File Metrics for Rust

This document outlines the definition of file metrics for Rust.

complexity

The "complexity" metric counts:

if and else if statements
for ..., while ... and loop {...} loops

match arms in match-statements:

match ... {
    <match arm value> => println!("Hello"),
    _ => println!("Hallo"),
}

or patterns in match arm: |
logical binary operations && and ||
everything counted for the "functions" metric

functions

The "functions" metric counts:

method and function definitions: fn ...

classes

The "classes" metric counts:

struct and trait definitions: struct ..., trait ...

It does not count:

implementations on types: impl ...

lines_of_code, comment_lines, real_lines_of_code and keywords_in_comments