QilList.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / XmlUtils / System / Xml / Xsl / QIL / QilList.cs / 1305376 / QilList.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
//-----------------------------------------------------------------------------
using System; 
using System.Collections.Generic; 
using System.Diagnostics;
 
namespace System.Xml.Xsl.Qil {

    /// 
    /// View over a Qil operator having N children. 
    /// 
    ///  
    /// Don't construct QIL nodes directly; instead, use the QilFactory. 
    /// 
    internal class QilList : QilNode { 
        private int count;
        private QilNode[] members;

 
        //-----------------------------------------------
        // Constructor 
        //----------------------------------------------- 

        ///  
        /// Construct a new (empty) QilList
        /// 
        public QilList(QilNodeType nodeType) : base(nodeType) {
            this.members = new QilNode[4]; 
            this.xmlType = null;
        } 
 

        //----------------------------------------------- 
        // QilNode methods
        //-----------------------------------------------

        ///  
        /// Lazily create the XmlQueryType.
        ///  
        public override XmlQueryType XmlType { 
            get {
                if (this.xmlType == null) { 
                    XmlQueryType xt = XmlQueryTypeFactory.Empty;

                    if (this.count > 0) {
                        if (this.nodeType == QilNodeType.Sequence) { 
                            for (int i = 0; i < this.count; i++)
                                xt = XmlQueryTypeFactory.Sequence(xt, this.members[i].XmlType); 
 
                            Debug.Assert(!xt.IsDod, "Sequences do not preserve DocOrderDistinct");
                        } 
                        else if (this.nodeType == QilNodeType.BranchList) {
                            xt = this.members[0].XmlType;
                            for (int i = 1; i < this.count; i++)
                                xt = XmlQueryTypeFactory.Choice(xt, this.members[i].XmlType); 
                        }
                    } 
 
                    this.xmlType = xt;
                } 

                return this.xmlType;
            }
        } 

        ///  
        /// Override in order to clone the "members" array. 
        /// 
        public override QilNode ShallowClone(QilFactory f) { 
            QilList n = (QilList) MemberwiseClone();
            n.members = (QilNode[]) this.members.Clone();
            f.TraceNode(n);
            return n; 
        }
 
 
        //-----------------------------------------------
        // IList methods -- override 
        //-----------------------------------------------

        public override int Count {
            get { return this.count; } 
        }
 
        public override QilNode this[int index] { 
            get {
                if (index >= 0 && index < this.count) 
                    return this.members[index];

                throw new IndexOutOfRangeException();
            } 
            set {
                if (index >= 0 && index < this.count) 
                    this.members[index] = value; 
                else
                    throw new IndexOutOfRangeException(); 

                // Invalidate XmlType
                this.xmlType = null;
            } 
        }
 
        public override void Insert(int index, QilNode node) { 
            if (index < 0 || index > this.count)
                throw new IndexOutOfRangeException(); 

            if (this.count == this.members.Length) {
                QilNode[] membersNew = new QilNode[this.count * 2];
                Array.Copy(this.members, membersNew, this.count); 
                this.members = membersNew;
            } 
 
            if (index < this.count)
                Array.Copy(this.members, index, this.members, index + 1, this.count - index); 

            this.count++;
            this.members[index] = node;
 
            // Invalidate XmlType
            this.xmlType = null; 
        } 

        public override void RemoveAt(int index) { 
            if (index < 0 || index >= this.count)
                throw new IndexOutOfRangeException();

            this.count--; 
            if (index < this.count)
                Array.Copy(this.members, index + 1, this.members, index, this.count - index); 
 
            this.members[this.count] = null;
 
            // Invalidate XmlType
            this.xmlType = null;
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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QilList.cs source code in C# .NET

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