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da07ff577c
PrintAsClang is supposed to emit declarations in the same order regardless of the compiler’s internal state, but we have repeatedly found that our current criteria are inadequate, resulting in non-functionality-affecting changes to generated header content. Add a diagnostic that’s emitted when this happens soliciting a bug report. Since there *should* be no cases where the compiler fails to order declarations, this diagnostic is never actually emitted. Instead, we test this change by enabling `-verify` on nearly all PrintAsClang tests to make sure they are unaffected. This did demonstrate a missing criterion that only mattered in C++ mode: extensions that varied only in their generic signature were not sorted stably. Add a sort criterion for this.
43 lines
2.4 KiB
Swift
43 lines
2.4 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend %s -module-name Functions -verify -clang-header-expose-decls=has-expose-attr -disable-availability-checking -typecheck -verify -emit-clang-header-path %t/functions.h
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// RUN: cat %s | grep -v _expose > %t/clean.swift
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// RUN: %target-swift-frontend %t/clean.swift -module-name Functions -clang-header-expose-decls=all-public -disable-availability-checking -typecheck -verify -emit-clang-header-path %t/header.h
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// RUN: %FileCheck %s < %t/header.h
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// RUN: %check-interop-cxx-header-in-clang(%t/header.h)
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public typealias FnType = () -> ()
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@_expose(Cxx) // expected-error {{enum 'unsupportedEnumAssociatedValueType' can not be represented in C++ as one of its cases has an associated value with type that can't be represented in C++}}
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public enum unsupportedEnumAssociatedValueType {
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case A
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case B(FnType)
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}
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@_expose(Cxx) // expected-error {{enum 'unsupportedEnumMultipleAssociatedValues' can not yet be represented in C++ as one of its cases has multiple associated values}}
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public enum unsupportedEnumMultipleAssociatedValues {
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case A
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case B(Int, Int)
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}
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@_expose(Cxx) // expected-error {{indirect enum 'unsupportedEnumIndirect' can not yet be represented in C++}}
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public indirect enum unsupportedEnumIndirect {
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case A
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case B
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}
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@_expose(Cxx) // expected-error {{enum 'unsupportedEnumProtocolType' can not be represented in C++ as one of its cases has an associated value with type that can't be represented in C++}}
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public enum unsupportedEnumProtocolType {
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case A
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case B(Error)
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}
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// CHECK: class unsupportedEnumAssociatedValueType { } SWIFT_UNAVAILABLE_MSG("enum 'unsupportedEnumAssociatedValueType' can not be represented in C++ as one of its cases has an associated value with type that can't be represented in C++");
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// CHECK-EMPTY:
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// CHECK-NEXT: class unsupportedEnumIndirect { } SWIFT_UNAVAILABLE_MSG("indirect enum 'unsupportedEnumIndirect' can not yet be represented in C++");
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// CHECK-EMPTY:
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// CHECK-NEXT: class unsupportedEnumMultipleAssociatedValues { } SWIFT_UNAVAILABLE_MSG("enum 'unsupportedEnumMultipleAssociatedValues' can not yet be represented in C++ as one of its cases has multiple associated values");
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// CHECK-EMPTY:
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// CHECK-NEXT: class unsupportedEnumProtocolType { } SWIFT_UNAVAILABLE_MSG("enum 'unsupportedEnumProtocolType' can not be represented in C++ as one of its cases has an associated value with type that can't be represented in C++");
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