XmlSchemaObjectTable.cs source code in C# .NET

                        Code:
                         / FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / fx / src / Xml / System / Xml / schema / XmlSchemaObjectTable.cs / 1 / XmlSchemaObjectTable.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
//-----------------------------------------------------------------------------
 
namespace System.Xml.Schema { 

    using System.Collections; 
    using System.Collections.Generic;
    using System.Diagnostics;

    ///  
    public class XmlSchemaObjectTable {
        Dictionary table = new Dictionary(); 
        List entries = new List(); 

        internal XmlSchemaObjectTable() { 
        }

        internal void Add(XmlQualifiedName name,  XmlSchemaObject value) {
            Debug.Assert(!table.ContainsKey(name), "XmlSchemaObjectTable.Add: entry already exists"); 
            table.Add(name, value);
            entries.Add(new XmlSchemaObjectEntry(name, value)); 
        } 

        internal void Insert(XmlQualifiedName name,  XmlSchemaObject value) { 
            XmlSchemaObject oldValue = null;
            if (table.TryGetValue(name, out oldValue)) {
                table[name] = value; //set new value
                Debug.Assert(oldValue != null); 
                int matchedIndex = FindIndexByValue(oldValue);
                Debug.Assert(matchedIndex >= 0); 
                //set new entry 
                Debug.Assert(entries[matchedIndex].qname == name);
                entries[matchedIndex] = new XmlSchemaObjectEntry(name, value); 
            }
            else {
                Add(name, value);
            } 

        } 
 
        internal void Replace(XmlQualifiedName name,  XmlSchemaObject value) {
            XmlSchemaObject oldValue; 
            if (table.TryGetValue(name, out oldValue)) {
                table[name] = value; //set new value
                Debug.Assert(oldValue != null);
                int matchedIndex = FindIndexByValue(oldValue); 
                Debug.Assert(entries[matchedIndex].qname == name);
                entries[matchedIndex] = new XmlSchemaObjectEntry(name, value); 
            } 
        }
 
        internal void Clear() {
            table.Clear();
            entries.Clear();
        } 

        internal void Remove(XmlQualifiedName name) { 
            XmlSchemaObject value; 
            if (table.TryGetValue(name, out value)) {
                table.Remove(name); 
                int matchedIndex = FindIndexByValue(value);
                Debug.Assert(matchedIndex >= 0);
                Debug.Assert(entries[matchedIndex].qname == name);
                entries.RemoveAt(matchedIndex); 
            }
        } 
 
        private int FindIndexByValue(XmlSchemaObject xso) {
            int index; 
            for(index = 0; index < entries.Count; index++) {
                if((object)entries[index].xso == (object)xso) {
                    return index;
                } 
            }
            return -1; 
        } 
        /// 
        public int Count { 
            get {
                Debug.Assert(table.Count == entries.Count);
                return table.Count;
            } 
        }
 
        ///  
        public bool Contains(XmlQualifiedName name) {
            return table.ContainsKey(name); 
        }

        /// 
        public XmlSchemaObject this[XmlQualifiedName name] { 
            get {
                XmlSchemaObject value; 
                if (table.TryGetValue(name, out value)) { 
                    return value;
                } 
                return null;
            }
        }
 
        /// 
        public ICollection Names { 
            get { 
                return new NamesCollection(entries, table.Count);
            } 
        }

        /// 
        public ICollection Values { 
            get {
                return new ValuesCollection(entries, table.Count); 
            } 
        }
 
        /// 
        public IDictionaryEnumerator GetEnumerator() {
            return new XSODictionaryEnumerator(this.entries, table.Count, EnumeratorType.DictionaryEntry);
        } 

        internal enum EnumeratorType { 
            Keys, 
            Values,
            DictionaryEntry, 
        }

        internal struct XmlSchemaObjectEntry {
            internal XmlQualifiedName qname; 
            internal XmlSchemaObject xso;
 
            public XmlSchemaObjectEntry(XmlQualifiedName name, XmlSchemaObject value) { 
                qname = name;
                xso = value; 
            }

            public XmlSchemaObject IsMatch(string localName, string ns) {
                if (localName == qname.Name && ns == qname.Namespace) { 
                    return xso;
                } 
                return null; 
            }
 
            public void Reset() {
                qname = null;
                xso = null;
            } 
        }
 
        internal class NamesCollection : ICollection { 
            private List entries;
            int size; 

            internal NamesCollection(List entries, int size) {
                this.entries = entries;
                this.size = size; 
            }
 
            public int Count { 
              get { return size; }
          } 

            public Object SyncRoot {
              get {
                    return ((ICollection)entries).SyncRoot; 
                }
          } 
 
            public bool IsSynchronized {
                get { 
                    return ((ICollection)entries).IsSynchronized;
                }
            }
 
            public void CopyTo(Array array, int arrayIndex) {
                if (array == null) 
                    throw new ArgumentNullException("array"); 

              if (arrayIndex < 0) 
                    throw new ArgumentOutOfRangeException("arrayIndex");

                Debug.Assert(array.Length >= size, "array is not big enough to hold all the items in the ICollection");
 
                for (int i = 0; i < size; i++) {
                    array.SetValue(entries[i].qname, arrayIndex++); 
                } 
            }
 
            public IEnumerator GetEnumerator() {
                return new XSOEnumerator(this.entries, this.size, EnumeratorType.Keys);
            }
        } 

        //ICollection for Values 
        internal class ValuesCollection : ICollection { 
            private List entries;
            int size; 

            internal ValuesCollection(List entries, int size) {
                this.entries = entries;
                this.size = size; 
            }
 
            public int Count { 
              get { return size; }
          } 

            public Object SyncRoot {
              get {
                    return ((ICollection)entries).SyncRoot; 
                }
          } 
 
            public bool IsSynchronized {
                get { 
                    return ((ICollection)entries).IsSynchronized;
                }
            }
 
            public void CopyTo(Array array, int arrayIndex) {
                if (array == null) 
                    throw new ArgumentNullException("array"); 

             if (arrayIndex < 0) 
                    throw new ArgumentOutOfRangeException("arrayIndex");

                Debug.Assert(array.Length >= size, "array is not big enough to hold all the items in the ICollection");
 
                for (int i = 0; i < size; i++) {
                    array.SetValue(entries[i].xso, arrayIndex++); 
                } 
            }
 
            public IEnumerator GetEnumerator() {
                return new XSOEnumerator(this.entries, this.size, EnumeratorType.Values);
            }
        } 

        internal class XSOEnumerator : IEnumerator { 
            private List entries; 
            private EnumeratorType enumType;
 
            protected int currentIndex;
            protected int size;
            protected XmlQualifiedName currentKey;
            protected XmlSchemaObject currentValue; 

 
            internal XSOEnumerator(List entries, int size, EnumeratorType enumType) { 
                this.entries = entries;
                this.size = size; 
                this.enumType = enumType;
                currentIndex = -1;
            }
 
            public Object Current {
                get { 
                    if (currentIndex == -1) { 
                        throw new InvalidOperationException(Res.GetString(Res.Sch_EnumNotStarted, string.Empty));
                    } 
                    if (currentIndex >= size) {
                        throw new InvalidOperationException(Res.GetString(Res.Sch_EnumFinished, string.Empty));
                    }
                    switch(enumType) { 
                        case EnumeratorType.Keys:
                            return currentKey; 
 
                        case EnumeratorType.Values:
                            return currentValue; 

                        case EnumeratorType.DictionaryEntry:
                            return new DictionaryEntry(currentKey, currentValue);
 
                        default:
                            break; 
                    } 
                    return null;
                } 
            }

            public bool MoveNext() {
                if (currentIndex >= size - 1) { 
                    currentValue = null;
                    currentKey = null; 
                    return false; 
                }
                currentIndex++; 
                currentValue = entries[currentIndex].xso;
                currentKey = entries[currentIndex].qname;
                return true;
            } 

            public void Reset() { 
                currentIndex = -1; 
                currentValue = null;
                currentKey = null; 
            }
        }

        internal class XSODictionaryEnumerator : XSOEnumerator, IDictionaryEnumerator { 

            internal XSODictionaryEnumerator(List entries, int size, EnumeratorType enumType) : base(entries, size, enumType) { 
            } 

            //IDictionaryEnumerator members 
            public DictionaryEntry Entry {
                get {
                    if (currentIndex == -1) {
                        throw new InvalidOperationException(Res.GetString(Res.Sch_EnumNotStarted, string.Empty)); 
                    }
                    if (currentIndex >= size) { 
                        throw new InvalidOperationException(Res.GetString(Res.Sch_EnumFinished, string.Empty)); 
                    }
                    return new DictionaryEntry(currentKey, currentValue); 
                }
            }

            public object Key { 
                get {
                    if (currentIndex == -1) { 
                        throw new InvalidOperationException(Res.GetString(Res.Sch_EnumNotStarted, string.Empty)); 
                    }
                    if (currentIndex >= size) { 
                        throw new InvalidOperationException(Res.GetString(Res.Sch_EnumFinished, string.Empty));
                    }
                    return currentKey;
                } 
            }
 
            public object Value { 
                get {
                    if (currentIndex == -1) { 
                        throw new InvalidOperationException(Res.GetString(Res.Sch_EnumNotStarted, string.Empty));
                    }
                    if (currentIndex >= size) {
                        throw new InvalidOperationException(Res.GetString(Res.Sch_EnumFinished, string.Empty)); 
                    }
                    return currentValue; 
                } 
            }
        } 

    }
}

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