SecurityAttributeGenerationHelper.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 / Channels / SecurityAttributeGenerationHelper.cs / 1 / SecurityAttributeGenerationHelper.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------
namespace System.ServiceModel.Channels
{ 
    using System.CodeDom;
    using System.Xml; 
 
    static class SecurityAttributeGenerationHelper
    { 
        public static CodeAttributeDeclaration FindOrCreateAttributeDeclaration(CodeAttributeDeclarationCollection attributes)
            where T : Attribute
        {
            if (attributes == null) 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("attributes");
 
            CodeTypeReference refT = new CodeTypeReference(typeof(T)); 

            foreach (CodeAttributeDeclaration attribute in attributes) 
                if (attribute.AttributeType.BaseType == refT.BaseType)
                    return attribute;

            CodeAttributeDeclaration result = new CodeAttributeDeclaration(refT); 
            attributes.Add(result);
 
            return result; 
        }
 
        public static void CreateOrOverridePropertyDeclaration(CodeAttributeDeclaration attribute, string propertyName, V value)
        {
            if (attribute == null)
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("attribute"); 
            if (propertyName == null)
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("propertyName"); 
 
            CodeExpression newValue;
 
            if (value is TimeSpan)
                newValue = new CodeObjectCreateExpression(
                    typeof(TimeSpan),
                    new CodePrimitiveExpression(((TimeSpan)(object)value).Ticks)); 
            else if (value is Enum)
                newValue = new CodeFieldReferenceExpression( 
                    new CodeTypeReferenceExpression(typeof(V)), 
                    ((object)value).ToString());
            else 
                newValue = new CodePrimitiveExpression((object)value);

            CodeAttributeArgument attributeProperty = TryGetAttributeProperty(attribute, propertyName);
 
            if (attributeProperty == null)
            { 
                attributeProperty = new CodeAttributeArgument(propertyName, newValue); 
                attribute.Arguments.Add(attributeProperty);
            } 
            else
                attributeProperty.Value = newValue;
        }
 
        public static CodeAttributeArgument TryGetAttributeProperty(CodeAttributeDeclaration attribute, string propertyName)
        { 
            if (attribute == null) 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("attribute");
            if (propertyName == null) 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("propertyName");

            foreach (CodeAttributeArgument argument in attribute.Arguments)
                if (argument.Name == propertyName) 
                    return argument;
 
            return null; 
        }
    } 
}

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

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