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94e999a1b5
We used to diagnose references to unavailable declarations in two places: - inside Exprs, right after type checking the expression - inside TypeReprs, from resolveType() In broad terms, resolveType() is called with TypeReprs stored inside both Stmts and Decls. To handle the first case, I added a new overload of diagAvailability() that takes a Stmt, to be called from typeCheckStmt(). This doesn't actually walk into any Exprs stored inside the statement; this means it only walks Patterns and such. For the second case, a new DeclAvailabilityChecker is now defined in TypeCheckAccess.cpp. It's structure is analogous to the other three walkers there: - AccessControlChecker - UsableFromInlineChecker - ExportabilityChecker The new implementation of availability checking for types introduces a lot more code than the old online logic it replaces. However, I hope to consolidate some of the code duplication among the four checkers that are defined in TypeCheckAccess.cpp, and do some other cleanups that will make the benefit of the new approach apparent.
28 lines
1.4 KiB
Swift
28 lines
1.4 KiB
Swift
// RUN: %target-typecheck-verify-swift -swift-version 4
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public struct Pair<A, B> {}
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public struct PublicStruct {
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public struct Inner {}
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@available(*, unavailable)
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internal struct Obsolete {} // expected-note * {{marked unavailable here}}
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}
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@available(*, unavailable, renamed: "PublicStruct")
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public typealias ObsoleteAlias = PublicStruct // expected-note * {{marked unavailable here}}
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public let a: ObsoleteAlias.Inner? // expected-error {{'ObsoleteAlias' has been renamed to 'PublicStruct'}}
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public let b: ObsoleteAlias.Obsolete? // expected-error {{'ObsoleteAlias' has been renamed to 'PublicStruct'}}
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// expected-error@-1 {{constant cannot be declared public because its type uses an internal type}}
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public let c: Pair<ObsoleteAlias.Inner, PublicStruct.Obsolete>? // expected-error {{'ObsoleteAlias' has been renamed to 'PublicStruct'}}
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// expected-error@-1 {{'Obsolete' is unavailable}}
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// expected-error@-2 {{constant cannot be declared public because its type uses an internal type}}
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public let c2: Pair<PublicStruct.Obsolete, ObsoleteAlias.Inner>? // expected-error {{'Obsolete' is unavailable}}
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// expected-error@-1 {{'ObsoleteAlias' has been renamed to 'PublicStruct'}}
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// expected-error@-2 {{constant cannot be declared public because its type uses an internal type}}
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public let d: ObsoleteAlias? // expected-error {{'ObsoleteAlias' has been renamed to 'PublicStruct'}}
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