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de66b0c25c
Introduce a warning about redeclaring the associated types from an inherited protocol in the protocol being checked: * If the new declaration is an associated type, note that the declaration could be replaced by requirements in the protocol's where clause. * If the new declaration is a typealias, note that it could be replaced by a same-type constraint in the protocol's where clause.
36 lines
725 B
Swift
36 lines
725 B
Swift
// RUN: %target-typecheck-verify-swift
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protocol Incrementable {
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func successor() -> Self
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}
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protocol _ForwardIndex {
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associatedtype Distance = MyInt // expected-note{{declared here}}
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}
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protocol ForwardIndex : _ForwardIndex {
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}
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protocol _BidirectionalIndex : _ForwardIndex {
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func predecessor() -> Self
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}
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protocol BidirectionalIndex : ForwardIndex, _BidirectionalIndex {
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}
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protocol _RandomAccessIndex : _BidirectionalIndex {
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associatedtype Distance // expected-warning{{redeclaration of associated type 'Distance}}
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}
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protocol RandomAccessIndex
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: BidirectionalIndex, _RandomAccessIndex {}
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struct MyInt : RandomAccessIndex
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{
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typealias Distance = MyInt
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func predecessor() -> MyInt {
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return self
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}
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}
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