class RuboCop::Cop::Metrics::CyclomaticComplexity
This cop checks that the cyclomatic complexity of methods is not higher than the configured maximum. The cyclomatic complexity is the number of linearly independent paths through a method. The algorithm counts decision points and adds one.
An if statement (or unless or ?:) increases the complexity by one. An else branch does not, since it doesn't add a decision point. The && operator (or keyword and) can be converted to a nested if statement, and ||/or is shorthand for a sequence of ifs, so they also add one. Loops can be said to have an exit condition, so they add one.
Constants
- COUNTED_NODES
- MSG
Private Instance Methods
complexity_score_for(_node)
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# File lib/rubocop/cop/metrics/cyclomatic_complexity.rb, line 25 def complexity_score_for(_node) 1 end