Nested switch structures are difficult to understand because you can easily confuse the cases of an inner switch as
belonging to an outer statement or expression. Therefore nested switch statements and expressions should be avoided.
Specifically, you should structure your code to avoid the need for nested switch statements or expressions, but if you cannot, then
consider moving the inner switch to another method.
Noncompliant code example
void foo(int n, int m) {
switch (n) {
case 0:
switch (m) { // Noncompliant; nested switch
// ...
}
case 1:
// ...
default:
// ...
}
}
Compliant solution
void foo(int n, int m) {
switch (n) {
case 0:
bar(m);
case 1:
// ...
default:
// ...
}
}
void bar(int m){
switch(m) {
// ...
}
}
