UniqueCodeIdentifierScope.cs source code in C# .NET

                        Code:
                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / ServiceModel / System / ServiceModel / Description / UniqueCodeIdentifierScope.cs / 1 / UniqueCodeIdentifierScope.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------

namespace System.ServiceModel.Description 
{
    using System; 
    using System.Collections.Generic; 
    using System.Globalization;
    using System.Text; 
    using System.CodeDom;

    class UniqueCodeIdentifierScope
    { 
        const int MaxIdentifierLength = 511;
 
        SortedList names = null; 

        // assumes identifier is valid 
        protected virtual void AddIdentifier(string identifier)
        {
            if (names == null)
                names = new SortedList(StringComparer.OrdinalIgnoreCase); 

            names.Add(identifier, identifier); 
        } 

        // assumes identifier is valid 
        public void AddReserved(string identifier)
        {
            DiagnosticUtility.DebugAssert(IsUnique(identifier), "");
 
            AddIdentifier(identifier);
        } 
 
        // validates name before trying to add
        public string AddUnique(string name, string defaultName) 
        {
            string validIdentifier = MakeValid(name, defaultName);

            string uniqueIdentifier = validIdentifier; 
            int i = 1;
 
            while (!IsUnique(uniqueIdentifier)) 
            {
                uniqueIdentifier = validIdentifier + i++.ToString(CultureInfo.InvariantCulture); 
            }

            AddIdentifier(uniqueIdentifier);
 
            return uniqueIdentifier;
        } 
 
        // assumes identifier is valid
        public virtual bool IsUnique(string identifier) 
        {
            return names == null || !names.ContainsKey(identifier);
        }
 
        static bool IsValidStart(char c)
        { 
            return (Char.GetUnicodeCategory(c) != UnicodeCategory.DecimalDigitNumber); 
        }
 
        static bool IsValid(char c)
        {
            UnicodeCategory uc = Char.GetUnicodeCategory(c);
 
            // each char must be Lu, Ll, Lt, Lm, Lo, Nd, Mn, Mc, Pc
 
            switch (uc) 
            {
                case UnicodeCategory.UppercaseLetter:        // Lu 
                case UnicodeCategory.LowercaseLetter:        // Ll
                case UnicodeCategory.TitlecaseLetter:        // Lt
                case UnicodeCategory.ModifierLetter:         // Lm
                case UnicodeCategory.OtherLetter:            // Lo 
                case UnicodeCategory.DecimalDigitNumber:     // Nd
                case UnicodeCategory.NonSpacingMark:         // Mn 
                case UnicodeCategory.SpacingCombiningMark:   // Mc 
                case UnicodeCategory.ConnectorPunctuation:   // Pc
                    return true; 
                default:
                    return false;
            }
        } 

        public static string MakeValid(string identifier, string defaultIdentifier) 
        { 
            if (String.IsNullOrEmpty(identifier))
                return defaultIdentifier; 

            if (identifier.Length <= MaxIdentifierLength && System.CodeDom.Compiler.CodeGenerator.IsValidLanguageIndependentIdentifier(identifier))
                return identifier;
 
            StringBuilder builder = new StringBuilder();
            for (int i = 0; i < identifier.Length && builder.Length < MaxIdentifierLength; i++) 
            { 
                char c = identifier[i];
                if (IsValid(c)) 
                {
                    if (builder.Length == 0)
                    {
                        // check for valid start char 
                        if (!IsValidStart(c))
                            builder.Append('_'); 
                    } 
                    builder.Append(c);
                } 
            }
            if (builder.Length == 0)
                return defaultIdentifier;
 
            return builder.ToString();
        } 
    } 

    class UniqueCodeNamespaceScope : UniqueCodeIdentifierScope 
    {
        CodeNamespace codeNamespace;

        // possible direction: add an option to cache for multi-use cases 
        public UniqueCodeNamespaceScope(CodeNamespace codeNamespace)
        { 
            this.codeNamespace = codeNamespace; 
        }
 
        public CodeNamespace CodeNamespace
        {
            get { return this.codeNamespace; }
        } 

        protected override void AddIdentifier(string identifier) 
        { 
        }
 
        public CodeTypeReference AddUnique(CodeTypeDeclaration codeType, string name, string defaultName)
        {
            codeType.Name = base.AddUnique(name, defaultName);
            codeNamespace.Types.Add(codeType); 
            return ServiceContractGenerator.NamespaceHelper.GetCodeTypeReference(this.codeNamespace, codeType);
        } 
 
        public override bool IsUnique(string identifier)
        { 
            return !NamespaceContainsType(identifier);
        }

        bool NamespaceContainsType(string typeName) 
        {
            foreach (CodeTypeDeclaration codeType in codeNamespace.Types) 
            { 
                if (String.Compare(codeType.Name, typeName, StringComparison.OrdinalIgnoreCase) == 0)
                { 
                    return true;
                }
            }
 
            return false;
        } 
    } 
}

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

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