Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System/compmod/system/componentmodel/DataObjectMethodAttribute.cs

@@ -0,0 +1,65 @@
+//------------------------------------------------------------------------------
+// <copyright file="DataObjectAttribute.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+namespace System.ComponentModel {
+
+    using System;
+    using System.Security.Permissions;
+
+    /// <devdoc>
+    /// </devdoc>
+    [AttributeUsage(AttributeTargets.Method)]
+    public sealed class DataObjectMethodAttribute : Attribute {
+
+        private bool _isDefault;
+        private DataObjectMethodType _methodType;
+
+        public DataObjectMethodAttribute(DataObjectMethodType methodType) : this(methodType, false) {
+        }
+
+        public DataObjectMethodAttribute(DataObjectMethodType methodType, bool isDefault) {
+            _methodType = methodType;
+            _isDefault = isDefault;
+        }
+
+        public bool IsDefault {
+            get {
+                return _isDefault;
+            }
+        }
+
+        public DataObjectMethodType MethodType {
+            get {
+                return _methodType;
+            }
+        }
+
+        /// <internalonly/>
+        public override bool Equals(object obj) {
+            if (obj == this) {
+                return true;
+            }
+
+            DataObjectMethodAttribute other = obj as DataObjectMethodAttribute;
+            return (other != null) && (other.MethodType == MethodType) && (other.IsDefault == IsDefault);
+        }
+
+        /// <internalonly/>
+        public override int GetHashCode() {
+            return ((int)_methodType).GetHashCode() ^ _isDefault.GetHashCode();
+        }
+
+        /// <internalonly/>
+        public override bool Match(object obj) {
+            if (obj == this) {
+                return true;
+            }
+
+            DataObjectMethodAttribute other = obj as DataObjectMethodAttribute;
+            return (other != null) && (other.MethodType == MethodType);
+        }
+    }
+}