using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?(DEFINE)
(?<block>
\{ # Match opening brace
(?: # Start non-capturing group
[^{}]++ # Match non-brace characters without backtracking
| # or
(?&block) # Recursively match the last captured group
)* # Match 0 or more times
\} # Match closing brace
)
)(.+?)(?&block)(.+)";
string input = @"use strict;
use warnings;
my $text = << ""END"";
int max(int x, int y)
{
if (x > y)
{
return x;
}
else
{
return y;
}
}
// something here
";
RegexOptions options = RegexOptions.IgnorePatternWhitespace | RegexOptions.Singleline;
foreach (Match m in Regex.Matches(input, pattern, options))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx