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0d92918f5b
We weren't checking this before, which would let you define a public protocol that no public type could conform to. This is a source-breaking change, so stage it in with a warning. It becomes an error in -swift-version 5 mode.
58 lines
2.3 KiB
Swift
58 lines
2.3 KiB
Swift
// RUN: %target-typecheck-verify-swift -swift-version 4
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private struct PrivateStruct {} // expected-note 6{{type declared here}}
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internal struct InternalStruct {} // expected-note 2{{type declared here}}
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public struct PublicStruct {}
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public protocol BaseProtocol {
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associatedtype T
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}
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public protocol PublicProtocol1 : BaseProtocol where T == PrivateStruct {
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// expected-warning@-1 {{public protocol's 'where' clause should not use a private protocol}}
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associatedtype X : BaseProtocol where X.T == PrivateStruct
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// expected-warning@-1 {{associated type in a public protocol uses a private type in its requirement}}
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}
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public protocol PublicProtocol2 : BaseProtocol where T == InternalStruct {
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// expected-warning@-1 {{public protocol's 'where' clause should not use an internal protocol}}
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associatedtype X : BaseProtocol where X.T == InternalStruct
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// expected-warning@-1 {{associated type in a public protocol uses an internal type in its requirement}}
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}
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public protocol PublicProtocol3 : BaseProtocol where T == PublicStruct {
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associatedtype X : BaseProtocol where X.T == PublicStruct
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}
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internal protocol InternalProtocol1 : BaseProtocol where T == PrivateStruct {
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// expected-warning@-1 {{internal protocol's 'where' clause should not use a private protocol}}
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associatedtype X : BaseProtocol where X.T == PrivateStruct
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// expected-warning@-1 {{associated type in an internal protocol uses a private type in its requirement}}
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}
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internal protocol InternalProtocol2 : BaseProtocol where T == InternalStruct {
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associatedtype X : BaseProtocol where X.T == InternalStruct
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}
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internal protocol InternalProtocol3 : BaseProtocol where T == PublicStruct {
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associatedtype X : BaseProtocol where X.T == PublicStruct
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}
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protocol Protocol1 : BaseProtocol where T == PrivateStruct {
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// expected-warning@-1 {{protocol should be declared fileprivate because its 'where' clause uses a private protocol}}
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associatedtype X : BaseProtocol where X.T == PrivateStruct
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// expected-warning@-1 {{associated type in an internal protocol uses a private type in its requirement}}
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}
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protocol Protocol2 : BaseProtocol where T == InternalStruct {
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associatedtype X : BaseProtocol where X.T == InternalStruct
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}
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protocol Protocol3 : BaseProtocol where T == PublicStruct {
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associatedtype X : BaseProtocol where X.T == PublicStruct
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}
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