howmessy

howmessy is a Visual Studio extension to display code metrics in CodeLens. The following metrics are supported.

• Cognitive Complexity
• Cyclomatic Complexity
• Maintainability Index
• Lines of Code

Options

Support Versions

• Visual Studio 2022

CLI tool

howmessy provides a CLI tool for calculating metrics.

Usage:

$ howmessy --help
howmessy 1.0.0
Copyright (C) 2022 howmessy

  -m, --metrics    Required. Metrics type to analyze (cognitive/cyclomatic/mi/loc).

  -t, --target     Fully qualified method name to analyze.

  -f, --format     Output format.

  --help           Display this help screen.

  --version        Display version information.

  path (pos. 0)    Required. File path to analyze.

Sample:

$ cat ./Sample.cs
namespace HowmessySample

public class Sample
{
    public void Main(string input)
    {
        if (!string.IsNullOrWhiteSpace(input))
        {
            // output
            Console.WriteLine(input);
        }
    }
}

$ howmessy ./Sample.cs --metrics cognitive,cyclomatic,mi,loc
[
  {
    "Name": "HowmessySample.Sample.Main(string input)",
    "CognitiveComplexity": 1,
    "CyclomaticComplexity": 2,
    "MaintainabilityIndex": 76,
    "LinesOfCode": {
      "Physical": 5,
      "Logical": 4
    }
  }
]

Acknowledgment

This software was inspired by the following repositories.

• matkoch/resharper-cognitivecomplexity
• bert2/microscope: CodeLens extension for Visual Studio that lets you inspect the intermediate language instructions of methods and properties.

Author

• Takumi Yamada (Twitter: @tackme31)

License

This software is licensed under the MIT license. See LICENSE.