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63b802ca88
This makes diagnostics more verbose and accurate, because it's possible to distinguish how many parameters there are based on the message itself. Also there are multiple diagnostic messages in a format of `<descriptive-kind> <decl-name> ...` that get printed as e.g. `subscript 'subscript'` if empty labels are omitted.
61 lines
2.0 KiB
Swift
61 lines
2.0 KiB
Swift
// RUN: %target-typecheck-verify-swift
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protocol P {
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func foo(_ i: Int, x: Float) // expected-note 5 {{requirement 'foo(_:x:)' declared here}}
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}
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struct S1 : P {
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func foo(_ i: Int, x: Float) { }
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}
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struct S2 : P {
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func foo(_ i: Int, _ x: Float) { } // expected-error{{method 'foo' has different argument labels from those required by protocol 'P' ('foo(_:x:)')}}{{22-24=}}
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}
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struct S3 : P {
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func foo(_ i: Int, y: Float) { } // expected-error{{method 'foo(_:y:)' has different argument labels from those required by protocol 'P' ('foo(_:x:)')}}{{22-22=x }}
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}
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struct S4 : P {
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func foo(_ i: Int, _: Float) { } // expected-error{{method 'foo' has different argument labels from those required by protocol 'P' ('foo(_:x:)')}}{{22-22=x }}
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}
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struct S5 : P {
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func foo(_ i: Int, z x: Float) { } // expected-error{{method 'foo(_:z:)' has different argument labels from those required by protocol 'P' ('foo(_:x:)')}}{{22-24=}}
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}
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struct S5a {
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func foo(_ i: Int, z x: Float) { } // expected-note {{'foo(_:z:)' declared here}} {{none}}
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}
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extension S5a: P {} // expected-error{{method 'foo(_:z:)' has different argument labels from those required by protocol 'P' ('foo(_:x:)')}} {{none}}
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struct Loadable { }
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protocol LabeledRequirement {
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func method(x: Loadable)
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}
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struct UnlabeledWitness : LabeledRequirement {
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func method(x _: Loadable) {}
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}
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// rdar://problem/21333445
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protocol P2 {
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init(_ : Int) // expected-note{{requirement 'init(_:)' declared here}}
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}
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struct XP2 : P2 { // expected-error{{initializer 'init(foo:)' has different argument labels from those required by protocol 'P2' ('init(_:)')}}
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let foo: Int
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}
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// rdar://problem/22981205
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protocol P3 {
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subscript(val: String, label arg: String) -> Int { get } // expected-note{{requirement 'subscript(_:label:)' declared here}}
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}
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class MislabeledSubscript : P3 {
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subscript(val: String, label: String) -> Int { // expected-error{{method 'subscript(_:_:)' has different argument labels from those required by protocol 'P3' ('subscript(_:label:)')}}
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return 1
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}
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}
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