Optional Data -> String Conversion

Prefer failable String(bytes:encoding:) initializer when converting Data to String

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

  Key	Value
  severity	warning
  allow_implicit_init	false

Non Triggering Examples

String(data: data, encoding: .utf8)

String(bytes: data, encoding: .utf8)

String(UTF8.self)

String(a, b, c, UTF8.self)

String(decoding: data, encoding: UTF8.self)

String(data: data, encoding: .ascii)

String(bytes: data, encoding: .utf16LittleEndian)

String(decoding: data, as: UTF16.self)

String.init(bytes: data, encoding: .utf8)

let text: String = .init(bytes: data, encoding: .utf8)

let text: String = .init(data)

let text: Int = .init(decoding: data, as: UTF8.self)

let n: Int = .init(0)

String(repeating: "a", count: 3)

String(format: "%d", 3)

let text = .init(decoding: data, as: UTF8.self)

Triggering Examples

↓String(decoding: data, as: UTF8.self)

↓String.init(decoding: data, as: UTF8.self)

let text: String = ↓.init(decoding: data, as: UTF8.self)

//
// allow_implicit_init: true
//

let text = ↓.init(decoding: data, as: UTF8.self)

//
// allow_implicit_init: true
//

f(↓.init(decoding: data, as: UTF8.self))