Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.ServiceModel/System/ServiceModel/Channels/DirectionalAction.cs

@@ -0,0 +1,74 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+namespace System.ServiceModel.Channels
+{
+    using System.ServiceModel;
+    using System.ServiceModel.Description;
+    using System.Collections.Generic;
+    internal class DirectionalAction : IComparable<DirectionalAction>
+    {
+        MessageDirection direction;
+        string action;
+        bool isNullAction;
+
+        internal DirectionalAction(MessageDirection direction, string action)
+        {
+            if (!MessageDirectionHelper.IsDefined(direction))
+                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("direction"));
+
+            this.direction = direction;
+            if (action == null)
+            {
+                this.action = MessageHeaders.WildcardAction;
+                this.isNullAction = true;
+            }
+            else
+            {
+                this.action = action;
+                this.isNullAction = false;
+            }
+        }
+
+        public MessageDirection Direction
+        { get { return this.direction; } }
+
+        public string Action
+        { get { return this.isNullAction ? null : this.action; } }
+
+        public override bool Equals(Object other)
+        {
+            DirectionalAction tmp = other as DirectionalAction;
+            if (tmp == null)
+                return false;
+            return this.Equals(tmp);
+        }
+
+        public bool Equals(DirectionalAction other)
+        {
+            if (other == null)
+                return false;
+
+            return (this.direction == other.direction)
+                && (this.action == other.action);
+        }
+
+        public int CompareTo(DirectionalAction other)
+        {
+            if (other == null)
+                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("other");
+
+            if ((this.direction == MessageDirection.Input) && (other.direction == MessageDirection.Output))
+                return -1;
+            if ((this.direction == MessageDirection.Output) && (other.direction == MessageDirection.Input))
+                return 1;
+
+            return this.action.CompareTo(other.action);
+        }
+
+        public override int GetHashCode()
+        {
+            return this.action.GetHashCode();
+        }
+    }
+}