DoubleLink.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / Util / DoubleLink.cs / 1305376 / DoubleLink.cs
                        

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

/* 
 * DoubleLink 
 *
 * Copyright (c) 1998-1999, Microsoft Corporation 
 *
 */

namespace System.Web.Util { 
    using System.Runtime.Serialization.Formatters;
 
    internal class DoubleLink { 
        internal DoubleLink    _next, _prev;
        internal Object           Item; 

        internal DoubleLink() {
            _next = _prev = this;
        } 
        internal DoubleLink(Object item)  : this() {
            this.Item = item; 
        } 
        internal DoubleLink Next {get {return _next;}}
 
        internal void InsertAfter(DoubleLink after) {
            this._prev = after;
            this._next = after._next;
            after._next = this; 
            this._next._prev = this;
        } 
 
        internal void InsertBefore(DoubleLink before) {
            this._prev = before._prev; 
            this._next = before;
            before._prev = this;
            this._prev._next = this;
        } 

        internal void Remove() { 
            this._prev._next = this._next; 
            this._next._prev = this._prev;
            _next = _prev = this; 
        }

#if DBG
        internal virtual void DebugValidate() { 
            Debug.CheckValid(this._next != this || this._prev == this, "Invalid link");
        } 
 
        internal virtual string DebugDescription(string indent) {
            string desc; 

            desc = indent + "_next=" + _next + ", _prev=" + _prev + "\nItem=";
            desc += Debug.GetDescription(Item, indent + "    ");
 
            return desc;
        } 
#endif 
    }
 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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