mcs/class/System.Runtime.Serialization/System.Xml/XmlBinaryWriterSession.cs

   1 //
   2 // XmlBinaryWriterSession.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2005, 2007 Novell, Inc.  http://www.novell.com
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28 #if NET_2_0
  29 using System.Collections.Generic;
  30
  31 namespace System.Xml
  32 {
  33         public class XmlBinaryWriterSession
  34         {
  35                 Dictionary<int,XmlDictionaryString> dic =
  36                         new Dictionary<int,XmlDictionaryString> ();
  37
  38                 public XmlBinaryWriterSession ()
  39                 {
  40                 }
  41
  42                 public void Reset ()
  43                 {
  44                         dic.Clear ();
  45                 }
  46
  47                 // Unlike XmlDictionary, it throws an InvalidOperationException
  48                 // if the same string already exists.
  49                 public virtual bool TryAdd (XmlDictionaryString value,
  50                         out int key)
  51                 {
  52                         if (value == null)
  53                                 throw new ArgumentNullException ("value");
  54                         if (TryLookup (value, out key))
  55                                 throw new InvalidOperationException ("Argument XmlDictionaryString was already added to the writer session");
  56                         key = dic.Count;
  57                         dic.Add (key, value);
  58                         return true;
  59                 }
  60
  61                 internal bool TryLookup (XmlDictionaryString value,
  62                         out int key)
  63                 {
  64                         foreach (KeyValuePair<int,XmlDictionaryString> e in dic)
  65                                 if (e.Value.Value == value.Value) {
  66                                         key = e.Key;
  67                                         return true;
  68                                 }
  69                         key = -1;
  70                         return false;
  71                 }
  72         }
  73 }
  74 #endif