File Metrics for Ruby

This document outlines the definition of file metrics for Ruby.

complexity

The "complexity" metric counts:

if and elsif statements
for..., <array>.each do ...,while... and until... loops
when ... labels in case-statements
rescue labels in begin ... rescue ... blocks
everything counted for the "functions" metric

functions

The "functions" metric counts:

method and function definitions: def ...
lambda functions: ->(x) { ... }

classes

The "classes" metric counts:

class definitions: class ...

lines_of_code, comment_lines, real_lines_of_code and keywords_in_comments