UriTemplateEquivalenceComparer.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / NetFx35 / System.ServiceModel.Web / System / UriTemplateEquivalenceComparer.cs / 2 / UriTemplateEquivalenceComparer.cs
                        

                        
                            //---------------------------------------------------------------- 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//---------------------------------------------------------------

#pragma warning disable 1634, 1691 // Stops compiler from warning about unknown warnings (for Presharp) 

namespace System 
{ 
    using System.Collections.Generic;
    using System.ServiceModel; 

    public class UriTemplateEquivalenceComparer : IEqualityComparer
    {
        static UriTemplateEquivalenceComparer instance; 
        internal static UriTemplateEquivalenceComparer Instance
        { 
            get 
            {
                if (instance == null) 
                {
                    // lock-free, fine if we allocate more than one
                    instance = new UriTemplateEquivalenceComparer();
                } 
                return instance;
            } 
        } 

        public bool Equals(UriTemplate x, UriTemplate y) 
        {
            if (x == null)
            {
                return y == null; 
            }
            return x.IsEquivalentTo(y); 
        } 
        public int GetHashCode(UriTemplate obj)
        { 
            if (obj == null)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("obj");
            } 
#pragma warning disable 56506 // obj.xxx is never null
            // prefer final literal segment (common literal prefixes are common in some scenarios) 
            for (int i = obj.segments.Count - 1; i >= 0; --i) 
            {
                if (obj.segments[i].Nature == UriTemplatePartType.Literal) 
                {
                    return obj.segments[i].GetHashCode();
                }
            } 
            return obj.segments.Count + obj.queries.Count;
#pragma warning restore 56506 
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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