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//------------------------------------------------------------------------------
// <copyright file="EarlyBoundInfo.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
// <owner current="true" primary="true">Microsoft</owner>
// <owner current="false">Microsoft</owner>
//------------------------------------------------------------------------------
using System.Diagnostics;
using System.Reflection;
namespace System.Xml.Xsl.Runtime {
/// <summary>
/// This class contains information about early bound function objects.
/// </summary>
internal sealed class EarlyBoundInfo {
private string namespaceUri; // Namespace Uri mapped to these early bound functions
private ConstructorInfo constrInfo; // Constructor for the early bound function object
public EarlyBoundInfo(string namespaceUri, Type ebType) {
Debug.Assert(namespaceUri != null && ebType != null);
// Get the default constructor
this.namespaceUri = namespaceUri;
this.constrInfo = ebType.GetConstructor(Type.EmptyTypes);
Debug.Assert(this.constrInfo != null, "The early bound object type " + ebType.FullName + " must have a public default constructor");
}
/// <summary>
/// Get the Namespace Uri mapped to these early bound functions.
/// </summary>
public string NamespaceUri { get { return this.namespaceUri; } }
/// <summary>
/// Return the Clr Type of the early bound object.
/// </summary>
public Type EarlyBoundType { get { return this.constrInfo.DeclaringType; } }
/// <summary>
/// Create an instance of the early bound object.
/// </summary>
public object CreateObject() { return this.constrInfo.Invoke(new object[] {}); }
/// <summary>
/// Override Equals method so that EarlyBoundInfo to implement value comparison.
/// </summary>
public override bool Equals(object obj) {
EarlyBoundInfo info = obj as EarlyBoundInfo;
if (info == null)
return false;
return this.namespaceUri == info.namespaceUri && this.constrInfo == info.constrInfo;
}
/// <summary>
/// Override GetHashCode since Equals is overriden.
/// </summary>
public override int GetHashCode() {
return this.namespaceUri.GetHashCode();
}
}
}
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