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177 lines
7.5 KiB
Swift
177 lines
7.5 KiB
Swift
// RUN: rm -rf %t && mkdir -p %t
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// RUN: %build-clang-importer-objc-overlays
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// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk-nosource -I %t) -emit-silgen %s | %FileCheck %s
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// REQUIRES: objc_interop
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import Foundation
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// CHECK-LABEL: sil hidden @_T010objc_error20NSErrorError_erasures0D0_pSo0C0CF : $@convention(thin) (@owned NSError) -> @owned Error {
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// CHECK: bb0([[ERROR:%.*]] : $NSError):
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// CHECK: [[BORROWED_ERROR:%.*]] = begin_borrow [[ERROR]]
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// CHECK: [[ERROR_COPY:%.*]] = copy_value [[BORROWED_ERROR]]
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// CHECK: [[ERROR_TYPE:%.*]] = init_existential_ref [[ERROR_COPY]] : $NSError : $NSError, $Error
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// CHECK: end_borrow [[BORROWED_ERROR]] from [[ERROR]]
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// CHECK: destroy_value [[ERROR]]
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// CHECK: return [[ERROR_TYPE]]
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// CHECK: } // end sil function '_T010objc_error20NSErrorError_erasures0D0_pSo0C0CF'
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func NSErrorError_erasure(_ x: NSError) -> Error {
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return x
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}
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// CHECK-LABEL: sil hidden @_T010objc_error30NSErrorError_archetype_erasures0D0_pxSo0C0CRbzlF : $@convention(thin) <T where T : NSError> (@owned T) -> @owned Error {
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// CHECK: bb0([[ERROR:%.*]] : $T):
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// CHECK: [[BORROWED_ERROR:%.*]] = begin_borrow [[ERROR]]
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// CHECK: [[ERROR_COPY:%.*]] = copy_value [[BORROWED_ERROR]]
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// CHECK: [[T0:%.*]] = upcast [[ERROR_COPY]] : $T to $NSError
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// CHECK: [[ERROR_TYPE:%.*]] = init_existential_ref [[T0]] : $NSError : $NSError, $Error
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// CHECK: end_borrow [[BORROWED_ERROR]] from [[ERROR]]
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// CHECK: destroy_value [[ERROR]]
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// CHECK: return [[ERROR_TYPE]]
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// CHECK: } // end sil function '_T010objc_error30NSErrorError_archetype_erasures0D0_pxSo0C0CRbzlF'
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func NSErrorError_archetype_erasure<T : NSError>(_ t: T) -> Error {
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return t
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}
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// Test patterns that are non-trivial, but irrefutable. SILGen shouldn't crash
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// on these.
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func test_doesnt_throw() {
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do {
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throw NSError(domain: "", code: 1, userInfo: [:])
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} catch is Error { // expected-warning {{'is' test is always true}}
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}
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do {
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throw NSError(domain: "", code: 1, userInfo: [:])
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} catch let e as NSError { // ok.
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_ = e
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}
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}
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class ErrorClass: Error {
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let _domain = ""
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let _code = 0
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}
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// Class-to-NSError casts must be done as indirect casts since they require
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// a representation change, and checked_cast_br currently doesn't allow that.
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// CHECK-LABEL: sil hidden @_T010objc_error20test_cast_to_nserroryyF
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func test_cast_to_nserror() {
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let e = ErrorClass()
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// CHECK: function_ref @swift_bridgeErrorToNSError
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let nsCoerced = e as Error as NSError
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// CHECK: unconditional_checked_cast_addr {{.*}} AnyObject in {{%.*}} : $*AnyObject to NSError in {{%.*}} : $*NSError
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let nsForcedCast = (e as AnyObject) as! NSError
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// CHECK: checked_cast_addr_br {{.*}} Error in {{%.*}} : $*Error to NSError in {{%.*}} : $*NSError, bb3, bb4
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do {
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throw e
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} catch _ as NSError {
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}
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}
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// A class-constrained archetype may be NSError, so we can't use scalar casts
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// in that case either.
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// CHECK-LABEL: sil hidden @_T010objc_error28test_cast_to_class_archetype{{[_0-9a-zA-Z]*}}F
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func test_cast_to_class_archetype<T: AnyObject>(_: T) {
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// CHECK: unconditional_checked_cast_addr {{.*}} ErrorClass in {{%.*}} : $*ErrorClass to T in {{.*}} : $*T
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let e = ErrorClass()
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let forcedCast = e as! T
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}
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// CHECK-LABEL: sil hidden @_T010objc_error15testAcceptError{{[_0-9a-zA-Z]*}}F
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func testAcceptError(error: Error) {
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// CHECK-NOT: return
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// CHECK: function_ref @swift_convertErrorToNSError
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acceptError(error)
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}
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// CHECK-LABEL: sil hidden @_T010objc_error16testProduceError{{[_0-9a-zA-Z]*}}F
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func testProduceError() -> Error {
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// CHECK: function_ref @produceError : $@convention(c) () -> @autoreleased NSError
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// CHECK: init_existential_ref {{.*}} : $NSError : $NSError, $Error
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return produceError()
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}
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// CHECK-LABEL: sil hidden @_T010objc_error24testProduceOptionalError{{[_0-9a-zA-Z]*}}F
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func testProduceOptionalError() -> Error? {
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// CHECK: function_ref @produceOptionalError
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// CHECK: init_existential_ref {{.*}} : $NSError : $NSError, $Error
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return produceOptionalError();
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}
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class MyNSError : NSError {
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override init() {
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super.init(domain: "MyNSError", code: 0, userInfo: [:])
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}
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}
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// CHECK-LABEL: sil hidden @_T010objc_error14eraseMyNSError{{[_0-9a-zA-Z]*}}F : $@convention(thin) () -> @owned Error {
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// CHECK: bb0:
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// CHECK: [[NSERROR_SUBCLASS:%.*]] = apply {{.*}}({{.*}}) : $@convention(method) (@thick MyNSError.Type) -> @owned MyNSError
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// CHECK: [[UPCAST:%.*]] = upcast [[NSERROR_SUBCLASS]] : $MyNSError to $NSError
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// CHECK: [[EXISTENTIAL_REF:%.*]] = init_existential_ref [[UPCAST]]
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// CHECK: [[BORROWED_EXISTENTIAL_REF:%.*]] = begin_borrow [[EXISTENTIAL_REF]]
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// CHECK: [[COPY_BORROWED_EXISTENTIAL_REF:%.*]] = copy_value [[BORROWED_EXISTENTIAL_REF]]
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// CHECK: end_borrow [[BORROWED_EXISTENTIAL_REF]] from [[EXISTENTIAL_REF]]
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// CHECK: destroy_value [[EXISTENTIAL_REF]]
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// CHECK: return [[COPY_BORROWED_EXISTENTIAL_REF]]
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// CHECK: } // end sil function '_T010objc_error14eraseMyNSError{{[_0-9a-zA-Z]*}}F'
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func eraseMyNSError() -> Error {
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let x: Error = MyNSError()
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return x
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}
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// CHECK-LABEL: sil hidden @_T010objc_error25eraseFictionalServerErrors0F0_pyF
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func eraseFictionalServerError() -> Error {
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// CHECK-NOT: return
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// CHECK: [[NSERROR:%[0-9]+]] = struct_extract {{.*}} : $FictionalServerError, #FictionalServerError._nsError
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// CHECK: [[NSERROR_COPY:%.*]] = copy_value [[NSERROR]]
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// CHECK: [[ERROR:%[0-9]+]] = init_existential_ref [[NSERROR_COPY]]
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// CHECK: return [[ERROR]]
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return FictionalServerError(.meltedDown)
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}
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// CHECK: } // end sil function '_T010objc_error25eraseFictionalServerErrors0F0_pyF'
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// SR-1562
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extension Error {
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// CHECK-LABEL: sil hidden @_T0s5ErrorP10objc_errorE16convertToNSErrorSo0F0CyF
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// CHECK: bb0([[SELF:%[0-9]+]] : $*Self)
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func convertToNSError() -> NSError {
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// CHECK: [[COPY:%.*]] = alloc_stack $Self
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// CHECK: copy_addr [[SELF]] to [initialization] [[COPY]]
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// CHECK: [[COPY2:%.*]] = alloc_stack $Self
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// CHECK: copy_addr [[COPY]] to [initialization] [[COPY2]]
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// CHECK: [[GET_EMBEDDED_FN:%[0-9]+]] = function_ref @swift_stdlib_getErrorEmbeddedNSError
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// CHECK: [[EMBEDDED_RESULT_OPT:%[0-9]+]] = apply [[GET_EMBEDDED_FN]]<Self>([[COPY2]])
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// CHECK: switch_enum [[EMBEDDED_RESULT_OPT]] : $Optional<AnyObject>,
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// CHECK-SAME: case #Optional.some!enumelt.1: [[SUCCESS:bb[0-9]+]],
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// CHECK-SAME: case #Optional.none!enumelt: [[FAILURE:bb[0-9]+]]
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// CHECK: [[SUCCESS]]([[EMBEDDED_RESULT:%.*]] : $AnyObject):
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// CHECK: [[EMBEDDED_NSERROR:%[0-9]+]] = unchecked_ref_cast [[EMBEDDED_RESULT]] : $AnyObject to $NSError
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// CHECK: [[ERROR:%[0-9]+]] = init_existential_ref [[EMBEDDED_NSERROR]] : $NSError : $NSError, $Error
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// CHECK: destroy_addr [[COPY]] : $*Self
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// CHECK: br [[CONTINUATION:bb[0-9]+]]([[ERROR]] : $Error)
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// CHECK: [[FAILURE]]:
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// CHECK: [[ERROR_BOX:%[0-9]+]] = alloc_existential_box $Error, $Self
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// CHECK: [[ERROR_PROJECTED:%[0-9]+]] = project_existential_box $Self in [[ERROR_BOX]] : $Error
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// CHECK: copy_addr [take] [[COPY]] to [initialization] [[ERROR_PROJECTED]] : $*Self
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// CHECK: br [[CONTINUATION]]([[ERROR_BOX]] : $Error)
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// CHECK: [[CONTINUATION]]([[ERROR_ARG:%[0-9]+]] : $Error):
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return self as NSError
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}
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}
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class Gizmoid : NSObject {
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// CHECK-LABEL: sil hidden [thunk] @_T010objc_error7GizmoidCACyt3foo_tKcfcTo : $@convention(objc_method) (Optional<AutoreleasingUnsafeMutablePointer<Optional<NSError>>>, @owned Gizmoid) -> @owned Optional<Gizmoid>
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@objc init(foo: ()) throws {}
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}
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