class RuboCop::Cop::Style::TernaryParentheses

def message(node)
  if require_parentheses_when_complex?
    command = parenthesized?(node.condition) ? 'Only use' : 'Use'
    format(MSG_COMPLEX, command: command)
  else
    command = require_parentheses? ? 'Use' : 'Omit'
    format(MSG, command: command)
  end
end