103 lines
2.8 KiB
C#
103 lines
2.8 KiB
C#
//-----------------------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace System.Activities.XamlIntegration
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{
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Windows.Markup;
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using System.Xaml;
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class ConcatenatingXamlReader : XamlReader
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{
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// Invariant: !isEof => readers.Current != null
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bool isEof;
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IEnumerator<XamlReader> readers;
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XamlSchemaContext schemaContext;
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public ConcatenatingXamlReader(params XamlReader[] readers)
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{
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this.readers = ((IEnumerable<XamlReader>)readers).GetEnumerator();
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if (this.readers.MoveNext())
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{
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this.schemaContext = this.readers.Current.SchemaContext;
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}
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else
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{
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this.isEof = true;
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}
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}
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public override bool IsEof
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{
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get { return this.isEof ? true : this.readers.Current.IsEof; }
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}
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public override XamlMember Member
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{
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get { return this.isEof ? null : this.readers.Current.Member; }
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}
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public override NamespaceDeclaration Namespace
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{
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get { return this.isEof ? null : this.readers.Current.Namespace; }
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}
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public override XamlNodeType NodeType
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{
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get { return this.isEof ? XamlNodeType.None : this.readers.Current.NodeType; }
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}
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public override XamlSchemaContext SchemaContext
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{
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get { return this.schemaContext; }
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}
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public override XamlType Type
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{
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get { return this.isEof ? null : this.readers.Current.Type; }
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}
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public override object Value
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{
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get { return this.isEof ? null : this.readers.Current.Value; }
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}
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protected override void Dispose(bool disposing)
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{
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if (disposing && !this.isEof)
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{
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readers.Current.Close();
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while (readers.MoveNext())
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{
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readers.Current.Close();
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}
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this.isEof = true;
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}
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base.Dispose(disposing);
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}
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public override bool Read()
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{
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if (!this.isEof)
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{
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do
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{
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if (this.readers.Current.Read())
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{
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return true;
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}
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this.readers.Current.Close();
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}
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while (this.readers.MoveNext());
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this.isEof = true;
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}
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return false;
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}
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}
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}
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