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In @frozen structs, stored properties and property wrappers must have inlinable initial value expressions, since they are re-emitted into designated initializer bodies, which themselves might be @inlinable. However, 'lazy' properties don't follow this pattern; the initial value expression is emitted inside the getter, which is never @inlinable.
113 lines
4.5 KiB
Swift
113 lines
4.5 KiB
Swift
// RUN: %target-typecheck-verify-swift
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@propertyWrapper
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public struct Wrapper<T> {
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public init(wrappedValue: T) {}
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public var wrappedValue: T { fatalError() }
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}
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@_spi(Foo)
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public class Bar {
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// expected-note@-1 16{{type declared here}}
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public init() {}
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}
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public struct Resilient {
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public init() {}
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@_spi(Foo) public func method(_: Bar) {}
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@_spi(Foo) public var computedProperty: Bar { Bar() }
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@_spi(Foo) public var storedProperty1: Bar
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@_spi(Foo) public var storedProperty2 = Bar()
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@_spi(Foo) public lazy var lazyProperty1 = Bar()
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@_spi(Foo) public lazy var lazyProperty2: Bar = Bar()
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@_spi(Foo) @Wrapper public var wrappedProperty1: Bar
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@_spi(Foo) @Wrapper public var wrappedProperty2 = Bar()
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}
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@frozen public struct Good {
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public init() {}
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@_spi(Foo) public func method(_: Bar) {}
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@_spi(Foo) public var computedProperty: Bar { Bar() }
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@_spi(Foo) public var storedProperty1: Bar
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// expected-error@-1 {{cannot use class 'Bar' here; it is SPI}}
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// expected-error@-2 {{stored property 'storedProperty1' cannot be declared '@_spi' in a '@frozen' struct}}
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@_spi(Foo) public var storedProperty2 = Bar()
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// expected-error@-1 {{stored property 'storedProperty2' cannot be declared '@_spi' in a '@frozen' struct}}
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@_spi(Foo) public lazy var lazyProperty1 = Bar()
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// expected-error@-1 {{stored property 'lazyProperty1' cannot be declared '@_spi' in a '@frozen' struct}}
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@_spi(Foo) public lazy var lazyProperty2: Bar = Bar()
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// expected-error@-1 {{cannot use class 'Bar' here; it is SPI}}
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// expected-error@-2 {{stored property 'lazyProperty2' cannot be declared '@_spi' in a '@frozen' struct}}
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@_spi(Foo) @Wrapper public var wrappedProperty1: Bar
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// expected-error@-1 {{stored property 'wrappedProperty1' cannot be declared '@_spi' in a '@frozen' struct}}
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@_spi(Foo) @Wrapper public var wrappedProperty2 = Bar()
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// expected-error@-1 {{stored property 'wrappedProperty2' cannot be declared '@_spi' in a '@frozen' struct}}
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}
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@frozen public struct Bad {
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public init() {}
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public func method(_: Bar) {} // expected-error {{cannot use class 'Bar' here; it is SPI}}
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public var storedProperty1: Bar
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// expected-error@-1 {{cannot use class 'Bar' here; it is SPI}}
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public var storedProperty2 = Bar()
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// expected-error@-1 {{cannot use class 'Bar' here; it is SPI}}
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// expected-error@-2 {{class 'Bar' cannot be used in a property initializer in a '@frozen' type because it is SPI}}
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// expected-error@-3 {{initializer 'init()' cannot be used in a property initializer in a '@frozen' type because it is SPI}}
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public var computedProperty: Bar { Bar() } // expected-error {{cannot use class 'Bar' here; it is SPI}}
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public lazy var lazyProperty1 = Bar() // expected-error {{cannot use class 'Bar' here; it is SPI}}
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public lazy var lazyProperty2: Bar = Bar() // expected-error {{cannot use class 'Bar' here; it is SPI}}
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@Wrapper public var wrappedProperty1: Bar
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// expected-error@-1 {{cannot use class 'Bar' here; it is SPI}}
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@Wrapper public var wrappedProperty2 = Bar()
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// expected-error@-1 {{cannot use class 'Bar' here; it is SPI}}
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// expected-error@-2 {{class 'Bar' cannot be used in a property initializer in a '@frozen' type because it is SPI}}
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// expected-error@-3 {{initializer 'init()' cannot be used in a property initializer in a '@frozen' type because it is SPI}}
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}
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@frozen public struct BadPrivate {
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private init() {}
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private func method(_: Bar) {}
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private var storedProperty1: Bar
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// expected-error@-1 {{cannot use class 'Bar' here; it is SPI}}
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private var storedProperty2 = Bar()
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// expected-error@-1 {{cannot use class 'Bar' here; it is SPI}}
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// expected-error@-2 {{class 'Bar' cannot be used in a property initializer in a '@frozen' type because it is SPI}}
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// expected-error@-3 {{initializer 'init()' cannot be used in a property initializer in a '@frozen' type because it is SPI}}
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private var computedProperty: Bar { Bar() }
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private lazy var lazyProperty1 = Bar() // expected-error {{cannot use class 'Bar' here; it is SPI}}
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private lazy var lazyProperty2: Bar = Bar() // expected-error {{cannot use class 'Bar' here; it is SPI}}
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@Wrapper private var wrappedProperty1: Bar
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// expected-error@-1 {{cannot use class 'Bar' here; it is SPI}}
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@Wrapper private var wrappedProperty2 = Bar()
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// expected-error@-1 {{cannot use class 'Bar' here; it is SPI}}
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// expected-error@-2 {{class 'Bar' cannot be used in a property initializer in a '@frozen' type because it is SPI}}
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// expected-error@-3 {{initializer 'init()' cannot be used in a property initializer in a '@frozen' type because it is SPI}}
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}
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