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// RUN: %target-typecheck-verify-swift -swift-version 5 -enable-library-evolution -enable-nonfrozen-enum-exhaustivity-diagnostics -debugger-support
// RUN: %target-typecheck-verify-swift -swift-version 5 -enable-library-evolution -enable-nonfrozen-enum-exhaustivity-diagnostics -playground
public enum NonExhaustive {
case a, b
}
public enum NonExhaustivePayload {
case a(Int), b(Bool)
}
// Inlineable code is considered "outside" the module and must include a default
// case.
@inlinable
public func testNonExhaustive(_ value: NonExhaustive, _ payload: NonExhaustivePayload, flag: Bool) {
switch value { // expected-error {{switch must be exhaustive}} {{none}} expected-note {{add missing case: '.b'}} {{none}} expected-note {{handle unknown values using "@unknown default"}} {{none}}
case .a: break
}
switch value { // no-warning
case .a: break
case .b: break
}
switch value {
case .a: break
case .b: break
default: break // no-warning
}
switch value {
case .a: break
case .b: break
@unknown case _: break // no-warning
}
switch value { // expected-warning {{switch must be exhaustive}} {{none}} expected-note {{add missing case: '.b'}} {{none}}
case .a: break
@unknown case _: break
}
switch value { // expected-warning {{switch must be exhaustive}} {{none}} expected-note {{add missing case: '.a'}} {{none}} expected-note {{add missing case: '.b'}} {{none}}
@unknown case _: break
}
switch value {
case _: break
@unknown case _: break
}
// Test being part of other spaces.
switch value as Optional { // no-warning
case .a?: break
case .b?: break
case nil: break
}
switch value as Optional {
case _?: break
case nil: break
} // no-warning
switch (value, flag) { // no-warning
case (.a, _): break
case (.b, false): break
case (_, true): break
}
switch (flag, value) { // no-warning
case (_, .a): break
case (false, .b): break
case (true, _): break
}
// Test payloaded enums.
switch payload { // expected-error {{switch must be exhaustive}} {{none}} expected-note {{add missing case: '.b(_)'}} {{none}} expected-note {{handle unknown values using "@unknown default"}} {{none}}
case .a: break
}
switch payload { // no-warning
case .a: break
case .b: break
}
switch payload {
case .a: break
case .b: break
default: break // no-warning
}
switch payload {
case .a: break
case .b: break
@unknown case _: break // no-warning
}
switch payload { // expected-warning {{switch must be exhaustive}} {{none}} expected-note {{add missing case: '.b(_)'}} {{none}}
case .a: break
@unknown case _: break
}
switch payload { // expected-error {{switch must be exhaustive}} {{none}} expected-note {{add missing case: '.b(true)'}} {{none}} expected-note {{handle unknown values using "@unknown default"}} {{none}}
case .a: break
case .b(false): break
}
switch payload { // expected-warning {{switch must be exhaustive}} {{none}} expected-note {{add missing case: '.b(true)'}} {{none}}
case .a: break
case .b(false): break
@unknown case _: break
}
}
public func testNonExhaustiveWithinModule(_ value: NonExhaustive, _ payload: NonExhaustivePayload, flag: Bool) {
switch value { // expected-error {{switch must be exhaustive}} {{none}} expected-note {{add missing case: '.b'}}
case .a: break
}
switch value { // no-warning
case .a: break
case .b: break
}
switch value {
case .a: break
case .b: break
default: break // no-warning
}
switch value {
case .a: break
case .b: break
@unknown case _: break // no-warning
}
switch value { // expected-warning {{switch must be exhaustive}} {{none}} expected-note {{add missing case: '.b'}} {{none}}
case .a: break
@unknown case _: break
}
switch value { // expected-warning {{switch must be exhaustive}} {{none}} expected-note {{add missing case: '.a'}} {{none}} expected-note {{add missing case: '.b'}} {{none}}
@unknown case _: break
}
switch value {
case _: break
@unknown case _: break
}
// Test being part of other spaces.
switch value as Optional { // no-warning
case .a?: break
case .b?: break
case nil: break
}
switch value as Optional {
case _?: break
case nil: break
} // no-warning
switch (value, flag) { // no-warning
case (.a, _): break
case (.b, false): break
case (_, true): break
}
switch (flag, value) { // no-warning
case (_, .a): break
case (false, .b): break
case (true, _): break
}
// Test payloaded enums.
switch payload { // expected-error {{switch must be exhaustive}} {{none}} expected-note {{add missing case: '.b(_)'}} {{none}}
case .a: break
}
switch payload { // no-warning
case .a: break
case .b: break
}
switch payload {
case .a: break
case .b: break
default: break // no-warning
}
switch payload {
case .a: break
case .b: break
@unknown case _: break // no-warning
}
switch payload { // expected-warning {{switch must be exhaustive}} {{none}} expected-note {{add missing case: '.b(_)'}} {{none}}
case .a: break
@unknown case _: break
}
switch payload { // expected-error {{switch must be exhaustive}} {{none}} expected-note {{add missing case: '.b(true)'}} {{none}}
case .a: break
case .b(false): break
}
switch payload { // expected-warning {{switch must be exhaustive}} {{none}} expected-note {{add missing case: '.b(true)'}} {{none}}
case .a: break
case .b(false): break
@unknown case _: break
}
}
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