1208 lines
46 KiB
C#
1208 lines
46 KiB
C#
|
//------------------------------------------------------------------------------
|
||
|
|
// <copyright file="Regex.cs" company='Microsoft Corporation'>
|
||
|
|
//
|
||
|
|
// Copyright (c) Microsoft Corporation. All rights reserved.
|
||
|
|
//
|
||
|
|
// </copyright>
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
// The Regex class represents a single compiled instance of a regular
|
||
|
|
// expression.
|
||
|
|
//
|
||
|
|
#define ECMA
|
||
|
|
|
||
|
|
namespace System.Text.RegularExpressions {
|
||
|
|
|
||
|
|
using System;
|
||
|
|
using System.Threading;
|
||
|
|
using System.Collections;
|
||
|
|
//using System.Runtime.Serialization;
|
||
|
|
//using System.Reflection;
|
||
|
|
//using System.Reflection.Emit;
|
||
|
|
using System.Globalization;
|
||
|
|
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Represents an immutable, compiled regular expression. Also
|
||
|
|
/// contains static methods that allow use of regular expressions without instantiating
|
||
|
|
/// a Regex explicitly.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
//[ Serializable() ]
|
||
|
|
public class Regex {//: ISerializable {
|
||
|
|
|
||
|
|
// Fields used by precompiled regexes
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.pattern"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>[To be supplied.]</para>
|
||
|
|
/// </devdoc>
|
||
|
|
protected internal string pattern;
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.factory"]/*' />
|
||
|
|
#if false
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>[To be supplied.]</para>
|
||
|
|
/// </devdoc>
|
||
|
|
protected internal RegexRunnerFactory factory; // if compiled, this is the RegexRunner subclass
|
||
|
|
#endif
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.roptions"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>[To be supplied.]</para>
|
||
|
|
/// </devdoc>
|
||
|
|
protected internal RegexOptions roptions; // the top-level options from the options string
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.caps"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>[To be supplied.]</para>
|
||
|
|
/// </devdoc>
|
||
|
|
protected internal Hashtable caps; // if captures are sparse, this is the hashtable capnum->index
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.capnames"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>[To be supplied.]</para>
|
||
|
|
/// </devdoc>
|
||
|
|
protected internal Hashtable capnames; // if named captures are used, this maps names->index
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.capslist"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>[To be supplied.]</para>
|
||
|
|
/// </devdoc>
|
||
|
|
protected internal String[] capslist; // if captures are sparse or named captures are used, this is the sorted list of names
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.capsize"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>[To be supplied.]</para>
|
||
|
|
/// </devdoc>
|
||
|
|
protected internal int capsize; // the size of the capture array
|
||
|
|
|
||
|
|
internal ExclusiveReference runnerref; // cached runner
|
||
|
|
internal SharedReference replref; // cached parsed replacement pattern
|
||
|
|
internal RegexCode code; // if interpreted, this is the code for RegexIntepreter
|
||
|
|
internal CachedCodeEntry cachedentry;
|
||
|
|
internal bool refsInitialized = false;
|
||
|
|
|
||
|
|
internal static Hashtable livecode = new Hashtable();// the cached of code and factories that are currently loaded
|
||
|
|
|
||
|
|
internal const int MaxOptionShift = 10;
|
||
|
|
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Regex2"]/*' />
|
||
|
|
protected Regex() {
|
||
|
|
}
|
||
|
|
|
||
|
|
// Compiles and returns a Regex object corresponding to the given pattern
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Regex"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Creates and compiles a regular expression object for the specified regular
|
||
|
|
/// expression.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public Regex(String pattern) : this(pattern, RegexOptions.None) {
|
||
|
|
}
|
||
|
|
|
||
|
|
// Returns a Regex object corresponding to the given pattern, compiled with
|
||
|
|
// the specified options.
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Regex1"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Creates and compiles a regular expression object for the
|
||
|
|
/// specified regular expression
|
||
|
|
/// with options that modify the pattern.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public Regex(String pattern, RegexOptions options) {
|
||
|
|
RegexTree tree;
|
||
|
|
CachedCodeEntry cached;
|
||
|
|
|
||
|
|
if (pattern == null)
|
||
|
|
throw new ArgumentNullException("pattern");
|
||
|
|
|
||
|
|
|
||
|
|
if (options < RegexOptions.None || ( ((int) options) >> MaxOptionShift) != 0)
|
||
|
|
throw new ArgumentOutOfRangeException("options");
|
||
|
|
if ((options & RegexOptions.ECMAScript) != 0
|
||
|
|
&& (options & ~(RegexOptions.ECMAScript | RegexOptions.IgnoreCase | RegexOptions.Multiline | RegexOptions.Compiled
|
||
|
|
#if DBG
|
||
|
|
| RegexOptions.Debug
|
||
|
|
#endif
|
||
|
|
)) != 0)
|
||
|
|
throw new ArgumentOutOfRangeException("options");
|
||
|
|
|
||
|
|
//XXX: String key = ((int) options).ToString(NumberFormatInfo.InvariantInfo) + ":" + pattern;
|
||
|
|
String key = ((int) options).ToString() + ":" + pattern;
|
||
|
|
|
||
|
|
#if REGEX_USE_CACHE
|
||
|
|
cached = LookupCached(key);
|
||
|
|
#else
|
||
|
|
cached = null;
|
||
|
|
#endif
|
||
|
|
this.pattern = pattern;
|
||
|
|
this.roptions = options;
|
||
|
|
|
||
|
|
if (cached == null) {
|
||
|
|
// Parse the input
|
||
|
|
tree = RegexParser.Parse(pattern, roptions);
|
||
|
|
|
||
|
|
// Extract the relevant information
|
||
|
|
capnames = tree._capnames;
|
||
|
|
capslist = tree._capslist;
|
||
|
|
code = RegexWriter.Write(tree);
|
||
|
|
caps = code._caps;
|
||
|
|
capsize = code._capsize;
|
||
|
|
|
||
|
|
InitializeReferences();
|
||
|
|
|
||
|
|
tree = null;
|
||
|
|
#if REGEX_USE_CACHE
|
||
|
|
cachedentry= CacheCode(key);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
caps = cached._caps;
|
||
|
|
capnames = cached._capnames;
|
||
|
|
capslist = cached._capslist;
|
||
|
|
capsize = cached._capsize;
|
||
|
|
code = cached._code;
|
||
|
|
// factory = cached._factory;
|
||
|
|
runnerref = cached._runnerref;
|
||
|
|
replref = cached._replref;
|
||
|
|
refsInitialized = true;
|
||
|
|
|
||
|
|
cachedentry = cached;
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
* Singularity does not support compilation of regular expressions
|
||
|
|
// if the compile option is set, then compile the code if it's not already
|
||
|
|
if (UseOptionC() && factory == null) {
|
||
|
|
factory = Compile(code, roptions);
|
||
|
|
cachedentry.AddCompiled(factory);
|
||
|
|
code = null;
|
||
|
|
}
|
||
|
|
*/
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
// ISerializable constructor
|
||
|
|
private Regex(SerializationInfo info, StreamingContext context) : this(info.GetString("pattern"), (RegexOptions) info.GetInt32("options")) {
|
||
|
|
}
|
||
|
|
|
||
|
|
// ISerializable method
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.ISerializable.GetObjectData"]/*' />
|
||
|
|
/// <internalonly/>
|
||
|
|
void ISerializable.GetObjectData(SerializationInfo si, StreamingContext context) {
|
||
|
|
si.AddValue("pattern", this.ToString());
|
||
|
|
si.AddValue("options", this.Options);
|
||
|
|
}
|
||
|
|
// This method is here for perf reasons: if the call to RegexCompiler is NOT in the
|
||
|
|
// Regex constructor, we don't load RegexCompiler and its reflection classes when
|
||
|
|
// instantiating a non-compiled regex
|
||
|
|
// This method is internal virtual so the jit does not inline it.
|
||
|
|
internal virtual RegexRunnerFactory Compile(RegexCode code, RegexOptions roptions) {
|
||
|
|
return RegexCompiler.Compile(code, roptions);
|
||
|
|
}
|
||
|
|
*/
|
||
|
|
// No refs -> we can release our ref on the cached code
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Finalize"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>[To be supplied.]</para>
|
||
|
|
/// </devdoc>
|
||
|
|
~Regex() {
|
||
|
|
UncacheCode();
|
||
|
|
}
|
||
|
|
|
||
|
|
// Escape metacharacters within the string
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Escape"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Escapes
|
||
|
|
/// a minimal set of metacharacters (\, *, +, ?, |, {, [, (, ), ^, $, ., #, and
|
||
|
|
/// whitespace) by replacing them with their \ codes. This converts a string so that
|
||
|
|
/// it can be used as a constant within a regular expression safely. (Note that the
|
||
|
|
/// reason # and whitespace must be escaped is so the string can be used safely
|
||
|
|
/// within an expression parsed with x mode. If future Regex features add
|
||
|
|
/// additional metacharacters, developers should depend on Escape to escape those
|
||
|
|
/// characters as well.)
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public static String Escape(String str) {
|
||
|
|
if (str==null)
|
||
|
|
throw new ArgumentNullException("str");
|
||
|
|
|
||
|
|
return RegexParser.Escape(str);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Unescape character codes within the string
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Unescape"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Unescapes any escaped characters in the input string.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public static String Unescape(String str) {
|
||
|
|
if (str==null)
|
||
|
|
throw new ArgumentNullException("str");
|
||
|
|
|
||
|
|
return RegexParser.Unescape(str);
|
||
|
|
}
|
||
|
|
|
||
|
|
// True if the regex is leftward
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.RightToLeft"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Indicates whether the regular expression matches from right to
|
||
|
|
/// left.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public bool RightToLeft {
|
||
|
|
get {
|
||
|
|
return UseOptionR();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.ToString"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Returns the regular expression pattern passed into the constructor
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public override string ToString() {
|
||
|
|
return pattern;
|
||
|
|
}
|
||
|
|
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Options"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Returns the options passed into the constructor
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public RegexOptions Options {
|
||
|
|
get { return roptions;}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Returns an array of the group names that are used to capture groups
|
||
|
|
// in the regular expression. Only needed if the regex is not known until
|
||
|
|
// runtime, and one wants to extract captured groups. (Probably unusual,
|
||
|
|
// but supplied for completeness.)
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.GetGroupNames"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// Returns
|
||
|
|
/// the GroupNameCollection for the regular expression. This collection contains the
|
||
|
|
/// set of strings used to name capturing groups in the expression.
|
||
|
|
/// </devdoc>
|
||
|
|
public String[] GetGroupNames() {
|
||
|
|
String[] result;
|
||
|
|
|
||
|
|
if (capslist == null) {
|
||
|
|
int max = capsize;
|
||
|
|
result = new String[max];
|
||
|
|
|
||
|
|
for (int i = 0; i < max; i++) {
|
||
|
|
result[i] = i.ToString(); //Convert.ToString(i);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
result = new String[capslist.Length];
|
||
|
|
|
||
|
|
System.Array.Copy(capslist, 0, result, 0, capslist.Length);
|
||
|
|
}
|
||
|
|
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Returns an array of the group numbers that are used to capture groups
|
||
|
|
// in the regular expression. Only needed if the regex is not known until
|
||
|
|
// runtime, and one wants to extract captured groups. (Probably unusual,
|
||
|
|
// but supplied for completeness.)
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.GetGroupNumbers"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// returns
|
||
|
|
/// the integer group number corresponding to a group name.
|
||
|
|
/// </devdoc>
|
||
|
|
public int[] GetGroupNumbers() {
|
||
|
|
int[] result;
|
||
|
|
|
||
|
|
if (caps == null) {
|
||
|
|
int max = capsize;
|
||
|
|
result = new int[max];
|
||
|
|
|
||
|
|
for (int i = 0; i < max; i++) {
|
||
|
|
result[i] = i;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
result = new int[caps.Count];
|
||
|
|
|
||
|
|
IDictionaryEnumerator de = caps.GetEnumerator();
|
||
|
|
while (de.MoveNext()) {
|
||
|
|
result[(int)de.Value] = (int)de.Key;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Given a group number, maps it to a group name. Note that numbered
|
||
|
|
// groups automatically get a group name that is the decimal string
|
||
|
|
// equivalent of its number.
|
||
|
|
//
|
||
|
|
// Returns null if the number is not a recognized group number.
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.GroupNameFromNumber"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Retrieves a group name that corresponds to a group number.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public String GroupNameFromNumber(int i) {
|
||
|
|
if (capslist == null) {
|
||
|
|
if (i >= 0 && i < capsize)
|
||
|
|
return i.ToString();
|
||
|
|
|
||
|
|
return String.Empty;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
if (caps != null) {
|
||
|
|
Object obj = caps[i];
|
||
|
|
if (obj == null)
|
||
|
|
return String.Empty;
|
||
|
|
|
||
|
|
i = (int)obj;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (i >= 0 && i < capslist.Length)
|
||
|
|
return capslist[i];
|
||
|
|
|
||
|
|
return String.Empty;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Given a group name, maps it to a group number. Note that numbered
|
||
|
|
// groups automatically get a group name that is the decimal string
|
||
|
|
// equivalent of its number.
|
||
|
|
//
|
||
|
|
// Returns -1 if the name is not a recognized group name.
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.GroupNumberFromName"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Returns a group number that corresponds to a group name.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public int GroupNumberFromName(String name) {
|
||
|
|
int result = -1;
|
||
|
|
|
||
|
|
if (name == null)
|
||
|
|
throw new ArgumentNullException("name");
|
||
|
|
|
||
|
|
// look up name if we have a hashtable of names
|
||
|
|
if (capnames != null) {
|
||
|
|
Object ret = capnames[name];
|
||
|
|
|
||
|
|
if (ret == null)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
return(int)ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
// convert to an int if it looks like a number
|
||
|
|
result = 0;
|
||
|
|
for (int i = 0; i < name.Length; i++) {
|
||
|
|
char ch = name[i];
|
||
|
|
|
||
|
|
if (ch > '9' || ch < '0')
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
result *= 10;
|
||
|
|
result += (ch - '0');
|
||
|
|
}
|
||
|
|
|
||
|
|
// return int if it's in range
|
||
|
|
if (result >= 0 && result < capsize)
|
||
|
|
return result;
|
||
|
|
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Static version of simple IsMatch call
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.IsMatch"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Searches the input
|
||
|
|
/// string for one or more occurrences of the text supplied in the pattern
|
||
|
|
/// parameter.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public static bool IsMatch(String input, String pattern) {
|
||
|
|
return new Regex(pattern).IsMatch(input);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Static version of simple IsMatch call
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.IsMatch1"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Searches the input string for one or more occurrences of the text
|
||
|
|
/// supplied in the pattern parameter with matching options supplied in the options
|
||
|
|
/// parameter.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public static bool IsMatch(String input, String pattern, RegexOptions options) {
|
||
|
|
return new Regex(pattern, options).IsMatch(input);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Returns true if the regex finds a match within the specified string
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.IsMatch2"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Searches the input string for one or
|
||
|
|
/// more matches using the previous pattern, options, and starting
|
||
|
|
/// position.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public bool IsMatch(String input) {
|
||
|
|
if (input == null)
|
||
|
|
throw new ArgumentNullException("input");
|
||
|
|
|
||
|
|
return(null == Run(true, -1, input, 0, input.Length, UseOptionR() ? input.Length : 0));
|
||
|
|
}
|
||
|
|
|
||
|
|
// Returns true if the regex finds a match after the specified position
|
||
|
|
// (proceeding leftward if the regex is leftward and rightward otherwise)
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.IsMatch3"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Searches the input
|
||
|
|
/// string for one or more matches using the previous pattern and options, with
|
||
|
|
/// a new starting position.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public bool IsMatch(String input, int startat) {
|
||
|
|
if (input == null)
|
||
|
|
throw new ArgumentNullException("input");
|
||
|
|
|
||
|
|
return(null == Run(true, -1, input, 0, input.Length, startat));
|
||
|
|
}
|
||
|
|
|
||
|
|
// Static version of simple Match call
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Match"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Searches the input string for one or more occurrences of the text
|
||
|
|
/// supplied in the pattern parameter.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public static Match Match(String input, String pattern) {
|
||
|
|
return new Regex(pattern).Match(input);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Static version of simple Match call
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Match1"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Searches the input string for one or more occurrences of the text
|
||
|
|
/// supplied in the pattern parameter. Matching is modified with an option
|
||
|
|
/// string.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public static Match Match(String input, String pattern, RegexOptions options) {
|
||
|
|
return new Regex(pattern, options).Match(input);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Finds the first match for the regular expression starting at the beginning
|
||
|
|
// of the string (or at the end of the string if the regex is leftward)
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Match2"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Matches a regular expression with a string and returns
|
||
|
|
/// the precise result as a RegexMatch object.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public Match Match(String input) {
|
||
|
|
if (input == null)
|
||
|
|
throw new ArgumentNullException("input");
|
||
|
|
|
||
|
|
return Run(false, -1, input, 0, input.Length, UseOptionR() ? input.Length : 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Finds the first match, starting at the specified position
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Match3"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// Matches a regular expression with a string and returns
|
||
|
|
/// the precise result as a RegexMatch object.
|
||
|
|
/// </devdoc>
|
||
|
|
public Match Match(String input, int startat) {
|
||
|
|
if (input == null)
|
||
|
|
throw new ArgumentNullException("input");
|
||
|
|
|
||
|
|
return Run(false, -1, input, 0, input.Length, startat);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Finds the first match, restricting the search to the specified interval of
|
||
|
|
// the char array.
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Match4"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Matches a
|
||
|
|
/// regular expression with a string and returns the precise result as a
|
||
|
|
/// RegexMatch object.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public Match Match(String input, int beginning, int length) {
|
||
|
|
if (input == null)
|
||
|
|
throw new ArgumentNullException("input");
|
||
|
|
|
||
|
|
return Run(false, -1, input, beginning, length, UseOptionR() ? beginning + length : beginning);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Static version of simple Matches call
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Matches"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Returns all the successful matches as if Match were
|
||
|
|
/// called iteratively numerous times.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public static MatchCollection Matches(String input, String pattern) {
|
||
|
|
return new Regex(pattern).Matches(input);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Static version of simple Matches call
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Matches1"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Returns all the successful matches as if Match were called iteratively
|
||
|
|
/// numerous times.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public static MatchCollection Matches(String input, String pattern, RegexOptions options) {
|
||
|
|
return new Regex(pattern, options).Matches(input);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Finds the first match for the regular expression starting at the beginning
|
||
|
|
// of the string Enumerator(or at the end of the string if the regex is leftward)
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Matches2"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Returns
|
||
|
|
/// all the successful matches as if Match was called iteratively numerous
|
||
|
|
/// times.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public MatchCollection Matches(String input) {
|
||
|
|
if (input == null)
|
||
|
|
throw new ArgumentNullException("input");
|
||
|
|
|
||
|
|
return new MatchCollection(this, input, 0, input.Length, UseOptionR() ? input.Length : 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Finds the first match, starting at the specified position
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Matches3"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Returns
|
||
|
|
/// all the successful matches as if Match was called iteratively numerous
|
||
|
|
/// times.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public MatchCollection Matches(String input, int startat) {
|
||
|
|
if (input == null)
|
||
|
|
throw new ArgumentNullException("input");
|
||
|
|
|
||
|
|
return new MatchCollection(this, input, 0, input.Length, startat);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Static version of simple Replace call
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Replace"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Replaces
|
||
|
|
/// all occurrences of the pattern with the <paramref name="replacement"/> pattern, starting at
|
||
|
|
/// the first character in the input string.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public static String Replace(String input, String pattern, String replacement) {
|
||
|
|
return new Regex(pattern).Replace(input, replacement);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Static version of simple Replace call
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Replace1"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Replaces all occurrences of
|
||
|
|
/// the <paramref name="pattern "/>with the <paramref name="replacement "/>
|
||
|
|
/// pattern, starting at the first character in the input string.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public static String Replace(String input, String pattern, String replacement, RegexOptions options) {
|
||
|
|
return new Regex(pattern, options).Replace(input, replacement);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Does the replacement
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Replace2"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Replaces all occurrences of
|
||
|
|
/// the <paramref name="pattern "/> with the <paramref name="replacement"/> pattern, starting at the
|
||
|
|
/// first character in the input string, using the previous patten.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public String Replace(String input, String replacement) {
|
||
|
|
if (input == null)
|
||
|
|
throw new ArgumentNullException("input");
|
||
|
|
|
||
|
|
return Replace(input, replacement, -1, UseOptionR() ? input.Length : 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Does the replacement
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Replace3"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Replaces all occurrences of the (previously defined) <paramref name="pattern "/>with the
|
||
|
|
/// <paramref name="replacement"/> pattern, starting at the first character in the input string.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public String Replace(String input, String replacement, int count) {
|
||
|
|
if (input == null)
|
||
|
|
throw new ArgumentNullException("input");
|
||
|
|
|
||
|
|
return Replace(input, replacement, count, UseOptionR() ? input.Length : 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Does the replacement
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Replace4"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Replaces all occurrences of the <paramref name="pattern "/>with the recent
|
||
|
|
/// <paramref name="replacement"/> pattern, starting at the character position
|
||
|
|
/// <paramref name="startat."/>
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public String Replace(String input, String replacement, int count, int startat) {
|
||
|
|
RegexReplacement repl;
|
||
|
|
|
||
|
|
if (input == null)
|
||
|
|
throw new ArgumentNullException("input");
|
||
|
|
if (replacement == null)
|
||
|
|
throw new ArgumentNullException("replacement");
|
||
|
|
|
||
|
|
// a little code to grab a cached parsed replacement object
|
||
|
|
repl = (RegexReplacement)replref.Get();
|
||
|
|
|
||
|
|
if (repl == null || !repl.Pattern.Equals(replacement)) {
|
||
|
|
repl = RegexParser.ParseReplacement(replacement, caps, capsize, capnames, this.roptions);
|
||
|
|
replref.Cache(repl);
|
||
|
|
}
|
||
|
|
|
||
|
|
return repl.Replace(this, input, count, startat);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Static version of simple Replace call
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Replace5"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Replaces all occurrences of the <paramref name="pattern "/>with the
|
||
|
|
/// <paramref name="replacement"/> pattern
|
||
|
|
/// <paramref name="."/>
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public static String Replace(String input, String pattern, MatchEvaluator evaluator) {
|
||
|
|
return new Regex(pattern).Replace(input, evaluator);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Static version of simple Replace call
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Replace6"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Replaces all occurrences of the <paramref name="pattern "/>with the recent
|
||
|
|
/// <paramref name="replacement"/> pattern, starting at the first character<paramref name="."/>
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public static String Replace(String input, String pattern, MatchEvaluator evaluator, RegexOptions options) {
|
||
|
|
return new Regex(pattern, options).Replace(input, evaluator);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Does the replacement
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Replace7"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Replaces all occurrences of the <paramref name="pattern "/>with the recent
|
||
|
|
/// <paramref name="replacement"/> pattern, starting at the first character
|
||
|
|
/// position<paramref name="."/>
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public String Replace(String input, MatchEvaluator evaluator) {
|
||
|
|
if (input==null)
|
||
|
|
throw new ArgumentNullException("input");
|
||
|
|
|
||
|
|
return Replace(input, evaluator, -1, UseOptionR() ? input.Length : 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Does the replacement
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Replace8"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Replaces all occurrences of the <paramref name="pattern "/>with the recent
|
||
|
|
/// <paramref name="replacement"/> pattern, starting at the first character
|
||
|
|
/// position<paramref name="."/>
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public String Replace(String input, MatchEvaluator evaluator, int count) {
|
||
|
|
if (input==null)
|
||
|
|
throw new ArgumentNullException("input");
|
||
|
|
|
||
|
|
return Replace(input, evaluator, count, UseOptionR() ? input.Length : 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Does the replacement
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Replace9"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Replaces all occurrences of the (previously defined) <paramref name="pattern "/>with
|
||
|
|
/// the recent <paramref name="replacement"/> pattern, starting at the character
|
||
|
|
/// position<paramref name=" startat."/>
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public String Replace(String input, MatchEvaluator evaluator, int count, int startat) {
|
||
|
|
if (input==null)
|
||
|
|
throw new ArgumentNullException("input");
|
||
|
|
|
||
|
|
return RegexReplacement.Replace(evaluator, this, input, count, startat);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Static version of simple Split call
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Split"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Splits the <paramref name="input "/>string at the position defined
|
||
|
|
/// by <paramref name="pattern"/>.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public static String[] Split(String input, String pattern) {
|
||
|
|
return new Regex(pattern).Split(input);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Static version of simple Split call
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Split1"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Splits the <paramref name="input "/>string at the position defined by <paramref name="pattern"/>.
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public static String[] Split(String input, String pattern, RegexOptions options) {
|
||
|
|
return new Regex(pattern, options).Split(input);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Does a split
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Split2"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Splits the <paramref name="input "/>string at the position defined by
|
||
|
|
/// a previous <paramref name="pattern"/>
|
||
|
|
/// .
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public String[] Split(String input) {
|
||
|
|
if (input==null)
|
||
|
|
throw new ArgumentNullException("input");
|
||
|
|
|
||
|
|
return Split(input, 0, UseOptionR() ? input.Length : 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Does a split
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Split3"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Splits the <paramref name="input "/>string at the position defined by a previous
|
||
|
|
/// <paramref name="pattern"/> .
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public String[] Split(String input, int count) {
|
||
|
|
if (input==null)
|
||
|
|
throw new ArgumentNullException("input");
|
||
|
|
|
||
|
|
return RegexReplacement.Split(this, input, count, UseOptionR() ? input.Length : 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Does a split
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Split4"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// <para>
|
||
|
|
/// Splits the <paramref name="input "/>string at the position defined by a previous
|
||
|
|
/// <paramref name="pattern"/> .
|
||
|
|
/// </para>
|
||
|
|
/// </devdoc>
|
||
|
|
public String[] Split(String input, int count, int startat) {
|
||
|
|
if (input==null)
|
||
|
|
throw new ArgumentNullException("input");
|
||
|
|
|
||
|
|
return RegexReplacement.Split(this, input, count, startat);
|
||
|
|
}
|
||
|
|
|
||
|
|
#if COMPILE
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.CompileToAssembly"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// </devdoc>
|
||
|
|
public static void CompileToAssembly(RegexCompilationInfo[] regexinfos, AssemblyName assemblyname) {
|
||
|
|
CompileToAssembly(regexinfos, assemblyname, null, null);
|
||
|
|
}
|
||
|
|
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.CompileToAssembly1"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// </devdoc>
|
||
|
|
public static void CompileToAssembly(RegexCompilationInfo[] regexinfos, AssemblyName assemblyname, CustomAttributeBuilder[] attributes) {
|
||
|
|
CompileToAssembly(regexinfos, assemblyname, attributes, null);
|
||
|
|
}
|
||
|
|
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.CompileToAssembly2"]/*' />
|
||
|
|
public static void CompileToAssembly(RegexCompilationInfo[] regexinfos, AssemblyName assemblyname, CustomAttributeBuilder[] attributes, String resourceFile) {
|
||
|
|
if (assemblyname == null)
|
||
|
|
throw new ArgumentNullException("assemblyname");
|
||
|
|
|
||
|
|
if (regexinfos == null)
|
||
|
|
throw new ArgumentNullException("regexinfos");
|
||
|
|
|
||
|
|
RegexCompiler.CompileToAssembly(regexinfos, assemblyname, attributes, resourceFile);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.InitializeReferences"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// </devdoc>
|
||
|
|
protected void InitializeReferences() {
|
||
|
|
if (refsInitialized)
|
||
|
|
throw new NotSupportedException("Only Allowed Once");//XXX: SR.GetString(SR.OnlyAllowedOnce));
|
||
|
|
|
||
|
|
refsInitialized = true;
|
||
|
|
runnerref = new ExclusiveReference();
|
||
|
|
replref = new SharedReference();
|
||
|
|
}
|
||
|
|
|
||
|
|
// Internal worker called by all the public APIs
|
||
|
|
internal Match Run(bool quick, int prevlen, String input, int beginning, int length, int startat) {
|
||
|
|
Match match;
|
||
|
|
RegexRunner runner = null;
|
||
|
|
|
||
|
|
if (startat < 0 || startat > input.Length)
|
||
|
|
throw new ArgumentOutOfRangeException("start", ""); //XXX: SR.GetString(SR.BeginIndexNotNegative));
|
||
|
|
|
||
|
|
if (length < 0 || length > input.Length)
|
||
|
|
throw new ArgumentOutOfRangeException("length", ""); //XXX: SR.GetString(SR.LengthNotNegative));
|
||
|
|
|
||
|
|
// There may be a cached runner; grab ownership of it if we can.
|
||
|
|
|
||
|
|
runner = (RegexRunner)runnerref.Get();
|
||
|
|
|
||
|
|
// Create a RegexRunner instance if we need to
|
||
|
|
|
||
|
|
if (runner == null) {
|
||
|
|
// Use the compiled RegexRunner factory if the code was compiled to MSIL
|
||
|
|
|
||
|
|
// if (factory != null)
|
||
|
|
// runner = factory.CreateInstance();
|
||
|
|
// else
|
||
|
|
runner = new RegexInterpreter(code, UseOptionInvariant() ? CultureInfo.InvariantCulture : CultureInfo.CurrentCulture);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Do the scan starting at the requested position
|
||
|
|
|
||
|
|
match = runner.Scan(this, input, beginning, beginning + length, startat, prevlen, quick);
|
||
|
|
|
||
|
|
// Release or fill the cache slot
|
||
|
|
|
||
|
|
runnerref.Release(runner);
|
||
|
|
|
||
|
|
#if DBG
|
||
|
|
if (UseOptionDebug())
|
||
|
|
match.Dump();
|
||
|
|
#endif
|
||
|
|
return match;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Find code cache based on options+pattern
|
||
|
|
private static CachedCodeEntry LookupCached(String key) {
|
||
|
|
CachedCodeEntry cached;
|
||
|
|
|
||
|
|
lock (livecode) {
|
||
|
|
cached = (CachedCodeEntry)livecode[key];
|
||
|
|
if (cached != null)
|
||
|
|
cached.AddRef();
|
||
|
|
}
|
||
|
|
|
||
|
|
return cached;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Add current code to the cache
|
||
|
|
private CachedCodeEntry CacheCode(String key) {
|
||
|
|
CachedCodeEntry newcached;
|
||
|
|
|
||
|
|
newcached = new CachedCodeEntry(roptions, capnames, capslist, code, caps, capsize, runnerref, replref);
|
||
|
|
|
||
|
|
lock (livecode) {
|
||
|
|
livecode[key] = newcached;
|
||
|
|
}
|
||
|
|
|
||
|
|
return newcached;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Release current code (and remove from cache if last ref)
|
||
|
|
private void UncacheCode() {
|
||
|
|
// Note that cachedentry can be null if the constructor never
|
||
|
|
// completed because of an exception. The finalizer can
|
||
|
|
// still be called.
|
||
|
|
|
||
|
|
if (cachedentry == null)
|
||
|
|
return;
|
||
|
|
|
||
|
|
cachedentry.Release();
|
||
|
|
//XXX: String key = ((int) roptions).ToString(NumberFormatInfo.InvariantInfo) + ":" + pattern;
|
||
|
|
|
||
|
|
String key = ((int) roptions).ToString() + ":" + pattern;
|
||
|
|
|
||
|
|
if (cachedentry.NoReferences()) {
|
||
|
|
lock (livecode) {
|
||
|
|
if (cachedentry.NoReferences()) {
|
||
|
|
if (livecode[key] == cachedentry)
|
||
|
|
livecode.Remove(key);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// True if the O option was set
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.UseOptionC"]/*' />
|
||
|
|
/// <internalonly/>
|
||
|
|
/// <devdoc>
|
||
|
|
/// </devdoc>
|
||
|
|
protected bool UseOptionC() {
|
||
|
|
return(roptions & RegexOptions.Compiled) != 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// True if the L option was set
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.UseOptionR"]/*' />
|
||
|
|
/// <internalonly/>
|
||
|
|
/// <devdoc>
|
||
|
|
/// </devdoc>
|
||
|
|
protected bool UseOptionR() {
|
||
|
|
return(roptions & RegexOptions.RightToLeft) != 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
internal bool UseOptionInvariant() {
|
||
|
|
return(roptions & RegexOptions.CultureInvariant) != 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#if DBG
|
||
|
|
// True if the regex has debugging enabled
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Debug"]/*' />
|
||
|
|
/// <internalonly/>
|
||
|
|
/// <devdoc>
|
||
|
|
/// </devdoc>
|
||
|
|
public virtual bool Debug {
|
||
|
|
get {
|
||
|
|
return UseOptionDebug();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// True if the Debug option was set
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.UseOptionDebug"]/*' />
|
||
|
|
/// <internalonly/>
|
||
|
|
/// <devdoc>
|
||
|
|
/// </devdoc>
|
||
|
|
protected bool UseOptionDebug() {
|
||
|
|
return(roptions & RegexOptions.Debug) != 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Dump"]/*' />
|
||
|
|
/// <internalonly/>
|
||
|
|
/// <devdoc>
|
||
|
|
/// </devdoc>
|
||
|
|
public virtual String Dump() {
|
||
|
|
String key = roptions + ":" + pattern;
|
||
|
|
if (key[0] == ':')
|
||
|
|
return key.Substring(1, key.Length - 1);
|
||
|
|
|
||
|
|
return key;
|
||
|
|
}
|
||
|
|
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="Regex.Dump1"]/*' />
|
||
|
|
/// <internalonly/>
|
||
|
|
/// <devdoc>
|
||
|
|
/// </devdoc>
|
||
|
|
public virtual String Dump(String indent) {
|
||
|
|
return indent + Dump() + "\n";
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// Callback class
|
||
|
|
//| <include file='doc\Regex.uex' path='docs/doc[@for="MatchEvaluator"]/*' />
|
||
|
|
/// <devdoc>
|
||
|
|
/// </devdoc>
|
||
|
|
//[ Serializable() ]
|
||
|
|
public delegate String MatchEvaluator(Match match);
|
||
|
|
|
||
|
|
|
||
|
|
// Used to cache byte codes or compiled factories
|
||
|
|
internal sealed class CachedCodeEntry {
|
||
|
|
internal int _references;
|
||
|
|
|
||
|
|
internal RegexCode _code;
|
||
|
|
internal RegexOptions _options;
|
||
|
|
internal Hashtable _caps;
|
||
|
|
internal Hashtable _capnames;
|
||
|
|
internal String[] _capslist;
|
||
|
|
internal int _capsize;
|
||
|
|
//internal RegexRunnerFactory _factory;
|
||
|
|
internal ExclusiveReference _runnerref;
|
||
|
|
internal SharedReference _replref;
|
||
|
|
|
||
|
|
internal CachedCodeEntry(RegexOptions options, Hashtable capnames, String[] capslist, RegexCode code, Hashtable caps, int capsize, ExclusiveReference runner, SharedReference repl) {
|
||
|
|
|
||
|
|
_options = options;
|
||
|
|
_capnames = capnames;
|
||
|
|
_capslist = capslist;
|
||
|
|
|
||
|
|
_code = code;
|
||
|
|
_caps = caps;
|
||
|
|
_capsize = capsize;
|
||
|
|
|
||
|
|
_runnerref = runner;
|
||
|
|
_replref = repl;
|
||
|
|
|
||
|
|
_references = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
internal CachedCodeEntry AddRef() {
|
||
|
|
lock (this) {
|
||
|
|
_references += 1;
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
internal void Release() {
|
||
|
|
lock (this) {
|
||
|
|
_references -= 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
internal bool NoReferences() {
|
||
|
|
return(_references == 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
internal void AddCompiled(RegexRunnerFactory factory) {
|
||
|
|
lock (this) {
|
||
|
|
_code = null;
|
||
|
|
_factory = factory;
|
||
|
|
_references += 1; // will never be balanced since we never unload the type
|
||
|
|
}
|
||
|
|
}
|
||
|
|
*/
|
||
|
|
}
|
||
|
|
|
||
|
|
// Used to cache one exclusive weak reference
|
||
|
|
internal sealed class ExclusiveReference {
|
||
|
|
WeakReference _ref = new WeakReference(null);
|
||
|
|
Object _obj;
|
||
|
|
int _locked;
|
||
|
|
|
||
|
|
// Return an object and grab an exclusive lock.
|
||
|
|
//
|
||
|
|
// If the exclusive lock can't be obtained, null is returned;
|
||
|
|
// if the object can't be returned, the lock is released.
|
||
|
|
//
|
||
|
|
// Note that _ref.Target is referenced only under the protection
|
||
|
|
// of the lock. (Is this necessary?)
|
||
|
|
internal Object Get() {
|
||
|
|
// try to obtain the lock
|
||
|
|
|
||
|
|
if (0 == Interlocked.Exchange(ref _locked, 1)) {
|
||
|
|
// grab reference
|
||
|
|
|
||
|
|
Object obj = _ref.Target;
|
||
|
|
|
||
|
|
// release the lock and return null if no reference
|
||
|
|
|
||
|
|
if (obj == null) {
|
||
|
|
_locked = 0;
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
// remember the reference and keep the lock
|
||
|
|
|
||
|
|
_obj = obj;
|
||
|
|
return obj;
|
||
|
|
}
|
||
|
|
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Release an object back to the cache
|
||
|
|
//
|
||
|
|
// If the object is the one that's under lock, the lock
|
||
|
|
// is released.
|
||
|
|
//
|
||
|
|
// If there is no cached object, then the lock is obtained
|
||
|
|
// and the object is placed in the cache.
|
||
|
|
//
|
||
|
|
// Note that _ref.Target is referenced only under the protection
|
||
|
|
// of the lock. (Is this necessary?)
|
||
|
|
internal void Release(Object obj) {
|
||
|
|
if (obj == null)
|
||
|
|
throw new ArgumentNullException("obj");
|
||
|
|
|
||
|
|
// if this reference owns the lock, release it
|
||
|
|
|
||
|
|
if (_obj == obj) {
|
||
|
|
_obj = null;
|
||
|
|
_locked = 0;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// if no reference owns the lock, try to cache this reference
|
||
|
|
|
||
|
|
if (_obj == null) {
|
||
|
|
// try to obtain the lock
|
||
|
|
|
||
|
|
if (0 == Interlocked.Exchange(ref _locked, 1)) {
|
||
|
|
// if there's really no reference, cache this reference
|
||
|
|
|
||
|
|
if (_ref.Target == null)
|
||
|
|
_ref.Target = obj;
|
||
|
|
|
||
|
|
// release the lock
|
||
|
|
|
||
|
|
_locked = 0;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Used to cache a weak reference in a threadsafe way
|
||
|
|
internal sealed class SharedReference {
|
||
|
|
WeakReference _ref = new WeakReference(null);
|
||
|
|
int _locked;
|
||
|
|
|
||
|
|
// Return an object from a weakref, protected by a lock.
|
||
|
|
//
|
||
|
|
// If the exclusive lock can't be obtained, null is returned;
|
||
|
|
//
|
||
|
|
// Note that _ref.Target is referenced only under the protection
|
||
|
|
// of the lock. (Is this necessary?)
|
||
|
|
internal Object Get() {
|
||
|
|
if (0 == Interlocked.Exchange(ref _locked, 1)) {
|
||
|
|
Object obj = _ref.Target;
|
||
|
|
_locked = 0;
|
||
|
|
return obj;
|
||
|
|
}
|
||
|
|
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Suggest an object into a weakref, protected by a lock.
|
||
|
|
//
|
||
|
|
// Note that _ref.Target is referenced only under the protection
|
||
|
|
// of the lock. (Is this necessary?)
|
||
|
|
internal void Cache(Object obj) {
|
||
|
|
if (0 == Interlocked.Exchange(ref _locked, 1)) {
|
||
|
|
_ref.Target = obj;
|
||
|
|
_locked = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|