Imported Upstream version 2.0.0.11353upstream/2.0.0.11353

1 files changed, 58 insertions, 0 deletions

diff --git a/src/mscorlib/shared/System/AttributeUsageAttribute.cs b/src/mscorlib/shared/System/AttributeUsageAttribute.cs
new file mode 100644
index 0000000000..6f9aeb20f3
--- /dev/null
+++ b/src/mscorlib/shared/System/AttributeUsageAttribute.cs
@@ -0,0 +1,58 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+/*============================================================
+**
+**
+**
+** Purpose: The class denotes how to specify the usage of an attribute
+**          
+**
+===========================================================*/
+
+using System.Reflection;
+
+namespace System
+{
+    /* By default, attributes are inherited and multiple attributes are not allowed */
+    [Serializable]
+    [AttributeUsage(AttributeTargets.Class, Inherited = true)]
+    public sealed class AttributeUsageAttribute : Attribute
+    {
+        private AttributeTargets _attributeTarget = AttributeTargets.All; // Defaults to all
+        private bool _allowMultiple = false; // Defaults to false
+        private bool _inherited = true; // Defaults to true
+
+        internal static AttributeUsageAttribute Default = new AttributeUsageAttribute(AttributeTargets.All);
+
+        //Constructors 
+        public AttributeUsageAttribute(AttributeTargets validOn)
+        {
+            _attributeTarget = validOn;
+        }
+        internal AttributeUsageAttribute(AttributeTargets validOn, bool allowMultiple, bool inherited)
+        {
+            _attributeTarget = validOn;
+            _allowMultiple = allowMultiple;
+            _inherited = inherited;
+        }
+
+        public AttributeTargets ValidOn
+        {
+            get { return _attributeTarget; }
+        }
+
+        public bool AllowMultiple
+        {
+            get { return _allowMultiple; }
+            set { _allowMultiple = value; }
+        }
+
+        public bool Inherited
+        {
+            get { return _inherited; }
+            set { _inherited = value; }
+        }
+    }
+}