class/Commons.Xml.Relaxng/Commons.Xml.Relaxng/RelaxngDatatype.cs

   1 //
   2 // RelaxngDatatype.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.com>
   6 //
   7 // Copyright (c) 2004 Novell Inc.
   8 // All rights reserved
   9 //
  10
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31 using System;
  32 using System.Xml;
  33
  34 namespace Commons.Xml.Relaxng
  35 {
  36         public abstract class RelaxngDatatype
  37         {
  38                 public abstract string Name { get; }
  39                 public abstract string NamespaceURI { get; }
  40
  41                 internal virtual bool IsContextDependent {
  42                         // safe default value
  43                         get { return true; }
  44                 }
  45
  46                 public abstract object Parse (string text, XmlReader reader);
  47
  48                 public virtual bool Compare (object o1, object o2)
  49                 {
  50                         return o1 != null ? o1.Equals (o2) : o2 == null;
  51                 }
  52
  53                 public virtual bool CompareString (string s1, string s2, XmlReader reader)
  54                 {
  55                         return Compare (Parse (s1, reader), Parse (s2, reader));
  56                 }
  57
  58                 public virtual bool IsValid (string text, XmlReader reader)
  59                 {
  60                         try {
  61                                 Parse (text, reader);
  62                         } catch (Exception) {
  63                                 return false;
  64                         }
  65                         return true;
  66                 }
  67         }
  68 }