XPathAxisIterator.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / Xml / System / Xml / XPath / Internal / XPathAxisIterator.cs / 1 / XPathAxisIterator.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
//-----------------------------------------------------------------------------
 
namespace MS.Internal.Xml.XPath { 
    using System;
    using System.Xml; 
    using System.Xml.XPath;
    using System.Diagnostics;
    using System.Globalization;
 
    internal abstract class XPathAxisIterator: XPathNodeIterator {
        internal XPathNavigator nav; 
        internal XPathNodeType type; 
        internal string name;
        internal string uri; 
        internal int    position;
        internal bool   matchSelf;
        internal bool   first = true;
 
        public XPathAxisIterator(XPathNavigator nav, bool matchSelf) {
            this.nav = nav; 
            this.matchSelf = matchSelf; 
        }
 
        public XPathAxisIterator(XPathNavigator nav, XPathNodeType type, bool matchSelf) : this(nav, matchSelf) {
            this.type = type;
        }
 
        public XPathAxisIterator(XPathNavigator nav, string name, string namespaceURI, bool matchSelf) : this(nav, matchSelf) {
            if (name == null) throw new ArgumentNullException("name"); 
            if (namespaceURI == null) throw new ArgumentNullException("namespaceURI"); 

            this.name      = name; 
            this.uri       = namespaceURI;
        }

        public XPathAxisIterator(XPathAxisIterator it) { 
            this.nav       = it.nav.Clone();
            this.type      = it.type; 
            this.name      = it.name; 
            this.uri       = it.uri;
            this.position  = it.position; 
            this.matchSelf = it.matchSelf;
            this.first     = it.first;
        }
 
        public override XPathNavigator Current {
            get { return nav; } 
        } 

        public override int CurrentPosition { 
            get { return position; }
        }

        // Nodetype Matching - Given nodetype matches the navigator's nodetype 
        //Given nodetype is all . So it matches everything
        //Given nodetype is text - Matches text, WS, Significant WS 
        protected virtual bool Matches { 
            get {
                if (name == null) { 
                    return (
                        type == nav.NodeType      ||
                        type == XPathNodeType.All ||
                        type == XPathNodeType.Text && ( 
                            nav.NodeType == XPathNodeType.Whitespace ||
                            nav.NodeType == XPathNodeType.SignificantWhitespace 
                        ) 
                    );
                } else { 
                    return(
                        nav.NodeType == XPathNodeType.Element &&
                        (name.Length == 0 || name == nav.LocalName) &&
                        (uri == nav.NamespaceURI) 
                    );
                } 
            } 
        }
    } 
}

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

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