Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/mscorlib/system/reflection/CustomAttributeExtensions.cs

@@ -0,0 +1,171 @@
+using System.Collections.Generic;
+
+namespace System.Reflection
+{
+    public static class CustomAttributeExtensions
+    {
+        #region APIs that return a single attribute
+        public static Attribute GetCustomAttribute(this Assembly element, Type attributeType)
+        {
+            return Attribute.GetCustomAttribute(element, attributeType);
+        }
+        public static Attribute GetCustomAttribute(this Module element, Type attributeType)
+        {
+            return Attribute.GetCustomAttribute(element, attributeType);
+        }
+        public static Attribute GetCustomAttribute(this MemberInfo element, Type attributeType)
+        {
+            return Attribute.GetCustomAttribute(element, attributeType);
+        }
+        public static Attribute GetCustomAttribute(this ParameterInfo element, Type attributeType)
+        {
+            return Attribute.GetCustomAttribute(element, attributeType);
+        }
+
+        public static T GetCustomAttribute<T>(this Assembly element) where T : Attribute
+        {
+            return (T)GetCustomAttribute(element, typeof(T));
+        }
+        public static T GetCustomAttribute<T>(this Module element) where T : Attribute
+        {
+            return (T)GetCustomAttribute(element, typeof(T));
+        }
+        public static T GetCustomAttribute<T>(this MemberInfo element) where T : Attribute
+        {
+            return (T)GetCustomAttribute(element, typeof(T));
+        }
+        public static T GetCustomAttribute<T>(this ParameterInfo element) where T : Attribute
+        {
+            return (T)GetCustomAttribute(element, typeof(T));
+        }
+
+        public static Attribute GetCustomAttribute(this MemberInfo element, Type attributeType, bool inherit)
+        {
+            return Attribute.GetCustomAttribute(element, attributeType, inherit);
+        }
+        public static Attribute GetCustomAttribute(this ParameterInfo element, Type attributeType, bool inherit)
+        {
+            return Attribute.GetCustomAttribute(element, attributeType, inherit);
+        }
+
+        public static T GetCustomAttribute<T>(this MemberInfo element, bool inherit) where T : Attribute
+        {
+            return (T)GetCustomAttribute(element, typeof(T), inherit);
+        }
+        public static T GetCustomAttribute<T>(this ParameterInfo element, bool inherit) where T : Attribute
+        {
+            return (T)GetCustomAttribute(element, typeof(T), inherit);
+        }
+        #endregion
+
+        #region APIs that return all attributes
+        public static IEnumerable<Attribute> GetCustomAttributes(this Assembly element)
+        {
+            return Attribute.GetCustomAttributes(element);
+        }
+        public static IEnumerable<Attribute> GetCustomAttributes(this Module element)
+        {
+            return Attribute.GetCustomAttributes(element);
+        }
+        public static IEnumerable<Attribute> GetCustomAttributes(this MemberInfo element)
+        {
+            return Attribute.GetCustomAttributes(element);
+        }
+        public static IEnumerable<Attribute> GetCustomAttributes(this ParameterInfo element)
+        {
+            return Attribute.GetCustomAttributes(element);
+        }
+
+        public static IEnumerable<Attribute> GetCustomAttributes(this MemberInfo element, bool inherit)
+        {
+            return Attribute.GetCustomAttributes(element, inherit);
+        }
+        public static IEnumerable<Attribute> GetCustomAttributes(this ParameterInfo element, bool inherit)
+        {
+            return Attribute.GetCustomAttributes(element, inherit);
+        }
+        #endregion
+
+        #region APIs that return all attributes of a particular type
+        public static IEnumerable<Attribute> GetCustomAttributes(this Assembly element, Type attributeType)
+        {
+            return Attribute.GetCustomAttributes(element, attributeType);
+        }
+        public static IEnumerable<Attribute> GetCustomAttributes(this Module element, Type attributeType)
+        {
+            return Attribute.GetCustomAttributes(element, attributeType);
+        }
+        public static IEnumerable<Attribute> GetCustomAttributes(this MemberInfo element, Type attributeType)
+        {
+            return Attribute.GetCustomAttributes(element, attributeType);
+        }
+        public static IEnumerable<Attribute> GetCustomAttributes(this ParameterInfo element, Type attributeType)
+        {
+            return Attribute.GetCustomAttributes(element, attributeType);
+        }
+
+        public static IEnumerable<T> GetCustomAttributes<T>(this Assembly element) where T : Attribute
+        {
+            return (IEnumerable<T>)GetCustomAttributes(element, typeof(T));
+        }
+        public static IEnumerable<T> GetCustomAttributes<T>(this Module element) where T : Attribute
+        {
+            return (IEnumerable<T>)GetCustomAttributes(element, typeof(T));
+        }
+        public static IEnumerable<T> GetCustomAttributes<T>(this MemberInfo element) where T : Attribute
+        {
+            return (IEnumerable<T>)GetCustomAttributes(element, typeof(T));
+        }
+        public static IEnumerable<T> GetCustomAttributes<T>(this ParameterInfo element) where T : Attribute
+        {
+            return (IEnumerable<T>)GetCustomAttributes(element, typeof(T));
+        }
+
+        public static IEnumerable<Attribute> GetCustomAttributes(this MemberInfo element, Type attributeType, bool inherit)
+        {
+            return Attribute.GetCustomAttributes(element, attributeType, inherit);
+        }
+        public static IEnumerable<Attribute> GetCustomAttributes(this ParameterInfo element, Type attributeType, bool inherit)
+        {
+            return Attribute.GetCustomAttributes(element, attributeType, inherit);
+        }
+
+        public static IEnumerable<T> GetCustomAttributes<T>(this MemberInfo element, bool inherit) where T : Attribute
+        {
+            return (IEnumerable<T>)GetCustomAttributes(element, typeof(T), inherit);
+        }
+        public static IEnumerable<T> GetCustomAttributes<T>(this ParameterInfo element, bool inherit) where T : Attribute
+        {
+            return (IEnumerable<T>)GetCustomAttributes(element, typeof(T), inherit);
+        }
+        #endregion
+
+        #region IsDefined
+        public static bool IsDefined(this Assembly element, Type attributeType)
+        {
+            return Attribute.IsDefined(element, attributeType);
+        }
+        public static bool IsDefined(this Module element, Type attributeType)
+        {
+            return Attribute.IsDefined(element, attributeType);
+        }
+        public static bool IsDefined(this MemberInfo element, Type attributeType)
+        {
+            return Attribute.IsDefined(element, attributeType);
+        }
+        public static bool IsDefined(this ParameterInfo element, Type attributeType)
+        {
+            return Attribute.IsDefined(element, attributeType);
+        }
+
+        public static bool IsDefined(this MemberInfo element, Type attributeType, bool inherit)
+        {
+            return Attribute.IsDefined(element, attributeType, inherit);
+        }
+        public static bool IsDefined(this ParameterInfo element, Type attributeType, bool inherit)
+        {
+            return Attribute.IsDefined(element, attributeType, inherit);
+        }
+        #endregion
+    }
+}