partial support for named arguments in attributes.

ICSharpCode.Decompiler/Ast/AstBuilder.cs

@@ -600,21 +600,30 @@ namespace Decompiler
 					attribute.Type = ConvertType(customAttribute.AttributeType);
 					section.Attributes.Add(attribute);
 
-					foreach (var parameter in customAttribute.ConstructorArguments)
-					{
-						var isEnum = parameter.Type.IsValueType && !parameter.Type.IsPrimitive;
-						Expression parameterValue;
-						if (isEnum)
+					if(customAttribute.HasConstructorArguments)
+						foreach (var parameter in customAttribute.ConstructorArguments)
 						{
-							parameterValue = MakePrimitive(Convert.ToInt64(parameter.Value), parameter.Type);
+							var isEnum = parameter.Type.IsValueType && !parameter.Type.IsPrimitive;
+							Expression parameterValue;
+							if (isEnum)
+							{
+								parameterValue = MakePrimitive(Convert.ToInt64(parameter.Value), parameter.Type);
+							}
+							else
+							{
+								parameterValue = new PrimitiveExpression(parameter.Value);
+							}
+							attribute.Arguments.Add(parameterValue);
 						}
-						else
+
+					if (customAttribute.HasProperties)
+						foreach (var property in customAttribute.Properties)
 						{
-							parameterValue = new PrimitiveExpression(parameter.Value);
+							var propertyReference = customAttribute.AttributeType.Resolve().Properties.First(pr => pr.Name == property.Name);
+							var propertyName = new IdentifierExpression(property.Name).WithAnnotation(propertyReference);
+							var propertyArgument = new PrimitiveExpression(property.Argument.Value);
+							attribute.Arguments.Add(new AssignmentExpression(propertyName, propertyArgument));
 						}
-						attribute.Arguments.Add(parameterValue);
-					}
-
 				}
 
 				attributedNode.Attributes.Add(section);

ICSharpCode.Decompiler/Tests/CustomAttributes/CustomAttributeSamples.cs

@@ -11,7 +11,7 @@ namespace ParameterLessAttributeUsage
 	[Flags]
 	public enum EnumWithFlagsAttribute
 	{
-		None
+		None = 0
 	}
 }
 //$$ AttributeWithEnumArgument
@@ -79,3 +79,11 @@ namespace AttributeAppliedToMethod
 		}
 	}
 }
+//$$ NamedParameter
+namespace NamedParameter
+{
+	[AttributeUsage(AttributeTargets.Method, AllowMultiple = true)]
+	public class MyAttributeAttribute : Attribute
+	{
+	}
+}