switch_case_alignment.md

Pattern: Misaligned switch and case

Issue: -

Description

case statements should vertically align with the enclosing switch statement.

Examples of correct code:

switch someBool {
case true: // case 1
    print('red')
case false:
    /*
    case 2
    */
    if case let .someEnum(val) = someFunc() {
        print('blue')
    }
}
enum SomeEnum {
    case innocent
}


if aBool {
    switch someBool {
    case true:
        print('red')
    case false:
        print('blue')
    }
}


switch someInt {
// comments ignored
case 0:
    // zero case
    print('Zero')
case 1:
    print('One')
default:
    print('Some other number')
}

Examples of incorrect code:

switch someBool {
    ↓case true:
         print('red')
    ↓case false:
         print('blue')
}


if aBool {
    switch someBool {
        ↓case true:
            print('red')
    case false:
        print('blue')
    }
}


switch someInt {
    ↓case 0:
    print('Zero')
case 1:
    print('One')
    ↓default:
    print('Some other number')
}

Further Reading

• SwiftLint - Switch and Case Statement Alignment