ServiceModelDictionary.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / ServiceModel / System / ServiceModel / ServiceModelDictionary.cs / 1 / ServiceModelDictionary.cs
                        

                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------
namespace System.ServiceModel
{ 
    using System.Xml;
    using System.Collections.Generic; 
 
    class ServiceModelDictionary : IXmlDictionary
    { 
        static public readonly ServiceModelDictionary Version1 = new ServiceModelDictionary(new ServiceModelStringsVersion1());
        ServiceModelStrings strings;
        int count;
        XmlDictionaryString[] dictionaryStrings1; 
        XmlDictionaryString[] dictionaryStrings2;
        Dictionary dictionary; 
        XmlDictionaryString[] versionedDictionaryStrings; 

        public ServiceModelDictionary(ServiceModelStrings strings) 
        {
            this.strings = strings;
            this.count = strings.Count;
        } 

        static public ServiceModelDictionary CurrentVersion 
        { 
            get
            { 
                return Version1;
            }
        }
 
        public XmlDictionaryString CreateString(string value, int key)
        { 
            return new XmlDictionaryString(this, value, key); 
        }
 
        public bool TryLookup(string key, out XmlDictionaryString value)
        {
            if (key == null)
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("key")); 
            if (this.dictionary == null)
            { 
                Dictionary dictionary = new Dictionary(count); 
                for (int i = 0; i < count; i++)
                    dictionary.Add(strings[i], i); 
                this.dictionary = dictionary;
            }
            int id;
            if (this.dictionary.TryGetValue(key, out id)) 
                return TryLookup(id, out value);
            value = null; 
            return false; 
        }
 
        public bool TryLookup(int key, out XmlDictionaryString value)
        {
            const int keyThreshold = 32;
            if (key < 0 || key >= count) 
            {
                value = null; 
                return false; 
            }
            XmlDictionaryString s; 
            if (key < keyThreshold)
            {
                if (dictionaryStrings1 == null)
                    dictionaryStrings1 = new XmlDictionaryString[keyThreshold]; 
                s = dictionaryStrings1[key];
                if (s == null) 
                { 
                    s = CreateString(strings[key], key);
                    dictionaryStrings1[key] = s; 
                }
            }
            else
            { 
                if (dictionaryStrings2 == null)
                    dictionaryStrings2 = new XmlDictionaryString[count - keyThreshold]; 
                s = dictionaryStrings2[key - keyThreshold]; 
                if (s == null)
                { 
                    s = CreateString(strings[key], key);
                    dictionaryStrings2[key - keyThreshold] = s;
                }
            } 
            value = s;
            return true; 
        } 

        public bool TryLookup(XmlDictionaryString key, out XmlDictionaryString value) 
        {
            if (key == null)
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("key"));
            if (key.Dictionary == this) 
            {
                value = key; 
                return true; 
            }
            if (key.Dictionary == CurrentVersion) 
            {
                if (versionedDictionaryStrings == null)
                    versionedDictionaryStrings = new XmlDictionaryString[CurrentVersion.count];
                XmlDictionaryString s = versionedDictionaryStrings[key.Key]; 
                if (s == null)
                { 
                    if (!TryLookup(key.Value, out s)) 
                    {
                        value = null; 
                        return false;
                    }
                    versionedDictionaryStrings[key.Key] = s;
                } 
                value = s;
                return true; 
            } 
            value = null;
            return false; 
        }
    }
}

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

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