[cxml-cvs] CVS cxml/klacks - cxml-cvs@common-lisp.net - mailman3.common-lisp.net

11 Feb 2007


      Update of /project/cxml/cvsroot/cxml/klacks
In directory clnet:/tmp/cvs-serv26091/klacks
Added Files:
    klacks-impl.lisp klacks.lisp package.lisp 
Log Message:
klacks parser
--- /project/cxml/cvsroot/cxml/klacks/klacks-impl.lisp	2007/02/11 18:21:21	NONE
+++ /project/cxml/cvsroot/cxml/klacks/klacks-impl.lisp	2007/02/11 18:21:21	1.1
;;; -*- Mode: Lisp; readtable: runes; -*-
;;;  (c) copyright 2007 David Lichteblau
;;; This library is free software; you can redistribute it and/or
;;; modify it under the terms of the GNU Library General Public
;;; License as published by the Free Software Foundation; either
;;; version 2 of the License, or (at your option) any later version.
;;;
;;; This library 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
;;; Library General Public License for more details.
;;;
;;; You should have received a copy of the GNU Library General Public
;;; License along with this library; if not, write to the
;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;;; Boston, MA  02111-1307  USA.
(in-package :cxml)
(defclass cxml-source (klacks:source)
    (;; args to make-source
     (context :initarg :context)
     (validate :initarg :validate)
     (root :initarg :root)
     (dtd :initarg :dtd)
     (error-culprit :initarg :error-culprit)
     ;; current state
     (continuation)
     (current-key :initform nil)
     (current-values)
     (current-attributes)
     (cdata-section-p :reader klacks:current-cdata-section-p)
     ;; extra with-source magic
     (data-behaviour :initform :DTD)
     (namespace-stack :initform (list *initial-namespace-bindings*))
     (temporary-streams :initform nil)
     (scratch-pad :initarg :scratch-pad)
     (scratch-pad-2 :initarg :scratch-pad-2)
     (scratch-pad-3 :initarg :scratch-pad-3)
     (scratch-pad-4 :initarg :scratch-pad-4)))
(defmethod klacks:close-source ((source cxml-source))
  (dolist (xstream (slot-value source 'temporary-streams))
    ;; fixme: error handling?
    (close-xstream xstream)))
(defmacro with-source ((source &rest slots) &body body)
  (let ((s (gensym)))
    `(let* ((,s ,source)
        (*ctx* (slot-value ,s 'context))
        (*validate* (slot-value ,s 'validate))
        (*data-behaviour* (slot-value source 'data-behaviour))
        (*namespace-bindings* (car (slot-value source 'namespace-stack)))
        (*scratch-pad* (slot-value source 'scratch-pad))
        (*scratch-pad-2* (slot-value source 'scratch-pad-2))
        (*scratch-pad-3* (slot-value source 'scratch-pad-3))
        (*scratch-pad-4* (slot-value source 'scratch-pad-4)))
       (handler-case
       (with-slots (,@slots) ,s
         ,@body)
     (runes-encoding:encoding-error (c)
       (wf-error (slot-value ,s 'error-culprit) "~A" c))))))
(defun fill-source (source)
  (with-slots (current-key current-values continuation) source
    (unless current-key
      (setf current-key :bogus)
      (setf continuation (funcall continuation))
      (assert (not (eq current-key :bogus))))))
(defmethod klacks:peek ((source cxml-source))
  (with-source (source current-key current-values)
    (fill-source source)
    (apply #'values current-key current-values)))
(defmethod klacks:peek-value ((source cxml-source))
  (with-source (source current-key current-values)
    (fill-source source)
    (apply #'values current-values)))
(defmethod klacks:consume ((source cxml-source))
  (with-source (source current-key current-values)
    (fill-source source)
    (multiple-value-prog1
    (apply #'values current-key current-values)
      (setf current-key nil))))
(defmethod klacks:map-attributes (fn (source cxml-source))
  (dolist (a (slot-value source 'current-attributes))
    (funcall fn
         (sax:attribute-namespace-uri a)
         (sax:attribute-local-name a)
         (sax:attribute-qname a)
         (sax:attribute-value a)
         (sax:attribute-specified-p a))))
(defmethod klacks:list-attributes ((source cxml-source))
  (slot-value source 'current-attributes))
(defun make-source
    (input &rest args
     &key validate dtd root entity-resolver disallow-internal-subset
      pathname)
  (declare (ignore validate dtd root entity-resolver disallow-internal-subset))
  (etypecase input
    (xstream
      (let ((*ctx* nil))
    (let ((zstream (make-zstream :input-stack (list input))))
      (peek-rune input)
      (with-scratch-pads ()
        (apply #'%make-source
    	   zstream
    	   (loop
    	       for (name value) on args by #'cddr
    	       unless (eq name :pathname)
    	       append (list name value)))))))
    (stream
      (let ((xstream (make-xstream input)))
    (setf (xstream-name xstream)
          (make-stream-name
           :entity-name "main document"
           :entity-kind :main
           :uri (pathname-to-uri
    	     (merge-pathnames (or pathname (pathname input))))))
    (apply #'make-source xstream args)))
    (pathname
      (let* ((xstream
          (make-xstream (open input :element-type '(unsigned-byte 8))))
         (source (apply #'make-source
    		    xstream
    		    :pathname input
    		    args)))
    (push xstream (slot-value source 'temporary-streams))
    source))
    (rod
      (let ((xstream (string->xstream input)))
    (setf (xstream-name xstream)
          (make-stream-name
           :entity-name "main document"
           :entity-kind :main
           :uri nil))
    (apply #'make-source xstream args)))))
(defun %make-source
    (input &key validate dtd root entity-resolver disallow-internal-subset
    	error-culprit)
  ;; check types of user-supplied arguments for better error messages:
  (check-type validate boolean)
  (check-type dtd (or null extid))
  (check-type root (or null rod))
  (check-type entity-resolver (or null function symbol))
  (check-type disallow-internal-subset boolean)
  (let* ((context
      (make-context :handler nil
    		:main-zstream input
    		:entity-resolver entity-resolver
    		:disallow-internal-subset disallow-internal-subset))
     (source
      (make-instance 'cxml-source
        :context context
        :validate validate
        :dtd dtd
        :root root
        :error-culprit error-culprit
        :scratch-pad *scratch-pad*
        :scratch-pad-2 *scratch-pad-2*
        :scratch-pad-3 *scratch-pad-3*
        :scratch-pad-4 *scratch-pad-4*)))
    (setf (slot-value source 'continuation)
      (lambda () (klacks/xmldecl source input)))
    source))
(defun klacks/xmldecl (source input)
  (with-source (source current-key current-values)
    (let ((hd (p/xmldecl input)))
      (setf current-key :start-document)
      (setf current-values
        (when hd
          (list (xml-header-version hd)
    	    (xml-header-encoding hd)
    	    (xml-header-standalone-p hd))))
      (lambda ()
    (klacks/misc*-2 source input
    		(lambda ()
    		  (klacks/doctype source input)))))))
(defun klacks/misc*-2 (source input successor)
  (with-source (source current-key current-values)
    (multiple-value-bind (cat sem) (peek-token input)
      (case cat
    (:COMMENT
      (setf current-key :comment)
      (setf current-values (list sem))
      (consume-token input)
      (lambda () (klacks/misc*-2 source input successor)))
    (:PI
      (setf current-key :processing-instruction)
      (setf current-values (list (car sem) (cdr sem)))
      (consume-token input)
      (lambda () (klacks/misc*-2 source input successor)))
    (:S
      (consume-token input)
      (klacks/misc*-2 source input successor))
    (t
      (funcall successor))))))
(defun klacks/doctype (source input)
  (with-source (source current-key current-values validate dtd)
    (let ((cont (lambda () (klacks/finish-doctype source input)))
      ignoreme name extid)
      (prog1
      (cond
        ((eq (peek-token input) :<!DOCTYPE)
          (setf (values ignoreme name extid)
    	    (p/doctype-decl input dtd))
          (lambda () (klacks/misc*-2 source input cont)))
        (dtd
          (setf (values ignoreme name extid)
    	    (synthesize-doctype dtd input))
          cont)
        ((and validate (not dtd))
          (validity-error "invalid document: no doctype"))
        (t
          (return-from klacks/doctype
    	(funcall cont))))
    (setf current-key :dtd)
    (setf current-values
          (list name (extid-public extid) (extid-system extid)))))))
(defun klacks/finish-doctype (source input)
  (with-source (source current-key current-values root data-behaviour)
    (ensure-dtd)
    (when root
      (setf (model-stack *ctx*) (list (make-root-model root))))
    (setf data-behaviour :DOC)
    (setf *data-behaviour* :DOC)
    (fix-seen-< input)
    (let* ((final
        (lambda ()
          (klacks/eof source input)))
       (next
        (lambda ()
          (setf data-behaviour :DTD)
          (setf *data-behaviour* :DTD)
          (klacks/misc*-2 source input final))))
      (klacks/element source input next))))
(defun klacks/eof (source input)
  (with-source (source current-key current-values)
    (p/eof input)
    (setf current-key :end-document)
    (setf current-values nil)
    (lambda () (klacks/nil source))))
(defun klacks/nil (source)
  (with-source (source current-key current-values)
    (setf current-key nil)
    (setf current-values nil)
    (labels ((klacks/done () #'klacks/done))
      #'klacks/done)))
(defun klacks/element (source input cont)
  (with-source (source current-key current-values current-attributes)
    (multiple-value-bind (cat n-b new-b uri lname qname attrs) (p/sztag input)
      (declare (ignore new-b))
      (setf current-key :start-element)
      (setf current-values (list uri lname qname))
      (setf current-attributes attrs)
      (if (eq cat :stag)
      (lambda ()
        (klacks/element-2 source input n-b cont))
      (lambda ()
        (klacks/ztag source cont))))))
(defun klacks/ztag (source cont)
  (with-source (source current-key current-values current-attributes)
    (setf current-key :end-element)
    (setf current-attributes nil)
    ;; fixme: (undeclare-namespaces new-b)
    (validate-end-element *ctx* (third current-values))
    cont))
(defun klacks/element-2 (source input n-b cont)
  (with-source (source
    	current-key current-values current-attributes namespace-stack)
    (let ((values* current-values))
      (setf current-attributes nil)
      (push n-b namespace-stack)
      (let ((finish
         (lambda ()
           (pop namespace-stack)
           (klacks/element-3 source input values* cont))))
    (klacks/content source input finish)))))
(defun klacks/element-3 (source input tag-values cont)
  (with-source (source current-key current-values current-attributes)
    (setf current-key :end-element)
    (setf current-values tag-values)
    (let ((qname (third tag-values)))
      (p/etag input qname)
      ;; fixme: (undeclare-namespaces new-b)
      (validate-end-element *ctx* qname))
    cont))
(defun klacks/content (source input cont)
  (with-source (source current-key current-values cdata-section-p)
    (let ((recurse (lambda () (klacks/content source input cont))))
      (multiple-value-bind (cat sem) (peek-token input)
    (case cat
      ((:stag :ztag)
        (klacks/element source input recurse))
      ((:CDATA)
        (process-characters input sem)
        (setf current-key :characters)
        (setf current-values (list sem))
        (setf cdata-section-p nil)
        recurse)
      ((:ENTITY-REF)
        (let ((name sem))
          (consume-token input)
          (klacks/entity-reference source input name recurse)))
      ((:<![)
        (setf current-key :characters)
        (setf current-values (list (process-cdata-section input sem)))
        (setf cdata-section-p t)
        recurse)
      ((:PI)
        (setf current-key :processing-instruction)
        (setf current-values (list (car sem) (cdr sem)))
        (consume-token input)
        recurse)
      ((:COMMENT)
        (setf current-key :comment)
        (setf current-values (list sem))
        (consume-token input)
        recurse)
      (otherwise
        (funcall cont)))))))
(defun klacks/entity-reference (source zstream name cont)
  (assert (not (zstream-token-category zstream)))
  (with-source (source temporary-streams)
    (let ((new-xstream (entity->xstream zstream name :general nil)))
      (push new-xstream temporary-streams)
      (push :stop (zstream-input-stack zstream))
      (zstream-push new-xstream zstream)
      (let ((next
         (lambda ()
           (klacks/entity-reference-2 source zstream new-xstream cont))))
    (etypecase (checked-get-entdef name :general)
      (internal-entdef
        (klacks/content source zstream next))
      (external-entdef
        (klacks/ext-parsed-ent source zstream next)))))))
(defun klacks/entity-reference-2 (source zstream new-xstream cont)
  (with-source (source temporary-streams)
    (unless (eq (peek-token zstream) :eof)
      (wf-error zstream "Trailing garbage. - ~S" (peek-token zstream)))
    (assert (eq (peek-token zstream) :eof))
    (assert (eq (pop (zstream-input-stack zstream)) new-xstream))
    (assert (eq (pop (zstream-input-stack zstream)) :stop))
    (setf (zstream-token-category zstream) nil)
    (setf temporary-streams (remove new-xstream temporary-streams))
    (close-xstream new-xstream)
    (funcall cont)))
(defun klacks/ext-parsed-ent (source input cont)
  (with-source (source)
    (when (eq (peek-token input) :xml-decl)
      (let ((hd (parse-text-decl (cdr (nth-value 1 (peek-token input))))))
    (setup-encoding input hd))
      (consume-token input))
    (set-full-speed input)
    (klacks/content source input cont)))
#+(or)
(trace CXML::KLACKS/DOCTYPE 
       CXML::KLACKS/EXT-PARSED-ENT 
       CXML::KLACKS/MISC*-2 
       CXML::KLACKS/ENTITY-REFERENCE 
       CXML::KLACKS/ENTITY-REFERENCE-2 
       CXML::KLACKS/ELEMENT 
       CXML::KLACKS/ZTAG 
       CXML::KLACKS/XMLDECL 
       CXML::KLACKS/FINISH-DOCTYPE 
       CXML::KLACKS/ELEMENT-3 
       CXML::KLACKS/EOF 
       CXML::KLACKS/ELEMENT-2 
       CXML::KLACKS/CONTENT )
--- /project/cxml/cvsroot/cxml/klacks/klacks.lisp	2007/02/11 18:21:21	NONE
+++ /project/cxml/cvsroot/cxml/klacks/klacks.lisp	2007/02/11 18:21:21	1.1
;;; -*- Mode: Lisp; readtable: runes; -*-
;;;  (c) copyright 2007 David Lichteblau
;;; This library is free software; you can redistribute it and/or
;;; modify it under the terms of the GNU Library General Public
;;; License as published by the Free Software Foundation; either
;;; version 2 of the License, or (at your option) any later version.
;;;
;;; This library is distributed in the hope that it will be useful,
[86 lines skipped]
--- /project/cxml/cvsroot/cxml/klacks/package.lisp	2007/02/11 18:21:21	NONE
+++ /project/cxml/cvsroot/cxml/klacks/package.lisp	2007/02/11 18:21:21	1.1
[124 lines skipped]