Regex for Method Calls inside of ASP markup pages by C#

Question

I need a regex pattern to find any kind of method calls in both Asp Markup pages (webform .aspx) and (MVC cshtml) by c#.

I am looking for a pattern to cover almost possibilities like these:

1)     MethodName1()

2)     ClassName.MethodName2(prm1,prm2,...)

3)     new ClassName.Obj1.Obj2.Method3(...)

4)    [new] [AnyThing].[anthing].[anything]([anything])

5)     MethodName1().ToString() 
 ....

here is my code, the content of file is markup text file.

 int counter = 0;
 string line;
 var regex = new Regex(@"*[a-zA-Z].{1}+*[a-zA-Z](+*[a-zA-Z])+"); //??????

 // Read the asp markup file and parse it line by line.
 var file = new System.IO.StreamReader(path);
 while ((line = file.ReadLine()) != null)
    {                    
      var match = regex.Match(line);
      if (match.Success)
         {
            //Do sth
         }
      counter++;
    }
 file.Close();

Regular expressions aren't the best solution for this, you'll run into issues with nested method calls, eg. Method1(Method2(...)). See this for more about Regex and nested structures. A better way would be to use something like ANTLR Also see this, it's about HTML but should give you the general idea — amura.cxg
– amura.cxg, Commented May 6, 2016 at 17:04

Scott Weaver · Accepted Answer · 2016-05-09 18:29:39Z

2

try this regular expression, it also adds some named groups of the form(?<groupname>regex), accessed like: myMatch.Groups["myGroupName"].Value:

(?:\[?new]?)?\s*(?<source>(?:\[?\w+\]?\.)*)\[?(?<method>\w+)\]?\((?<args>\[?.*?\]?)\)

input/output: (online demo here)

edited May 9, 2016 at 18:29

answered May 6, 2016 at 17:03

Scott Weaver

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