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If we have an identifier followed by either `[` or a generic argument list, avoid turning it into a binding pattern, as that would be invalid. This is similar to the existing rule we have where a following `(` prevents a binding pattern from being formed. This allows patterns such as `let E<Int>.foo(x)` and `let (y[0], x)` to compile, where `x` is treated as a binding, but no other identifier is. rdar://108738034
22 lines
349 B
Swift
22 lines
349 B
Swift
// RUN: %target-typecheck-verify-swift
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// rdar://108738034: Make sure we can type-check this.
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enum E<T>: Error {
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case e(T)
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}
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struct S {
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func bar(_: (Error?) -> Void) {}
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}
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func foo(_ s: S) {
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s.bar { error in
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guard let error = error else {
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return
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}
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if case let E<Int>.e(y) = error {
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print(y)
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}
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}
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}
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