103 lines
2.7 KiB
C#
103 lines
2.7 KiB
C#
//
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// Copyright (C) 2010 Novell Inc. http://novell.com
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections.Generic;
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namespace System.Xaml
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{
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internal class XamlSubtreeReader : XamlReader
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{
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internal XamlSubtreeReader (XamlReader source)
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{
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this.source = source;
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}
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XamlReader source;
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public override bool IsEof {
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get { return started && (nest == 0 || source.IsEof); }
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}
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public override XamlMember Member {
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get { return started ? source.Member : null; }
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}
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public override NamespaceDeclaration Namespace {
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get { return started ? source.Namespace : null; }
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}
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public override XamlNodeType NodeType {
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get { return started ? source.NodeType : XamlNodeType.None; }
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}
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public override XamlSchemaContext SchemaContext {
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get { return source.SchemaContext; }
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}
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public override XamlType Type {
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get { return started ? source.Type : null; }
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}
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public override object Value {
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get { return started ? source.Value : null; }
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}
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protected override void Dispose (bool disposing)
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{
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while (nest > 0)
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if (!Read ())
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break;
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base.Dispose (disposing);
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}
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bool started;
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int nest;
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public override bool Read ()
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{
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if (started) {
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if (nest == 0) {
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source.Read ();
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return false; // already consumed
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}
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if (!source.Read ())
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return false;
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}
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else
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started = true;
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switch (source.NodeType) {
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case XamlNodeType.StartObject:
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case XamlNodeType.GetObject:
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case XamlNodeType.StartMember:
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nest++;
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break;
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case XamlNodeType.EndObject:
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case XamlNodeType.EndMember:
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nest--;
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break;
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}
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return true;
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}
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}
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}
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