Function: ebnf-iso-parser

ebnf-iso-parser is an autoloaded and byte-compiled function defined in ebnf-iso.el.gz.

Signature

(ebnf-iso-parser START)

Documentation

ISO EBNF parser.

Source Code

;; Defined in /usr/src/emacs/lisp/progmodes/ebnf-iso.el.gz
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Syntactic analyzer


;;; ISO EBNF = syntax rule, {syntax rule};

(defun ebnf-iso-parser (start)
  "ISO EBNF parser."
  (let ((total (+ (- ebnf-limit start) 1))
	(bias (1- start))
	(origin (point))
	syntax-list token rule)
    (goto-char start)
    (setq token (ebnf-iso-lex))
    (and (eq token 'end-of-input)
	 (error "Invalid ISO EBNF file format"))
    (while (not (eq token 'end-of-input))
      (ebnf-message-float
       "Parsing...%s%%"
       (/ (* (- (point) bias) 100.0) total))
      (setq token (ebnf-iso-syntax-rule token)
	    rule  (cdr token)
	    token (car token))
      (or (ebnf-add-empty-rule-list rule)
	  (setq syntax-list (cons rule syntax-list))))
    (goto-char origin)
    syntax-list))