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8b55a0f61b
For Swift 3 / 4: Deprecate the spelling "ImplicitlyUnwrappedOptional", emitting a warning and suggesting "!" in places where they are allowed according to SE-0054. In places where SE-0054 disallowed IUOs but we continued to accept them in previous compilers, emit a warning suggesting "Optional" or "?" as an alternative depending on context and treat the IUO as an Optional, noting this in the diagnostic. For Swift 5: Treat "ImplicitlyUnwrappedOptional" as an error, suggesting "!" in places where they are allowed by SE-0054. In places where SE-0054 disallowed IUOs, emit an error suggestion "Optional" or "?" as an alternative depending on context.
18 lines
382 B
Swift
18 lines
382 B
Swift
// RUN: %target-typecheck-verify-swift
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struct A {
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func foo() {}
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}
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var a : A?
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var b : A ? // expected-error {{consecutive statements on a line}} {{10-10=;}} expected-error {{expected expression}}
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var c = a? // expected-error {{'?' must be followed by a call, member lookup, or subscript}}
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var d : ()? = a?.foo()
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var e : (() -> A)?
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var f = e?()
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struct B<T> {}
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var g = B<A?>()
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