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31c01eab73
includes a number of QoI things to help people write the correct code. I will commit the testcase for it as the next patch. The bulk of this patch is moving the stdlib, testsuite and validation testsuite to the new syntax. I moved a few uses of "as" patterns back to as? expressions in the stdlib as well. Swift SVN r27959
39 lines
728 B
Swift
39 lines
728 B
Swift
// RUN: %target-parse-verify-swift
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class C : Hashable {
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var x = 0
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var hashValue: Int {
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return x
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}
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}
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func == (x: C, y: C) -> Bool { return true }
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class D : C {}
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// Unrelated to the classes above.
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class U : Hashable {
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var hashValue: Int {
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return 0
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}
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}
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func == (x: U, y: U) -> Bool { return true }
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var setC = Set<C>()
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var setD = Set<D>()
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// Test set forced downcasts
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setD = setC as! Set<D>
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// Test set conditional downcasts
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if let setD = setC as? Set<D> { }
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// Test set downcasts to unrelated types.
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setC as! Set<U> // expected-error{{'U' is not a subtype of 'C'}}
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// Test set conditional downcasts to unrelated types
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if let setU = setC as? Set<U> { } // expected-error{{'U' is not a subtype of 'C'}}
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