Dart software metrics

[Mukhammadjon Jalolov]

Hello everyone! Is there any tools for Dart language to extract software metrics e.g. Mainainability Index, Cyclomatic Complexity, Halstead metrics etc.? From a Dart source code? Thanks much!

[Brian Wilkerson]

The analyzer doesn't have any direct support for metrics, though metrics could certainly be computed based on the results of analysis.

That said, this is a fairly specialized list focused on the analyzer and analysis server. You might want to re-post this to a larger group, such as `mi...@dartlang.org`, to see whether someone in the larger Dart community has done anything along those lines.

On Fri, Apr 27, 2018 at 1:52 PM, Mukhammadjon Jalolov <mjalol...@gmail.com> wrote:

Hello everyone! Is there any tools for Dart language to extract software metrics e.g. Mainainability Index, Cyclomatic Complexity, Halstead metrics etc.? From a Dart source code? Thanks much!

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[Alexei Diaz]

Hi all,

I started a prototype last year, it has a few method and class metrics https://github.com/alexeieleusis/dart-lang_linter/commits/elastograph, heavily inspired by NDepend, it is in very early stages and I haven't worked on it for at least 5 months. Still I think the metrics it computes are already useful, I started it with the linter code base for convenience but its use case is so different that I will fork it or start a new project from scratch. If you are really interested in trying it, we can start a conversation offline so I can explain to you how to use it, I need to push code from my working copy.

The following metrics are implemented:

• Class level:
• Depth of inheritance tree.
• Field count.
• Implemented interfaces count.
• Lack of cohesion methods.
• LCOM HS.
• Method count.
• Method level:
• Assignment count.
• Free variables mutation count.
• Mutable variables count.
• Nesting depth.
• Optional parameters count.
• Parameters count.
• Variables count.
• Both levels:
• Afferent coupling.
• Cyclomatic complexity.
• Efferent coupling.
• Statement count.

If you look at the code you will notice that only the method level metrics are on github, this is because I mixed the code with a statistical analysis (on the static analysis report) for a big codebase trying to understand which metrics shed more light on possible bugs. Also there is a bug in the underlying infrastructure (linter or analyzer I don't remember) that prevents some of the metrics from being computed. But as I said above, if you are interested in using it, I can clean it up and push the code to github, I must warn that reading the report is an effort by itself, but there are plans to improve it.

Best

Alexei

On Friday, April 27, 2018 at 2:30:34 PM UTC-7, brianwilkerson wrote:

The analyzer doesn't have any direct support for metrics, though metrics could certainly be computed based on the results of analysis.

That said, this is a fairly specialized list focused on the analyzer and analysis server. You might want to re-post this to a larger group, such as `mi...@dartlang.org`, to see whether someone in the larger Dart community has done anything along those lines.

On Fri, Apr 27, 2018 at 1:52 PM, Mukhammadjon Jalolov <mjalol...@gmail.com> wrote:

Hello everyone! Is there any tools for Dart language to extract software metrics e.g. Mainainability Index, Cyclomatic Complexity, Halstead metrics etc.? From a Dart source code? Thanks much!

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To unsubscribe from this group and stop receiving emails from it, send an email to analyzer-discu...@dartlang.org.

[Mukhammadjon Jalolov]

Yes that would be great! I very need to compute metrics for my Diploma Project. How Can we contact offline? I just need to get metric results from my Dart Code. Even though with not perfect results.

Thanks!

[Shan Khinda]

Hey is there any way you would be able to help me out on this? I needed to compute the LCOM for my files.