Swift Cognitive Complexity

Measure and reduce Cognitive Complexity in Swift code per G. Ann Campbell's paper (SonarSource, 2023).

Cognitive Complexity measures mental effort to understand code — not just path count (Cyclomatic Complexity). Deeply nested code costs more than flat code with the same branch count.

Arguments

The user provided: $ARGUMENTS

If a file path is given — read it. If no arguments — ask the user to paste the code or specify a file.

Scoring Rules

A — Structural increments (+1 each, plus nesting penalty)

These structures break linear flow and add nesting: