Started a port of Skribe to Guile.

* src/guile:  New directory.  Contains the beginning of a Guile implementation
  that borrows most of its code to the STkLos implementation of Skribe.



git-archimport-id: lcourtes@laas.fr--2004-libre/skribilo--devel--1.2--patch-4

1 files changed, 161 insertions, 0 deletions

diff --git a/src/guile/skribe/verify.scm b/src/guile/skribe/verify.scm
new file mode 100644
index 0000000..7c88616
--- /dev/null
+++ b/src/guile/skribe/verify.scm
@@ -0,0 +1,161 @@
+;;;;
+;;;; 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)
+  
+