XmlQualifiedName.cs source code in C# .NET

                        Code:
                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / Xml / System / Xml / XmlQualifiedName.cs / 1 / XmlQualifiedName.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
//-----------------------------------------------------------------------------
 
namespace System.Xml { 
    using System.Collections;
    using System.Diagnostics; 

    /// 
    /// 
    ///    [To be supplied.] 
    /// 
    [Serializable] 
    public class XmlQualifiedName { 
        string name;
        string ns; 

        [NonSerialized]
        Int32  hash;
 
        /// 
        ///  
        ///    [To be supplied.] 
        /// 
        public static readonly XmlQualifiedName Empty = new XmlQualifiedName(string.Empty); 

        /// 
        /// 
        ///    [To be supplied.] 
        /// 
        public XmlQualifiedName() : this(string.Empty, string.Empty) {} 
 
        /// 
        ///  
        ///    [To be supplied.]
        /// 
        public XmlQualifiedName(string name) : this(name, string.Empty) {}
 
        /// 
        ///  
        ///    [To be supplied.] 
        /// 
        public XmlQualifiedName(string name, string ns) { 
            this.ns   = ns   == null ? string.Empty : ns;
            this.name = name == null ? string.Empty : name;
        }
 
        /// 
        ///  
        ///    [To be supplied.] 
        /// 
        public string Namespace { 
            get { return ns; }
        }

        ///  
        /// 
        ///    [To be supplied.] 
        ///  
        public string Name {
            get { return name; } 
        }

        /// 
        ///  
        ///    [To be supplied.]
        ///  
        public override int GetHashCode() { 
            if(hash == 0) {
                hash = Name.GetHashCode() /*+ Namespace.GetHashCode()*/; // for perf reasons we are not taking ns's hashcode. 
            }
            return hash;
        }
 
        /// 
        ///  
        ///    [To be supplied.] 
        /// 
        public bool IsEmpty { 
            get { return Name.Length == 0 && Namespace.Length == 0; }
        }

        ///  
        /// 
        ///    [To be supplied.] 
        ///  
        public override string ToString() {
            return Namespace.Length == 0 ? Name : string.Concat(Namespace, ":" , Name); 
        }

        /// 
        ///  
        ///    [To be supplied.]
        ///  
        public override bool Equals(object other) { 
            XmlQualifiedName qname;
 
            if ((object) this == other) {
                return true;
            }
 
            qname = other as XmlQualifiedName;
            if (qname != null) { 
                return (Name == qname.Name && Namespace == qname.Namespace); 
            }
            return false; 
        }

        /// 
        ///  
        ///    [To be supplied.]
        ///  
        public static bool operator ==(XmlQualifiedName a, XmlQualifiedName b) { 
            if ((object) a == (object) b)
                return true; 

            if ((object) a == null || (object) b == null)
                return false;
 
            return (a.Name == b.Name && a.Namespace == b.Namespace);
        } 
 
        /// 
        ///  
        ///    [To be supplied.]
        /// 
        public static bool operator !=(XmlQualifiedName a, XmlQualifiedName b) {
            return !(a == b); 
        }
 
        ///  
        /// 
        ///    [To be supplied.] 
        /// 
        public static string ToString(string name, string ns) {
            return ns == null || ns.Length == 0 ? name : ns + ":" + name;
        } 

        // --------- Some useful internal stuff ----------------- 
        internal void Init(string name, string ns) { 
            Debug.Assert(name != null && ns != null);
            this.name = name; 
            this.ns = ns;
            this.hash = 0;
        }
 
        internal void SetNamespace(string ns) {
            Debug.Assert(ns != null); 
            this.ns = ns; //Not changing hash since ns is not used to compute hashcode 
        }
 
        internal void Verify() {
            XmlConvert.VerifyNCName(name);
            if (ns.Length != 0) {
                XmlConvert.ToUri(ns); 
            }
        } 
 
        internal void Atomize(XmlNameTable nameTable) {
            Debug.Assert(name != null); 
            name = nameTable.Add(name);
            ns = nameTable.Add(ns);
        }
 
        internal static XmlQualifiedName Parse(string s, IXmlNamespaceResolver nsmgr, out string prefix) {
            string localName; 
            ValidateNames.ParseQNameThrow(s, out prefix, out localName); 

            string uri = nsmgr.LookupNamespace(prefix); 
            if (uri == null) {
                if (prefix.Length != 0) {
                    throw new XmlException(Res.Xml_UnknownNs, prefix);
                } 
                else { //Re-map namespace of empty prefix to string.Empty when there is no default namespace declared
                    uri = string.Empty; 
                } 
            }
            return new XmlQualifiedName(localName, uri); 
        }

        internal XmlQualifiedName Clone() {
            return (XmlQualifiedName)MemberwiseClone(); 
        }
 
        internal static int Compare(XmlQualifiedName a, XmlQualifiedName b) { 
            if (null == a) {
                return (null == b) ? 0 : -1; 
            }
            if (null == b) {
                return 1;
            } 
            int i = String.CompareOrdinal(a.Namespace, b.Namespace);
            if (i == 0) { 
                i = String.CompareOrdinal(a.Name, b.Name); 
            }
            return i; 
        }
    }
}
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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XmlQualifiedName.cs source code in C# .NET

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