Complexity directly affects maintenance costs is determined by the number of decision points in a method plus one for the method entry. The decision points include 'if', 'while', 'for', and 'case labels' calls. Generally, numbers ranging from 1-4 denote low complexity, 5-7 denote moderate complexity, 8-10 denote high complexity, and 11+ is very high complexity.

This rule is deprecated, use {rule:squid:MethodCyclomaticComplexity} or {rule:squid:ClassCyclomaticComplexity} instead.