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Annotation of 43BSD/contrib/emacs/lisp/mim-syntax.el, revision 1.1

1.1     ! root        1: ;; Syntax checker for Mim (MDL).
        !             2: ;; Copyright (C) 1985 Richard M. Stallman and K. Shane Hartman.
        !             3: ;; Bugs to shane@mit-xx (or bug-gnu-emacs@mit-prep)
        !             4: 
        !             5: ;; This file is part of GNU Emacs.
        !             6: 
        !             7: ;; GNU Emacs is distributed in the hope that it will be useful,
        !             8: ;; but WITHOUT ANY WARRANTY.  No author or distributor
        !             9: ;; accepts responsibility to anyone for the consequences of using it
        !            10: ;; or for whether it serves any particular purpose or works at all,
        !            11: ;; unless he says so in writing.  Refer to the GNU Emacs General Public
        !            12: ;; License for full details.
        !            13: 
        !            14: ;; Everyone is granted permission to copy, modify and redistribute
        !            15: ;; GNU Emacs, but only under the conditions described in the
        !            16: ;; GNU Emacs General Public License.   A copy of this license is
        !            17: ;; supposed to have been given to you along with GNU Emacs so you
        !            18: ;; can know your rights and responsibilities.  It should be in a
        !            19: ;; file named COPYING.  Among other things, the copyright notice
        !            20: ;; and this notice must be preserved on all copies.
        !            21: 
        !            22: 
        !            23: (require 'mim-mode)
        !            24: 
        !            25: (defun slow-syntax-check-mim ()
        !            26:   "Check Mim syntax slowly.
        !            27: Points out the context of the error, if the syntax is incorrect."
        !            28:   (interactive)
        !            29:   (message "checking syntax...")
        !            30:   (let ((stop (point-max)) point-stack current last-bracket whoops last-point)
        !            31:     (save-excursion
        !            32:       (goto-char (point-min))
        !            33:       (while (and (not whoops)
        !            34:                  (re-search-forward "\\s(\\|\\s)\\|\"\\|[\\]" stop t))
        !            35:        (setq current (preceding-char))
        !            36:        (cond ((= current ?\")
        !            37:               (condition-case nil
        !            38:                   (progn (re-search-forward "[^\\]\"")
        !            39:                          (setq current nil))
        !            40:                 (error (setq whoops (point)))))
        !            41:              ((= current ?\\)
        !            42:               (condition-case nil (forward-char 1) (error nil)))
        !            43:              ((= (char-syntax current) ?\))
        !            44:               (if (or (not last-bracket)
        !            45:                       (not (= (logand (lsh (aref (syntax-table) last-bracket) -8)
        !            46:                                       ?\177)
        !            47:                               current)))
        !            48:                   (setq whoops (point))
        !            49:                 (setq last-point (car point-stack))
        !            50:                 (setq last-bracket (if last-point (char-after (1- last-point))))
        !            51:                 (setq point-stack (cdr point-stack))))
        !            52:              (t
        !            53:               (if last-point (setq point-stack (cons last-point point-stack)))
        !            54:               (setq last-point (point))
        !            55:               (setq last-bracket current)))))
        !            56:     (cond ((not (or whoops last-point))
        !            57:           (message "Syntax correct"))
        !            58:          (whoops
        !            59:           (goto-char whoops)
        !            60:           (cond ((equal current ?\")
        !            61:                  (error "Unterminated string"))
        !            62:                 ((not last-point)
        !            63:                  (error "Extraneous %s" (char-to-string current)))
        !            64:                 (t
        !            65:                  (error "Mismatched %s with %s"
        !            66:                           (save-excursion
        !            67:                             (setq whoops (1- (point)))
        !            68:                             (goto-char (1- last-point))
        !            69:                             (buffer-substring (point)
        !            70:                                               (min (progn (end-of-line) (point))
        !            71:                                                    whoops)))
        !            72:                           (char-to-string current)))))
        !            73:          (t
        !            74:           (goto-char last-point)
        !            75:           (error "Unmatched %s" (char-to-string last-bracket))))))
        !            76:       
        !            77: (defun fast-syntax-check-mim ()
        !            78:   "Checks Mim syntax quickly.
        !            79: Answers correct or incorrect, cannot point out the error context."
        !            80:   (interactive)
        !            81:   (save-excursion
        !            82:     (goto-char (point-min))
        !            83:     (let (state)
        !            84:       (while (and (not (eobp))
        !            85:                  (equal (car (setq state (parse-partial-sexp (point) (point-max) 0)))
        !            86:                         0)))
        !            87:       (if (equal (car state) 0)
        !            88:          (message "Syntax correct")
        !            89:        (error "Syntax incorrect")))))
        !            90: 
        !            91: 
        !            92:        

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