rspec/rules/S1821/vbnet/rule.adoc

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2021-01-27 13:42:22 +01:00
Nested ``++Select Case++`` structures are difficult to understand because you can easily confuse the cases of an inner ``++Select Case++`` as belonging to an outer statement. Therefore nested ``++Select Case++`` statements should be avoided.
2021-01-27 13:42:22 +01:00
Specifically, you should structure your code to avoid the need for nested ``++Select Case++`` statements, but if you cannot, then consider moving the inner ``++Select Case++`` to another function.
== Noncompliant Code Example
----
Public Sub Foo(A As Integer, B As Integer)
Select Case A
Case 0
' ...
Case 1
Select Case B ' Noncompliant; nested Select Case
Case 2
' ...
Case 3
' ...
Case 4
' ...
Case Else
' ...
End Select
Case 2
' ...
Case Else
' ...
End Select
End Sub
----
== Compliant Solution
----
Public Sub Foo(A As Integer, B As Integer)
Select Case A
Case 0
' ...
Case 1
HandleB(B)
Case 2
' ...
Case Else
' ...
End Select
End Sub
----