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39 lines
2.3 KiB
Swift
39 lines
2.3 KiB
Swift
// RUN: %target-typecheck-verify-swift -enable-experimental-feature VariadicGenerics
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// REQUIRES: asserts
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struct Conformance<each T: Equatable> {}
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_ = Conformance<Int, String>.self // ok
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_ = Conformance<AnyObject, Character>.self // expected-error {{type 'AnyObject' does not conform to protocol 'Equatable'}}
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class Class {}
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class OtherClass {}
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class Subclass: Class {}
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struct Superclass<each T: Class> {} // expected-note {{requirement specified as 'T' : 'Class' [with each T = OtherClass]}}
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_ = Superclass<Class, Subclass>.self // ok
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_ = Superclass<OtherClass>.self // expected-error {{'Superclass' requires that 'OtherClass' inherit from 'Class'}}
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struct Layout<each T: AnyObject> {} // expected-note {{requirement specified as 'T' : 'AnyObject' [with each T = Int, String]}}
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_ = Layout<Class, Subclass>.self // ok
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_ = Layout<Int, String>.self // expected-error {{'Layout' requires that 'Int' be a class type}}
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struct Outer<each T: Sequence> {
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struct Inner<each U: Sequence> where each T.Element == each U.Element {}
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// expected-note@-1 {{requirement specified as 'T.Element' == 'U.Element' [with each T = Array<Int>, Array<String>; each U = Set<String>, Set<Int>]}}
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// expected-note@-2 {{requirement specified as 'T.Element' == 'U.Element' [with each T = Array<Int>; each U = Set<Int>, Set<String>]}}
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struct InnerShape<each U: Sequence> where (repeat (each T, each U)): Any {}
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// expected-note@-1 {{same-shape requirement inferred between 'T' and 'U' [with each T = Array<Int>; each U = Set<Int>, Set<String>]}}
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}
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_ = Outer<Array<Int>, Array<String>>.Inner<Set<Int>, Set<String>>.self // ok
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_ = Outer<Array<Int>, Array<String>>.Inner<Set<String>, Set<Int>>.self // expected-error {{'Outer<Array<Int>, Array<String>>.Inner' requires the types 'Pack{Int, String}' and 'Pack{String, Int}' be equivalent}}
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_ = Outer<Array<Int>>.Inner<Set<Int>, Set<String>>.self // expected-error {{'Outer<Array<Int>>.Inner' requires the types 'Pack{Int}' and 'Pack{Int, String}' be equivalent}}
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_ = Outer<Array<Int>, Array<String>>.InnerShape<Set<String>, Set<Int>>.self // ok
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_ = Outer<Array<Int>>.InnerShape<Set<Int>, Set<String>>.self // expected-error {{'Outer<Array<Int>>.InnerShape' requires the type packs 'Pack{Array<Int>}' and 'Pack{Set<Int>, Set<String>}' have the same shape}} |