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cef43e8e31
Diagnose `@derivative` and `@transpose` attributes that are missing the required comma before the `wrt:` clause: ``` @derivative(of: foo wrt: x) @transpose(of: bar wrt: (x, y)) ``` Previously, this was undiagnosed. Resolves TF-1168.
109 lines
3.4 KiB
Swift
109 lines
3.4 KiB
Swift
// RUN: %target-swift-frontend -parse -verify %s
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/// Good
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@transpose(of: foo)
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func transpose(v: Float) -> Float
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@transpose(of: foo(_:_:))
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func transpose(v: Float) -> Float
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@transpose(of: wrt, wrt: 0)
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func transpose(v: Float) -> Float
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@transpose(of: foo, wrt: 0)
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func transpose(v: Float) -> Float
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@transpose(of: foo, wrt: (0, 1))
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func transpose(v: Float) -> (Float, Float)
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@transpose(of: foo, wrt: (self, 0, 1, 2))
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func transpose(v: Float) -> (Float, Float, Float, Float)
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// Qualified declaration.
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@transpose(of: A.B.C.foo(x:y:_:z:))
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func transpose(v: Float) -> Float
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// Qualified declaration with specialized generic type.
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@transpose(of: A<T>.B<U, V>.C.foo(x:y:_:z:))
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func transpose(v: Float) -> Float
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// Qualified operator.
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// TODO(TF-1065): Consider disallowing qualified operators.
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@transpose(of: Swift.Float.+)
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func transpose(v: Float) -> Float
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// Qualified leading-period operator (confusing).
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// TODO(TF-1065): Consider disallowing qualified operators.
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@transpose(of: Swift.Float..<)
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func transpose(v: Float) -> Float
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// `init` keyword edge case.
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@transpose(of: Swift.Float.init(_:))
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func transpose(v: Float) -> Float
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// `subscript` keyword edge case.
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@transpose(of: Swift.Array.subscript(_:))
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func transpose(v: Float) -> Float
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/// Bad
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// expected-error @+2 {{expected an original function name}}
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// expected-error @+1 {{expected declaration}}
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@transpose(of: 3)
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func transpose(v: Float) -> Float
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// expected-error @+1 {{expected label 'wrt:' in '@transpose' attribute}}
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@transpose(of: foo, blah)
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func transpose(v: Float) -> Float
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// expected-error @+1 {{expected a colon ':' after 'wrt'}}
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@transpose(of: foo, wrt)
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func transpose(v: Float) -> Float
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// expected-error @+1 {{unexpected ',' separator}}
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@transpose(of: foo,)
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func transpose(v: Float) -> Float
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// expected-error @+2 {{expected ')' in 'transpose' attribute}}
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// expected-error @+1 {{expected declaration}}
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@transpose(of: foo, wrt: 0,)
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func transpose(v: Float) -> Float
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// expected-error @+1 {{expected a parameter, which can be a function parameter index or 'self'}}
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@transpose(of: foo, wrt: v)
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func transpose(v: Float) -> Float
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// expected-error @+1 {{expected a parameter, which can be a function parameter index or 'self'}}
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@transpose(of: foo, wrt: (0, v))
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func transpose(v: Float) -> Float
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// NOTE: The "expected ',' separator" diagnostic is not ideal.
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// Ideally, the diagnostic should point out that that `Swift.Float.+(_:_)` is
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// not a valid declaration name (missing colon after second argument label).
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// expected-error @+2 {{expected ',' separator}}
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// expected-error @+1 {{expected declaration}}
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@transpose(of: Swift.Float.+(_:_))
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func transpose(v: Float) -> Float
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// NOTE: The "expected ',' separator" diagnostic is not ideal.
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// Ideally, the diagnostic should point out that that `Swift.Float.+.a` is
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// not a valid declaration name.
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// expected-error @+2 {{expected ',' separator}}
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// expected-error @+1 {{expected declaration}}
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@transpose(of: Swift.Float.+.a)
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func transpose(v: Float) -> Float
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// TF-1168: missing comma before `wrt:`.
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// expected-error @+2 {{expected ',' separator}}
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// expected-error @+1 {{expected declaration}}
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@transpose(of: foo wrt: x)
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func transpose(v: Float) -> Float
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func testLocalTransposeRegistration() {
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// Transpose registration can only be non-local.
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// expected-error @+1 {{attribute '@transpose' can only be used in a non-local scope}}
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@transpose(of: +)
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func transpose(_ x: Float) -> (Float, Float)
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}
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