Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System/regex/system/text/regularexpressions/compiledregexrunner.cs

@@ -0,0 +1,47 @@
+//------------------------------------------------------------------------------
+// <copyright file="CompiledRegexRunner.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+using System;
+using System.Diagnostics;
+
+#if !SILVERLIGHT && !FULL_AOT_RUNTIME
+using System.Reflection.Emit;
+
+namespace System.Text.RegularExpressions {
+
+    internal sealed class CompiledRegexRunner : RegexRunner {
+        NoParamDelegate goMethod;
+        FindFirstCharDelegate findFirstCharMethod;
+        NoParamDelegate initTrackCountMethod;
+
+        internal CompiledRegexRunner() {}
+
+        internal void SetDelegates(NoParamDelegate go, FindFirstCharDelegate firstChar, NoParamDelegate trackCount) {
+            goMethod = go;
+            findFirstCharMethod = firstChar;
+            initTrackCountMethod = trackCount;
+        }
+        
+        protected override void Go() {
+            goMethod(this);
+        }
+
+        protected override bool FindFirstChar() {
+            return findFirstCharMethod(this);
+        }
+
+        protected override void InitTrackCount() {
+            initTrackCountMethod(this);
+        }
+    }
+
+    internal delegate void NoParamDelegate(RegexRunner r);
+    internal delegate bool FindFirstCharDelegate(RegexRunner r);
+    
+}
+
+#endif
+