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Annotation of GNUtools/emacs/lisp/mim-syntax.el, revision 1.1.1.1

1.1       root        1: ;; Syntax checker for Mim (MDL).
                      2: ;; Copyright (C) 1985 Free Software Foundation, Inc.
                      3: ;; Principal author K. Shane Hartman
                      4: 
                      5: ;; This file is part of GNU Emacs.
                      6: 
                      7: ;; GNU Emacs is free software; you can redistribute it and/or modify
                      8: ;; it under the terms of the GNU General Public License as published by
                      9: ;; the Free Software Foundation; either version 1, or (at your option)
                     10: ;; any later version.
                     11: 
                     12: ;; GNU Emacs is distributed in the hope that it will be useful,
                     13: ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
                     14: ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     15: ;; GNU General Public License for more details.
                     16: 
                     17: ;; You should have received a copy of the GNU General Public License
                     18: ;; along with GNU Emacs; see the file COPYING.  If not, write to
                     19: ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
                     20: 
                     21: 
                     22: (require 'mim-mode)
                     23: 
                     24: (defun slow-syntax-check-mim ()
                     25:   "Check Mim syntax slowly.
                     26: Points out the context of the error, if the syntax is incorrect."
                     27:   (interactive)
                     28:   (message "checking syntax...")
                     29:   (let ((stop (point-max)) point-stack current last-bracket whoops last-point)
                     30:     (save-excursion
                     31:       (goto-char (point-min))
                     32:       (while (and (not whoops)
                     33:                  (re-search-forward "\\s(\\|\\s)\\|\"\\|[\\]" stop t))
                     34:        (setq current (preceding-char))
                     35:        (cond ((= current ?\")
                     36:               (condition-case nil
                     37:                   (progn (re-search-forward "[^\\]\"")
                     38:                          (setq current nil))
                     39:                 (error (setq whoops (point)))))
                     40:              ((= current ?\\)
                     41:               (condition-case nil (forward-char 1) (error nil)))
                     42:              ((= (char-syntax current) ?\))
                     43:               (if (or (not last-bracket)
                     44:                       (not (= (logand (lsh (aref (syntax-table) last-bracket) -8)
                     45:                                       ?\177)
                     46:                               current)))
                     47:                   (setq whoops (point))
                     48:                 (setq last-point (car point-stack))
                     49:                 (setq last-bracket (if last-point (char-after (1- last-point))))
                     50:                 (setq point-stack (cdr point-stack))))
                     51:              (t
                     52:               (if last-point (setq point-stack (cons last-point point-stack)))
                     53:               (setq last-point (point))
                     54:               (setq last-bracket current)))))
                     55:     (cond ((not (or whoops last-point))
                     56:           (message "Syntax correct"))
                     57:          (whoops
                     58:           (goto-char whoops)
                     59:           (cond ((equal current ?\")
                     60:                  (error "Unterminated string"))
                     61:                 ((not last-point)
                     62:                  (error "Extraneous %s" (char-to-string current)))
                     63:                 (t
                     64:                  (error "Mismatched %s with %s"
                     65:                           (save-excursion
                     66:                             (setq whoops (1- (point)))
                     67:                             (goto-char (1- last-point))
                     68:                             (buffer-substring (point)
                     69:                                               (min (progn (end-of-line) (point))
                     70:                                                    whoops)))
                     71:                           (char-to-string current)))))
                     72:          (t
                     73:           (goto-char last-point)
                     74:           (error "Unmatched %s" (char-to-string last-bracket))))))
                     75:       
                     76: (defun fast-syntax-check-mim ()
                     77:   "Checks Mim syntax quickly.
                     78: Answers correct or incorrect, cannot point out the error context."
                     79:   (interactive)
                     80:   (save-excursion
                     81:     (goto-char (point-min))
                     82:     (let (state)
                     83:       (while (and (not (eobp))
                     84:                  (equal (car (setq state (parse-partial-sexp (point) (point-max) 0)))
                     85:                         0)))
                     86:       (if (equal (car state) 0)
                     87:          (message "Syntax correct")
                     88:        (error "Syntax incorrect")))))
                     89: 
                     90: 
                     91:        

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