lisp/nxml/rng-dt.el

   1 ;;; rng-dt.el --- datatype library interface for RELAX NG  -*- lexical-binding:t -*-
   2
   3 ;; Copyright (C) 2003, 2007-2017 Free Software Foundation, Inc.
   4
   5 ;; Author: James Clark
   6 ;; Keywords: wp, hypermedia, languages, XML, RelaxNG
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software: you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation, either version 3 of the License, or
  13 ;; (at your option) any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  22
  23 ;;; Commentary:
  24
  25 ;;; Code:
  26
  27 (require 'rng-util)
  28
  29 (defvar rng-dt-error-reporter nil)
  30
  31 (defun rng-dt-error (string &rest objs)
  32   (if rng-dt-error-reporter
  33       (apply rng-dt-error-reporter (cons string objs))
  34     nil))
  35
  36 (defvar rng-dt-namespace-context-getter nil
  37   "A list used by datatype libraries to expand names.
  38 The car of the list is a symbol which is the name of a function.
  39 This function is applied to the cdr of the list.  The function must
  40 return a list whose car is the default namespace and whose cdr is an
  41 alist of (PREFIX . NAMESPACE) pairs, where PREFIX is a string and
  42 NAMESPACE is a symbol.  This must be dynamically bound before calling
  43 a datatype library.")
  44
  45 (defsubst rng-dt-make-value (dt str)
  46   (apply (car dt) (cons str (cdr dt))))
  47
  48 (defun rng-dt-builtin-compile (name params)
  49   (cond ((eq name 'string)
  50          (if (null params)
  51              '(t identity)
  52            (rng-dt-error "The string datatype does not take any parameters")))
  53         ((eq name 'token)
  54          (if (null params)
  55              '(t rng-collapse-space)
  56            (rng-dt-error "The token datatype does not take any parameters")))
  57         (t
  58          (rng-dt-error "There is no built-in datatype %s" name))))
  59
  60 (put (rng-make-datatypes-uri "") 'rng-dt-compile #'rng-dt-builtin-compile)
  61
  62 (provide 'rng-dt)
  63
  64 ;;; rng-dt.el ends here