The case statement should be used only to clearly define some new branches in the control flow. As soon as a when clause
contains too many statements this highly decreases the readability of the overall control flow statement. In such case, the content of the case clause
should be extracted into a dedicated function.
Noncompliant code example
With the threshold set at 5:
case myVariable
when 0 then # Noncompliant: 6 lines till next "when"
methodCall1("")
methodCall2("")
methodCall3("")
methodCall4("")
methodCall5("")
methodCall6("")
when 1
# ...
end
Compliant solution
case myVariable
when 0 then
doSomething()
when 1
# ...
end
...
def doSomething()
methodCall1("")
methodCall2("")
methodCall3("")
methodCall4("")
methodCall5("")
methodCall6("")
end
