-to-stmt-p (keyword) 708 | (or (eq t crystal-align-to-stmt-keywords) 709 | (memq (intern keyword) crystal-align-to-stmt-keywords))) 710 | 711 | (defun crystal-smie-rules (kind token) 712 | (message "indent '%s' '%s'" kind token) 713 | (pcase (cons kind token) 714 | (`(:elem . basic) crystal-indent-level) 715 | ;; "foo" "bar" is the concatenation of the two strings, so the second 716 | ;; should be aligned with the first. 717 | (`(:elem . args) (if (looking-at "\\s\"") 0)) 718 | ;; (`(:after . ",") (smie-rule-separator kind)) 719 | (`(:before . ";") 720 | (message "Before ;") 721 | (cond 722 | ((smie-rule-parent-p "def" "begin" "do" "class" "module" "{%for%}" 723 | "while" "until" "unless" "macro" 724 | "if" "then" "elsif" "else" "when" "{%if%}" 725 | "{%elsif%}" "{%else%}" "{%unless%}" 726 | "rescue" "ensure" "{") 727 | ;; (message "Still got this one %s" (smie-indent--parent)) 728 | (smie-rule-parent crystal-indent-level)) 729 | ;; For (invalid) code between switch and case. 730 | ;; (if (smie-parent-p "switch") 4) 731 | )) 732 | 733 | (`(:before . ,(or `"(" `"[" `"{")) 734 | (message "Before ( [ {") 735 | (cond 736 | ((and (equal token "{") 737 | (not (smie-rule-prev-p "(" "{" "[" "," "=>" "=" "return" ";")) 738 | (save-excursion 739 | (forward-comment -1) 740 | (not (eq (preceding-char) ?:)))) 741 | ;; Curly block opener. 742 | (message "curly block opener") 743 | (crystal-smie--indent-to-stmt)) 744 | ((smie-rule-hanging-p) 745 | (message "hanging p") 746 | ;; Treat purely syntactic block-constructs as being part of their parent, 747 | ;; when the opening token is hanging and the parent is not an 748 | ;; open-paren. 749 | (cond 750 | ((eq (car (smie-indent--parent)) t) nil) 751 | ;; When after `.', let's always de-indent, 752 | ;; because when `.' is inside the line, the 753 | ;; additional indentation from it looks out of place. 754 | ((smie-rule-parent-p ".") 755 | (let (smie--parent) 756 | (save-excursion 757 | ;; Traverse up the parents until the parent is "." at 758 | ;; indentation, or any other token. 759 | (while (and (let ((parent (smie-indent--parent))) 760 | (goto-char (cadr parent)) 761 | (save-excursion 762 | (unless (integerp (car parent)) (forward-char -1)) 763 | (not (crystal-smie--bosp)))) 764 | (progn 765 | (setq smie--parent nil) 766 | (smie-rule-parent-p ".")))) 767 | (smie-rule-parent)))) 768 | (t (smie-rule-parent)))))) 769 | (`(:after . ,(or `"(" "[" "{")) 770 | ;; FIXME: Shouldn't this be the default behavior of 771 | ;; `smie-indent-after-keyword'? 772 | (message "After ([{") 773 | (save-excursion 774 | (forward-char 1) 775 | (skip-chars-forward " \t") 776 | ;; `smie-rule-hanging-p' is not good enough here, 777 | ;; because we want to reject hanging tokens at bol, too. 778 | (unless (or (eolp) (forward-comment 1)) 779 | (cons 'column (current-column))))) 780 | (`(:before . " @ ") 781 | (message "Before @") 782 | (save-excursion 783 | (skip-chars-forward " \t") 784 | (cons 'column (current-column)))) 785 | (`(:before . "do") (crystal-smie--indent-to-stmt)) 786 | (`(:before . ".") 787 | (if (smie-rule-sibling-p) 788 | (and crystal-align-chained-calls 0) 789 | crystal-indent-level)) 790 | (`(:before . ,(or `"else" `"then" `"elsif" `"rescue" `"ensure" `"{%else%}" `"{%elsif%}")) 791 | (smie-rule-parent)) 792 | (`(:before . "when") 793 | ;; Align to the previous `when', but look up the virtual 794 | ;; indentation of `case'. 795 | (if (smie-rule-sibling-p) 0 (smie-rule-parent))) 796 | (`(:after . ,(or "=" "iuwu-mod" "+" "-" "*" "/" "&&" "||" "%" "**" "^" "&" 797 | "<=>" ">" "<" ">=" "<=" "==" "===" "!=" "<<" ">>" 798 | "+=" "-=" "*=" "/=" "%=" "**=" "&=" "|=" "^=" "|" 799 | "<<=" ">>=" "&&=" "||=" "and" "or")) 800 | (and (smie-rule-parent-p ";" nil) 801 | (smie-indent--hanging-p) 802 | crystal-indent-level)) 803 | (`(:after . ,(or "?" ":")) crystal-indent-level) 804 | (`(:before . ,(guard (memq (intern-soft token) crystal-alignable-keywords))) 805 | (when (not (crystal--at-indentation-p)) 806 | (if (crystal-smie--indent-to-stmt-p token) 807 | (crystal-smie--indent-to-stmt) 808 | (cons 'column (current-column))))) 809 | )) 810 | 811 | (defun crystal--at-indentation-p (&optional point) 812 | (save-excursion 813 | (unless point (setq point (point))) 814 | (forward-line 0) 815 | (skip-chars-forward " \t") 816 | (eq (point) point))) 817 | 818 | (defun crystal-imenu-create-index-in-block (prefix beg end) 819 | "Create an imenu index of methods inside a block." 820 | (let ((index-alist '()) (case-fold-search nil) 821 | name next pos decl sing) 822 | (goto-char beg) 823 | (while (re-search-forward "^\\s *\\(\\(class\\s +\\|\\(class\\s *<<\\s *\\)\\|module\\s +\\)\\([^\(<\n ]+\\)\\|\\(def\\|alias\\)\\s +\\([^\(\n ]+\\)\\)" end t) 824 | (setq sing (match-beginning 3)) 825 | (setq decl (match-string 5)) 826 | (setq next (match-end 0)) 827 | (setq name (or (match-string 4) (match-string 6))) 828 | (setq pos (match-beginning 0)) 829 | (cond 830 | ((string= "alias" decl) 831 | (if prefix (setq name (concat prefix name))) 832 | (push (cons name pos) index-alist)) 833 | ((string= "def" decl) 834 | (if prefix 835 | (setq name 836 | (cond 837 | ((string-match "^self\." name) 838 | (concat (substring prefix 0 -1) (substring name 4))) 839 | (t (concat prefix name))))) 840 | (push (cons name pos) index-alist) 841 | (crystal-accurate-end-of-block end)) 842 | (t 843 | (if (string= "self" name) 844 | (if prefix (setq name (substring prefix 0 -1))) 845 | (if prefix (setq name (concat (substring prefix 0 -1) "::" name))) 846 | (push (cons name pos) index-alist)) 847 | (crystal-accurate-end-of-block end) 848 | (setq beg (point)) 849 | (setq index-alist 850 | (nconc (crystal-imenu-create-index-in-block 851 | (concat name (if sing "." "#")) 852 | next beg) index-alist)) 853 | (goto-char beg)))) 854 | index-alist)) 855 | 856 | 857 | (defun crystal-imenu-create-index () 858 | "Create an imenu index of all methods in the buffer." 859 | (nreverse (crystal-imenu-create-index-in-block nil (point-min) nil))) 860 | 861 | (defun crystal-accurate-end-of-block (&optional end) 862 | "Jump to the end of the current block or END, whichever is closer." 863 | (let (state 864 | (end (or end (point-max)))) 865 | (if crystal-use-smie 866 | (save-restriction 867 | (back-to-indentation) 868 | (narrow-to-region (point) end) 869 | (smie-forward-sexp)) 870 | (while (and (setq state (apply 'crystal-parse-partial end state)) 871 | (>= (nth 2 state) 0) (< (point) end)))))) 872 | 873 | (defun crystal-mode-variables () 874 | "Set up initial buffer-local variables for Crystal mode." 875 | (setq indent-tabs-mode crystal-indent-tabs-mode) 876 | (if crystal-use-smie 877 | (smie-setup crystal-smie-grammar #'crystal-smie-rules 878 | :forward-token #'crystal-smie--forward-token 879 | :backward-token #'crystal-smie--backward-token) 880 | (setq-local indent-line-function 'crystal-indent-line)) 881 | (setq-local comment-start "# ") 882 | (setq-local comment-end "") 883 | (setq-local comment-column crystal-comment-column) 884 | (setq-local comment-start-skip "#+ *") 885 | (setq-local parse-sexp-ignore-comments t) 886 | (setq-local parse-sexp-lookup-properties t) 887 | (setq-local paragraph-start (concat "$\\|" page-delimiter)) 888 | (setq-local paragraph-separate paragraph-start) 889 | (setq-local paragraph-ignore-fill-prefix t)) 890 | 891 | (defun crystal--insert-coding-comment (encoding) 892 | "Insert a magic coding comment for ENCODING. 893 | The style of the comment is controlled by `crystal-encoding-magic-comment-style'." 894 | (let ((encoding-magic-comment-template 895 | (pcase crystal-encoding-magic-comment-style 896 | (`crystal "# coding: %s") 897 | (`emacs "# -*- coding: %s -*-") 898 | (`custom 899 | crystal-custom-encoding-magic-comment-template)))) 900 | (insert 901 | (format encoding-magic-comment-template encoding) 902 | "\n"))) 903 | 904 | (defun crystal--detect-encoding () 905 | (if (eq crystal-insert-encoding-magic-comment 'always-utf8) 906 | "utf-8" 907 | (let ((coding-system 908 | (or save-buffer-coding-system 909 | buffer-file-coding-system))) 910 | (if coding-system 911 | (setq coding-system 912 | (or (coding-system-get coding-system 'mime-charset) 913 | (coding-system-change-eol-conversion coding-system nil)))) 914 | (if coding-system 915 | (symbol-name 916 | (if crystal-use-encoding-map 917 | (let ((elt (assq coding-system crystal-encoding-map))) 918 | (if elt (cdr elt) coding-system)) 919 | coding-system)) 920 | "ascii-8bit")))) 921 | 922 | (defun crystal--encoding-comment-required-p () 923 | (or (eq crystal-insert-encoding-magic-comment 'always-utf8) 924 | (re-search-forward "[^\0-\177]" nil t))) 925 | 926 | (defun crystal-mode-set-encoding () 927 | "Insert a magic comment header with the proper encoding if necessary." 928 | (save-excursion 929 | (widen) 930 | (goto-char (point-min)) 931 | (when (crystal--encoding-comment-required-p) 932 | (goto-char (point-min)) 933 | (let ((coding-system (crystal--detect-encoding))) 934 | (when coding-system 935 | (if (looking-at "^#!") (beginning-of-line 2)) 936 | (cond ((looking-at "\\s *#\\s *.*\\(en\\)?coding\\s *:\\s *\\([-a-z0-9_]*\\)") 937 | ;; update existing encoding comment if necessary 938 | (unless (string= (match-string 2) coding-system) 939 | (goto-char (match-beginning 2)) 940 | (delete-region (point) (match-end 2)) 941 | (insert coding-system))) 942 | ((looking-at "\\s *#.*coding\\s *[:=]")) 943 | (t (when crystal-insert-encoding-magic-comment 944 | (crystal--insert-coding-comment coding-system)))) 945 | (when (buffer-modified-p) 946 | (basic-save-buffer-1))))))) 947 | 948 | (defvar crystal--electric-indent-chars '(?. ?\) ?} ?\])) 949 | 950 | (defun crystal--electric-indent-p (char) 951 | (cond 952 | ((memq char crystal--electric-indent-chars) 953 | ;; Reindent after typing a char affecting indentation. 954 | (crystal--at-indentation-p (1- (point)))) 955 | ((memq (char-after) crystal--electric-indent-chars) 956 | ;; Reindent after inserting something in front of the above. 957 | (crystal--at-indentation-p (1- (point)))) 958 | ((or (and (>= char ?a) (<= char ?z)) (memq char '(?_ ?? ?! ?:))) 959 | (let ((pt (point))) 960 | (save-excursion 961 | (skip-chars-backward "[:alpha:]:_?!") 962 | (and (crystal--at-indentation-p) 963 | (looking-at (regexp-opt (cons "end" crystal-block-mid-keywords))) 964 | ;; Outdent after typing a keyword. 965 | (or (eq (match-end 0) pt) 966 | ;; Reindent if it wasn't a keyword after all. 967 | (eq (match-end 0) (1- pt))))))))) 968 | 969 | ;; FIXME: Remove this? It's unused here, but some redefinitions of 970 | ;; `crystal-calculate-indent' in user init files still call it. 971 | (defun crystal-current-indentation () 972 | "Return the indentation level of current line." 973 | (save-excursion 974 | (beginning-of-line) 975 | (back-to-indentation) 976 | (current-column))) 977 | 978 | (defun crystal-indent-line (&optional ignored) 979 | "Correct the indentation of the current Crystal line." 980 | (interactive) 981 | (crystal-indent-to (crystal-calculate-indent))) 982 | 983 | (defun crystal-indent-to (column) 984 | "Indent the current line to COLUMN." 985 | (when column 986 | (let (shift top beg) 987 | (and (< column 0) (error "Invalid nesting")) 988 | (setq shift (current-column)) 989 | (beginning-of-line) 990 | (setq beg (point)) 991 | (back-to-indentation) 992 | (setq top (current-column)) 993 | (skip-chars-backward " \t") 994 | (if (>= shift top) (setq shift (- shift top)) 995 | (setq shift 0)) 996 | (if (and (bolp) 997 | (= column top)) 998 | (move-to-column (+ column shift)) 999 | (move-to-column top) 1000 | (delete-region beg (point)) 1001 | (beginning-of-line) 1002 | (indent-to column) 1003 | (move-to-column (+ column shift)))))) 1004 | 1005 | (defun crystal-special-char-p (&optional pos) 1006 | "Return t if the character before POS is a special character. 1007 | If omitted, POS defaults to the current point. 1008 | Special characters are `?', `$', `:' when preceded by whitespace, 1009 | and `\\' when preceded by `?'." 1010 | (setq pos (or pos (point))) 1011 | (let ((c (char-before pos)) (b (and (< (point-min) pos) 1012 | (char-before (1- pos))))) 1013 | (cond ((or (eq c ??) (eq c ?$))) 1014 | ((and (eq c ?:) (or (not b) (eq (char-syntax b) ? )))) 1015 | ((eq c ?\\) (eq b ??))))) 1016 | 1017 | (defun crystal-singleton-class-p (&optional pos) 1018 | (save-excursion 1019 | (when pos (goto-char pos)) 1020 | (forward-word -1) 1021 | (and (or (bolp) (not (eq (char-before (point)) ?_))) 1022 | (looking-at crystal-singleton-class-re)))) 1023 | 1024 | (defun crystal-expr-beg (&optional option) 1025 | "Check if point is possibly at the beginning of an expression. 1026 | OPTION specifies the type of the expression. 1027 | Can be one of `heredoc', `modifier', `expr-qstr', `expr-re'. `macro-cmd'" 1028 | (save-excursion 1029 | (store-match-data nil) 1030 | (let ((space (skip-chars-backward " \t")) 1031 | (start (point))) 1032 | (cond 1033 | ((bolp) t) 1034 | ((progn 1035 | (forward-char -1) 1036 | (and (looking-at "\\?") 1037 | (or (eq (char-syntax (char-before (point))) ?w) 1038 | (crystal-special-char-p)))) 1039 | nil) 1040 | ((looking-at crystal-operator-re)) 1041 | ((eq option 'heredoc) 1042 | (and (< space 0) (not (crystal-singleton-class-p start)))) 1043 | ((or (looking-at "[\\[({,;]") 1044 | (and (looking-at "[!?]") 1045 | (or (not (eq option 'modifier)) 1046 | (bolp) 1047 | (save-excursion (forward-char -1) (looking-at "\\Sw$")))) 1048 | (and (looking-at crystal-symbol-re) 1049 | (skip-chars-backward crystal-symbol-chars) 1050 | (cond 1051 | ((looking-at (regexp-opt 1052 | (append crystal-block-beg-keywords 1053 | crystal-block-op-keywords 1054 | crystal-block-mid-keywords) 1055 | 'words)) 1056 | (goto-char (match-end 0)) 1057 | (not (looking-at "\\s_"))) 1058 | ((eq option 'expr-qstr) 1059 | (looking-at "[a-zA-Z][a-zA-z0-9_]* +%[^ \t}]")) 1060 | ((eq option 'expr-re) 1061 | (looking-at "[a-zA-Z][a-zA-z0-9_]* +/[^ \t]")) 1062 | ((eq option 'macro-cmd) 1063 | (looking-at "{%")) 1064 | ((eq option 'macro-var) 1065 | (looking-at "{{")) 1066 | (t nil))))))))) 1067 | 1068 | (defun crystal-forward-string (term &optional end no-error expand) 1069 | "Move forward across one balanced pair of string delimiters. 1070 | Skips escaped delimiters. If EXPAND is non-nil, also ignores 1071 | delimiters in interpolated strings. 1072 | 1073 | TERM should be a string containing either a single, self-matching 1074 | delimiter (e.g. \"/\"), or a pair of matching delimiters with the 1075 | close delimiter first (e.g. \"][\"). 1076 | 1077 | When non-nil, search is bounded by position END. 1078 | 1079 | Throws an error if a balanced match is not found, unless NO-ERROR 1080 | is non-nil, in which case nil will be returned. 1081 | 1082 | This command assumes the character after point is an opening 1083 | delimiter." 1084 | (let ((n 1) (c (string-to-char term)) 1085 | (re (concat "[^\\]\\(\\\\\\\\\\)*\\(" 1086 | (if (string= term "^") ;[^] is not a valid regexp 1087 | "\\^" 1088 | (concat "[" term "]")) 1089 | (when expand "\\|\\(#{\\)") 1090 | "\\)"))) 1091 | (while (and (re-search-forward re end no-error) 1092 | (if (match-beginning 3) 1093 | (crystal-forward-string "}{" end no-error nil) 1094 | (> (setq n (if (eq (char-before (point)) c) 1095 | (1- n) (1+ n))) 0))) 1096 | (forward-char -1)) 1097 | (cond ((zerop n)) 1098 | (no-error nil) 1099 | ((error "Unterminated string"))))) 1100 | 1101 | (defun crystal-deep-indent-paren-p (c) 1102 | "TODO: document." 1103 | (cond ((listp crystal-deep-indent-paren) 1104 | (let ((deep (assoc c crystal-deep-indent-paren))) 1105 | (cond (deep 1106 | (or (cdr deep) crystal-deep-indent-paren-style)) 1107 | ((memq c crystal-deep-indent-paren) 1108 | crystal-deep-indent-paren-style)))) 1109 | ((eq c crystal-deep-indent-paren) crystal-deep-indent-paren-style) 1110 | ((eq c ?\( ) crystal-deep-arglist))) 1111 | 1112 | (defun crystal-parse-partial (&optional end in-string nest depth pcol indent) 1113 | "TODO: document throughout function body." 1114 | (or depth (setq depth 0)) 1115 | (or indent (setq indent 0)) 1116 | (when (re-search-forward crystal-delimiter end 'move) 1117 | (let ((pnt (point)) w re expand) 1118 | (goto-char (match-beginning 0)) 1119 | (cond 1120 | ((and (memq (char-before) '(?@ ?$)) (looking-at "\\sw")) 1121 | (goto-char pnt)) 1122 | ((looking-at "[\"`]") ;skip string 1123 | (cond 1124 | ((and (not (eobp)) 1125 | (crystal-forward-string (buffer-substring (point) (1+ (point))) 1126 | end t t)) 1127 | nil) 1128 | (t 1129 | (setq in-string (point)) 1130 | (goto-char end)))) 1131 | ((looking-at "'") 1132 | (cond 1133 | ((and (not (eobp)) 1134 | (re-search-forward "[^\\]\\(\\\\\\\\\\)*'" end t)) 1135 | nil) 1136 | (t 1137 | (setq in-string (point)) 1138 | (goto-char end)))) 1139 | ((looking-at "/=") 1140 | (goto-char pnt)) 1141 | ((looking-at "/") 1142 | (cond 1143 | ((and (not (eobp)) (crystal-expr-beg 'expr-re)) 1144 | (if (crystal-forward-string "/" end t t) 1145 | nil 1146 | (setq in-string (point)) 1147 | (goto-char end))) 1148 | (t 1149 | (goto-char pnt)))) 1150 | ((looking-at "%") 1151 | (cond 1152 | ((and (not (eobp)) 1153 | (crystal-expr-beg 'expr-qstr) 1154 | (not (looking-at "%=")) 1155 | (not (looking-at "%}")) 1156 | (looking-at "%[QqrxWw]?\\([^a-zA-Z0-9 \t\n{]\\)")) 1157 | (goto-char (match-beginning 1)) 1158 | (setq expand (not (memq (char-before) '(?q ?w)))) 1159 | (setq w (match-string 1)) 1160 | (cond 1161 | ((string= w "[") (setq re "][")) 1162 | ((string= w "{") (setq re "}{")) 1163 | ((string= w "(") (setq re ")(")) 1164 | ((string= w "<") (setq re "><")) 1165 | ((and expand (string= w "\\")) 1166 | (setq w (concat "\\" w)))) 1167 | (unless (cond (re (crystal-forward-string re end t expand)) 1168 | (expand (crystal-forward-string w end t t)) 1169 | (t (re-search-forward 1170 | (if (string= w "\\") 1171 | "\\\\[^\\]*\\\\" 1172 | (concat "[^\\]\\(\\\\\\\\\\)*" w)) 1173 | end t))) 1174 | (setq in-string (point)) 1175 | (goto-char end))) 1176 | (t 1177 | (goto-char pnt)))) 1178 | ((looking-at "\\?") ;skip ?char 1179 | (cond 1180 | ((and (crystal-expr-beg) 1181 | (looking-at "?\\(\\\\C-\\|\\\\M-\\)*\\\\?.")) 1182 | (goto-char (match-end 0))) 1183 | (t 1184 | (goto-char pnt)))) 1185 | ((looking-at "\\$") ;skip $char 1186 | (goto-char pnt) 1187 | (forward-char 1)) 1188 | ((looking-at "#") ;skip comment 1189 | (forward-line 1) 1190 | (goto-char (point)) 1191 | ) 1192 | ((looking-at "[\\[{(]") 1193 | (let ((deep (crystal-deep-indent-paren-p (char-after)))) 1194 | (if (and deep (or (not (eq (char-after) ?\{)) (crystal-expr-beg))) 1195 | (progn 1196 | (and (eq deep 'space) (looking-at ".\\s +[^# \t\n]") 1197 | (setq pnt (1- (match-end 0)))) 1198 | (setq nest (cons (cons (char-after (point)) pnt) nest)) 1199 | (setq pcol (cons (cons pnt depth) pcol)) 1200 | (setq depth 0)) 1201 | (setq nest (cons (cons (char-after (point)) pnt) nest)) 1202 | (setq depth (1+ depth)))) 1203 | (goto-char pnt) 1204 | ) 1205 | ((looking-at "[])}]") 1206 | (if (crystal-deep-indent-paren-p (matching-paren (char-after))) 1207 | (setq depth (cdr (car pcol)) pcol (cdr pcol)) 1208 | (setq depth (1- depth))) 1209 | (setq nest (cdr nest)) 1210 | (goto-char pnt)) 1211 | ((looking-at crystal-block-end-re) 1212 | (if (or (and (not (bolp)) 1213 | (progn 1214 | (forward-char -1) 1215 | (setq w (char-after (point))) 1216 | (or (eq ?_ w) 1217 | (eq ?. w)))) 1218 | (progn 1219 | (goto-char pnt) 1220 | (setq w (char-after (point))) 1221 | (or (eq ?_ w) 1222 | (eq ?! w) 1223 | (eq ?? w)))) 1224 | nil 1225 | (setq nest (cdr nest)) 1226 | (setq depth (1- depth))) 1227 | (goto-char pnt)) 1228 | ((looking-at "def\\s +[^(\n;]*") 1229 | (if (or (bolp) 1230 | (progn 1231 | (forward-char -1) 1232 | (not (eq ?_ (char-after (point)))))) 1233 | (progn 1234 | (setq nest (cons (cons nil pnt) nest)) 1235 | (setq depth (1+ depth)))) 1236 | (goto-char (match-end 0))) 1237 | ((looking-at (concat "\\_<\\(" crystal-block-beg-re "\\)\\_>")) 1238 | (and 1239 | (save-match-data 1240 | (or (not (looking-at "do\\_>")) 1241 | (save-excursion 1242 | (back-to-indentation) 1243 | (not (looking-at crystal-non-block-do-re))))) 1244 | (or (bolp) 1245 | (progn 1246 | (forward-char -1) 1247 | (setq w (char-after (point))) 1248 | (not (or (eq ?_ w) 1249 | (eq ?. w))))) 1250 | (goto-char pnt) 1251 | (not (eq ?! (char-after (point)))) 1252 | (skip-chars-forward " \t") 1253 | (goto-char (match-beginning 0)) 1254 | (or (not (looking-at crystal-modifier-re)) 1255 | (crystal-expr-beg 'modifier)) 1256 | (goto-char pnt) 1257 | (setq nest (cons (cons nil pnt) nest)) 1258 | (setq depth (1+ depth))) 1259 | (goto-char pnt)) 1260 | ((looking-at ":\\(['\"]\\)") 1261 | (goto-char (match-beginning 1)) 1262 | (crystal-forward-string (match-string 1) end t)) 1263 | ((looking-at ":\\([-,.+*/%&|^~<>]=?\\|===?\\|<=>\\|![~=]?\\)") 1264 | (goto-char (match-end 0))) 1265 | ((looking-at ":\\([a-zA-Z_][a-zA-Z_0-9]*[!?=]?\\)?") 1266 | (goto-char (match-end 0))) 1267 | ((or (looking-at "\\.\\.\\.?") 1268 | (looking-at "\\.[0-9]+") 1269 | (looking-at "\\.[a-zA-Z_0-9]+") 1270 | (looking-at "\\.")) 1271 | (goto-char (match-end 0))) 1272 | ((looking-at "^=begin") 1273 | (if (re-search-forward "^=end" end t) 1274 | (forward-line 1) 1275 | (setq in-string (match-end 0)) 1276 | (goto-char end))) 1277 | ((looking-at "<<") 1278 | (cond 1279 | ((and (crystal-expr-beg 'heredoc) 1280 | (looking-at "<<\\(-\\)?\\(\\([\"'`]\\)\\([^\n]+?\\)\\3\\|\\(?:\\sw\\|\\s_\\)+\\)")) 1281 | (setq re (regexp-quote (or (match-string 4) (match-string 2)))) 1282 | (if (match-beginning 1) (setq re (concat "\\s *" re))) 1283 | (let* ((id-end (goto-char (match-end 0))) 1284 | (line-end-position (point-at-eol)) 1285 | (state (list in-string nest depth pcol indent))) 1286 | ;; parse the rest of the line 1287 | (while (and (> line-end-position (point)) 1288 | (setq state (apply 'crystal-parse-partial 1289 | line-end-position state)))) 1290 | (setq in-string (car state) 1291 | nest (nth 1 state) 1292 | depth (nth 2 state) 1293 | pcol (nth 3 state) 1294 | indent (nth 4 state)) 1295 | ;; skip heredoc section 1296 | (if (re-search-forward (concat "^" re "$") end 'move) 1297 | (forward-line 1) 1298 | (setq in-string id-end) 1299 | (goto-char end)))) 1300 | (t 1301 | (goto-char pnt)))) 1302 | ((looking-at "^__END__$") 1303 | (goto-char pnt)) 1304 | ((and (looking-at crystal-here-doc-beg-re) 1305 | (boundp 'crystal-indent-point)) 1306 | (if (re-search-forward (crystal-here-doc-end-match) 1307 | crystal-indent-point t) 1308 | (forward-line 1) 1309 | (setq in-string (match-end 0)) 1310 | (goto-char crystal-indent-point))) 1311 | (t 1312 | (error (format "Bad string %s" 1313 | (buffer-substring (point) pnt) 1314 | )))))) 1315 | (list in-string nest depth pcol)) 1316 | 1317 | (defun crystal-parse-region (start end) 1318 | "TODO: document." 1319 | (let (state) 1320 | (save-excursion 1321 | (if start 1322 | (goto-char start) 1323 | (crystal-beginning-of-indent)) 1324 | (save-restriction 1325 | (narrow-to-region (point) end) 1326 | (while (and (> end (point)) 1327 | (setq state (apply 'crystal-parse-partial end state)))))) 1328 | (list (nth 0 state) ; in-string 1329 | (car (nth 1 state)) ; nest 1330 | (nth 2 state) ; depth 1331 | (car (car (nth 3 state))) ; pcol 1332 | ;(car (nth 5 state)) ; indent 1333 | ))) 1334 | 1335 | (defun crystal-indent-size (pos nest) 1336 | "Return the indentation level in spaces NEST levels deeper than POS." 1337 | (+ pos (* (or nest 1) crystal-indent-level))) 1338 | 1339 | (defun crystal-calculate-indent (&optional parse-start) 1340 | "Return the proper indentation level of the current line." 1341 | ;; TODO: Document body 1342 | (save-excursion 1343 | (beginning-of-line) 1344 | (let ((crystal-indent-point (point)) 1345 | (case-fold-search nil) 1346 | state eol begin op-end 1347 | (paren (progn (skip-syntax-forward " ") 1348 | (and (char-after) (matching-paren (char-after))))) 1349 | (indent 0)) 1350 | (if parse-start 1351 | (goto-char parse-start) 1352 | (crystal-beginning-of-indent) 1353 | (setq parse-start (point))) 1354 | (back-to-indentation) 1355 | (setq indent (current-column)) 1356 | (setq state (crystal-parse-region parse-start crystal-indent-point)) 1357 | (cond 1358 | ((nth 0 state) ; within string 1359 | (setq indent nil)) ; do nothing 1360 | ((car (nth 1 state)) ; in paren 1361 | (goto-char (setq begin (cdr (nth 1 state)))) 1362 | (let ((deep (crystal-deep-indent-paren-p (car (nth 1 state))))) 1363 | (if deep 1364 | (cond ((and (eq deep t) (eq (car (nth 1 state)) paren)) 1365 | (skip-syntax-backward " ") 1366 | (setq indent (1- (current-column)))) 1367 | ((let ((s (crystal-parse-region (point) crystal-indent-point))) 1368 | (and (nth 2 s) (> (nth 2 s) 0) 1369 | (or (goto-char (cdr (nth 1 s))) t))) 1370 | (forward-word -1) 1371 | (setq indent (crystal-indent-size (current-column) 1372 | (nth 2 state)))) 1373 | (t 1374 | (setq indent (current-column)) 1375 | (cond ((eq deep 'space)) 1376 | (paren (setq indent (1- indent))) 1377 | (t (setq indent (crystal-indent-size (1- indent) 1)))))) 1378 | (if (nth 3 state) (goto-char (nth 3 state)) 1379 | (goto-char parse-start) (back-to-indentation)) 1380 | (setq indent (crystal-indent-size (current-column) (nth 2 state)))) 1381 | (and (eq (car (nth 1 state)) paren) 1382 | (crystal-deep-indent-paren-p (matching-paren paren)) 1383 | (search-backward (char-to-string paren)) 1384 | (setq indent (current-column))))) 1385 | ((and (nth 2 state) (> (nth 2 state) 0)) ; in nest 1386 | (if (null (cdr (nth 1 state))) 1387 | (error "Invalid nesting")) 1388 | (goto-char (cdr (nth 1 state))) 1389 | (forward-word -1) ; skip back a keyword 1390 | (setq begin (point)) 1391 | (cond 1392 | ((looking-at "do\\>[^_]") ; iter block is a special case 1393 | (if (nth 3 state) (goto-char (nth 3 state)) 1394 | (goto-char parse-start) (back-to-indentation)) 1395 | (setq indent (crystal-indent-size (current-column) (nth 2 state)))) 1396 | (t 1397 | (setq indent (+ (current-column) crystal-indent-level))))) 1398 | 1399 | ((and (nth 2 state) (< (nth 2 state) 0)) ; in negative nest 1400 | (setq indent (crystal-indent-size (current-column) (nth 2 state))))) 1401 | (when indent 1402 | (goto-char crystal-indent-point) 1403 | (end-of-line) 1404 | (setq eol (point)) 1405 | (beginning-of-line) 1406 | (cond 1407 | ((and (not (crystal-deep-indent-paren-p paren)) 1408 | (re-search-forward crystal-negative eol t)) 1409 | (and (not (eq ?_ (char-after (match-end 0)))) 1410 | (setq indent (- indent crystal-indent-level)))) 1411 | ((and 1412 | (save-excursion 1413 | (beginning-of-line) 1414 | (not (bobp))) 1415 | (or (crystal-deep-indent-paren-p t) 1416 | (null (car (nth 1 state))))) 1417 | ;; goto beginning of non-empty no-comment line 1418 | (let (end done) 1419 | (while (not done) 1420 | (skip-chars-backward " \t\n") 1421 | (setq end (point)) 1422 | (beginning-of-line) 1423 | (if (re-search-forward "^\\s *#" end t) 1424 | (beginning-of-line) 1425 | (setq done t)))) 1426 | (end-of-line) 1427 | ;; skip the comment at the end 1428 | (skip-chars-backward " \t") 1429 | (let (end (pos (point))) 1430 | (beginning-of-line) 1431 | (while (and (re-search-forward "#" pos t) 1432 | (setq end (1- (point))) 1433 | (or (crystal-special-char-p end) 1434 | (and (setq state (crystal-parse-region 1435 | parse-start end)) 1436 | (nth 0 state)))) 1437 | (setq end nil)) 1438 | (goto-char (or end pos)) 1439 | (skip-chars-backward " \t") 1440 | (setq begin (if (and end (nth 0 state)) pos (cdr (nth 1 state)))) 1441 | (setq state (crystal-parse-region parse-start (point)))) 1442 | (or (bobp) (forward-char -1)) 1443 | (and 1444 | (or (and (looking-at crystal-symbol-re) 1445 | (skip-chars-backward crystal-symbol-chars) 1446 | (looking-at (concat "\\<\\(" crystal-block-hanging-re 1447 | "\\)\\>")) 1448 | (not (eq (point) (nth 3 state))) 1449 | (save-excursion 1450 | (goto-char (match-end 0)) 1451 | (not (looking-at "[a-z_]")))) 1452 | (and (looking-at crystal-operator-re) 1453 | (not (crystal-special-char-p)) 1454 | (save-excursion 1455 | (forward-char -1) 1456 | (or (not (looking-at crystal-operator-re)) 1457 | (not (eq (char-before) ?:)))) 1458 | ;; Operator at the end of line. 1459 | (let ((c (char-after (point)))) 1460 | (and 1461 | ;; (or (null begin) 1462 | ;; (save-excursion 1463 | ;; (goto-char begin) 1464 | ;; (skip-chars-forward " \t") 1465 | ;; (not (or (eolp) (looking-at "#") 1466 | ;; (and (eq (car (nth 1 state)) ?{) 1467 | ;; (looking-at "|")))))) 1468 | ;; Not a regexp or percent literal. 1469 | (null (nth 0 (crystal-parse-region (or begin parse-start) 1470 | (point)))) 1471 | (or (not (eq ?| (char-after (point)))) 1472 | (save-excursion 1473 | (or (eolp) (forward-char -1)) 1474 | (cond 1475 | ((search-backward "|" nil t) 1476 | (skip-chars-backward " \t\n") 1477 | (and (not (eolp)) 1478 | (progn 1479 | (forward-char -1) 1480 | (not (looking-at "{"))) 1481 | (progn 1482 | (forward-word -1) 1483 | (not (looking-at "do\\>[^_]"))))) 1484 | (t t)))) 1485 | (not (eq ?, c)) 1486 | (setq op-end t))))) 1487 | (setq indent 1488 | (cond 1489 | ((and 1490 | (null op-end) 1491 | (not (looking-at (concat "\\<\\(" crystal-block-hanging-re 1492 | "\\)\\>"))) 1493 | (eq (crystal-deep-indent-paren-p t) 'space) 1494 | (not (bobp))) 1495 | (widen) 1496 | (goto-char (or begin parse-start)) 1497 | (skip-syntax-forward " ") 1498 | (current-column)) 1499 | ((car (nth 1 state)) indent) 1500 | (t 1501 | (+ indent crystal-indent-level)))))))) 1502 | (goto-char crystal-indent-point) 1503 | (beginning-of-line) 1504 | (skip-syntax-forward " ") 1505 | (if (looking-at "\\.[^.]") 1506 | (+ indent crystal-indent-level) 1507 | indent)))) 1508 | 1509 | (defun crystal-beginning-of-defun (&optional arg) 1510 | "Move backward to the beginning of the current defun. 1511 | With ARG, move backward multiple defuns. Negative ARG means 1512 | move forward." 1513 | (interactive "p") 1514 | (let (case-fold-search) 1515 | (and (re-search-backward (concat "^\\s *" crystal-defun-beg-re "\\_>") 1516 | nil t (or arg 1)) 1517 | (beginning-of-line)))) 1518 | 1519 | (defun crystal-end-of-defun () 1520 | "Move point to the end of the current defun. 1521 | The defun begins at or after the point. This function is called 1522 | by `end-of-defun'." 1523 | (interactive "p") 1524 | (crystal-forward-sexp) 1525 | (let (case-fold-search) 1526 | (when (looking-back (concat "^\\s *" crystal-block-end-re)) 1527 | (forward-line 1)))) 1528 | 1529 | (defun crystal-beginning-of-indent () 1530 | "Backtrack to a line which can be used as a reference for 1531 | calculating indentation on the lines after it." 1532 | (while (and (re-search-backward crystal-indent-beg-re nil 'move) 1533 | (if (crystal-in-ppss-context-p 'anything) 1534 | t 1535 | ;; We can stop, then. 1536 | (beginning-of-line))))) 1537 | 1538 | 1539 | (defun crystal-move-to-block (n) 1540 | "Move to the beginning (N < 0) or the end (N > 0) of the 1541 | current block, a sibling block, or an outer block. Do that (abs N) times." 1542 | (back-to-indentation) 1543 | (let ((signum (if (> n 0) 1 -1)) 1544 | (backward (< n 0)) 1545 | (depth (or (nth 2 (crystal-parse-region (point) (line-end-position))) 0)) 1546 | case-fold-search 1547 | down done) 1548 | (when (looking-at crystal-block-mid-re) 1549 | (setq depth (+ depth signum))) 1550 | (when (< (* depth signum) 0) 1551 | ;; Moving end -> end or beginning -> beginning. 1552 | (setq depth 0)) 1553 | (dotimes (_ (abs n)) 1554 | (setq done nil) 1555 | (setq down (save-excursion 1556 | (back-to-indentation) 1557 | ;; There is a block start or block end keyword on this 1558 | ;; line, don't need to look for another block. 1559 | (and (re-search-forward 1560 | (if backward crystal-block-end-re 1561 | (concat "\\_<\\(" crystal-block-beg-re "\\)\\_>")) 1562 | (line-end-position) t) 1563 | (not (nth 8 (syntax-ppss)))))) 1564 | (while (and (not done) (not (if backward (bobp) (eobp)))) 1565 | (forward-line signum) 1566 | (cond 1567 | ;; Skip empty and commented out lines. 1568 | ((looking-at "^\\s *$")) 1569 | ((looking-at "^\\s *#")) 1570 | ;; Skip block comments; 1571 | ((and (not backward) (looking-at "^=begin\\>")) 1572 | (re-search-forward "^=end\\>")) 1573 | ((and backward (looking-at "^=end\\>")) 1574 | (re-search-backward "^=begin\\>")) 1575 | ;; Jump over a multiline literal. 1576 | ((crystal-in-ppss-context-p 'string) 1577 | (goto-char (nth 8 (syntax-ppss))) 1578 | (unless backward 1579 | (forward-sexp) 1580 | (when (bolp) (forward-char -1)))) ; After a heredoc. 1581 | (t 1582 | (let ((state (crystal-parse-region (point) (line-end-position)))) 1583 | (unless (car state) ; Line ends with unfinished string. 1584 | (setq depth (+ (nth 2 state) depth)))) 1585 | (cond 1586 | ;; Increased depth, we found a block. 1587 | ((> (* signum depth) 0) 1588 | (setq down t)) 1589 | ;; We're at the same depth as when we started, and we've 1590 | ;; encountered a block before. Stop. 1591 | ((and down (zerop depth)) 1592 | (setq done t)) 1593 | ;; Lower depth, means outer block, can stop now. 1594 | ((< (* signum depth) 0) 1595 | (setq done t))))))) 1596 | (back-to-indentation))) 1597 | 1598 | (defun crystal-beginning-of-block (&optional arg) 1599 | "Move backward to the beginning of the current block. 1600 | With ARG, move up multiple blocks." 1601 | (interactive "p") 1602 | (crystal-move-to-block (- (or arg 1)))) 1603 | 1604 | (defun crystal-end-of-block (&optional arg) 1605 | "Move forward to the end of the current block. 1606 | With ARG, move out of multiple blocks." 1607 | (interactive "p") 1608 | (crystal-move-to-block (or arg 1))) 1609 | 1610 | (defun crystal-forward-sexp (&optional arg) 1611 | "Move forward across one balanced expression (sexp). 1612 | With ARG, do it many times. Negative ARG means move backward." 1613 | ;; TODO: Document body 1614 | (interactive "p") 1615 | (cond 1616 | (crystal-use-smie (forward-sexp arg)) 1617 | ((and (numberp arg) (< arg 0)) (crystal-backward-sexp (- arg))) 1618 | (t 1619 | (let ((i (or arg 1))) 1620 | (condition-case nil 1621 | (while (> i 0) 1622 | (skip-syntax-forward " ") 1623 | (if (looking-at ",\\s *") (goto-char (match-end 0))) 1624 | (cond ((looking-at "\\?\\(\\\\[CM]-\\)*\\\\?\\S ") 1625 | (goto-char (match-end 0))) 1626 | ((progn 1627 | (skip-chars-forward ",.:;|&^~=!?\\+\\-\\*") 1628 | (looking-at "\\s(")) 1629 | (goto-char (scan-sexps (point) 1))) 1630 | ((and (looking-at (concat "\\<\\(" crystal-block-beg-re 1631 | "\\)\\>")) 1632 | (not (eq (char-before (point)) ?.)) 1633 | (not (eq (char-before (point)) ?:))) 1634 | (crystal-end-of-block) 1635 | (forward-word 1)) 1636 | ((looking-at "\\(\\$\\|@@?\\)?\\sw") 1637 | (while (progn 1638 | (while (progn (forward-word 1) (looking-at "_"))) 1639 | (cond ((looking-at "::") (forward-char 2) t) 1640 | ((> (skip-chars-forward ".") 0)) 1641 | ((looking-at "\\?\\|!\\(=[~=>]\\|[^~=]\\)") 1642 | (forward-char 1) nil))))) 1643 | ((let (state expr) 1644 | (while 1645 | (progn 1646 | (setq expr (or expr (crystal-expr-beg) 1647 | (looking-at "%\\sw?\\Sw\\|[\"'`/]"))) 1648 | (nth 1 (setq state (apply #'crystal-parse-partial 1649 | nil state)))) 1650 | (setq expr t) 1651 | (skip-chars-forward "<")) 1652 | (not expr)))) 1653 | (setq i (1- i))) 1654 | ((error) (forward-word 1))) 1655 | i)))) 1656 | 1657 | (defun crystal-backward-sexp (&optional arg) 1658 | "Move backward across one balanced expression (sexp). 1659 | With ARG, do it many times. Negative ARG means move forward." 1660 | ;; TODO: Document body 1661 | (interactive "p") 1662 | (cond 1663 | (crystal-use-smie (backward-sexp arg)) 1664 | ((and (numberp arg) (< arg 0)) (crystal-forward-sexp (- arg))) 1665 | (t 1666 | (let ((i (or arg 1))) 1667 | (condition-case nil 1668 | (while (> i 0) 1669 | (skip-chars-backward " \t\n,.:;|&^~=!?\\+\\-\\*") 1670 | (forward-char -1) 1671 | (cond ((looking-at "\\s)") 1672 | (goto-char (scan-sexps (1+ (point)) -1)) 1673 | (pcase (char-before) 1674 | (`?% (forward-char -1)) 1675 | ((or `?q `?Q `?w `?W `?r `?x) 1676 | (if (eq (char-before (1- (point))) ?%) 1677 | (forward-char -2)))) 1678 | nil) 1679 | ((looking-at "\\s\"\\|\\\\\\S_") 1680 | (let ((c (char-to-string (char-before (match-end 0))))) 1681 | (while (and (search-backward c) 1682 | (eq (logand (skip-chars-backward "\\") 1) 1683 | 1)))) 1684 | nil) 1685 | ((looking-at "\\s.\\|\\s\\") 1686 | (if (crystal-special-char-p) (forward-char -1))) 1687 | ((looking-at "\\s(") nil) 1688 | (t 1689 | (forward-char 1) 1690 | (while (progn (forward-word -1) 1691 | (pcase (char-before) 1692 | (`?_ t) 1693 | (`?. (forward-char -1) t) 1694 | ((or `?$ `?@) 1695 | (forward-char -1) 1696 | (and (eq (char-before) (char-after)) 1697 | (forward-char -1))) 1698 | (`?: 1699 | (forward-char -1) 1700 | (eq (char-before) :))))) 1701 | (if (looking-at crystal-block-end-re) 1702 | (crystal-beginning-of-block)) 1703 | nil)) 1704 | (setq i (1- i))) 1705 | ((error))) 1706 | i)))) 1707 | 1708 | (defun crystal-indent-exp (&optional ignored) 1709 | "Indent each line in the balanced expression following the point." 1710 | (interactive "*P") 1711 | (let ((here (point-marker)) start top column (nest t)) 1712 | (set-marker-insertion-type here t) 1713 | (unwind-protect 1714 | (progn 1715 | (beginning-of-line) 1716 | (setq start (point) top (current-indentation)) 1717 | (while (and (not (eobp)) 1718 | (progn 1719 | (setq column (crystal-calculate-indent start)) 1720 | (cond ((> column top) 1721 | (setq nest t)) 1722 | ((and (= column top) nest) 1723 | (setq nest nil) t)))) 1724 | (crystal-indent-to column) 1725 | (beginning-of-line 2))) 1726 | (goto-char here) 1727 | (set-marker here nil)))) 1728 | 1729 | (defun crystal-add-log-current-method () 1730 | "Return the current method name as a string. 1731 | This string includes all namespaces. 1732 | 1733 | For example: 1734 | 1735 | #exit 1736 | String#gsub 1737 | Net::HTTP#active? 1738 | File.open 1739 | 1740 | See `add-log-current-defun-function'." 1741 | (condition-case nil 1742 | (save-excursion 1743 | (let* ((indent 0) mname mlist 1744 | (start (point)) 1745 | (make-definition-re 1746 | (lambda (re) 1747 | (concat "^[ \t]*" re "[ \t]+" 1748 | "\\(" 1749 | ;; \\. and :: for class methods 1750 | "\\([A-Za-z_]" crystal-symbol-re "*\\|\\.\\|::" "\\)" 1751 | "+\\)"))) 1752 | (definition-re (funcall make-definition-re crystal-defun-beg-re)) 1753 | (module-re (funcall make-definition-re "\\(class\\|module\\)"))) 1754 | ;; Get the current method definition (or class/module). 1755 | (when (re-search-backward definition-re nil t) 1756 | (goto-char (match-beginning 1)) 1757 | (if (not (string-equal "def" (match-string 1))) 1758 | (setq mlist (list (match-string 2))) 1759 | ;; We're inside the method. For classes and modules, 1760 | ;; this check is skipped for performance. 1761 | (when (crystal-block-contains-point start) 1762 | (setq mname (match-string 2)))) 1763 | (setq indent (current-column)) 1764 | (beginning-of-line)) 1765 | ;; Walk up the class/module nesting. 1766 | (while (and (> indent 0) 1767 | (re-search-backward module-re nil t)) 1768 | (goto-char (match-beginning 1)) 1769 | (when (< (current-column) indent) 1770 | (setq mlist (cons (match-string 2) mlist)) 1771 | (setq indent (current-column)) 1772 | (beginning-of-line))) 1773 | ;; Process the method name. 1774 | (when mname 1775 | (let ((mn (split-string mname "\\.\\|::"))) 1776 | (if (cdr mn) 1777 | (progn 1778 | (unless (string-equal "self" (car mn)) ; def self.foo 1779 | ;; def C.foo 1780 | (let ((ml (nreverse mlist))) 1781 | ;; If the method name references one of the 1782 | ;; containing modules, drop the more nested ones. 1783 | (while ml 1784 | (if (string-equal (car ml) (car mn)) 1785 | (setq mlist (nreverse (cdr ml)) ml nil)) 1786 | (or (setq ml (cdr ml)) (nreverse mlist)))) 1787 | (if mlist 1788 | (setcdr (last mlist) (butlast mn)) 1789 | (setq mlist (butlast mn)))) 1790 | (setq mname (concat "." (car (last mn))))) 1791 | ;; See if the method is in singleton class context. 1792 | (let ((in-singleton-class 1793 | (when (re-search-forward crystal-singleton-class-re start t) 1794 | (goto-char (match-beginning 0)) 1795 | ;; FIXME: Optimize it out, too? 1796 | ;; This can be slow in a large file, but 1797 | ;; unlike class/module declaration 1798 | ;; indentations, method definitions can be 1799 | ;; intermixed with these, and may or may not 1800 | ;; be additionally indented after visibility 1801 | ;; keywords. 1802 | (crystal-block-contains-point start)))) 1803 | (setq mname (concat 1804 | (if in-singleton-class "." "#") 1805 | mname)))))) 1806 | ;; Generate the string. 1807 | (if (consp mlist) 1808 | (setq mlist (mapconcat (function identity) mlist "::"))) 1809 | (if mname 1810 | (if mlist (concat mlist mname) mname) 1811 | mlist))))) 1812 | 1813 | (defun crystal-block-contains-point (pt) 1814 | (save-excursion 1815 | (save-match-data 1816 | (crystal-forward-sexp) 1817 | (> (point) pt)))) 1818 | 1819 | (defun crystal-brace-to-do-end (orig end) 1820 | (let (beg-marker end-marker) 1821 | (goto-char end) 1822 | (when (eq (char-before) ?\}) 1823 | (delete-char -1) 1824 | (when (save-excursion 1825 | (skip-chars-backward " \t") 1826 | (not (bolp))) 1827 | (insert "\n")) 1828 | (insert "end") 1829 | (setq end-marker (point-marker)) 1830 | (when (and (not (eobp)) (eq (char-syntax (char-after)) ?w)) 1831 | (insert " ")) 1832 | (goto-char orig) 1833 | (delete-char 1) 1834 | (when (eq (char-syntax (char-before)) ?w) 1835 | (insert " ")) 1836 | (insert "do") 1837 | (setq beg-marker (point-marker)) 1838 | (when (looking-at "\\(\\s \\)*|") 1839 | (unless (match-beginning 1) 1840 | (insert " ")) 1841 | (goto-char (1+ (match-end 0))) 1842 | (search-forward "|")) 1843 | (unless (looking-at "\\s *$") 1844 | (insert "\n")) 1845 | (indent-region beg-marker end-marker) 1846 | (goto-char beg-marker) 1847 | t))) 1848 | 1849 | (defun crystal-do-end-to-brace (orig end) 1850 | (let (beg-marker end-marker beg-pos end-pos) 1851 | (goto-char (- end 3)) 1852 | (when (looking-at crystal-block-end-re) 1853 | (delete-char 3) 1854 | (setq end-marker (point-marker)) 1855 | (insert "}") 1856 | (goto-char orig) 1857 | (delete-char 2) 1858 | ;; Maybe this should be customizable, let's see if anyone asks. 1859 | (insert "{ ") 1860 | (setq beg-marker (point-marker)) 1861 | (when (looking-at "\\s +|") 1862 | (delete-char (- (match-end 0) (match-beginning 0) 1)) 1863 | (forward-char) 1864 | (re-search-forward "|" (line-end-position) t)) 1865 | (save-excursion 1866 | (skip-chars-forward " \t\n\r") 1867 | (setq beg-pos (point)) 1868 | (goto-char end-marker) 1869 | (skip-chars-backward " \t\n\r") 1870 | (setq end-pos (point))) 1871 | (when (or 1872 | (< end-pos beg-pos) 1873 | (and (= (line-number-at-pos beg-pos) (line-number-at-pos end-pos)) 1874 | (< (+ (current-column) (- end-pos beg-pos) 2) fill-column))) 1875 | (just-one-space -1) 1876 | (goto-char end-marker) 1877 | (just-one-space -1)) 1878 | (goto-char beg-marker) 1879 | t))) 1880 | 1881 | (defun crystal-toggle-block () 1882 | "Toggle block type from do-end to braces or back. 1883 | The block must begin on the current line or above it and end after the point. 1884 | If the result is do-end block, it will always be multiline." 1885 | (interactive) 1886 | (let ((start (point)) beg end) 1887 | (end-of-line) 1888 | (unless 1889 | (if (and (re-search-backward "\\(?:[^#]\\)\\({\\)\\|\\(\\_\\)") 1890 | (progn 1891 | (goto-char (or (match-beginning 1) (match-beginning 2))) 1892 | (setq beg (point)) 1893 | (save-match-data (crystal-forward-sexp)) 1894 | (setq end (point)) 1895 | (> end start))) 1896 | (if (match-beginning 1) 1897 | (crystal-brace-to-do-end beg end) 1898 | (crystal-do-end-to-brace beg end))) 1899 | (goto-char start)))) 1900 | 1901 | (defun crystal--string-region () 1902 | "Return region for string at point." 1903 | (let ((state (syntax-ppss))) 1904 | (when (memq (nth 3 state) '(?' ?\")) 1905 | (save-excursion 1906 | (goto-char (nth 8 state)) 1907 | (forward-sexp) 1908 | (list (nth 8 state) (point)))))) 1909 | 1910 | (defun crystal-string-at-point-p () 1911 | "Check if cursor is at a string or not." 1912 | (crystal--string-region)) 1913 | 1914 | (defun crystal--inverse-string-quote (string-quote) 1915 | "Get the inverse string quoting for STRING-QUOTE." 1916 | (if (equal string-quote "\"") "'" "\"")) 1917 | 1918 | (defun crystal-toggle-string-quotes () 1919 | "Toggle string literal quoting between single and double." 1920 | (interactive) 1921 | (when (crystal-string-at-point-p) 1922 | (let* ((region (crystal--string-region)) 1923 | (min (nth 0 region)) 1924 | (max (nth 1 region)) 1925 | (string-quote (crystal--inverse-string-quote (buffer-substring-no-properties min (1+ min)))) 1926 | (content 1927 | (buffer-substring-no-properties (1+ min) (1- max)))) 1928 | (setq content 1929 | (if (equal string-quote "\"") 1930 | (replace-regexp-in-string "\\\\\"" "\"" (replace-regexp-in-string "\\([^\\\\]\\)'" "\\1\\\\'" content)) 1931 | (replace-regexp-in-string "\\\\\'" "'" (replace-regexp-in-string "\\([^\\\\]\\)\"" "\\1\\\\\"" content)))) 1932 | (let ((orig-point (point))) 1933 | (delete-region min max) 1934 | (insert 1935 | (format "%s%s%s" string-quote content string-quote)) 1936 | (goto-char orig-point))))) 1937 | 1938 | (eval-and-compile 1939 | (defconst crystal-percent-literal-beg-re 1940 | "\\(%\\)[qQrswWxIi]?\\([!\"#$%&'()*+,\-./:;<=>?@[\\\]^_`{|~]\\)" 1941 | "Regexp to match the beginning of percent literal.") 1942 | 1943 | (defconst crystal-syntax-methods-before-regexp 1944 | '("gsub" "gsub!" "sub" "sub!" "scan" "split" "split!" "index" "match" 1945 | "assert_match" "Given" "Then" "When") 1946 | "Methods that can take regexp as the first argument. 1947 | It will be properly highlighted even when the call omits parens.") 1948 | 1949 | (defvar crystal-syntax-before-regexp-re 1950 | (concat 1951 | ;; Special tokens that can't be followed by a division operator. 1952 | "\\(^\\|[[=(,~;<>]" 1953 | ;; Distinguish ternary operator tokens. 1954 | ;; FIXME: They don't really have to be separated with spaces. 1955 | "\\|[?:] " 1956 | ;; Control flow keywords and operators following bol or whitespace. 1957 | "\\|\\(?:^\\|\\s \\)" 1958 | (regexp-opt '("if" "elsif" "unless" "while" "until" "when" "and" 1959 | "or" "not" "&&" "||")) 1960 | ;; Method name from the list. 1961 | "\\|\\_<" 1962 | (regexp-opt crystal-syntax-methods-before-regexp) 1963 | "\\)\\s *") 1964 | "Regexp to match text that can be followed by a regular expression.")) 1965 | 1966 | (defun crystal-syntax-propertize-function (start end) 1967 | "Syntactic keywords for Crystal mode. See `syntax-propertize-function'." 1968 | (let (case-fold-search) 1969 | (goto-char start) 1970 | (remove-text-properties start end '(crystal-expansion-match-data)) 1971 | (crystal-syntax-propertize-heredoc end) 1972 | (crystal-syntax-enclosing-percent-literal end) 1973 | (funcall 1974 | (syntax-propertize-rules 1975 | ;; $' $" $` .... are variables. 1976 | ;; ?' ?" ?` are character literals (one-char strings in 1.9+). 1977 | ("\\([?$]\\)[#\"'`]" 1978 | (1 (if (save-excursion 1979 | (nth 3 (syntax-ppss (match-beginning 0)))) 1980 | ;; Within a string, skip. 1981 | (goto-char (match-end 1)) 1982 | (string-to-syntax "\\")))) 1983 | ;; Part of symbol when at the end of a method name. 1984 | ("[!?]" 1985 | (0 (unless (save-excursion 1986 | (or (nth 8 (syntax-ppss (match-beginning 0))) 1987 | (eq (char-before) ?:) 1988 | (let (parse-sexp-lookup-properties) 1989 | (zerop (skip-syntax-backward "w_"))) 1990 | (memq (preceding-char) '(?@ ?$)))) 1991 | (string-to-syntax "_")))) 1992 | ;; Regular expressions. Start with matching unescaped slash. 1993 | ("\\(?:\\=\\|[^\\]\\)\\(?:\\\\\\\\\\)*\\(/\\)" 1994 | (1 (let ((state (save-excursion (syntax-ppss (match-beginning 1))))) 1995 | (when (or 1996 | ;; Beginning of a regexp. 1997 | (and (null (nth 8 state)) 1998 | (save-excursion 1999 | (forward-char -1) 2000 | (looking-back crystal-syntax-before-regexp-re 2001 | (point-at-bol)))) 2002 | ;; End of regexp. We don't match the whole 2003 | ;; regexp at once because it can have 2004 | ;; string interpolation inside, or span 2005 | ;; several lines. 2006 | (eq ?/ (nth 3 state))) 2007 | (string-to-syntax "\"/"))))) 2008 | ;; Expression expansions in strings. We're handling them 2009 | ;; here, so that the regexp rule never matches inside them. 2010 | (crystal-expression-expansion-re 2011 | (0 (ignore (crystal-syntax-propertize-expansion)))) 2012 | ("^=en\\(d\\)\\_>" (1 "!")) 2013 | ("^\\(=\\)begin\\_>" (1 "!")) 2014 | ;; Handle here documents. 2015 | ((concat crystal-here-doc-beg-re ".*\\(\n\\)") 2016 | (7 (unless (or (nth 8 (save-excursion 2017 | (syntax-ppss (match-beginning 0)))) 2018 | (crystal-singleton-class-p (match-beginning 0))) 2019 | (put-text-property (match-beginning 7) (match-end 7) 2020 | 'syntax-table (string-to-syntax "\"")) 2021 | (crystal-syntax-propertize-heredoc end)))) 2022 | ;; Handle percent literals: %w(), %q{}, etc. 2023 | ((concat "\\(?:^\\|[[ \t\n<+(,=]\\)" crystal-percent-literal-beg-re) 2024 | (1 (prog1 "|" (crystal-syntax-propertize-percent-literal end))))) 2025 | (point) end))) 2026 | 2027 | (defun crystal-syntax-propertize-heredoc (limit) 2028 | (let ((ppss (syntax-ppss)) 2029 | (res '())) 2030 | (when (eq ?\n (nth 3 ppss)) 2031 | (save-excursion 2032 | (goto-char (nth 8 ppss)) 2033 | (beginning-of-line) 2034 | (while (re-search-forward crystal-here-doc-beg-re 2035 | (line-end-position) t) 2036 | (unless (crystal-singleton-class-p (match-beginning 0)) 2037 | (push (concat (crystal-here-doc-end-match) "\n") res)))) 2038 | (save-excursion 2039 | ;; With multiple openers on the same line, we don't know in which 2040 | ;; part `start' is, so we have to go back to the beginning. 2041 | (when (cdr res) 2042 | (goto-char (nth 8 ppss)) 2043 | (setq res (nreverse res))) 2044 | (while (and res (re-search-forward (pop res) limit 'move)) 2045 | (if (null res) 2046 | (put-text-property (1- (point)) (point) 2047 | 'syntax-table (string-to-syntax "\"")))) 2048 | ;; End up at bol following the heredoc openers. 2049 | ;; Propertize expression expansions from this point forward. 2050 | )))) 2051 | 2052 | (defun crystal-syntax-enclosing-percent-literal (limit) 2053 | (let ((state (syntax-ppss)) 2054 | (start (point))) 2055 | ;; When already inside percent literal, re-propertize it. 2056 | (when (eq t (nth 3 state)) 2057 | (goto-char (nth 8 state)) 2058 | (when (looking-at crystal-percent-literal-beg-re) 2059 | (crystal-syntax-propertize-percent-literal limit)) 2060 | (when (< (point) start) (goto-char start))))) 2061 | 2062 | (defun crystal-syntax-propertize-percent-literal (limit) 2063 | (goto-char (match-beginning 2)) 2064 | ;; Not inside a simple string or comment. 2065 | (when (eq t (nth 3 (syntax-ppss))) 2066 | (let* ((op (char-after)) 2067 | (ops (char-to-string op)) 2068 | (cl (or (cdr (aref (syntax-table) op)) 2069 | (cdr (assoc op '((?< . ?>)))))) 2070 | parse-sexp-lookup-properties) 2071 | (save-excursion 2072 | (condition-case nil 2073 | (progn 2074 | (if cl ; Paired delimiters. 2075 | ;; Delimiter pairs of the same kind can be nested 2076 | ;; inside the literal, as long as they are balanced. 2077 | ;; Create syntax table that ignores other characters. 2078 | (with-syntax-table (make-char-table 'syntax-table nil) 2079 | (modify-syntax-entry op (concat "(" (char-to-string cl))) 2080 | (modify-syntax-entry cl (concat ")" ops)) 2081 | (modify-syntax-entry ?\\ "\\") 2082 | (save-restriction 2083 | (narrow-to-region (point) limit) 2084 | (forward-list))) ; skip to the paired character 2085 | ;; Single character delimiter. 2086 | (re-search-forward (concat "[^\\]\\(?:\\\\\\\\\\)*" 2087 | (regexp-quote ops)) limit nil)) 2088 | ;; Found the closing delimiter. 2089 | (put-text-property (1- (point)) (point) 'syntax-table 2090 | (string-to-syntax "|"))) 2091 | ;; Unclosed literal, do nothing. 2092 | ((scan-error search-failed))))))) 2093 | 2094 | (defun crystal-syntax-propertize-expansion () 2095 | ;; Save the match data to a text property, for font-locking later. 2096 | ;; Set the syntax of all double quotes and backticks to punctuation. 2097 | (let* ((beg (match-beginning 2)) 2098 | (end (match-end 2)) 2099 | (state (and beg (save-excursion (syntax-ppss beg))))) 2100 | (when (crystal-syntax-expansion-allowed-p state) 2101 | (put-text-property beg (1+ beg) 'crystal-expansion-match-data 2102 | (match-data)) 2103 | (goto-char beg) 2104 | (while (re-search-forward "[\"`]" end 'move) 2105 | (put-text-property (match-beginning 0) (match-end 0) 2106 | 'syntax-table (string-to-syntax ".")))))) 2107 | 2108 | (defun crystal-syntax-expansion-allowed-p (parse-state) 2109 | "Return non-nil if expression expansion is allowed." 2110 | (let ((term (nth 3 parse-state))) 2111 | (cond 2112 | ((memq term '(?\" ?` ?\n ?/))) 2113 | ((eq term t) 2114 | (save-match-data 2115 | (save-excursion 2116 | (goto-char (nth 8 parse-state)) 2117 | (looking-at "%\\(?:[QWrxI]\\|\\W\\)"))))))) 2118 | 2119 | (defun crystal-syntax-propertize-expansions (start end) 2120 | (save-excursion 2121 | (goto-char start) 2122 | (while (re-search-forward crystal-expression-expansion-re end 'move) 2123 | (crystal-syntax-propertize-expansion)))) 2124 | 2125 | (defun crystal-in-ppss-context-p (context &optional ppss) 2126 | (let ((ppss (or ppss (syntax-ppss (point))))) 2127 | (if (cond 2128 | ((eq context 'anything) 2129 | (or (nth 3 ppss) 2130 | (nth 4 ppss))) 2131 | ((eq context 'string) 2132 | (nth 3 ppss)) 2133 | ((eq context 'heredoc) 2134 | (eq ?\n (nth 3 ppss))) 2135 | ((eq context 'non-heredoc) 2136 | (and (crystal-in-ppss-context-p 'anything) 2137 | (not (crystal-in-ppss-context-p 'heredoc)))) 2138 | ((eq context 'comment) 2139 | (nth 4 ppss)) 2140 | (t 2141 | (error (concat 2142 | "Internal error on `crystal-in-ppss-context-p': " 2143 | "context name `" (symbol-name context) "' is unknown")))) 2144 | t))) 2145 | 2146 | (defvar crystal-font-lock-syntax-table 2147 | (let ((tbl (copy-syntax-table crystal-mode-syntax-table))) 2148 | (modify-syntax-entry ?_ "w" tbl) 2149 | tbl) 2150 | "The syntax table to use for fontifying Crystal mode buffers. 2151 | See `font-lock-syntax-table'.") 2152 | 2153 | (defconst crystal-font-lock-keyword-beg-re "\\(?:^\\|[^.@$]\\|\\.\\.\\)") 2154 | 2155 | (defconst crystal-font-lock-keywords 2156 | `(;; Functions. 2157 | ("^\\s *def\\s +\\(?:[^( \t\n.{}]*\\.\\)?\\([^( \t\n{}]+\\)" 2158 | 1 font-lock-function-name-face) 2159 | ;; Keywords. 2160 | (,(concat 2161 | crystal-font-lock-keyword-beg-re 2162 | (regexp-opt 2163 | '("->" 2164 | "alias" 2165 | "and" 2166 | "begin" 2167 | "break" 2168 | "case" 2169 | "class" 2170 | "def" 2171 | "defined?" 2172 | "do" 2173 | "elsif" 2174 | "else" 2175 | "fail" 2176 | "ensure" 2177 | "for" 2178 | "end" 2179 | "if" 2180 | "in" 2181 | "macro" 2182 | "module" 2183 | "next" 2184 | "not" 2185 | "of" 2186 | "or" 2187 | "redo" 2188 | "rescue" 2189 | "retry" 2190 | "return" 2191 | "then" 2192 | "super" 2193 | "unless" 2194 | "undef" 2195 | "until" 2196 | "when" 2197 | "while" 2198 | "yield") 2199 | 'symbols)) 2200 | (1 font-lock-keyword-face)) 2201 | ;; Core methods that have required arguments. 2202 | (,(concat 2203 | crystal-font-lock-keyword-beg-re 2204 | (regexp-opt 2205 | '( ;; built-in methods on Kernel 2206 | "at_exit" 2207 | "autoload" 2208 | "autoload?" 2209 | "catch" 2210 | "eval" 2211 | "exec" 2212 | "fork" 2213 | "format" 2214 | "lambda" 2215 | "load" 2216 | "loop" 2217 | "open" 2218 | "p" 2219 | "pp" 2220 | "print" 2221 | "printf" 2222 | "proc" 2223 | "putc" 2224 | "puts" 2225 | "require" 2226 | "require_relative" 2227 | "spawn" 2228 | "sprintf" 2229 | "syscall" 2230 | "system" 2231 | "trap" 2232 | "warn" 2233 | ;; keyword-like private methods on Module 2234 | "alias_method" 2235 | "attr" 2236 | "property" 2237 | "getter" 2238 | "setter" 2239 | "define_method" 2240 | "extend" 2241 | "include" 2242 | "module_function" 2243 | "prepend" 2244 | "private_class_method" 2245 | "private_constant" 2246 | "public_class_method" 2247 | "public_constant" 2248 | "refine" 2249 | "using") 2250 | 'symbols)) 2251 | (1 (unless (looking-at " *\\(?:[]|,.)}=]\\|$\\)") 2252 | font-lock-builtin-face))) 2253 | ;; Kernel methods that have no required arguments. 2254 | (,(concat 2255 | crystal-font-lock-keyword-beg-re 2256 | (regexp-opt 2257 | '("__callee__" 2258 | "__dir__" 2259 | "__method__" 2260 | "abort" 2261 | "at_exit" 2262 | "binding" 2263 | "block_given?" 2264 | "caller" 2265 | "exit" 2266 | "exit!" 2267 | "fail" 2268 | "private" 2269 | "protected" 2270 | "public" 2271 | "raise" 2272 | "rand" 2273 | "readline" 2274 | "readlines" 2275 | "sleep" 2276 | "srand" 2277 | "throw") 2278 | 'symbols)) 2279 | (1 font-lock-builtin-face)) 2280 | ;; Here-doc beginnings. 2281 | (,crystal-here-doc-beg-re 2282 | (0 (unless (crystal-singleton-class-p (match-beginning 0)) 2283 | 'font-lock-string-face))) 2284 | ;; Perl-ish keywords. 2285 | "\\_<\\(?:BEGIN\\|END\\)\\_>\\|^__END__$" 2286 | ;; Variables. 2287 | (,(concat crystal-font-lock-keyword-beg-re 2288 | "\\_<\\(nil\\|self\\|true\\|false\\)\\_>") 2289 | 1 font-lock-variable-name-face) 2290 | ;; Keywords that evaluate to certain values. 2291 | ("\\_<__\\(?:LINE\\|ENCODING\\|FILE\\)__\\_>" 2292 | (0 font-lock-builtin-face)) 2293 | ;; Symbols. 2294 | ("\\(^\\|[^:]\\)\\(:\\([-+~]@?\\|[/%&|^`]\\|\\*\\*?\\|<\\(<\\|=>?\\)?\\|>[>=]?\\|===?\\|=~\\|![~=]?\\|\\[\\]=?\\|@?\\(\\w\\|_\\)+\\([!?=]\\|\\b_*\\)\\|#{[^}\n\\\\]*\\(\\\\.[^}\n\\\\]*\\)*}\\)\\)" 2295 | 2 font-lock-constant-face) 2296 | ;; Special globals. 2297 | (,(concat "\\$\\(?:[:\"!@;,/\\._><\\$?~=*&`'+0-9]\\|-[0adFiIlpvw]\\|" 2298 | (regexp-opt '("LOAD_PATH" "LOADED_FEATURES" "PROGRAM_NAME" 2299 | "ERROR_INFO" "ERROR_POSITION" 2300 | "FS" "FIELD_SEPARATOR" 2301 | "OFS" "OUTPUT_FIELD_SEPARATOR" 2302 | "RS" "INPUT_RECORD_SEPARATOR" 2303 | "ORS" "OUTPUT_RECORD_SEPARATOR" 2304 | "NR" "INPUT_LINE_NUMBER" 2305 | "LAST_READ_LINE" "DEFAULT_OUTPUT" "DEFAULT_INPUT" 2306 | "PID" "PROCESS_ID" "CHILD_STATUS" 2307 | "LAST_MATCH_INFO" "IGNORECASE" 2308 | "ARGV" "MATCH" "PREMATCH" "POSTMATCH" 2309 | "LAST_PAREN_MATCH" "stdin" "stdout" "stderr" 2310 | "DEBUG" "FILENAME" "VERBOSE" "SAFE" "CLASSPATH")) 2311 | "\\_>\\)") 2312 | 0 font-lock-builtin-face) 2313 | ("\\(\\$\\|@\\|@@\\)\\(\\w\\|_\\)+" 2314 | 0 font-lock-variable-name-face) 2315 | ;; Constants. 2316 | ("\\(?:\\_<\\|::\\|\\s+:\\s+\\)\\([A-Z]+\\(\\w\\|_\\)*\\)" 2317 | 1 (unless (eq ?\( (char-after)) font-lock-type-face)) 2318 | ("\\(^\\s *\\|[\[\{\(,]\\s *\\|\\sw\\s +\\)\\(\\(\\sw\\|_\\)+\\):[^:]" 2319 | (2 font-lock-constant-face)) 2320 | ;; Conversion methods on Kernel. 2321 | (,(concat crystal-font-lock-keyword-beg-re 2322 | (regexp-opt '("Array" "Complex" "Float" "Hash" 2323 | "Integer" "Rational" "String") 'symbols)) 2324 | (1 font-lock-builtin-face)) 2325 | ;; Expression expansion. 2326 | (crystal-match-expression-expansion 2327 | 2 font-lock-variable-name-face t) 2328 | ;; Negation char. 2329 | ("\\(?:^\\|[^[:alnum:]_]\\)\\(!+\\)[^=~]" 2330 | 1 font-lock-negation-char-face) 2331 | ;; Character literals. 2332 | ;; FIXME: Support longer escape sequences. 2333 | ("\\_<\\?\\\\?\\S " 0 font-lock-string-face) 2334 | ;; macro delimiters 2335 | ("\\({%\\|{{\\|}}\\|%}\\)" 1 font-lock-preprocessor-face) 2336 | ;; Regexp options. 2337 | ("\\(?:\\s|\\|/\\)\\([imxo]+\\)" 2338 | 1 (when (save-excursion 2339 | (let ((state (syntax-ppss (match-beginning 0)))) 2340 | (and (nth 3 state) 2341 | (or (eq (char-after) ?/) 2342 | (progn 2343 | (goto-char (nth 8 state)) 2344 | (looking-at "%r")))))) 2345 | font-lock-preprocessor-face)) 2346 | ) 2347 | "Additional expressions to highlight in Crystal mode.") 2348 | 2349 | (defun crystal-match-expression-expansion (limit) 2350 | (let* ((prop 'crystal-expansion-match-data) 2351 | (pos (next-single-char-property-change (point) prop nil limit)) 2352 | value) 2353 | (when (and pos (> pos (point))) 2354 | (goto-char pos) 2355 | (or (and (setq value (get-text-property pos prop)) 2356 | (progn (set-match-data value) t)) 2357 | (crystal-match-expression-expansion limit))))) 2358 | 2359 | ;;;###autoload 2360 | (define-derived-mode crystal-mode prog-mode "Crystal" 2361 | "Major mode for editing Crystal code. 2362 | 2363 | \\{crystal-mode-map}" 2364 | (crystal-mode-variables) 2365 | 2366 | (setq-local imenu-create-index-function 'crystal-imenu-create-index) 2367 | (setq-local add-log-current-defun-function 'crystal-add-log-current-method) 2368 | (setq-local beginning-of-defun-function 'crystal-beginning-of-defun) 2369 | (setq-local end-of-defun-function 'crystal-end-of-defun) 2370 | 2371 | (add-hook 'after-save-hook 'crystal-mode-set-encoding nil 'local) 2372 | (add-hook 'electric-indent-functions 'crystal--electric-indent-p nil 'local) 2373 | 2374 | (setq-local font-lock-defaults '((crystal-font-lock-keywords) nil nil)) 2375 | (setq-local font-lock-keywords crystal-font-lock-keywords) 2376 | (setq-local font-lock-syntax-table crystal-font-lock-syntax-table) 2377 | 2378 | (setq-local syntax-propertize-function #'crystal-syntax-propertize-function)) 2379 | 2380 | ;;; Invoke crystal-mode when appropriate 2381 | 2382 | ;;;###autoload 2383 | (add-to-list 'auto-mode-alist 2384 | (cons (purecopy (concat "\\(?:\\." 2385 | "cr" 2386 | "\\)\\'")) 'crystal-mode)) 2387 | 2388 | ;;;###autoload 2389 | (dolist (name (list "crystal" "rbx" "jcrystal" "crystal1.9" "crystal1.8")) 2390 | (add-to-list 'interpreter-mode-alist (cons (purecopy name) 'crystal-mode))) 2391 | 2392 | (provide 'crystal-mode) 2393 | 2394 | ;;; crystal-mode.el ends here 2395 | --------------------------------------------------------------------------------