Function Body Length

Function bodies should not span too many lines

• Identifier: function_body_length
• Enabled by default: Yes
• Supports autocorrection: No
• Kind: metrics
• Analyzer rule: No
• Minimum Swift compiler version: 5.0.0
• Default configuration:

  Key	Value
  warning	50
  error	100

Non Triggering Examples

//
// warning: 2
//

func f() {}

//
// warning: 2
//

func f() {
    let x = 0
}

//
// warning: 2
//

func f() {
    let x = 0
    let y = 1
}

//
// warning: 2
//

func f() {
    let x = 0
    // comments
    // will
    // be
    // ignored
}

//
// warning: 2
//

    func f() {
        let x = 0
        // empty lines will be ignored


    }

Triggering Examples

//
// warning: 2
//

↓func f() {
    let x = 0
    let y = 1
    let z = 2
}

//
// warning: 2
//

class C {
    ↓deinit {
        let x = 0
        let y = 1
        let z = 2
    }
}

//
// warning: 2
//

class C {
    ↓init() {
        let x = 0
        let y = 1
        let z = 2
    }
}

//
// warning: 2
//

class C {
    ↓subscript() -> Int {
        let x = 0
        let y = 1
        return x + y
    }
}

//
// warning: 2
//

struct S {
    subscript() -> Int {
        ↓get {
            let x = 0
            let y = 1
            return x + y
        }
        ↓set {
            let x = 0
            let y = 1
            let z = 2
        }
        ↓willSet {
            let x = 0
            let y = 1
            let z = 2
        }
    }
}