C# ICustomAttributeProvider类代码示例

        public static IEnumerable<Type> GetKnownTypes(ICustomAttributeProvider provider)
        {
            System.Collections.Generic.List<System.Type> knownTypes =
                new System.Collections.Generic.List<System.Type>();
            //// Add any types to include here.

            //return knownTypes;
            Type[] types = Assembly.Load("SMT_FB_EFModel").GetTypes();

            for (int i = 0; i < types.Length; i++)
            {
                if ((types[i].BaseType == typeof(EntityObject)) || typeof(VisitUserBase).IsAssignableFrom(types[i]))
                {
                    knownTypes.Add(types[i]);
                }
            }
            //List<Type> typesO = knownTypes.ToList();
            //typesO.ForEach(item =>
            //{
            //    knownTypes.Add(typeof(List<>).MakeGenericType(new Type[] { item }));
            //});

            knownTypes.Add(typeof(AuditResult));
            knownTypes.Add(typeof(SaveResult));
            knownTypes.Add(typeof(VirtualAudit));
            knownTypes.Add(typeof(SMT.SaaS.BLLCommonServices.FlowWFService.SubmitData));

            return knownTypes;
        }

 public virtual void ProcessAttributes(IMetaData metaData, ICustomAttributeProvider attributeProvider)
 {
     foreach(AttributeProcessor processor in AttributeProcessors)
     {
         processor.Process(metaData, attributeProvider, this.Config);
     }
 }

        public static IEnumerable<UsesLibraryAttribute> FromCustomAttributeProvider(ICustomAttributeProvider provider)
        {
            var attrs = provider.GetCustomAttributes ("Android.App.UsesLibraryAttribute");
            foreach (var attr in attrs) {
                UsesLibraryAttribute self;

                string[] extra = null;
                if (attr.ConstructorArguments.Count == 1) {
                    self = new UsesLibraryAttribute (
                            (string)  attr.ConstructorArguments [0].Value);
                    extra = new[]{"Name"};
                } else if (attr.ConstructorArguments.Count == 2) {
                    self = new UsesLibraryAttribute (
                            (string)  attr.ConstructorArguments [0].Value,
                            (bool)    attr.ConstructorArguments [1].Value);
                    extra = new[]{"Name", "Required"};
                } else {
                    self = new UsesLibraryAttribute ();
                    extra = new string[0];
                }

                self.specified = mapping.Load (self, attr);

                foreach (var e in extra)
                    self.specified.Add (e);

                yield return self;
            }
        }

        public static IEnumerable<UsesFeatureAttribute> FromCustomAttributeProvider(ICustomAttributeProvider provider)
        {
            var attrs = provider.GetCustomAttributes ("Android.App.UsesFeatureAttribute");
            foreach (var attr in attrs) {

                UsesFeatureAttribute self = new UsesFeatureAttribute ();

                if (attr.HasProperties) {
                    // handle the case where the user sets additional properties
                    self.specified = mapping.Load (self, attr);
                    if (self.specified.Contains("GLESVersion") && self.GLESVersion==0) {
                        throw new InvalidOperationException("Invalid value '0' for UsesFeatureAttribute.GLESVersion.");
                    }
                }
                if (attr.HasConstructorArguments) {
                    // in this case the user used one of the Consructors to pass arguments and possibly properties
                    // so we only create the specified list if its not been created already
                    if (self.specified == null)
                        self.specified = new List<string>();
                    foreach(var arg in attr.ConstructorArguments) {
                        if (arg.Value.GetType() == typeof(string)) {
                            self.specified.Add("Name");
                            self.Name = (string)arg.Value;
                        }
                    }
                }
                yield return self;
            }
        }

 /// <include file='doc\SoapAttributes.uex' path='docs/doc[@for="SoapAttributes.SoapAttributes1"]/*' />
 /// <devdoc>
 ///    <para>[To be supplied.]</para>
 /// </devdoc>
 public SoapAttributes(ICustomAttributeProvider provider) {
     object[] attrs = provider.GetCustomAttributes(false);
     for (int i = 0; i < attrs.Length; i++) {
         if (attrs[i] is SoapIgnoreAttribute || attrs[i] is ObsoleteAttribute) {
             this.soapIgnore = true;
             break;
         }
         else if (attrs[i] is SoapElementAttribute) {
             this.soapElement = (SoapElementAttribute)attrs[i];
         }
         else if (attrs[i] is SoapAttributeAttribute) {
             this.soapAttribute = (SoapAttributeAttribute)attrs[i];
         }
         else if (attrs[i] is SoapTypeAttribute) {
             this.soapType = (SoapTypeAttribute)attrs[i];
         }
         else if (attrs[i] is SoapEnumAttribute) {
             this.soapEnum = (SoapEnumAttribute)attrs[i];
         }
         else if (attrs[i] is DefaultValueAttribute) {
             this.soapDefaultValue = ((DefaultValueAttribute)attrs[i]).Value;
         }
     }
     if (soapIgnore) {
         this.soapElement = null;
         this.soapAttribute = null;
         this.soapType = null;
         this.soapEnum = null;
         this.soapDefaultValue = null;
     }
 }

 void AssertDescriptorMatches(ILookup<string, SecurityAttributeDescriptor> descriptors, string signature, ICustomAttributeProvider element)
 {
     if (descriptors.Contains(signature))
         AssertContainsAttribute(element, descriptors[signature].Single().AttributeTypeName);
     else
         AssertContainsNoAttribute(element);
 }

 public AttributeSet(ICustomAttributeProvider attributeProvider)
 {
     this.attributes = attributeProvider
         .GetCustomAttributes(true)
         .Cast<Attribute>()
         .ToArray();
 }

		internal TemplateBuilder (ICustomAttributeProvider prov)
		{
			object[] ats = prov.GetCustomAttributes (typeof(TemplateContainerAttribute), true);
			if (ats.Length > 0) {
				containerAttribute = (TemplateContainerAttribute) ats [0];
			}
		}

 public IEnumerable<ValidationAttribute> GetAttributes(ICustomAttributeProvider attributeProvider)
 {
     return attributeProvider
         .GetAttributes<ValidationAttribute>()
         .Select(attr => container.BuildUp(attr.GetType(), attr))
         .Cast<ValidationAttribute>();
 }

        private static object CreateSubstituteRequest(ICustomAttributeProvider request, SubstituteAttribute attribute)
        {
            var parameter = request as ParameterInfo;
            if (parameter != null)
            {
                return new SubstituteRequest(parameter.ParameterType);
            }

            var property = request as PropertyInfo;
            if (property != null)
            {
                return new SubstituteRequest(property.PropertyType);
            }

            var field = request as FieldInfo;
            if (field != null)
            {
                return new SubstituteRequest(field.FieldType);
            }

            throw new NotSupportedException(
                string.Format(
                    CultureInfo.CurrentCulture,
                    "{0} is applied to an unsupported code element {1}",
                    attribute, request));
        }

        internal static IModelBinder GetBinderFromAttributes(ICustomAttributeProvider element, Func<string> errorMessageAccessor)
        {
            // this method is used to get a custom binder based on the attributes of the element passed to it.
            // it will return null if a binder cannot be detected based on the attributes alone.

            var attrs = (CustomModelBinderAttribute[]) element.GetCustomAttributes(typeof (CustomModelBinderAttribute), true /* inherit */);
            if (attrs == null)
            {
                return null;
            }

            switch (attrs.Length)
            {
                case 0:
                    return null;

                case 1:
                    var binder = attrs[0].GetBinder();
                    return binder;

                default:
                    var errorMessage = errorMessageAccessor();
                    throw new InvalidOperationException(errorMessage);
            }
        }

        public static TypeDefinition ResolveType(string type, ICustomAttributeProvider provider, IAssemblyResolver resolver)
        {
            if (provider == null)
                throw new ArgumentException ("Type resolution support requires an AssemblyDefinition or TypeDefinition.", "provider");
            if (resolver == null)
                throw new ArgumentException ("Type resolution support requires a IAssemblyResolver.", "resolver");

            // `type` is either a "bare" type "Foo.Bar", or an
            // assembly-qualified type "Foo.Bar, AssemblyName [Version=...]?".
            //
            // Bare types are looked up via `provider`; assembly-qualified types are
            // looked up via `resolver`

            int c = type.IndexOf (',');
            string typeName = c < 0 ? type  : type.Substring (0, c);
            string assmName = c < 0 ? null  : type.Substring (c+1);

            AssemblyDefinition assembly = assmName == null ? null : resolver.Resolve (assmName);
            if (assembly == null) {
                assembly = provider as AssemblyDefinition;
                if (assembly == null) {
                    TypeDefinition decl = (TypeDefinition) provider;
                    assembly = decl.Module.Assembly;
                }
            }
            var ret = assembly.Modules.Cast<ModuleDefinition> ()
                .Select (md => md.Types.FirstOrDefault (t => t.FullName == typeName))
                .FirstOrDefault (td => td != null);
            if (ret == null)
                throw new ArgumentException ("Type not found: " + type, "type");

            return ret;
        }

 private static IEnumerable<string> GetInvalidSuppressMessageAttributeErrorsCore(ICustomAttributeProvider target, string name, string targetType, IEnumerable<Exemption> exemptions) {
     foreach (SuppressMessageAttribute attr in target.GetCustomAttributes(typeof(SuppressMessageAttribute), false).OfType<SuppressMessageAttribute>()) {
         if (String.IsNullOrWhiteSpace(attr.Justification) && !IsExempt(exemptions, attr.CheckId, name, targetType)) {
             yield return FormatErrorMessage(attr, name, targetType);
         }
     }
 }

        void ProcessExports(ICustomAttributeProvider provider)
        {
            if (provider == null)
                return;
            if (!provider.HasCustomAttributes)
                return;

            var attributes = provider.CustomAttributes;

            for (int i = 0; i < attributes.Count; i++) {
                var attribute = attributes [i];
                switch (attribute.Constructor.DeclaringType.FullName) {
                case "Java.Interop.ExportAttribute":
                    Annotations.Mark (provider);
                    if (!attribute.HasProperties)
                        break;
                    var throwsAtt = attribute.Properties.FirstOrDefault (p => p.Name == "Throws");
                    var thrownTypesArgs = throwsAtt.Argument.Value != null ? (CustomAttributeArgument []) throwsAtt.Argument.Value : null;
                    if (thrownTypesArgs != null)
                        foreach (var attArg in thrownTypesArgs)
                            Annotations.Mark (((TypeReference) attArg.Value).Resolve ());
                    break;
                case "Java.Interop.ExportFieldAttribute":
                    Annotations.Mark (provider);
                    break;
                default:
                    continue;
                }
                if (provider is MemberReference)
                    Annotations.Mark (((MemberReference) provider).DeclaringType.Resolve ());
                if (provider is MethodDefinition)
                    Annotations.SetAction (((MethodDefinition) provider), MethodAction.ForceParse);
            }
        }

 /// <summary>
 /// Create annotations for all included attributes
 /// </summary>
 public static void Create(AssemblyCompiler compiler, ICustomAttributeProvider attributeProvider,
                           IAnnotationProvider annotationProvider, DexTargetPackage targetPackage, bool customAttributesOnly = false)
 {
     if (!attributeProvider.HasCustomAttributes)
         return;
     var annotations = new List<Annotation>();
     foreach (var attr in attributeProvider.CustomAttributes)
     {
         var attributeType = attr.AttributeType.Resolve();
         if (!attributeType.HasIgnoreAttribute())
         {
             Create(compiler, attr, attributeType, annotations, targetPackage);
         }
     }
     if (annotations.Count > 0)
     {
         // Create 1 IAttributes annotation
         var attrsAnnotation = new Annotation { Visibility = AnnotationVisibility.Runtime };
         attrsAnnotation.Type = compiler.GetDot42InternalType("IAttributes").GetClassReference(targetPackage);
         attrsAnnotation.Arguments.Add(new AnnotationArgument("Attributes", annotations.ToArray()));
         annotationProvider.Annotations.Add(attrsAnnotation);
     }
     if (!customAttributesOnly)
     {
         // Add annotations specified using AnnotationAttribute
         foreach (var attr in attributeProvider.CustomAttributes.Where(IsAnnotationAttribute))
         {
             var annotationType = (TypeReference) attr.ConstructorArguments[0].Value;
             var annotationClass = annotationType.GetClassReference(targetPackage, compiler.Module);
             annotationProvider.Annotations.Add(new Annotation(annotationClass, AnnotationVisibility.Runtime));
         }
     }
 }