Empty Enum Arguments

Arguments can be omitted when matching enums with associated types if they are not used.

• Identifier: empty_enum_arguments
• Enabled by default: Enabled
• Supports autocorrection: Yes
• Kind: style
• Analyzer rule: No
• Minimum Swift compiler version: 3.0.0
• Default configuration: warning

Non Triggering Examples

switch foo {
case .bar: break
}

switch foo {
case .bar(let x): break
}

switch foo {
case let .bar(x): break
}

switch (foo, bar) {
case (_, _): break
}

switch foo {
case "bar".uppercased(): break
}

switch (foo, bar) {
case (_, _) where !something: break
}

switch foo {
case (let f as () -> String)?: break
}

switch foo {
default: break
}

Triggering Examples

switch foo {
case .bar↓(_): break
}

switch foo {
case .bar↓(): break
}

switch foo {
case .bar↓(_), .bar2↓(_): break
}

switch foo {
case .bar↓() where method() > 2: break
}

func example(foo: Foo) {
    switch foo {
    case case .bar↓(_):
        break
    }
}