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6f42f69876
Take DynamicSelf as a keyword, but parse it as a type-identifier. Teach function declaration checking to sniff out and validate DynamicSelf early, with appropriate QoI for references to DynamicSelf that appear in other places. As a temporary hack, DynamicSelf resolves to an alias for 'Self' in a protocol or the enclosing nominal type. Swift SVN r12708
34 lines
1.3 KiB
Swift
34 lines
1.3 KiB
Swift
// RUN: %swift -parse %s -verify
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// DynamicSelf is only allowed on the return type of class and
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// protocol methods.
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func global() -> DynamicSelf { } // expected-error{{global function cannot return 'DynamicSelf'}}
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func inFunction() {
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func local() -> DynamicSelf { } // expected-error{{local function cannot return 'DynamicSelf'}}
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}
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struct S0 {
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func f() -> DynamicSelf { } // expected-error{{struct method cannot return 'DynamicSelf'; did you mean to use the struct type 'S0'?}}{{15-26=S0}}
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func g(ds: DynamicSelf) { } // expected-error{{'DynamicSelf' can only be introduced in the return type of a method; did you mean 'S0'?}}{{14-25=S0}}
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}
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enum E0 {
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func f() -> DynamicSelf { } // expected-error{{enum method cannot return 'DynamicSelf'; did you mean to use the enum type 'E0'?}}{{15-26=E0}}
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func g(ds: DynamicSelf) { } // expected-error{{'DynamicSelf' can only be introduced in the return type of a method; did you mean 'E0'?}}{{14-25=E0}}
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}
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class C0 {
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func f() -> DynamicSelf { } // okay
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func g(ds: DynamicSelf) { } // expected-error{{'DynamicSelf' can only be introduced in the return type of a method; did you mean 'C0'?}}{{14-25=C0}}
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}
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protocol P0 {
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func f() -> DynamicSelf { } // okay
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func g(ds: DynamicSelf) { } // expected-error{{'DynamicSelf' can only be introduced in the return type of a method; did you mean 'Self'?}}{{14-25=Self}}
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}
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