Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Data.Entity/System/Data/Common/Utils/InternalBase.cs

@@ -0,0 +1,42 @@
+//---------------------------------------------------------------------
+// <copyright file="InternalBase.cs" company="Microsoft">
+//      Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//
+// @owner [....]
+// @backupOwner [....]
+//---------------------------------------------------------------------
+
+
+using System;
+using System.Collections;
+using System.Text;
+
+namespace System.Data.Common.Utils {
+    // A basic class from which all classes derive so that ToString can be
+    // more controlled
+    internal abstract class InternalBase {
+
+        // effects: Modify builder to contain a compact string representation
+        // of this
+        internal abstract void ToCompactString(StringBuilder builder);
+
+        // effects: Modify builder to contain a verbose string representation
+        // of this
+        internal virtual void ToFullString(StringBuilder builder) {
+            ToCompactString(builder);
+        }
+
+        public override string ToString() {
+			StringBuilder builder = new StringBuilder();
+            ToCompactString(builder);
+            return builder.ToString();
+        }        
+
+        internal virtual string ToFullString() {
+			StringBuilder builder = new StringBuilder();
+            ToFullString(builder);
+            return builder.ToString();
+        }
+    }
+}