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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.
151 lines
6.4 KiB
Swift
151 lines
6.4 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend %s -module-name Functions -enable-experimental-cxx-interop -clang-header-expose-decls=has-expose-attr-or-stdlib -enable-experimental-feature GenerateBindingsForThrowingFunctionsInCXX -typecheck -verify -emit-clang-header-path %t/functions.h
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// RUN: %FileCheck %s < %t/functions.h
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// RUN: %check-interop-cxx-header-in-clang(%t/functions.h -DSWIFT_CXX_INTEROP_HIDE_STL_OVERLAY -DSWIFT_CXX_INTEROP_EXPERIMENTAL_SWIFT_ERROR -Wno-unused-function)
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// REQUIRES: swift_feature_GenerateBindingsForThrowingFunctionsInCXX
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// CHECK-LABEL: namespace Functions SWIFT_PRIVATE_ATTR SWIFT_SYMBOL_MODULE("Functions") {
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// CHECK-LABEL: namespace _impl {
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// CHECK: SWIFT_EXTERN void $s9Functions18emptyThrowFunctionyyKF(SWIFT_CONTEXT void * _Nonnull _ctx, SWIFT_ERROR_RESULT void * _Nullable * _Nullable _error) SWIFT_CALL; // emptyThrowFunction()
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// CHECK: SWIFT_EXTERN void $s9Functions18testDestroyedErroryyKF(SWIFT_CONTEXT void * _Nonnull _ctx, SWIFT_ERROR_RESULT void * _Nullable * _Nullable _error) SWIFT_CALL; // testDestroyedError()
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// CHECK: SWIFT_EXTERN void $s9Functions13throwFunctionyyKF(SWIFT_CONTEXT void * _Nonnull _ctx, SWIFT_ERROR_RESULT void * _Nullable * _Nullable _error) SWIFT_CALL; // throwFunction()
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// CHECK: SWIFT_EXTERN void $s9Functions28throwFunctionWithNeverReturns0E0OyKF(SWIFT_CONTEXT void * _Nonnull _ctx, SWIFT_ERROR_RESULT void * _Nullable * _Nullable _error) SWIFT_CALL; // throwFunctionWithNeverReturn()
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// CHECK: SWIFT_EXTERN ptrdiff_t $s9Functions31throwFunctionWithPossibleReturnyS2iKF(ptrdiff_t a, SWIFT_CONTEXT void * _Nonnull _ctx, SWIFT_ERROR_RESULT void * _Nullable * _Nullable _error) SWIFT_CALL; // throwFunctionWithPossibleReturn(_:)
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// CHECK: SWIFT_EXTERN ptrdiff_t $s9Functions23throwFunctionWithReturnSiyKF(SWIFT_CONTEXT void * _Nonnull _ctx, SWIFT_ERROR_RESULT void * _Nullable * _Nullable _error) SWIFT_CALL; // throwFunctionWithReturn()
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// CHECK: }
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@_expose(Cxx)
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public enum NaiveErrors : Error {
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case returnError
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case throwError
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public func getMessage() {
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print(self)
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}
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}
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@_expose(Cxx)
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public func emptyThrowFunction() throws { print("passEmptyThrowFunction") }
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// CHECK: SWIFT_INLINE_THUNK swift::ThrowingResult<void> emptyThrowFunction() SWIFT_SYMBOL("s:9Functions18emptyThrowFunctionyyKF") {
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// CHECK: void* opaqueError = nullptr;
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// CHECK: void* _ctx = nullptr;
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// CHECK: _impl::$s9Functions18emptyThrowFunctionyyKF(_ctx, &opaqueError);
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// CHECK: if (opaqueError != nullptr)
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// CHECK: #ifdef __cpp_exceptions
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// CHECK: throw (swift::Error(opaqueError));
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// CHECK: #else
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// CHECK: return swift::Expected<void>(swift::Error(opaqueError));
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// CHECK: #endif
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// CHECK: }
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class TestDestroyed {
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deinit {
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print("Test destroyed")
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}
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}
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@_expose(Cxx)
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public struct DestroyedError : Error {
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let t = TestDestroyed()
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}
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@_expose(Cxx)
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public func testDestroyedError() throws { throw DestroyedError() }
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// CHECK: SWIFT_INLINE_THUNK swift::ThrowingResult<void> testDestroyedError() SWIFT_SYMBOL("s:9Functions18testDestroyedErroryyKF") {
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// CHECK: void* opaqueError = nullptr;
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// CHECK: void* _ctx = nullptr;
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// CHECK: _impl::$s9Functions18testDestroyedErroryyKF(_ctx, &opaqueError);
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// CHECK: if (opaqueError != nullptr)
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// CHECK: #ifdef __cpp_exceptions
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// CHECK: throw (swift::Error(opaqueError));
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// CHECK: #else
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// CHECK: return swift::Expected<void>(swift::Error(opaqueError));
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// CHECK: #endif
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// CHECK: }
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@_expose(Cxx)
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public func throwFunction() throws {
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print("passThrowFunction")
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throw NaiveErrors.throwError
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}
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// CHECK: SWIFT_INLINE_THUNK swift::ThrowingResult<void> throwFunction() SWIFT_SYMBOL("s:9Functions13throwFunctionyyKF") {
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// CHECK: void* opaqueError = nullptr;
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// CHECK: void* _ctx = nullptr;
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// CHECK: _impl::$s9Functions13throwFunctionyyKF(_ctx, &opaqueError);
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// CHECK: if (opaqueError != nullptr)
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// CHECK: #ifdef __cpp_exceptions
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// CHECK: throw (swift::Error(opaqueError));
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// CHECK: #else
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// CHECK: return swift::Expected<void>(swift::Error(opaqueError));
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// CHECK: #endif
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// CHECK: }
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@_expose(Cxx)
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public func throwFunctionWithNeverReturn() throws -> Never {
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print("passThrowFunctionWithNeverReturn")
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throw NaiveErrors.returnError
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}
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// CHECK: SWIFT_INLINE_THUNK swift::ThrowingResult<void> throwFunctionWithNeverReturn() SWIFT_SYMBOL("s:9Functions28throwFunctionWithNeverReturns0E0OyKF") SWIFT_NORETURN_EXCEPT_ERRORS {
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// CHECK-NEXT: void* opaqueError = nullptr;
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// CHECK-NEXT: void* _ctx = nullptr;
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// CHECK-NEXT: _impl::$s9Functions28throwFunctionWithNeverReturns0E0OyKF(_ctx, &opaqueError);
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// CHECK-NEXT: if (opaqueError != nullptr)
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// CHECK-NEXT: #ifdef __cpp_exceptions
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// CHECK-NEXT: throw (swift::Error(opaqueError));
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// CHECK-NEXT: #else
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// CHECK-NEXT: return swift::Expected<void>(swift::Error(opaqueError));
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// CHECK-NEXT: #endif
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// CHECK-NEXT: abort();
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// CHECK-NEXT: }
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@_expose(Cxx)
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public func throwFunctionWithPossibleReturn(_ a: Int) throws -> Int {
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print("passThrowFunctionWithPossibleReturn")
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if (a == 0) {
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throw NaiveErrors.returnError
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}
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return 0
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}
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// CHECK: SWIFT_INLINE_THUNK swift::ThrowingResult<swift::Int> throwFunctionWithPossibleReturn(swift::Int a) SWIFT_SYMBOL("s:9Functions31throwFunctionWithPossibleReturnyS2iKF") SWIFT_WARN_UNUSED_RESULT {
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// CHECK: void* opaqueError = nullptr;
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// CHECK: void* _ctx = nullptr;
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// CHECK: auto returnValue = Functions::_impl::$s9Functions31throwFunctionWithPossibleReturnyS2iKF(a, _ctx, &opaqueError);
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// CHECK: if (opaqueError != nullptr)
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// CHECK: #ifdef __cpp_exceptions
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// CHECK: throw (swift::Error(opaqueError));
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// CHECK: #else
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// CHECK: return swift::Expected<swift::Int>(swift::Error(opaqueError));
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// CHECK: #endif
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// CHECK: return SWIFT_RETURN_THUNK(swift::Int, returnValue);
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// CHECK: }
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@_expose(Cxx)
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public func throwFunctionWithReturn() throws -> Int {
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print("passThrowFunctionWithReturn")
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throw NaiveErrors.returnError
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return 0
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}
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// CHECK: SWIFT_INLINE_THUNK swift::ThrowingResult<swift::Int> throwFunctionWithReturn() SWIFT_SYMBOL("s:9Functions23throwFunctionWithReturnSiyKF") SWIFT_WARN_UNUSED_RESULT {
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// CHECK: void* opaqueError = nullptr;
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// CHECK: void* _ctx = nullptr;
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// CHECK: auto returnValue = Functions::_impl::$s9Functions23throwFunctionWithReturnSiyKF(_ctx, &opaqueError);
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// CHECK: #ifdef __cpp_exceptions
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// CHECK: throw (swift::Error(opaqueError));
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// CHECK: #else
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// CHECK: return swift::Expected<swift::Int>(swift::Error(opaqueError));
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// CHECK: #endif
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// CHECK: return SWIFT_RETURN_THUNK(swift::Int, returnValue);
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// CHECK: }
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