Code Metric Tools for Haskell

Question

Is there any tool for measuring the code metrics like LOC(line of code), number of functions and average size of functions for Haskell programs?

Answer 1

Ohcount, the tool used by ohloh, at least knows how to tell Haskell comment lines from Haskell code lines apart, as you can see for example in the statistics for GHC.

Answer 2

Apart from the mentioned HLint for code style checking, there are not that many mature tools as in other language ecosystems. I would point out the following tools in development:

• homplexity: this project "aims to assess complexity and quality of Haskell code by measuring relative length of declarations, their depth, and code-to-comment ratio".
• argon: it computes cyclomatic complexity.