;;; rng-dt.el --- datatype library interface for RELAX NG

;; Copyright (C) 2003 Free Software Foundation, Inc.

;; Author: James Clark
;; Keywords: XML, RelaxNG

;; 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

;;; Commentary:

;;; Code:

(require 'rng-util)

(defvar rng-dt-error-reporter nil)

(defun rng-dt-error (string &rest objs)
  (if rng-dt-error-reporter
      (apply rng-dt-error-reporter (cons string objs))
    nil))

(defvar rng-dt-namespace-context-getter nil
  "A list used by datatype libraries to expand names.  The car of the
list is a symbol which is the name of a function.  This function is
applied to the cdr of the list.  The function must return a list whose
car is the default namespace and whose cdr is an alist of (PREFIX
. NAMESPACE) pairs, where PREFIX is a string and NAMESPACE is a
symbol.  This must be dynamically bound before calling a datatype
library.")

(defsubst rng-dt-make-value (dt str)
  (apply (car dt) (cons str (cdr dt))))

(defun rng-dt-builtin-compile (name params)
  (cond ((eq name 'string)
	 (if (null params)
	     '(t identity)
	   (rng-dt-error "The string datatype does not take any parameters")))
	((eq name 'token)
	 (if (null params)
	     '(t rng-collapse-space)
	   (rng-dt-error "The token datatype does not take any parameters")))
	(t
	 (rng-dt-error "There is no built-in datatype %s" name))))

(put (rng-make-datatypes-uri "") 'rng-dt-compile 'rng-dt-builtin-compile)

(provide 'rng-dt)

;;; rng-dt.el ends here