readability-trivial-switch

Finds trivial switch statements that can be written more clearly.

Every switch statement should have at least two case labels other than a default label. Otherwise, the switch can be better expressed with an if statement. switch statements without any labels are diagnosed as well.

int i = 42;

switch (i) {
case 1:
  doSomething();
  break;
default:
  doSomethingElse();
  break;
}

// The switch can be written more clearly as:
if (i == 1) {
  doSomething();
} else {
  doSomethingElse();
}

// The switch without any labels will be diagnosed.
int i = 42;
switch (i) {}