using System;using System.Collections;using System.Reflection;using System.Reflection.Emit;using System.Runtime;using System.Runtime.Serialization;namespace System.Text.RegularExpressions{    [Serializable]    public class Regex : ISerializable    {        protected internal Hashtable capnames;        protected internal Hashtable caps;        protected internal int capsize;        protected internal string[] capslist;        protected internal RegexRunnerFactory factory;        protected internal string pattern;        protected internal RegexOptions roptions;               [TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]        protected Regex();        [TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]        public Regex(string pattern);        protected Regex(SerializationInfo info, StreamingContext context);        [TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]        public Regex(string pattern, RegexOptions options);        public static int CacheSize { get; set; }        public RegexOptions Options { get; }        public bool RightToLeft { get; }        [TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]        public static void CompileToAssembly(RegexCompilationInfo[] regexinfos, AssemblyName assemblyname);        [TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]        public static void CompileToAssembly(RegexCompilationInfo[] regexinfos, AssemblyName assemblyname, CustomAttributeBuilder[] attributes);        [TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]        public static void CompileToAssembly(RegexCompilationInfo[] regexinfos, AssemblyName assemblyname, CustomAttributeBuilder[] attributes, string resourceFile);        public static string Escape(string str);        public string[] GetGroupNames();        public int[] GetGroupNumbers();        public string GroupNameFromNumber(int i);        public int GroupNumberFromName(string name);        protected void InitializeReferences();        public bool IsMatch(string input);        public bool IsMatch(string input, int startat);        public static bool IsMatch(string input, string pattern);        public static bool IsMatch(string input, string pattern, RegexOptions options);        public Match Match(string input);        public Match Match(string input, int startat);        public static Match Match(string input, string pattern);        public Match Match(string input, int beginning, int length);        public static Match Match(string input, string pattern, RegexOptions options);        public MatchCollection Matches(string input);        public MatchCollection Matches(string input, int startat);        public static MatchCollection Matches(string input, string pattern);        public static MatchCollection Matches(string input, string pattern, RegexOptions options);        public string Replace(string input, MatchEvaluator evaluator);        public string Replace(string input, string replacement);        public string Replace(string input, MatchEvaluator evaluator, int count);        public string Replace(string input, string replacement, int count);        public static string Replace(string input, string pattern, MatchEvaluator evaluator);        public static string Replace(string input, string pattern, string replacement);        public string Replace(string input, MatchEvaluator evaluator, int count, int startat);        public string Replace(string input, string replacement, int count, int startat);        public static string Replace(string input, string pattern, MatchEvaluator evaluator, RegexOptions options);        public static string Replace(string input, string pattern, string replacement, RegexOptions options);        public string[] Split(string input);        public string[] Split(string input, int count);        public static string[] Split(string input, string pattern);        public string[] Split(string input, int count, int startat);        public static string[] Split(string input, string pattern, RegexOptions options);        public override string ToString();        public static string Unescape(string str);        protected bool UseOptionC();        protected bool UseOptionR();    }}