mcs/class/referencesource/System/regex/system/text/regularexpressions/compiledregexrunnerfactory.cs

   1 //------------------------------------------------------------------------------
   2 // <copyright file="CompiledRegexRunnerFactory.cs" company="Microsoft">
   3 //     Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 //------------------------------------------------------------------------------
   6
   7 using System.Reflection.Emit;
   8 using System.Diagnostics;
   9 using System.Security.Permissions;
  10
  11 #if !SILVERLIGHT
  12
  13 namespace System.Text.RegularExpressions {
  14
  15
  16     internal sealed class CompiledRegexRunnerFactory : RegexRunnerFactory {
  17         DynamicMethod goMethod;
  18         DynamicMethod findFirstCharMethod;
  19         DynamicMethod initTrackCountMethod;
  20
  21         internal CompiledRegexRunnerFactory (DynamicMethod go, DynamicMethod firstChar, DynamicMethod trackCount) {
  22             this.goMethod = go;
  23             this.findFirstCharMethod = firstChar;
  24             this.initTrackCountMethod = trackCount;
  25             //Debug.Assert(goMethod != null && findFirstCharMethod != null && initTrackCountMethod != null, "can't be null");
  26         }
  27
  28         protected internal override RegexRunner CreateInstance() {
  29             CompiledRegexRunner runner = new CompiledRegexRunner();
  30
  31             new ReflectionPermission(PermissionState.Unrestricted).Assert();
  32             runner.SetDelegates((NoParamDelegate)       goMethod.CreateDelegate(typeof(NoParamDelegate)),
  33                                 (FindFirstCharDelegate) findFirstCharMethod.CreateDelegate(typeof(FindFirstCharDelegate)),
  34                                 (NoParamDelegate)       initTrackCountMethod.CreateDelegate(typeof(NoParamDelegate)));
  35
  36             return runner;
  37         }
  38     }
  39
  40     internal delegate RegexRunner CreateInstanceDelegate();
  41 }
  42
  43 #endif
  44