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With this, we're correctly lowering the dynamic_method_br instruction to IR, which allows us to query the existence of an instance method on a value of type DynamicLookup and, if it's there, call it via the closure stored in the optional. Part of <rdar://problem/14397505>. Swift SVN r8205
22 lines
398 B
Swift
22 lines
398 B
Swift
// RUN: %swift -i %s | FileCheck %s
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class X {
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func [objc] f() { println("X.f()") }
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}
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class Y { }
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func test_dynamic_lookup_f(obj : DynamicLookup) {
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var of = obj.f
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if of {
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of.get()()
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} else {
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print("Object does not respond to the selector \"f\".\n")
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}
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}
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// CHECK: X.f()
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test_dynamic_lookup_f(X())
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// CHECK: Object does not respond to the selector "f"
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test_dynamic_lookup_f(Y())
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