2 // System.Globalization.TextElementEnumerator.cs
5 // Dick Porter (dick@ximian.com)
7 // (C) 2002 Ximian, Inc.
8 // (C) 2004 Novell, Inc.
12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
14 // Permission is hereby granted, free of charge, to any person obtaining
15 // a copy of this software and associated documentation files (the
16 // "Software"), to deal in the Software without restriction, including
17 // without limitation the rights to use, copy, modify, merge, publish,
18 // distribute, sublicense, and/or sell copies of the Software, and to
19 // permit persons to whom the Software is furnished to do so, subject to
20 // the following conditions:
22 // The above copyright notice and this permission notice shall be
23 // included in all copies or substantial portions of the Software.
25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 using System
.Collections
;
36 namespace System
.Globalization
{
39 public class TextElementEnumerator
: IEnumerator
{
41 private int elementindex
;
44 private string element
;
46 /* Hide the .ctor() */
47 internal TextElementEnumerator(string str
, int startpos
) {
49 this.startpos
= startpos
;
50 this.str
= str
.Substring (startpos
);
57 if (element
== null) {
58 throw new InvalidOperationException ();
65 public int ElementIndex
68 if (element
== null) {
69 throw new InvalidOperationException ();
72 return(elementindex
+ startpos
);
76 public string GetTextElement()
78 if (element
== null) {
79 throw new InvalidOperationException ();
85 public bool MoveNext()
87 elementindex
= index
+ 1;
89 if (elementindex
< str
.Length
) {
90 element
= StringInfo
.GetNextTextElement (str
, elementindex
);
91 index
+= element
.Length
;