using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^(?<tag>(?:[a-zA-Z]\w*|_\w+))(?<memspec>(?:(?:(?:\s*\.(?:[a-zA-Z]\w*|_\w+)|(?:\s*\[(?:[^,\]]+)(?:,(?:[^,\]]+))*\]))*)(?:(?:\s*\.\d+|\.\s*(?:\s*\[(?:[^,\]]+)\]))?)))?(?<metadataspec>(?:\s*\.\@(?<metadataid>(?:[a-zA-Z]\w*|_\w+))(?<metadatamemspec>(?:(?:(?:\s*\.(?:[a-zA-Z]\w*|_\w+)|(?:\s*\[(?:[^,\]]+)(?:,(?:[^,\]]+))*\]))*)(?:(?:\s*\.\d+|\.\s*(?:\s*\[(?:[^,\]]+)\]))?)))?))?$";
string input = @"tag
tag.mem
tag.1
tag.[0]
tag[0]
tag[0].mem
tag[0].1
tag[0].[0]
tag.mem
tag.mem.mem
tag.mem.1
tag.mem.[0]
tag.mem[0]
tag.mem[0].mem
tag.mem[0].1
tag.mem[0].[0]
tag.@foo.mem[0].[0]
tag.mem.@foo.mem[0].[0]
tag.1.@foo.mem[0].[0]
tag.[0].@foo.mem[0].[0]
tag[0].@foo.mem[0].[0]
tag[0].mem.@foo.mem[0].[0]
tag[0].1.@foo.mem[0].[0]
tag[0].[0].@foo.mem[0].[0]
tag.mem.@foo.mem[0].[0]
tag.mem.mem.@foo.mem[0].[0]
tag.mem.1.@foo.mem[0].[0]
tag.mem.[0].@foo.mem[0].[0]
tag.mem[0].@foo.mem[0].[0]
tag.mem[0].mem.@foo.mem[0].[0]
tag.mem[0].1.@foo.mem[0].[0]
tag.mem[0].[0].@foo.mem[0].[0]
tag .mem [ tag.@foo ] .mem .@foo .mem [ 0 ] .a .1
";
RegexOptions options = RegexOptions.Multiline;
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