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;;;;
;;;; verify.stk -- Skribe Verification Stage
;;;;
;;;; Copyright � 2003-2004 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
;;;;
;;;;
;;;; This program is free software; you can redistribute it and/or modify
;;;; it under the terms of the GNU General Public License as published by
;;;; the Free Software Foundation; either version 2 of the License, or
;;;; (at your option) any later version.
;;;;
;;;; This program is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;;; GNU General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU General Public License
;;;; along with this program; if not, write to the Free Software
;;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
;;;; USA.
;;;;
;;;; Author: Erick Gallesio [eg@essi.fr]
;;;; Creation date: 13-Aug-2003 11:57 (eg)
;;;; Last file update: 27-Oct-2004 16:35 (eg)
;;;;
(define-module (skribe verify)
:export (verify))
(use-modules (skribe debug)
; (skribe engine)
; (skribe writer)
; (skribe runtime)
(skribe types)
(oop goops))
(define-generic verify)
;;;
;;; CHECK-REQUIRED-OPTIONS
;;;
(define (check-required-options markup writer engine)
(let ((required-options (slot-ref markup 'required-options))
(ident (slot-ref writer 'ident))
(options (slot-ref writer 'options))
(verified? (slot-ref writer 'verified?)))
(or verified?
(eq? options 'all)
(begin
(for-each (lambda (o)
(if (not (memq o options))
(skribe-error (engine-ident engine)
(format "Option unsupported: ~a, supported options: ~a" o options)
markup)))
required-options)
(slot-set! writer 'verified? #t)))))
;;;
;;; CHECK-OPTIONS
;;;
(define (check-options lopts markup engine)
;; Only keywords are checked, symbols are voluntary left unchecked. */
(with-debug 6 'check-options
(debug-item "markup=" (markup-markup markup))
(debug-item "options=" (slot-ref markup 'options))
(debug-item "lopts=" lopts)
(for-each
(lambda (o2)
(for-each
(lambda (o)
(if (and (keyword? o)
(not (eq? o :&skribe-eval-location))
(not (memq o lopts)))
(skribe-warning/ast
3
markup
'verify
(format "Engine ~a does not support markup ~a option `~a' -- ~a"
(engine-ident engine)
(markup-markup markup)
o
(markup-option markup o)))))
o2))
(slot-ref markup 'options))))
;;; ======================================================================
;;;
;;; V E R I F Y
;;;
;;; ======================================================================
;;; TOP
(define-method (verify (obj <top>) e)
obj)
;;; PAIR
(define-method (verify (obj <pair>) e)
(for-each (lambda (x) (verify x e)) obj)
obj)
;;; PROCESSOR
(define-method (verify (obj <processor>) e)
(let ((combinator (slot-ref obj 'combinator))
(engine (slot-ref obj 'engine))
(body (slot-ref obj 'body)))
(verify body (processor-get-engine combinator engine e))
obj))
;;; NODE
(define-method (verify (node <node>) e)
;; Verify body
(verify (slot-ref node 'body) e)
;; Verify options
(for-each (lambda (o) (verify (cadr o) e))
(slot-ref node 'options))
node)
;;; MARKUP
(define-method (verify (node <markup>) e)
(with-debug 5 'verify::<markup>
(debug-item "node=" (markup-markup node))
(debug-item "options=" (slot-ref node 'options))
(debug-item "e=" (engine-ident e))
(next-method)
(let ((w (lookup-markup-writer node e)))
(when (writer? w)
(check-required-options node w e)
(when (pair? (writer-options w))
(check-options (slot-ref w 'options) node e))
(let ((validate (slot-ref w 'validate)))
(when (procedure? validate)
(unless (validate node e)
(skribe-warning
1
node
(format "Node `~a' forbidden here by ~a engine"
(markup-markup node)
(engine-ident e))))))))
node))
;;; DOCUMENT
(define-method (verify (node <document>) e)
(next-method)
;; verify the engine customs
(for-each (lambda (c)
(let ((i (car c))
(a (cadr c)))
(set-car! (cdr c) (verify a e))))
(slot-ref e 'customs))
node)
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