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// RUN: %target-typecheck-verify-swift
// Has a lot of invalid 'appendInterpolation' methods
public struct BadStringInterpolation: StringInterpolationProtocol {
// expected-error@-1{{type conforming to 'StringInterpolationProtocol' does not implement a valid 'appendInterpolation' method}} {{educational-notes=string-interpolation-conformance}}
public init(literalCapacity: Int, interpolationCount: Int) {}
public mutating func appendLiteral(_: String) {}
public static func appendInterpolation(static: ()) {
// expected-warning@-1{{'appendInterpolation' method will never be used because it is static}} {{10-17=}} {{educational-notes=string-interpolation-conformance}}
}
private func appendInterpolation(private: ()) {
// expected-warning@-1{{'appendInterpolation' method is private, but 'BadStringInterpolation' is public}}
}
func appendInterpolation(default: ()) {
// expected-warning@-1{{'appendInterpolation' method is internal, but 'BadStringInterpolation' is public}}
}
public func appendInterpolation(intResult: ()) -> Int {
// expected-warning@-1{{'appendInterpolation' method does not return 'Void' or have a discardable result}} {{10-10=@discardableResult }} {{educational-notes=string-interpolation-conformance}}
}
}
// Has no 'appendInterpolation' methods at all
public struct IncompleteStringInterpolation: StringInterpolationProtocol {
// expected-error@-1{{type conforming to 'StringInterpolationProtocol' does not implement a valid 'appendInterpolation' method}}
public init(literalCapacity: Int, interpolationCount: Int) {}
public mutating func appendLiteral(_: String) {}
}
// Has only good 'appendInterpolation' methods.
public struct GoodStringInterpolation: StringInterpolationProtocol {
public init(literalCapacity: Int, interpolationCount: Int) {}
public mutating func appendLiteral(_: String) {}
public func appendInterpolation(noResult: ()) {}
public func appendInterpolation(voidResult: ()) -> Void {}
@discardableResult
public func appendInterpolation(discardableResult: ()) -> Int {}
}
// Has only good 'appendInterpolation' methods, but they're in an extension.
public struct GoodSplitStringInterpolation: StringInterpolationProtocol {
public init(literalCapacity: Int, interpolationCount: Int) {}
public mutating func appendLiteral(_: String) {}
}
extension GoodSplitStringInterpolation {
public func appendInterpolation(noResult: ()) {}
public func appendInterpolation(voidResult: ()) -> Void {}
@discardableResult
public func appendInterpolation(discardableResult: ()) -> Int {}
}
// Has only good 'appendInterpolation' methods, and is not public.
struct GoodNonPublicStringInterpolation: StringInterpolationProtocol {
init(literalCapacity: Int, interpolationCount: Int) {}
mutating func appendLiteral(_: String) {}
func appendInterpolation(noResult: ()) {}
public func appendInterpolation(voidResult: ()) -> Void {}
@discardableResult
func appendInterpolation(discardableResult: ()) -> Int {}
}
// Has a mixture of good and bad 'appendInterpolation' methods.
// We don't emit any errors in this case--we assume the others
// are implementation details or something.
public struct GoodStringInterpolationWithBadOnesToo: StringInterpolationProtocol {
public init(literalCapacity: Int, interpolationCount: Int) {}
public mutating func appendLiteral(_: String) {}
public func appendInterpolation(noResult: ()) {}
public static func appendInterpolation(static: ()) {}
private func appendInterpolation(private: ()) {}
func appendInterpolation(default: ()) {}
public func appendInterpolation(intResult: ()) -> Int {}
}
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